The Tor Browser: toolkit/crashreporter/google-breakpad/src/processor/stackwalker_amd64

toolkit/crashreporter/google-breakpad/src/processor/stackwalker_amd64_unittest.cc@6474c204b198 (annotated)

toolkit/crashreporter/google-breakpad/src/processor/stackwalker_amd64_unittest.cc

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 // Copyright (c) 2010, Google Inc.
 // 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.
 // Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
 // stackwalker_amd64_unittest.cc: Unit tests for StackwalkerAMD64 class.
 #include <string.h>
 #include <string>
 #include <vector>
 #include "breakpad_googletest_includes.h"
 #include "common/test_assembler.h"
 #include "common/using_std_string.h"
 #include "google_breakpad/common/minidump_format.h"
 #include "google_breakpad/processor/basic_source_line_resolver.h"
 #include "google_breakpad/processor/call_stack.h"
 #include "google_breakpad/processor/code_module.h"
 #include "google_breakpad/processor/source_line_resolver_interface.h"
 #include "google_breakpad/processor/stack_frame_cpu.h"
 #include "processor/stackwalker_unittest_utils.h"
 #include "processor/stackwalker_amd64.h"
 using google_breakpad::BasicSourceLineResolver;
 using google_breakpad::CallStack;
 using google_breakpad::CodeModule;
 using google_breakpad::StackFrameSymbolizer;
 using google_breakpad::StackFrame;
 using google_breakpad::StackFrameAMD64;
 using google_breakpad::StackwalkerAMD64;
 using google_breakpad::SystemInfo;
 using google_breakpad::test_assembler::kLittleEndian;
 using google_breakpad::test_assembler::Label;
 using google_breakpad::test_assembler::Section;
 using std::vector;
 using testing::_;
 using testing::Return;
 using testing::SetArgumentPointee;
 using testing::Test;
 class StackwalkerAMD64Fixture {
  public:
   StackwalkerAMD64Fixture()
     : stack_section(kLittleEndian),
       // Give the two modules reasonable standard locations and names
       // for tests to play with.
       module1(0x40000000c0000000ULL, 0x10000, "module1", "version1"),
       module2(0x50000000b0000000ULL, 0x10000, "module2", "version2") {
     // Identify the system as a Linux system.
     system_info.os = "Linux";
     system_info.os_short = "linux";
     system_info.os_version = "Horrendous Hippo";
     system_info.cpu = "x86";
     system_info.cpu_info = "";
     // Put distinctive values in the raw CPU context.
     BrandContext(&raw_context);
     // Create some modules with some stock debugging information.
     modules.Add(&module1);
     modules.Add(&module2);
     // By default, none of the modules have symbol info; call
     // SetModuleSymbols to override this.
     EXPECT_CALL(supplier, GetCStringSymbolData(_, _, _, _))
       .WillRepeatedly(Return(MockSymbolSupplier::NOT_FOUND));
   }
   // Set the Breakpad symbol information that supplier should return for
   // MODULE to INFO.
   void SetModuleSymbols(MockCodeModule *module, const string &info) {
     char *buffer = supplier.CopySymbolDataAndOwnTheCopy(info);
     EXPECT_CALL(supplier, GetCStringSymbolData(module, &system_info, _, _))
       .WillRepeatedly(DoAll(SetArgumentPointee<3>(buffer),
                             Return(MockSymbolSupplier::FOUND)));
   }
   // Populate stack_region with the contents of stack_section. Use
   // stack_section.start() as the region's starting address.
   void RegionFromSection() {
     string contents;
     ASSERT_TRUE(stack_section.GetContents(&contents));
     stack_region.Init(stack_section.start().Value(), contents);
   }
   // Fill RAW_CONTEXT with pseudo-random data, for round-trip checking.
   void BrandContext(MDRawContextAMD64 *raw_context) {
     uint8_t x = 173;
     for (size_t i = 0; i < sizeof(*raw_context); i++)
       reinterpret_cast<uint8_t *>(raw_context)[i] = (x += 17);
   }
   SystemInfo system_info;
   MDRawContextAMD64 raw_context;
   Section stack_section;
   MockMemoryRegion stack_region;
   MockCodeModule module1;
   MockCodeModule module2;
   MockCodeModules modules;
   MockSymbolSupplier supplier;
   BasicSourceLineResolver resolver;
   CallStack call_stack;
   const vector<StackFrame *> *frames;
 };
 class GetContextFrame: public StackwalkerAMD64Fixture, public Test { };
 class SanityCheck: public StackwalkerAMD64Fixture, public Test { };
 TEST_F(SanityCheck, NoResolver) {
   // There should be no references to the stack in this walk: we don't
   // provide any call frame information, so trying to reconstruct the
   // context frame's caller should fail. So there's no need for us to
   // provide stack contents.
   raw_context.rip = 0x40000000c0000200ULL;
   raw_context.rbp = 0x8000000080000000ULL;
   StackFrameSymbolizer frame_symbolizer(NULL, NULL);
   StackwalkerAMD64 walker(&system_info, &raw_context, &stack_region, &modules,
                           &frame_symbolizer);
   // This should succeed even without a resolver or supplier.
   vector<const CodeModule*> modules_without_symbols;
   ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols));
   ASSERT_EQ(1U, modules_without_symbols.size());
   ASSERT_EQ("module1", modules_without_symbols[0]->debug_file());
   frames = call_stack.frames();
   ASSERT_GE(1U, frames->size());
   StackFrameAMD64 *frame = static_cast<StackFrameAMD64 *>(frames->at(0));
   // Check that the values from the original raw context made it
   // through to the context in the stack frame.
   EXPECT_EQ(0, memcmp(&raw_context, &frame->context, sizeof(raw_context)));
 }
 TEST_F(GetContextFrame, Simple) {
   // There should be no references to the stack in this walk: we don't
   // provide any call frame information, so trying to reconstruct the
   // context frame's caller should fail. So there's no need for us to
   // provide stack contents.
   raw_context.rip = 0x40000000c0000200ULL;
   raw_context.rbp = 0x8000000080000000ULL;
   StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
   StackwalkerAMD64 walker(&system_info, &raw_context, &stack_region, &modules,
                           &frame_symbolizer);
   vector<const CodeModule*> modules_without_symbols;
   ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols));
   ASSERT_EQ(1U, modules_without_symbols.size());
   ASSERT_EQ("module1", modules_without_symbols[0]->debug_file());
   frames = call_stack.frames();
   ASSERT_GE(1U, frames->size());
   StackFrameAMD64 *frame = static_cast<StackFrameAMD64 *>(frames->at(0));
   // Check that the values from the original raw context made it
   // through to the context in the stack frame.
   EXPECT_EQ(0, memcmp(&raw_context, &frame->context, sizeof(raw_context)));
 }
 // The stackwalker should be able to produce the context frame even
 // without stack memory present.
 TEST_F(GetContextFrame, NoStackMemory) {
   raw_context.rip = 0x40000000c0000200ULL;
   raw_context.rbp = 0x8000000080000000ULL;
   StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
   StackwalkerAMD64 walker(&system_info, &raw_context, NULL, &modules,
                           &frame_symbolizer);
   vector<const CodeModule*> modules_without_symbols;
   ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols));
   ASSERT_EQ(1U, modules_without_symbols.size());
   ASSERT_EQ("module1", modules_without_symbols[0]->debug_file());
   frames = call_stack.frames();
   ASSERT_GE(1U, frames->size());
   StackFrameAMD64 *frame = static_cast<StackFrameAMD64 *>(frames->at(0));
   // Check that the values from the original raw context made it
   // through to the context in the stack frame.
   EXPECT_EQ(0, memcmp(&raw_context, &frame->context, sizeof(raw_context)));
 }
 class GetCallerFrame: public StackwalkerAMD64Fixture, public Test { };
 TEST_F(GetCallerFrame, ScanWithoutSymbols) {
   // When the stack walker resorts to scanning the stack,
   // only addresses located within loaded modules are
   // considered valid return addresses.
   // Force scanning through three frames to ensure that the
   // stack pointer is set properly in scan-recovered frames.
   stack_section.start() = 0x8000000080000000ULL;
   uint64_t return_address1 = 0x50000000b0000100ULL;
   uint64_t return_address2 = 0x50000000b0000900ULL;
   Label frame1_sp, frame2_sp, frame1_rbp;
   stack_section
     // frame 0
     .Append(16, 0)                      // space
     .D64(0x40000000b0000000ULL)         // junk that's not
     .D64(0x50000000d0000000ULL)         // a return address
     .D64(return_address1)               // actual return address
     // frame 1
     .Mark(&frame1_sp)
     .Append(16, 0)                      // space
     .D64(0x40000000b0000000ULL)         // more junk
     .D64(0x50000000d0000000ULL)
     .Mark(&frame1_rbp)
     .D64(stack_section.start())         // This is in the right place to be
                                         // a saved rbp, but it's bogus, so
                                         // we shouldn't report it.
     .D64(return_address2)               // actual return address
     // frame 2
     .Mark(&frame2_sp)
     .Append(32, 0);                     // end of stack
   RegionFromSection();
   raw_context.rip = 0x40000000c0000200ULL;
   raw_context.rbp = frame1_rbp.Value();
   raw_context.rsp = stack_section.start().Value();
   StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
   StackwalkerAMD64 walker(&system_info, &raw_context, &stack_region, &modules,
                           &frame_symbolizer);
   vector<const CodeModule*> modules_without_symbols;
   ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols));
   ASSERT_EQ(2U, modules_without_symbols.size());
   ASSERT_EQ("module1", modules_without_symbols[0]->debug_file());
   ASSERT_EQ("module2", modules_without_symbols[1]->debug_file());
   frames = call_stack.frames();
   ASSERT_EQ(3U, frames->size());
   StackFrameAMD64 *frame0 = static_cast<StackFrameAMD64 *>(frames->at(0));
   EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
   ASSERT_EQ(StackFrameAMD64::CONTEXT_VALID_ALL, frame0->context_validity);
   EXPECT_EQ(0, memcmp(&raw_context, &frame0->context, sizeof(raw_context)));
   StackFrameAMD64 *frame1 = static_cast<StackFrameAMD64 *>(frames->at(1));
   EXPECT_EQ(StackFrame::FRAME_TRUST_SCAN, frame1->trust);
   ASSERT_EQ((StackFrameAMD64::CONTEXT_VALID_RIP |
              StackFrameAMD64::CONTEXT_VALID_RSP |
              StackFrameAMD64::CONTEXT_VALID_RBP),
             frame1->context_validity);
   EXPECT_EQ(return_address1, frame1->context.rip);
   EXPECT_EQ(frame1_sp.Value(), frame1->context.rsp);
   EXPECT_EQ(frame1_rbp.Value(), frame1->context.rbp);
   StackFrameAMD64 *frame2 = static_cast<StackFrameAMD64 *>(frames->at(2));
   EXPECT_EQ(StackFrame::FRAME_TRUST_SCAN, frame2->trust);
   ASSERT_EQ((StackFrameAMD64::CONTEXT_VALID_RIP |
              StackFrameAMD64::CONTEXT_VALID_RSP),
             frame2->context_validity);
   EXPECT_EQ(return_address2, frame2->context.rip);
   EXPECT_EQ(frame2_sp.Value(), frame2->context.rsp);
 }
 TEST_F(GetCallerFrame, ScanWithFunctionSymbols) {
   // During stack scanning, if a potential return address
   // is located within a loaded module that has symbols,
   // it is only considered a valid return address if it
   // lies within a function's bounds.
   stack_section.start() = 0x8000000080000000ULL;
   uint64_t return_address = 0x50000000b0000110ULL;
   Label frame1_sp, frame1_rbp;
   stack_section
     // frame 0
     .Append(16, 0)                      // space
     .D64(0x40000000b0000000ULL)         // junk that's not
     .D64(0x50000000b0000000ULL)         // a return address
     .D64(0x40000000c0001000ULL)         // a couple of plausible addresses
     .D64(0x50000000b000aaaaULL)         // that are not within functions
     .D64(return_address)                // actual return address
     // frame 1
     .Mark(&frame1_sp)
     .Append(32, 0)                      // end of stack
     .Mark(&frame1_rbp);
   RegionFromSection();
   raw_context.rip = 0x40000000c0000200ULL;
   raw_context.rbp = frame1_rbp.Value();
   raw_context.rsp = stack_section.start().Value();
   SetModuleSymbols(&module1,
                    // The youngest frame's function.
                    "FUNC 100 400 10 platypus\n");
   SetModuleSymbols(&module2,
                    // The calling frame's function.
                    "FUNC 100 400 10 echidna\n");
   StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
   StackwalkerAMD64 walker(&system_info, &raw_context, &stack_region, &modules,
                           &frame_symbolizer);
   vector<const CodeModule*> modules_without_symbols;
   ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols));
   ASSERT_EQ(0U, modules_without_symbols.size());
   frames = call_stack.frames();
   ASSERT_EQ(2U, frames->size());
   StackFrameAMD64 *frame0 = static_cast<StackFrameAMD64 *>(frames->at(0));
   EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
   ASSERT_EQ(StackFrameAMD64::CONTEXT_VALID_ALL, frame0->context_validity);
   EXPECT_EQ("platypus", frame0->function_name);
   EXPECT_EQ(0x40000000c0000100ULL, frame0->function_base);
   StackFrameAMD64 *frame1 = static_cast<StackFrameAMD64 *>(frames->at(1));
   EXPECT_EQ(StackFrame::FRAME_TRUST_SCAN, frame1->trust);
   ASSERT_EQ((StackFrameAMD64::CONTEXT_VALID_RIP |
              StackFrameAMD64::CONTEXT_VALID_RSP |
              StackFrameAMD64::CONTEXT_VALID_RBP),
             frame1->context_validity);
   EXPECT_EQ(return_address, frame1->context.rip);
   EXPECT_EQ(frame1_sp.Value(), frame1->context.rsp);
   EXPECT_EQ(frame1_rbp.Value(), frame1->context.rbp);
   EXPECT_EQ("echidna", frame1->function_name);
   EXPECT_EQ(0x50000000b0000100ULL, frame1->function_base);
 }
 TEST_F(GetCallerFrame, CallerPushedRBP) {
   // Functions typically push their %rbp upon entry and set %rbp pointing
   // there.  If stackwalking finds a plausible address for the next frame's
   // %rbp directly below the return address, assume that it is indeed the
   // next frame's %rbp.
   stack_section.start() = 0x8000000080000000ULL;
   uint64_t return_address = 0x50000000b0000110ULL;
   Label frame0_rbp, frame1_sp, frame1_rbp;
   stack_section
     // frame 0
     .Append(16, 0)                      // space
     .D64(0x40000000b0000000ULL)         // junk that's not
     .D64(0x50000000b0000000ULL)         // a return address
     .D64(0x40000000c0001000ULL)         // a couple of plausible addresses
     .D64(0x50000000b000aaaaULL)         // that are not within functions
     .Mark(&frame0_rbp)
     .D64(frame1_rbp)                    // caller-pushed %rbp
     .D64(return_address)                // actual return address
     // frame 1
     .Mark(&frame1_sp)
     .Append(32, 0)                      // body of frame1
     .Mark(&frame1_rbp);                 // end of stack
   RegionFromSection();
   raw_context.rip = 0x40000000c0000200ULL;
   raw_context.rbp = frame0_rbp.Value();
   raw_context.rsp = stack_section.start().Value();
   SetModuleSymbols(&module1,
                    // The youngest frame's function.
                    "FUNC 100 400 10 sasquatch\n");
   SetModuleSymbols(&module2,
                    // The calling frame's function.
                    "FUNC 100 400 10 yeti\n");
   StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
   StackwalkerAMD64 walker(&system_info, &raw_context, &stack_region, &modules,
                           &frame_symbolizer);
   vector<const CodeModule*> modules_without_symbols;
   ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols));
   ASSERT_EQ(0U, modules_without_symbols.size());
   frames = call_stack.frames();
   ASSERT_EQ(2U, frames->size());
   StackFrameAMD64 *frame0 = static_cast<StackFrameAMD64 *>(frames->at(0));
   EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
   ASSERT_EQ(StackFrameAMD64::CONTEXT_VALID_ALL, frame0->context_validity);
   EXPECT_EQ(frame0_rbp.Value(), frame0->context.rbp);
   EXPECT_EQ("sasquatch", frame0->function_name);
   EXPECT_EQ(0x40000000c0000100ULL, frame0->function_base);
   StackFrameAMD64 *frame1 = static_cast<StackFrameAMD64 *>(frames->at(1));
   EXPECT_EQ(StackFrame::FRAME_TRUST_SCAN, frame1->trust);
   ASSERT_EQ((StackFrameAMD64::CONTEXT_VALID_RIP |
              StackFrameAMD64::CONTEXT_VALID_RSP |
              StackFrameAMD64::CONTEXT_VALID_RBP),
             frame1->context_validity);
   EXPECT_EQ(return_address, frame1->context.rip);
   EXPECT_EQ(frame1_sp.Value(), frame1->context.rsp);
   EXPECT_EQ(frame1_rbp.Value(), frame1->context.rbp);
   EXPECT_EQ("yeti", frame1->function_name);
   EXPECT_EQ(0x50000000b0000100ULL, frame1->function_base);
 }
 struct CFIFixture: public StackwalkerAMD64Fixture {
   CFIFixture() {
     // Provide a bunch of STACK CFI records; we'll walk to the caller
     // from every point in this series, expecting to find the same set
     // of register values.
     SetModuleSymbols(&module1,
                      // The youngest frame's function.
                      "FUNC 4000 1000 10 enchiridion\n"
                      // Initially, just a return address.
                      "STACK CFI INIT 4000 100 .cfa: $rsp 8 + .ra: .cfa 8 - ^\n"
                      // Push %rbx.
                      "STACK CFI 4001 .cfa: $rsp 16 + $rbx: .cfa 16 - ^\n"
                      // Save %r12 in %rbx.  Weird, but permitted.
                      "STACK CFI 4002 $r12: $rbx\n"
                      // Allocate frame space, and save %r13.
                      "STACK CFI 4003 .cfa: $rsp 40 + $r13: .cfa 32 - ^\n"
                      // Put the return address in %r13.
                      "STACK CFI 4005 .ra: $r13\n"
                      // Save %rbp, and use it as a frame pointer.
                      "STACK CFI 4006 .cfa: $rbp 16 + $rbp: .cfa 24 - ^\n"
                      // The calling function.
                      "FUNC 5000 1000 10 epictetus\n"
                      // Mark it as end of stack.
                      "STACK CFI INIT 5000 1000 .cfa: $rsp .ra 0\n");
     // Provide some distinctive values for the caller's registers.
     expected.rsp = 0x8000000080000000ULL;
     expected.rip = 0x40000000c0005510ULL;
     expected.rbp = 0x68995b1de4700266ULL;
     expected.rbx = 0x5a5beeb38de23be8ULL;
     expected.r12 = 0xed1b02e8cc0fc79cULL;
     expected.r13 = 0x1d20ad8acacbe930ULL;
     expected.r14 = 0xe94cffc2f7adaa28ULL;
     expected.r15 = 0xb638d17d8da413b5ULL;
     // By default, registers are unchanged.
     raw_context = expected;
   }
   // Walk the stack, using stack_section as the contents of the stack
   // and raw_context as the current register values. (Set
   // raw_context.rsp to the stack's starting address.) Expect two
   // stack frames; in the older frame, expect the callee-saves
   // registers to have values matching those in 'expected'.
   void CheckWalk() {
     RegionFromSection();
     raw_context.rsp = stack_section.start().Value();
     StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
     StackwalkerAMD64 walker(&system_info, &raw_context, &stack_region, &modules,
                             &frame_symbolizer);
     vector<const CodeModule*> modules_without_symbols;
     ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols));
     ASSERT_EQ(0U, modules_without_symbols.size());
     frames = call_stack.frames();
     ASSERT_EQ(2U, frames->size());
     StackFrameAMD64 *frame0 = static_cast<StackFrameAMD64 *>(frames->at(0));
     EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
     ASSERT_EQ(StackFrameAMD64::CONTEXT_VALID_ALL, frame0->context_validity);
     EXPECT_EQ("enchiridion", frame0->function_name);
     EXPECT_EQ(0x40000000c0004000ULL, frame0->function_base);
     StackFrameAMD64 *frame1 = static_cast<StackFrameAMD64 *>(frames->at(1));
     EXPECT_EQ(StackFrame::FRAME_TRUST_CFI, frame1->trust);
     ASSERT_EQ((StackFrameAMD64::CONTEXT_VALID_RIP |
                StackFrameAMD64::CONTEXT_VALID_RSP |
                StackFrameAMD64::CONTEXT_VALID_RBP |
                StackFrameAMD64::CONTEXT_VALID_RBX |
                StackFrameAMD64::CONTEXT_VALID_R12 |
                StackFrameAMD64::CONTEXT_VALID_R13 |
                StackFrameAMD64::CONTEXT_VALID_R14 |
                StackFrameAMD64::CONTEXT_VALID_R15),
               frame1->context_validity);
     EXPECT_EQ(expected.rip, frame1->context.rip);
     EXPECT_EQ(expected.rsp, frame1->context.rsp);
     EXPECT_EQ(expected.rbp, frame1->context.rbp);
     EXPECT_EQ(expected.rbx, frame1->context.rbx);
     EXPECT_EQ(expected.r12, frame1->context.r12);
     EXPECT_EQ(expected.r13, frame1->context.r13);
     EXPECT_EQ(expected.r14, frame1->context.r14);
     EXPECT_EQ(expected.r15, frame1->context.r15);
     EXPECT_EQ("epictetus", frame1->function_name);
   }
   // The values we expect to find for the caller's registers.
   MDRawContextAMD64 expected;
 };
 class CFI: public CFIFixture, public Test { };
 TEST_F(CFI, At4000) {
   Label frame1_rsp = expected.rsp;
   stack_section
     .D64(0x40000000c0005510ULL) // return address
     .Mark(&frame1_rsp);         // This effectively sets stack_section.start().
   raw_context.rip = 0x40000000c0004000ULL;
   CheckWalk();
 }
 TEST_F(CFI, At4001) {
   Label frame1_rsp = expected.rsp;
   stack_section
     .D64(0x5a5beeb38de23be8ULL) // saved %rbx
     .D64(0x40000000c0005510ULL) // return address
     .Mark(&frame1_rsp);         // This effectively sets stack_section.start().
   raw_context.rip = 0x40000000c0004001ULL;
   raw_context.rbx = 0xbe0487d2f9eafe29ULL; // callee's (distinct) %rbx value
   CheckWalk();
 }
 TEST_F(CFI, At4002) {
   Label frame1_rsp = expected.rsp;
   stack_section
     .D64(0x5a5beeb38de23be8ULL) // saved %rbx
     .D64(0x40000000c0005510ULL) // return address
     .Mark(&frame1_rsp);         // This effectively sets stack_section.start().
   raw_context.rip = 0x40000000c0004002ULL;
   raw_context.rbx = 0xed1b02e8cc0fc79cULL; // saved %r12
   raw_context.r12 = 0xb0118de918a4bceaULL; // callee's (distinct) %r12 value
   CheckWalk();
 }
 TEST_F(CFI, At4003) {
   Label frame1_rsp = expected.rsp;
   stack_section
     .D64(0x0e023828dffd4d81ULL) // garbage
     .D64(0x1d20ad8acacbe930ULL) // saved %r13
     .D64(0x319e68b49e3ace0fULL) // garbage
     .D64(0x5a5beeb38de23be8ULL) // saved %rbx
     .D64(0x40000000c0005510ULL) // return address
     .Mark(&frame1_rsp);         // This effectively sets stack_section.start().
   raw_context.rip = 0x40000000c0004003ULL;
   raw_context.rbx = 0xed1b02e8cc0fc79cULL; // saved %r12
   raw_context.r12 = 0x89d04fa804c87a43ULL; // callee's (distinct) %r12
   raw_context.r13 = 0x5118e02cbdb24b03ULL; // callee's (distinct) %r13
   CheckWalk();
 }
 // The results here should be the same as those at module offset 0x4003.
 TEST_F(CFI, At4004) {
   Label frame1_rsp = expected.rsp;
   stack_section
     .D64(0x0e023828dffd4d81ULL) // garbage
     .D64(0x1d20ad8acacbe930ULL) // saved %r13
     .D64(0x319e68b49e3ace0fULL) // garbage
     .D64(0x5a5beeb38de23be8ULL) // saved %rbx
     .D64(0x40000000c0005510ULL) // return address
     .Mark(&frame1_rsp);         // This effectively sets stack_section.start().
   raw_context.rip = 0x40000000c0004004ULL;
   raw_context.rbx = 0xed1b02e8cc0fc79cULL; // saved %r12
   raw_context.r12 = 0x89d04fa804c87a43ULL; // callee's (distinct) %r12
   raw_context.r13 = 0x5118e02cbdb24b03ULL; // callee's (distinct) %r13
   CheckWalk();
 }
 TEST_F(CFI, At4005) {
   Label frame1_rsp = expected.rsp;
   stack_section
     .D64(0x4b516dd035745953ULL) // garbage
     .D64(0x1d20ad8acacbe930ULL) // saved %r13
     .D64(0xa6d445e16ae3d872ULL) // garbage
     .D64(0x5a5beeb38de23be8ULL) // saved %rbx
     .D64(0xaa95fa054aedfbaeULL) // garbage
     .Mark(&frame1_rsp);         // This effectively sets stack_section.start().
   raw_context.rip = 0x40000000c0004005ULL;
   raw_context.rbx = 0xed1b02e8cc0fc79cULL; // saved %r12
   raw_context.r12 = 0x46b1b8868891b34aULL; // callee's %r12
   raw_context.r13 = 0x40000000c0005510ULL; // return address
   CheckWalk();
 }
 TEST_F(CFI, At4006) {
   Label frame0_rbp;
   Label frame1_rsp = expected.rsp;
   stack_section
     .D64(0x043c6dfceb91aa34ULL) // garbage
     .D64(0x1d20ad8acacbe930ULL) // saved %r13
     .D64(0x68995b1de4700266ULL) // saved %rbp
     .Mark(&frame0_rbp)          // frame pointer points here
     .D64(0x5a5beeb38de23be8ULL) // saved %rbx
     .D64(0xf015ee516ad89eabULL) // garbage
     .Mark(&frame1_rsp);         // This effectively sets stack_section.start().
   raw_context.rip = 0x40000000c0004006ULL;
   raw_context.rbp = frame0_rbp.Value();
   raw_context.rbx = 0xed1b02e8cc0fc79cULL; // saved %r12
   raw_context.r12 = 0x26e007b341acfebdULL; // callee's %r12
   raw_context.r13 = 0x40000000c0005510ULL; // return address
   CheckWalk();
 }

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toolkit/crashreporter/google-breakpad/src/processor/stackwalker_amd64_unittest.cc@6474c204b198 (annotated)

toolkit/crashreporter/google-breakpad/src/processor/stackwalker_amd64_unittest.cc