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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 */
#include "jit/x86-shared/AssemblerBuffer-x86-shared.h"
#include "mozilla/Sprintf.h"
using namespace js;
using namespace jit;
bool x86_shared::AssemblerBuffer::swap(
Vector<uint8_t, 0, SystemAllocPolicy>& bytes) {
// For now, specialize to the one use case.
if (m_buffer.empty()) {
if (bytes.capacity() > m_buffer.capacity()) {
size_t newCapacity = bytes.capacity();
uint8_t* newBuffer = bytes.extractRawBuffer();
m_buffer.replaceRawBuffer((unsigned char*)newBuffer, 0, newCapacity);
return true;
size_t newLength = m_buffer.length();
size_t newCapacity = m_buffer.capacity();
unsigned char* newBuffer = m_buffer.extractRawBuffer();
// NB: extractRawBuffer() only returns null if the Vector is using
// inline storage and thus a malloc would be needed. In this case,
// just make a simple copy.
if (!newBuffer) {
return bytes.append(m_buffer.begin(), m_buffer.end());
bytes.replaceRawBuffer((uint8_t*)newBuffer, newLength, newCapacity);
return true;
void js::jit::GenericAssembler::spew(const char* fmt, va_list va) {
// Buffer to hold the formatted string. Note that this may contain
// '%' characters, so do not pass it directly to printf functions.
char buf[200];
int i = VsprintfLiteral(buf, fmt, va);
if (i > -1) {
if (printer) {
printer->printf("%s\n", buf);
js::jit::JitSpew(js::jit::JitSpew_Codegen, "%s", buf);