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freeze registers in CallEvent::compile to ensure they are not used as temporaries by the assmebler

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This commit is contained in:
Joel Dice 2009-04-25 20:07:47 -06:00
parent 0245a94ab8
commit 630fde86f7
1 changed files with 28 additions and 5 deletions
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33
src/compiler.cpp
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@ -2465,10 +2465,25 @@ class CallEvent: public Event {
assert(c, framePointerSurrogate == 0
or framePointerSurrogate->source->type(c) == RegisterOperand);
int ras = (returnAddressSurrogate ? static_cast<RegisterSite*>
(returnAddressSurrogate->source)->number : NoRegister);
int fps = (framePointerSurrogate ? static_cast<RegisterSite*>
(framePointerSurrogate->source)->number : NoRegister);
int ras;
if (returnAddressSurrogate) {
returnAddressSurrogate->source->freeze(c, returnAddressSurrogate);
ras = static_cast<RegisterSite*>
(returnAddressSurrogate->source)->number;
} else {
ras = NoRegister;
}
int fps;
if (framePointerSurrogate) {
framePointerSurrogate->source->freeze(c, framePointerSurrogate);
fps = static_cast<RegisterSite*>
(framePointerSurrogate->source)->number;
} else {
fps = NoRegister;
}
int offset
= static_cast<int>(c->arch->argumentFootprint(stackArgumentFootprint))
@ -2488,7 +2503,15 @@ class CallEvent: public Event {
padIndex, padding);
}
if ((flags & Compiler::TailJump) == 0) {
if (flags & Compiler::TailJump) {
if (returnAddressSurrogate) {
returnAddressSurrogate->source->thaw(c, returnAddressSurrogate);
}
if (framePointerSurrogate) {
framePointerSurrogate->source->thaw(c, framePointerSurrogate);
}
} else {
unsigned footprint = c->arch->argumentFootprint(stackArgumentFootprint);
if (footprint > c->arch->stackAlignmentInWords()) {
Assembler::Register stack(c->arch->stack());