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Bug 498504 - lirasm - constant jumps produce assertions. intermediates treated as labels. p=paritosh,r=me.

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This commit is contained in:
Jason Orendorff 2009-06-16 13:05:59 -05:00
parent 0ce2e91c33
commit aae770b100
1 changed files with 33 additions and 18 deletions
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51
js/src/lirasm/lirasm.cpp
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@ -88,6 +88,10 @@ read_and_tokenize_line(istream &in, vector<string> &toks, size_t &linenum)
while((start = line.find_first_not_of(tok_sep, end)) != string::npos &&
(end = line.find_first_of(tok_sep, start)) != string::npos) {
string ss = line.substr(start, (end-start));
if (ss == "=") {
toks[toks.size()-1] += ss;
continue;
}
toks.push_back(ss);
}
}
@ -222,7 +226,7 @@ assemble_load(LOpcode opcode,
if (toks[1].find("0x") == 0 ||
toks[1].find("0x") == 0 ||
toks[1].find_first_of("0123456789") == 0) {
return lir->insLoad(opcode,
return lir->insLoad(opcode,
ref(labels, toks[0], line),
imm(toks[1]));
} else {
@ -344,10 +348,11 @@ extract_any_label(string &op,
vector<string> &toks,
string &lab,
map<string,LIns*> const &labels,
size_t line)
size_t line,
char lab_delim)
{
if (op.size() > 1 &&
op[op.size()-1] == ':' &&
op[op.size()-1] == lab_delim &&
!toks.empty()) {
lab = op;
@ -395,8 +400,21 @@ assemble(istream &in,
string op = pop_front(toks);
string lab;
LIns *ins = NULL;
extract_any_label(op, toks, lab, labels, line, ':');
extract_any_label(op, toks, lab, labels, line);
/* Save label and do any back-patching of deferred forward-jumps. */
if (!lab.empty()) {
ins = lir->ins0(LIR_label);
typedef multimap<string,LIns*> mulmap;
typedef mulmap::const_iterator ci;
pair<ci,ci> range = fwd_jumps.equal_range(lab);
for (ci i = range.first; i != range.second; ++i) {
i->second->setTarget(ins);
}
fwd_jumps.erase(lab);
}
extract_any_label(op, toks, lab, labels, line, '=');
if (op_map.find(op) == op_map.end())
bad("unknown instruction '" + op + "'", line);
@ -404,7 +422,6 @@ assemble(istream &in,
pair<LOpcode,size_t> entry = op_map[op];
LOpcode opcode = entry.first;
size_t opcount = entry.second;
LIns *ins = NULL;
switch (opcode) {
// A few special opcode cases.
@ -482,18 +499,8 @@ assemble(istream &in,
}
assert(ins);
// Save label and do any back-patching of deferred forward-jumps.
if (!lab.empty()) {
if (!lab.empty())
labels.insert(make_pair(lab, ins));
typedef multimap<string,LIns*> mulmap;
typedef mulmap::const_iterator ci;
pair<ci,ci> range = fwd_jumps.equal_range(lab);
for (ci i = range.first; i != range.second; ++i) {
i->second->setTarget(ins);
}
fwd_jumps.erase(lab);
}
}
if (lirbuf->outOMem()) {
cerr << "lirbuf out of memory" << endl;
@ -598,10 +605,11 @@ main(int argc, char **argv)
avmplus::AvmCore::config.sse2 =
has_flag(args, "--sse");
#endif
bool execute = has_flag(args, "--execute");
if (args.empty()) {
#if defined NANOJIT_IA32
cerr << "usage: " << prog << " [--sse] <filename>" << endl;
cerr << "usage: " << prog << " [--sse] [--execute] <filename>" << endl;
#else
cerr << "usage: " << prog << " <filename>" << endl;
#endif
@ -666,7 +674,14 @@ main(int argc, char **argv)
exit(1);
}
dump_srecords(cout, frag);
if (execute) {
typedef JS_FASTCALL int32_t (*RetInt)();
RetInt f1;
f1 = reinterpret_cast<RetInt>(frag->code());
cout << "Output is: " << f1() << endl;
} else {
dump_srecords(cout, frag);
}
frag->releaseCode(fragmento);
delete frag;