summaryrefslogtreecommitdiff
path: root/deps/v8/src/x64/deoptimizer-x64.cc
diff options
context:
space:
mode:
Diffstat (limited to 'deps/v8/src/x64/deoptimizer-x64.cc')
-rw-r--r--deps/v8/src/x64/deoptimizer-x64.cc86
1 files changed, 59 insertions, 27 deletions
diff --git a/deps/v8/src/x64/deoptimizer-x64.cc b/deps/v8/src/x64/deoptimizer-x64.cc
index aee8be6e1..4bc644def 100644
--- a/deps/v8/src/x64/deoptimizer-x64.cc
+++ b/deps/v8/src/x64/deoptimizer-x64.cc
@@ -51,6 +51,26 @@ void Deoptimizer::PatchCodeForDeoptimization(Isolate* isolate, Code* code) {
// code patching below, and is not needed any more.
code->InvalidateRelocation();
+ if (FLAG_zap_code_space) {
+ // Fail hard and early if we enter this code object again.
+ byte* pointer = code->FindCodeAgeSequence();
+ if (pointer != NULL) {
+ pointer += kNoCodeAgeSequenceLength;
+ } else {
+ pointer = code->instruction_start();
+ }
+ CodePatcher patcher(pointer, 1);
+ patcher.masm()->int3();
+
+ DeoptimizationInputData* data =
+ DeoptimizationInputData::cast(code->deoptimization_data());
+ int osr_offset = data->OsrPcOffset()->value();
+ if (osr_offset > 0) {
+ CodePatcher osr_patcher(code->instruction_start() + osr_offset, 1);
+ osr_patcher.masm()->int3();
+ }
+ }
+
// For each LLazyBailout instruction insert a absolute call to the
// corresponding deoptimization entry, or a short call to an absolute
// jump if space is short. The absolute jumps are put in a table just
@@ -63,6 +83,12 @@ void Deoptimizer::PatchCodeForDeoptimization(Isolate* isolate, Code* code) {
#endif
DeoptimizationInputData* deopt_data =
DeoptimizationInputData::cast(code->deoptimization_data());
+ SharedFunctionInfo* shared =
+ SharedFunctionInfo::cast(deopt_data->SharedFunctionInfo());
+ shared->EvictFromOptimizedCodeMap(code, "deoptimized code");
+ deopt_data->SetSharedFunctionInfo(Smi::FromInt(0));
+ // For each LLazyBailout instruction insert a call to the corresponding
+ // deoptimization entry.
for (int i = 0; i < deopt_data->DeoptCount(); i++) {
if (deopt_data->Pc(i)->value() == -1) continue;
// Position where Call will be patched in.
@@ -141,7 +167,7 @@ void Deoptimizer::EntryGenerator::Generate() {
const int kDoubleRegsSize = kDoubleSize *
XMMRegister::NumAllocatableRegisters();
- __ subq(rsp, Immediate(kDoubleRegsSize));
+ __ subp(rsp, Immediate(kDoubleRegsSize));
for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) {
XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i);
@@ -153,7 +179,7 @@ void Deoptimizer::EntryGenerator::Generate() {
// to restore all later.
for (int i = 0; i < kNumberOfRegisters; i++) {
Register r = Register::from_code(i);
- __ push(r);
+ __ pushq(r);
}
const int kSavedRegistersAreaSize = kNumberOfRegisters * kRegisterSize +
@@ -170,11 +196,11 @@ void Deoptimizer::EntryGenerator::Generate() {
// Get the address of the location in the code object
// and compute the fp-to-sp delta in register arg5.
__ movp(arg_reg_4, Operand(rsp, kSavedRegistersAreaSize + 1 * kRegisterSize));
- __ lea(arg5, Operand(rsp, kSavedRegistersAreaSize + 1 * kRegisterSize +
+ __ leap(arg5, Operand(rsp, kSavedRegistersAreaSize + 1 * kRegisterSize +
kPCOnStackSize));
- __ subq(arg5, rbp);
- __ neg(arg5);
+ __ subp(arg5, rbp);
+ __ negp(arg5);
// Allocate a new deoptimizer object.
__ PrepareCallCFunction(6);
@@ -204,40 +230,40 @@ void Deoptimizer::EntryGenerator::Generate() {
// Fill in the input registers.
for (int i = kNumberOfRegisters -1; i >= 0; i--) {
int offset = (i * kPointerSize) + FrameDescription::registers_offset();
- __ pop(Operand(rbx, offset));
+ __ Pop(Operand(rbx, offset));
}
// Fill in the double input registers.
int double_regs_offset = FrameDescription::double_registers_offset();
for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); i++) {
int dst_offset = i * kDoubleSize + double_regs_offset;
- __ pop(Operand(rbx, dst_offset));
+ __ popq(Operand(rbx, dst_offset));
}
// Remove the bailout id and return address from the stack.
- __ addq(rsp, Immediate(1 * kRegisterSize + kPCOnStackSize));
+ __ addp(rsp, Immediate(1 * kRegisterSize + kPCOnStackSize));
// Compute a pointer to the unwinding limit in register rcx; that is
// the first stack slot not part of the input frame.
__ movp(rcx, Operand(rbx, FrameDescription::frame_size_offset()));
- __ addq(rcx, rsp);
+ __ addp(rcx, rsp);
// Unwind the stack down to - but not including - the unwinding
// limit and copy the contents of the activation frame to the input
// frame description.
- __ lea(rdx, Operand(rbx, FrameDescription::frame_content_offset()));
+ __ leap(rdx, Operand(rbx, FrameDescription::frame_content_offset()));
Label pop_loop_header;
__ jmp(&pop_loop_header);
Label pop_loop;
__ bind(&pop_loop);
- __ pop(Operand(rdx, 0));
- __ addq(rdx, Immediate(sizeof(intptr_t)));
+ __ Pop(Operand(rdx, 0));
+ __ addp(rdx, Immediate(sizeof(intptr_t)));
__ bind(&pop_loop_header);
- __ cmpq(rcx, rsp);
+ __ cmpp(rcx, rsp);
__ j(not_equal, &pop_loop);
// Compute the output frame in the deoptimizer.
- __ push(rax);
+ __ pushq(rax);
__ PrepareCallCFunction(2);
__ movp(arg_reg_1, rax);
__ LoadAddress(arg_reg_2, ExternalReference::isolate_address(isolate()));
@@ -246,7 +272,7 @@ void Deoptimizer::EntryGenerator::Generate() {
__ CallCFunction(
ExternalReference::compute_output_frames_function(isolate()), 2);
}
- __ pop(rax);
+ __ popq(rax);
// Replace the current frame with the output frames.
Label outer_push_loop, inner_push_loop,
@@ -255,7 +281,7 @@ void Deoptimizer::EntryGenerator::Generate() {
// last FrameDescription**.
__ movl(rdx, Operand(rax, Deoptimizer::output_count_offset()));
__ movp(rax, Operand(rax, Deoptimizer::output_offset()));
- __ lea(rdx, Operand(rax, rdx, times_pointer_size, 0));
+ __ leap(rdx, Operand(rax, rdx, times_pointer_size, 0));
__ jmp(&outer_loop_header);
__ bind(&outer_push_loop);
// Inner loop state: rbx = current FrameDescription*, rcx = loop index.
@@ -263,14 +289,14 @@ void Deoptimizer::EntryGenerator::Generate() {
__ movp(rcx, Operand(rbx, FrameDescription::frame_size_offset()));
__ jmp(&inner_loop_header);
__ bind(&inner_push_loop);
- __ subq(rcx, Immediate(sizeof(intptr_t)));
- __ push(Operand(rbx, rcx, times_1, FrameDescription::frame_content_offset()));
+ __ subp(rcx, Immediate(sizeof(intptr_t)));
+ __ Push(Operand(rbx, rcx, times_1, FrameDescription::frame_content_offset()));
__ bind(&inner_loop_header);
- __ testq(rcx, rcx);
+ __ testp(rcx, rcx);
__ j(not_zero, &inner_push_loop);
- __ addq(rax, Immediate(kPointerSize));
+ __ addp(rax, Immediate(kPointerSize));
__ bind(&outer_loop_header);
- __ cmpq(rax, rdx);
+ __ cmpp(rax, rdx);
__ j(below, &outer_push_loop);
for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) {
@@ -280,14 +306,14 @@ void Deoptimizer::EntryGenerator::Generate() {
}
// Push state, pc, and continuation from the last output frame.
- __ push(Operand(rbx, FrameDescription::state_offset()));
- __ push(Operand(rbx, FrameDescription::pc_offset()));
- __ push(Operand(rbx, FrameDescription::continuation_offset()));
+ __ Push(Operand(rbx, FrameDescription::state_offset()));
+ __ Push(Operand(rbx, FrameDescription::pc_offset()));
+ __ Push(Operand(rbx, FrameDescription::continuation_offset()));
// Push the registers from the last output frame.
for (int i = 0; i < kNumberOfRegisters; i++) {
int offset = (i * kPointerSize) + FrameDescription::registers_offset();
- __ push(Operand(rbx, offset));
+ __ Push(Operand(rbx, offset));
}
// Restore the registers from the stack.
@@ -299,7 +325,7 @@ void Deoptimizer::EntryGenerator::Generate() {
ASSERT(i > 0);
r = Register::from_code(i - 1);
}
- __ pop(r);
+ __ popq(r);
}
// Set up the roots register.
@@ -317,7 +343,7 @@ void Deoptimizer::TableEntryGenerator::GeneratePrologue() {
for (int i = 0; i < count(); i++) {
int start = masm()->pc_offset();
USE(start);
- __ push_imm32(i);
+ __ pushq_imm32(i);
__ jmp(&done);
ASSERT(masm()->pc_offset() - start == table_entry_size_);
}
@@ -335,6 +361,12 @@ void FrameDescription::SetCallerFp(unsigned offset, intptr_t value) {
}
+void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) {
+ // No out-of-line constant pool support.
+ UNREACHABLE();
+}
+
+
#undef __
View Lorry Controller Status