| /* |
| * 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) |
| |
| |
