Remove sandbox on Windows.

sandbox/win/src/sidestep/mini_disassembler.cpp

Index: sandbox/win/src/sidestep/mini_disassembler.cpp
diff --git a/sandbox/win/src/sidestep/mini_disassembler.cpp b/sandbox/win/src/sidestep/mini_disassembler.cpp
deleted file mode 100644
index 1e8e0bd97295cb652193251cad03af8365d9bf4c..0000000000000000000000000000000000000000
--- a/sandbox/win/src/sidestep/mini_disassembler.cpp
+++ /dev/null
@@ -1,395 +0,0 @@
-// 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.
-
-// Implementation of MiniDisassembler.
-
-#ifdef _WIN64
-#error The code in this file should not be used on 64-bit Windows.
-#endif
-
-#include "sandbox/win/src/sidestep/mini_disassembler.h"
-
-namespace sidestep {
-
-MiniDisassembler::MiniDisassembler(bool operand_default_is_32_bits,
-                                   bool address_default_is_32_bits)
-    : operand_default_is_32_bits_(operand_default_is_32_bits),
-      address_default_is_32_bits_(address_default_is_32_bits) {
-  Initialize();
-}
-
-MiniDisassembler::MiniDisassembler()
-    : operand_default_is_32_bits_(true),
-      address_default_is_32_bits_(true) {
-  Initialize();
-}
-
-InstructionType MiniDisassembler::Disassemble(
-    unsigned char* start_byte,
-    unsigned int* instruction_bytes) {
-  // Clean up any state from previous invocations.
-  Initialize();
-
-  // Start by processing any prefixes.
-  unsigned char* current_byte = start_byte;
-  unsigned int size = 0;
-  InstructionType instruction_type = ProcessPrefixes(current_byte, &size);
-
-  if (IT_UNKNOWN == instruction_type)
-    return instruction_type;
-
-  current_byte += size;
-  size = 0;
-
-  // Invariant: We have stripped all prefixes, and the operand_is_32_bits_
-  // and address_is_32_bits_ flags are correctly set.
-
-  instruction_type = ProcessOpcode(current_byte, 0, &size);
-
-  // Check for error processing instruction
-  if ((IT_UNKNOWN == instruction_type_) || (IT_UNUSED == instruction_type_)) {
-    return IT_UNKNOWN;
-  }
-
-  current_byte += size;
-
-  // Invariant: operand_bytes_ indicates the total size of operands
-  // specified by the opcode and/or ModR/M byte and/or SIB byte.
-  // pCurrentByte points to the first byte after the ModR/M byte, or after
-  // the SIB byte if it is present (i.e. the first byte of any operands
-  // encoded in the instruction).
-
-  // We get the total length of any prefixes, the opcode, and the ModR/M and
-  // SIB bytes if present, by taking the difference of the original starting
-  // address and the current byte (which points to the first byte of the
-  // operands if present, or to the first byte of the next instruction if
-  // they are not).  Adding the count of bytes in the operands encoded in
-  // the instruction gives us the full length of the instruction in bytes.
-  *instruction_bytes += operand_bytes_ + (current_byte - start_byte);
-
-  // Return the instruction type, which was set by ProcessOpcode().
-  return instruction_type_;
-}
-
-void MiniDisassembler::Initialize() {
-  operand_is_32_bits_ = operand_default_is_32_bits_;
-  address_is_32_bits_ = address_default_is_32_bits_;
-  operand_bytes_ = 0;
-  have_modrm_ = false;
-  should_decode_modrm_ = false;
-  instruction_type_ = IT_UNKNOWN;
-  got_f2_prefix_ = false;
-  got_f3_prefix_ = false;
-  got_66_prefix_ = false;
-}
-
-InstructionType MiniDisassembler::ProcessPrefixes(unsigned char* start_byte,
-                                                  unsigned int* size) {
-  InstructionType instruction_type = IT_GENERIC;
-  const Opcode& opcode = s_ia32_opcode_map_[0].table_[*start_byte];
-
-  switch (opcode.type_) {
-    case IT_PREFIX_ADDRESS:
-      address_is_32_bits_ = !address_default_is_32_bits_;
-      goto nochangeoperand;
-    case IT_PREFIX_OPERAND:
-      operand_is_32_bits_ = !operand_default_is_32_bits_;
-      nochangeoperand:
-    case IT_PREFIX:
-
-      if (0xF2 == (*start_byte))
-        got_f2_prefix_ = true;
-      else if (0xF3 == (*start_byte))
-        got_f3_prefix_ = true;
-      else if (0x66 == (*start_byte))
-        got_66_prefix_ = true;
-
-      instruction_type = opcode.type_;
-      (*size)++;
-      // we got a prefix, so add one and check next byte
-      ProcessPrefixes(start_byte + 1, size);
-    default:
-      break;   // not a prefix byte
-  }
-
-  return instruction_type;
-}
-
-InstructionType MiniDisassembler::ProcessOpcode(unsigned char* start_byte,
-                                                unsigned int table_index,
-                                                unsigned int* size) {
-  const OpcodeTable& table = s_ia32_opcode_map_[table_index];   // Get our table
-  unsigned char current_byte = (*start_byte) >> table.shift_;
-  current_byte = current_byte & table.mask_;  // Mask out the bits we will use
-
-  // Check whether the byte we have is inside the table we have.
-  if (current_byte < table.min_lim_ || current_byte > table.max_lim_) {
-    instruction_type_ = IT_UNKNOWN;
-    return instruction_type_;
-  }
-
-  const Opcode& opcode = table.table_[current_byte];
-  if (IT_UNUSED == opcode.type_) {
-    // This instruction is not used by the IA-32 ISA, so we indicate
-    // this to the user.  Probably means that we were pointed to
-    // a byte in memory that was not the start of an instruction.
-    instruction_type_ = IT_UNUSED;
-    return instruction_type_;
-  } else if (IT_REFERENCE == opcode.type_) {
-    // We are looking at an opcode that has more bytes (or is continued
-    // in the ModR/M byte).  Recursively find the opcode definition in
-    // the table for the opcode's next byte.
-    (*size)++;
-    ProcessOpcode(start_byte + 1, opcode.table_index_, size);
-    return instruction_type_;
-  }
-
-  const SpecificOpcode* specific_opcode = reinterpret_cast<
-                                              const SpecificOpcode*>(&opcode);
-  if (opcode.is_prefix_dependent_) {
-    if (got_f2_prefix_ && opcode.opcode_if_f2_prefix_.mnemonic_ != 0) {
-      specific_opcode = &opcode.opcode_if_f2_prefix_;
-    } else if (got_f3_prefix_ && opcode.opcode_if_f3_prefix_.mnemonic_ != 0) {
-      specific_opcode = &opcode.opcode_if_f3_prefix_;
-    } else if (got_66_prefix_ && opcode.opcode_if_66_prefix_.mnemonic_ != 0) {
-      specific_opcode = &opcode.opcode_if_66_prefix_;
-    }
-  }
-
-  // Inv: The opcode type is known.
-  instruction_type_ = specific_opcode->type_;
-
-  // Let's process the operand types to see if we have any immediate
-  // operands, and/or a ModR/M byte.
-
-  ProcessOperand(specific_opcode->flag_dest_);
-  ProcessOperand(specific_opcode->flag_source_);
-  ProcessOperand(specific_opcode->flag_aux_);
-
-  // Inv: We have processed the opcode and incremented operand_bytes_
-  // by the number of bytes of any operands specified by the opcode
-  // that are stored in the instruction (not registers etc.).  Now
-  // we need to return the total number of bytes for the opcode and
-  // for the ModR/M or SIB bytes if they are present.
-
-  if (table.mask_ != 0xff) {
-    if (have_modrm_) {
-      // we're looking at a ModR/M byte so we're not going to
-      // count that into the opcode size
-      ProcessModrm(start_byte, size);
-      return IT_GENERIC;
-    } else {
-      // need to count the ModR/M byte even if it's just being
-      // used for opcode extension
-      (*size)++;
-      return IT_GENERIC;
-    }
-  } else {
-    if (have_modrm_) {
-      // The ModR/M byte is the next byte.
-      (*size)++;
-      ProcessModrm(start_byte + 1, size);
-      return IT_GENERIC;
-    } else {
-      (*size)++;
-      return IT_GENERIC;
-    }
-  }
-}
-
-bool MiniDisassembler::ProcessOperand(int flag_operand) {
-  bool succeeded = true;
-  if (AM_NOT_USED == flag_operand)
-    return succeeded;
-
-  // Decide what to do based on the addressing mode.
-  switch (flag_operand & AM_MASK) {
-    // No ModR/M byte indicated by these addressing modes, and no
-    // additional (e.g. immediate) parameters.
-    case AM_A:  // Direct address
-    case AM_F:  // EFLAGS register
-    case AM_X:  // Memory addressed by the DS:SI register pair
-    case AM_Y:  // Memory addressed by the ES:DI register pair
-    case AM_IMPLICIT:  // Parameter is implicit, occupies no space in
-                       // instruction
-      break;
-
-    // There is a ModR/M byte but it does not necessarily need
-    // to be decoded.
-    case AM_C:  // reg field of ModR/M selects a control register
-    case AM_D:  // reg field of ModR/M selects a debug register
-    case AM_G:  // reg field of ModR/M selects a general register
-    case AM_P:  // reg field of ModR/M selects an MMX register
-    case AM_R:  // mod field of ModR/M may refer only to a general register
-    case AM_S:  // reg field of ModR/M selects a segment register
-    case AM_T:  // reg field of ModR/M selects a test register
-    case AM_V:  // reg field of ModR/M selects a 128-bit XMM register
-      have_modrm_ = true;
-      break;
-
-    // In these addressing modes, there is a ModR/M byte and it needs to be
-    // decoded. No other (e.g. immediate) params than indicated in ModR/M.
-    case AM_E:  // Operand is either a general-purpose register or memory,
-                // specified by ModR/M byte
-    case AM_M:  // ModR/M byte will refer only to memory
-    case AM_Q:  // Operand is either an MMX register or memory (complex
-                // evaluation), specified by ModR/M byte
-    case AM_W:  // Operand is either a 128-bit XMM register or memory (complex
-                // eval), specified by ModR/M byte
-      have_modrm_ = true;
-      should_decode_modrm_ = true;
-      break;
-
-    // These addressing modes specify an immediate or an offset value
-    // directly, so we need to look at the operand type to see how many
-    // bytes.
-    case AM_I:  // Immediate data.
-    case AM_J:  // Jump to offset.
-    case AM_O:  // Operand is at offset.
-      switch (flag_operand & OT_MASK) {
-        case OT_B:  // Byte regardless of operand-size attribute.
-          operand_bytes_ += OS_BYTE;
-          break;
-        case OT_C:  // Byte or word, depending on operand-size attribute.
-          if (operand_is_32_bits_)
-            operand_bytes_ += OS_WORD;
-          else
-            operand_bytes_ += OS_BYTE;
-          break;
-        case OT_D:  // Doubleword, regardless of operand-size attribute.
-          operand_bytes_ += OS_DOUBLE_WORD;
-          break;
-        case OT_DQ:  // Double-quadword, regardless of operand-size attribute.
-          operand_bytes_ += OS_DOUBLE_QUAD_WORD;
-          break;
-        case OT_P:  // 32-bit or 48-bit pointer, depending on operand-size
-                    // attribute.
-          if (operand_is_32_bits_)
-            operand_bytes_ += OS_48_BIT_POINTER;
-          else
-            operand_bytes_ += OS_32_BIT_POINTER;
-          break;
-        case OT_PS:  // 128-bit packed single-precision floating-point data.
-          operand_bytes_ += OS_128_BIT_PACKED_SINGLE_PRECISION_FLOATING;
-          break;
-        case OT_Q:  // Quadword, regardless of operand-size attribute.
-          operand_bytes_ += OS_QUAD_WORD;
-          break;
-        case OT_S:  // 6-byte pseudo-descriptor.
-          operand_bytes_ += OS_PSEUDO_DESCRIPTOR;
-          break;
-        case OT_SD:  // Scalar Double-Precision Floating-Point Value
-        case OT_PD:  // Unaligned packed double-precision floating point value
-          operand_bytes_ += OS_DOUBLE_PRECISION_FLOATING;
-          break;
-        case OT_SS:
-          // Scalar element of a 128-bit packed single-precision
-          // floating data.
-          // We simply return enItUnknown since we don't have to support
-          // floating point
-          succeeded = false;
-          break;
-        case OT_V:  // Word or doubleword, depending on operand-size attribute.
-          if (operand_is_32_bits_)
-            operand_bytes_ += OS_DOUBLE_WORD;
-          else
-            operand_bytes_ += OS_WORD;
-          break;
-        case OT_W:  // Word, regardless of operand-size attribute.
-          operand_bytes_ += OS_WORD;
-          break;
-
-        // Can safely ignore these.
-        case OT_A:  // Two one-word operands in memory or two double-word
-                    // operands in memory
-        case OT_PI:  // Quadword MMX technology register (e.g. mm0)
-        case OT_SI:  // Doubleword integer register (e.g., eax)
-          break;
-
-        default:
-          break;
-      }
-      break;
-
-    default:
-      break;
-  }
-
-  return succeeded;
-}
-
-bool MiniDisassembler::ProcessModrm(unsigned char* start_byte,
-                                    unsigned int* size) {
-  // If we don't need to decode, we just return the size of the ModR/M
-  // byte (there is never a SIB byte in this case).
-  if (!should_decode_modrm_) {
-    (*size)++;
-    return true;
-  }
-
-  // We never care about the reg field, only the combination of the mod
-  // and r/m fields, so let's start by packing those fields together into
-  // 5 bits.
-  unsigned char modrm = (*start_byte);
-  unsigned char mod = modrm & 0xC0;  // mask out top two bits to get mod field
-  modrm = modrm & 0x07;  // mask out bottom 3 bits to get r/m field
-  mod = mod >> 3;  // shift the mod field to the right place
-  modrm = mod | modrm;  // combine the r/m and mod fields as discussed
-  mod = mod >> 3;  // shift the mod field to bits 2..0
-
-  // Invariant: modrm contains the mod field in bits 4..3 and the r/m field
-  // in bits 2..0, and mod contains the mod field in bits 2..0
-
-  const ModrmEntry* modrm_entry = 0;
-  if (address_is_32_bits_)
-    modrm_entry = &s_ia32_modrm_map_[modrm];
-  else
-    modrm_entry = &s_ia16_modrm_map_[modrm];
-
-  // Invariant: modrm_entry points to information that we need to decode
-  // the ModR/M byte.
-
-  // Add to the count of operand bytes, if the ModR/M byte indicates
-  // that some operands are encoded in the instruction.
-  if (modrm_entry->is_encoded_in_instruction_)
-    operand_bytes_ += modrm_entry->operand_size_;
-
-  // Process the SIB byte if necessary, and return the count
-  // of ModR/M and SIB bytes.
-  if (modrm_entry->use_sib_byte_) {
-    (*size)++;
-    return ProcessSib(start_byte + 1, mod, size);
-  } else {
-    (*size)++;
-    return true;
-  }
-}
-
-bool MiniDisassembler::ProcessSib(unsigned char* start_byte,
-                                  unsigned char mod,
-                                  unsigned int* size) {
-  // get the mod field from the 2..0 bits of the SIB byte
-  unsigned char sib_base = (*start_byte) & 0x07;
-  if (0x05 == sib_base) {
-    switch (mod) {
-      case 0x00:  // mod == 00
-      case 0x02:  // mod == 10
-        operand_bytes_ += OS_DOUBLE_WORD;
-        break;
-      case 0x01:  // mod == 01
-        operand_bytes_ += OS_BYTE;
-        break;
-      case 0x03:  // mod == 11
-        // According to the IA-32 docs, there does not seem to be a disp
-        // value for this value of mod
-      default:
-        break;
-    }
-  }
-
-  (*size)++;
-  return true;
-}
-
-};  // namespace sidestep