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Fix CALL_NON_FUNCTION.

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Using two flags to specify the state of targets:
1) FixupIsPCRelative specifies where to patch (relative to pc or at pc);
2) FixupUseCodeObject specifies what to patch (code object or start address).

Review URL: http://codereview.chromium.org/10233

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@727 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
feng@chromium.org 2008-11-10 22:53:19 +00:00
parent b14a2e4cb7
commit 3ccdce6d83
5 changed files with 28 additions and 9 deletions
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11
src/bootstrapper.cc
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@ -205,11 +205,20 @@ bool PendingFixups::Process(Handle<JSBuiltinsObject> builtins) {
Code* code = Code::cast(code_[i]);
Address pc = code->instruction_start() + pc_[i];
bool is_pc_relative = Bootstrapper::FixupFlagsIsPCRelative::decode(flags);
bool use_code_object = Bootstrapper::FixupFlagsUseCodeObject::decode(flags);
if (use_code_object) {
if (is_pc_relative) {
Assembler::set_target_address_at(pc, f->code()->instruction_start());
Assembler::set_target_address_at(
pc, reinterpret_cast<Address>(f->code()));
} else {
*reinterpret_cast<Object**>(pc) = f->code();
}
} else {
ASSERT(is_pc_relative);
Assembler::set_target_address_at(pc, f->code()->instruction_start());
}
LOG(StringEvent("resolved", name));
}
Clear();

3
src/bootstrapper.h
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@ -66,7 +66,8 @@ class Bootstrapper : public AllStatic {
// Encoding/decoding support for fixup flags.
class FixupFlagsIsPCRelative: public BitField<bool, 0, 1> {};
class FixupFlagsArgumentsCount: public BitField<uint32_t, 1, 32-1> {};
class FixupFlagsUseCodeObject: public BitField<bool, 1, 1> {};
class FixupFlagsArgumentsCount: public BitField<uint32_t, 2, 32-2> {};
};
}} // namespace v8::internal

5
src/codegen-arm.cc
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@ -4283,7 +4283,10 @@ void CallFunctionStub::Generate(MacroAssembler* masm) {
// Slow-case: Non-function called.
__ bind(&slow);
__ mov(r0, Operand(argc_)); // Setup the number of arguments.
__ InvokeBuiltin(Builtins::CALL_NON_FUNCTION, JUMP_JS);
__ mov(r2, Operand(0));
__ GetBuiltinEntry(r3, Builtins::CALL_NON_FUNCTION);
__ Jump(Handle<Code>(Builtins::builtin(Builtins::ArgumentsAdaptorTrampoline)),
RelocInfo::CODE_TARGET);
}

8
src/macro-assembler-arm.cc
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@ -818,7 +818,8 @@ void MacroAssembler::InvokeBuiltin(Builtins::JavaScript id,
int argc = Builtins::GetArgumentsCount(id);
uint32_t flags =
Bootstrapper::FixupFlagsArgumentsCount::encode(argc) |
Bootstrapper::FixupFlagsIsPCRelative::encode(true);
Bootstrapper::FixupFlagsIsPCRelative::encode(true) |
Bootstrapper::FixupFlagsUseCodeObject::encode(false);
Unresolved entry = { pc_offset() - sizeof(Instr), flags, name };
unresolved_.Add(entry);
}
@ -835,10 +836,13 @@ void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) {
int argc = Builtins::GetArgumentsCount(id);
uint32_t flags =
Bootstrapper::FixupFlagsArgumentsCount::encode(argc) |
Bootstrapper::FixupFlagsIsPCRelative::encode(true);
Bootstrapper::FixupFlagsIsPCRelative::encode(true) |
Bootstrapper::FixupFlagsUseCodeObject::encode(true);
Unresolved entry = { pc_offset() - sizeof(Instr), flags, name };
unresolved_.Add(entry);
}
add(target, target, Operand(Code::kHeaderSize - kHeapObjectTag));
}

6
src/macro-assembler-ia32.cc
View File

@ -873,7 +873,8 @@ void MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, InvokeFlag flag) {
if (!resolved) {
uint32_t flags =
Bootstrapper::FixupFlagsArgumentsCount::encode(argc) |
Bootstrapper::FixupFlagsIsPCRelative::encode(true);
Bootstrapper::FixupFlagsIsPCRelative::encode(true) |
Bootstrapper::FixupFlagsUseCodeObject::encode(false);
Unresolved entry = { pc_offset() - sizeof(int32_t), flags, name };
unresolved_.Add(entry);
}
@ -891,7 +892,8 @@ void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) {
if (!resolved) {
uint32_t flags =
Bootstrapper::FixupFlagsArgumentsCount::encode(argc) |
Bootstrapper::FixupFlagsIsPCRelative::encode(false);
Bootstrapper::FixupFlagsIsPCRelative::encode(false) |
Bootstrapper::FixupFlagsUseCodeObject::encode(true);
Unresolved entry = { pc_offset() - sizeof(int32_t), flags, name };
unresolved_.Add(entry);
}