johnmccutchan@google.com
e9e54f6af6
R=iposva@google.com, turnidge@google.com Review URL: https://codereview.chromium.org//182703003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@33177 260f80e4-7a28-3924-810f-c04153c831b5
109 lines
3.3 KiB
C++
109 lines
3.3 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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#include "vm/json_stream.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 = 23;
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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 DisassembleToStdout::Print(const char* format, ...) {
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va_list args;
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va_start(args, format);
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OS::VFPrint(stdout, format, args);
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va_end(args);
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}
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void DisassembleToJSONStream::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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uint8_t* pc_ptr = reinterpret_cast<uint8_t*>(pc);
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// Instructions are represented as three consecutive values in a JSON array.
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// All three are strings. The first is the address of the instruction,
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// the second is the hex string of the code, and the final is a human
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// readable string.
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jsarr_.AddValueF("%p", pc_ptr);
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jsarr_.AddValue(hex_buffer);
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jsarr_.AddValue(human_buffer);
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}
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void DisassembleToJSONStream::Print(const char* format, ...) {
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va_list args;
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va_start(args, format);
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intptr_t len = OS::VSNPrint(NULL, 0, format, args);
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va_end(args);
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char* p = reinterpret_cast<char*>(malloc(len+1));
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va_start(args, format);
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intptr_t len2 = OS::VSNPrint(p, len, format, args);
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va_end(args);
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ASSERT(len == len2);
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for (intptr_t i = 0; i < len; i++) {
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if (p[i] == '\n' || p[i] == '\r') {
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p[i] = ' ';
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}
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}
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// Instructions are represented as three consecutive values in a JSON array.
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// All three are strings. Comments only use the third slot. See above comment
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// for more information.
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jsarr_.AddValue("");
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jsarr_.AddValue("");
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jsarr_.AddValue(p);
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free(p);
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}
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class FindAddrVisitor : public FindObjectVisitor {
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public:
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explicit FindAddrVisitor(uword addr)
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: FindObjectVisitor(Isolate::Current()), addr_(addr) { }
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virtual ~FindAddrVisitor() { }
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virtual uword filter_addr() const { return addr_; }
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// Check if object matches find condition.
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virtual bool FindObject(RawObject* obj) const {
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return obj == reinterpret_cast<RawObject*>(addr_);
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}
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private:
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const uword addr_;
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DISALLOW_COPY_AND_ASSIGN(FindAddrVisitor);
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};
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bool Disassembler::CanFindOldObject(uword addr) {
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FindAddrVisitor visitor(addr);
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NoGCScope no_gc;
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return Isolate::Current()->heap()->FindOldObject(&visitor) != Object::null();
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}
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} // namespace dart
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