dgrove@google.com
4c0f559d23
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15 260f80e4-7a28-3924-810f-c04153c831b5
86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/disassembler.h"
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#include "vm/assembler.h"
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#include "vm/globals.h"
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#include "vm/os.h"
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namespace dart {
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void DisassembleToStdout::ConsumeInstruction(char* hex_buffer,
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intptr_t hex_size,
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char* human_buffer,
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intptr_t human_size,
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uword pc) {
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static const int kHexColumnWidth = 18;
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uint8_t* pc_ptr = reinterpret_cast<uint8_t*>(pc);
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OS::Print("%p %s", pc_ptr, hex_buffer);
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int hex_length = strlen(hex_buffer);
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if (hex_length < kHexColumnWidth) {
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for (int i = kHexColumnWidth - hex_length; i > 0; i--) {
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OS::Print(" ");
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}
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}
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OS::Print("%s", human_buffer);
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OS::Print("\n");
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}
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void Disassembler::Disassemble(uword start,
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uword end,
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DisassemblyFormatter* formatter) {
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ASSERT(formatter != NULL);
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char hex_buffer[kHexadecimalBufferSize]; // Instruction in hexadecimal form.
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char human_buffer[kUserReadableBufferSize]; // Human-readable instruction.
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uword pc = start;
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while (pc < end) {
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int instruction_length = DecodeInstruction(hex_buffer,
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sizeof(hex_buffer),
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human_buffer,
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sizeof(human_buffer),
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pc);
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formatter->ConsumeInstruction(hex_buffer,
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sizeof(hex_buffer),
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human_buffer,
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sizeof(human_buffer),
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pc);
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pc += instruction_length;
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}
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}
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void Disassembler::DisassembleMemoryRegionRange(
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const MemoryRegion& instructions,
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uword from,
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uword to,
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DisassemblyFormatter *formatter) {
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ASSERT(formatter != NULL);
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char hex_buffer[kHexadecimalBufferSize]; // Instruction in hexadecimal form.
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char human_buffer[kUserReadableBufferSize]; // Human-readable instruction.
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uword start = instructions.start();
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uword end = instructions.end();
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ASSERT((from >= start) && (to <= end) && (from <= to));
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uword pc = start;
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uword stop = Utils::Minimum(end, to);
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while (pc < stop) {
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int instruction_length = DecodeInstruction(hex_buffer,
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sizeof(hex_buffer),
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human_buffer,
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sizeof(human_buffer),
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pc);
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if (pc >= from) {
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formatter->ConsumeInstruction(hex_buffer,
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sizeof(hex_buffer),
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human_buffer,
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sizeof(human_buffer),
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pc);
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}
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pc += instruction_length;
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}
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}
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} // namespace dart
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