| Index: sandbox/win/src/sidestep/mini_disassembler.h
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| diff --git a/sandbox/win/src/sidestep/mini_disassembler.h b/sandbox/win/src/sidestep/mini_disassembler.h
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| deleted file mode 100644
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| index 202c4ecc2041c2756ca05c9e9c95af7807d4bf91..0000000000000000000000000000000000000000
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| --- a/sandbox/win/src/sidestep/mini_disassembler.h
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| +++ /dev/null
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| @@ -1,156 +0,0 @@
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| -// Copyright (c) 2012 The Chromium Authors. All rights reserved.
|
| -// Use of this source code is governed by a BSD-style license that can be
|
| -// found in the LICENSE file.
|
| -
|
| -// Definition of MiniDisassembler.
|
| -
|
| -#ifndef SANDBOX_SRC_SIDESTEP_MINI_DISASSEMBLER_H__
|
| -#define SANDBOX_SRC_SIDESTEP_MINI_DISASSEMBLER_H__
|
| -
|
| -#include "sandbox/win/src/sidestep/mini_disassembler_types.h"
|
| -
|
| -namespace sidestep {
|
| -
|
| -// This small disassembler is very limited
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| -// in its functionality, and in fact does only the bare minimum required by the
|
| -// preamble patching utility. It may be useful for other purposes, however.
|
| -//
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| -// The limitations include at least the following:
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| -// -# No support for coprocessor opcodes, MMX, etc.
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| -// -# No machine-readable identification of opcodes or decoding of
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| -// assembly parameters. The name of the opcode (as a string) is given,
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| -// however, to aid debugging.
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| -//
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| -// You may ask what this little disassembler actually does, then? The answer is
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| -// that it does the following, which is exactly what the patching utility needs:
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| -// -# Indicates if opcode is a jump (any kind) or a return (any kind)
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| -// because this is important for the patching utility to determine if
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| -// a function is too short or there are jumps too early in it for it
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| -// to be preamble patched.
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| -// -# The opcode length is always calculated, so that the patching utility
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| -// can figure out where the next instruction starts, and whether it
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| -// already has enough instructions to replace with the absolute jump
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| -// to the patching code.
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| -//
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| -// The usage is quite simple; just create a MiniDisassembler and use its
|
| -// Disassemble() method.
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| -//
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| -// If you would like to extend this disassembler, please refer to the
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| -// IA-32 Intel Architecture Software Developer's Manual Volume 2:
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| -// Instruction Set Reference for information about operand decoding
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| -// etc.
|
| -class MiniDisassembler {
|
| - public:
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| -
|
| - // Creates a new instance and sets defaults.
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| - //
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| - // operand_default_32_bits: If true, the default operand size is
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| - // set to 32 bits, which is the default under Win32. Otherwise it is 16 bits.
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| - // address_default_32_bits: If true, the default address size is
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| - // set to 32 bits, which is the default under Win32. Otherwise it is 16 bits.
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| - MiniDisassembler(bool operand_default_32_bits,
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| - bool address_default_32_bits);
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| -
|
| - // Equivalent to MiniDisassembler(true, true);
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| - MiniDisassembler();
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| -
|
| - // Attempts to disassemble a single instruction starting from the
|
| - // address in memory it is pointed to.
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| - //
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| - // start: Address where disassembly should start.
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| - // instruction_bytes: Variable that will be incremented by
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| - // the length in bytes of the instruction.
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| - // Returns enItJump, enItReturn or enItGeneric on success. enItUnknown
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| - // if unable to disassemble, enItUnused if this seems to be an unused
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| - // opcode. In the last two (error) cases, cbInstruction will be set
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| - // to 0xffffffff.
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| - //
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| - // Postcondition: This instance of the disassembler is ready to be used again,
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| - // with unchanged defaults from creation time.
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| - InstructionType Disassemble(unsigned char* start,
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| - unsigned int* instruction_bytes);
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| -
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| - private:
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| -
|
| - // Makes the disassembler ready for reuse.
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| - void Initialize();
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| -
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| - // Sets the flags for address and operand sizes.
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| - // Returns Number of prefix bytes.
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| - InstructionType ProcessPrefixes(unsigned char* start, unsigned int* size);
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| -
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| - // Sets the flag for whether we have ModR/M, and increments
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| - // operand_bytes_ if any are specifies by the opcode directly.
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| - // Returns Number of opcode bytes.
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| - InstructionType ProcessOpcode(unsigned char* start,
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| - unsigned int table,
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| - unsigned int* size);
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| -
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| - // Checks the type of the supplied operand. Increments
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| - // operand_bytes_ if it directly indicates an immediate etc.
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| - // operand. Asserts have_modrm_ if the operand specifies
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| - // a ModR/M byte.
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| - bool ProcessOperand(int flag_operand);
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| -
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| - // Increments operand_bytes_ by size specified by ModR/M and
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| - // by SIB if present.
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| - // Returns 0 in case of error, 1 if there is just a ModR/M byte,
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| - // 2 if there is a ModR/M byte and a SIB byte.
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| - bool ProcessModrm(unsigned char* start, unsigned int* size);
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| -
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| - // Processes the SIB byte that it is pointed to.
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| - // start: Pointer to the SIB byte.
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| - // mod: The mod field from the ModR/M byte.
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| - // Returns 1 to indicate success (indicates 1 SIB byte)
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| - bool ProcessSib(unsigned char* start, unsigned char mod, unsigned int* size);
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| -
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| - // The instruction type we have decoded from the opcode.
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| - InstructionType instruction_type_;
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| -
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| - // Counts the number of bytes that is occupied by operands in
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| - // the current instruction (note: we don't care about how large
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| - // operands stored in registers etc. are).
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| - unsigned int operand_bytes_;
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| -
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| - // True iff there is a ModR/M byte in this instruction.
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| - bool have_modrm_;
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| -
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| - // True iff we need to decode the ModR/M byte (sometimes it just
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| - // points to a register, we can tell by the addressing mode).
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| - bool should_decode_modrm_;
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| -
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| - // Current operand size is 32 bits if true, 16 bits if false.
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| - bool operand_is_32_bits_;
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| -
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| - // Default operand size is 32 bits if true, 16 bits if false.
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| - bool operand_default_is_32_bits_;
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| -
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| - // Current address size is 32 bits if true, 16 bits if false.
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| - bool address_is_32_bits_;
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| -
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| - // Default address size is 32 bits if true, 16 bits if false.
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| - bool address_default_is_32_bits_;
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| -
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| - // Huge big opcode table based on the IA-32 manual, defined
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| - // in Ia32OpcodeMap.cpp
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| - static const OpcodeTable s_ia32_opcode_map_[];
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| -
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| - // Somewhat smaller table to help with decoding ModR/M bytes
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| - // when 16-bit addressing mode is being used. Defined in
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| - // Ia32ModrmMap.cpp
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| - static const ModrmEntry s_ia16_modrm_map_[];
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| -
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| - // Somewhat smaller table to help with decoding ModR/M bytes
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| - // when 32-bit addressing mode is being used. Defined in
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| - // Ia32ModrmMap.cpp
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| - static const ModrmEntry s_ia32_modrm_map_[];
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| -
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| - // Indicators of whether we got certain prefixes that certain
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| - // silly Intel instructions depend on in nonstandard ways for
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| - // their behaviors.
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| - bool got_f2_prefix_, got_f3_prefix_, got_66_prefix_;
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| -};
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| -
|
| -}; // namespace sidestep
|
| -
|
| -#endif // SANDBOX_SRC_SIDESTEP_MINI_DISASSEMBLER_H__
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|
|