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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
#ifndef jit_x86_SharedICHelpers_x86_inl_h
#define jit_x86_SharedICHelpers_x86_inl_h
#include "jit/BaselineFrame.h"
#include "jit/SharedICHelpers.h"
#include "jit/MacroAssembler-inl.h"
namespace js {
namespace jit {
inline void EmitBaselineTailCallVM(TrampolinePtr target, MacroAssembler& masm,
uint32_t argSize) {
#ifdef DEBUG
// We assume during this that R0 and R1 have been pushed.
// Store frame size without VMFunction arguments for debug assertions.
masm.movl(FramePointer, eax);
masm.subl(StackPointer, eax);
masm.subl(Imm32(argSize), eax);
Address frameSizeAddr(FramePointer,
masm.store32(eax, frameSizeAddr);
// Push frame descriptor and perform the tail call.
inline void EmitBaselineCallVM(TrampolinePtr target, MacroAssembler& masm) {
inline void EmitBaselineEnterStubFrame(MacroAssembler& masm, Register scratch) {
#ifdef DEBUG
// Compute frame size. Because the return address is still on the stack,
// this is:
// FramePointer
// - StackPointer
// - sizeof(return address)
masm.movl(FramePointer, scratch);
masm.subl(StackPointer, scratch);
masm.subl(Imm32(sizeof(void*)), scratch); // Return address.
Address frameSizeAddr(FramePointer,
masm.store32(scratch, frameSizeAddr);
// Push the return address that's currently on top of the stack.
masm.Push(Operand(StackPointer, 0));
// Replace the original return address with the frame descriptor.
Address(StackPointer, sizeof(uintptr_t)));
// Save old frame pointer, stack pointer and stub reg.
masm.Push(FramePointer);, FramePointer);
} // namespace jit
} // namespace js
#endif /* jit_x86_SharedICHelpers_x86_inl_h */