Version 2.0.3
Optimized handling and adding of strings, for-in and Array.join.
Heap serialization is now non-destructive.
Improved profiler support with information on time spend in C++ callbacks registered through the API.
Added commands to the debugger protocol for starting/stopping profiling.
Enabled the non-optimizing compiler for top-level code.
Changed the API to only allow strings to be set as data objects on Contexts and scripts to avoid potentially keeping global objects around for too long (issue 528).
OpenBSD support patch by Peter Valchev <pvalchev@gmail.com>.
Fixed bugs.
git-svn-id: http://v8.googlecode.com/svn/trunk@3423 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 9dea616..7115791 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -67,6 +67,12 @@
}
+void MacroAssembler::StackLimitCheck(Label* on_stack_overflow) {
+ CompareRoot(rsp, Heap::kStackLimitRootIndex);
+ j(below, on_stack_overflow);
+}
+
+
static void RecordWriteHelper(MacroAssembler* masm,
Register object,
Register addr,
@@ -282,6 +288,9 @@
RecordComment(msg);
}
#endif
+ // Disable stub call restrictions to always allow calls to abort.
+ set_allow_stub_calls(true);
+
push(rax);
movq(kScratchRegister, p0, RelocInfo::NONE);
push(kScratchRegister);
@@ -291,6 +300,7 @@
push(kScratchRegister);
CallRuntime(Runtime::kAbort, 2);
// will not return here
+ int3();
}
@@ -2088,6 +2098,11 @@
void MacroAssembler::UpdateAllocationTopHelper(Register result_end,
Register scratch) {
+ if (FLAG_debug_code) {
+ testq(result_end, Immediate(kObjectAlignmentMask));
+ Check(zero, "Unaligned allocation in new space");
+ }
+
ExternalReference new_space_allocation_top =
ExternalReference::new_space_allocation_top_address();
@@ -2229,6 +2244,25 @@
}
+void MacroAssembler::LoadContext(Register dst, int context_chain_length) {
+ if (context_chain_length > 0) {
+ // Move up the chain of contexts to the context containing the slot.
+ movq(dst, Operand(rsi, Context::SlotOffset(Context::CLOSURE_INDEX)));
+ // Load the function context (which is the incoming, outer context).
+ movq(rax, FieldOperand(rax, JSFunction::kContextOffset));
+ for (int i = 1; i < context_chain_length; i++) {
+ movq(dst, Operand(dst, Context::SlotOffset(Context::CLOSURE_INDEX)));
+ movq(dst, FieldOperand(dst, JSFunction::kContextOffset));
+ }
+ // The context may be an intermediate context, not a function context.
+ movq(dst, Operand(dst, Context::SlotOffset(Context::FCONTEXT_INDEX)));
+ } else { // context is the current function context.
+ // The context may be an intermediate context, not a function context.
+ movq(dst, Operand(rsi, Context::SlotOffset(Context::FCONTEXT_INDEX)));
+ }
+}
+
+
CodePatcher::CodePatcher(byte* address, int size)
: address_(address), size_(size), masm_(address, size + Assembler::kGap) {
// Create a new macro assembler pointing to the address of the code to patch.