17e6b385e67fed7cb0ea774b386064898784c9194thestig@chromium.org// Copyright (c) 2010, Google Inc. 22b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// All rights reserved. 32b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// 42b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// Redistribution and use in source and binary forms, with or without 52b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// modification, are permitted provided that the following conditions are 62b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// met: 72b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// 82b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// * Redistributions of source code must retain the above copyright 92b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// notice, this list of conditions and the following disclaimer. 102b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// * Redistributions in binary form must reproduce the above 112b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// copyright notice, this list of conditions and the following disclaimer 122b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// in the documentation and/or other materials provided with the 132b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// distribution. 142b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// * Neither the name of Google Inc. nor the names of its 152b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// contributors may be used to endorse or promote products derived from 162b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// this software without specific prior written permission. 172b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// 182b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 192b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 202b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 212b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 222b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 232b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 242b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 252b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 262b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 272b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 287e6b385e67fed7cb0ea774b386064898784c9194thestig@chromium.org// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE 292b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 302b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org#include <unistd.h> 312b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 322b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org#include "breakpad_googletest_includes.h" 332b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org#include "processor/disassembler_x86.h" 342b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org#include "third_party/libdisasm/libdis.h" 352b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 362b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgnamespace { 372b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 382b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgusing google_breakpad::DisassemblerX86; 392b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 402b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgunsigned char just_return[] = "\xc3"; // retn 412b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 422b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgunsigned char invalid_instruction[] = "\x00"; // invalid 432b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 442b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgunsigned char read_eax_jmp_eax[] = 452b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x8b\x18" // mov ebx, [eax]; 462b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x33\xc9" // xor ebx, ebx; 472b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\xff\x20" // jmp eax; 482b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\xc3"; // retn; 492b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 502b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgunsigned char write_eax_arg_to_call[] = 512b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x89\xa8\x00\x02\x00\x00" // mov [eax+200], ebp; 522b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\xc1\xeb\x02" // shr ebx, 2; 532b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x50" // push eax; 542b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\xe8\xd1\x24\x77\x88" // call something; 552b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\xc3"; // retn; 562b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 572b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgunsigned char read_edi_stosb[] = 582b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x8b\x07" // mov eax, [edi]; 592b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x8b\xc8" // mov ecx, eax; 602b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\xf3\xaa" // rep stosb; 612b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\xc3"; // retn; 622b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 632b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgunsigned char read_clobber_write[] = 642b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x03\x18" // add ebx, [eax]; 652b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x8b\xc1" // mov eax, ecx; 662b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x89\x10" // mov [eax], edx; 672b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\xc3"; // retn; 682b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 692b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgunsigned char read_xchg_write[] = 702b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x03\x18" // add ebx, [eax]; 712b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x91" // xchg eax, ecx; 722b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x89\x18" // mov [eax], ebx; 732b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x89\x11" // mov [ecx], edx; 742b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\xc3"; // retn; 752b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 762b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgunsigned char read_cmp[] = 772b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x03\x18" // add ebx, [eax]; 782b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x83\xf8\x00" // cmp eax, 0; 792b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\x74\x04" // je +4; 802b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org "\xc3"; // retn; 812b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 822b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgTEST(DisassemblerX86Test, SimpleReturnInstruction) { 832b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org DisassemblerX86 dis(just_return, sizeof(just_return)-1, 0); 842971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(1U, dis.NextInstruction()); 8564708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 862971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 8764708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.endOfBlock()); 882b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_controlflow, dis.currentInstructionGroup()); 89ed1c70b5b8b04911a1c357b0f49a51ff65c7d30eted.mielczarek const libdis::x86_insn_t* instruction = dis.currentInstruction(); 90ed1c70b5b8b04911a1c357b0f49a51ff65c7d30eted.mielczarek EXPECT_EQ(libdis::insn_controlflow, instruction->group); 91ed1c70b5b8b04911a1c357b0f49a51ff65c7d30eted.mielczarek EXPECT_EQ(libdis::insn_return, instruction->type); 922971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.NextInstruction()); 9364708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.currentInstructionValid()); 94ed1c70b5b8b04911a1c357b0f49a51ff65c7d30eted.mielczarek EXPECT_EQ(NULL, dis.currentInstruction()); 952b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org} 962b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 972b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgTEST(DisassemblerX86Test, SimpleInvalidInstruction) { 982b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org DisassemblerX86 dis(invalid_instruction, sizeof(invalid_instruction)-1, 0); 992971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.NextInstruction()); 10064708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.currentInstructionValid()); 1012b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org} 1022b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 1032b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgTEST(DisassemblerX86Test, BadReadLeadsToBranch) { 1042b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org DisassemblerX86 dis(read_eax_jmp_eax, sizeof(read_eax_jmp_eax)-1, 0); 1052971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 10664708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1072971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 10864708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1092b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup()); 11064708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.setBadRead()); 1112971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 11264708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1132971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 11464708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1152b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_logic, dis.currentInstructionGroup()); 1162971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 11764708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1182b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(google_breakpad::DISX86_BAD_BRANCH_TARGET, dis.flags()); 11964708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1202b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_controlflow, dis.currentInstructionGroup()); 1212b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org} 1222b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 1232b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgTEST(DisassemblerX86Test, BadWriteLeadsToPushedArg) { 1242b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org DisassemblerX86 dis(write_eax_arg_to_call, 1252b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org sizeof(write_eax_arg_to_call)-1, 0); 1262971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(6U, dis.NextInstruction()); 12764708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1282971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 12964708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1302b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup()); 13164708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.setBadWrite()); 1322971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(3U, dis.NextInstruction()); 13364708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1342971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 13564708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1362b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_arithmetic, dis.currentInstructionGroup()); 1372971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(1U, dis.NextInstruction()); 13864708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1392971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 14064708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1412971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(5U, dis.NextInstruction()); 14264708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1432b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(google_breakpad::DISX86_BAD_ARGUMENT_PASSED, dis.flags()); 1442b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_controlflow, dis.currentInstructionGroup()); 14564708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1462b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org} 1472b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 1482b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 1492b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgTEST(DisassemblerX86Test, BadReadLeadsToBlockWrite) { 1502b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org DisassemblerX86 dis(read_edi_stosb, sizeof(read_edi_stosb)-1, 0); 1512971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 15264708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1532971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 15464708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1552b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup()); 15664708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.setBadRead()); 1572971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 15864708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1592971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 16064708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1612b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup()); 1622971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 16364708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1642b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(google_breakpad::DISX86_BAD_BLOCK_WRITE, dis.flags()); 16564708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1662b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_string, dis.currentInstructionGroup()); 1672b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org} 1682b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 1692b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgTEST(DisassemblerX86Test, BadReadClobberThenWrite) { 1702b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org DisassemblerX86 dis(read_clobber_write, sizeof(read_clobber_write)-1, 0); 1712971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 17264708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1732971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 17464708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1752b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_arithmetic, dis.currentInstructionGroup()); 17664708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.setBadRead()); 1772971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 17864708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1792971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 18064708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1812b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup()); 1822971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 18364708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1842971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 18564708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1862b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup()); 1872b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org} 1882b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 1892b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgTEST(DisassemblerX86Test, BadReadXCHGThenWrite) { 1902b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org DisassemblerX86 dis(read_xchg_write, sizeof(read_xchg_write)-1, 0); 1912971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 19264708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1932971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 19464708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 1952b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_arithmetic, dis.currentInstructionGroup()); 19664708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.setBadRead()); 1972971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(1U, dis.NextInstruction()); 19864708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 1992971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 20064708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 2012b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup()); 2022971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 20364708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 2042971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 20564708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 2062b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup()); 2072971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 20864708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 2092b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(google_breakpad::DISX86_BAD_WRITE, dis.flags()); 21064708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 2112b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup()); 2122b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org} 2132b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org 2142b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.orgTEST(DisassemblerX86Test, BadReadThenCMP) { 2152b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org DisassemblerX86 dis(read_cmp, sizeof(read_cmp)-1, 0); 2162971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 21764708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 2182971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(0U, dis.flags()); 21964708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 2202b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_arithmetic, dis.currentInstructionGroup()); 22164708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.setBadRead()); 2222971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(3U, dis.NextInstruction()); 22364708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 2242b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(google_breakpad::DISX86_BAD_COMPARISON, dis.flags()); 22564708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 2262b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_comparison, dis.currentInstructionGroup()); 2272971a050754f48aaa807db47a29e0d0beddbdcf7ivan.penkov@gmail.com EXPECT_EQ(2U, dis.NextInstruction()); 22864708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_TRUE(dis.currentInstructionValid()); 2292b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(google_breakpad::DISX86_BAD_COMPARISON, dis.flags()); 23064708c560135ef71759dd1c41a99b29b324a6e03thestig@chromium.org EXPECT_FALSE(dis.endOfBlock()); 2312b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org EXPECT_EQ(libdis::insn_controlflow, dis.currentInstructionGroup()); 2322b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org} 2332b4274afc4fae883d1251a7a420e24fd526a9f16cdn@chromium.org} 234