Tess Strickland
702b0250ac
Previously, the jump target was printed as the value of the offset from the current PC. Instead, print it as the absolute or relative PC corresponding to the jump target, depending on the value of FLAG_disassemble_relative. To facilitate this, pipe the base PC for relative outputs through the various formatting functions. TEST=ci (tested manually while debugging) Cq-Include-Trybots: luci.dart.try:vm-dyn-linux-debug-x64-try,vm-dyn-mac-debug-arm64-try Change-Id: I9db6baa845bf89df70b36635277893686d73d842 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/465921 Reviewed-by: Alexander Markov <alexmarkov@google.com> Commit-Queue: Tess Strickland <sstrickl@google.com>
117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
// Copyright (c) 2024, 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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#ifndef RUNTIME_VM_COMPILER_ASSEMBLER_DISASSEMBLER_KBC_H_
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#define RUNTIME_VM_COMPILER_ASSEMBLER_DISASSEMBLER_KBC_H_
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#include "vm/globals.h"
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#if defined(DART_DYNAMIC_MODULES)
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#include "vm/compiler/assembler/disassembler.h"
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namespace dart {
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// Disassemble instructions.
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class KernelBytecodeDisassembler : public AllStatic {
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public:
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// Disassemble instructions between start and end.
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// (The assumption is that start is at a valid instruction).
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// Return true if all instructions were successfully decoded, false otherwise.
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static void Disassemble(uword start,
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uword end,
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uword base,
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DisassemblyFormatter* formatter,
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const Bytecode& bytecode);
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static void Disassemble(uword start,
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uword end,
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uword base,
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DisassemblyFormatter* formatter) {
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Disassemble(start, end, base, formatter, Bytecode::Handle());
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}
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static void Disassemble(uword start,
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uword end,
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DisassemblyFormatter* formatter,
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const Bytecode& bytecode) {
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ASSERT(!bytecode.IsNull());
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Disassemble(start, end, bytecode.PayloadStart(), formatter, bytecode);
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}
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static void Disassemble(uword start, uword end, const Bytecode& bytecode) {
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ASSERT(!bytecode.IsNull());
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#if !defined(PRODUCT)
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DisassembleToStdout stdout_formatter;
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LogBlock lb;
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Disassemble(start, end, &stdout_formatter, bytecode);
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#else
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UNREACHABLE();
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#endif
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}
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static void Disassemble(uword start, uword end, uword base) {
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#if !defined(PRODUCT)
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DisassembleToStdout stdout_formatter;
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LogBlock lb;
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Disassemble(start, end, base, &stdout_formatter);
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#else
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UNREACHABLE();
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#endif
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}
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static void Disassemble(uword start, uword end) {
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Disassemble(start, end, start);
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}
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static void Disassemble(uword start,
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uword end,
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char* buffer,
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uintptr_t buffer_size) {
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#if !defined(PRODUCT)
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DisassembleToMemory memory_formatter(buffer, buffer_size);
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LogBlock lb;
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Disassemble(start, end, start, &memory_formatter);
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#else
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UNREACHABLE();
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#endif
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}
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// Decodes one instruction.
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// Writes a hexadecimal representation into the hex_buffer and a
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// human-readable representation into the human_buffer.
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// Writes the length of the decoded instruction in bytes in out_instr_len.
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static void DecodeInstruction(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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int* out_instr_len,
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const Bytecode& bytecode,
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Object** object,
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uword pc,
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uword base);
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static void Disassemble(const Function& function);
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static void PrintSourcePositions(Zone* zone,
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BaseTextBuffer* buffer,
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uword base,
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const Bytecode& bytecode,
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const Script& script);
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static void PrintLocalVariablesInfo(Zone* zone,
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BaseTextBuffer* buffer,
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const Bytecode& bytecode,
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uword base);
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private:
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static const int kHexadecimalBufferSize = 32;
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static const int kUserReadableBufferSize = 256;
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};
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} // namespace dart
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#endif // defined(DART_DYNAMIC_MODULES)
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#endif // RUNTIME_VM_COMPILER_ASSEMBLER_DISASSEMBLER_KBC_H_
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