diff options
Diffstat (limited to 'generic/tclAssembly.c')
| -rw-r--r-- | generic/tclAssembly.c | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/generic/tclAssembly.c b/generic/tclAssembly.c index 44cddba..254d344 100644 --- a/generic/tclAssembly.c +++ b/generic/tclAssembly.c @@ -246,6 +246,8 @@ static void BBEmitInstInt4(AssemblyEnv* assemEnvPtr, int tblIdx, int opnd, int count); static void BBEmitInst1or4(AssemblyEnv* assemEnvPtr, int tblIdx, int param, int count); +static void BBEmitInvoke1or4(AssemblyEnv* assemEnvPtr, int tblIdx, + int param, int count); static void BBEmitOpcode(AssemblyEnv* assemEnvPtr, int tblIdx, int count); static int BuildExceptionRanges(AssemblyEnv* assemEnvPtr); @@ -683,10 +685,13 @@ BBEmitInstInt4( /* *----------------------------------------------------------------------------- * - * BBEmitInst1or4 -- + * BBEmitInst1or4, BBEmitInvoke1or4 -- * * Emits a 1- or 4-byte operation according to the magnitude of the - * operand + * operand. The Invoke variant generates wrapping stack-balance + * management if necessary (which is not normally required in assembled + * code, as loop exception ranges, expansions, breaks and continues can't + * be issued currently). * *----------------------------------------------------------------------------- */ @@ -718,6 +723,29 @@ BBEmitInst1or4( TclUpdateAtCmdStart(op, envPtr); BBUpdateStackReqs(bbPtr, tblIdx, count); } + +static void +BBEmitInvoke1or4( + AssemblyEnv* assemEnvPtr, /* Assembly environment */ + int tblIdx, /* Index in TalInstructionTable of op */ + int param, /* Variable-length parameter */ + int count) /* Arity if variadic */ +{ + CompileEnv* envPtr = assemEnvPtr->envPtr; + /* Compilation environment */ + BasicBlock* bbPtr = assemEnvPtr->curr_bb; + /* Current basic block */ + int op = TalInstructionTable[tblIdx].tclInstCode; + + if (param <= 0xff) { + op >>= 8; + } else { + op &= 0xff; + } + TclEmitInvoke(envPtr, op, param); + TclUpdateAtCmdStart(op, envPtr); + BBUpdateStackReqs(bbPtr, tblIdx, count); +} /* *----------------------------------------------------------------------------- @@ -1454,7 +1482,7 @@ AssembleOneLine( goto cleanup; } - BBEmitInst1or4(assemEnvPtr, tblIdx, opnd, opnd); + BBEmitInvoke1or4(assemEnvPtr, tblIdx, opnd, opnd); break; case ASSEM_JUMP: |