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++ /*
++ * Copyright (C) 2012 Apple Inc. All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ * notice, this list of conditions and the following disclaimer in the
++ * documentation and/or other materials provided with the distribution.
++ *
++ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
++ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
++ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++ #include "config.h"
++ #include "LinkBuffer.h"
++
++ #if ENABLE(ASSEMBLER)
++
++ #include "Options.h"
++
++ namespace JSC {
++
++ #if DUMP_LINK_STATISTICS
++ void LinkBuffer::dumpLinkStatistics(void* code, size_t initializeSize, size_t finalSize)
++ {
++ static unsigned linkCount = 0;
++ static unsigned totalInitialSize = 0;
++ static unsigned totalFinalSize = 0;
++ linkCount++;
++ totalInitialSize += initialSize;
++ totalFinalSize += finalSize;
++ dataLogF("link %p: orig %u, compact %u (delta %u, %.2f%%)\n",
++ code, static_cast<unsigned>(initialSize), static_cast<unsigned>(finalSize),
++ static_cast<unsigned>(initialSize - finalSize),
++ 100.0 * (initialSize - finalSize) / initialSize);
++ dataLogF("\ttotal %u: orig %u, compact %u (delta %u, %.2f%%)\n",
++ linkCount, totalInitialSize, totalFinalSize, totalInitialSize - totalFinalSize,
++ 100.0 * (totalInitialSize - totalFinalSize) / totalInitialSize);
++ }
++ #endif
++
++ #if DUMP_CODE
++ void LinkBuffer::dumpCode(void* code, size_t size)
++ {
++ #if CPU(ARM_THUMB2)
++ // Dump the generated code in an asm file format that can be assembled and then disassembled
++ // for debugging purposes. For example, save this output as jit.s:
++ // gcc -arch armv7 -c jit.s
++ // otool -tv jit.o
++ static unsigned codeCount = 0;
++ unsigned short* tcode = static_cast<unsigned short*>(code);
++ size_t tsize = size / sizeof(short);
++ char nameBuf[128];
++ snprintf(nameBuf, sizeof(nameBuf), "_jsc_jit%u", codeCount++);
++ dataLogF("\t.syntax unified\n"
++ "\t.section\t__TEXT,__text,regular,pure_instructions\n"
++ "\t.globl\t%s\n"
++ "\t.align 2\n"
++ "\t.code 16\n"
++ "\t.thumb_func\t%s\n"
++ "# %p\n"
++ "%s:\n", nameBuf, nameBuf, code, nameBuf);
++
++ for (unsigned i = 0; i < tsize; i++)
++ dataLogF("\t.short\t0x%x\n", tcode[i]);
++ #endif
++ }
++ #endif
++
++ } // namespace JSC
++
++ #endif // ENABLE(ASSEMBLER)
++
++