tclExecute.c Go to the documentation of this file. /* * tclExecute.c -- * * This file contains procedures that execute byte-compiled Tcl commands. * * Copyright (c) 1996-1997 Sun Microsystems, Inc. * Copyright (c) 1998-2000 by Scriptics Corporation. * Copyright (c) 2001 by Kevin B. Kenny. All rights reserved. * Copyright (c) 2002-2005 by Miguel Sofer. * Copyright (c) 2005-2007 by Donal K. Fellows. * Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net> * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * * RCS: @(#) $Id: tclExecute.c,v 1.363 2008/02/04 20:24:55 msofer Exp $ */ #include "tclInt.h" #include "tclCompile.h" #include "tommath.h" #include <math.h> #include <float.h> /* * Hack to determine whether we may expect IEEE floating point. The hack is * formally incorrect in that non-IEEE platforms might have the same precision * and range, but VAX, IBM, and Cray do not; are there any other floating * point units that we might care about? */ #if (FLT_RADIX == 2) && (DBL_MANT_DIG == 53) && (DBL_MAX_EXP == 1024) #define IEEE_FLOATING_POINT #endif /* * A mask (should be 2**n-1) that is used to work out when the bytecode engine * should call Tcl_AsyncReady() to see whether there is a signal that needs * handling. */ #ifndef ASYNC_CHECK_COUNT_MASK # define ASYNC_CHECK_COUNT_MASK 63 #endif /* !ASYNC_CHECK_COUNT_MASK */ /* * Boolean flag indicating whether the Tcl bytecode interpreter has been * initialized. */ static int execInitialized = 0; TCL_DECLARE_MUTEX(execMutex) #ifdef TCL_COMPILE_DEBUG /* * Variable that controls whether execution tracing is enabled and, if so, * what level of tracing is desired: * 0: no execution tracing * 1: trace invocations of Tcl procs only * 2: trace invocations of all (not compiled away) commands * 3: display each instruction executed * This variable is linked to the Tcl variable "tcl_traceExec". */ int tclTraceExec = 0; #endif /* * Mapping from expression instruction opcodes to strings; used for error * messages. Note that these entries must match the order and number of the * expression opcodes (e.g., INST_LOR) in tclCompile.h. * * Does not include the string for INST_EXPON (and beyond), as that is * disjoint for backward-compatability reasons. */ static const char *operatorStrings[] = { "||", "&&", "|", "^", "&", "==", "!=", "<", ">", "<=", ">=", "<<", ">>", "+", "-", "*", "/", "%", "+", "-", "~", "!", "BUILTIN FUNCTION", "FUNCTION", "", "", "", "", "", "", "", "", "eq", "ne" }; /* * Mapping from Tcl result codes to strings; used for error and debugging * messages. */ #ifdef TCL_COMPILE_DEBUG static const char *resultStrings[] = { "TCL_OK", "TCL_ERROR", "TCL_RETURN", "TCL_BREAK", "TCL_CONTINUE" }; #endif /* * These are used by evalstats to monitor object usage in Tcl. */ #ifdef TCL_COMPILE_STATS long tclObjsAlloced = 0; long tclObjsFreed = 0; long tclObjsShared[TCL_MAX_SHARED_OBJ_STATS] = { 0, 0, 0, 0, 0 }; #endif /* TCL_COMPILE_STATS */ /* * Support pre-8.5 bytecodes unless specifically requested otherwise. */ #ifndef TCL_SUPPORT_84_BYTECODE #define TCL_SUPPORT_84_BYTECODE 1 #endif #if TCL_SUPPORT_84_BYTECODE /* * We need to know the tclBuiltinFuncTable to support translation of pre-8.5 * math functions to the namespace-based ::tcl::mathfunc::op in 8.5+. */ typedef struct { char *name; /* Name of function. */ int numArgs; /* Number of arguments for function. */ } BuiltinFunc; /* * Table describing the built-in math functions. Entries in this table are * indexed by the values of the INST_CALL_BUILTIN_FUNC instruction's * operand byte. */ static BuiltinFunc tclBuiltinFuncTable[] = { {"acos", 1}, {"asin", 1}, {"atan", 1}, {"atan2", 2}, {"ceil", 1}, {"cos", 1}, {"cosh", 1}, {"exp", 1}, {"floor", 1}, {"fmod", 2}, {"hypot", 2}, {"log", 1}, {"log10", 1}, {"pow", 2}, {"sin", 1}, {"sinh", 1}, {"sqrt", 1}, {"tan", 1}, {"tanh", 1}, {"abs", 1}, {"double", 1}, {"int", 1}, {"rand", 0}, {"round", 1}, {"srand", 1}, {"wide", 1}, {0}, }; #define LAST_BUILTIN_FUNC 25 #endif /* * These variable-access macros have to coincide with those in tclVar.c */ #define VarHashGetValue(hPtr) \ ((Var *) ((char *)hPtr - TclOffset(VarInHash, entry))) static inline Var * VarHashCreateVar( TclVarHashTable *tablePtr, Tcl_Obj *key, int *newPtr) { Tcl_HashEntry *hPtr = Tcl_CreateHashEntry((Tcl_HashTable *) tablePtr, (char *) key, newPtr); if (!hPtr) { return NULL; } return VarHashGetValue(hPtr); } #define VarHashFindVar(tablePtr, key) \ VarHashCreateVar((tablePtr), (key), NULL) /* * The new macro for ending an instruction; note that a reasonable C-optimiser * will resolve all branches at compile time. (result) is always a constant; * the macro NEXT_INST_F handles constant (nCleanup), NEXT_INST_V is resolved * at runtime for variable (nCleanup). * * ARGUMENTS: * pcAdjustment: how much to increment pc * nCleanup: how many objects to remove from the stack * resultHandling: 0 indicates no object should be pushed on the stack; * otherwise, push objResultPtr. If (result < 0), objResultPtr already * has the correct reference count. */ #define NEXT_INST_F(pcAdjustment, nCleanup, resultHandling) \ if (nCleanup == 0) {\ if (resultHandling != 0) {\ if ((resultHandling) > 0) {\ PUSH_OBJECT(objResultPtr);\ } else {\ *(++tosPtr) = objResultPtr;\ }\ } \ pc += (pcAdjustment);\ goto cleanup0;\ } else if (resultHandling != 0) {\ if ((resultHandling) > 0) {\ Tcl_IncrRefCount(objResultPtr);\ }\ pc += (pcAdjustment);\ switch (nCleanup) {\ case 1: goto cleanup1_pushObjResultPtr;\ case 2: goto cleanup2_pushObjResultPtr;\ default: Tcl_Panic("bad usage of macro NEXT_INST_F");\ }\ } else {\ pc += (pcAdjustment);\ switch (nCleanup) {\ case 1: goto cleanup1;\ case 2: goto cleanup2;\ default: Tcl_Panic("bad usage of macro NEXT_INST_F");\ }\ } #define NEXT_INST_V(pcAdjustment, nCleanup, resultHandling) \ pc += (pcAdjustment);\ cleanup = (nCleanup);\ if (resultHandling) {\ if ((resultHandling) > 0) {\ Tcl_IncrRefCount(objResultPtr);\ }\ goto cleanupV_pushObjResultPtr;\ } else {\ goto cleanupV;\ } /* * Macros used to cache often-referenced Tcl evaluation stack information * in local variables. Note that a DECACHE_STACK_INFO()-CACHE_STACK_INFO() * pair must surround any call inside TclExecuteByteCode (and a few other * procedures that use this scheme) that could result in a recursive call * to TclExecuteByteCode. */ #define CACHE_STACK_INFO() \ checkInterp = 1 #define DECACHE_STACK_INFO() \ esPtr->tosPtr = tosPtr /* * Macros used to access items on the Tcl evaluation stack. PUSH_OBJECT * increments the object's ref count since it makes the stack have another * reference pointing to the object. However, POP_OBJECT does not decrement * the ref count. This is because the stack may hold the only reference to the * object, so the object would be destroyed if its ref count were decremented * before the caller had a chance to, e.g., store it in a variable. It is the * caller's responsibility to decrement the ref count when it is finished with * an object. * * WARNING! It is essential that objPtr only appear once in the PUSH_OBJECT * macro. The actual parameter might be an expression with side effects, and * this ensures that it will be executed only once. */ #define PUSH_OBJECT(objPtr) \ Tcl_IncrRefCount(*(++tosPtr) = (objPtr)) #define POP_OBJECT() *(tosPtr--) #define OBJ_AT_TOS *tosPtr #define OBJ_UNDER_TOS *(tosPtr-1) #define OBJ_AT_DEPTH(n) *(tosPtr-(n)) #define CURR_DEPTH (tosPtr - initTosPtr) /* * Macros used to trace instruction execution. The macros TRACE, * TRACE_WITH_OBJ, and O2S are only used inside TclExecuteByteCode. O2S is * only used in TRACE* calls to get a string from an object. */ #ifdef TCL_COMPILE_DEBUG # define TRACE(a) \ if (traceInstructions) { \ fprintf(stdout, "%2d: %2d (%u) %s ", iPtr->numLevels, \ (int) CURR_DEPTH, \ (unsigned)(pc - codePtr->codeStart), \ GetOpcodeName(pc)); \ printf a; \ } # define TRACE_APPEND(a) \ if (traceInstructions) { \ printf a; \ } # define TRACE_WITH_OBJ(a, objPtr) \ if (traceInstructions) { \ fprintf(stdout, "%2d: %2d (%u) %s ", iPtr->numLevels, \ (int) CURR_DEPTH, \ (unsigned)(pc - codePtr->codeStart), \ GetOpcodeName(pc)); \ printf a; \ TclPrintObject(stdout, objPtr, 30); \ fprintf(stdout, "\n"); \ } # define O2S(objPtr) \ (objPtr ? TclGetString(objPtr) : "") #else /* !TCL_COMPILE_DEBUG */ # define TRACE(a) # define TRACE_APPEND(a) # define TRACE_WITH_OBJ(a, objPtr) # define O2S(objPtr) #endif /* TCL_COMPILE_DEBUG */ /* * DTrace instruction probe macros. */ #define TCL_DTRACE_INST_NEXT() \ if (TCL_DTRACE_INST_DONE_ENABLED()) {\ if (curInstName) {\ TCL_DTRACE_INST_DONE(curInstName, (int) CURR_DEPTH, tosPtr);\ }\ curInstName = tclInstructionTable[*pc].name;\ if (TCL_DTRACE_INST_START_ENABLED()) {\ TCL_DTRACE_INST_START(curInstName, (int) CURR_DEPTH, tosPtr);\ }\ } else if (TCL_DTRACE_INST_START_ENABLED()) {\ TCL_DTRACE_INST_START(tclInstructionTable[*pc].name, (int) CURR_DEPTH,\ tosPtr);\ } #define TCL_DTRACE_INST_LAST() \ if (TCL_DTRACE_INST_DONE_ENABLED() && curInstName) {\ TCL_DTRACE_INST_DONE(curInstName, (int) CURR_DEPTH, tosPtr);\ } /* * Macro used in this file to save a function call for common uses of * TclGetNumberFromObj(). The ANSI C "prototype" is: * * MODULE_SCOPE int GetNumberFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr, * ClientData *ptrPtr, int *tPtr); */ #ifdef NO_WIDE_TYPE #define GetNumberFromObj(interp, objPtr, ptrPtr, tPtr) \ (((objPtr)->typePtr == &tclIntType) \ ? (*(tPtr) = TCL_NUMBER_LONG, \ *(ptrPtr) = (ClientData) \ (&((objPtr)->internalRep.longValue)), TCL_OK) : \ ((objPtr)->typePtr == &tclDoubleType) \ ? (((TclIsNaN((objPtr)->internalRep.doubleValue)) \ ? (*(tPtr) = TCL_NUMBER_NAN) \ : (*(tPtr) = TCL_NUMBER_DOUBLE)), \ *(ptrPtr) = (ClientData) \ (&((objPtr)->internalRep.doubleValue)), TCL_OK) : \ ((((objPtr)->typePtr == NULL) && ((objPtr)->bytes == NULL)) || \ (((objPtr)->bytes != NULL) && ((objPtr)->length == 0))) \ ? TCL_ERROR : \ TclGetNumberFromObj((interp), (objPtr), (ptrPtr), (tPtr))) #else #define GetNumberFromObj(interp, objPtr, ptrPtr, tPtr) \ (((objPtr)->typePtr == &tclIntType) \ ? (*(tPtr) = TCL_NUMBER_LONG, \ *(ptrPtr) = (ClientData) \ (&((objPtr)->internalRep.longValue)), TCL_OK) : \ ((objPtr)->typePtr == &tclWideIntType) \ ? (*(tPtr) = TCL_NUMBER_WIDE, \ *(ptrPtr) = (ClientData) \ (&((objPtr)->internalRep.wideValue)), TCL_OK) : \ ((objPtr)->typePtr == &tclDoubleType) \ ? (((TclIsNaN((objPtr)->internalRep.doubleValue)) \ ? (*(tPtr) = TCL_NUMBER_NAN) \ : (*(tPtr) = TCL_NUMBER_DOUBLE)), \ *(ptrPtr) = (ClientData) \ (&((objPtr)->internalRep.doubleValue)), TCL_OK) : \ ((((objPtr)->typePtr == NULL) && ((objPtr)->bytes == NULL)) || \ (((objPtr)->bytes != NULL) && ((objPtr)->length == 0))) \ ? TCL_ERROR : \ TclGetNumberFromObj((interp), (objPtr), (ptrPtr), (tPtr))) #endif /* * Macro used in this file to save a function call for common uses of * Tcl_GetBooleanFromObj(). The ANSI C "prototype" is: * * MODULE_SCOPE int TclGetBooleanFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr, * int *boolPtr); */ #define TclGetBooleanFromObj(interp, objPtr, boolPtr) \ ((((objPtr)->typePtr == &tclIntType) \ || ((objPtr)->typePtr == &tclBooleanType)) \ ? (*(boolPtr) = ((objPtr)->internalRep.longValue!=0), TCL_OK) \ : Tcl_GetBooleanFromObj((interp), (objPtr), (boolPtr))) /* * Macro used in this file to save a function call for common uses of * Tcl_GetWideIntFromObj(). The ANSI C "prototype" is: * * MODULE_SCOPE int TclGetWideIntFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr, * Tcl_WideInt *wideIntPtr); */ #ifdef NO_WIDE_TYPE #define TclGetWideIntFromObj(interp, objPtr, wideIntPtr) \ (((objPtr)->typePtr == &tclIntType) \ ? (*(wideIntPtr) = (Tcl_WideInt) \ ((objPtr)->internalRep.longValue), TCL_OK) : \ Tcl_GetWideIntFromObj((interp), (objPtr), (wideIntPtr))) #else #define TclGetWideIntFromObj(interp, objPtr, wideIntPtr) \ (((objPtr)->typePtr == &tclWideIntType) \ ? (*(wideIntPtr) = (objPtr)->internalRep.wideValue, TCL_OK) : \ ((objPtr)->typePtr == &tclIntType) \ ? (*(wideIntPtr) = (Tcl_WideInt) \ ((objPtr)->internalRep.longValue), TCL_OK) : \ Tcl_GetWideIntFromObj((interp), (objPtr), (wideIntPtr))) #endif /* * Macro used to make the check for type overflow more mnemonic. This works by * comparing sign bits; the rest of the word is irrelevant. The ANSI C * "prototype" (where inttype_t is any integer type) is: * * MODULE_SCOPE int Overflowing(inttype_t a, inttype_t b, inttype_t sum); * * Check first the condition most likely to fail in usual code (at least for * usage in [incr]: do the first summand and the sum have != signs? */ #define Overflowing(a,b,sum) ((((a)^(sum)) < 0) && (((a)^(b)) >= 0)) /* * Custom object type only used in this file; values of its type should never * be seen by user scripts. */ static Tcl_ObjType dictIteratorType = { "dictIterator", NULL, NULL, NULL, NULL }; /* * Auxiliary tables used to compute powers of small integers */ #if (LONG_MAX == 0x7fffffff) /* * Maximum base that, when raised to powers 2, 3, ... 8, fits in a 32-bit * signed integer */ static const long MaxBase32[7] = {46340, 1290, 215, 73, 35, 21, 14}; /* * Table giving 3, 4, ..., 11, raised to the powers 9, 10, ..., as far as they * fit in a 32-bit signed integer. Exp32Index[i] gives the starting index of * powers of i+3; Exp32Value[i] gives the corresponding powers. */ static const unsigned short Exp32Index[] = { 0, 11, 18, 23, 26, 29, 31, 32, 33 }; static const long Exp32Value[] = { 19683, 59049, 177147, 531441, 1594323, 4782969, 14348907, 43046721, 129140163, 387420489, 1162261467, 262144, 1048576, 4194304, 16777216, 67108864, 268435456, 1073741824, 1953125, 9765625, 48828125, 244140625, 1220703125, 10077696, 60466176, 362797056, 40353607, 282475249, 1977326743, 134217728, 1073741824, 387420489, 1000000000 }; #endif /* LONG_MAX == 0x7fffffff -- 32 bit machine */ #if (LONG_MAX > 0x7fffffff) || !defined(TCL_WIDE_INT_IS_LONG) /* * Maximum base that, when raised to powers 2, 3, ..., 16, fits in a * Tcl_WideInt. */ static Tcl_WideInt MaxBaseWide[15]; /* *Table giving 3, 4, ..., 13 raised to powers greater than 16 when the * results fit in a 64-bit signed integer. */ static const unsigned short Exp64Index[] = { 0, 23, 38, 49, 57, 63, 67, 70, 72, 74, 75, 76 }; static const Tcl_WideInt Exp64Value[] = { (Tcl_WideInt)243*243*243*3*3, (Tcl_WideInt)243*243*243*3*3*3, (Tcl_WideInt)243*243*243*3*3*3*3, (Tcl_WideInt)243*243*243*243, (Tcl_WideInt)243*243*243*243*3, (Tcl_WideInt)243*243*243*243*3*3, (Tcl_WideInt)243*243*243*243*3*3*3, (Tcl_WideInt)243*243*243*243*3*3*3*3, (Tcl_WideInt)243*243*243*243*243, (Tcl_WideInt)243*243*243*243*243*3, (Tcl_WideInt)243*243*243*243*243*3*3, (Tcl_WideInt)243*243*243*243*243*3*3*3, (Tcl_WideInt)243*243*243*243*243*3*3*3*3, (Tcl_WideInt)243*243*243*243*243*243, (Tcl_WideInt)243*243*243*243*243*243*3, (Tcl_WideInt)243*243*243*243*243*243*3*3, (Tcl_WideInt)243*243*243*243*243*243*3*3*3, (Tcl_WideInt)243*243*243*243*243*243*3*3*3*3, (Tcl_WideInt)243*243*243*243*243*243*243, (Tcl_WideInt)243*243*243*243*243*243*243*3, (Tcl_WideInt)243*243*243*243*243*243*243*3*3, (Tcl_WideInt)243*243*243*243*243*243*243*3*3*3, (Tcl_WideInt)243*243*243*243*243*243*243*3*3*3*3, (Tcl_WideInt)1024*1024*1024*4*4, (Tcl_WideInt)1024*1024*1024*4*4*4, (Tcl_WideInt)1024*1024*1024*4*4*4*4, (Tcl_WideInt)1024*1024*1024*1024, (Tcl_WideInt)1024*1024*1024*1024*4, (Tcl_WideInt)1024*1024*1024*1024*4*4, (Tcl_WideInt)1024*1024*1024*1024*4*4*4, (Tcl_WideInt)1024*1024*1024*1024*4*4*4*4, (Tcl_WideInt)1024*1024*1024*1024*1024, (Tcl_WideInt)1024*1024*1024*1024*1024*4, (Tcl_WideInt)1024*1024*1024*1024*1024*4*4, (Tcl_WideInt)1024*1024*1024*1024*1024*4*4*4, (Tcl_WideInt)1024*1024*1024*1024*1024*4*4*4*4, (Tcl_WideInt)1024*1024*1024*1024*1024*1024, (Tcl_WideInt)1024*1024*1024*1024*1024*1024*4, (Tcl_WideInt)3125*3125*3125*5*5, (Tcl_WideInt)3125*3125*3125*5*5*5, (Tcl_WideInt)3125*3125*3125*5*5*5*5, (Tcl_WideInt)3125*3125*3125*3125, (Tcl_WideInt)3125*3125*3125*3125*5, (Tcl_WideInt)3125*3125*3125*3125*5*5, (Tcl_WideInt)3125*3125*3125*3125*5*5*5, (Tcl_WideInt)3125*3125*3125*3125*5*5*5*5, (Tcl_WideInt)3125*3125*3125*3125*3125, (Tcl_WideInt)3125*3125*3125*3125*3125*5, (Tcl_WideInt)3125*3125*3125*3125*3125*5*5, (Tcl_WideInt)7776*7776*7776*6*6, (Tcl_WideInt)7776*7776*7776*6*6*6, (Tcl_WideInt)7776*7776*7776*6*6*6*6, (Tcl_WideInt)7776*7776*7776*7776, (Tcl_WideInt)7776*7776*7776*7776*6, (Tcl_WideInt)7776*7776*7776*7776*6*6, (Tcl_WideInt)7776*7776*7776*7776*6*6*6, (Tcl_WideInt)7776*7776*7776*7776*6*6*6*6, (Tcl_WideInt)16807*16807*16807*7*7, (Tcl_WideInt)16807*16807*16807*7*7*7, (Tcl_WideInt)16807*16807*16807*7*7*7*7, (Tcl_WideInt)16807*16807*16807*16807, (Tcl_WideInt)16807*16807*16807*16807*7, (Tcl_WideInt)16807*16807*16807*16807*7*7, (Tcl_WideInt)32768*32768*32768*8*8, (Tcl_WideInt)32768*32768*32768*8*8*8, (Tcl_WideInt)32768*32768*32768*8*8*8*8, (Tcl_WideInt)32768*32768*32768*32768, (Tcl_WideInt)59049*59049*59049*9*9, (Tcl_WideInt)59049*59049*59049*9*9*9, (Tcl_WideInt)59049*59049*59049*9*9*9*9, (Tcl_WideInt)100000*100000*100000*10*10, (Tcl_WideInt)100000*100000*100000*10*10*10, (Tcl_WideInt)161051*161051*161051*11*11, (Tcl_WideInt)161051*161051*161051*11*11*11, (Tcl_WideInt)248832*248832*248832*12*12, (Tcl_WideInt)371293*371293*371293*13*13 }; #endif /* * Declarations for local procedures to this file: */ #ifdef TCL_COMPILE_STATS static int EvalStatsCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); #endif /* TCL_COMPILE_STATS */ #ifdef TCL_COMPILE_DEBUG static char * GetOpcodeName(unsigned char *pc); #endif /* TCL_COMPILE_DEBUG */ static ExceptionRange * GetExceptRangeForPc(unsigned char *pc, int catchOnly, ByteCode *codePtr); static const char * GetSrcInfoForPc(unsigned char *pc, ByteCode *codePtr, int *lengthPtr); static Tcl_Obj ** GrowEvaluationStack(ExecEnv *eePtr, int growth, int move); static void IllegalExprOperandType(Tcl_Interp *interp, unsigned char *pc, Tcl_Obj *opndPtr); static void InitByteCodeExecution(Tcl_Interp *interp); #ifdef TCL_COMPILE_DEBUG static void PrintByteCodeInfo(ByteCode *codePtr); static const char * StringForResultCode(int result); static void ValidatePcAndStackTop(ByteCode *codePtr, unsigned char *pc, int stackTop, int stackLowerBound, int checkStack); #endif /* TCL_COMPILE_DEBUG */ static void DeleteExecStack(ExecStack *esPtr); /* Useful elsewhere, make available in tclInt.h or stubs? */ static Tcl_Obj ** StackAllocWords(Tcl_Interp *interp, int numWords); static Tcl_Obj ** StackReallocWords(Tcl_Interp *interp, int numWords);  /* *---------------------------------------------------------------------- * * InitByteCodeExecution -- * * This procedure is called once to initialize the Tcl bytecode * interpreter. * * Results: * None. * * Side effects: * This procedure initializes the array of instruction names. If * compiling with the TCL_COMPILE_STATS flag, it initializes the array * that counts the executions of each instruction and it creates the * "evalstats" command. It also establishes the link between the Tcl * "tcl_traceExec" and C "tclTraceExec" variables. * *---------------------------------------------------------------------- */ static void InitByteCodeExecution( Tcl_Interp *interp) /* Interpreter for which the Tcl variable * "tcl_traceExec" is linked to control * instruction tracing. */ { #if (LONG_MAX > 0x7fffffff) || !defined(TCL_WIDE_INT_IS_LONG) int i, j; Tcl_WideInt w, x; #endif #ifdef TCL_COMPILE_DEBUG if (Tcl_LinkVar(interp, "tcl_traceExec", (char *) &tclTraceExec, TCL_LINK_INT) != TCL_OK) { Tcl_Panic("InitByteCodeExecution: can't create link for tcl_traceExec variable"); } #endif #ifdef TCL_COMPILE_STATS Tcl_CreateObjCommand(interp, "evalstats", EvalStatsCmd, NULL, NULL); #endif /* TCL_COMPILE_STATS */ #if (LONG_MAX > 0x7fffffff) || !defined(TCL_WIDE_INT_IS_LONG) /* * Fill in a table of what base can be raised to powers 2, 3, ... 16 * without overflowing a Tcl_WideInt */ for (i = 2; i <= 16; ++i) { /* * Compute an initial guess in floating point. */ w = (Tcl_WideInt) pow((double) LLONG_MAX, 1.0 / i) + 1; /* * Correct the guess if it's too high. */ for (;;) { x = LLONG_MAX; for (j = 0; j < i; ++j) { x /= w; } if (x == 1) { break; } --w; } MaxBaseWide[i-2] = w; } #endif }  /* *---------------------------------------------------------------------- * * TclCreateExecEnv -- * * This procedure creates a new execution environment for Tcl bytecode * execution. An ExecEnv points to a Tcl evaluation stack. An ExecEnv is * typically created once for each Tcl interpreter (Interp structure) and * recursively passed to TclExecuteByteCode to execute ByteCode sequences * for nested commands. * * Results: * A newly allocated ExecEnv is returned. This points to an empty * evaluation stack of the standard initial size. * * Side effects: * The bytecode interpreter is also initialized here, as this procedure * will be called before any call to TclExecuteByteCode. * *---------------------------------------------------------------------- */ #define TCL_STACK_INITIAL_SIZE 2000 ExecEnv * TclCreateExecEnv( Tcl_Interp *interp) /* Interpreter for which the execution * environment is being created. */ { ExecEnv *eePtr = (ExecEnv *) ckalloc(sizeof(ExecEnv)); ExecStack *esPtr = (ExecStack *) ckalloc(sizeof(ExecStack) + (size_t) (TCL_STACK_INITIAL_SIZE-1) * sizeof(Tcl_Obj *)); eePtr->execStackPtr = esPtr; TclNewBooleanObj(eePtr->constants[0], 0); Tcl_IncrRefCount(eePtr->constants[0]); TclNewBooleanObj(eePtr->constants[1], 1); Tcl_IncrRefCount(eePtr->constants[1]); esPtr->prevPtr = NULL; esPtr->nextPtr = NULL; esPtr->markerPtr = NULL; esPtr->endPtr = &esPtr->stackWords[TCL_STACK_INITIAL_SIZE-1]; esPtr->tosPtr = &esPtr->stackWords[-1]; Tcl_MutexLock(&execMutex); if (!execInitialized) { TclInitAuxDataTypeTable(); InitByteCodeExecution(interp); execInitialized = 1; } Tcl_MutexUnlock(&execMutex); return eePtr; } #undef TCL_STACK_INITIAL_SIZE  /* *---------------------------------------------------------------------- * * TclDeleteExecEnv -- * * Frees the storage for an ExecEnv. * * Results: * None. * * Side effects: * Storage for an ExecEnv and its contained storage (e.g. the evaluation * stack) is freed. * *---------------------------------------------------------------------- */ static void DeleteExecStack( ExecStack *esPtr) { if (esPtr->markerPtr) { Tcl_Panic("freeing an execStack which is still in use"); } if (esPtr->prevPtr) { esPtr->prevPtr->nextPtr = esPtr->nextPtr; } if (esPtr->nextPtr) { esPtr->nextPtr->prevPtr = esPtr->prevPtr; } ckfree((char *) esPtr); } void TclDeleteExecEnv( ExecEnv *eePtr) /* Execution environment to free. */ { ExecStack *esPtr = eePtr->execStackPtr, *tmpPtr; /* * Delete all stacks in this exec env. */ while (esPtr->nextPtr) { esPtr = esPtr->nextPtr; } while (esPtr) { tmpPtr = esPtr; esPtr = tmpPtr->prevPtr; DeleteExecStack(tmpPtr); } TclDecrRefCount(eePtr->constants[0]); TclDecrRefCount(eePtr->constants[1]); ckfree((char *) eePtr); }  /* *---------------------------------------------------------------------- * * TclFinalizeExecution -- * * Finalizes the execution environment setup so that it can be later * reinitialized. * * Results: * None. * * Side effects: * After this call, the next time TclCreateExecEnv will be called it will * call InitByteCodeExecution. * *---------------------------------------------------------------------- */ void TclFinalizeExecution(void) { Tcl_MutexLock(&execMutex); execInitialized = 0; Tcl_MutexUnlock(&execMutex); TclFinalizeAuxDataTypeTable(); }  /* * Auxiliary code to insure that GrowEvaluationStack always returns correctly * aligned memory. This assumes that TCL_ALLOCALIGN is a multiple of the * wordsize 'sizeof(Tcl_Obj *)'. */ #define WALLOCALIGN \ (TCL_ALLOCALIGN/sizeof(Tcl_Obj *)) static inline int OFFSET( Tcl_Obj **markerPtr) { /* * Note that we are only interested in the low bits of the address, so * that the fact that PTR2INT may lose the high bits is irrelevant. */ int mask, base, new; mask = WALLOCALIGN-1; base = (PTR2INT(markerPtr) & mask); new = ((base + 1) + mask) & ~mask; return (new - base); } #define MEMSTART(markerPtr) \ ((markerPtr) + OFFSET(markerPtr)) /* *---------------------------------------------------------------------- * * GrowEvaluationStack -- * * This procedure grows a Tcl evaluation stack stored in an ExecEnv, * copying over the words since the last mark if so requested. A mark is * set at the beginning of the new area when no copying is requested. * * Results: * Returns a pointer to the first usable word in the (possibly) grown * stack. * * Side effects: * The size of the evaluation stack may be grown, a marker is set * *---------------------------------------------------------------------- */ static Tcl_Obj ** GrowEvaluationStack( ExecEnv *eePtr, /* Points to the ExecEnv with an evaluation * stack to enlarge. */ int growth, /* How much larger than the current used * size. */ int move) /* 1 if move words since last marker. */ { ExecStack *esPtr = eePtr->execStackPtr, *oldPtr = NULL; int newBytes, newElems, currElems; int needed = growth - (esPtr->endPtr - esPtr->tosPtr); Tcl_Obj **markerPtr = esPtr->markerPtr, **memStart; if (move) { if (!markerPtr) { Tcl_Panic("STACK: Reallocating with no previous alloc"); } if (needed <= 0) { return MEMSTART(markerPtr); } } else { Tcl_Obj **tmpMarkerPtr = esPtr->tosPtr + 1; int offset = OFFSET(tmpMarkerPtr); if (needed + offset < 0) { /* * Put a marker pointing to the previous marker in this stack, and * store it in esPtr as the current marker. Return a pointer to * the start of aligned memory. */ esPtr->markerPtr = tmpMarkerPtr; memStart = tmpMarkerPtr + offset; esPtr->tosPtr = memStart - 1; *esPtr->markerPtr = (Tcl_Obj *) markerPtr; return memStart; } } /* * Reset move to hold the number of words to be moved to new stack (if * any) and growth to hold the complete stack requirements: add the marker * and maximal possible offset. */ if (move) { move = esPtr->tosPtr - MEMSTART(markerPtr) + 1; } needed = growth + move + WALLOCALIGN - 1; /* * Check if there is enough room in the next stack (if there is one, it * should be both empty and the last one!) */ if (esPtr->nextPtr) { oldPtr = esPtr; esPtr = oldPtr->nextPtr; currElems = esPtr->endPtr - &esPtr->stackWords[-1]; if (esPtr->markerPtr || (esPtr->tosPtr != &esPtr->stackWords[-1])) { Tcl_Panic("STACK: Stack after current is in use"); } if (esPtr->nextPtr) { Tcl_Panic("STACK: Stack after current is not last"); } if (needed <= currElems) { goto newStackReady; } DeleteExecStack(esPtr); esPtr = oldPtr; } else { currElems = esPtr->endPtr - &esPtr->stackWords[-1]; } /* * We need to allocate a new stack! It needs to store 'growth' words, * including the elements to be copied over and the new marker. */ newElems = 2*currElems; while (needed > newElems) { newElems *= 2; } newBytes = sizeof (ExecStack) + (newElems-1) * sizeof(Tcl_Obj *); oldPtr = esPtr; esPtr = (ExecStack *) ckalloc(newBytes); oldPtr->nextPtr = esPtr; esPtr->prevPtr = oldPtr; esPtr->nextPtr = NULL; esPtr->endPtr = &esPtr->stackWords[newElems-1]; newStackReady: eePtr->execStackPtr = esPtr; /* * Store a NULL marker at the beginning of the stack, to indicate that * this is the first marker in this stack and that rewinding to here * should actually be a return to the previous stack. */ esPtr->stackWords[0] = NULL; esPtr->markerPtr = &esPtr->stackWords[0]; memStart = MEMSTART(esPtr->markerPtr); esPtr->tosPtr = memStart - 1; if (move) { memcpy(memStart, MEMSTART(markerPtr), move*sizeof(Tcl_Obj *)); esPtr->tosPtr += move; oldPtr->markerPtr = (Tcl_Obj **) *markerPtr; oldPtr->tosPtr = markerPtr-1; } /* * Free the old stack if it is now unused. */ if (!oldPtr->markerPtr) { DeleteExecStack(oldPtr); } return memStart; }  /* *-------------------------------------------------------------- * * TclStackAlloc, TclStackRealloc, TclStackFree -- * * Allocate memory from the execution stack; it has to be returned later * with a call to TclStackFree. * * Results: * A pointer to the first byte allocated, or panics if the allocation did * not succeed. * * Side effects: * The execution stack may be grown. * *-------------------------------------------------------------- */ static Tcl_Obj ** StackAllocWords( Tcl_Interp *interp, int numWords) { /* * Note that GrowEvaluationStack sets a marker in the stack. This marker * is read when rewinding, e.g., by TclStackFree. */ Interp *iPtr = (Interp *) interp; ExecEnv *eePtr = iPtr->execEnvPtr; Tcl_Obj **resPtr = GrowEvaluationStack(eePtr, numWords, 0); eePtr->execStackPtr->tosPtr += numWords; return resPtr; } static Tcl_Obj ** StackReallocWords( Tcl_Interp *interp, int numWords) { Interp *iPtr = (Interp *) interp; ExecEnv *eePtr = iPtr->execEnvPtr; Tcl_Obj **resPtr = GrowEvaluationStack(eePtr, numWords, 1); eePtr->execStackPtr->tosPtr += numWords; return resPtr; } void TclStackFree( Tcl_Interp *interp, void *freePtr) { Interp *iPtr = (Interp *) interp; ExecEnv *eePtr; ExecStack *esPtr; Tcl_Obj **markerPtr; if (iPtr == NULL || iPtr->execEnvPtr == NULL) { Tcl_Free((char *) freePtr); return; } /* * Rewind the stack to the previous marker position. The current marker, * as set in the last call to GrowEvaluationStack, contains a pointer to * the previous marker. */ eePtr = iPtr->execEnvPtr; esPtr = eePtr->execStackPtr; markerPtr = esPtr->markerPtr; if (MEMSTART(markerPtr) != (Tcl_Obj **)freePtr) { Tcl_Panic("TclStackFree: incorrect freePtr. Call out of sequence?"); } esPtr->tosPtr = markerPtr-1; esPtr->markerPtr = (Tcl_Obj **) *markerPtr; if (*markerPtr) { return; } /* * Return to previous stack. */ esPtr->tosPtr = &esPtr->stackWords[-1]; if (esPtr->prevPtr) { eePtr->execStackPtr = esPtr->prevPtr; } if (esPtr->nextPtr) { if (!esPtr->prevPtr) { eePtr->execStackPtr = esPtr->nextPtr; } DeleteExecStack(esPtr); } } void * TclStackAlloc( Tcl_Interp *interp, int numBytes) { Interp *iPtr = (Interp *) interp; int numWords = (numBytes + (sizeof(Tcl_Obj *) - 1))/sizeof(Tcl_Obj *); if (iPtr == NULL || iPtr->execEnvPtr == NULL) { return (void *) Tcl_Alloc(numBytes); } return (void *) StackAllocWords(interp, numWords); } void * TclStackRealloc( Tcl_Interp *interp, void *ptr, int numBytes) { Interp *iPtr = (Interp *) interp; ExecEnv *eePtr; ExecStack *esPtr; Tcl_Obj **markerPtr; int numWords; if (iPtr == NULL || iPtr->execEnvPtr == NULL) { return (void *) Tcl_Realloc((char *) ptr, numBytes); } eePtr = iPtr->execEnvPtr; esPtr = eePtr->execStackPtr; markerPtr = esPtr->markerPtr; if (MEMSTART(markerPtr) != (Tcl_Obj **)ptr) { Tcl_Panic("TclStackRealloc: incorrect ptr. Call out of sequence?"); } numWords = (numBytes + (sizeof(Tcl_Obj *) - 1))/sizeof(Tcl_Obj *); return (void *) StackReallocWords(interp, numWords); }  /* *-------------------------------------------------------------- * * Tcl_ExprObj -- * * Evaluate an expression in a Tcl_Obj. * * Results: * A standard Tcl object result. If the result is other than TCL_OK, then * the interpreter's result contains an error message. If the result is * TCL_OK, then a pointer to the expression's result value object is * stored in resultPtrPtr. In that case, the object's ref count is * incremented to reflect the reference returned to the caller; the * caller is then responsible for the resulting object and must, for * example, decrement the ref count when it is finished with the object. * * Side effects: * Any side effects caused by subcommands in the expression, if any. The * interpreter result is not modified unless there is an error. * *-------------------------------------------------------------- */ int Tcl_ExprObj( Tcl_Interp *interp, /* Context in which to evaluate the * expression. */ register Tcl_Obj *objPtr, /* Points to Tcl object containing expression * to evaluate. */ Tcl_Obj **resultPtrPtr) /* Where the Tcl_Obj* that is the expression * result is stored if no errors occur. */ { Interp *iPtr = (Interp *) interp; CompileEnv compEnv; /* Compilation environment structure allocated * in frame. */ register ByteCode *codePtr = NULL; /* Tcl Internal type of bytecode. Initialized * to avoid compiler warning. */ Tcl_Obj *saveObjPtr; int result; /* * Get the ByteCode from the object. If it exists, make sure it hasn't * been invalidated by, e.g., someone redefining a command with a compile * procedure (this might make the compiled code wrong). If necessary, * convert the object to be a ByteCode object and compile it. Also, if the * code was compiled in/for a different interpreter, we recompile it. * * Precompiled expressions, however, are immutable and therefore they are * not recompiled, even if the epoch has changed. */ if (objPtr->typePtr == &tclByteCodeType) { codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; if (((Interp *) *codePtr->interpHandle != iPtr) || (codePtr->compileEpoch != iPtr->compileEpoch)) { if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) { if ((Interp *) *codePtr->interpHandle != iPtr) { Tcl_Panic("Tcl_ExprObj: compiled expression jumped interps"); } codePtr->compileEpoch = iPtr->compileEpoch; } else { objPtr->typePtr->freeIntRepProc(objPtr); objPtr->typePtr = (Tcl_ObjType *) NULL; } } } if (objPtr->typePtr != &tclByteCodeType) { /* * TIP #280: No invoker (yet) - Expression compilation. */ int length; const char *string = TclGetStringFromObj(objPtr, &length); TclInitCompileEnv(interp, &compEnv, string, length, NULL, 0); TclCompileExpr(interp, string, length, &compEnv, 0); /* * Successful compilation. If the expression yielded no instructions, * push an zero object as the expression's result. */ if (compEnv.codeNext == compEnv.codeStart) { TclEmitPush(TclRegisterNewLiteral(&compEnv, "0", 1), &compEnv); } /* * Add a "done" instruction as the last instruction and change the * object into a ByteCode object. Ownership of the literal objects and * aux data items is given to the ByteCode object. */ TclEmitOpcode(INST_DONE, &compEnv); TclInitByteCodeObj(objPtr, &compEnv); TclFreeCompileEnv(&compEnv); codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; #ifdef TCL_COMPILE_DEBUG if (tclTraceCompile == 2) { TclPrintByteCodeObj(interp, objPtr); fflush(stdout); } #endif /* TCL_COMPILE_DEBUG */ } /* * Execute the expression after first saving the interpreter's result. */ saveObjPtr = Tcl_GetObjResult(interp); Tcl_IncrRefCount(saveObjPtr); Tcl_ResetResult(interp); /* * Increment the code's ref count while it is being executed. If * afterwards no references to it remain, free the code. */ codePtr->refCount++; result = TclExecuteByteCode(interp, codePtr); codePtr->refCount--; if (codePtr->refCount <= 0) { TclCleanupByteCode(codePtr); objPtr->typePtr = NULL; objPtr->internalRep.otherValuePtr = NULL; } /* * If the expression evaluated successfully, store a pointer to its value * object in resultPtrPtr then restore the old interpreter result. We * increment the object's ref count to reflect the reference that we are * returning to the caller. We also decrement the ref count of the * interpreter's result object after calling Tcl_SetResult since we next * store into that field directly. */ if (result == TCL_OK) { *resultPtrPtr = iPtr->objResultPtr; Tcl_IncrRefCount(iPtr->objResultPtr); Tcl_SetObjResult(interp, saveObjPtr); } TclDecrRefCount(saveObjPtr); return result; }  /* *---------------------------------------------------------------------- * * TclCompEvalObj -- * * This procedure evaluates the script contained in a Tcl_Obj by first * compiling it and then passing it to TclExecuteByteCode. * * Results: * The return value is one of the return codes defined in tcl.h (such as * TCL_OK), and interp->objResultPtr refers to a Tcl object that either * contains the result of executing the code or an error message. * * Side effects: * Almost certainly, depending on the ByteCode's instructions. * *---------------------------------------------------------------------- */ int TclCompEvalObj( Tcl_Interp *interp, Tcl_Obj *objPtr, const CmdFrame *invoker, int word) { register Interp *iPtr = (Interp *) interp; register ByteCode *codePtr; /* Tcl Internal type of bytecode. */ int result; Namespace *namespacePtr; /* * Check that the interpreter is ready to execute scripts. Note that we * manage the interp's runlevel here: it is a small white lie (maybe), but * saves a ++/-- pair at each invocation. Amazingly enough, the impact on * performance is noticeable. */ iPtr->numLevels++; if (TclInterpReady(interp) == TCL_ERROR) { result = TCL_ERROR; goto done; } namespacePtr = iPtr->varFramePtr->nsPtr; /* * If the object is not already of tclByteCodeType, compile it (and reset * the compilation flags in the interpreter; this should be done after any * compilation). Otherwise, check that it is "fresh" enough. */ if (objPtr->typePtr == &tclByteCodeType) { /* * Make sure the Bytecode hasn't been invalidated by, e.g., someone * redefining a command with a compile procedure (this might make the * compiled code wrong). The object needs to be recompiled if it was * compiled in/for a different interpreter, or for a different * namespace, or for the same namespace but with different name * resolution rules. Precompiled objects, however, are immutable and * therefore they are not recompiled, even if the epoch has changed. * * To be pedantically correct, we should also check that the * originating procPtr is the same as the current context procPtr * (assuming one exists at all - none for global level). This code is * #def'ed out because [info body] was changed to never return a * bytecode type object, which should obviate us from the extra checks * here. */ codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; if (((Interp *) *codePtr->interpHandle != iPtr) || (codePtr->compileEpoch != iPtr->compileEpoch) #ifdef CHECK_PROC_ORIGINATION /* [Bug: 3412 Pedantic] */ || codePtr->procPtr != iPtr->varFramePtr->procPtr #endif || (codePtr->nsPtr != namespacePtr) || (codePtr->nsEpoch != namespacePtr->resolverEpoch)) { if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) { if ((Interp *) *codePtr->interpHandle != iPtr) { Tcl_Panic("Tcl_EvalObj: compiled script jumped interps"); } codePtr->compileEpoch = iPtr->compileEpoch; } else { /* * This byteCode is invalid: free it and recompile. */ objPtr->typePtr->freeIntRepProc(objPtr); goto recompileObj; } } /* * Increment the code's ref count while it is being executed. If * afterwards no references to it remain, free the code. */ runCompiledObj: codePtr->refCount++; result = TclExecuteByteCode(interp, codePtr); codePtr->refCount--; if (codePtr->refCount <= 0) { TclCleanupByteCode(codePtr); } goto done; } recompileObj: iPtr->errorLine = 1; /* * TIP #280. Remember the invoker for a moment in the interpreter * structures so that the byte code compiler can pick it up when * initializing the compilation environment, i.e. the extended location * information. */ iPtr->invokeCmdFramePtr = invoker; iPtr->invokeWord = word; tclByteCodeType.setFromAnyProc(interp, objPtr); iPtr->invokeCmdFramePtr = NULL; codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; goto runCompiledObj; done: iPtr->numLevels--; return result; }  /* *---------------------------------------------------------------------- * * TclIncrObj -- * * Increment an integeral value in a Tcl_Obj by an integeral value held * in another Tcl_Obj. Caller is responsible for making sure we can * update the first object. * * Results: * TCL_ERROR if either object is non-integer, and TCL_OK otherwise. On * error, an error message is left in the interpreter (if it is not NULL, * of course). * * Side effects: * valuePtr gets the new incrmented value. * *---------------------------------------------------------------------- */ int TclIncrObj( Tcl_Interp *interp, Tcl_Obj *valuePtr, Tcl_Obj *incrPtr) { ClientData ptr1, ptr2; int type1, type2; mp_int value, incr; if (Tcl_IsShared(valuePtr)) { Tcl_Panic("%s called with shared object", "TclIncrObj"); } if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) { /* * Produce error message (reparse?!) */ return TclGetIntFromObj(interp, valuePtr, &type1); } if (GetNumberFromObj(NULL, incrPtr, &ptr2, &type2) != TCL_OK) { /* * Produce error message (reparse?!) */ TclGetIntFromObj(interp, incrPtr, &type1); Tcl_AddErrorInfo(interp, "\n (reading increment)"); return TCL_ERROR; } if ((type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) { long augend = *((const long *) ptr1); long addend = *((const long *) ptr2); long sum = augend + addend; /* * Overflow when (augend and sum have different sign) and (augend and * addend have the same sign). This is encapsulated in the Overflowing * macro. */ if (!Overflowing(augend, addend, sum)) { TclSetLongObj(valuePtr, sum); return TCL_OK; } #ifndef NO_WIDE_TYPE { Tcl_WideInt w1 = (Tcl_WideInt) augend; Tcl_WideInt w2 = (Tcl_WideInt) addend; /* * We know the sum value is outside the long range, so we use the * macro form that doesn't range test again. */ TclSetWideIntObj(valuePtr, w1 + w2); return TCL_OK; } #endif } if ((type1 == TCL_NUMBER_DOUBLE) || (type1 == TCL_NUMBER_NAN)) { /* * Produce error message (reparse?!) */ return TclGetIntFromObj(interp, valuePtr, &type1); } if ((type2 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_NAN)) { /* * Produce error message (reparse?!) */ TclGetIntFromObj(interp, incrPtr, &type1); Tcl_AddErrorInfo(interp, "\n (reading increment)"); return TCL_ERROR; } #ifndef NO_WIDE_TYPE if ((type1 != TCL_NUMBER_BIG) && (type2 != TCL_NUMBER_BIG)) { Tcl_WideInt w1, w2, sum; TclGetWideIntFromObj(NULL, valuePtr, &w1); TclGetWideIntFromObj(NULL, incrPtr, &w2); sum = w1 + w2; /* * Check for overflow. */ if (!Overflowing(w1, w2, sum)) { Tcl_SetWideIntObj(valuePtr, sum); return TCL_OK; } } #endif Tcl_TakeBignumFromObj(interp, valuePtr, &value); Tcl_GetBignumFromObj(interp, incrPtr, &incr); mp_add(&value, &incr, &value); mp_clear(&incr); Tcl_SetBignumObj(valuePtr, &value); return TCL_OK; }  /* *---------------------------------------------------------------------- * * TclExecuteByteCode -- * * This procedure executes the instructions of a ByteCode structure. It * returns when a "done" instruction is executed or an error occurs. * * Results: * The return value is one of the return codes defined in tcl.h (such as * TCL_OK), and interp->objResultPtr refers to a Tcl object that either * contains the result of executing the code or an error message. * * Side effects: * Almost certainly, depending on the ByteCode's instructions. * *---------------------------------------------------------------------- */ int TclExecuteByteCode( Tcl_Interp *interp, /* Token for command interpreter. */ ByteCode *codePtr) /* The bytecode sequence to interpret. */ { /* * Compiler cast directive - not a real variable. * Interp *iPtr = (Interp *) interp; */ #define iPtr ((Interp *) interp) /* * Check just the read-traced/write-traced bit of a variable. */ #define ReadTraced(varPtr) ((varPtr)->flags & VAR_TRACED_READ) #define WriteTraced(varPtr) ((varPtr)->flags & VAR_TRACED_WRITE) /* * Constants: variables that do not change during the execution, used * sporadically. */ ExecStack *esPtr; Tcl_Obj **initTosPtr; /* Stack top at start of execution. */ ptrdiff_t *initCatchTop; /* Catch stack top at start of execution. */ Var *compiledLocals; Namespace *namespacePtr; CmdFrame *bcFramePtr; /* TIP #280: Structure for tracking lines. */ Tcl_Obj **constants = &iPtr->execEnvPtr->constants[0]; /* * Globals: variables that store state, must remain valid at all times. */ ptrdiff_t *catchTop; register Tcl_Obj **tosPtr; /* Cached pointer to top of evaluation * stack. */ register unsigned char *pc = codePtr->codeStart; /* The current program counter. */ int instructionCount = 0; /* Counter that is used to work out when to * call Tcl_AsyncReady() */ Tcl_Obj *expandNestList = NULL; int checkInterp = 0; /* Indicates when a check of interp readyness * is necessary. Set by CACHE_STACK_INFO() */ /* * Transfer variables - needed only between opcodes, but not while * executing an instruction. */ register int cleanup; Tcl_Obj *objResultPtr; /* * Result variable - needed only when going to checkForcatch or other * error handlers; also used as local in some opcodes. */ int result = TCL_OK; /* Return code returned after execution. */ /* * Locals - variables that are used within opcodes or bounded sections of * the file (jumps between opcodes within a family). * NOTE: These are now defined locally where needed. */ #ifdef TCL_COMPILE_DEBUG int traceInstructions = (tclTraceExec == 3); char cmdNameBuf[21]; #endif char *curInstName = NULL; /* * The execution uses a unified stack: first the catch stack, immediately * above it a CmdFrame, then the execution stack. * * Make sure the catch stack is large enough to hold the maximum number of * catch commands that could ever be executing at the same time (this will * be no more than the exception range array's depth). Make sure the * execution stack is large enough to execute this ByteCode. */ catchTop = initCatchTop = (ptrdiff_t *) ( GrowEvaluationStack(iPtr->execEnvPtr, codePtr->maxExceptDepth + sizeof(CmdFrame) + codePtr->maxStackDepth, 0) - 1); bcFramePtr = (CmdFrame *) (initCatchTop + codePtr->maxExceptDepth + 1); tosPtr = initTosPtr = ((Tcl_Obj **) (bcFramePtr + 1)) - 1; esPtr = iPtr->execEnvPtr->execStackPtr; /* * TIP #280: Initialize the frame. Do not push it yet. */ bcFramePtr->type = ((codePtr->flags & TCL_BYTECODE_PRECOMPILED) ? TCL_LOCATION_PREBC : TCL_LOCATION_BC); bcFramePtr->level = (iPtr->cmdFramePtr ? iPtr->cmdFramePtr->level+1 : 1); bcFramePtr->framePtr = iPtr->framePtr; bcFramePtr->nextPtr = iPtr->cmdFramePtr; bcFramePtr->nline = 0; bcFramePtr->line = NULL; bcFramePtr->data.tebc.codePtr = codePtr; bcFramePtr->data.tebc.pc = NULL; bcFramePtr->cmd.str.cmd = NULL; bcFramePtr->cmd.str.len = 0; #ifdef TCL_COMPILE_DEBUG if (tclTraceExec >= 2) { PrintByteCodeInfo(codePtr); fprintf(stdout, " Starting stack top=%d\n", CURR_DEPTH); fflush(stdout); } #endif #ifdef TCL_COMPILE_STATS iPtr->stats.numExecutions++; #endif namespacePtr = iPtr->varFramePtr->nsPtr; compiledLocals = iPtr->varFramePtr->compiledLocals; /* * Loop executing instructions until a "done" instruction, a TCL_RETURN, * or some error. */ goto cleanup0; /* * Targets for standard instruction endings; unrolled for speed in the * most frequent cases (instructions that consume up to two stack * elements). * * This used to be a "for(;;)" loop, with each instruction doing its own * cleanup. */ { Tcl_Obj *valuePtr; cleanupV_pushObjResultPtr: switch (cleanup) { case 0: *(++tosPtr) = (objResultPtr); goto cleanup0; default: cleanup -= 2; while (cleanup--) { valuePtr = POP_OBJECT(); TclDecrRefCount(valuePtr); } case 2: cleanup2_pushObjResultPtr: valuePtr = POP_OBJECT(); TclDecrRefCount(valuePtr); case 1: cleanup1_pushObjResultPtr: valuePtr = OBJ_AT_TOS; TclDecrRefCount(valuePtr); } OBJ_AT_TOS = objResultPtr; goto cleanup0; cleanupV: switch (cleanup) { default: cleanup -= 2; while (cleanup--) { valuePtr = POP_OBJECT(); TclDecrRefCount(valuePtr); } case 2: cleanup2: valuePtr = POP_OBJECT(); TclDecrRefCount(valuePtr); case 1: cleanup1: valuePtr = POP_OBJECT(); TclDecrRefCount(valuePtr); case 0: /* * We really want to do nothing now, but this is needed for some * compilers (SunPro CC). */ break; } } cleanup0: #ifdef TCL_COMPILE_DEBUG /* * Skip the stack depth check if an expansion is in progress. */ ValidatePcAndStackTop(codePtr, pc, CURR_DEPTH, 0, /*checkStack*/ expandNestList == NULL); if (traceInstructions) { fprintf(stdout, "%2d: %2d ", iPtr->numLevels, (int) CURR_DEPTH); TclPrintInstruction(codePtr, pc); fflush(stdout); } #endif /* TCL_COMPILE_DEBUG */ #ifdef TCL_COMPILE_STATS iPtr->stats.instructionCount[*pc]++; #endif /* * Check for asynchronous handlers [Bug 746722]; we do the check every * ASYNC_CHECK_COUNT_MASK instruction, of the form (2**n-1). */ if ((instructionCount++ & ASYNC_CHECK_COUNT_MASK) == 0) { /* * Check for asynchronous handlers [Bug 746722]; we do the check every * ASYNC_CHECK_COUNT_MASK instruction, of the form (2**n-<1). */ if (TclAsyncReady(iPtr)) { int localResult; DECACHE_STACK_INFO(); localResult = Tcl_AsyncInvoke(interp, result); CACHE_STACK_INFO(); if (localResult == TCL_ERROR) { result = localResult; goto checkForCatch; } } if (TclLimitReady(iPtr->limit)) { int localResult; DECACHE_STACK_INFO(); localResult = Tcl_LimitCheck(interp); CACHE_STACK_INFO(); if (localResult == TCL_ERROR) { result = localResult; goto checkForCatch; } } } TCL_DTRACE_INST_NEXT(); /* * These two instructions account for 26% of all instructions (according * to measurements on tclbench by Ben Vitale * [http://www.cs.toronto.edu/syslab/pubs/tcl2005-vitale-zaleski.pdf] * Resolving them before the switch reduces the cost of branch * mispredictions, seems to improve runtime by 5% to 15%, and (amazingly!) * reduces total obj size. */ if (*pc == INST_LOAD_SCALAR1) { goto instLoadScalar1; } else if (*pc == INST_PUSH1) { goto instPush1Peephole; } switch (*pc) { case INST_SYNTAX: case INST_RETURN_IMM: { int code = TclGetInt4AtPtr(pc+1); int level = TclGetUInt4AtPtr(pc+5); /* * OBJ_AT_TOS is returnOpts, OBJ_UNDER_TOS is resultObjPtr. */ TRACE(("%u %u => ", code, level)); result = TclProcessReturn(interp, code, level, OBJ_AT_TOS); if (result == TCL_OK) { TRACE_APPEND(("continuing to next instruction (result=\"%.30s\")", O2S(objResultPtr))); NEXT_INST_F(9, 1, 0); } else { Tcl_SetObjResult(interp, OBJ_UNDER_TOS); if (*pc == INST_SYNTAX) { iPtr->flags &= ~ERR_ALREADY_LOGGED; } cleanup = 2; goto processExceptionReturn; } } case INST_RETURN_STK: TRACE(("=> ")); objResultPtr = POP_OBJECT(); result = Tcl_SetReturnOptions(interp, OBJ_AT_TOS); OBJ_AT_TOS = objResultPtr; if (result == TCL_OK) { TRACE_APPEND(("continuing to next instruction (result=\"%.30s\")", O2S(objResultPtr))); NEXT_INST_F(1, 0, 0); } else { Tcl_SetObjResult(interp, objResultPtr); cleanup = 1; goto processExceptionReturn; } case INST_DONE: if (tosPtr > initTosPtr) { /* * Set the interpreter's object result to point to the topmost * object from the stack, and check for a possible [catch]. The * stackTop's level and refCount will be handled by "processCatch" * or "abnormalReturn". */ Tcl_SetObjResult(interp, OBJ_AT_TOS); #ifdef TCL_COMPILE_DEBUG TRACE_WITH_OBJ(("=> return code=%d, result=", result), iPtr->objResultPtr); if (traceInstructions) { fprintf(stdout, "\n"); } #endif goto checkForCatch; } else { (void) POP_OBJECT(); goto abnormalReturn; } case INST_PUSH1: instPush1Peephole: PUSH_OBJECT(codePtr->objArrayPtr[TclGetUInt1AtPtr(pc+1)]); TRACE_WITH_OBJ(("%u => ", TclGetInt1AtPtr(pc+1)), OBJ_AT_TOS); pc += 2; #if !TCL_COMPILE_DEBUG /* * Runtime peephole optimisation: check if we are pushing again. */ if (*pc == INST_PUSH1) { TCL_DTRACE_INST_NEXT(); goto instPush1Peephole; } #endif NEXT_INST_F(0, 0, 0); case INST_PUSH4: objResultPtr = codePtr->objArrayPtr[TclGetUInt4AtPtr(pc+1)]; TRACE_WITH_OBJ(("%u => ", TclGetUInt4AtPtr(pc+1)), objResultPtr); NEXT_INST_F(5, 0, 1); case INST_POP: { Tcl_Obj *valuePtr; TRACE_WITH_OBJ(("=> discarding "), OBJ_AT_TOS); valuePtr = POP_OBJECT(); TclDecrRefCount(valuePtr); /* * Runtime peephole optimisation: an INST_POP is scheduled at the end * of most commands. If the next instruction is an INST_START_CMD, * fall through to it. */ pc++; #if !TCL_COMPILE_DEBUG if (*pc == INST_START_CMD) { TCL_DTRACE_INST_NEXT(); goto instStartCmdPeephole; } #endif NEXT_INST_F(0, 0, 0); } case INST_START_CMD: #if !TCL_COMPILE_DEBUG instStartCmdPeephole: #endif /* * Remark that if the interpreter is marked for deletion its * compileEpoch is modified, so that the epoch check also verifies * that the interp is not deleted. If no outside call has been made * since the last check, it is safe to omit the check. */ iPtr->cmdCount += TclGetUInt4AtPtr(pc+5); if (!checkInterp) { instStartCmdOK: NEXT_INST_F(9, 0, 0); } else if (((codePtr->compileEpoch == iPtr->compileEpoch) && (codePtr->nsEpoch == namespacePtr->resolverEpoch)) || (codePtr->flags & TCL_BYTECODE_PRECOMPILED)) { checkInterp = 0; goto instStartCmdOK; } else { const char *bytes; int length, opnd; Tcl_Obj *newObjResultPtr; bytes = GetSrcInfoForPc(pc, codePtr, &length); DECACHE_STACK_INFO(); result = Tcl_EvalEx(interp, bytes, length, 0); CACHE_STACK_INFO(); if (result != TCL_OK) { cleanup = 0; goto processExceptionReturn; } opnd = TclGetUInt4AtPtr(pc+1); objResultPtr = Tcl_GetObjResult(interp); TclNewObj(newObjResultPtr); Tcl_IncrRefCount(newObjResultPtr); iPtr->objResultPtr = newObjResultPtr; NEXT_INST_V(opnd, 0, -1); } case INST_DUP: objResultPtr = OBJ_AT_TOS; TRACE_WITH_OBJ(("=> "), objResultPtr); NEXT_INST_F(1, 0, 1); case INST_OVER: { int opnd; opnd = TclGetUInt4AtPtr(pc+1); objResultPtr = OBJ_AT_DEPTH(opnd); TRACE_WITH_OBJ(("=> "), objResultPtr); NEXT_INST_F(5, 0, 1); } case INST_REVERSE: { int opnd; Tcl_Obj **a, **b; opnd = TclGetUInt4AtPtr(pc+1); a = tosPtr-(opnd-1); b = tosPtr; while (a<b) { Tcl_Obj *temp = *a; *a = *b; *b = temp; a++; b--; } NEXT_INST_F(5, 0, 0); } case INST_CONCAT1: { int opnd, length, appendLen = 0; char *bytes, *p; Tcl_Obj **currPtr; opnd = TclGetUInt1AtPtr(pc+1); /* * Compute the length to be appended. */ for (currPtr=&OBJ_AT_DEPTH(opnd-2); currPtr<=&OBJ_AT_TOS; currPtr++) { bytes = TclGetStringFromObj(*currPtr, &length); if (bytes != NULL) { appendLen += length; } } /* * If nothing is to be appended, just return the first object by * dropping all the others from the stack; this saves both the * computation and copy of the string rep of the first object, * enabling the fast '$x[set x {}]' idiom for 'K $x [set x {}]'. */ if (appendLen == 0) { TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr); NEXT_INST_V(2, (opnd-1), 0); } /* * If the first object is shared, we need a new obj for the result; * otherwise, we can reuse the first object. In any case, make sure it * has enough room to accomodate all the concatenated bytes. Note that * if it is unshared its bytes are copied by ckrealloc, so that we set * the loop parameters to avoid copying them again: p points to the * end of the already copied bytes, currPtr to the second object. */ objResultPtr = OBJ_AT_DEPTH(opnd-1); bytes = TclGetStringFromObj(objResultPtr, &length); #if !TCL_COMPILE_DEBUG if (bytes != tclEmptyStringRep && !Tcl_IsShared(objResultPtr)) { TclFreeIntRep(objResultPtr); objResultPtr->typePtr = NULL; objResultPtr->bytes = ckrealloc(bytes, (length + appendLen + 1)); objResultPtr->length = length + appendLen; p = TclGetString(objResultPtr) + length; currPtr = &OBJ_AT_DEPTH(opnd - 2); } else { #endif p = (char *) ckalloc((unsigned) (length + appendLen + 1)); TclNewObj(objResultPtr); objResultPtr->bytes = p; objResultPtr->length = length + appendLen; currPtr = &OBJ_AT_DEPTH(opnd - 1); #if !TCL_COMPILE_DEBUG } #endif /* * Append the remaining characters. */ for (; currPtr <= &OBJ_AT_TOS; currPtr++) { bytes = TclGetStringFromObj(*currPtr, &length); if (bytes != NULL) { memcpy(p, bytes, (size_t) length); p += length; } } *p = '\0'; TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr); NEXT_INST_V(2, opnd, 1); } case INST_EXPAND_START: { /* * Push an element to the expandNestList. This records the current * stack depth - i.e., the point in the stack where the expanded * command starts. * * Use a Tcl_Obj as linked list element; slight mem waste, but faster * allocation than ckalloc. This also abuses the Tcl_Obj structure, as * we do not define a special tclObjType for it. It is not dangerous * as the obj is never passed anywhere, so that all manipulations are * performed here and in INST_INVOKE_EXPANDED (in case of an expansion * error, also in INST_EXPAND_STKTOP). */ Tcl_Obj *objPtr; TclNewObj(objPtr); objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) CURR_DEPTH; objPtr->internalRep.twoPtrValue.ptr2 = (VOID *) expandNestList; expandNestList = objPtr; NEXT_INST_F(1, 0, 0); } case INST_EXPAND_STKTOP: { int objc, length, i; Tcl_Obj **objv, *valuePtr; ptrdiff_t moved; /* * Make sure that the element at stackTop is a list; if not, just * leave with an error. Note that the element from the expand list * will be removed at checkForCatch. */ valuePtr = OBJ_AT_TOS; if (TclListObjGetElements(interp, valuePtr, &objc, &objv) != TCL_OK){ TRACE_WITH_OBJ(("%.30s => ERROR: ", O2S(valuePtr)), Tcl_GetObjResult(interp)); result = TCL_ERROR; goto checkForCatch; } (void) POP_OBJECT(); /* * Make sure there is enough room in the stack to expand this list * *and* process the rest of the command (at least up to the next * argument expansion or command end). The operand is the current * stack depth, as seen by the compiler. */ length = objc + (codePtr->maxStackDepth - TclGetInt4AtPtr(pc+1)); DECACHE_STACK_INFO(); moved = (GrowEvaluationStack(iPtr->execEnvPtr, length, 1) - 1) - (Tcl_Obj **) initCatchTop; if (moved) { /* * Change the global data to point to the new stack. */ initCatchTop += moved; catchTop += moved; initTosPtr += moved; tosPtr += moved; esPtr = iPtr->execEnvPtr->execStackPtr; } /* * Expand the list at stacktop onto the stack; free the list. Knowing * that it has a freeIntRepProc we use Tcl_DecrRefCount(). */ for (i = 0; i < objc; i++) { PUSH_OBJECT(objv[i]); } Tcl_DecrRefCount(valuePtr); NEXT_INST_F(5, 0, 0); } { /* * INVOCATION BLOCK */ int objc, pcAdjustment; case INST_INVOKE_EXPANDED: { Tcl_Obj *objPtr = expandNestList; expandNestList = (Tcl_Obj *) objPtr->internalRep.twoPtrValue.ptr2; objc = CURR_DEPTH - (ptrdiff_t) objPtr->internalRep.twoPtrValue.ptr1; TclDecrRefCount(objPtr); } if (objc) { pcAdjustment = 1; goto doInvocation; } else { /* * Nothing was expanded, return {}. */ TclNewObj(objResultPtr); NEXT_INST_F(1, 0, 1); } case INST_INVOKE_STK4: objc = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; goto doInvocation; case INST_INVOKE_STK1: objc = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; doInvocation: { Tcl_Obj **objv = &OBJ_AT_DEPTH(objc-1); #ifdef TCL_COMPILE_DEBUG if (tclTraceExec >= 2) { int i; if (traceInstructions) { strncpy(cmdNameBuf, TclGetString(objv[0]), 20); TRACE(("%u => call ", objc)); } else { fprintf(stdout, "%d: (%u) invoking ", iPtr->numLevels, (unsigned)(pc - codePtr->codeStart)); } for (i = 0; i < objc; i++) { TclPrintObject(stdout, objv[i], 15); fprintf(stdout, " "); } fprintf(stdout, "\n"); fflush(stdout); } #endif /*TCL_COMPILE_DEBUG*/ /* * Reset the instructionCount variable, since we're about to check * for async stuff anyway while processing TclEvalObjvInternal. */ instructionCount = 1; /* * Finally, let TclEvalObjvInternal handle the command. * * TIP #280: Record the last piece of info needed by * 'TclGetSrcInfoForPc', and push the frame. */ bcFramePtr->data.tebc.pc = (char *) pc; iPtr->cmdFramePtr = bcFramePtr; DECACHE_STACK_INFO(); result = TclEvalObjvInternal(interp, objc, objv, /* call from TEBC */(char *) -1, -1, 0); CACHE_STACK_INFO(); iPtr->cmdFramePtr = iPtr->cmdFramePtr->nextPtr; if (result == TCL_OK) { Tcl_Obj *objPtr; #ifndef TCL_COMPILE_DEBUG if (*(pc+pcAdjustment) == INST_POP) { NEXT_INST_V((pcAdjustment+1), objc, 0); } #endif /* * Push the call's object result and continue execution with * the next instruction. */ TRACE_WITH_OBJ(("%u => ... after \"%.20s\": TCL_OK, result=", objc, cmdNameBuf), Tcl_GetObjResult(interp)); objResultPtr = Tcl_GetObjResult(interp); /* * Reset the interp's result to avoid possible duplications of * large objects [Bug 781585]. We do not call Tcl_ResetResult * to avoid any side effects caused by the resetting of * errorInfo and errorCode [Bug 804681], which are not needed * here. We chose instead to manipulate the interp's object * result directly. * * Note that the result object is now in objResultPtr, it * keeps the refCount it had in its role of * iPtr->objResultPtr. */ TclNewObj(objPtr); Tcl_IncrRefCount(objPtr); iPtr->objResultPtr = objPtr; NEXT_INST_V(pcAdjustment, objc, -1); } else { cleanup = objc; goto processExceptionReturn; } } #if TCL_SUPPORT_84_BYTECODE case INST_CALL_BUILTIN_FUNC1: { /* * Call one of the built-in pre-8.5 Tcl math functions. This * translates to INST_INVOKE_STK1 with the first argument of * ::tcl::mathfunc::$objv[0]. We need to insert the named math * function into the stack. */ int opnd, numArgs; Tcl_Obj *objPtr; opnd = TclGetUInt1AtPtr(pc+1); if ((opnd < 0) || (opnd > LAST_BUILTIN_FUNC)) { TRACE(("UNRECOGNIZED BUILTIN FUNC CODE %d\n", opnd)); Tcl_Panic("TclExecuteByteCode: unrecognized builtin function code %d", opnd); } objPtr = Tcl_NewStringObj("::tcl::mathfunc::", 17); Tcl_AppendToObj(objPtr, tclBuiltinFuncTable[opnd].name, -1); /* * Only 0, 1 or 2 args. */ numArgs = tclBuiltinFuncTable[opnd].numArgs; if (numArgs == 0) { PUSH_OBJECT(objPtr); } else if (numArgs == 1) { Tcl_Obj *tmpPtr1 = POP_OBJECT(); PUSH_OBJECT(objPtr); PUSH_OBJECT(tmpPtr1); Tcl_DecrRefCount(tmpPtr1); } else { Tcl_Obj *tmpPtr1, *tmpPtr2; tmpPtr2 = POP_OBJECT(); tmpPtr1 = POP_OBJECT(); PUSH_OBJECT(objPtr); PUSH_OBJECT(tmpPtr1); PUSH_OBJECT(tmpPtr2); Tcl_DecrRefCount(tmpPtr1); Tcl_DecrRefCount(tmpPtr2); } objc = numArgs + 1; pcAdjustment = 2; goto doInvocation; } case INST_CALL_FUNC1: { /* * Call a non-builtin Tcl math function previously registered by a * call to Tcl_CreateMathFunc pre-8.5. This is essentially * INST_INVOKE_STK1 converting the first arg to * ::tcl::mathfunc::$objv[0]. */ Tcl_Obj *tmpPtr, *objPtr; /* * Number of arguments. The function name is the 0-th argument. */ objc = TclGetUInt1AtPtr(pc+1); objPtr = OBJ_AT_DEPTH(objc-1); tmpPtr = Tcl_NewStringObj("::tcl::mathfunc::", 17); Tcl_AppendObjToObj(tmpPtr, objPtr); Tcl_DecrRefCount(objPtr); /* * Variation of PUSH_OBJECT. */ OBJ_AT_DEPTH(objc-1) = tmpPtr; Tcl_IncrRefCount(tmpPtr); pcAdjustment = 2; goto doInvocation; } #else /* * INST_CALL_BUILTIN_FUNC1 and INST_CALL_FUNC1 were made obsolete by the * changes to add a ::tcl::mathfunc namespace in 8.5. Optional support * remains for existing bytecode precompiled files. */ case INST_CALL_BUILTIN_FUNC1: Tcl_Panic("TclExecuteByteCode: obsolete INST_CALL_BUILTIN_FUNC1 found"); case INST_CALL_FUNC1: Tcl_Panic("TclExecuteByteCode: obsolete INST_CALL_FUNC1 found"); #endif } case INST_EVAL_STK: { /* * Note to maintainers: it is important that INST_EVAL_STK pop its * argument from the stack before jumping to checkForCatch! DO NOT * OPTIMISE! */ Tcl_Obj *objPtr = OBJ_AT_TOS; DECACHE_STACK_INFO(); /* * TIP #280: The invoking context is left NULL for a dynamically * constructed command. We cannot match its lines to the outer * context. */ result = TclCompEvalObj(interp, objPtr, NULL, 0); CACHE_STACK_INFO(); if (result == TCL_OK) { /* * Normal return; push the eval's object result. */ objResultPtr = Tcl_GetObjResult(interp); TRACE_WITH_OBJ(("\"%.30s\" => ", O2S(objPtr)), Tcl_GetObjResult(interp)); /* * Reset the interp's result to avoid possible duplications of * large objects [Bug 781585]. We do not call Tcl_ResetResult to * avoid any side effects caused by the resetting of errorInfo and * errorCode [Bug 804681], which are not needed here. We chose * instead to manipulate the interp's object result directly. * * Note that the result object is now in objResultPtr, it keeps * the refCount it had in its role of iPtr->objResultPtr. */ TclNewObj(objPtr); Tcl_IncrRefCount(objPtr); iPtr->objResultPtr = objPtr; NEXT_INST_F(1, 1, -1); } else { cleanup = 1; goto processExceptionReturn; } } case INST_EXPR_STK: { Tcl_Obj *objPtr, *valuePtr; objPtr = OBJ_AT_TOS; DECACHE_STACK_INFO(); /*Tcl_ResetResult(interp);*/ result = Tcl_ExprObj(interp, objPtr, &valuePtr); CACHE_STACK_INFO(); if (result == TCL_OK) { objResultPtr = valuePtr; TRACE_WITH_OBJ(("\"%.30s\" => ", O2S(objPtr)), valuePtr); NEXT_INST_F(1, 1, -1); /* Already has right refct. */ } else { TRACE_WITH_OBJ(("\"%.30s\" => ERROR: ", O2S(objPtr)), Tcl_GetObjResult(interp)); goto checkForCatch; } } /* * --------------------------------------------------------- * Start of INST_LOAD instructions. * * WARNING: more 'goto' here than your doctor recommended! The different * instructions set the value of some variables and then jump to some * common execution code. */ { int opnd, pcAdjustment; Tcl_Obj *part1Ptr, *part2Ptr; Var *varPtr, *arrayPtr; Tcl_Obj *objPtr; case INST_LOAD_SCALAR1: instLoadScalar1: opnd = TclGetUInt1AtPtr(pc+1); varPtr = &(compiledLocals[opnd]); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u => ", opnd)); if (TclIsVarDirectReadable(varPtr)) { /* * No errors, no traces: just get the value. */ objResultPtr = varPtr->value.objPtr; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(2, 0, 1); } pcAdjustment = 2; cleanup = 0; arrayPtr = NULL; part1Ptr = part2Ptr = NULL; goto doCallPtrGetVar; case INST_LOAD_SCALAR4: opnd = TclGetUInt4AtPtr(pc+1); varPtr = &(compiledLocals[opnd]); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u => ", opnd)); if (TclIsVarDirectReadable(varPtr)) { /* * No errors, no traces: just get the value. */ objResultPtr = varPtr->value.objPtr; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(5, 0, 1); } pcAdjustment = 5; cleanup = 0; arrayPtr = NULL; part1Ptr = part2Ptr = NULL; goto doCallPtrGetVar; case INST_LOAD_ARRAY4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; goto doLoadArray; case INST_LOAD_ARRAY1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; doLoadArray: part1Ptr = NULL; part2Ptr = OBJ_AT_TOS; arrayPtr = &(compiledLocals[opnd]); while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } TRACE(("%u \"%.30s\" => ", opnd, O2S(part2Ptr))); if (TclIsVarArray(arrayPtr) && !ReadTraced(arrayPtr)) { varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr); if (varPtr && TclIsVarDirectReadable(varPtr)) { /* * No errors, no traces: just get the value. */ objResultPtr = varPtr->value.objPtr; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(pcAdjustment, 1, 1); } } varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, "read", 0, 1, arrayPtr, opnd); if (varPtr == NULL) { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; goto checkForCatch; } cleanup = 1; goto doCallPtrGetVar; case INST_LOAD_ARRAY_STK: cleanup = 2; part2Ptr = OBJ_AT_TOS; /* element name */ objPtr = OBJ_UNDER_TOS; /* array name */ TRACE(("\"%.30s(%.30s)\" => ", O2S(objPtr), O2S(part2Ptr))); goto doLoadStk; case INST_LOAD_STK: case INST_LOAD_SCALAR_STK: cleanup = 1; part2Ptr = NULL; objPtr = OBJ_AT_TOS; /* variable name */ TRACE(("\"%.30s\" => ", O2S(objPtr))); doLoadStk: part1Ptr = objPtr; varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, "read", /*createPart1*/0, /*createPart2*/1, &arrayPtr); if (varPtr) { if (TclIsVarDirectReadable2(varPtr, arrayPtr)) { /* * No errors, no traces: just get the value. */ objResultPtr = varPtr->value.objPtr; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(1, cleanup, 1); } pcAdjustment = 1; opnd = -1; goto doCallPtrGetVar; } else { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; goto checkForCatch; } doCallPtrGetVar: /* * There are either errors or the variable is traced: call * TclPtrGetVar to process fully. */ DECACHE_STACK_INFO(); objResultPtr = TclPtrGetVar(interp, varPtr, arrayPtr, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); if (objResultPtr) { TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(pcAdjustment, cleanup, 1); } else { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; goto checkForCatch; } } /* * End of INST_LOAD instructions. * --------------------------------------------------------- */ /* * --------------------------------------------------------- * Start of INST_STORE and related instructions. * * WARNING: more 'goto' here than your doctor recommended! The different * instructions set the value of some variables and then jump to somme * common execution code. */ { int opnd, pcAdjustment, storeFlags; Tcl_Obj *part1Ptr, *part2Ptr; Var *varPtr, *arrayPtr; Tcl_Obj *objPtr, *valuePtr; case INST_STORE_ARRAY4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; goto doStoreArrayDirect; case INST_STORE_ARRAY1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; doStoreArrayDirect: valuePtr = OBJ_AT_TOS; part2Ptr = OBJ_UNDER_TOS; arrayPtr = &(compiledLocals[opnd]); TRACE(("%u \"%.30s\" <- \"%.30s\" => ", opnd, O2S(part2Ptr), O2S(valuePtr))); while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } if (TclIsVarArray(arrayPtr) && !WriteTraced(arrayPtr)) { varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr); if (varPtr && TclIsVarDirectWritable(varPtr)) { tosPtr--; Tcl_DecrRefCount(OBJ_AT_TOS); OBJ_AT_TOS = valuePtr; goto doStoreVarDirect; } } cleanup = 2; storeFlags = TCL_LEAVE_ERR_MSG; part1Ptr = NULL; goto doStoreArrayDirectFailed; case INST_STORE_SCALAR4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; goto doStoreScalarDirect; case INST_STORE_SCALAR1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; doStoreScalarDirect: valuePtr = OBJ_AT_TOS; varPtr = &(compiledLocals[opnd]); TRACE(("%u <- \"%.30s\" => ", opnd, O2S(valuePtr))); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } if (TclIsVarDirectWritable(varPtr)) { doStoreVarDirect: /* * No traces, no errors, plain 'set': we can safely inline. The * value *will* be set to what's requested, so that the stack top * remains pointing to the same Tcl_Obj. */ valuePtr = varPtr->value.objPtr; if (valuePtr != NULL) { TclDecrRefCount(valuePtr); } objResultPtr = OBJ_AT_TOS; varPtr->value.objPtr = objResultPtr; #ifndef TCL_COMPILE_DEBUG if (*(pc+pcAdjustment) == INST_POP) { tosPtr--; NEXT_INST_F((pcAdjustment+1), 0, 0); } #else TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); #endif Tcl_IncrRefCount(objResultPtr); NEXT_INST_F(pcAdjustment, 0, 0); } storeFlags = TCL_LEAVE_ERR_MSG; part1Ptr = NULL; goto doStoreScalar; case INST_LAPPEND_STK: valuePtr = OBJ_AT_TOS; /* value to append */ part2Ptr = NULL; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT | TCL_TRACE_READS); goto doStoreStk; case INST_LAPPEND_ARRAY_STK: valuePtr = OBJ_AT_TOS; /* value to append */ part2Ptr = OBJ_UNDER_TOS; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT | TCL_TRACE_READS); goto doStoreStk; case INST_APPEND_STK: valuePtr = OBJ_AT_TOS; /* value to append */ part2Ptr = NULL; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreStk; case INST_APPEND_ARRAY_STK: valuePtr = OBJ_AT_TOS; /* value to append */ part2Ptr = OBJ_UNDER_TOS; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreStk; case INST_STORE_ARRAY_STK: valuePtr = OBJ_AT_TOS; part2Ptr = OBJ_UNDER_TOS; storeFlags = TCL_LEAVE_ERR_MSG; goto doStoreStk; case INST_STORE_STK: case INST_STORE_SCALAR_STK: valuePtr = OBJ_AT_TOS; part2Ptr = NULL; storeFlags = TCL_LEAVE_ERR_MSG; doStoreStk: objPtr = OBJ_AT_DEPTH(1 + (part2Ptr != NULL)); /* variable name */ part1Ptr = objPtr; #ifdef TCL_COMPILE_DEBUG if (part2Ptr == NULL) { TRACE(("\"%.30s\" <- \"%.30s\" =>", O2S(part1Ptr),O2S(valuePtr))); } else { TRACE(("\"%.30s(%.30s)\" <- \"%.30s\" => ", O2S(part1Ptr), O2S(part2Ptr), O2S(valuePtr))); } #endif varPtr = TclObjLookupVarEx(interp, objPtr,part2Ptr, TCL_LEAVE_ERR_MSG, "set", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr); if (varPtr) { cleanup = ((part2Ptr == NULL)? 2 : 3); pcAdjustment = 1; opnd = -1; goto doCallPtrSetVar; } else { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; goto checkForCatch; } case INST_LAPPEND_ARRAY4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT | TCL_TRACE_READS); goto doStoreArray; case INST_LAPPEND_ARRAY1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT | TCL_TRACE_READS); goto doStoreArray; case INST_APPEND_ARRAY4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreArray; case INST_APPEND_ARRAY1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreArray; doStoreArray: valuePtr = OBJ_AT_TOS; part2Ptr = OBJ_UNDER_TOS; arrayPtr = &(compiledLocals[opnd]); TRACE(("%u \"%.30s\" <- \"%.30s\" => ", opnd, O2S(part2Ptr), O2S(valuePtr))); while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } cleanup = 2; part1Ptr = NULL; doStoreArrayDirectFailed: varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, "set", 1, 1, arrayPtr, opnd); if (varPtr) { goto doCallPtrSetVar; } else { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; goto checkForCatch; } case INST_LAPPEND_SCALAR4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT | TCL_TRACE_READS); goto doStoreScalar; case INST_LAPPEND_SCALAR1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE | TCL_LIST_ELEMENT | TCL_TRACE_READS); goto doStoreScalar; case INST_APPEND_SCALAR4: opnd = TclGetUInt4AtPtr(pc+1); pcAdjustment = 5; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreScalar; case INST_APPEND_SCALAR1: opnd = TclGetUInt1AtPtr(pc+1); pcAdjustment = 2; storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE); goto doStoreScalar; doStoreScalar: valuePtr = OBJ_AT_TOS; varPtr = &(compiledLocals[opnd]); TRACE(("%u <- \"%.30s\" => ", opnd, O2S(valuePtr))); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } cleanup = 1; arrayPtr = NULL; part1Ptr = part2Ptr = NULL; doCallPtrSetVar: DECACHE_STACK_INFO(); objResultPtr = TclPtrSetVar(interp, varPtr, arrayPtr, part1Ptr, part2Ptr, valuePtr, storeFlags, opnd); CACHE_STACK_INFO(); if (objResultPtr) { #ifndef TCL_COMPILE_DEBUG if (*(pc+pcAdjustment) == INST_POP) { NEXT_INST_V((pcAdjustment+1), cleanup, 0); } #endif TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(pcAdjustment, cleanup, 1); } else { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; goto checkForCatch; } } /* * End of INST_STORE and related instructions. * --------------------------------------------------------- */ /* * --------------------------------------------------------- * Start of INST_INCR instructions. * * WARNING: more 'goto' here than your doctor recommended! The different * instructions set the value of some variables and then jump to somme * common execution code. */ /*TODO: Consider more untangling here; merge with LOAD and STORE ? */ { Tcl_Obj *objPtr, *incrPtr; int opnd, pcAdjustment; #ifndef NO_WIDE_TYPE Tcl_WideInt w; #endif long i; Tcl_Obj *part1Ptr, *part2Ptr; Var *varPtr, *arrayPtr; case INST_INCR_SCALAR1: case INST_INCR_ARRAY1: case INST_INCR_ARRAY_STK: case INST_INCR_SCALAR_STK: case INST_INCR_STK: opnd = TclGetUInt1AtPtr(pc+1); incrPtr = POP_OBJECT(); switch (*pc) { case INST_INCR_SCALAR1: pcAdjustment = 2; goto doIncrScalar; case INST_INCR_ARRAY1: pcAdjustment = 2; goto doIncrArray; default: pcAdjustment = 1; goto doIncrStk; } case INST_INCR_ARRAY_STK_IMM: case INST_INCR_SCALAR_STK_IMM: case INST_INCR_STK_IMM: i = TclGetInt1AtPtr(pc+1); incrPtr = Tcl_NewIntObj(i); Tcl_IncrRefCount(incrPtr); pcAdjustment = 2; doIncrStk: if ((*pc == INST_INCR_ARRAY_STK_IMM) || (*pc == INST_INCR_ARRAY_STK)) { part2Ptr = OBJ_AT_TOS; objPtr = OBJ_UNDER_TOS; TRACE(("\"%.30s(%.30s)\" (by %ld) => ", O2S(objPtr), O2S(part2Ptr), i)); } else { part2Ptr = NULL; objPtr = OBJ_AT_TOS; TRACE(("\"%.30s\" (by %ld) => ", O2S(objPtr), i)); } part1Ptr = objPtr; opnd = -1; varPtr = TclObjLookupVarEx(interp, objPtr, part2Ptr, TCL_LEAVE_ERR_MSG, "read", 1, 1, &arrayPtr); if (varPtr) { cleanup = ((part2Ptr == NULL)? 1 : 2); goto doIncrVar; } else { Tcl_AddObjErrorInfo(interp, "\n (reading value of variable to increment)", -1); TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; Tcl_DecrRefCount(incrPtr); goto checkForCatch; } case INST_INCR_ARRAY1_IMM: opnd = TclGetUInt1AtPtr(pc+1); i = TclGetInt1AtPtr(pc+2); incrPtr = Tcl_NewIntObj(i); Tcl_IncrRefCount(incrPtr); pcAdjustment = 3; doIncrArray: part1Ptr = NULL; part2Ptr = OBJ_AT_TOS; arrayPtr = &(compiledLocals[opnd]); cleanup = 1; while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } TRACE(("%u \"%.30s\" (by %ld) => ", opnd, O2S(part2Ptr), i)); varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, "read", 1, 1, arrayPtr, opnd); if (varPtr) { goto doIncrVar; } else { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; Tcl_DecrRefCount(incrPtr); goto checkForCatch; } case INST_INCR_SCALAR1_IMM: opnd = TclGetUInt1AtPtr(pc+1); i = TclGetInt1AtPtr(pc+2); pcAdjustment = 3; cleanup = 0; varPtr = &(compiledLocals[opnd]); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } if (TclIsVarDirectModifyable(varPtr)) { ClientData ptr; int type; objPtr = varPtr->value.objPtr; if (GetNumberFromObj(NULL, objPtr, &ptr, &type) == TCL_OK) { if (type == TCL_NUMBER_LONG) { long augend = *((const long *)ptr); long sum = augend + i; /* * Overflow when (augend and sum have different sign) and * (augend and i have the same sign). This is encapsulated * in the Overflowing macro. */ if (!Overflowing(augend, i, sum)) { TRACE(("%u %ld => ", opnd, i)); if (Tcl_IsShared(objPtr)) { objPtr->refCount--; /* We know it's shared. */ TclNewLongObj(objResultPtr, sum); Tcl_IncrRefCount(objResultPtr); varPtr->value.objPtr = objResultPtr; } else { objResultPtr = objPtr; TclSetLongObj(objPtr, sum); } goto doneIncr; } #ifndef NO_WIDE_TYPE { w = (Tcl_WideInt)augend; TRACE(("%u %ld => ", opnd, i)); if (Tcl_IsShared(objPtr)) { objPtr->refCount--; /* We know it's shared. */ objResultPtr = Tcl_NewWideIntObj(w+i); Tcl_IncrRefCount(objResultPtr); varPtr->value.objPtr = objResultPtr; } else { objResultPtr = objPtr; /* * We know the sum value is outside the long * range; use macro form that doesn't range test * again. */ TclSetWideIntObj(objPtr, w+i); } goto doneIncr; } #endif } /* end if (type == TCL_NUMBER_LONG) */ #ifndef NO_WIDE_TYPE if (type == TCL_NUMBER_WIDE) { Tcl_WideInt sum; w = *((const Tcl_WideInt *)ptr); sum = w + i; /* * Check for overflow. */ if (!Overflowing(w, i, sum)) { TRACE(("%u %ld => ", opnd, i)); if (Tcl_IsShared(objPtr)) { objPtr->refCount--; /* We know it's shared. */ objResultPtr = Tcl_NewWideIntObj(sum); Tcl_IncrRefCount(objResultPtr); varPtr->value.objPtr = objResultPtr; } else { objResultPtr = objPtr; /* * We *do not* know the sum value is outside the * long range (wide + long can yield long); use * the function call that checks range. */ Tcl_SetWideIntObj(objPtr, sum); } goto doneIncr; } } #endif } if (Tcl_IsShared(objPtr)) { objPtr->refCount--; /* We know it's shared */ objResultPtr = Tcl_DuplicateObj(objPtr); Tcl_IncrRefCount(objResultPtr); varPtr->value.objPtr = objResultPtr; } else { objResultPtr = objPtr; } TclNewLongObj(incrPtr, i); result = TclIncrObj(interp, objResultPtr, incrPtr); Tcl_DecrRefCount(incrPtr); if (result == TCL_OK) { goto doneIncr; } else { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); goto checkForCatch; } } /* * All other cases, flow through to generic handling. */ TclNewLongObj(incrPtr, i); Tcl_IncrRefCount(incrPtr); doIncrScalar: varPtr = &(compiledLocals[opnd]); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } arrayPtr = NULL; part1Ptr = part2Ptr = NULL; cleanup = 0; TRACE(("%u %ld => ", opnd, i)); doIncrVar: if (TclIsVarDirectModifyable2(varPtr, arrayPtr)) { objPtr = varPtr->value.objPtr; if (Tcl_IsShared(objPtr)) { objPtr->refCount--; /* We know it's shared */ objResultPtr = Tcl_DuplicateObj(objPtr); Tcl_IncrRefCount(objResultPtr); varPtr->value.objPtr = objResultPtr; } else { objResultPtr = objPtr; } result = TclIncrObj(interp, objResultPtr, incrPtr); Tcl_DecrRefCount(incrPtr); if (result == TCL_OK) { goto doneIncr; } else { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); goto checkForCatch; } } else { DECACHE_STACK_INFO(); objResultPtr = TclPtrIncrObjVar(interp, varPtr, arrayPtr, part1Ptr, part2Ptr, incrPtr, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); Tcl_DecrRefCount(incrPtr); if (objResultPtr == NULL) { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; goto checkForCatch; } } doneIncr: TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); #ifndef TCL_COMPILE_DEBUG if (*(pc+pcAdjustment) == INST_POP) { NEXT_INST_V((pcAdjustment+1), cleanup, 0); } #endif NEXT_INST_V(pcAdjustment, cleanup, 1); } /* * End of INST_INCR instructions. * --------------------------------------------------------- */ /* * --------------------------------------------------------- * Start of INST_EXIST instructions. */ { Tcl_Obj *part1Ptr, *part2Ptr; Var *varPtr, *arrayPtr; case INST_EXIST_SCALAR: { int opnd = TclGetUInt4AtPtr(pc+1); varPtr = &(compiledLocals[opnd]); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u => ", opnd)); if (ReadTraced(varPtr)) { DECACHE_STACK_INFO(); TclObjCallVarTraces(iPtr, NULL, varPtr, NULL, NULL, TCL_TRACE_READS, 0, opnd); CACHE_STACK_INFO(); if (TclIsVarUndefined(varPtr)) { TclCleanupVar(varPtr, NULL); varPtr = NULL; } } /* * Tricky! Arrays always exist. */ objResultPtr = constants[!varPtr || TclIsVarUndefined(varPtr) ? 0 : 1]; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(5, 0, 1); } case INST_EXIST_ARRAY: { int opnd = TclGetUInt4AtPtr(pc+1); part2Ptr = OBJ_AT_TOS; arrayPtr = &(compiledLocals[opnd]); while (TclIsVarLink(arrayPtr)) { arrayPtr = arrayPtr->value.linkPtr; } TRACE(("%u \"%.30s\" => ", opnd, O2S(part2Ptr))); if (TclIsVarArray(arrayPtr) && !ReadTraced(arrayPtr)) { varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr); if (!varPtr || !ReadTraced(varPtr)) { goto doneExistArray; } } varPtr = TclLookupArrayElement(interp, NULL, part2Ptr, 0, "access", 0, 1, arrayPtr, opnd); if (varPtr) { if (ReadTraced(varPtr) || (arrayPtr && ReadTraced(arrayPtr))) { DECACHE_STACK_INFO(); TclObjCallVarTraces(iPtr, arrayPtr, varPtr, NULL, part2Ptr, TCL_TRACE_READS, 0, opnd); CACHE_STACK_INFO(); } if (TclIsVarUndefined(varPtr)) { TclCleanupVar(varPtr, arrayPtr); varPtr = NULL; } } doneExistArray: objResultPtr = constants[!varPtr || TclIsVarUndefined(varPtr) ? 0 : 1]; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(5, 1, 1); } case INST_EXIST_ARRAY_STK: cleanup = 2; part2Ptr = OBJ_AT_TOS; /* element name */ part1Ptr = OBJ_UNDER_TOS; /* array name */ TRACE(("\"%.30s(%.30s)\" => ", O2S(part1Ptr), O2S(part2Ptr))); goto doExistStk; case INST_EXIST_STK: cleanup = 1; part2Ptr = NULL; part1Ptr = OBJ_AT_TOS; /* variable name */ TRACE(("\"%.30s\" => ", O2S(part1Ptr))); doExistStk: varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr, 0, "access", /*createPart1*/0, /*createPart2*/1, &arrayPtr); if (varPtr) { if (ReadTraced(varPtr) || (arrayPtr && ReadTraced(arrayPtr))) { DECACHE_STACK_INFO(); TclObjCallVarTraces(iPtr, arrayPtr, varPtr, part1Ptr,part2Ptr, TCL_TRACE_READS, 0, -1); CACHE_STACK_INFO(); } if (TclIsVarUndefined(varPtr)) { TclCleanupVar(varPtr, arrayPtr); varPtr = NULL; } } objResultPtr = constants[!varPtr || TclIsVarUndefined(varPtr) ? 0 : 1]; TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(1, cleanup, 1); } /* * End of INST_EXIST instructions. * --------------------------------------------------------- */ case INST_UPVAR: { int opnd; Var *varPtr, *otherPtr; TRACE_WITH_OBJ(("upvar "), OBJ_UNDER_TOS); { CallFrame *framePtr, *savedFramePtr; result = TclObjGetFrame(interp, OBJ_UNDER_TOS, &framePtr); if (result != -1) { /* * Locate the other variable. */ savedFramePtr = iPtr->varFramePtr; iPtr->varFramePtr = framePtr; otherPtr = TclObjLookupVarEx(interp, OBJ_AT_TOS, NULL, (TCL_LEAVE_ERR_MSG), "access", /*createPart1*/ 1, /*createPart2*/ 1, &varPtr); iPtr->varFramePtr = savedFramePtr; if (otherPtr) { result = TCL_OK; goto doLinkVars; } } result = TCL_ERROR; goto checkForCatch; } case INST_VARIABLE: TRACE(("variable ")); otherPtr = TclObjLookupVarEx(interp, OBJ_AT_TOS, NULL, (TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "access", /*createPart1*/ 1, /*createPart2*/ 1, &varPtr); if (otherPtr) { /* * Do the [variable] magic. */ TclSetVarNamespaceVar(otherPtr); result = TCL_OK; goto doLinkVars; } result = TCL_ERROR; goto checkForCatch; case INST_NSUPVAR: TRACE_WITH_OBJ(("nsupvar "), OBJ_UNDER_TOS); { Tcl_Namespace *nsPtr, *savedNsPtr; result = TclGetNamespaceFromObj(interp, OBJ_UNDER_TOS, &nsPtr); if (result == TCL_OK) { /* * Locate the other variable. */ savedNsPtr = (Tcl_Namespace *) iPtr->varFramePtr->nsPtr; iPtr->varFramePtr->nsPtr = (Namespace *) nsPtr; otherPtr = TclObjLookupVarEx(interp, OBJ_AT_TOS, NULL, (TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "access", /*createPart1*/ 1, /*createPart2*/ 1, &varPtr); iPtr->varFramePtr->nsPtr = (Namespace *) savedNsPtr; if (otherPtr) { goto doLinkVars; } } result = TCL_ERROR; goto checkForCatch; } doLinkVars: /* * If we are here, the local variable has already been created: do the * little work of TclPtrMakeUpvar that remains to be done right here * if there are no errors; otherwise, let it handle the case. */ opnd = TclGetInt4AtPtr(pc+1);; varPtr = &(compiledLocals[opnd]); if ((varPtr != otherPtr) && !TclIsVarTraced(varPtr) && (TclIsVarUndefined(varPtr) || TclIsVarLink(varPtr))) { if (!TclIsVarUndefined(varPtr)) { /* * Then it is a defined link. */ Var *linkPtr = varPtr->value.linkPtr; if (linkPtr == otherPtr) { goto doLinkVarsDone; } if (TclIsVarInHash(linkPtr)) { VarHashRefCount(linkPtr)--; if (TclIsVarUndefined(linkPtr)) { TclCleanupVar(linkPtr, NULL); } } } TclSetVarLink(varPtr); varPtr->value.linkPtr = otherPtr; if (TclIsVarInHash(otherPtr)) { VarHashRefCount(otherPtr)++; } } else { result = TclPtrObjMakeUpvar(interp, otherPtr, NULL, 0, opnd); if (result != TCL_OK) { goto checkForCatch; } } /* * Do not pop the namespace or frame index, it may be needed for other * variables - and [variable] did not push it at all. */ doLinkVarsDone: NEXT_INST_F(5, 1, 0); } case INST_JUMP1: { int opnd = TclGetInt1AtPtr(pc+1); TRACE(("%d => new pc %u\n", opnd, (unsigned)(pc + opnd - codePtr->codeStart))); NEXT_INST_F(opnd, 0, 0); } case INST_JUMP4: { int opnd = TclGetInt4AtPtr(pc+1); TRACE(("%d => new pc %u\n", opnd, (unsigned)(pc + opnd - codePtr->codeStart))); NEXT_INST_F(opnd, 0, 0); } { int jmpOffset[2], b; Tcl_Obj *valuePtr; /* TODO: consider rewrite so we don't compute the offset we're not * going to take. */ case INST_JUMP_FALSE4: jmpOffset[0] = TclGetInt4AtPtr(pc+1); /* FALSE offset */ jmpOffset[1] = 5; /* TRUE offset*/ goto doCondJump; case INST_JUMP_TRUE4: jmpOffset[0] = 5; jmpOffset[1] = TclGetInt4AtPtr(pc+1); goto doCondJump; case INST_JUMP_FALSE1: jmpOffset[0] = TclGetInt1AtPtr(pc+1); jmpOffset[1] = 2; goto doCondJump; case INST_JUMP_TRUE1: jmpOffset[0] = 2; jmpOffset[1] = TclGetInt1AtPtr(pc+1); doCondJump: valuePtr = OBJ_AT_TOS; /* TODO - check claim that taking address of b harms performance */ /* TODO - consider optimization search for constants */ result = TclGetBooleanFromObj(interp, valuePtr, &b); if (result != TCL_OK) { TRACE_WITH_OBJ(("%d => ERROR: ", jmpOffset[ ((*pc == INST_JUMP_FALSE1) || (*pc == INST_JUMP_FALSE4)) ? 0 : 1]), Tcl_GetObjResult(interp)); goto checkForCatch; } #ifdef TCL_COMPILE_DEBUG if (b) { if ((*pc == INST_JUMP_TRUE1) || (*pc == INST_JUMP_TRUE4)) { TRACE(("%d => %.20s true, new pc %u\n", jmpOffset[1], O2S(valuePtr), (unsigned)(pc + jmpOffset[1] - codePtr->codeStart))); } else { TRACE(("%d => %.20s true\n", jmpOffset[0], O2S(valuePtr))); } } else { if ((*pc == INST_JUMP_TRUE1) || (*pc == INST_JUMP_TRUE4)) { TRACE(("%d => %.20s false\n", jmpOffset[0], O2S(valuePtr))); } else { TRACE(("%d => %.20s false, new pc %u\n", jmpOffset[0], O2S(valuePtr), (unsigned)(pc + jmpOffset[1] - codePtr->codeStart))); } } #endif NEXT_INST_F(jmpOffset[b], 1, 0); } case INST_JUMP_TABLE: { Tcl_HashEntry *hPtr; JumptableInfo *jtPtr; int opnd; /* * Jump to location looked up in a hashtable; fall through to next * instr if lookup fails. */ opnd = TclGetInt4AtPtr(pc+1); jtPtr = (JumptableInfo *) codePtr->auxDataArrayPtr[opnd].clientData; TRACE(("%d => %.20s ", opnd, O2S(OBJ_AT_TOS))); hPtr = Tcl_FindHashEntry(&jtPtr->hashTable, TclGetString(OBJ_AT_TOS)); if (hPtr != NULL) { int jumpOffset = PTR2INT(Tcl_GetHashValue(hPtr)); TRACE_APPEND(("found in table, new pc %u\n", (unsigned)(pc - codePtr->codeStart + jumpOffset))); NEXT_INST_F(jumpOffset, 1, 0); } else { TRACE_APPEND(("not found in table\n")); NEXT_INST_F(5, 1, 0); } } /* * These two instructions are now redundant: the complete logic of the LOR * and LAND is now handled by the expression compiler. */ case INST_LOR: case INST_LAND: { /* * Operands must be boolean or numeric. No int->double conversions are * performed. */ int i1, i2, iResult; Tcl_Obj *value2Ptr = OBJ_AT_TOS; Tcl_Obj *valuePtr = OBJ_UNDER_TOS; result = TclGetBooleanFromObj(NULL, valuePtr, &i1); if (result != TCL_OK) { TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr), (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); IllegalExprOperandType(interp, pc, valuePtr); goto checkForCatch; } result = TclGetBooleanFromObj(NULL, value2Ptr, &i2); if (result != TCL_OK) { TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(value2Ptr), (value2Ptr->typePtr? value2Ptr->typePtr->name : "null"))); IllegalExprOperandType(interp, pc, value2Ptr); goto checkForCatch; } if (*pc == INST_LOR) { iResult = (i1 || i2); } else { iResult = (i1 && i2); } objResultPtr = constants[iResult]; TRACE(("%.20s %.20s => %d\n", O2S(valuePtr),O2S(value2Ptr),iResult)); NEXT_INST_F(1, 2, 1); } /* * --------------------------------------------------------- * Start of INST_LIST and related instructions. */ case INST_LIST: { /* * Pop the opnd (objc) top stack elements into a new list obj and then * decrement their ref counts. */ int opnd; opnd = TclGetUInt4AtPtr(pc+1); objResultPtr = Tcl_NewListObj(opnd, &OBJ_AT_DEPTH(opnd-1)); TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr); NEXT_INST_V(5, opnd, 1); } case INST_LIST_LENGTH: { Tcl_Obj *valuePtr; int length; valuePtr = OBJ_AT_TOS; result = TclListObjLength(interp, valuePtr, &length); if (result == TCL_OK) { TclNewIntObj(objResultPtr, length); TRACE(("%.20s => %d\n", O2S(valuePtr), length)); NEXT_INST_F(1, 1, 1); } else { TRACE_WITH_OBJ(("%.30s => ERROR: ", O2S(valuePtr)), Tcl_GetObjResult(interp)); goto checkForCatch; } } case INST_LIST_INDEX: { /*** lindex with objc == 3 ***/ /* Variables also for INST_LIST_INDEX_IMM */ int listc, idx, opnd, pcAdjustment; Tcl_Obj **listv; Tcl_Obj *valuePtr, *value2Ptr; /* * Pop the two operands. */ value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; /* * Extract the desired list element. */ result = TclListObjGetElements(interp, valuePtr, &listc, &listv); if ((result == TCL_OK) && (value2Ptr->typePtr != &tclListType) && (TclGetIntForIndexM(NULL , value2Ptr, listc-1, &idx) == TCL_OK)) { TclDecrRefCount(value2Ptr); tosPtr--; pcAdjustment = 1; goto lindexFastPath; } objResultPtr = TclLindexList(interp, valuePtr, value2Ptr); if (objResultPtr) { /* * Stash the list element on the stack. */ TRACE(("%.20s %.20s => %s\n", O2S(valuePtr), O2S(value2Ptr), O2S(objResultPtr))); NEXT_INST_F(1, 2, -1); /* Already has the correct refCount */ } else { TRACE_WITH_OBJ(("%.30s %.30s => ERROR: ", O2S(valuePtr), O2S(value2Ptr)), Tcl_GetObjResult(interp)); result = TCL_ERROR; goto checkForCatch; } case INST_LIST_INDEX_IMM: /*** lindex with objc==3 and index in bytecode stream ***/ pcAdjustment = 5; /* * Pop the list and get the index. */ valuePtr = OBJ_AT_TOS; opnd = TclGetInt4AtPtr(pc+1); /* * Get the contents of the list, making sure that it really is a list * in the process. */ result = TclListObjGetElements(interp, valuePtr, &listc, &listv); if (result == TCL_OK) { /* * Select the list item based on the index. Negative operand means * end-based indexing. */ if (opnd < -1) { idx = opnd+1 + listc; } else { idx = opnd; } lindexFastPath: if (idx >= 0 && idx < listc) { objResultPtr = listv[idx]; } else { TclNewObj(objResultPtr); } TRACE_WITH_OBJ(("\"%.30s\" %d => ", O2S(valuePtr), opnd), objResultPtr); NEXT_INST_F(pcAdjustment, 1, 1); } else { TRACE_WITH_OBJ(("\"%.30s\" %d => ERROR: ", O2S(valuePtr), opnd), Tcl_GetObjResult(interp)); goto checkForCatch; } } case INST_LIST_INDEX_MULTI: { /* * 'lindex' with multiple index args: * * Determine the count of index args. */ int numIdx, opnd; opnd = TclGetUInt4AtPtr(pc+1); numIdx = opnd-1; /* * Do the 'lindex' operation. */ objResultPtr = TclLindexFlat(interp, OBJ_AT_DEPTH(numIdx), numIdx, &OBJ_AT_DEPTH(numIdx - 1)); /* * Check for errors. */ if (objResultPtr) { /* * Set result. */ TRACE(("%d => %s\n", opnd, O2S(objResultPtr))); NEXT_INST_V(5, opnd, -1); } else { TRACE_WITH_OBJ(("%d => ERROR: ", opnd), Tcl_GetObjResult(interp)); result = TCL_ERROR; goto checkForCatch; } } case INST_LSET_FLAT: { /* * Lset with 3, 5, or more args. Get the number of index args. */ int numIdx,opnd; Tcl_Obj *valuePtr, *value2Ptr; opnd = TclGetUInt4AtPtr(pc + 1); numIdx = opnd - 2; /* * Get the old value of variable, and remove the stack ref. This is * safe because the variable still references the object; the ref * count will never go zero here - we can use the smaller macro * Tcl_DecrRefCount. */ value2Ptr = POP_OBJECT(); Tcl_DecrRefCount(value2Ptr); /* This one should be done here */ /* * Get the new element value. */ valuePtr = OBJ_AT_TOS; /* * Compute the new variable value. */ objResultPtr = TclLsetFlat(interp, value2Ptr, numIdx, &OBJ_AT_DEPTH(numIdx), valuePtr); /* * Check for errors. */ if (objResultPtr) { /* * Set result. */ TRACE(("%d => %s\n", opnd, O2S(objResultPtr))); NEXT_INST_V(5, (numIdx+1), -1); } else { TRACE_WITH_OBJ(("%d => ERROR: ", opnd), Tcl_GetObjResult(interp)); result = TCL_ERROR; goto checkForCatch; } } case INST_LSET_LIST: { /* * 'lset' with 4 args. */ Tcl_Obj *objPtr, *valuePtr, *value2Ptr; /* * Get the old value of variable, and remove the stack ref. This is * safe because the variable still references the object; the ref * count will never go zero here - we can use the smaller macro * Tcl_DecrRefCount. */ objPtr = POP_OBJECT(); Tcl_DecrRefCount(objPtr); /* This one should be done here. */ /* * Get the new element value, and the index list. */ valuePtr = OBJ_AT_TOS; value2Ptr = OBJ_UNDER_TOS; /* * Compute the new variable value. */ objResultPtr = TclLsetList(interp, objPtr, value2Ptr, valuePtr); /* * Check for errors. */ if (objResultPtr) { /* * Set result. */ TRACE(("=> %s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, -1); } else { TRACE_WITH_OBJ(("\"%.30s\" => ERROR: ", O2S(value2Ptr)), Tcl_GetObjResult(interp)); result = TCL_ERROR; goto checkForCatch; } } case INST_LIST_RANGE_IMM: { /*** lrange with objc==4 and both indices in bytecode stream ***/ int listc, fromIdx, toIdx; Tcl_Obj **listv, *valuePtr; /* * Pop the list and get the indices. */ valuePtr = OBJ_AT_TOS; fromIdx = TclGetInt4AtPtr(pc+1); toIdx = TclGetInt4AtPtr(pc+5); /* * Get the contents of the list, making sure that it really is a list * in the process. */ result = TclListObjGetElements(interp, valuePtr, &listc, &listv); /* * Skip a lot of work if we're about to throw the result away (common * with uses of [lassign]). */ if (result == TCL_OK) { #ifndef TCL_COMPILE_DEBUG if (*(pc+9) == INST_POP) { NEXT_INST_F(10, 1, 0); } #endif } else { TRACE_WITH_OBJ(("\"%.30s\" %d %d => ERROR: ", O2S(valuePtr), fromIdx, toIdx), Tcl_GetObjResult(interp)); goto checkForCatch; } /* * Adjust the indices for end-based handling. */ if (fromIdx < -1) { fromIdx += 1+listc; if (fromIdx < -1) { fromIdx = -1; } } else if (fromIdx > listc) { fromIdx = listc; } if (toIdx < -1) { toIdx += 1+listc; if (toIdx < -1) { toIdx = -1; } } else if (toIdx > listc) { toIdx = listc; } /* * Check if we are referring to a valid, non-empty list range, and if * so, build the list of elements in that range. */ if (fromIdx<=toIdx && fromIdx<listc && toIdx>=0) { if (fromIdx<0) { fromIdx = 0; } if (toIdx >= listc) { toIdx = listc-1; } objResultPtr = Tcl_NewListObj(toIdx-fromIdx+1, listv+fromIdx); } else { TclNewObj(objResultPtr); } TRACE_WITH_OBJ(("\"%.30s\" %d %d => ", O2S(valuePtr), TclGetInt4AtPtr(pc+1), TclGetInt4AtPtr(pc+5)), objResultPtr); NEXT_INST_F(9, 1, 1); } case INST_LIST_IN: case INST_LIST_NOT_IN: { /* * Basic list containment operators. */ int found, s1len, s2len, llen, i; Tcl_Obj *valuePtr, *value2Ptr, *o; char *s1; const char *s2; value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; /* TODO: Consider more efficient tests than strcmp() */ s1 = TclGetStringFromObj(valuePtr, &s1len); result = TclListObjLength(interp, value2Ptr, &llen); if (result != TCL_OK) { TRACE_WITH_OBJ(("\"%.30s\" \"%.30s\" => ERROR: ", O2S(valuePtr), O2S(value2Ptr)), Tcl_GetObjResult(interp)); goto checkForCatch; } found = 0; if (llen > 0) { /* * An empty list doesn't match anything. */ i = 0; do { Tcl_ListObjIndex(NULL, value2Ptr, i, &o); if (o != NULL) { s2 = TclGetStringFromObj(o, &s2len); } else { s2 = ""; } if (s1len == s2len) { found = (strcmp(s1, s2) == 0); } i++; } while (i < llen && found == 0); } if (*pc == INST_LIST_NOT_IN) { found = !found; } TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), found)); /* * Peep-hole optimisation: if you're about to jump, do jump from here. * We're saving the effort of pushing a boolean value only to pop it * for branching. */ pc++; #ifndef TCL_COMPILE_DEBUG switch (*pc) { case INST_JUMP_FALSE1: NEXT_INST_F((found ? 2 : TclGetInt1AtPtr(pc+1)), 2, 0); case INST_JUMP_TRUE1: NEXT_INST_F((found ? TclGetInt1AtPtr(pc+1) : 2), 2, 0); case INST_JUMP_FALSE4: NEXT_INST_F((found ? 5 : TclGetInt4AtPtr(pc+1)), 2, 0); case INST_JUMP_TRUE4: NEXT_INST_F((found ? TclGetInt4AtPtr(pc+1) : 5), 2, 0); } #endif objResultPtr = constants[found]; NEXT_INST_F(0, 2, 1); } /* * End of INST_LIST and related instructions. * --------------------------------------------------------- */ case INST_STR_EQ: case INST_STR_NEQ: { /* * String (in)equality check * TODO: Consider merging into INST_STR_CMP */ int iResult; Tcl_Obj *valuePtr, *value2Ptr; value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; if (valuePtr == value2Ptr) { /* * On the off-chance that the objects are the same, we don't * really have to think hard about equality. */ iResult = (*pc == INST_STR_EQ); } else { char *s1, *s2; int s1len, s2len; s1 = TclGetStringFromObj(valuePtr, &s1len); s2 = TclGetStringFromObj(value2Ptr, &s2len); if (s1len == s2len) { /* * We only need to check (in)equality when we have equal * length strings. */ if (*pc == INST_STR_NEQ) { iResult = (strcmp(s1, s2) != 0); } else { /* INST_STR_EQ */ iResult = (strcmp(s1, s2) == 0); } } else { iResult = (*pc == INST_STR_NEQ); } } TRACE(("%.20s %.20s => %d\n", O2S(valuePtr),O2S(value2Ptr),iResult)); /* * Peep-hole optimisation: if you're about to jump, do jump from here. */ pc++; #ifndef TCL_COMPILE_DEBUG switch (*pc) { case INST_JUMP_FALSE1: NEXT_INST_F((iResult? 2 : TclGetInt1AtPtr(pc+1)), 2, 0); case INST_JUMP_TRUE1: NEXT_INST_F((iResult? TclGetInt1AtPtr(pc+1) : 2), 2, 0); case INST_JUMP_FALSE4: NEXT_INST_F((iResult? 5 : TclGetInt4AtPtr(pc+1)), 2, 0); case INST_JUMP_TRUE4: NEXT_INST_F((iResult? TclGetInt4AtPtr(pc+1) : 5), 2, 0); } #endif objResultPtr = constants[iResult]; NEXT_INST_F(0, 2, 1); } case INST_STR_CMP: { /* * String compare. */ const char *s1, *s2; int s1len, s2len, iResult; Tcl_Obj *valuePtr, *value2Ptr; stringCompare: value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; /* * The comparison function should compare up to the minimum byte * length only. */ if (valuePtr == value2Ptr) { /* * In the pure equality case, set lengths too for the checks below * (or we could goto beyond it). */ iResult = s1len = s2len = 0; } else if ((valuePtr->typePtr == &tclByteArrayType) && (value2Ptr->typePtr == &tclByteArrayType)) { s1 = (char *) Tcl_GetByteArrayFromObj(valuePtr, &s1len); s2 = (char *) Tcl_GetByteArrayFromObj(value2Ptr, &s2len); iResult = memcmp(s1, s2, (size_t) ((s1len < s2len) ? s1len : s2len)); } else if (((valuePtr->typePtr == &tclStringType) && (value2Ptr->typePtr == &tclStringType))) { /* * Do a unicode-specific comparison if both of the args are of * String type. If the char length == byte length, we can do a * memcmp. In benchmark testing this proved the most efficient * check between the unicode and string comparison operations. */ s1len = Tcl_GetCharLength(valuePtr); s2len = Tcl_GetCharLength(value2Ptr); if ((s1len == valuePtr->length) && (s2len == value2Ptr->length)) { iResult = memcmp(valuePtr->bytes, value2Ptr->bytes, (unsigned) ((s1len < s2len) ? s1len : s2len)); } else { iResult = TclUniCharNcmp(Tcl_GetUnicode(valuePtr), Tcl_GetUnicode(value2Ptr), (unsigned) ((s1len < s2len) ? s1len : s2len)); } } else { /* * We can't do a simple memcmp in order to handle the special Tcl * \xC0\x80 null encoding for utf-8. */ s1 = TclGetStringFromObj(valuePtr, &s1len); s2 = TclGetStringFromObj(value2Ptr, &s2len); iResult = TclpUtfNcmp2(s1, s2, (size_t) ((s1len < s2len) ? s1len : s2len)); } /* * Make sure only -1,0,1 is returned * TODO: consider peephole opt. */ if (iResult == 0) { iResult = s1len - s2len; } if (*pc != INST_STR_CMP) { /* * Take care of the opcodes that goto'ed into here. */ switch (*pc) { case INST_EQ: iResult = (iResult == 0); break; case INST_NEQ: iResult = (iResult != 0); break; case INST_LT: iResult = (iResult < 0); break; case INST_GT: iResult = (iResult > 0); break; case INST_LE: iResult = (iResult <= 0); break; case INST_GE: iResult = (iResult >= 0); break; } } if (iResult < 0) { TclNewIntObj(objResultPtr, -1); TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), -1)); } else { objResultPtr = constants[(iResult>0)]; TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), (iResult > 0))); } NEXT_INST_F(1, 2, 1); } case INST_STR_LEN: { int length; Tcl_Obj *valuePtr; valuePtr = OBJ_AT_TOS; if (valuePtr->typePtr == &tclByteArrayType) { (void) Tcl_GetByteArrayFromObj(valuePtr, &length); } else { length = Tcl_GetCharLength(valuePtr); } TclNewIntObj(objResultPtr, length); TRACE(("%.20s => %d\n", O2S(valuePtr), length)); NEXT_INST_F(1, 1, 1); } case INST_STR_INDEX: { /* * String compare. */ int index, length; char *bytes; Tcl_Obj *valuePtr, *value2Ptr; bytes = NULL; /* lint */ value2Ptr = OBJ_AT_TOS; valuePtr = OBJ_UNDER_TOS; /* * If we have a ByteArray object, avoid indexing in the Utf string * since the byte array contains one byte per character. Otherwise, * use the Unicode string rep to get the index'th char. */ if (valuePtr->typePtr == &tclByteArrayType) { bytes = (char *)Tcl_GetByteArrayFromObj(valuePtr, &length); } else { /* * Get Unicode char length to calulate what 'end' means. */ length = Tcl_GetCharLength(valuePtr); } result = TclGetIntForIndexM(interp, value2Ptr, length - 1, &index); if (result != TCL_OK) { goto checkForCatch; } if ((index >= 0) && (index < length)) { if (valuePtr->typePtr == &tclByteArrayType) { objResultPtr = Tcl_NewByteArrayObj((unsigned char *) (&bytes[index]), 1); } else if (valuePtr->bytes && length == valuePtr->length) { objResultPtr = Tcl_NewStringObj((const char *) (&valuePtr->bytes[index]), 1); } else { char buf[TCL_UTF_MAX]; Tcl_UniChar ch; ch = Tcl_GetUniChar(valuePtr, index); /* * This could be: Tcl_NewUnicodeObj((const Tcl_UniChar *)&ch, * 1) but creating the object as a string seems to be faster * in practical use. */ length = Tcl_UniCharToUtf(ch, buf); objResultPtr = Tcl_NewStringObj(buf, length); } } else { TclNewObj(objResultPtr); } TRACE(("%.20s %.20s => %s\n", O2S(valuePtr), O2S(value2Ptr), O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } case INST_STR_MATCH: { int nocase, match; Tcl_Obj *valuePtr, *value2Ptr; nocase = TclGetInt1AtPtr(pc+1); valuePtr = OBJ_AT_TOS; /* String */ value2Ptr = OBJ_UNDER_TOS; /* Pattern */ /* * Check that at least one of the objects is Unicode before promoting * both. */ if ((valuePtr->typePtr == &tclStringType) || (value2Ptr->typePtr == &tclStringType)) { Tcl_UniChar *ustring1, *ustring2; int length1, length2; ustring1 = Tcl_GetUnicodeFromObj(valuePtr, &length1); ustring2 = Tcl_GetUnicodeFromObj(value2Ptr, &length2); match = TclUniCharMatch(ustring1, length1, ustring2, length2, nocase); } else if ((valuePtr->typePtr == &tclByteArrayType) && !nocase) { unsigned char *string1, *string2; int length1, length2; string1 = Tcl_GetByteArrayFromObj(valuePtr, &length1); string2 = Tcl_GetByteArrayFromObj(value2Ptr, &length2); match = TclByteArrayMatch(string1, length1, string2, length2, 0); } else { match = Tcl_StringCaseMatch(TclGetString(valuePtr), TclGetString(value2Ptr), nocase); } /* * Reuse value2Ptr object already on stack if possible. Adjustment is * 2 due to the nocase byte * TODO: consider peephole opt. */ TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), match)); objResultPtr = constants[match]; NEXT_INST_F(2, 2, 1); } case INST_REGEXP: { int cflags, match; Tcl_Obj *valuePtr, *value2Ptr; Tcl_RegExp regExpr; cflags = TclGetInt1AtPtr(pc+1); /* RE compile flages like NOCASE */ valuePtr = OBJ_AT_TOS; /* String */ value2Ptr = OBJ_UNDER_TOS; /* Pattern */ regExpr = Tcl_GetRegExpFromObj(interp, value2Ptr, cflags); if (regExpr == NULL) { match = -1; } else { match = Tcl_RegExpExecObj(interp, regExpr, valuePtr, 0, 0, 0); } /* * Adjustment is 2 due to the nocase byte */ if (match < 0) { objResultPtr = Tcl_GetObjResult(interp); TRACE_WITH_OBJ(("%.20s %.20s => ERROR: ", O2S(valuePtr), O2S(value2Ptr)), objResultPtr); result = TCL_ERROR; goto checkForCatch; } else { TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), match)); objResultPtr = constants[match]; NEXT_INST_F(2, 2, 1); } } case INST_EQ: case INST_NEQ: case INST_LT: case INST_GT: case INST_LE: case INST_GE: { Tcl_Obj *valuePtr = OBJ_UNDER_TOS; Tcl_Obj *value2Ptr = OBJ_AT_TOS; ClientData ptr1, ptr2; int iResult = 0, compare = 0, type1, type2; double d1, d2, tmp; long l1, l2; mp_int big1, big2; #ifndef NO_WIDE_TYPE Tcl_WideInt w1, w2; #endif if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) { /* * At least one non-numeric argument - compare as strings. */ goto stringCompare; } if (type1 == TCL_NUMBER_NAN) { /* * NaN first arg: NaN != to everything, other compares are false. */ iResult = (*pc == INST_NEQ); goto foundResult; } if (valuePtr == value2Ptr) { compare = MP_EQ; goto convertComparison; } if (GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2) != TCL_OK) { /* * At least one non-numeric argument - compare as strings. */ goto stringCompare; } if (type2 == TCL_NUMBER_NAN) { /* * NaN 2nd arg: NaN != to everything, other compares are false. */ iResult = (*pc == INST_NEQ); goto foundResult; } switch (type1) { case TCL_NUMBER_LONG: l1 = *((const long *)ptr1); switch (type2) { case TCL_NUMBER_LONG: l2 = *((const long *)ptr2); longCompare: compare = (l1 < l2) ? MP_LT : ((l1 > l2) ? MP_GT : MP_EQ); break; #ifndef NO_WIDE_TYPE case TCL_NUMBER_WIDE: w2 = *((const Tcl_WideInt *)ptr2); w1 = (Tcl_WideInt)l1; goto wideCompare; #endif case TCL_NUMBER_DOUBLE: d2 = *((const double *)ptr2); d1 = (double) l1; /* * If the double has a fractional part, or if the long can be * converted to double without loss of precision, then compare * as doubles. */ if (DBL_MANT_DIG > CHAR_BIT*sizeof(long) || l1 == (long) d1 || modf(d2, &tmp) != 0.0) { goto doubleCompare; } /* * Otherwise, to make comparision based on full precision, * need to convert the double to a suitably sized integer. * * Need this to get comparsions like * expr 20000000000000003 < 20000000000000004.0 * right. Converting the first argument to double will yield * two double values that are equivalent within double * precision. Converting the double to an integer gets done * exactly, then integer comparison can tell the difference. */ if (d2 < (double)LONG_MIN) { compare = MP_GT; break; } if (d2 > (double)LONG_MAX) { compare = MP_LT; break; } l2 = (long) d2; goto longCompare; case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); if (mp_cmp_d(&big2, 0) == MP_LT) { compare = MP_GT; } else { compare = MP_LT; } mp_clear(&big2); } break; #ifndef NO_WIDE_TYPE case TCL_NUMBER_WIDE: w1 = *((const Tcl_WideInt *)ptr1); switch (type2) { case TCL_NUMBER_WIDE: w2 = *((const Tcl_WideInt *)ptr2); wideCompare: compare = (w1 < w2) ? MP_LT : ((w1 > w2) ? MP_GT : MP_EQ); break; case TCL_NUMBER_LONG: l2 = *((const long *)ptr2); w2 = (Tcl_WideInt)l2; goto wideCompare; case TCL_NUMBER_DOUBLE: d2 = *((const double *)ptr2); d1 = (double) w1; if (DBL_MANT_DIG > CHAR_BIT*sizeof(Tcl_WideInt) || w1 == (Tcl_WideInt) d1 || modf(d2, &tmp) != 0.0) { goto doubleCompare; } if (d2 < (double)LLONG_MIN) { compare = MP_GT; break; } if (d2 > (double)LLONG_MAX) { compare = MP_LT; break; } w2 = (Tcl_WideInt) d2; goto wideCompare; case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); if (mp_cmp_d(&big2, 0) == MP_LT) { compare = MP_GT; } else { compare = MP_LT; } mp_clear(&big2); } break; #endif case TCL_NUMBER_DOUBLE: d1 = *((const double *)ptr1); switch (type2) { case TCL_NUMBER_DOUBLE: d2 = *((const double *)ptr2); doubleCompare: compare = (d1 < d2) ? MP_LT : ((d1 > d2) ? MP_GT : MP_EQ); break; case TCL_NUMBER_LONG: l2 = *((const long *)ptr2); d2 = (double) l2; if (DBL_MANT_DIG > CHAR_BIT*sizeof(long) || l2 == (long) d2 || modf(d1, &tmp) != 0.0) { goto doubleCompare; } if (d1 < (double)LONG_MIN) { compare = MP_LT; break; } if (d1 > (double)LONG_MAX) { compare = MP_GT; break; } l1 = (long) d1; goto longCompare; #ifndef NO_WIDE_TYPE case TCL_NUMBER_WIDE: w2 = *((const Tcl_WideInt *)ptr2); d2 = (double) w2; if (DBL_MANT_DIG > CHAR_BIT*sizeof(Tcl_WideInt) || w2 == (Tcl_WideInt) d2 || modf(d1, &tmp) != 0.0) { goto doubleCompare; } if (d1 < (double)LLONG_MIN) { compare = MP_LT; break; } if (d1 > (double)LLONG_MAX) { compare = MP_GT; break; } w1 = (Tcl_WideInt) d1; goto wideCompare; #endif case TCL_NUMBER_BIG: if (TclIsInfinite(d1)) { compare = (d1 > 0.0) ? MP_GT : MP_LT; break; } Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); if ((d1 < (double)LONG_MAX) && (d1 > (double)LONG_MIN)) { if (mp_cmp_d(&big2, 0) == MP_LT) { compare = MP_GT; } else { compare = MP_LT; } mp_clear(&big2); break; } if (DBL_MANT_DIG > CHAR_BIT*sizeof(long) && modf(d1, &tmp) != 0.0) { d2 = TclBignumToDouble(&big2); mp_clear(&big2); goto doubleCompare; } Tcl_InitBignumFromDouble(NULL, d1, &big1); goto bigCompare; } break; case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); switch (type2) { #ifndef NO_WIDE_TYPE case TCL_NUMBER_WIDE: #endif case TCL_NUMBER_LONG: compare = mp_cmp_d(&big1, 0); mp_clear(&big1); break; case TCL_NUMBER_DOUBLE: d2 = *((const double *)ptr2); if (TclIsInfinite(d2)) { compare = (d2 > 0.0) ? MP_LT : MP_GT; mp_clear(&big1); break; } if ((d2 < (double)LONG_MAX) && (d2 > (double)LONG_MIN)) { compare = mp_cmp_d(&big1, 0); mp_clear(&big1); break; } if (DBL_MANT_DIG > CHAR_BIT*sizeof(long) && modf(d2, &tmp) != 0.0) { d1 = TclBignumToDouble(&big1); mp_clear(&big1); goto doubleCompare; } Tcl_InitBignumFromDouble(NULL, d2, &big2); goto bigCompare; case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); bigCompare: compare = mp_cmp(&big1, &big2); mp_clear(&big1); mp_clear(&big2); } } /* * Turn comparison outcome into appropriate result for opcode. */ convertComparison: switch (*pc) { case INST_EQ: iResult = (compare == MP_EQ); break; case INST_NEQ: iResult = (compare != MP_EQ); break; case INST_LT: iResult = (compare == MP_LT); break; case INST_GT: iResult = (compare == MP_GT); break; case INST_LE: iResult = (compare != MP_GT); break; case INST_GE: iResult = (compare != MP_LT); break; } /* * Peep-hole optimisation: if you're about to jump, do jump from here. */ foundResult: pc++; #ifndef TCL_COMPILE_DEBUG switch (*pc) { case INST_JUMP_FALSE1: NEXT_INST_F((iResult? 2 : TclGetInt1AtPtr(pc+1)), 2, 0); case INST_JUMP_TRUE1: NEXT_INST_F((iResult? TclGetInt1AtPtr(pc+1) : 2), 2, 0); case INST_JUMP_FALSE4: NEXT_INST_F((iResult? 5 : TclGetInt4AtPtr(pc+1)), 2, 0); case INST_JUMP_TRUE4: NEXT_INST_F((iResult? TclGetInt4AtPtr(pc+1) : 5), 2, 0); } #endif objResultPtr = constants[iResult]; NEXT_INST_F(0, 2, 1); } case INST_MOD: case INST_LSHIFT: case INST_RSHIFT: { Tcl_Obj *value2Ptr = OBJ_AT_TOS; Tcl_Obj *valuePtr = OBJ_UNDER_TOS; ClientData ptr1, ptr2; int invalid, shift, type1, type2; long l1 = 0; result = GetNumberFromObj(NULL, valuePtr, &ptr1, &type1); if ((result != TCL_OK) || (type1 == TCL_NUMBER_DOUBLE) || (type1 == TCL_NUMBER_NAN)) { result = TCL_ERROR; TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n", O2S(valuePtr), O2S(value2Ptr), (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); IllegalExprOperandType(interp, pc, valuePtr); goto checkForCatch; } result = GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2); if ((result != TCL_OK) || (type2 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_NAN)) { result = TCL_ERROR; TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n", O2S(valuePtr), O2S(value2Ptr), (value2Ptr->typePtr? value2Ptr->typePtr->name : "null"))); IllegalExprOperandType(interp, pc, value2Ptr); goto checkForCatch; } if (*pc == INST_MOD) { /* TODO: Attempts to re-use unshared operands on stack */ long l2 = 0; /* silence gcc warning */ if (type2 == TCL_NUMBER_LONG) { l2 = *((const long *)ptr2); if (l2 == 0) { TRACE(("%s %s => DIVIDE BY ZERO\n", O2S(valuePtr), O2S(value2Ptr))); goto divideByZero; } if ((l2 == 1) || (l2 == -1)) { /* * Div. by |1| always yields remainder of 0. */ objResultPtr = constants[0]; TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } } if (type1 == TCL_NUMBER_LONG) { l1 = *((const long *)ptr1); if (l1 == 0) { /* * 0 % (non-zero) always yields remainder of 0. */ objResultPtr = constants[0]; TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } if (type2 == TCL_NUMBER_LONG) { /* * Both operands are long; do native calculation. */ long lRemainder, lQuotient = l1 / l2; /* * Force Tcl's integer division rules. * TODO: examine for logic simplification */ if ((lQuotient < 0 || (lQuotient == 0 && ((l1 < 0 && l2 > 0) || (l1 > 0 && l2 < 0)))) && (lQuotient * l2 != l1)) { lQuotient -= 1; } lRemainder = l1 - l2*lQuotient; TclNewLongObj(objResultPtr, lRemainder); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } /* * First operand fits in long; second does not, so the second * has greater magnitude than first. No need to divide to * determine the remainder. */ #ifndef NO_WIDE_TYPE if (type2 == TCL_NUMBER_WIDE) { Tcl_WideInt w2 = *((const Tcl_WideInt *)ptr2); if ((l1 > 0) ^ (w2 > (Tcl_WideInt)0)) { /* * Arguments are opposite sign; remainder is sum. */ objResultPtr = Tcl_NewWideIntObj(w2+(Tcl_WideInt)l1); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } /* * Arguments are same sign; remainder is first operand. */ TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } #endif { mp_int big2; Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); /* TODO: internals intrusion */ if ((l1 > 0) ^ (big2.sign == MP_ZPOS)) { /* * Arguments are opposite sign; remainder is sum. */ mp_int big1; TclBNInitBignumFromLong(&big1, l1); mp_add(&big2, &big1, &big2); mp_clear(&big1); objResultPtr = Tcl_NewBignumObj(&big2); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } /* * Arguments are same sign; remainder is first operand. */ mp_clear(&big2); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } } #ifndef NO_WIDE_TYPE if (type1 == TCL_NUMBER_WIDE) { Tcl_WideInt w1 = *((const Tcl_WideInt *)ptr1); if (type2 != TCL_NUMBER_BIG) { Tcl_WideInt w2, wQuotient, wRemainder; Tcl_GetWideIntFromObj(NULL, value2Ptr, &w2); wQuotient = w1 / w2; /* * Force Tcl's integer division rules. * TODO: examine for logic simplification */ if (((wQuotient < (Tcl_WideInt) 0) || ((wQuotient == (Tcl_WideInt) 0) && ((w1 < (Tcl_WideInt)0 && w2 > (Tcl_WideInt)0) || (w1 > (Tcl_WideInt)0 && w2 < (Tcl_WideInt)0)))) && (wQuotient * w2 != w1)) { wQuotient -= (Tcl_WideInt) 1; } wRemainder = w1 - w2*wQuotient; objResultPtr = Tcl_NewWideIntObj(wRemainder); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } { mp_int big2; Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); /* TODO: internals intrusion */ if ((w1 > ((Tcl_WideInt) 0)) ^ (big2.sign == MP_ZPOS)) { /* * Arguments are opposite sign; remainder is sum. */ mp_int big1; TclBNInitBignumFromWideInt(&big1, w1); mp_add(&big2, &big1, &big2); mp_clear(&big1); objResultPtr = Tcl_NewBignumObj(&big2); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } /* * Arguments are same sign; remainder is first operand. */ mp_clear(&big2); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } } #endif { mp_int big1, big2, bigResult, bigRemainder; Tcl_GetBignumFromObj(NULL, valuePtr, &big1); Tcl_GetBignumFromObj(NULL, value2Ptr, &big2); mp_init(&bigResult); mp_init(&bigRemainder); mp_div(&big1, &big2, &bigResult, &bigRemainder); if (!mp_iszero(&bigRemainder) && (bigRemainder.sign != big2.sign)) { /* * Convert to Tcl's integer division rules. */ mp_sub_d(&bigResult, 1, &bigResult); mp_add(&bigRemainder, &big2, &bigRemainder); } mp_copy(&bigRemainder, &bigResult); mp_clear(&bigRemainder); mp_clear(&big1); mp_clear(&big2); TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewBignumObj(&bigResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetBignumObj(valuePtr, &bigResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } } /* * Reject negative shift argument. */ switch (type2) { case TCL_NUMBER_LONG: invalid = (*((const long *)ptr2) < (long)0); break; #ifndef NO_WIDE_TYPE case TCL_NUMBER_WIDE: invalid = (*((const Tcl_WideInt *)ptr2) < (Tcl_WideInt)0); break; #endif case TCL_NUMBER_BIG: { mp_int big2; Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); invalid = (mp_cmp_d(&big2, 0) == MP_LT); mp_clear(&big2); break; } default: /* Unused, here to silence compiler warning */ invalid = 0; } if (invalid) { Tcl_SetObjResult(interp, Tcl_NewStringObj("negative shift argument", -1)); result = TCL_ERROR; goto checkForCatch; } /* * Zero shifted any number of bits is still zero. */ if ((type1==TCL_NUMBER_LONG) && (*((const long *)ptr1) == (long)0)) { TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); objResultPtr = constants[0]; TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } if (*pc == INST_LSHIFT) { /* * Large left shifts create integer overflow. * * BEWARE! Can't use Tcl_GetIntFromObj() here because that * converts values in the (unsigned) range to their signed int * counterparts, leading to incorrect results. */ if ((type2 != TCL_NUMBER_LONG) || (*((const long *)ptr2) > (long) INT_MAX)) { /* * Technically, we could hold the value (1 << (INT_MAX+1)) in * an mp_int, but since we're using mp_mul_2d() to do the * work, and it takes only an int argument, that's a good * place to draw the line. */ Tcl_SetObjResult(interp, Tcl_NewStringObj( "integer value too large to represent", -1)); result = TCL_ERROR; goto checkForCatch; } shift = (int)(*((const long *)ptr2)); /* * Handle shifts within the native long range. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if ((type1 == TCL_NUMBER_LONG) && (size_t) shift < CHAR_BIT*sizeof(long) && ((l1 = *(const long *)ptr1) != 0) && !((l1>0 ? l1 : ~l1) & -(1L<<(CHAR_BIT*sizeof(long) - 1 - shift)))) { TclNewLongObj(objResultPtr, (l1<<shift)); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } /* * Handle shifts within the native wide range. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if ((type1 != TCL_NUMBER_BIG) && ((size_t)shift < CHAR_BIT*sizeof(Tcl_WideInt))) { Tcl_WideInt w; TclGetWideIntFromObj(NULL, valuePtr, &w); if (!((w>0 ? w : ~w) & -(((Tcl_WideInt)1) << (CHAR_BIT*sizeof(Tcl_WideInt) - 1 - shift)))) { objResultPtr = Tcl_NewWideIntObj(w<<shift); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } } } else { /* * Quickly force large right shifts to 0 or -1. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if ((type2 != TCL_NUMBER_LONG) || (*(const long *)ptr2 > INT_MAX)) { /* * Again, technically, the value to be shifted could be an * mp_int so huge that a right shift by (INT_MAX+1) bits could * not take us to the result of 0 or -1, but since we're using * mp_div_2d to do the work, and it takes only an int * argument, we draw the line there. */ int zero; switch (type1) { case TCL_NUMBER_LONG: zero = (*(const long *)ptr1 > 0L); break; #ifndef NO_WIDE_TYPE case TCL_NUMBER_WIDE: zero = (*(const Tcl_WideInt *)ptr1 > (Tcl_WideInt)0); break; #endif case TCL_NUMBER_BIG: { mp_int big1; Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); zero = (mp_cmp_d(&big1, 0) == MP_GT); mp_clear(&big1); break; } default: /* Unused, here to silence compiler warning. */ zero = 0; } if (zero) { objResultPtr = constants[0]; } else { TclNewIntObj(objResultPtr, -1); } TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } shift = (int)(*(const long *)ptr2); /* * Handle shifts within the native long range. */ if (type1 == TCL_NUMBER_LONG) { l1 = *((const long *)ptr1); if ((size_t)shift >= CHAR_BIT*sizeof(long)) { if (l1 >= (long)0) { objResultPtr = constants[0]; } else { TclNewIntObj(objResultPtr, -1); } } else { TclNewLongObj(objResultPtr, (l1 >> shift)); } TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } #ifndef NO_WIDE_TYPE /* * Handle shifts within the native wide range. */ if (type1 == TCL_NUMBER_WIDE) { Tcl_WideInt w = *(const Tcl_WideInt *)ptr1; if ((size_t)shift >= CHAR_BIT*sizeof(Tcl_WideInt)) { if (w >= (Tcl_WideInt)0) { objResultPtr = constants[0]; } else { TclNewIntObj(objResultPtr, -1); } } else { objResultPtr = Tcl_NewWideIntObj(w >> shift); } TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } #endif } { mp_int big, bigResult, bigRemainder; Tcl_TakeBignumFromObj(NULL, valuePtr, &big); mp_init(&bigResult); if (*pc == INST_LSHIFT) { mp_mul_2d(&big, shift, &bigResult); } else { mp_init(&bigRemainder); mp_div_2d(&big, shift, &bigResult, &bigRemainder); if (mp_cmp_d(&bigRemainder, 0) == MP_LT) { /* * Convert to Tcl's integer division rules. */ mp_sub_d(&bigResult, 1, &bigResult); } mp_clear(&bigRemainder); } mp_clear(&big); if (!Tcl_IsShared(valuePtr)) { Tcl_SetBignumObj(valuePtr, &bigResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } objResultPtr = Tcl_NewBignumObj(&bigResult); } TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } case INST_BITOR: case INST_BITXOR: case INST_BITAND: { ClientData ptr1, ptr2; int type1, type2; Tcl_Obj *value2Ptr = OBJ_AT_TOS; Tcl_Obj *valuePtr = OBJ_UNDER_TOS; result = GetNumberFromObj(NULL, valuePtr, &ptr1, &type1); if ((result != TCL_OK) || (type1 == TCL_NUMBER_NAN) || (type1 == TCL_NUMBER_DOUBLE)) { result = TCL_ERROR; TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n", O2S(valuePtr), O2S(value2Ptr), (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); IllegalExprOperandType(interp, pc, valuePtr); goto checkForCatch; } result = GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2); if ((result != TCL_OK) || (type2 == TCL_NUMBER_NAN) || (type2 == TCL_NUMBER_DOUBLE)) { result = TCL_ERROR; TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n", O2S(valuePtr), O2S(value2Ptr), (value2Ptr->typePtr? value2Ptr->typePtr->name : "null"))); IllegalExprOperandType(interp, pc, value2Ptr); goto checkForCatch; } if ((type1 == TCL_NUMBER_BIG) || (type2 == TCL_NUMBER_BIG)) { mp_int big1, big2, bigResult, *First, *Second; int numPos; Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); /* * Count how many positive arguments we have. If only one of the * arguments is negative, store it in 'Second'. */ if (mp_cmp_d(&big1, 0) != MP_LT) { numPos = 1 + (mp_cmp_d(&big2, 0) != MP_LT); First = &big1; Second = &big2; } else { First = &big2; Second = &big1; numPos = (mp_cmp_d(First, 0) != MP_LT); } mp_init(&bigResult); switch (*pc) { case INST_BITAND: switch (numPos) { case 2: /* * Both arguments positive, base case. */ mp_and(First, Second, &bigResult); break; case 1: /* * First is positive; second negative: * P & N = P & ~~N = P&~(-N-1) = P & (P ^ (-N-1)) */ mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_xor(First, Second, &bigResult); mp_and(First, &bigResult, &bigResult); break; case 0: /* * Both arguments negative: * a & b = ~ (~a | ~b) = -(-a-1|-b-1)-1 */ mp_neg(First, First); mp_sub_d(First, 1, First); mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_or(First, Second, &bigResult); mp_neg(&bigResult, &bigResult); mp_sub_d(&bigResult, 1, &bigResult); break; } break; case INST_BITOR: switch (numPos) { case 2: /* * Both arguments positive, base case. */ mp_or(First, Second, &bigResult); break; case 1: /* * First is positive; second negative: * N|P = ~(~N&~P) = ~((-N-1)&~P) = -((-N-1)&((-N-1)^P))-1 */ mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_xor(First, Second, &bigResult); mp_and(Second, &bigResult, &bigResult); mp_neg(&bigResult, &bigResult); mp_sub_d(&bigResult, 1, &bigResult); break; case 0: /* * Both arguments negative: * a | b = ~ (~a & ~b) = -(-a-1&-b-1)-1 */ mp_neg(First, First); mp_sub_d(First, 1, First); mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_and(First, Second, &bigResult); mp_neg(&bigResult, &bigResult); mp_sub_d(&bigResult, 1, &bigResult); break; } break; case INST_BITXOR: switch (numPos) { case 2: /* * Both arguments positive, base case. */ mp_xor(First, Second, &bigResult); break; case 1: /* * First is positive; second negative: * P^N = ~(P^~N) = -(P^(-N-1))-1 */ mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_xor(First, Second, &bigResult); mp_neg(&bigResult, &bigResult); mp_sub_d(&bigResult, 1, &bigResult); break; case 0: /* * Both arguments negative: * a ^ b = (~a ^ ~b) = (-a-1^-b-1) */ mp_neg(First, First); mp_sub_d(First, 1, First); mp_neg(Second, Second); mp_sub_d(Second, 1, Second); mp_xor(First, Second, &bigResult); break; } break; } mp_clear(&big1); mp_clear(&big2); TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewBignumObj(&bigResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetBignumObj(valuePtr, &bigResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } #ifndef NO_WIDE_TYPE if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE)) { Tcl_WideInt wResult, w1, w2; TclGetWideIntFromObj(NULL, valuePtr, &w1); TclGetWideIntFromObj(NULL, value2Ptr, &w2); switch (*pc) { case INST_BITAND: wResult = w1 & w2; break; case INST_BITOR: wResult = w1 | w2; break; case INST_BITXOR: wResult = w1 ^ w2; break; default: /* Unused, here to silence compiler warning. */ wResult = 0; } TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewWideIntObj(wResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetWideIntObj(valuePtr, wResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } #endif { long lResult, l1 = *((const long *)ptr1); long l2 = *((const long *)ptr2); switch (*pc) { case INST_BITAND: lResult = l1 & l2; break; case INST_BITOR: lResult = l1 | l2; break; case INST_BITXOR: lResult = l1 ^ l2; break; default: /* Unused, here to silence compiler warning. */ lResult = 0; } TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { TclNewLongObj(objResultPtr, lResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } TclSetLongObj(valuePtr, lResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } } case INST_EXPON: case INST_ADD: case INST_SUB: case INST_DIV: case INST_MULT: { ClientData ptr1, ptr2; int type1, type2; Tcl_Obj *value2Ptr = OBJ_AT_TOS; Tcl_Obj *valuePtr = OBJ_UNDER_TOS; result = GetNumberFromObj(NULL, valuePtr, &ptr1, &type1); if ((result != TCL_OK) #ifndef ACCEPT_NAN || (type1 == TCL_NUMBER_NAN) #endif ) { result = TCL_ERROR; TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n", O2S(value2Ptr), O2S(valuePtr), (valuePtr->typePtr? valuePtr->typePtr->name: "null"))); IllegalExprOperandType(interp, pc, valuePtr); goto checkForCatch; } #ifdef ACCEPT_NAN if (type1 == TCL_NUMBER_NAN) { /* * NaN first argument -> result is also NaN. */ NEXT_INST_F(1, 1, 0); } #endif result = GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2); if ((result != TCL_OK) #ifndef ACCEPT_NAN || (type2 == TCL_NUMBER_NAN) #endif ) { result = TCL_ERROR; TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n", O2S(value2Ptr), O2S(valuePtr), (value2Ptr->typePtr? value2Ptr->typePtr->name: "null"))); IllegalExprOperandType(interp, pc, value2Ptr); goto checkForCatch; } #ifdef ACCEPT_NAN if (type2 == TCL_NUMBER_NAN) { /* * NaN second argument -> result is also NaN. */ objResultPtr = value2Ptr; NEXT_INST_F(1, 2, 1); } #endif if ((type1 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_DOUBLE)) { /* * At least one of the values is floating-point, so perform * floating point calculations. */ double d1, d2, dResult; Tcl_GetDoubleFromObj(NULL, valuePtr, &d1); Tcl_GetDoubleFromObj(NULL, value2Ptr, &d2); switch (*pc) { case INST_ADD: dResult = d1 + d2; break; case INST_SUB: dResult = d1 - d2; break; case INST_MULT: dResult = d1 * d2; break; case INST_DIV: #ifndef IEEE_FLOATING_POINT if (d2 == 0.0) { TRACE(("%.6g %.6g => DIVIDE BY ZERO\n", d1, d2)); goto divideByZero; } #endif /* * We presume that we are running with zero-divide unmasked if * we're on an IEEE box. Otherwise, this statement might cause * demons to fly out our noses. */ dResult = d1 / d2; break; case INST_EXPON: if (d1==0.0 && d2<0.0) { TRACE(("%.6g %.6g => EXPONENT OF ZERO\n", d1, d2)); goto exponOfZero; } dResult = pow(d1, d2); break; default: /* Unused, here to silence compiler warning. */ dResult = 0; } #ifndef ACCEPT_NAN /* * Check now for IEEE floating-point error. */ if (TclIsNaN(dResult)) { TRACE(("%.20s %.20s => IEEE FLOATING PT ERROR\n", O2S(valuePtr), O2S(value2Ptr))); TclExprFloatError(interp, dResult); result = TCL_ERROR; goto checkForCatch; } #endif TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { TclNewDoubleObj(objResultPtr, dResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } TclSetDoubleObj(valuePtr, dResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } if ((sizeof(long) >= 2*sizeof(int)) && (*pc == INST_MULT) && (type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) { long l1 = *((const long *)ptr1); long l2 = *((const long *)ptr2); if ((l1 <= INT_MAX) && (l1 >= INT_MIN) && (l2 <= INT_MAX) && (l2 >= INT_MIN)) { long lResult = l1 * l2; TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { TclNewLongObj(objResultPtr,lResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } TclSetLongObj(valuePtr, lResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } } if ((sizeof(Tcl_WideInt) >= 2*sizeof(long)) && (*pc == INST_MULT) && (type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) { Tcl_WideInt w1, w2, wResult; TclGetWideIntFromObj(NULL, valuePtr, &w1); TclGetWideIntFromObj(NULL, value2Ptr, &w2); wResult = w1 * w2; TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewWideIntObj(wResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetWideIntObj(valuePtr, wResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } /* TODO: Attempts to re-use unshared operands on stack. */ if (*pc == INST_EXPON) { long l1 = 0, l2 = 0; Tcl_WideInt w1; int oddExponent = 0, negativeExponent = 0; if (type2 == TCL_NUMBER_LONG) { l2 = *((const long *) ptr2); if (l2 == 0) { /* * Anything to the zero power is 1. */ objResultPtr = constants[1]; NEXT_INST_F(1, 2, 1); } else if (l2 == 1) { /* * Anything to the first power is itself */ NEXT_INST_F(1, 1, 0); } } switch (type2) { case TCL_NUMBER_LONG: { negativeExponent = (l2 < 0); oddExponent = (int) (l2 & 1); break; } #ifndef NO_WIDE_TYPE case TCL_NUMBER_WIDE: { Tcl_WideInt w2 = *((const Tcl_WideInt *)ptr2); negativeExponent = (w2 < 0); oddExponent = (int) (w2 & (Tcl_WideInt)1); break; } #endif case TCL_NUMBER_BIG: { mp_int big2; Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); negativeExponent = (mp_cmp_d(&big2, 0) == MP_LT); mp_mod_2d(&big2, 1, &big2); oddExponent = !mp_iszero(&big2); mp_clear(&big2); break; } } if (negativeExponent) { if (type1 == TCL_NUMBER_LONG) { l1 = *((const long *)ptr1); switch (l1) { case 0: /* * Zero to a negative power is div by zero error. */ TRACE(("%s %s => EXPONENT OF ZERO\n", O2S(valuePtr), O2S(value2Ptr))); goto exponOfZero; case -1: if (oddExponent) { TclNewIntObj(objResultPtr, -1); } else { objResultPtr = constants[1]; } NEXT_INST_F(1, 2, 1); case 1: /* * 1 to any power is 1. */ objResultPtr = constants[1]; NEXT_INST_F(1, 2, 1); } } /* * Integers with magnitude greater than 1 raise to a negative * power yield the answer zero (see TIP 123). */ objResultPtr = constants[0]; NEXT_INST_F(1, 2, 1); } if (type1 == TCL_NUMBER_LONG) { l1 = *((const long *)ptr1); switch (l1) { case 0: /* * Zero to a positive power is zero. */ objResultPtr = constants[0]; NEXT_INST_F(1, 2, 1); case 1: /* * 1 to any power is 1. */ objResultPtr = constants[1]; NEXT_INST_F(1, 2, 1); case -1: if (oddExponent) { TclNewIntObj(objResultPtr, -1); } else { objResultPtr = constants[1]; } NEXT_INST_F(1, 2, 1); } } if (type2 == TCL_NUMBER_BIG) { Tcl_SetObjResult(interp, Tcl_NewStringObj("exponent too large", -1)); result = TCL_ERROR; goto checkForCatch; } if (type1 == TCL_NUMBER_LONG && type2 == TCL_NUMBER_LONG) { if (l1 == 2) { /* * Reduce small powers of 2 to shifts. */ if ((unsigned long) l2 < CHAR_BIT * sizeof(long) - 1) { TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); TclNewLongObj(objResultPtr, (1L << l2)); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } #if !defined(TCL_WIDE_INT_IS_LONG) if ((unsigned long)l2 < CHAR_BIT*sizeof(Tcl_WideInt) - 1){ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); objResultPtr = Tcl_NewWideIntObj(((Tcl_WideInt) 1) << l2); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } #endif } if (l1 == -2) { int signum = oddExponent ? -1 : 1; /* * Reduce small powers of 2 to shifts. */ if ((unsigned long) l2 < CHAR_BIT * sizeof(long) - 1) { TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); TclNewLongObj(objResultPtr, signum * (1L << l2)); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } #if !defined(TCL_WIDE_INT_IS_LONG) if ((unsigned long)l2 < CHAR_BIT*sizeof(Tcl_WideInt) - 1){ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); objResultPtr = Tcl_NewWideIntObj( signum * (((Tcl_WideInt) 1) << l2)); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } #endif } #if (LONG_MAX == 0x7fffffff) if (l2 <= 8 && l1 <= MaxBase32[l2-2] && l1 >= -MaxBase32[l2-2]) { /* * Small powers of 32-bit integers. */ long lResult = l1 * l1; /* b**2 */ switch (l2) { case 2: break; case 3: lResult *= l1; /* b**3 */ break; case 4: lResult *= lResult; /* b**4 */ break; case 5: lResult *= lResult; /* b**4 */ lResult *= l1; /* b**5 */ break; case 6: lResult *= l1; /* b**3 */ lResult *= lResult; /* b**6 */ break; case 7: lResult *= l1; /* b**3 */ lResult *= lResult; /* b**6 */ lResult *= l1; /* b**7 */ break; case 8: lResult *= lResult; /* b**4 */ lResult *= lResult; /* b**8 */ break; } TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { TclNewLongObj(objResultPtr, lResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetLongObj(valuePtr, lResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } if (l1 >= 3 && ((unsigned long) l1 < (sizeof(Exp32Index) / sizeof(unsigned short)) - 1)) { unsigned short base = Exp32Index[l1-3] + (unsigned short) l2 - 9; if (base < Exp32Index[l1-2]) { /* * 32-bit number raised to intermediate power, done by * table lookup. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { TclNewLongObj(objResultPtr, Exp32Value[base]); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetLongObj(valuePtr, Exp32Value[base]); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } } if (-l1 >= 3 && (unsigned long)(-l1) < (sizeof(Exp32Index) / sizeof(unsigned short)) - 1) { unsigned short base = Exp32Index[-l1-3] + (unsigned short) l2 - 9; if (base < Exp32Index[-l1-2]) { long lResult = (oddExponent) ? -Exp32Value[base] : Exp32Value[base]; /* * 32-bit number raised to intermediate power, done by * table lookup. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { TclNewLongObj(objResultPtr, lResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetLongObj(valuePtr, lResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } } #endif } if (type1 == TCL_NUMBER_LONG) { w1 = l1; #ifndef NO_WIDE_TYPE } else if (type1 == TCL_NUMBER_WIDE) { w1 = *((const Tcl_WideInt*) ptr1); #endif } else { w1 = 0; } #if (LONG_MAX > 0x7fffffff) || !defined(TCL_WIDE_INT_IS_LONG) if (w1 != 0 && type2 == TCL_NUMBER_LONG && l2 <= 16 && w1 <= MaxBaseWide[l2-2] && w1 >= -MaxBaseWide[l2-2]) { /* * Small powers of integers whose result is wide. */ Tcl_WideInt wResult = w1 * w1; /* b**2 */ switch (l2) { case 2: break; case 3: wResult *= l1; /* b**3 */ break; case 4: wResult *= wResult; /* b**4 */ break; case 5: wResult *= wResult; /* b**4 */ wResult *= w1; /* b**5 */ break; case 6: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ break; case 7: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ wResult *= w1; /* b**7 */ break; case 8: wResult *= wResult; /* b**4 */ wResult *= wResult; /* b**8 */ break; case 9: wResult *= wResult; /* b**4 */ wResult *= wResult; /* b**8 */ wResult *= w1; /* b**9 */ break; case 10: wResult *= wResult; /* b**4 */ wResult *= w1; /* b**5 */ wResult *= wResult; /* b**10 */ break; case 11: wResult *= wResult; /* b**4 */ wResult *= w1; /* b**5 */ wResult *= wResult; /* b**10 */ wResult *= w1; /* b**11 */ break; case 12: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ wResult *= wResult; /* b**12 */ break; case 13: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ wResult *= wResult; /* b**12 */ wResult *= w1; /* b**13 */ break; case 14: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ wResult *= w1; /* b**7 */ wResult *= wResult; /* b**14 */ break; case 15: wResult *= w1; /* b**3 */ wResult *= wResult; /* b**6 */ wResult *= w1; /* b**7 */ wResult *= wResult; /* b**14 */ wResult *= w1; /* b**15 */ break; case 16: wResult *= wResult; /* b**4 */ wResult *= wResult; /* b**8 */ wResult *= wResult; /* b**16 */ break; } TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); objResultPtr = Tcl_NewWideIntObj(wResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } /* * Handle cases of powers > 16 that still fit in a 64-bit word by * doing table lookup. */ if (w1 >= 3 && (Tcl_WideUInt) w1 < (sizeof(Exp64Index) / sizeof(unsigned short)) - 1) { unsigned short base = Exp64Index[w1-3] + (unsigned short) l2 - 17; if (base < Exp64Index[w1-2]) { /* * 64-bit number raised to intermediate power, done by * table lookup. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewWideIntObj(Exp64Value[base]); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetWideIntObj(valuePtr, Exp64Value[base]); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } } if (-w1 >= 3 && (Tcl_WideUInt) (-w1) < (sizeof(Exp64Index) / sizeof(unsigned short)) - 1) { unsigned short base = Exp64Index[-w1-3] + (unsigned short) l2 - 17; if (base < Exp64Index[-w1-2]) { Tcl_WideInt wResult = (oddExponent) ? -Exp64Value[base] : Exp64Value[base]; /* * 64-bit number raised to intermediate power, done by * table lookup. */ TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewWideIntObj(wResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetWideIntObj(valuePtr, wResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } } #endif goto overflow; } if ((*pc != INST_MULT) && (type1 != TCL_NUMBER_BIG) && (type2 != TCL_NUMBER_BIG)) { Tcl_WideInt w1, w2, wResult; TclGetWideIntFromObj(NULL, valuePtr, &w1); TclGetWideIntFromObj(NULL, value2Ptr, &w2); switch (*pc) { case INST_ADD: wResult = w1 + w2; #ifndef NO_WIDE_TYPE if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE)) #endif { /* * Check for overflow. */ if (Overflowing(w1, w2, wResult)) { goto overflow; } } break; case INST_SUB: wResult = w1 - w2; #ifndef NO_WIDE_TYPE if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE)) #endif { /* * Must check for overflow. The macro tests for overflows * in sums by looking at the sign bits. As we have a * subtraction here, we are adding -w2. As -w2 could in * turn overflow, we test with ~w2 instead: it has the * opposite sign bit to w2 so it does the job. Note that * the only "bad" case (w2==0) is irrelevant for this * macro, as in that case w1 and wResult have the same * sign and there is no overflow anyway. */ if (Overflowing(w1, ~w2, wResult)) { goto overflow; } } break; case INST_DIV: if (w2 == 0) { TRACE(("%s %s => DIVIDE BY ZERO\n", O2S(valuePtr), O2S(value2Ptr))); goto divideByZero; } /* * Need a bignum to represent (LLONG_MIN / -1) */ if ((w1 == LLONG_MIN) && (w2 == -1)) { goto overflow; } wResult = w1 / w2; /* * Force Tcl's integer division rules. * TODO: examine for logic simplification */ if (((wResult < 0) || ((wResult == 0) && ((w1 < 0 && w2 > 0) || (w1 > 0 && w2 < 0)))) && ((wResult * w2) != w1)) { wResult -= 1; } break; default: /* * Unused, here to silence compiler warning. */ wResult = 0; } TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewWideIntObj(wResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetWideIntObj(valuePtr, wResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } overflow: { mp_int big1, big2, bigResult, bigRemainder; TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr))); Tcl_TakeBignumFromObj(NULL, valuePtr, &big1); Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2); mp_init(&bigResult); switch (*pc) { case INST_ADD: mp_add(&big1, &big2, &bigResult); break; case INST_SUB: mp_sub(&big1, &big2, &bigResult); break; case INST_MULT: mp_mul(&big1, &big2, &bigResult); break; case INST_DIV: if (mp_iszero(&big2)) { TRACE(("%s %s => DIVIDE BY ZERO\n", O2S(valuePtr), O2S(value2Ptr))); mp_clear(&big1); mp_clear(&big2); mp_clear(&bigResult); goto divideByZero; } mp_init(&bigRemainder); mp_div(&big1, &big2, &bigResult, &bigRemainder); /* TODO: internals intrusion */ if (!mp_iszero(&bigRemainder) && (bigRemainder.sign != big2.sign)) { /* * Convert to Tcl's integer division rules. */ mp_sub_d(&bigResult, 1, &bigResult); mp_add(&bigRemainder, &big2, &bigRemainder); } mp_clear(&bigRemainder); break; case INST_EXPON: if (big2.used > 1) { Tcl_SetObjResult(interp, Tcl_NewStringObj("exponent too large", -1)); mp_clear(&big1); mp_clear(&big2); mp_clear(&bigResult); result = TCL_ERROR; goto checkForCatch; } mp_expt_d(&big1, big2.dp[0], &bigResult); break; } mp_clear(&big1); mp_clear(&big2); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewBignumObj(&bigResult); TRACE(("%s\n", O2S(objResultPtr))); NEXT_INST_F(1, 2, 1); } Tcl_SetBignumObj(valuePtr, &bigResult); TRACE(("%s\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 0); } } case INST_LNOT: { int b; Tcl_Obj *valuePtr = OBJ_AT_TOS; /* TODO - check claim that taking address of b harms performance */ /* TODO - consider optimization search for constants */ result = TclGetBooleanFromObj(NULL, valuePtr, &b); if (result != TCL_OK) { TRACE(("\"%.20s\" => ILLEGAL TYPE %s\n", O2S(valuePtr), (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); IllegalExprOperandType(interp, pc, valuePtr); goto checkForCatch; } /* TODO: Consider peephole opt. */ objResultPtr = constants[!b]; NEXT_INST_F(1, 1, 1); } case INST_BITNOT: { mp_int big; ClientData ptr; int type; Tcl_Obj *valuePtr = OBJ_AT_TOS; result = GetNumberFromObj(NULL, valuePtr, &ptr, &type); if ((result != TCL_OK) || (type == TCL_NUMBER_NAN) || (type == TCL_NUMBER_DOUBLE)) { /* * ... ~$NonInteger => raise an error. */ result = TCL_ERROR; TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr), (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); IllegalExprOperandType(interp, pc, valuePtr); goto checkForCatch; } if (type == TCL_NUMBER_LONG) { long l = *((const long *)ptr); if (Tcl_IsShared(valuePtr)) { TclNewLongObj(objResultPtr, ~l); NEXT_INST_F(1, 1, 1); } TclSetLongObj(valuePtr, ~l); NEXT_INST_F(1, 0, 0); } #ifndef NO_WIDE_TYPE if (type == TCL_NUMBER_WIDE) { Tcl_WideInt w = *((const Tcl_WideInt *)ptr); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewWideIntObj(~w); NEXT_INST_F(1, 1, 1); } Tcl_SetWideIntObj(valuePtr, ~w); NEXT_INST_F(1, 0, 0); } #endif Tcl_TakeBignumFromObj(NULL, valuePtr, &big); /* ~a = - a - 1 */ mp_neg(&big, &big); mp_sub_d(&big, 1, &big); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewBignumObj(&big); NEXT_INST_F(1, 1, 1); } Tcl_SetBignumObj(valuePtr, &big); NEXT_INST_F(1, 0, 0); } case INST_UMINUS: { ClientData ptr; int type; Tcl_Obj *valuePtr = OBJ_AT_TOS; result = GetNumberFromObj(NULL, valuePtr, &ptr, &type); if ((result != TCL_OK) #ifndef ACCEPT_NAN || (type == TCL_NUMBER_NAN) #endif ) { result = TCL_ERROR; TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr), (valuePtr->typePtr? valuePtr->typePtr->name : "null"))); IllegalExprOperandType(interp, pc, valuePtr); goto checkForCatch; } switch (type) { case TCL_NUMBER_DOUBLE: { double d; if (Tcl_IsShared(valuePtr)) { TclNewDoubleObj(objResultPtr, -(*((const double *)ptr))); NEXT_INST_F(1, 1, 1); } d = *((const double *)ptr); TclSetDoubleObj(valuePtr, -d); NEXT_INST_F(1, 0, 0); } case TCL_NUMBER_LONG: { long l = *((const long *)ptr); if (l != LONG_MIN) { if (Tcl_IsShared(valuePtr)) { TclNewLongObj(objResultPtr, -l); NEXT_INST_F(1, 1, 1); } TclSetLongObj(valuePtr, -l); NEXT_INST_F(1, 0, 0); } /* FALLTHROUGH */ } #ifndef NO_WIDE_TYPE case TCL_NUMBER_WIDE: { Tcl_WideInt w; if (type == TCL_NUMBER_LONG) { w = (Tcl_WideInt)(*((const long *)ptr)); } else { w = *((const Tcl_WideInt *)ptr); } if (w != LLONG_MIN) { if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewWideIntObj(-w); NEXT_INST_F(1, 1, 1); } Tcl_SetWideIntObj(valuePtr, -w); NEXT_INST_F(1, 0, 0); } /* FALLTHROUGH */ } #endif case TCL_NUMBER_BIG: { mp_int big; switch (type) { #ifdef NO_WIDE_TYPE case TCL_NUMBER_LONG: TclBNInitBignumFromLong(&big, *(const long *) ptr); break; #else case TCL_NUMBER_WIDE: TclBNInitBignumFromWideInt(&big, *(const Tcl_WideInt *) ptr); break; #endif case TCL_NUMBER_BIG: Tcl_TakeBignumFromObj(NULL, valuePtr, &big); } mp_neg(&big, &big); if (Tcl_IsShared(valuePtr)) { objResultPtr = Tcl_NewBignumObj(&big); NEXT_INST_F(1, 1, 1); } Tcl_SetBignumObj(valuePtr, &big); NEXT_INST_F(1, 0, 0); } case TCL_NUMBER_NAN: /* -NaN => NaN */ NEXT_INST_F(1, 0, 0); } } case INST_UPLUS: case INST_TRY_CVT_TO_NUMERIC: { /* * Try to convert the topmost stack object to numeric object. This is * done in order to support [expr]'s policy of interpreting operands * if at all possible as numbers first, then strings. */ ClientData ptr; int type; Tcl_Obj *valuePtr = OBJ_AT_TOS; if (GetNumberFromObj(NULL, valuePtr, &ptr, &type) != TCL_OK) { if (*pc == INST_UPLUS) { /* * ... +$NonNumeric => raise an error. */ result = TCL_ERROR; TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr), (valuePtr->typePtr? valuePtr->typePtr->name:"null"))); IllegalExprOperandType(interp, pc, valuePtr); goto checkForCatch; } else { /* ... TryConvertToNumeric($NonNumeric) is acceptable */ TRACE(("\"%.20s\" => not numeric\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); } } #ifndef ACCEPT_NAN if (type == TCL_NUMBER_NAN) { result = TCL_ERROR; if (*pc == INST_UPLUS) { /* * ... +$NonNumeric => raise an error. */ TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr), (valuePtr->typePtr? valuePtr->typePtr->name:"null"))); IllegalExprOperandType(interp, pc, valuePtr); } else { /* * Numeric conversion of NaN -> error. */ TRACE(("\"%.20s\" => IEEE FLOATING PT ERROR\n", O2S(objResultPtr))); TclExprFloatError(interp, *((const double *)ptr)); } goto checkForCatch; } #endif /* * Ensure that the numeric value has a string rep the same as the * formatted version of its internal rep. This is used, e.g., to make * sure that "expr {0001}" yields "1", not "0001". We implement this * by _discarding_ the string rep since we know it will be * regenerated, if needed later, by formatting the internal rep's * value. */ if (valuePtr->bytes == NULL) { TRACE(("\"%.20s\" => numeric, same Tcl_Obj\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); } if (Tcl_IsShared(valuePtr)) { /* * Here we do some surgery within the Tcl_Obj internals. We want * to copy the intrep, but not the string, so we temporarily hide * the string so we do not copy it. */ char *savedString = valuePtr->bytes; valuePtr->bytes = NULL; objResultPtr = Tcl_DuplicateObj(valuePtr); valuePtr->bytes = savedString; TRACE(("\"%.20s\" => numeric, new Tcl_Obj\n", O2S(valuePtr))); NEXT_INST_F(1, 1, 1); } TclInvalidateStringRep(valuePtr); TRACE(("\"%.20s\" => numeric, same Tcl_Obj\n", O2S(valuePtr))); NEXT_INST_F(1, 0, 0); } case INST_BREAK: /* DECACHE_STACK_INFO(); Tcl_ResetResult(interp); CACHE_STACK_INFO(); */ result = TCL_BREAK; cleanup = 0; goto processExceptionReturn; case INST_CONTINUE: /* DECACHE_STACK_INFO(); Tcl_ResetResult(interp); CACHE_STACK_INFO(); */ result = TCL_CONTINUE; cleanup = 0; goto processExceptionReturn; case INST_FOREACH_START4: { /* * Initialize the temporary local var that holds the count of the * number of iterations of the loop body to -1. */ int opnd, iterTmpIndex; ForeachInfo *infoPtr; Var *iterVarPtr; Tcl_Obj *oldValuePtr; opnd = TclGetUInt4AtPtr(pc+1); infoPtr = (ForeachInfo *) codePtr->auxDataArrayPtr[opnd].clientData; iterTmpIndex = infoPtr->loopCtTemp; iterVarPtr = &(compiledLocals[iterTmpIndex]); oldValuePtr = iterVarPtr->value.objPtr; if (oldValuePtr == NULL) { TclNewLongObj(iterVarPtr->value.objPtr, -1); Tcl_IncrRefCount(iterVarPtr->value.objPtr); } else { TclSetLongObj(oldValuePtr, -1); } TRACE(("%u => loop iter count temp %d\n", opnd, iterTmpIndex)); #ifndef TCL_COMPILE_DEBUG /* * Remark that the compiler ALWAYS sets INST_FOREACH_STEP4 immediately * after INST_FOREACH_START4 - let us just fall through instead of * jumping back to the top. */ pc += 5; TCL_DTRACE_INST_NEXT(); #else NEXT_INST_F(5, 0, 0); #endif } case INST_FOREACH_STEP4: { /* * "Step" a foreach loop (i.e., begin its next iteration) by assigning * the next value list element to each loop var. */ ForeachInfo *infoPtr; ForeachVarList *varListPtr; Tcl_Obj *listPtr,*valuePtr, *value2Ptr, **elements; Var *iterVarPtr, *listVarPtr, *varPtr; int opnd, numLists, iterNum, listTmpIndex, listLen, numVars; int varIndex, valIndex, continueLoop, j; long i; opnd = TclGetUInt4AtPtr(pc+1); infoPtr = (ForeachInfo *) codePtr->auxDataArrayPtr[opnd].clientData; numLists = infoPtr->numLists; /* * Increment the temp holding the loop iteration number. */ iterVarPtr = &(compiledLocals[infoPtr->loopCtTemp]); valuePtr = iterVarPtr->value.objPtr; iterNum = (valuePtr->internalRep.longValue + 1); TclSetLongObj(valuePtr, iterNum); /* * Check whether all value lists are exhausted and we should stop the * loop. */ continueLoop = 0; listTmpIndex = infoPtr->firstValueTemp; for (i = 0; i < numLists; i++) { varListPtr = infoPtr->varLists[i]; numVars = varListPtr->numVars; listVarPtr = &(compiledLocals[listTmpIndex]); listPtr = listVarPtr->value.objPtr; result = TclListObjLength(interp, listPtr, &listLen); if (result == TCL_OK) { if (listLen > (iterNum * numVars)) { continueLoop = 1; } listTmpIndex++; } else { TRACE_WITH_OBJ(("%u => ERROR converting list %ld, \"%s\": ", opnd, i, O2S(listPtr)), Tcl_GetObjResult(interp)); goto checkForCatch; } } /* * If some var in some var list still has a remaining list element * iterate one more time. Assign to var the next element from its * value list. We already checked above that each list temp holds a * valid list object (by calling Tcl_ListObjLength), but cannot rely * on that check remaining valid: one list could have been shimmered * as a side effect of setting a traced variable. */ if (continueLoop) { listTmpIndex = infoPtr->firstValueTemp; for (i = 0; i < numLists; i++) { varListPtr = infoPtr->varLists[i]; numVars = varListPtr->numVars; listVarPtr = &(compiledLocals[listTmpIndex]); listPtr = TclListObjCopy(NULL, listVarPtr->value.objPtr); TclListObjGetElements(interp, listPtr, &listLen, &elements); valIndex = (iterNum * numVars); for (j = 0; j < numVars; j++) { if (valIndex >= listLen) { TclNewObj(valuePtr); } else { valuePtr = elements[valIndex]; } varIndex = varListPtr->varIndexes[j]; varPtr = &(compiledLocals[varIndex]); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } if (TclIsVarDirectWritable(varPtr)) { value2Ptr = varPtr->value.objPtr; if (valuePtr != value2Ptr) { if (value2Ptr != NULL) { TclDecrRefCount(value2Ptr); } varPtr->value.objPtr = valuePtr; Tcl_IncrRefCount(valuePtr); } } else { DECACHE_STACK_INFO(); value2Ptr = TclPtrSetVar(interp, varPtr, NULL, NULL, NULL, valuePtr, TCL_LEAVE_ERR_MSG, varIndex); CACHE_STACK_INFO(); if (value2Ptr == NULL) { TRACE_WITH_OBJ(( "%u => ERROR init. index temp %d: ", opnd,varIndex), Tcl_GetObjResult(interp)); result = TCL_ERROR; TclDecrRefCount(listPtr); goto checkForCatch; } } valIndex++; } TclDecrRefCount(listPtr); listTmpIndex++; } } TRACE(("%u => %d lists, iter %d, %s loop\n", opnd, numLists, iterNum, (continueLoop? "continue" : "exit"))); /* * Run-time peep-hole optimisation: the compiler ALWAYS follows * INST_FOREACH_STEP4 with an INST_JUMP_FALSE. We just skip that * instruction and jump direct from here. */ pc += 5; if (*pc == INST_JUMP_FALSE1) { NEXT_INST_F((continueLoop? 2 : TclGetInt1AtPtr(pc+1)), 0, 0); } else { NEXT_INST_F((continueLoop? 5 : TclGetInt4AtPtr(pc+1)), 0, 0); } } case INST_BEGIN_CATCH4: /* * Record start of the catch command with exception range index equal * to the operand. Push the current stack depth onto the special catch * stack. */ *(++catchTop) = CURR_DEPTH; TRACE(("%u => catchTop=%d, stackTop=%d\n", TclGetUInt4AtPtr(pc+1), (catchTop - initCatchTop - 1), (int) CURR_DEPTH)); NEXT_INST_F(5, 0, 0); case INST_END_CATCH: catchTop--; Tcl_ResetResult(interp); result = TCL_OK; TRACE(("=> catchTop=%d\n", (catchTop - initCatchTop - 1))); NEXT_INST_F(1, 0, 0); case INST_PUSH_RESULT: objResultPtr = Tcl_GetObjResult(interp); TRACE_WITH_OBJ(("=> "), objResultPtr); /* * See the comments at INST_INVOKE_STK */ { Tcl_Obj *newObjResultPtr; TclNewObj(newObjResultPtr); Tcl_IncrRefCount(newObjResultPtr); iPtr->objResultPtr = newObjResultPtr; } NEXT_INST_F(1, 0, -1); case INST_PUSH_RETURN_CODE: TclNewIntObj(objResultPtr, result); TRACE(("=> %u\n", result)); NEXT_INST_F(1, 0, 1); case INST_PUSH_RETURN_OPTIONS: objResultPtr = Tcl_GetReturnOptions(interp, result); TRACE_WITH_OBJ(("=> "), objResultPtr); NEXT_INST_F(1, 0, 1); /* TODO: normalize "valPtr" to "valuePtr" */ { int opnd, opnd2, allocateDict; Tcl_Obj *dictPtr, *valPtr; Var *varPtr; case INST_DICT_GET: opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => ", opnd)); dictPtr = OBJ_AT_DEPTH(opnd); if (opnd > 1) { dictPtr = TclTraceDictPath(interp, dictPtr, opnd-1, &OBJ_AT_DEPTH(opnd-1), DICT_PATH_READ); if (dictPtr == NULL) { TRACE_WITH_OBJ(( "%u => ERROR tracing dictionary path into \"%s\": ", opnd, O2S(OBJ_AT_DEPTH(opnd))), Tcl_GetObjResult(interp)); result = TCL_ERROR; goto checkForCatch; } } result = Tcl_DictObjGet(interp, dictPtr, OBJ_AT_TOS, &objResultPtr); if ((result == TCL_OK) && objResultPtr) { TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(5, opnd+1, 1); } if (result != TCL_OK) { TRACE_WITH_OBJ(( "%u => ERROR reading leaf dictionary key \"%s\": ", opnd, O2S(dictPtr)), Tcl_GetObjResult(interp)); } else { /*Tcl_ResetResult(interp);*/ Tcl_AppendResult(interp, "key \"", TclGetString(OBJ_AT_TOS), "\" not known in dictionary", NULL); TRACE_WITH_OBJ(("%u => ERROR ", opnd), Tcl_GetObjResult(interp)); result = TCL_ERROR; } goto checkForCatch; case INST_DICT_SET: case INST_DICT_UNSET: case INST_DICT_INCR_IMM: opnd = TclGetUInt4AtPtr(pc+1); opnd2 = TclGetUInt4AtPtr(pc+5); varPtr = &(compiledLocals[opnd2]); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u %u => ", opnd, opnd2)); if (TclIsVarDirectReadable(varPtr)) { dictPtr = varPtr->value.objPtr; } else { DECACHE_STACK_INFO(); dictPtr = TclPtrGetVar(interp, varPtr, NULL,NULL,NULL, 0, opnd2); CACHE_STACK_INFO(); } if (dictPtr == NULL) { TclNewObj(dictPtr); allocateDict = 1; } else { allocateDict = Tcl_IsShared(dictPtr); if (allocateDict) { dictPtr = Tcl_DuplicateObj(dictPtr); } } switch (*pc) { case INST_DICT_SET: cleanup = opnd + 1; result = Tcl_DictObjPutKeyList(interp, dictPtr, opnd, &OBJ_AT_DEPTH(opnd), OBJ_AT_TOS); break; case INST_DICT_INCR_IMM: cleanup = 1; opnd = TclGetInt4AtPtr(pc+1); result = Tcl_DictObjGet(interp, dictPtr, OBJ_AT_TOS, &valPtr); if (result != TCL_OK) { break; } if (valPtr == NULL) { Tcl_DictObjPut(NULL, dictPtr, OBJ_AT_TOS,Tcl_NewIntObj(opnd)); } else { Tcl_Obj *incrPtr = Tcl_NewIntObj(opnd); Tcl_IncrRefCount(incrPtr); if (Tcl_IsShared(valPtr)) { valPtr = Tcl_DuplicateObj(valPtr); Tcl_DictObjPut(NULL, dictPtr, OBJ_AT_TOS, valPtr); } result = TclIncrObj(interp, valPtr, incrPtr); if (result == TCL_OK) { Tcl_InvalidateStringRep(dictPtr); } TclDecrRefCount(incrPtr); } break; case INST_DICT_UNSET: cleanup = opnd; result = Tcl_DictObjRemoveKeyList(interp, dictPtr, opnd, &OBJ_AT_DEPTH(opnd-1)); break; default: cleanup = 0; /* stop compiler warning */ Tcl_Panic("Should not happen!"); } if (result != TCL_OK) { if (allocateDict) { TclDecrRefCount(dictPtr); } TRACE_WITH_OBJ(("%u %u => ERROR updating dictionary: ", opnd, opnd2), Tcl_GetObjResult(interp)); goto checkForCatch; } if (TclIsVarDirectWritable(varPtr)) { if (allocateDict) { Tcl_Obj *oldValuePtr = varPtr->value.objPtr; Tcl_IncrRefCount(dictPtr); if (oldValuePtr != NULL) { TclDecrRefCount(oldValuePtr); } varPtr->value.objPtr = dictPtr; } objResultPtr = dictPtr; } else { Tcl_IncrRefCount(dictPtr); DECACHE_STACK_INFO(); objResultPtr = TclPtrSetVar(interp, varPtr, NULL, NULL, NULL, dictPtr, TCL_LEAVE_ERR_MSG, opnd2); CACHE_STACK_INFO(); TclDecrRefCount(dictPtr); if (objResultPtr == NULL) { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; goto checkForCatch; } } #ifndef TCL_COMPILE_DEBUG if (*(pc+9) == INST_POP) { NEXT_INST_V(10, cleanup, 0); } #endif TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_V(9, cleanup, 1); case INST_DICT_APPEND: case INST_DICT_LAPPEND: opnd = TclGetUInt4AtPtr(pc+1); varPtr = &(compiledLocals[opnd]); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u => ", opnd)); if (TclIsVarDirectReadable(varPtr)) { dictPtr = varPtr->value.objPtr; } else { DECACHE_STACK_INFO(); dictPtr = TclPtrGetVar(interp, varPtr, NULL, NULL, NULL, 0, opnd); CACHE_STACK_INFO(); } if (dictPtr == NULL) { TclNewObj(dictPtr); allocateDict = 1; } else { allocateDict = Tcl_IsShared(dictPtr); if (allocateDict) { dictPtr = Tcl_DuplicateObj(dictPtr); } } result = Tcl_DictObjGet(interp, dictPtr, OBJ_UNDER_TOS, &valPtr); if (result != TCL_OK) { if (allocateDict) { TclDecrRefCount(dictPtr); } goto checkForCatch; } /* * Note that a non-existent key results in a NULL valPtr, which is a * case handled separately below. What we *can* say at this point is * that the write-back will always succeed. */ switch (*pc) { case INST_DICT_APPEND: if (valPtr == NULL) { valPtr = OBJ_AT_TOS; } else { if (Tcl_IsShared(valPtr)) { valPtr = Tcl_DuplicateObj(valPtr); } Tcl_AppendObjToObj(valPtr, OBJ_AT_TOS); } break; case INST_DICT_LAPPEND: /* * More complex because list-append can fail. */ if (valPtr == NULL) { valPtr = Tcl_NewListObj(1, &OBJ_AT_TOS); } else if (Tcl_IsShared(valPtr)) { valPtr = Tcl_DuplicateObj(valPtr); result = Tcl_ListObjAppendElement(interp, valPtr, OBJ_AT_TOS); if (result != TCL_OK) { TclDecrRefCount(valPtr); if (allocateDict) { TclDecrRefCount(dictPtr); } goto checkForCatch; } } else { result = Tcl_ListObjAppendElement(interp, valPtr, OBJ_AT_TOS); if (result != TCL_OK) { if (allocateDict) { TclDecrRefCount(dictPtr); } goto checkForCatch; } } break; default: Tcl_Panic("Should not happen!"); } Tcl_DictObjPut(NULL, dictPtr, OBJ_UNDER_TOS, valPtr); if (TclIsVarDirectWritable(varPtr)) { if (allocateDict) { Tcl_Obj *oldValuePtr = varPtr->value.objPtr; Tcl_IncrRefCount(dictPtr); if (oldValuePtr != NULL) { TclDecrRefCount(oldValuePtr); } varPtr->value.objPtr = dictPtr; } objResultPtr = dictPtr; } else { Tcl_IncrRefCount(dictPtr); DECACHE_STACK_INFO(); objResultPtr = TclPtrSetVar(interp, varPtr, NULL, NULL, NULL, dictPtr, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); TclDecrRefCount(dictPtr); if (objResultPtr == NULL) { TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp)))); result = TCL_ERROR; goto checkForCatch; } } #ifndef TCL_COMPILE_DEBUG if (*(pc+5) == INST_POP) { NEXT_INST_F(6, 2, 0); } #endif TRACE_APPEND(("%.30s\n", O2S(objResultPtr))); NEXT_INST_F(5, 2, 1); } { int opnd, done; Tcl_Obj *statePtr, *dictPtr, *keyPtr, *valuePtr, *emptyPtr; Var *varPtr; Tcl_DictSearch *searchPtr; case INST_DICT_FIRST: opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => ", opnd)); dictPtr = POP_OBJECT(); searchPtr = (Tcl_DictSearch *) ckalloc(sizeof(Tcl_DictSearch)); result = Tcl_DictObjFirst(interp, dictPtr, searchPtr, &keyPtr, &valuePtr, &done); if (result != TCL_OK) { ckfree((char *) searchPtr); goto checkForCatch; } TclNewObj(statePtr); statePtr->typePtr = &dictIteratorType; statePtr->internalRep.twoPtrValue.ptr1 = (void *) searchPtr; statePtr->internalRep.twoPtrValue.ptr2 = (void *) dictPtr; varPtr = (compiledLocals + opnd); if (varPtr->value.objPtr) { if (varPtr->value.objPtr->typePtr != &dictIteratorType) { TclDecrRefCount(varPtr->value.objPtr); } else { Tcl_Panic("mis-issued dictFirst!"); } } varPtr->value.objPtr = statePtr; Tcl_IncrRefCount(statePtr); goto pushDictIteratorResult; case INST_DICT_NEXT: opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => ", opnd)); statePtr = compiledLocals[opnd].value.objPtr; if (statePtr == NULL || statePtr->typePtr != &dictIteratorType) { Tcl_Panic("mis-issued dictNext!"); } searchPtr = (Tcl_DictSearch *) statePtr->internalRep.twoPtrValue.ptr1; Tcl_DictObjNext(searchPtr, &keyPtr, &valuePtr, &done); pushDictIteratorResult: if (done) { TclNewObj(emptyPtr); PUSH_OBJECT(emptyPtr); PUSH_OBJECT(emptyPtr); } else { PUSH_OBJECT(valuePtr); PUSH_OBJECT(keyPtr); } TRACE_APPEND(("\"%.30s\" \"%.30s\" %d", O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS), done)); objResultPtr = constants[done]; /* TODO: consider opt like INST_FOREACH_STEP4 */ NEXT_INST_F(5, 0, 1); case INST_DICT_DONE: opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => ", opnd)); statePtr = compiledLocals[opnd].value.objPtr; if (statePtr == NULL) { Tcl_Panic("mis-issued dictDone!"); } if (statePtr->typePtr == &dictIteratorType) { /* * First kill the search, and then release the reference to the * dictionary that we were holding. */ searchPtr = (Tcl_DictSearch *) statePtr->internalRep.twoPtrValue.ptr1; Tcl_DictObjDone(searchPtr); ckfree((char *) searchPtr); dictPtr = (Tcl_Obj *) statePtr->internalRep.twoPtrValue.ptr2; TclDecrRefCount(dictPtr); /* * Set the internal variable to an empty object to signify that we * don't hold an iterator. */ TclDecrRefCount(statePtr); TclNewObj(emptyPtr); compiledLocals[opnd].value.objPtr = emptyPtr; Tcl_IncrRefCount(emptyPtr); } NEXT_INST_F(5, 0, 0); } { int opnd, opnd2, i, length, allocdict; Tcl_Obj **keyPtrPtr, *dictPtr; DictUpdateInfo *duiPtr; Var *varPtr; case INST_DICT_UPDATE_START: opnd = TclGetUInt4AtPtr(pc+1); opnd2 = TclGetUInt4AtPtr(pc+5); varPtr = &(compiledLocals[opnd]); duiPtr = codePtr->auxDataArrayPtr[opnd2].clientData; while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u => ", opnd)); if (TclIsVarDirectReadable(varPtr)) { dictPtr = varPtr->value.objPtr; } else { DECACHE_STACK_INFO(); dictPtr = TclPtrGetVar(interp, varPtr, NULL, NULL, NULL, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); if (dictPtr == NULL) { goto dictUpdateStartFailed; } } if (TclListObjGetElements(interp, OBJ_AT_TOS, &length, &keyPtrPtr) != TCL_OK) { goto dictUpdateStartFailed; } if (length != duiPtr->length) { Tcl_Panic("dictUpdateStart argument length mismatch"); } for (i=0 ; i<length ; i++) { Tcl_Obj *valPtr; if (Tcl_DictObjGet(interp, dictPtr, keyPtrPtr[i], &valPtr) != TCL_OK) { goto dictUpdateStartFailed; } varPtr = &(compiledLocals[duiPtr->varIndices[i]]); while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } DECACHE_STACK_INFO(); if (valPtr == NULL) { TclObjUnsetVar2(interp, localName(iPtr->varFramePtr, duiPtr->varIndices[i]), NULL, 0); } else if (TclPtrSetVar(interp, varPtr, NULL, NULL, NULL, valPtr, TCL_LEAVE_ERR_MSG, duiPtr->varIndices[i]) == NULL) { CACHE_STACK_INFO(); dictUpdateStartFailed: result = TCL_ERROR; goto checkForCatch; } CACHE_STACK_INFO(); } NEXT_INST_F(9, 0, 0); case INST_DICT_UPDATE_END: opnd = TclGetUInt4AtPtr(pc+1); opnd2 = TclGetUInt4AtPtr(pc+5); varPtr = &(compiledLocals[opnd]); duiPtr = codePtr->auxDataArrayPtr[opnd2].clientData; while (TclIsVarLink(varPtr)) { varPtr = varPtr->value.linkPtr; } TRACE(("%u => ", opnd)); if (TclIsVarDirectReadable(varPtr)) { dictPtr = varPtr->value.objPtr; } else { DECACHE_STACK_INFO(); dictPtr = TclPtrGetVar(interp, varPtr, NULL, NULL, NULL, 0, opnd); CACHE_STACK_INFO(); } if (dictPtr == NULL) { NEXT_INST_F(9, 1, 0); } if (Tcl_DictObjSize(interp, dictPtr, &length) != TCL_OK || TclListObjGetElements(interp, OBJ_AT_TOS, &length, &keyPtrPtr) != TCL_OK) { result = TCL_ERROR; goto checkForCatch; } allocdict = Tcl_IsShared(dictPtr); if (allocdict) { dictPtr = Tcl_DuplicateObj(dictPtr); } for (i=0 ; i<length ; i++) { Tcl_Obj *valPtr; Var *var2Ptr; var2Ptr = &(compiledLocals[duiPtr->varIndices[i]]); while (TclIsVarLink(var2Ptr)) { var2Ptr = var2Ptr->value.linkPtr; } if (TclIsVarDirectReadable(var2Ptr)) { valPtr = var2Ptr->value.objPtr; } else { DECACHE_STACK_INFO(); valPtr = TclPtrGetVar(interp, var2Ptr, NULL, NULL, NULL, 0, duiPtr->varIndices[i]); CACHE_STACK_INFO(); } if (valPtr == NULL) { Tcl_DictObjRemove(interp, dictPtr, keyPtrPtr[i]); } else if (dictPtr == valPtr) { Tcl_DictObjPut(interp, dictPtr, keyPtrPtr[i], Tcl_DuplicateObj(valPtr)); } else { Tcl_DictObjPut(interp, dictPtr, keyPtrPtr[i], valPtr); } } if (TclIsVarDirectWritable(varPtr)) { Tcl_IncrRefCount(dictPtr); TclDecrRefCount(varPtr->value.objPtr); varPtr->value.objPtr = dictPtr; } else { DECACHE_STACK_INFO(); objResultPtr = TclPtrSetVar(interp, varPtr, NULL, NULL, NULL, dictPtr, TCL_LEAVE_ERR_MSG, opnd); CACHE_STACK_INFO(); if (objResultPtr == NULL) { if (allocdict) { TclDecrRefCount(dictPtr); } result = TCL_ERROR; goto checkForCatch; } } NEXT_INST_F(9, 1, 0); } default: Tcl_Panic("TclExecuteByteCode: unrecognized opCode %u", *pc); } /* end of switch on opCode */ /* * Division by zero in an expression. Control only reaches this point by * "goto divideByZero". */ divideByZero: Tcl_SetObjResult(interp, Tcl_NewStringObj("divide by zero", -1)); Tcl_SetErrorCode(interp, "ARITH", "DIVZERO", "divide by zero", NULL); result = TCL_ERROR; goto checkForCatch; /* * Exponentiation of zero by negative number in an expression. Control * only reaches this point by "goto exponOfZero". */ exponOfZero: Tcl_SetObjResult(interp, Tcl_NewStringObj( "exponentiation of zero by negative power", -1)); Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", "exponentiation of zero by negative power", NULL); result = TCL_ERROR; goto checkForCatch; /* * Block for variables needed to process exception returns. */ { ExceptionRange *rangePtr; /* Points to closest loop or catch exception * range enclosing the pc. Used by various * instructions and processCatch to process * break, continue, and errors. */ Tcl_Obj *valuePtr; const char *bytes; int length; #if TCL_COMPILE_DEBUG int opnd; #endif /* * An external evaluation (INST_INVOKE or INST_EVAL) returned * something different from TCL_OK, or else INST_BREAK or * INST_CONTINUE were called. */ processExceptionReturn: #if TCL_COMPILE_DEBUG switch (*pc) { case INST_INVOKE_STK1: opnd = TclGetUInt1AtPtr(pc+1); TRACE(("%u => ... after \"%.20s\": ", opnd, cmdNameBuf)); break; case INST_INVOKE_STK4: opnd = TclGetUInt4AtPtr(pc+1); TRACE(("%u => ... after \"%.20s\": ", opnd, cmdNameBuf)); break; case INST_EVAL_STK: /* * Note that the object at stacktop has to be used before doing * the cleanup. */ TRACE(("\"%.30s\" => ", O2S(OBJ_AT_TOS))); break; default: TRACE(("=> ")); } #endif if ((result == TCL_CONTINUE) || (result == TCL_BREAK)) { rangePtr = GetExceptRangeForPc(pc, /*catchOnly*/ 0, codePtr); if (rangePtr == NULL) { TRACE_APPEND(("no encl. loop or catch, returning %s\n", StringForResultCode(result))); goto abnormalReturn; } if (rangePtr->type == CATCH_EXCEPTION_RANGE) { TRACE_APPEND(("%s ...\n", StringForResultCode(result))); goto processCatch; } while (cleanup--) { valuePtr = POP_OBJECT(); TclDecrRefCount(valuePtr); } if (result == TCL_BREAK) { result = TCL_OK; pc = (codePtr->codeStart + rangePtr->breakOffset); TRACE_APPEND(("%s, range at %d, new pc %d\n", StringForResultCode(result), rangePtr->codeOffset, rangePtr->breakOffset)); NEXT_INST_F(0, 0, 0); } else { if (rangePtr->continueOffset == -1) { TRACE_APPEND(( "%s, loop w/o continue, checking for catch\n", StringForResultCode(result))); goto checkForCatch; } result = TCL_OK; pc = (codePtr->codeStart + rangePtr->continueOffset); TRACE_APPEND(("%s, range at %d, new pc %d\n", StringForResultCode(result), rangePtr->codeOffset, rangePtr->continueOffset)); NEXT_INST_F(0, 0, 0); } #if TCL_COMPILE_DEBUG } else if (traceInstructions) { if ((result != TCL_ERROR) && (result != TCL_RETURN)) { Tcl_Obj *objPtr = Tcl_GetObjResult(interp); TRACE_APPEND(("OTHER RETURN CODE %d, result= \"%s\"\n ", result, O2S(objPtr))); } else { Tcl_Obj *objPtr = Tcl_GetObjResult(interp); TRACE_APPEND(("%s, result= \"%s\"\n", StringForResultCode(result), O2S(objPtr))); } #endif } /* * Execution has generated an "exception" such as TCL_ERROR. If the * exception is an error, record information about what was being * executed when the error occurred. Find the closest enclosing catch * range, if any. If no enclosing catch range is found, stop execution * and return the "exception" code. */ checkForCatch: if ((result == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) { bytes = GetSrcInfoForPc(pc, codePtr, &length); if (bytes != NULL) { DECACHE_STACK_INFO(); Tcl_LogCommandInfo(interp, codePtr->source, bytes, length); CACHE_STACK_INFO(); } } iPtr->flags &= ~ERR_ALREADY_LOGGED; /* * Clear all expansions that may have started after the last * INST_BEGIN_CATCH. */ while ((expandNestList != NULL) && ((catchTop == initCatchTop) || (*catchTop <= (ptrdiff_t) expandNestList->internalRep.twoPtrValue.ptr1))) { Tcl_Obj *objPtr = expandNestList->internalRep.twoPtrValue.ptr2; TclDecrRefCount(expandNestList); expandNestList = objPtr; } /* * We must not catch an exceeded limit. Instead, it blows outwards * until we either hit another interpreter (presumably where the limit * is not exceeded) or we get to the top-level. */ if (TclLimitExceeded(iPtr->limit)) { #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { fprintf(stdout, " ... limit exceeded, returning %s\n", StringForResultCode(result)); } #endif goto abnormalReturn; } if (catchTop == initCatchTop) { #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { fprintf(stdout, " ... no enclosing catch, returning %s\n", StringForResultCode(result)); } #endif goto abnormalReturn; } rangePtr = GetExceptRangeForPc(pc, /*catchOnly*/ 1, codePtr); if (rangePtr == NULL) { /* * This is only possible when compiling a [catch] that sends its * script to INST_EVAL. Cannot correct the compiler without * breakingcompat with previous .tbc compiled scripts. */ #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { fprintf(stdout, " ... no enclosing catch, returning %s\n", StringForResultCode(result)); } #endif goto abnormalReturn; } /* * A catch exception range (rangePtr) was found to handle an * "exception". It was found either by checkForCatch just above or by * an instruction during break, continue, or error processing. Jump to * its catchOffset after unwinding the operand stack to the depth it * had when starting to execute the range's catch command. */ processCatch: while (CURR_DEPTH > *catchTop) { valuePtr = POP_OBJECT(); TclDecrRefCount(valuePtr); } #ifdef TCL_COMPILE_DEBUG if (traceInstructions) { fprintf(stdout, " ... found catch at %d, catchTop=%d, " "unwound to %ld, new pc %u\n", rangePtr->codeOffset, catchTop - initCatchTop - 1, (long) *catchTop, (unsigned) rangePtr->catchOffset); } #endif pc = (codePtr->codeStart + rangePtr->catchOffset); NEXT_INST_F(0, 0, 0); /* Restart the execution loop at pc. */ /* * end of infinite loop dispatching on instructions. */ /* * Abnormal return code. Restore the stack to state it had when * starting to execute the ByteCode. Panic if the stack is below the * initial level. */ abnormalReturn: TCL_DTRACE_INST_LAST(); while (tosPtr > initTosPtr) { Tcl_Obj *objPtr = POP_OBJECT(); Tcl_DecrRefCount(objPtr); } /* * Clear all expansions. */ while (expandNestList) { Tcl_Obj *objPtr = expandNestList->internalRep.twoPtrValue.ptr2; TclDecrRefCount(expandNestList); expandNestList = objPtr; } if (tosPtr < initTosPtr) { fprintf(stderr, "\nTclExecuteByteCode: abnormal return at pc %u: " "stack top %d < entry stack top %d\n", (unsigned)(pc - codePtr->codeStart), (unsigned) CURR_DEPTH, (unsigned) 0); Tcl_Panic("TclExecuteByteCode execution failure: end stack top < start stack top"); } } /* * Restore the stack to the state it had previous to this bytecode. */ TclStackFree(interp, initCatchTop+1); return result; #undef iPtr }  #ifdef TCL_COMPILE_DEBUG /* *---------------------------------------------------------------------- * * PrintByteCodeInfo -- * * This procedure prints a summary about a bytecode object to stdout. It * is called by TclExecuteByteCode when starting to execute the bytecode * object if tclTraceExec has the value 2 or more. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static void PrintByteCodeInfo( register ByteCode *codePtr) /* The bytecode whose summary is printed to * stdout. */ { Proc *procPtr = codePtr->procPtr; Interp *iPtr = (Interp *) *codePtr->interpHandle; fprintf(stdout, "\nExecuting ByteCode 0x%p, refCt %u, epoch %u, interp 0x%p (epoch %u)\n", codePtr, codePtr->refCount, codePtr->compileEpoch, iPtr, iPtr->compileEpoch); fprintf(stdout, " Source: "); TclPrintSource(stdout, codePtr->source, 60); fprintf(stdout, "\n Cmds %d, src %d, inst %u, litObjs %u, aux %d, stkDepth %u, code/src %.2f\n", codePtr->numCommands, codePtr->numSrcBytes, codePtr->numCodeBytes, codePtr->numLitObjects, codePtr->numAuxDataItems, codePtr->maxStackDepth, #ifdef TCL_COMPILE_STATS codePtr->numSrcBytes? ((float)codePtr->structureSize)/codePtr->numSrcBytes : #endif 0.0); #ifdef TCL_COMPILE_STATS fprintf(stdout, " Code %lu = header %lu+inst %d+litObj %lu+exc %lu+aux %lu+cmdMap %d\n", (unsigned long) codePtr->structureSize, (unsigned long) (sizeof(ByteCode)-sizeof(size_t)-sizeof(Tcl_Time)), codePtr->numCodeBytes, (unsigned long) (codePtr->numLitObjects * sizeof(Tcl_Obj *)), (unsigned long) (codePtr->numExceptRanges*sizeof(ExceptionRange)), (unsigned long) (codePtr->numAuxDataItems * sizeof(AuxData)), codePtr->numCmdLocBytes); #endif /* TCL_COMPILE_STATS */ if (procPtr != NULL) { fprintf(stdout, " Proc 0x%p, refCt %d, args %d, compiled locals %d\n", procPtr, procPtr->refCount, procPtr->numArgs, procPtr->numCompiledLocals); } } #endif /* TCL_COMPILE_DEBUG */  /* *---------------------------------------------------------------------- * * ValidatePcAndStackTop -- * * This procedure is called by TclExecuteByteCode when debugging to * verify that the program counter and stack top are valid during * execution. * * Results: * None. * * Side effects: * Prints a message to stderr and panics if either the pc or stack top * are invalid. * *---------------------------------------------------------------------- */ #ifdef TCL_COMPILE_DEBUG static void ValidatePcAndStackTop( register ByteCode *codePtr, /* The bytecode whose summary is printed to * stdout. */ unsigned char *pc, /* Points to first byte of a bytecode * instruction. The program counter. */ int stackTop, /* Current stack top. Must be between * stackLowerBound and stackUpperBound * (inclusive). */ int stackLowerBound, /* Smallest legal value for stackTop. */ int checkStack) /* 0 if the stack depth check should be * skipped. */ { int stackUpperBound = stackLowerBound + codePtr->maxStackDepth; /* Greatest legal value for stackTop. */ unsigned relativePc = (unsigned) (pc - codePtr->codeStart); unsigned long codeStart = (unsigned long) codePtr->codeStart; unsigned long codeEnd = (unsigned long) (codePtr->codeStart + codePtr->numCodeBytes); unsigned char opCode = *pc; if (((unsigned long) pc < codeStart) || ((unsigned long) pc > codeEnd)) { fprintf(stderr, "\nBad instruction pc 0x%p in TclExecuteByteCode\n", pc); Tcl_Panic("TclExecuteByteCode execution failure: bad pc"); } if ((unsigned) opCode > LAST_INST_OPCODE) { fprintf(stderr, "\nBad opcode %d at pc %u in TclExecuteByteCode\n", (unsigned) opCode, relativePc); Tcl_Panic("TclExecuteByteCode execution failure: bad opcode"); } if (checkStack && ((stackTop < stackLowerBound) || (stackTop > stackUpperBound))) { int numChars; const char *cmd = GetSrcInfoForPc(pc, codePtr, &numChars); fprintf(stderr, "\nBad stack top %d at pc %u in TclExecuteByteCode (min %i, max %i)", stackTop, relativePc, stackLowerBound, stackUpperBound); if (cmd != NULL) { Tcl_Obj *message; TclNewLiteralStringObj(message, "\n executing "); Tcl_IncrRefCount(message); Tcl_AppendLimitedToObj(message, cmd, numChars, 100, NULL); fprintf(stderr,"%s\n", Tcl_GetString(message)); Tcl_DecrRefCount(message); } else { fprintf(stderr, "\n"); } Tcl_Panic("TclExecuteByteCode execution failure: bad stack top"); } } #endif /* TCL_COMPILE_DEBUG */  /* *---------------------------------------------------------------------- * * IllegalExprOperandType -- * * Used by TclExecuteByteCode to append an error message to the interp * result when an illegal operand type is detected by an expression * instruction. The argument opndPtr holds the operand object in error. * * Results: * None. * * Side effects: * An error message is appended to the interp result. * *---------------------------------------------------------------------- */ static void IllegalExprOperandType( Tcl_Interp *interp, /* Interpreter to which error information * pertains. */ unsigned char *pc, /* Points to the instruction being executed * when the illegal type was found. */ Tcl_Obj *opndPtr) /* Points to the operand holding the value * with the illegal type. */ { ClientData ptr; int type; unsigned char opcode = *pc; const char *description, *operator = operatorStrings[opcode - INST_LOR]; if (opcode == INST_EXPON) { operator = "**"; } if (GetNumberFromObj(NULL, opndPtr, &ptr, &type) != TCL_OK) { int numBytes; const char *bytes = Tcl_GetStringFromObj(opndPtr, &numBytes); if (numBytes == 0) { description = "empty string"; } else if (TclCheckBadOctal(NULL, bytes)) { description = "invalid octal number"; } else { description = "non-numeric string"; } } else if (type == TCL_NUMBER_NAN) { description = "non-numeric floating-point value"; } else if (type == TCL_NUMBER_DOUBLE) { description = "floating-point value"; } else { /* TODO: No caller needs this. Eliminate? */ description = "(big) integer"; } Tcl_SetObjResult(interp, Tcl_ObjPrintf( "can't use %s as operand of \"%s\"", description, operator)); }  /* *---------------------------------------------------------------------- * * TclGetSrcInfoForPc, GetSrcInfoForPc, TclGetSrcInfoForCmd -- * * Given a program counter value, finds the closest command in the * bytecode code unit's CmdLocation array and returns information about * that command's source: a pointer to its first byte and the number of * characters. * * Results: * If a command is found that encloses the program counter value, a * pointer to the command's source is returned and the length of the * source is stored at *lengthPtr. If multiple commands resulted in code * at pc, information about the closest enclosing command is returned. If * no matching command is found, NULL is returned and *lengthPtr is * unchanged. * * Side effects: * The CmdFrame at *cfPtr is updated. * *---------------------------------------------------------------------- */ const char * TclGetSrcInfoForCmd( Interp *iPtr, int *lenPtr) { CmdFrame *cfPtr = iPtr->cmdFramePtr; ByteCode *codePtr = (ByteCode *) cfPtr->data.tebc.codePtr; return GetSrcInfoForPc((unsigned char *) cfPtr->data.tebc.pc, codePtr, lenPtr); } void TclGetSrcInfoForPc( CmdFrame *cfPtr) { ByteCode *codePtr = (ByteCode *) cfPtr->data.tebc.codePtr; if (cfPtr->cmd.str.cmd == NULL) { cfPtr->cmd.str.cmd = GetSrcInfoForPc( (unsigned char *) cfPtr->data.tebc.pc, codePtr, &cfPtr->cmd.str.len); } if (cfPtr->cmd.str.cmd != NULL) { /* * We now have the command. We can get the srcOffset back and from * there find the list of word locations for this command. */ ExtCmdLoc *eclPtr; ECL *locPtr = NULL; int srcOffset, i; Interp *iPtr = (Interp *) *codePtr->interpHandle; Tcl_HashEntry *hePtr = Tcl_FindHashEntry(iPtr->lineBCPtr, (char *) codePtr); if (!hePtr) { return; } srcOffset = cfPtr->cmd.str.cmd - codePtr->source; eclPtr = (ExtCmdLoc *) Tcl_GetHashValue (hePtr); for (i=0; i < eclPtr->nuloc; i++) { if (eclPtr->loc[i].srcOffset == srcOffset) { locPtr = eclPtr->loc+i; break; } } if (locPtr == NULL) { Tcl_Panic("LocSearch failure"); } cfPtr->line = locPtr->line; cfPtr->nline = locPtr->nline; cfPtr->type = eclPtr->type; if (eclPtr->type == TCL_LOCATION_SOURCE) { cfPtr->data.eval.path = eclPtr->path; Tcl_IncrRefCount(cfPtr->data.eval.path); } /* * Do not set cfPtr->data.eval.path NULL for non-SOURCE. Needed for * cfPtr->data.tebc.codePtr. */ } } static const char * GetSrcInfoForPc( unsigned char *pc, /* The program counter value for which to * return the closest command's source info. * This points to a bytecode instruction in * codePtr's code. */ ByteCode *codePtr, /* The bytecode sequence in which to look up * the command source for the pc. */ int *lengthPtr) /* If non-NULL, the location where the length * of the command's source should be stored. * If NULL, no length is stored. */ { register int pcOffset = (pc - codePtr->codeStart); int numCmds = codePtr->numCommands; unsigned char *codeDeltaNext, *codeLengthNext; unsigned char *srcDeltaNext, *srcLengthNext; int codeOffset, codeLen, codeEnd, srcOffset, srcLen, delta, i; int bestDist = INT_MAX; /* Distance of pc to best cmd's start pc. */ int bestSrcOffset = -1; /* Initialized to avoid compiler warning. */ int bestSrcLength = -1; /* Initialized to avoid compiler warning. */ if ((pcOffset < 0) || (pcOffset >= codePtr->numCodeBytes)) { return NULL; } /* * Decode the code and source offset and length for each command. The * closest enclosing command is the last one whose code started before * pcOffset. */ codeDeltaNext = codePtr->codeDeltaStart; codeLengthNext = codePtr->codeLengthStart; srcDeltaNext = codePtr->srcDeltaStart; srcLengthNext = codePtr->srcLengthStart; codeOffset = srcOffset = 0; for (i = 0; i < numCmds; i++) { if ((unsigned) *codeDeltaNext == (unsigned) 0xFF) { codeDeltaNext++; delta = TclGetInt4AtPtr(codeDeltaNext); codeDeltaNext += 4; } else { delta = TclGetInt1AtPtr(codeDeltaNext); codeDeltaNext++; } codeOffset += delta; if ((unsigned) *codeLengthNext == (unsigned) 0xFF) { codeLengthNext++; codeLen = TclGetInt4AtPtr(codeLengthNext); codeLengthNext += 4; } else { codeLen = TclGetInt1AtPtr(codeLengthNext); codeLengthNext++; } codeEnd = (codeOffset + codeLen - 1); if ((unsigned) *srcDeltaNext == (unsigned) 0xFF) { srcDeltaNext++; delta = TclGetInt4AtPtr(srcDeltaNext); srcDeltaNext += 4; } else { delta = TclGetInt1AtPtr(srcDeltaNext); srcDeltaNext++; } srcOffset += delta; if ((unsigned) *srcLengthNext == (unsigned) 0xFF) { srcLengthNext++; srcLen = TclGetInt4AtPtr(srcLengthNext); srcLengthNext += 4; } else { srcLen = TclGetInt1AtPtr(srcLengthNext); srcLengthNext++; } if (codeOffset > pcOffset) { /* Best cmd already found */ break; } if (pcOffset <= codeEnd) { /* This cmd's code encloses pc */ int dist = (pcOffset - codeOffset); if (dist <= bestDist) { bestDist = dist; bestSrcOffset = srcOffset; bestSrcLength = srcLen; } } } if (bestDist == INT_MAX) { return NULL; } if (lengthPtr != NULL) { *lengthPtr = bestSrcLength; } return (codePtr->source + bestSrcOffset); }  /* *---------------------------------------------------------------------- * * GetExceptRangeForPc -- * * Given a program counter value, return the closest enclosing * ExceptionRange. * * Results: * In the normal case, catchOnly is 0 (false) and this procedure returns * a pointer to the most closely enclosing ExceptionRange structure * regardless of whether it is a loop or catch exception range. This is * appropriate when processing a TCL_BREAK or TCL_CONTINUE, which will be * "handled" either by a loop exception range or a closer catch range. If * catchOnly is nonzero, this procedure ignores loop exception ranges and * returns a pointer to the closest catch range. If no matching * ExceptionRange is found that encloses pc, a NULL is returned. * * Side effects: * None. * *---------------------------------------------------------------------- */ static ExceptionRange * GetExceptRangeForPc( unsigned char *pc, /* The program counter value for which to * search for a closest enclosing exception * range. This points to a bytecode * instruction in codePtr's code. */ int catchOnly, /* If 0, consider either loop or catch * ExceptionRanges in search. If nonzero * consider only catch ranges (and ignore any * closer loop ranges). */ ByteCode *codePtr) /* Points to the ByteCode in which to search * for the enclosing ExceptionRange. */ { ExceptionRange *rangeArrayPtr; int numRanges = codePtr->numExceptRanges; register ExceptionRange *rangePtr; int pcOffset = pc - codePtr->codeStart; register int start; if (numRanges == 0) { return NULL; } /* * This exploits peculiarities of our compiler: nested ranges are always * *after* their containing ranges, so that by scanning backwards we are * sure that the first matching range is indeed the deepest. */ rangeArrayPtr = codePtr->exceptArrayPtr; rangePtr = rangeArrayPtr + numRanges; while (--rangePtr >= rangeArrayPtr) { start = rangePtr->codeOffset; if ((start <= pcOffset) && (pcOffset < (start + rangePtr->numCodeBytes))) { if ((!catchOnly) || (rangePtr->type == CATCH_EXCEPTION_RANGE)) { return rangePtr; } } } return NULL; }  /* *---------------------------------------------------------------------- * * GetOpcodeName -- * * This procedure is called by the TRACE and TRACE_WITH_OBJ macros used * in TclExecuteByteCode when debugging. It returns the name of the * bytecode instruction at a specified instruction pc. * * Results: * A character string for the instruction. * * Side effects: * None. * *---------------------------------------------------------------------- */ #ifdef TCL_COMPILE_DEBUG static char * GetOpcodeName( unsigned char *pc) /* Points to the instruction whose name should * be returned. */ { unsigned char opCode = *pc; return tclInstructionTable[opCode].name; } #endif /* TCL_COMPILE_DEBUG */  /* *---------------------------------------------------------------------- * * TclExprFloatError -- * * This procedure is called when an error occurs during a floating-point * operation. It reads errno and sets interp->objResultPtr accordingly. * * Results: * interp->objResultPtr is set to hold an error message. * * Side effects: * None. * *---------------------------------------------------------------------- */ void TclExprFloatError( Tcl_Interp *interp, /* Where to store error message. */ double value) /* Value returned after error; used to * distinguish underflows from overflows. */ { const char *s; if ((errno == EDOM) || TclIsNaN(value)) { s = "domain error: argument not in valid range"; Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1)); Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", s, NULL); } else if ((errno == ERANGE) || TclIsInfinite(value)) { if (value == 0.0) { s = "floating-point value too small to represent"; Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1)); Tcl_SetErrorCode(interp, "ARITH", "UNDERFLOW", s, NULL); } else { s = "floating-point value too large to represent"; Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1)); Tcl_SetErrorCode(interp, "ARITH", "OVERFLOW", s, NULL); } } else { Tcl_Obj *objPtr = Tcl_ObjPrintf( "unknown floating-point error, errno = %d", errno); Tcl_SetErrorCode(interp, "ARITH", "UNKNOWN", Tcl_GetString(objPtr), NULL); Tcl_SetObjResult(interp, objPtr); } }  #ifdef TCL_COMPILE_STATS /* *---------------------------------------------------------------------- * * TclLog2 -- * * Procedure used while collecting compilation statistics to determine * the log base 2 of an integer. * * Results: * Returns the log base 2 of the operand. If the argument is less than or * equal to zero, a zero is returned. * * Side effects: * None. * *---------------------------------------------------------------------- */ int TclLog2( register int value) /* The integer for which to compute the log * base 2. */ { register int n = value; register int result = 0; while (n > 1) { n = n >> 1; result++; } return result; }  /* *---------------------------------------------------------------------- * * EvalStatsCmd -- * * Implements the "evalstats" command that prints instruction execution * counts to stdout. * * Results: * Standard Tcl results. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int EvalStatsCmd( ClientData unused, /* Unused. */ Tcl_Interp *interp, /* The current interpreter. */ int objc, /* The number of arguments. */ Tcl_Obj *const objv[]) /* The argument strings. */ { Interp *iPtr = (Interp *) interp; LiteralTable *globalTablePtr = &iPtr->literalTable; ByteCodeStats *statsPtr = &iPtr->stats; double totalCodeBytes, currentCodeBytes; double totalLiteralBytes, currentLiteralBytes; double objBytesIfUnshared, strBytesIfUnshared, sharingBytesSaved; double strBytesSharedMultX, strBytesSharedOnce; double numInstructions, currentHeaderBytes; long numCurrentByteCodes, numByteCodeLits; long refCountSum, literalMgmtBytes, sum; int numSharedMultX, numSharedOnce; int decadeHigh, minSizeDecade, maxSizeDecade, length, i; char *litTableStats; LiteralEntry *entryPtr; #define Percent(a,b) ((a) * 100.0 / (b)) numInstructions = 0.0; for (i = 0; i < 256; i++) { if (statsPtr->instructionCount[i] != 0) { numInstructions += statsPtr->instructionCount[i]; } } totalLiteralBytes = sizeof(LiteralTable) + iPtr->literalTable.numBuckets * sizeof(LiteralEntry *) + (statsPtr->numLiteralsCreated * sizeof(LiteralEntry)) + (statsPtr->numLiteralsCreated * sizeof(Tcl_Obj)) + statsPtr->totalLitStringBytes; totalCodeBytes = statsPtr->totalByteCodeBytes + totalLiteralBytes; numCurrentByteCodes = statsPtr->numCompilations - statsPtr->numByteCodesFreed; currentHeaderBytes = numCurrentByteCodes * (sizeof(ByteCode) - sizeof(size_t) - sizeof(Tcl_Time)); literalMgmtBytes = sizeof(LiteralTable) + (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)) + (iPtr->literalTable.numEntries * sizeof(LiteralEntry)); currentLiteralBytes = literalMgmtBytes + iPtr->literalTable.numEntries * sizeof(Tcl_Obj) + statsPtr->currentLitStringBytes; currentCodeBytes = statsPtr->currentByteCodeBytes + currentLiteralBytes; /* * Summary statistics, total and current source and ByteCode sizes. */ fprintf(stdout, "\n----------------------------------------------------------------\n"); fprintf(stdout, "Compilation and execution statistics for interpreter 0x%p\n", iPtr); fprintf(stdout, "\nNumber ByteCodes executed %ld\n", statsPtr->numExecutions); fprintf(stdout, "Number ByteCodes compiled %ld\n", statsPtr->numCompilations); fprintf(stdout, " Mean executions/compile %.1f\n", statsPtr->numExecutions / (float)statsPtr->numCompilations); fprintf(stdout, "\nInstructions executed %.0f\n", numInstructions); fprintf(stdout, " Mean inst/compile %.0f\n", numInstructions / statsPtr->numCompilations); fprintf(stdout, " Mean inst/execution %.0f\n", numInstructions / statsPtr->numExecutions); fprintf(stdout, "\nTotal ByteCodes %ld\n", statsPtr->numCompilations); fprintf(stdout, " Source bytes %.6g\n", statsPtr->totalSrcBytes); fprintf(stdout, " Code bytes %.6g\n", totalCodeBytes); fprintf(stdout, " ByteCode bytes %.6g\n", statsPtr->totalByteCodeBytes); fprintf(stdout, " Literal bytes %.6g\n", totalLiteralBytes); fprintf(stdout, " table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n", (unsigned long) sizeof(LiteralTable), (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)), (unsigned long) (statsPtr->numLiteralsCreated * sizeof(LiteralEntry)), (unsigned long) (statsPtr->numLiteralsCreated * sizeof(Tcl_Obj)), statsPtr->totalLitStringBytes); fprintf(stdout, " Mean code/compile %.1f\n", totalCodeBytes / statsPtr->numCompilations); fprintf(stdout, " Mean code/source %.1f\n", totalCodeBytes / statsPtr->totalSrcBytes); fprintf(stdout, "\nCurrent (active) ByteCodes %ld\n", numCurrentByteCodes); fprintf(stdout, " Source bytes %.6g\n", statsPtr->currentSrcBytes); fprintf(stdout, " Code bytes %.6g\n", currentCodeBytes); fprintf(stdout, " ByteCode bytes %.6g\n", statsPtr->currentByteCodeBytes); fprintf(stdout, " Literal bytes %.6g\n", currentLiteralBytes); fprintf(stdout, " table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n", (unsigned long) sizeof(LiteralTable), (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)), (unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry)), (unsigned long) (iPtr->literalTable.numEntries * sizeof(Tcl_Obj)), statsPtr->currentLitStringBytes); fprintf(stdout, " Mean code/source %.1f\n", currentCodeBytes / statsPtr->currentSrcBytes); fprintf(stdout, " Code + source bytes %.6g (%0.1f mean code/src)\n", (currentCodeBytes + statsPtr->currentSrcBytes), (currentCodeBytes / statsPtr->currentSrcBytes) + 1.0); /* * Tcl_IsShared statistics check * * This gives the refcount of each obj as Tcl_IsShared was called for it. * Shared objects must be duplicated before they can be modified. */ numSharedMultX = 0; fprintf(stdout, "\nTcl_IsShared object check (all objects):\n"); fprintf(stdout, " Object had refcount <=1 (not shared) %ld\n", tclObjsShared[1]); for (i = 2; i < TCL_MAX_SHARED_OBJ_STATS; i++) { fprintf(stdout, " refcount ==%d %ld\n", i, tclObjsShared[i]); numSharedMultX += tclObjsShared[i]; } fprintf(stdout, " refcount >=%d %ld\n", i, tclObjsShared[0]); numSharedMultX += tclObjsShared[0]; fprintf(stdout, " Total shared objects %d\n", numSharedMultX); /* * Literal table statistics. */ numByteCodeLits = 0; refCountSum = 0; numSharedMultX = 0; numSharedOnce = 0; objBytesIfUnshared = 0.0; strBytesIfUnshared = 0.0; strBytesSharedMultX = 0.0; strBytesSharedOnce = 0.0; for (i = 0; i < globalTablePtr->numBuckets; i++) { for (entryPtr = globalTablePtr->buckets[i]; entryPtr != NULL; entryPtr = entryPtr->nextPtr) { if (entryPtr->objPtr->typePtr == &tclByteCodeType) { numByteCodeLits++; } (void) Tcl_GetStringFromObj(entryPtr->objPtr, &length); refCountSum += entryPtr->refCount; objBytesIfUnshared += (entryPtr->refCount * sizeof(Tcl_Obj)); strBytesIfUnshared += (entryPtr->refCount * (length+1)); if (entryPtr->refCount > 1) { numSharedMultX++; strBytesSharedMultX += (length+1); } else { numSharedOnce++; strBytesSharedOnce += (length+1); } } } sharingBytesSaved = (objBytesIfUnshared + strBytesIfUnshared) - currentLiteralBytes; fprintf(stdout, "\nTotal objects (all interps) %ld\n", tclObjsAlloced); fprintf(stdout, "Current objects %ld\n", (tclObjsAlloced - tclObjsFreed)); fprintf(stdout, "Total literal objects %ld\n", statsPtr->numLiteralsCreated); fprintf(stdout, "\nCurrent literal objects %d (%0.1f%% of current objects)\n", globalTablePtr->numEntries, Percent(globalTablePtr->numEntries, tclObjsAlloced-tclObjsFreed)); fprintf(stdout, " ByteCode literals %ld (%0.1f%% of current literals)\n", numByteCodeLits, Percent(numByteCodeLits, globalTablePtr->numEntries)); fprintf(stdout, " Literals reused > 1x %d\n", numSharedMultX); fprintf(stdout, " Mean reference count %.2f\n", ((double) refCountSum) / globalTablePtr->numEntries); fprintf(stdout, " Mean len, str reused >1x %.2f\n", (numSharedMultX ? strBytesSharedMultX/numSharedMultX : 0.0)); fprintf(stdout, " Mean len, str used 1x %.2f\n", (numSharedOnce ? strBytesSharedOnce/numSharedOnce : 0.0)); fprintf(stdout, " Total sharing savings %.6g (%0.1f%% of bytes if no sharing)\n", sharingBytesSaved, Percent(sharingBytesSaved, objBytesIfUnshared+strBytesIfUnshared)); fprintf(stdout, " Bytes with sharing %.6g\n", currentLiteralBytes); fprintf(stdout, " table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n", (unsigned long) sizeof(LiteralTable), (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)), (unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry)), (unsigned long) (iPtr->literalTable.numEntries * sizeof(Tcl_Obj)), statsPtr->currentLitStringBytes); fprintf(stdout, " Bytes if no sharing %.6g = objects %.6g + strings %.6g\n", (objBytesIfUnshared + strBytesIfUnshared), objBytesIfUnshared, strBytesIfUnshared); fprintf(stdout, " String sharing savings %.6g = unshared %.6g - shared %.6g\n", (strBytesIfUnshared - statsPtr->currentLitStringBytes), strBytesIfUnshared, statsPtr->currentLitStringBytes); fprintf(stdout, " Literal mgmt overhead %ld (%0.1f%% of bytes with sharing)\n", literalMgmtBytes, Percent(literalMgmtBytes, currentLiteralBytes)); fprintf(stdout, " table %lu + buckets %lu + entries %lu\n", (unsigned long) sizeof(LiteralTable), (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)), (unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry))); /* * Breakdown of current ByteCode space requirements. */ fprintf(stdout, "\nBreakdown of current ByteCode requirements:\n"); fprintf(stdout, " Bytes Pct of Avg per\n"); fprintf(stdout, " total ByteCode\n"); fprintf(stdout, "Total %12.6g 100.00%% %8.1f\n", statsPtr->currentByteCodeBytes, statsPtr->currentByteCodeBytes / numCurrentByteCodes); fprintf(stdout, "Header %12.6g %8.1f%% %8.1f\n", currentHeaderBytes, Percent(currentHeaderBytes, statsPtr->currentByteCodeBytes), currentHeaderBytes / numCurrentByteCodes); fprintf(stdout, "Instructions %12.6g %8.1f%% %8.1f\n", statsPtr->currentInstBytes, Percent(statsPtr->currentInstBytes,statsPtr->currentByteCodeBytes), statsPtr->currentInstBytes / numCurrentByteCodes); fprintf(stdout, "Literal ptr array %12.6g %8.1f%% %8.1f\n", statsPtr->currentLitBytes, Percent(statsPtr->currentLitBytes,statsPtr->currentByteCodeBytes), statsPtr->currentLitBytes / numCurrentByteCodes); fprintf(stdout, "Exception table %12.6g %8.1f%% %8.1f\n", statsPtr->currentExceptBytes, Percent(statsPtr->currentExceptBytes,statsPtr->currentByteCodeBytes), statsPtr->currentExceptBytes / numCurrentByteCodes); fprintf(stdout, "Auxiliary data %12.6g %8.1f%% %8.1f\n", statsPtr->currentAuxBytes, Percent(statsPtr->currentAuxBytes,statsPtr->currentByteCodeBytes), statsPtr->currentAuxBytes / numCurrentByteCodes); fprintf(stdout, "Command map %12.6g %8.1f%% %8.1f\n", statsPtr->currentCmdMapBytes, Percent(statsPtr->currentCmdMapBytes,statsPtr->currentByteCodeBytes), statsPtr->currentCmdMapBytes / numCurrentByteCodes); /* * Detailed literal statistics. */ fprintf(stdout, "\nLiteral string sizes:\n"); fprintf(stdout, " Up to length Percentage\n"); maxSizeDecade = 0; for (i = 31; i >= 0; i--) { if (statsPtr->literalCount[i] > 0) { maxSizeDecade = i; break; } } sum = 0; for (i = 0; i <= maxSizeDecade; i++) { decadeHigh = (1 << (i+1)) - 1; sum += statsPtr->literalCount[i]; fprintf(stdout, " %10d %8.0f%%\n", decadeHigh, Percent(sum, statsPtr->numLiteralsCreated)); } litTableStats = TclLiteralStats(globalTablePtr); fprintf(stdout, "\nCurrent literal table statistics:\n%s\n", litTableStats); ckfree((char *) litTableStats); /* * Source and ByteCode size distributions. */ fprintf(stdout, "\nSource sizes:\n"); fprintf(stdout, " Up to size Percentage\n"); minSizeDecade = maxSizeDecade = 0; for (i = 0; i < 31; i++) { if (statsPtr->srcCount[i] > 0) { minSizeDecade = i; break; } } for (i = 31; i >= 0; i--) { if (statsPtr->srcCount[i] > 0) { maxSizeDecade = i; break; } } sum = 0; for (i = minSizeDecade; i <= maxSizeDecade; i++) { decadeHigh = (1 << (i+1)) - 1; sum += statsPtr->srcCount[i]; fprintf(stdout, " %10d %8.0f%%\n", decadeHigh, Percent(sum, statsPtr->numCompilations)); } fprintf(stdout, "\nByteCode sizes:\n"); fprintf(stdout, " Up to size Percentage\n"); minSizeDecade = maxSizeDecade = 0; for (i = 0; i < 31; i++) { if (statsPtr->byteCodeCount[i] > 0) { minSizeDecade = i; break; } } for (i = 31; i >= 0; i--) { if (statsPtr->byteCodeCount[i] > 0) { maxSizeDecade = i; break; } } sum = 0; for (i = minSizeDecade; i <= maxSizeDecade; i++) { decadeHigh = (1 << (i+1)) - 1; sum += statsPtr->byteCodeCount[i]; fprintf(stdout, " %10d %8.0f%%\n", decadeHigh, Percent(sum, statsPtr->numCompilations)); } fprintf(stdout, "\nByteCode longevity (excludes Current ByteCodes):\n"); fprintf(stdout, " Up to ms Percentage\n"); minSizeDecade = maxSizeDecade = 0; for (i = 0; i < 31; i++) { if (statsPtr->lifetimeCount[i] > 0) { minSizeDecade = i; break; } } for (i = 31; i >= 0; i--) { if (statsPtr->lifetimeCount[i] > 0) { maxSizeDecade = i; break; } } sum = 0; for (i = minSizeDecade; i <= maxSizeDecade; i++) { decadeHigh = (1 << (i+1)) - 1; sum += statsPtr->lifetimeCount[i]; fprintf(stdout, " %12.3f %8.0f%%\n", decadeHigh/1000.0, Percent(sum, statsPtr->numByteCodesFreed)); } /* * Instruction counts. */ fprintf(stdout, "\nInstruction counts:\n"); for (i = 0; i <= LAST_INST_OPCODE; i++) { if (statsPtr->instructionCount[i] == 0) { fprintf(stdout, "%20s %8ld %6.1f%%\n", tclInstructionTable[i].name, statsPtr->instructionCount[i], Percent(statsPtr->instructionCount[i], numInstructions)); } } fprintf(stdout, "\nInstructions NEVER executed:\n"); for (i = 0; i <= LAST_INST_OPCODE; i++) { if (statsPtr->instructionCount[i] == 0) { fprintf(stdout, "%20s\n", tclInstructionTable[i].name); } } #ifdef TCL_MEM_DEBUG fprintf(stdout, "\nHeap Statistics:\n"); TclDumpMemoryInfo(stdout); #endif fprintf(stdout, "\n----------------------------------------------------------------\n"); return TCL_OK; } #endif /* TCL_COMPILE_STATS */  #ifdef TCL_COMPILE_DEBUG /* *---------------------------------------------------------------------- * * StringForResultCode -- * * Procedure that returns a human-readable string representing a Tcl * result code such as TCL_ERROR. * * Results: * If the result code is one of the standard Tcl return codes, the result * is a string representing that code such as "TCL_ERROR". Otherwise, the * result string is that code formatted as a sequence of decimal digit * characters. Note that the resulting string must not be modified by the * caller. * * Side effects: * None. * *---------------------------------------------------------------------- */ static const char * StringForResultCode( int result) /* The Tcl result code for which to generate a * string. */ { static char buf[TCL_INTEGER_SPACE]; if ((result >= TCL_OK) && (result <= TCL_CONTINUE)) { return resultStrings[result]; } TclFormatInt(buf, result); return buf; } #endif /* TCL_COMPILE_DEBUG */  /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 * End: */

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