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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/processor/disassembler_x86.h')
| -rw-r--r-- | toolkit/crashreporter/google-breakpad/src/processor/disassembler_x86.h | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/processor/disassembler_x86.h b/toolkit/crashreporter/google-breakpad/src/processor/disassembler_x86.h deleted file mode 100644 index 710694107..000000000 --- a/toolkit/crashreporter/google-breakpad/src/processor/disassembler_x86.h +++ /dev/null @@ -1,127 +0,0 @@ -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -// disassembler_x86.h: Basic x86 bytecode disassembler -// -// Provides a simple disassembler which wraps libdisasm. This allows simple -// tests to be run against bytecode to test for various properties. -// -// Author: Cris Neckar - -#ifndef GOOGLE_BREAKPAD_PROCESSOR_DISASSEMBLER_X86_H_ -#define GOOGLE_BREAKPAD_PROCESSOR_DISASSEMBLER_X86_H_ - -#include <stddef.h> -#include <sys/types.h> - -#include "google_breakpad/common/breakpad_types.h" - -namespace libdis { -#include "third_party/libdisasm/libdis.h" -} - -namespace google_breakpad { - -enum { - DISX86_NONE = 0x0, - DISX86_BAD_BRANCH_TARGET = 0x1, - DISX86_BAD_ARGUMENT_PASSED = 0x2, - DISX86_BAD_WRITE = 0x4, - DISX86_BAD_BLOCK_WRITE = 0x8, - DISX86_BAD_READ = 0x10, - DISX86_BAD_BLOCK_READ = 0x20, - DISX86_BAD_COMPARISON = 0x40 -}; - -class DisassemblerX86 { - public: - // TODO(cdn): Modify this class to take a MemoryRegion instead of just - // a raw buffer. This will make it easier to use this on arbitrary - // minidumps without first copying out the code segment. - DisassemblerX86(const uint8_t *bytecode, uint32_t, uint32_t); - ~DisassemblerX86(); - - // This walks to the next instruction in the memory region and - // sets flags based on the type of instruction and previous state - // including any registers marked as bad through setBadRead() - // or setBadWrite(). This method can be called in a loop to - // disassemble until the end of a region. - uint32_t NextInstruction(); - - // Indicates whether the current disassembled instruction was valid. - bool currentInstructionValid() { return instr_valid_; } - - // Returns the current instruction as defined in libdis.h, - // or NULL if the current instruction is not valid. - const libdis::x86_insn_t* currentInstruction() { - return instr_valid_ ? ¤t_instr_ : NULL; - } - - // Returns the type of the current instruction as defined in libdis.h. - libdis::x86_insn_group currentInstructionGroup() { - return current_instr_.group; - } - - // Indicates whether a return instruction has been encountered. - bool endOfBlock() { return end_of_block_; } - - // The flags set so far for the disassembly. - uint16_t flags() { return flags_; } - - // This sets an indicator that the register used to determine - // src or dest for the current instruction is tainted. These can - // be used after examining the current instruction to indicate, - // for example that a bad read or write occurred and the pointer - // stored in the register is currently invalid. - bool setBadRead(); - bool setBadWrite(); - - protected: - const uint8_t *bytecode_; - uint32_t size_; - uint32_t virtual_address_; - uint32_t current_byte_offset_; - uint32_t current_inst_offset_; - - bool instr_valid_; - libdis::x86_insn_t current_instr_; - - // TODO(cdn): Maybe also track an expression's index register. - // ex: mov eax, [ebx + ecx]; ebx is base, ecx is index. - bool register_valid_; - libdis::x86_reg_t bad_register_; - - bool pushed_bad_value_; - bool end_of_block_; - - uint16_t flags_; -}; - -} // namespace google_breakpad - -#endif // GOOGLE_BREAKPAD_PROCESSOR_DISASSEMBLER_X86_H_ |