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Move dead submodules in-tree
Signed-off-by: swurl <swurl@swurl.xyz>
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swurl
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c0cceff365
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6c655321e6
4081 changed files with 1185566 additions and 45 deletions
236
externals/breakpad/src/processor/disassembler_x86_unittest.cc
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externals/breakpad/src/processor/disassembler_x86_unittest.cc
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// Copyright 2010 Google LLC
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google LLC nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifdef HAVE_CONFIG_H
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#include <config.h> // Must come first
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#endif
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#include <unistd.h>
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#include "breakpad_googletest_includes.h"
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#include "processor/disassembler_x86.h"
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#include "third_party/libdisasm/libdis.h"
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namespace {
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using google_breakpad::DisassemblerX86;
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unsigned char just_return[] = "\xc3"; // retn
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unsigned char invalid_instruction[] = "\x00"; // invalid
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unsigned char read_eax_jmp_eax[] =
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"\x8b\x18" // mov ebx, [eax];
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"\x33\xc9" // xor ebx, ebx;
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"\xff\x20" // jmp eax;
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"\xc3"; // retn;
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unsigned char write_eax_arg_to_call[] =
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"\x89\xa8\x00\x02\x00\x00" // mov [eax+200], ebp;
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"\xc1\xeb\x02" // shr ebx, 2;
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"\x50" // push eax;
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"\xe8\xd1\x24\x77\x88" // call something;
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"\xc3"; // retn;
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unsigned char read_edi_stosb[] =
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"\x8b\x07" // mov eax, [edi];
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"\x8b\xc8" // mov ecx, eax;
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"\xf3\xaa" // rep stosb;
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"\xc3"; // retn;
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unsigned char read_clobber_write[] =
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"\x03\x18" // add ebx, [eax];
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"\x8b\xc1" // mov eax, ecx;
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"\x89\x10" // mov [eax], edx;
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"\xc3"; // retn;
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unsigned char read_xchg_write[] =
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"\x03\x18" // add ebx, [eax];
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"\x91" // xchg eax, ecx;
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"\x89\x18" // mov [eax], ebx;
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"\x89\x11" // mov [ecx], edx;
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"\xc3"; // retn;
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unsigned char read_cmp[] =
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"\x03\x18" // add ebx, [eax];
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"\x83\xf8\x00" // cmp eax, 0;
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"\x74\x04" // je +4;
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"\xc3"; // retn;
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TEST(DisassemblerX86Test, SimpleReturnInstruction) {
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DisassemblerX86 dis(just_return, sizeof(just_return)-1, 0);
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EXPECT_EQ(1U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_TRUE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_controlflow, dis.currentInstructionGroup());
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const libdis::x86_insn_t* instruction = dis.currentInstruction();
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EXPECT_EQ(libdis::insn_controlflow, instruction->group);
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EXPECT_EQ(libdis::insn_return, instruction->type);
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EXPECT_EQ(0U, dis.NextInstruction());
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EXPECT_FALSE(dis.currentInstructionValid());
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EXPECT_EQ(NULL, dis.currentInstruction());
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}
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TEST(DisassemblerX86Test, SimpleInvalidInstruction) {
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DisassemblerX86 dis(invalid_instruction, sizeof(invalid_instruction)-1, 0);
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EXPECT_EQ(0U, dis.NextInstruction());
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EXPECT_FALSE(dis.currentInstructionValid());
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}
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TEST(DisassemblerX86Test, BadReadLeadsToBranch) {
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DisassemblerX86 dis(read_eax_jmp_eax, sizeof(read_eax_jmp_eax)-1, 0);
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup());
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EXPECT_TRUE(dis.setBadRead());
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_logic, dis.currentInstructionGroup());
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(google_breakpad::DISX86_BAD_BRANCH_TARGET, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_controlflow, dis.currentInstructionGroup());
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}
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TEST(DisassemblerX86Test, BadWriteLeadsToPushedArg) {
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DisassemblerX86 dis(write_eax_arg_to_call,
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sizeof(write_eax_arg_to_call)-1, 0);
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EXPECT_EQ(6U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup());
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EXPECT_TRUE(dis.setBadWrite());
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EXPECT_EQ(3U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_arithmetic, dis.currentInstructionGroup());
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EXPECT_EQ(1U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(5U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(google_breakpad::DISX86_BAD_ARGUMENT_PASSED, dis.flags());
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EXPECT_EQ(libdis::insn_controlflow, dis.currentInstructionGroup());
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EXPECT_FALSE(dis.endOfBlock());
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}
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TEST(DisassemblerX86Test, BadReadLeadsToBlockWrite) {
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DisassemblerX86 dis(read_edi_stosb, sizeof(read_edi_stosb)-1, 0);
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup());
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EXPECT_TRUE(dis.setBadRead());
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup());
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(google_breakpad::DISX86_BAD_BLOCK_WRITE, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_string, dis.currentInstructionGroup());
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}
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TEST(DisassemblerX86Test, BadReadClobberThenWrite) {
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DisassemblerX86 dis(read_clobber_write, sizeof(read_clobber_write)-1, 0);
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_arithmetic, dis.currentInstructionGroup());
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EXPECT_TRUE(dis.setBadRead());
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup());
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup());
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}
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TEST(DisassemblerX86Test, BadReadXCHGThenWrite) {
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DisassemblerX86 dis(read_xchg_write, sizeof(read_xchg_write)-1, 0);
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_arithmetic, dis.currentInstructionGroup());
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EXPECT_TRUE(dis.setBadRead());
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EXPECT_EQ(1U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup());
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup());
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(google_breakpad::DISX86_BAD_WRITE, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_move, dis.currentInstructionGroup());
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}
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TEST(DisassemblerX86Test, BadReadThenCMP) {
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DisassemblerX86 dis(read_cmp, sizeof(read_cmp)-1, 0);
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(0U, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_arithmetic, dis.currentInstructionGroup());
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EXPECT_TRUE(dis.setBadRead());
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EXPECT_EQ(3U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(google_breakpad::DISX86_BAD_COMPARISON, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_comparison, dis.currentInstructionGroup());
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EXPECT_EQ(2U, dis.NextInstruction());
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EXPECT_TRUE(dis.currentInstructionValid());
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EXPECT_EQ(google_breakpad::DISX86_BAD_COMPARISON, dis.flags());
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EXPECT_FALSE(dis.endOfBlock());
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EXPECT_EQ(libdis::insn_controlflow, dis.currentInstructionGroup());
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}
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}
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