Version 3.1.5
Change RegExp parsing to disallow /(*)/.
Added GDB JIT support for ARM.
Fixed several crash bugs.
Performance improvements on the IA32 platform.
git-svn-id: http://v8.googlecode.com/svn/trunk@6812 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index cd612b5..03f726c 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -448,6 +448,97 @@
}
+void MacroAssembler::Throw(Register value) {
+ // Adjust this code if not the case.
+ STATIC_ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize);
+
+ // eax must hold the exception.
+ if (!value.is(eax)) {
+ mov(eax, value);
+ }
+
+ // Drop the sp to the top of the handler.
+ ExternalReference handler_address(Top::k_handler_address);
+ mov(esp, Operand::StaticVariable(handler_address));
+
+ // Restore next handler and frame pointer, discard handler state.
+ STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
+ pop(Operand::StaticVariable(handler_address));
+ STATIC_ASSERT(StackHandlerConstants::kFPOffset == 1 * kPointerSize);
+ pop(ebp);
+ pop(edx); // Remove state.
+
+ // Before returning we restore the context from the frame pointer if
+ // not NULL. The frame pointer is NULL in the exception handler of
+ // a JS entry frame.
+ Set(esi, Immediate(0)); // Tentatively set context pointer to NULL.
+ NearLabel skip;
+ cmp(ebp, 0);
+ j(equal, &skip, not_taken);
+ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
+ bind(&skip);
+
+ STATIC_ASSERT(StackHandlerConstants::kPCOffset == 3 * kPointerSize);
+ ret(0);
+}
+
+
+void MacroAssembler::ThrowUncatchable(UncatchableExceptionType type,
+ Register value) {
+ // Adjust this code if not the case.
+ STATIC_ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize);
+
+ // eax must hold the exception.
+ if (!value.is(eax)) {
+ mov(eax, value);
+ }
+
+ // Drop sp to the top stack handler.
+ ExternalReference handler_address(Top::k_handler_address);
+ mov(esp, Operand::StaticVariable(handler_address));
+
+ // Unwind the handlers until the ENTRY handler is found.
+ NearLabel loop, done;
+ bind(&loop);
+ // Load the type of the current stack handler.
+ const int kStateOffset = StackHandlerConstants::kStateOffset;
+ cmp(Operand(esp, kStateOffset), Immediate(StackHandler::ENTRY));
+ j(equal, &done);
+ // Fetch the next handler in the list.
+ const int kNextOffset = StackHandlerConstants::kNextOffset;
+ mov(esp, Operand(esp, kNextOffset));
+ jmp(&loop);
+ bind(&done);
+
+ // Set the top handler address to next handler past the current ENTRY handler.
+ STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
+ pop(Operand::StaticVariable(handler_address));
+
+ if (type == OUT_OF_MEMORY) {
+ // Set external caught exception to false.
+ ExternalReference external_caught(Top::k_external_caught_exception_address);
+ mov(eax, false);
+ mov(Operand::StaticVariable(external_caught), eax);
+
+ // Set pending exception and eax to out of memory exception.
+ ExternalReference pending_exception(Top::k_pending_exception_address);
+ mov(eax, reinterpret_cast<int32_t>(Failure::OutOfMemoryException()));
+ mov(Operand::StaticVariable(pending_exception), eax);
+ }
+
+ // Clear the context pointer.
+ Set(esi, Immediate(0));
+
+ // Restore fp from handler and discard handler state.
+ STATIC_ASSERT(StackHandlerConstants::kFPOffset == 1 * kPointerSize);
+ pop(ebp);
+ pop(edx); // State.
+
+ STATIC_ASSERT(StackHandlerConstants::kPCOffset == 3 * kPointerSize);
+ ret(0);
+}
+
+
void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg,
Register scratch,
Label* miss) {