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A little bit of code support now

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This commit is contained in:
Michael Hansen 2009-07-26 10:07:13 +00:00
commit b89ae8b2ac
12 changed files with 556 additions and 28 deletions
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55
bytecode.cpp
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@ -1,5 +1,4 @@
#include "bytecode.h"
#include "data.h"
#include "numeric.h"
const char* Py1k::OpcodeNames[256] = {
@ -226,7 +225,7 @@ bool Py3k::IsCellArg(int opcode)
}
static void print_const(PycRef<PycObject> obj, PycModule* mod)
void print_const(PycRef<PycObject> obj, PycModule* mod)
{
switch (obj->type()) {
case PycObject::TYPE_STRING:
@ -347,39 +346,45 @@ static void print_const(PycRef<PycObject> obj, PycModule* mod)
}
}
void bc_next(PycBuffer& source, PycModule* mod, int& opcode, int& operand, int& pos)
{
opcode = source.getByte();
operand = 0;
bool haveExtArg = false;
pos += 1;
if ((mod->majorVer() == 2 && opcode == Py2k::EXTENDED_ARG) ||
(mod->majorVer() == 3 && opcode == Py3k::EXTENDED_ARG)) {
operand = source.get16() << 16;
opcode = source.getByte();
haveExtArg = true;
pos += 3;
}
if (opcode >= HAVE_ARG) {
// If we have an extended arg, we want to OR the lower part,
// else we want the whole thing (in case it's negative). We use
// the bool so that values between 0x8000 and 0xFFFF can be stored
// without becoming negative
if (haveExtArg)
operand |= (source.get16() & 0xFFFF);
else
operand = source.get16();
pos += 2;
}
}
void bc_disasm(PycRef<PycCode> code, PycModule* mod, int indent)
{
PycBuffer source(code->code()->value(), code->code()->length());
int opcode, operand;
int pos = 0;
while (!source.atEof()) {
for (int i=0; i<indent; i++)
printf(" ");
printf("%-7d ", pos); // Current bytecode position
int opcode = source.getByte();
int operand = 0;
bool haveExtArg = false;
pos += 1;
if ((mod->majorVer() == 2 && opcode == Py2k::EXTENDED_ARG) ||
(mod->majorVer() == 3 && opcode == Py3k::EXTENDED_ARG)) {
operand = source.get16() << 16;
opcode = source.getByte();
haveExtArg = true;
pos += 3;
}
if (opcode >= HAVE_ARG) {
// If we have an extended arg, we want to OR the lower part,
// else we want the whole thing (in case it's negative). We use
// the bool so that values between 0x8000 and 0xFFFF can be stored
// without becoming negative
if (haveExtArg)
operand |= (source.get16() & 0xFFFF);
else
operand = source.get16();
pos += 2;
}
bc_next(source, mod, opcode, operand, pos);
if (mod->majorVer() == 1) {
printf("%-24s", Py1k::OpcodeNames[opcode]);