Improved performance of unary addition by avoiding runtime calls.
Fixed the handling of '>' and '<=' to use right-to-left conversion and left-to-right evaluation as specified by ECMA-262.
Fixed a branch elimination bug on the ARM platform where incorrect code was generated because of overly aggressive branch elimination.
Improved performance of code that repeatedly assigns the same function to the same property of different objects with the same map.
Untangled DEBUG and ENABLE_DISASSEMBLER defines. The disassembler no longer expects DEBUG to be defined.
Added platform-nullos.cc to serve as the basis for new platform implementations.
git-svn-id: http://v8.googlecode.com/svn/trunk@9 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/macro-assembler-arm.cc b/src/macro-assembler-arm.cc
index 16003c0..bf81510 100644
--- a/src/macro-assembler-arm.cc
+++ b/src/macro-assembler-arm.cc
@@ -364,6 +364,95 @@
}
+void MacroAssembler::InvokePrologue(const ParameterCount& expected,
+ const ParameterCount& actual,
+ Handle<Code> code_constant,
+ Register code_reg,
+ Label* done,
+ InvokeFlag flag) {
+ if (actual.is_immediate()) {
+ mov(r0, Operand(actual.immediate())); // Push the number of arguments.
+ } else {
+ if (!actual.reg().is(r0)) {
+ mov(r0, Operand(actual.reg()));
+ }
+ }
+}
+
+
+void MacroAssembler::InvokeCode(Register code,
+ const ParameterCount& expected,
+ const ParameterCount& actual,
+ InvokeFlag flag) {
+ Label done;
+
+ InvokePrologue(expected, actual, Handle<Code>::null(), code, &done, flag);
+ if (flag == CALL_FUNCTION) {
+ Call(code);
+ } else {
+ ASSERT(flag == JUMP_FUNCTION);
+ Jump(code);
+ }
+
+ // Continue here if InvokePrologue does handle the invocation due to
+ // mismatched parameter counts.
+ bind(&done);
+}
+
+
+void MacroAssembler::InvokeCode(Handle<Code> code,
+ const ParameterCount& expected,
+ const ParameterCount& actual,
+ RelocMode rmode,
+ InvokeFlag flag) {
+ Label done;
+
+ InvokePrologue(expected, actual, code, no_reg, &done, flag);
+ if (flag == CALL_FUNCTION) {
+ Call(code, rmode);
+ } else {
+ Jump(code, rmode);
+ }
+
+ // Continue here if InvokePrologue does handle the invocation due to
+ // mismatched parameter counts.
+ bind(&done);
+}
+
+
+void MacroAssembler::InvokeFunction(Register fun,
+ const ParameterCount& actual,
+ InvokeFlag flag) {
+ // Contract with called JS functions requires that function is passed in r1.
+ ASSERT(fun.is(r1));
+
+ Register code_reg = r3;
+ Register expected_reg = r2;
+
+ // Make sure that the code and expected registers do not collide with the
+ // actual register being passed in.
+ if (actual.is_reg()) {
+ if (actual.reg().is(code_reg)) {
+ code_reg = r4;
+ } else if (actual.reg().is(expected_reg)) {
+ expected_reg = r4;
+ }
+ }
+
+ ldr(code_reg, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
+ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset));
+ ldr(expected_reg,
+ FieldMemOperand(code_reg,
+ SharedFunctionInfo::kFormalParameterCountOffset));
+ ldr(code_reg,
+ MemOperand(code_reg, SharedFunctionInfo::kCodeOffset - kHeapObjectTag));
+ add(code_reg, code_reg, Operand(Code::kHeaderSize - kHeapObjectTag));
+
+ ParameterCount expected(expected_reg);
+ InvokeCode(code_reg, expected, actual, flag);
+}
+
+
void MacroAssembler::SaveRegistersToMemory(RegList regs) {
ASSERT((regs & ~kJSCallerSaved) == 0);
// Copy the content of registers to memory location.