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Unified Diff: src/arm/code-stubs-arm.cc

Issue 10704189: Revert 12069: Implements a new API to set a function entry hook for profiling (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 8 years, 5 months ago
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Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index abd55ad7889a5fa098f8ccad0e198dd14f886708..169a032fb030c242448f4d491174348cc892a5ad 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -7513,63 +7513,6 @@ void StoreArrayLiteralElementStub::Generate(MacroAssembler* masm) {
__ Ret();
}
-
-void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) {
- if (entry_hook_ != NULL) {
- ProfileEntryHookStub stub;
- __ push(lr);
- __ CallStub(&stub);
- __ pop(lr);
- }
-}
-
-
-void ProfileEntryHookStub::Generate(MacroAssembler* masm) {
- // The entry hook is a "push lr" instruction, followed by a call.
- const int32_t kReturnAddressDistanceFromFunctionStart =
- Assembler::kCallTargetAddressOffset + Assembler::kInstrSize;
-
- // Save live volatile registers.
- __ Push(lr, r5, r1);
- const int32_t kNumSavedRegs = 3;
-
- // Compute the function's address for the first argument.
- __ sub(r0, lr, Operand(kReturnAddressDistanceFromFunctionStart));
-
- // The caller's return address is above the saved temporaries.
- // Grab that for the second argument to the hook.
- __ add(r1, sp, Operand(kNumSavedRegs * kPointerSize));
-
- // Align the stack if necessary.
- int frame_alignment = masm->ActivationFrameAlignment();
- if (frame_alignment > kPointerSize) {
- __ mov(r5, sp);
- ASSERT(IsPowerOf2(frame_alignment));
- __ and_(sp, sp, Operand(-frame_alignment));
- }
-
-#if defined(V8_HOST_ARCH_ARM)
- __ mov(ip, Operand(reinterpret_cast<int32_t>(&entry_hook_)));
- __ ldr(ip, MemOperand(ip));
-#else
- // Under the simulator we need to indirect the entry hook through a
- // trampoline function at a known address.
- ApiFunction dispatcher(reinterpret_cast<Address>(EntryHookTrampoline));
- __ mov(ip, Operand(ExternalReference(&dispatcher,
- ExternalReference::BUILTIN_CALL,
- masm->isolate())));
-#endif
- __ Call(ip);
-
- // Restore the stack pointer if needed.
- if (frame_alignment > kPointerSize) {
- __ mov(sp, r5);
- }
-
- __ Pop(lr, r5, r1);
- __ Ret();
-}
-
#undef __
} } // namespace v8::internal
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