mirror of
https://git.eden-emu.dev/eden-emu/eden.git
synced 2025-10-13 11:47:50 +00:00
Move dead submodules in-tree
Signed-off-by: swurl <swurl@swurl.xyz>
This commit is contained in:
parent
c0cceff365
commit
6c655321e6
GPG key ID:
A5A7629F109C8FD1
4081 changed files with 1185566 additions and 45 deletions
884
externals/breakpad/src/processor/stackwalker_arm64_unittest.cc
vendored
Normal file
884
externals/breakpad/src/processor/stackwalker_arm64_unittest.cc
vendored
Normal file
|
|
@ -0,0 +1,884 @@
|
|||
// Copyright 2010 Google LLC
|
||||
//
|
||||
// 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 LLC 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_arm64_unittest.cc: Unit tests for StackwalkerARM64 class.
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h> // Must come first
|
||||
#endif
|
||||
|
||||
#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_arm64.h"
|
||||
#include "processor/windows_frame_info.h"
|
||||
|
||||
using google_breakpad::BasicSourceLineResolver;
|
||||
using google_breakpad::CallStack;
|
||||
using google_breakpad::CodeModule;
|
||||
using google_breakpad::StackFrameSymbolizer;
|
||||
using google_breakpad::StackFrame;
|
||||
using google_breakpad::StackFrameARM64;
|
||||
using google_breakpad::Stackwalker;
|
||||
using google_breakpad::StackwalkerARM64;
|
||||
using google_breakpad::SystemInfo;
|
||||
using google_breakpad::WindowsFrameInfo;
|
||||
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::AnyNumber;
|
||||
using testing::DoAll;
|
||||
using testing::Return;
|
||||
using testing::SetArgumentPointee;
|
||||
using testing::Test;
|
||||
|
||||
class StackwalkerARM64Fixture {
|
||||
public:
|
||||
StackwalkerARM64Fixture()
|
||||
: stack_section(kLittleEndian),
|
||||
// Give the two modules reasonable standard locations and names
|
||||
// for tests to play with.
|
||||
module1(0x40000000, 0x10000, "module1", "version1"),
|
||||
module2(0x50000000, 0x10000, "module2", "version2") {
|
||||
// Identify the system as an iOS system.
|
||||
system_info.os = "iOS";
|
||||
system_info.os_short = "ios";
|
||||
system_info.cpu = "arm64";
|
||||
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));
|
||||
|
||||
// Avoid GMOCK WARNING "Uninteresting mock function call - returning
|
||||
// directly" for FreeSymbolData().
|
||||
EXPECT_CALL(supplier, FreeSymbolData(_)).Times(AnyNumber());
|
||||
|
||||
// Reset max_frames_scanned since it's static.
|
||||
Stackwalker::set_max_frames_scanned(1024);
|
||||
}
|
||||
|
||||
// Set the Breakpad symbol information that supplier should return for
|
||||
// MODULE to INFO.
|
||||
void SetModuleSymbols(MockCodeModule* module, const string& info) {
|
||||
size_t buffer_size;
|
||||
char *buffer = supplier.CopySymbolDataAndOwnTheCopy(info, &buffer_size);
|
||||
EXPECT_CALL(supplier, GetCStringSymbolData(module, &system_info, _, _, _))
|
||||
.WillRepeatedly(DoAll(SetArgumentPointee<3>(buffer),
|
||||
SetArgumentPointee<4>(buffer_size),
|
||||
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(MDRawContextARM64 *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;
|
||||
MDRawContextARM64 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 SanityCheck: public StackwalkerARM64Fixture, public Test { };
|
||||
|
||||
TEST_F(SanityCheck, NoResolver) {
|
||||
// Since the context's frame pointer is garbage, the stack walk will end after
|
||||
// the first frame.
|
||||
StackFrameSymbolizer frame_symbolizer(NULL, NULL);
|
||||
StackwalkerARM64 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;
|
||||
vector<const CodeModule*> modules_with_corrupt_symbols;
|
||||
ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols,
|
||||
&modules_with_corrupt_symbols));
|
||||
ASSERT_EQ(0U, modules_without_symbols.size());
|
||||
ASSERT_EQ(0U, modules_with_corrupt_symbols.size());
|
||||
frames = call_stack.frames();
|
||||
ASSERT_EQ(1U, frames->size());
|
||||
StackFrameARM64 *frame = static_cast<StackFrameARM64*>(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 GetContextFrame: public StackwalkerARM64Fixture, public Test { };
|
||||
|
||||
// The stackwalker should be able to produce the context frame even
|
||||
// without stack memory present.
|
||||
TEST_F(GetContextFrame, NoStackMemory) {
|
||||
StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
|
||||
StackwalkerARM64 walker(&system_info, &raw_context, NULL, &modules,
|
||||
&frame_symbolizer);
|
||||
vector<const CodeModule*> modules_without_symbols;
|
||||
vector<const CodeModule*> modules_with_corrupt_symbols;
|
||||
ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols,
|
||||
&modules_with_corrupt_symbols));
|
||||
ASSERT_EQ(0U, modules_without_symbols.size());
|
||||
ASSERT_EQ(0U, modules_with_corrupt_symbols.size());
|
||||
frames = call_stack.frames();
|
||||
ASSERT_EQ(1U, frames->size());
|
||||
StackFrameARM64 *frame = static_cast<StackFrameARM64*>(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 StackwalkerARM64Fixture, 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() = 0x80000000;
|
||||
uint64_t return_address1 = 0x50000100;
|
||||
uint64_t return_address2 = 0x50000900;
|
||||
Label frame1_sp, frame2_sp;
|
||||
stack_section
|
||||
// frame 0
|
||||
.Append(16, 0) // space
|
||||
|
||||
.D64(0x40090000) // junk that's not
|
||||
.D64(0x60000000) // a return address
|
||||
|
||||
.D64(return_address1) // actual return address
|
||||
// frame 1
|
||||
.Mark(&frame1_sp)
|
||||
.Append(16, 0) // space
|
||||
|
||||
.D64(0xF0000000) // more junk
|
||||
.D64(0x0000000D)
|
||||
|
||||
.D64(return_address2) // actual return address
|
||||
// frame 2
|
||||
.Mark(&frame2_sp)
|
||||
.Append(64, 0); // end of stack
|
||||
RegionFromSection();
|
||||
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x40005510;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_SP] = stack_section.start().Value();
|
||||
|
||||
StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
|
||||
StackwalkerARM64 walker(&system_info, &raw_context, &stack_region, &modules,
|
||||
&frame_symbolizer);
|
||||
vector<const CodeModule*> modules_without_symbols;
|
||||
vector<const CodeModule*> modules_with_corrupt_symbols;
|
||||
ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols,
|
||||
&modules_with_corrupt_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());
|
||||
ASSERT_EQ(0U, modules_with_corrupt_symbols.size());
|
||||
frames = call_stack.frames();
|
||||
ASSERT_EQ(3U, frames->size());
|
||||
|
||||
StackFrameARM64 *frame0 = static_cast<StackFrameARM64*>(frames->at(0));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
|
||||
ASSERT_EQ(StackFrameARM64::CONTEXT_VALID_ALL,
|
||||
frame0->context_validity);
|
||||
EXPECT_EQ(0, memcmp(&raw_context, &frame0->context, sizeof(raw_context)));
|
||||
|
||||
StackFrameARM64 *frame1 = static_cast<StackFrameARM64*>(frames->at(1));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_SCAN, frame1->trust);
|
||||
ASSERT_EQ((StackFrameARM64::CONTEXT_VALID_PC |
|
||||
StackFrameARM64::CONTEXT_VALID_SP),
|
||||
frame1->context_validity);
|
||||
EXPECT_EQ(return_address1, frame1->context.iregs[MD_CONTEXT_ARM64_REG_PC]);
|
||||
EXPECT_EQ(frame1_sp.Value(), frame1->context.iregs[MD_CONTEXT_ARM64_REG_SP]);
|
||||
|
||||
StackFrameARM64 *frame2 = static_cast<StackFrameARM64*>(frames->at(2));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_SCAN, frame2->trust);
|
||||
ASSERT_EQ((StackFrameARM64::CONTEXT_VALID_PC |
|
||||
StackFrameARM64::CONTEXT_VALID_SP),
|
||||
frame2->context_validity);
|
||||
EXPECT_EQ(return_address2, frame2->context.iregs[MD_CONTEXT_ARM64_REG_PC]);
|
||||
EXPECT_EQ(frame2_sp.Value(), frame2->context.iregs[MD_CONTEXT_ARM64_REG_SP]);
|
||||
}
|
||||
|
||||
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() = 0x80000000;
|
||||
uint64_t return_address = 0x50000200;
|
||||
Label frame1_sp;
|
||||
|
||||
stack_section
|
||||
// frame 0
|
||||
.Append(16, 0) // space
|
||||
|
||||
.D64(0x40090000) // junk that's not
|
||||
.D64(0x60000000) // a return address
|
||||
|
||||
.D64(0x40001000) // a couple of plausible addresses
|
||||
.D64(0x5000F000) // that are not within functions
|
||||
|
||||
.D64(return_address) // actual return address
|
||||
// frame 1
|
||||
.Mark(&frame1_sp)
|
||||
.Append(64, 0); // end of stack
|
||||
RegionFromSection();
|
||||
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x40000200;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_SP] = stack_section.start().Value();
|
||||
|
||||
SetModuleSymbols(&module1,
|
||||
// The youngest frame's function.
|
||||
"FUNC 100 400 10 monotreme\n");
|
||||
SetModuleSymbols(&module2,
|
||||
// The calling frame's function.
|
||||
"FUNC 100 400 10 marsupial\n");
|
||||
|
||||
StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
|
||||
StackwalkerARM64 walker(&system_info, &raw_context, &stack_region, &modules,
|
||||
&frame_symbolizer);
|
||||
vector<const CodeModule*> modules_without_symbols;
|
||||
vector<const CodeModule*> modules_with_corrupt_symbols;
|
||||
ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols,
|
||||
&modules_with_corrupt_symbols));
|
||||
ASSERT_EQ(0U, modules_without_symbols.size());
|
||||
ASSERT_EQ(0U, modules_with_corrupt_symbols.size());
|
||||
frames = call_stack.frames();
|
||||
ASSERT_EQ(2U, frames->size());
|
||||
|
||||
StackFrameARM64 *frame0 = static_cast<StackFrameARM64*>(frames->at(0));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
|
||||
ASSERT_EQ(StackFrameARM64::CONTEXT_VALID_ALL,
|
||||
frame0->context_validity);
|
||||
EXPECT_EQ(0, memcmp(&raw_context, &frame0->context, sizeof(raw_context)));
|
||||
EXPECT_EQ("monotreme", frame0->function_name);
|
||||
EXPECT_EQ(0x40000100ULL, frame0->function_base);
|
||||
|
||||
StackFrameARM64 *frame1 = static_cast<StackFrameARM64*>(frames->at(1));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_SCAN, frame1->trust);
|
||||
ASSERT_EQ((StackFrameARM64::CONTEXT_VALID_PC |
|
||||
StackFrameARM64::CONTEXT_VALID_SP),
|
||||
frame1->context_validity);
|
||||
EXPECT_EQ(return_address, frame1->context.iregs[MD_CONTEXT_ARM64_REG_PC]);
|
||||
EXPECT_EQ(frame1_sp.Value(), frame1->context.iregs[MD_CONTEXT_ARM64_REG_SP]);
|
||||
EXPECT_EQ("marsupial", frame1->function_name);
|
||||
EXPECT_EQ(0x50000100ULL, frame1->function_base);
|
||||
}
|
||||
|
||||
TEST_F(GetCallerFrame, ScanFirstFrame) {
|
||||
// If the stackwalker resorts to stack scanning, it will scan much
|
||||
// farther to find the caller of the context frame.
|
||||
stack_section.start() = 0x80000000;
|
||||
uint64_t return_address1 = 0x50000100;
|
||||
uint64_t return_address2 = 0x50000900;
|
||||
Label frame1_sp, frame2_sp;
|
||||
stack_section
|
||||
// frame 0
|
||||
.Append(32, 0) // space
|
||||
|
||||
.D64(0x40090000) // junk that's not
|
||||
.D64(0x60000000) // a return address
|
||||
|
||||
.Append(96, 0) // more space
|
||||
|
||||
.D64(return_address1) // actual return address
|
||||
// frame 1
|
||||
.Mark(&frame1_sp)
|
||||
.Append(32, 0) // space
|
||||
|
||||
.D64(0xF0000000) // more junk
|
||||
.D64(0x0000000D)
|
||||
|
||||
.Append(336, 0) // more space
|
||||
|
||||
.D64(return_address2) // actual return address
|
||||
// (won't be found)
|
||||
// frame 2
|
||||
.Mark(&frame2_sp)
|
||||
.Append(64, 0); // end of stack
|
||||
RegionFromSection();
|
||||
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x40005510;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_SP] = stack_section.start().Value();
|
||||
|
||||
StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
|
||||
StackwalkerARM64 walker(&system_info, &raw_context, &stack_region, &modules,
|
||||
&frame_symbolizer);
|
||||
vector<const CodeModule*> modules_without_symbols;
|
||||
vector<const CodeModule*> modules_with_corrupt_symbols;
|
||||
ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols,
|
||||
&modules_with_corrupt_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());
|
||||
ASSERT_EQ(0U, modules_with_corrupt_symbols.size());
|
||||
frames = call_stack.frames();
|
||||
ASSERT_EQ(2U, frames->size());
|
||||
|
||||
StackFrameARM64 *frame0 = static_cast<StackFrameARM64*>(frames->at(0));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
|
||||
ASSERT_EQ(StackFrameARM64::CONTEXT_VALID_ALL,
|
||||
frame0->context_validity);
|
||||
EXPECT_EQ(0, memcmp(&raw_context, &frame0->context, sizeof(raw_context)));
|
||||
|
||||
StackFrameARM64 *frame1 = static_cast<StackFrameARM64*>(frames->at(1));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_SCAN, frame1->trust);
|
||||
ASSERT_EQ((StackFrameARM64::CONTEXT_VALID_PC |
|
||||
StackFrameARM64::CONTEXT_VALID_SP),
|
||||
frame1->context_validity);
|
||||
EXPECT_EQ(return_address1, frame1->context.iregs[MD_CONTEXT_ARM64_REG_PC]);
|
||||
EXPECT_EQ(frame1_sp.Value(), frame1->context.iregs[MD_CONTEXT_ARM64_REG_SP]);
|
||||
}
|
||||
|
||||
// Test that set_max_frames_scanned prevents using stack scanning
|
||||
// to find caller frames.
|
||||
TEST_F(GetCallerFrame, ScanningNotAllowed) {
|
||||
// When the stack walker resorts to scanning the stack,
|
||||
// only addresses located within loaded modules are
|
||||
// considered valid return addresses.
|
||||
stack_section.start() = 0x80000000;
|
||||
uint64_t return_address1 = 0x50000100;
|
||||
uint64_t return_address2 = 0x50000900;
|
||||
Label frame1_sp, frame2_sp;
|
||||
stack_section
|
||||
// frame 0
|
||||
.Append(16, 0) // space
|
||||
|
||||
.D64(0x40090000) // junk that's not
|
||||
.D64(0x60000000) // a return address
|
||||
|
||||
.D64(return_address1) // actual return address
|
||||
// frame 1
|
||||
.Mark(&frame1_sp)
|
||||
.Append(16, 0) // space
|
||||
|
||||
.D64(0xF0000000) // more junk
|
||||
.D64(0x0000000D)
|
||||
|
||||
.D64(return_address2) // actual return address
|
||||
// frame 2
|
||||
.Mark(&frame2_sp)
|
||||
.Append(64, 0); // end of stack
|
||||
RegionFromSection();
|
||||
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x40005510;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_SP] = stack_section.start().Value();
|
||||
|
||||
StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
|
||||
StackwalkerARM64 walker(&system_info, &raw_context, &stack_region, &modules,
|
||||
&frame_symbolizer);
|
||||
Stackwalker::set_max_frames_scanned(0);
|
||||
|
||||
vector<const CodeModule*> modules_without_symbols;
|
||||
vector<const CodeModule*> modules_with_corrupt_symbols;
|
||||
ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols,
|
||||
&modules_with_corrupt_symbols));
|
||||
ASSERT_EQ(1U, modules_without_symbols.size());
|
||||
ASSERT_EQ("module1", modules_without_symbols[0]->debug_file());
|
||||
ASSERT_EQ(0U, modules_with_corrupt_symbols.size());
|
||||
frames = call_stack.frames();
|
||||
ASSERT_EQ(1U, frames->size());
|
||||
|
||||
StackFrameARM64 *frame0 = static_cast<StackFrameARM64*>(frames->at(0));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
|
||||
ASSERT_EQ(StackFrameARM64::CONTEXT_VALID_ALL,
|
||||
frame0->context_validity);
|
||||
EXPECT_EQ(0, memcmp(&raw_context, &frame0->context, sizeof(raw_context)));
|
||||
}
|
||||
|
||||
class GetFramesByFramePointer: public StackwalkerARM64Fixture, public Test { };
|
||||
|
||||
TEST_F(GetFramesByFramePointer, OnlyFramePointer) {
|
||||
stack_section.start() = 0x80000000;
|
||||
uint64_t return_address1 = 0x50000100;
|
||||
uint64_t return_address2 = 0x50000900;
|
||||
Label frame1_sp, frame2_sp;
|
||||
Label frame1_fp, frame2_fp;
|
||||
stack_section
|
||||
// frame 0
|
||||
.Append(64, 0) // Whatever values on the stack.
|
||||
.D64(0x0000000D) // junk that's not
|
||||
.D64(0xF0000000) // a return address.
|
||||
|
||||
.Mark(&frame1_fp) // Next fp will point to the next value.
|
||||
.D64(frame2_fp) // Save current frame pointer.
|
||||
.D64(return_address2) // Save current link register.
|
||||
.Mark(&frame1_sp)
|
||||
|
||||
// frame 1
|
||||
.Append(64, 0) // Whatever values on the stack.
|
||||
.D64(0x0000000D) // junk that's not
|
||||
.D64(0xF0000000) // a return address.
|
||||
|
||||
.Mark(&frame2_fp)
|
||||
.D64(0)
|
||||
.D64(0)
|
||||
.Mark(&frame2_sp)
|
||||
|
||||
// frame 2
|
||||
.Append(64, 0) // Whatever values on the stack.
|
||||
.D64(0x0000000D) // junk that's not
|
||||
.D64(0xF0000000); // a return address.
|
||||
RegionFromSection();
|
||||
|
||||
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x40005510;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_LR] = return_address1;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_FP] = frame1_fp.Value();
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_SP] = stack_section.start().Value();
|
||||
|
||||
StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
|
||||
StackwalkerARM64 walker(&system_info, &raw_context,
|
||||
&stack_region, &modules, &frame_symbolizer);
|
||||
|
||||
vector<const CodeModule*> modules_without_symbols;
|
||||
vector<const CodeModule*> modules_with_corrupt_symbols;
|
||||
ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols,
|
||||
&modules_with_corrupt_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());
|
||||
ASSERT_EQ(0U, modules_with_corrupt_symbols.size());
|
||||
frames = call_stack.frames();
|
||||
ASSERT_EQ(3U, frames->size());
|
||||
|
||||
StackFrameARM64 *frame0 = static_cast<StackFrameARM64*>(frames->at(0));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
|
||||
ASSERT_EQ(StackFrameARM64::CONTEXT_VALID_ALL,
|
||||
frame0->context_validity);
|
||||
EXPECT_EQ(0, memcmp(&raw_context, &frame0->context, sizeof(raw_context)));
|
||||
|
||||
StackFrameARM64 *frame1 = static_cast<StackFrameARM64*>(frames->at(1));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_FP, frame1->trust);
|
||||
ASSERT_EQ((StackFrameARM64::CONTEXT_VALID_PC |
|
||||
StackFrameARM64::CONTEXT_VALID_LR |
|
||||
StackFrameARM64::CONTEXT_VALID_FP |
|
||||
StackFrameARM64::CONTEXT_VALID_SP),
|
||||
frame1->context_validity);
|
||||
EXPECT_EQ(return_address1, frame1->context.iregs[MD_CONTEXT_ARM64_REG_PC]);
|
||||
EXPECT_EQ(return_address2, frame1->context.iregs[MD_CONTEXT_ARM64_REG_LR]);
|
||||
EXPECT_EQ(frame1_sp.Value(), frame1->context.iregs[MD_CONTEXT_ARM64_REG_SP]);
|
||||
EXPECT_EQ(frame2_fp.Value(),
|
||||
frame1->context.iregs[MD_CONTEXT_ARM64_REG_FP]);
|
||||
|
||||
StackFrameARM64 *frame2 = static_cast<StackFrameARM64*>(frames->at(2));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_FP, frame2->trust);
|
||||
ASSERT_EQ((StackFrameARM64::CONTEXT_VALID_PC |
|
||||
StackFrameARM64::CONTEXT_VALID_LR |
|
||||
StackFrameARM64::CONTEXT_VALID_FP |
|
||||
StackFrameARM64::CONTEXT_VALID_SP),
|
||||
frame2->context_validity);
|
||||
EXPECT_EQ(return_address2, frame2->context.iregs[MD_CONTEXT_ARM64_REG_PC]);
|
||||
EXPECT_EQ(0U, frame2->context.iregs[MD_CONTEXT_ARM64_REG_LR]);
|
||||
EXPECT_EQ(frame2_sp.Value(), frame2->context.iregs[MD_CONTEXT_ARM64_REG_SP]);
|
||||
EXPECT_EQ(0U, frame2->context.iregs[MD_CONTEXT_ARM64_REG_FP]);
|
||||
}
|
||||
|
||||
struct CFIFixture: public StackwalkerARM64Fixture {
|
||||
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, nothing has been pushed on the stack,
|
||||
// and the return address is still in the link
|
||||
// register (x30).
|
||||
"STACK CFI INIT 4000 100 .cfa: sp 0 + .ra: x30\n"
|
||||
// Push x19, x20, the frame pointer and the link register.
|
||||
"STACK CFI 4001 .cfa: sp 32 + .ra: .cfa -8 + ^"
|
||||
" x19: .cfa -32 + ^ x20: .cfa -24 + ^ "
|
||||
" x29: .cfa -16 + ^\n"
|
||||
// Save x19..x22 in x0..x3: verify that we populate
|
||||
// the youngest frame with all the values we have.
|
||||
"STACK CFI 4002 x19: x0 x20: x1 x21: x2 x22: x3\n"
|
||||
// Restore x19..x22. Save the non-callee-saves register x1.
|
||||
"STACK CFI 4003 .cfa: sp 40 + x1: .cfa 40 - ^"
|
||||
" x19: x19 x20: x20 x21: x21 x22: x22\n"
|
||||
// Move the .cfa back eight bytes, to point at the return
|
||||
// address, and restore the sp explicitly.
|
||||
"STACK CFI 4005 .cfa: sp 32 + x1: .cfa 32 - ^"
|
||||
" x29: .cfa 8 - ^ .ra: .cfa ^ sp: .cfa 8 +\n"
|
||||
// Recover the PC explicitly from a new stack slot;
|
||||
// provide garbage for the .ra.
|
||||
"STACK CFI 4006 .cfa: sp 40 + pc: .cfa 40 - ^\n"
|
||||
|
||||
// The calling function.
|
||||
"FUNC 5000 1000 10 epictetus\n"
|
||||
// Mark it as end of stack.
|
||||
"STACK CFI INIT 5000 1000 .cfa: 0 .ra: 0\n"
|
||||
|
||||
// A function whose CFI makes the stack pointer
|
||||
// go backwards.
|
||||
"FUNC 6000 1000 20 palinal\n"
|
||||
"STACK CFI INIT 6000 1000 .cfa: sp 8 - .ra: x30\n"
|
||||
|
||||
// A function with CFI expressions that can't be
|
||||
// evaluated.
|
||||
"FUNC 7000 1000 20 rhetorical\n"
|
||||
"STACK CFI INIT 7000 1000 .cfa: moot .ra: ambiguous\n");
|
||||
|
||||
// Provide some distinctive values for the caller's registers.
|
||||
expected.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040005510L;
|
||||
expected.iregs[MD_CONTEXT_ARM64_REG_SP] = 0x0000000080000000L;
|
||||
expected.iregs[19] = 0x5e68b5d5b5d55e68L;
|
||||
expected.iregs[20] = 0x34f3ebd1ebd134f3L;
|
||||
expected.iregs[21] = 0x74bca31ea31e74bcL;
|
||||
expected.iregs[22] = 0x16b32dcb2dcb16b3L;
|
||||
expected.iregs[23] = 0x21372ada2ada2137L;
|
||||
expected.iregs[24] = 0x557dbbbbbbbb557dL;
|
||||
expected.iregs[25] = 0x8ca748bf48bf8ca7L;
|
||||
expected.iregs[26] = 0x21f0ab46ab4621f0L;
|
||||
expected.iregs[27] = 0x146732b732b71467L;
|
||||
expected.iregs[28] = 0xa673645fa673645fL;
|
||||
expected.iregs[MD_CONTEXT_ARM64_REG_FP] = 0xe11081128112e110L;
|
||||
|
||||
// Expect CFI to recover all callee-saves registers. Since CFI is the
|
||||
// only stack frame construction technique we have, aside from the
|
||||
// context frame itself, there's no way for us to have a set of valid
|
||||
// registers smaller than this.
|
||||
expected_validity = (StackFrameARM64::CONTEXT_VALID_PC |
|
||||
StackFrameARM64::CONTEXT_VALID_SP |
|
||||
StackFrameARM64::CONTEXT_VALID_X19 |
|
||||
StackFrameARM64::CONTEXT_VALID_X20 |
|
||||
StackFrameARM64::CONTEXT_VALID_X21 |
|
||||
StackFrameARM64::CONTEXT_VALID_X22 |
|
||||
StackFrameARM64::CONTEXT_VALID_X23 |
|
||||
StackFrameARM64::CONTEXT_VALID_X24 |
|
||||
StackFrameARM64::CONTEXT_VALID_X25 |
|
||||
StackFrameARM64::CONTEXT_VALID_X26 |
|
||||
StackFrameARM64::CONTEXT_VALID_X27 |
|
||||
StackFrameARM64::CONTEXT_VALID_X28 |
|
||||
StackFrameARM64::CONTEXT_VALID_FP);
|
||||
|
||||
// By default, context frames provide all registers, as normal.
|
||||
context_frame_validity = StackFrameARM64::CONTEXT_VALID_ALL;
|
||||
|
||||
// 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 the stack
|
||||
// pointer 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.iregs[MD_CONTEXT_ARM64_REG_SP] = stack_section.start().Value();
|
||||
|
||||
StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
|
||||
StackwalkerARM64 walker(&system_info, &raw_context, &stack_region,
|
||||
&modules, &frame_symbolizer);
|
||||
walker.SetContextFrameValidity(context_frame_validity);
|
||||
vector<const CodeModule*> modules_without_symbols;
|
||||
vector<const CodeModule*> modules_with_corrupt_symbols;
|
||||
ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols,
|
||||
&modules_with_corrupt_symbols));
|
||||
ASSERT_EQ(0U, modules_without_symbols.size());
|
||||
ASSERT_EQ(0U, modules_with_corrupt_symbols.size());
|
||||
frames = call_stack.frames();
|
||||
ASSERT_EQ(2U, frames->size());
|
||||
|
||||
StackFrameARM64 *frame0 = static_cast<StackFrameARM64*>(frames->at(0));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
|
||||
ASSERT_EQ(context_frame_validity, frame0->context_validity);
|
||||
EXPECT_EQ("enchiridion", frame0->function_name);
|
||||
EXPECT_EQ(0x0000000040004000UL, frame0->function_base);
|
||||
|
||||
StackFrameARM64 *frame1 = static_cast<StackFrameARM64*>(frames->at(1));
|
||||
EXPECT_EQ(StackFrame::FRAME_TRUST_CFI, frame1->trust);
|
||||
ASSERT_EQ(expected_validity, frame1->context_validity);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X1)
|
||||
EXPECT_EQ(expected.iregs[1], frame1->context.iregs[1]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X19)
|
||||
EXPECT_EQ(expected.iregs[19], frame1->context.iregs[19]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X20)
|
||||
EXPECT_EQ(expected.iregs[20], frame1->context.iregs[20]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X21)
|
||||
EXPECT_EQ(expected.iregs[21], frame1->context.iregs[21]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X22)
|
||||
EXPECT_EQ(expected.iregs[22], frame1->context.iregs[22]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X23)
|
||||
EXPECT_EQ(expected.iregs[23], frame1->context.iregs[23]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X24)
|
||||
EXPECT_EQ(expected.iregs[24], frame1->context.iregs[24]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X25)
|
||||
EXPECT_EQ(expected.iregs[25], frame1->context.iregs[25]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X26)
|
||||
EXPECT_EQ(expected.iregs[26], frame1->context.iregs[26]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X27)
|
||||
EXPECT_EQ(expected.iregs[27], frame1->context.iregs[27]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_X28)
|
||||
EXPECT_EQ(expected.iregs[28], frame1->context.iregs[28]);
|
||||
if (expected_validity & StackFrameARM64::CONTEXT_VALID_FP)
|
||||
EXPECT_EQ(expected.iregs[MD_CONTEXT_ARM64_REG_FP],
|
||||
frame1->context.iregs[MD_CONTEXT_ARM64_REG_FP]);
|
||||
|
||||
// We would never have gotten a frame in the first place if the SP
|
||||
// and PC weren't valid or ->instruction weren't set.
|
||||
EXPECT_EQ(expected.iregs[MD_CONTEXT_ARM64_REG_SP],
|
||||
frame1->context.iregs[MD_CONTEXT_ARM64_REG_SP]);
|
||||
EXPECT_EQ(expected.iregs[MD_CONTEXT_ARM64_REG_PC],
|
||||
frame1->context.iregs[MD_CONTEXT_ARM64_REG_PC]);
|
||||
EXPECT_EQ(expected.iregs[MD_CONTEXT_ARM64_REG_PC],
|
||||
frame1->instruction + 4);
|
||||
EXPECT_EQ("epictetus", frame1->function_name);
|
||||
}
|
||||
|
||||
// The values we expect to find for the caller's registers.
|
||||
MDRawContextARM64 expected;
|
||||
|
||||
// The validity mask for expected.
|
||||
uint64_t expected_validity;
|
||||
|
||||
// The validity mask to impose on the context frame.
|
||||
uint64_t context_frame_validity;
|
||||
};
|
||||
|
||||
class CFI: public CFIFixture, public Test { };
|
||||
|
||||
TEST_F(CFI, At4000) {
|
||||
stack_section.start() = expected.iregs[MD_CONTEXT_ARM64_REG_SP];
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040004000L;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_LR] = 0x0000000040005510L;
|
||||
CheckWalk();
|
||||
}
|
||||
|
||||
TEST_F(CFI, At4001) {
|
||||
Label frame1_sp = expected.iregs[MD_CONTEXT_ARM64_REG_SP];
|
||||
stack_section
|
||||
.D64(0x5e68b5d5b5d55e68L) // saved x19
|
||||
.D64(0x34f3ebd1ebd134f3L) // saved x20
|
||||
.D64(0xe11081128112e110L) // saved fp
|
||||
.D64(0x0000000040005510L) // return address
|
||||
.Mark(&frame1_sp); // This effectively sets stack_section.start().
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040004001L;
|
||||
// distinct callee x19, x20 and fp
|
||||
raw_context.iregs[19] = 0xadc9f635a635adc9L;
|
||||
raw_context.iregs[20] = 0x623135ac35ac6231L;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_FP] = 0x5fc4be14be145fc4L;
|
||||
CheckWalk();
|
||||
}
|
||||
|
||||
// As above, but unwind from a context that has only the PC and SP.
|
||||
TEST_F(CFI, At4001LimitedValidity) {
|
||||
Label frame1_sp = expected.iregs[MD_CONTEXT_ARM64_REG_SP];
|
||||
stack_section
|
||||
.D64(0x5e68b5d5b5d55e68L) // saved x19
|
||||
.D64(0x34f3ebd1ebd134f3L) // saved x20
|
||||
.D64(0xe11081128112e110L) // saved fp
|
||||
.D64(0x0000000040005510L) // return address
|
||||
.Mark(&frame1_sp); // This effectively sets stack_section.start().
|
||||
context_frame_validity =
|
||||
StackFrameARM64::CONTEXT_VALID_PC | StackFrameARM64::CONTEXT_VALID_SP;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040004001L;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_FP] = 0x5fc4be14be145fc4L;
|
||||
|
||||
expected_validity = (StackFrameARM64::CONTEXT_VALID_PC
|
||||
| StackFrameARM64::CONTEXT_VALID_SP
|
||||
| StackFrameARM64::CONTEXT_VALID_FP
|
||||
| StackFrameARM64::CONTEXT_VALID_X19
|
||||
| StackFrameARM64::CONTEXT_VALID_X20);
|
||||
CheckWalk();
|
||||
}
|
||||
|
||||
TEST_F(CFI, At4002) {
|
||||
Label frame1_sp = expected.iregs[MD_CONTEXT_ARM64_REG_SP];
|
||||
stack_section
|
||||
.D64(0xff3dfb81fb81ff3dL) // no longer saved x19
|
||||
.D64(0x34f3ebd1ebd134f3L) // no longer saved x20
|
||||
.D64(0xe11081128112e110L) // saved fp
|
||||
.D64(0x0000000040005510L) // return address
|
||||
.Mark(&frame1_sp); // This effectively sets stack_section.start().
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040004002L;
|
||||
raw_context.iregs[0] = 0x5e68b5d5b5d55e68L; // saved x19
|
||||
raw_context.iregs[1] = 0x34f3ebd1ebd134f3L; // saved x20
|
||||
raw_context.iregs[2] = 0x74bca31ea31e74bcL; // saved x21
|
||||
raw_context.iregs[3] = 0x16b32dcb2dcb16b3L; // saved x22
|
||||
raw_context.iregs[19] = 0xadc9f635a635adc9L; // distinct callee x19
|
||||
raw_context.iregs[20] = 0x623135ac35ac6231L; // distinct callee x20
|
||||
raw_context.iregs[21] = 0xac4543564356ac45L; // distinct callee x21
|
||||
raw_context.iregs[22] = 0x2561562f562f2561L; // distinct callee x22
|
||||
// distinct callee fp
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_FP] = 0x5fc4be14be145fc4L;
|
||||
CheckWalk();
|
||||
}
|
||||
|
||||
TEST_F(CFI, At4003) {
|
||||
Label frame1_sp = expected.iregs[MD_CONTEXT_ARM64_REG_SP];
|
||||
stack_section
|
||||
.D64(0xdd5a48c848c8dd5aL) // saved x1 (even though it's not callee-saves)
|
||||
.D64(0xff3dfb81fb81ff3dL) // no longer saved x19
|
||||
.D64(0x34f3ebd1ebd134f3L) // no longer saved x20
|
||||
.D64(0xe11081128112e110L) // saved fp
|
||||
.D64(0x0000000040005510L) // return address
|
||||
.Mark(&frame1_sp); // This effectively sets stack_section.start().
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040004003L;
|
||||
// distinct callee x1 and fp
|
||||
raw_context.iregs[1] = 0xfb756319fb756319L;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_FP] = 0x5fc4be14be145fc4L;
|
||||
// caller's x1
|
||||
expected.iregs[1] = 0xdd5a48c848c8dd5aL;
|
||||
expected_validity |= StackFrameARM64::CONTEXT_VALID_X1;
|
||||
CheckWalk();
|
||||
}
|
||||
|
||||
// We have no new rule at module offset 0x4004, so the results here should
|
||||
// be the same as those at module offset 0x4003.
|
||||
TEST_F(CFI, At4004) {
|
||||
Label frame1_sp = expected.iregs[MD_CONTEXT_ARM64_REG_SP];
|
||||
stack_section
|
||||
.D64(0xdd5a48c848c8dd5aL) // saved x1 (even though it's not callee-saves)
|
||||
.D64(0xff3dfb81fb81ff3dL) // no longer saved x19
|
||||
.D64(0x34f3ebd1ebd134f3L) // no longer saved x20
|
||||
.D64(0xe11081128112e110L) // saved fp
|
||||
.D64(0x0000000040005510L) // return address
|
||||
.Mark(&frame1_sp); // This effectively sets stack_section.start().
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040004004L;
|
||||
// distinct callee x1 and fp
|
||||
raw_context.iregs[1] = 0xfb756319fb756319L;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_FP] = 0x5fc4be14be145fc4L;
|
||||
// caller's x1
|
||||
expected.iregs[1] = 0xdd5a48c848c8dd5aL;
|
||||
expected_validity |= StackFrameARM64::CONTEXT_VALID_X1;
|
||||
CheckWalk();
|
||||
}
|
||||
|
||||
// Here we move the .cfa, but provide an explicit rule to recover the SP,
|
||||
// so again there should be no change in the registers recovered.
|
||||
TEST_F(CFI, At4005) {
|
||||
Label frame1_sp = expected.iregs[MD_CONTEXT_ARM64_REG_SP];
|
||||
stack_section
|
||||
.D64(0xdd5a48c848c8dd5aL) // saved x1 (even though it's not callee-saves)
|
||||
.D64(0xff3dfb81fb81ff3dL) // no longer saved x19
|
||||
.D64(0x34f3ebd1ebd134f3L) // no longer saved x20
|
||||
.D64(0xe11081128112e110L) // saved fp
|
||||
.D64(0x0000000040005510L) // return address
|
||||
.Mark(&frame1_sp); // This effectively sets stack_section.start().
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040004005L;
|
||||
raw_context.iregs[1] = 0xfb756319fb756319L; // distinct callee x1
|
||||
expected.iregs[1] = 0xdd5a48c848c8dd5aL; // caller's x1
|
||||
expected_validity |= StackFrameARM64::CONTEXT_VALID_X1;
|
||||
CheckWalk();
|
||||
}
|
||||
|
||||
// Here we provide an explicit rule for the PC, and have the saved .ra be
|
||||
// bogus.
|
||||
TEST_F(CFI, At4006) {
|
||||
Label frame1_sp = expected.iregs[MD_CONTEXT_ARM64_REG_SP];
|
||||
stack_section
|
||||
.D64(0x0000000040005510L) // saved pc
|
||||
.D64(0xdd5a48c848c8dd5aL) // saved x1 (even though it's not callee-saves)
|
||||
.D64(0xff3dfb81fb81ff3dL) // no longer saved x19
|
||||
.D64(0x34f3ebd1ebd134f3L) // no longer saved x20
|
||||
.D64(0xe11081128112e110L) // saved fp
|
||||
.D64(0xf8d157835783f8d1L) // .ra rule recovers this, which is garbage
|
||||
.Mark(&frame1_sp); // This effectively sets stack_section.start().
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040004006L;
|
||||
raw_context.iregs[1] = 0xfb756319fb756319L; // distinct callee x1
|
||||
expected.iregs[1] = 0xdd5a48c848c8dd5aL; // caller's x1
|
||||
expected_validity |= StackFrameARM64::CONTEXT_VALID_X1;
|
||||
CheckWalk();
|
||||
}
|
||||
|
||||
// Check that we reject rules that would cause the stack pointer to
|
||||
// move in the wrong direction.
|
||||
TEST_F(CFI, RejectBackwards) {
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040006000L;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_SP] = 0x0000000080000000L;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_LR] = 0x0000000040005510L;
|
||||
StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
|
||||
StackwalkerARM64 walker(&system_info, &raw_context, &stack_region, &modules,
|
||||
&frame_symbolizer);
|
||||
vector<const CodeModule*> modules_without_symbols;
|
||||
vector<const CodeModule*> modules_with_corrupt_symbols;
|
||||
ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols,
|
||||
&modules_with_corrupt_symbols));
|
||||
ASSERT_EQ(0U, modules_without_symbols.size());
|
||||
ASSERT_EQ(0U, modules_with_corrupt_symbols.size());
|
||||
frames = call_stack.frames();
|
||||
ASSERT_EQ(1U, frames->size());
|
||||
}
|
||||
|
||||
// Check that we reject rules whose expressions' evaluation fails.
|
||||
TEST_F(CFI, RejectBadExpressions) {
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_PC] = 0x0000000040007000L;
|
||||
raw_context.iregs[MD_CONTEXT_ARM64_REG_SP] = 0x0000000080000000L;
|
||||
StackFrameSymbolizer frame_symbolizer(&supplier, &resolver);
|
||||
StackwalkerARM64 walker(&system_info, &raw_context, &stack_region, &modules,
|
||||
&frame_symbolizer);
|
||||
vector<const CodeModule*> modules_without_symbols;
|
||||
vector<const CodeModule*> modules_with_corrupt_symbols;
|
||||
ASSERT_TRUE(walker.Walk(&call_stack, &modules_without_symbols,
|
||||
&modules_with_corrupt_symbols));
|
||||
ASSERT_EQ(0U, modules_without_symbols.size());
|
||||
ASSERT_EQ(0U, modules_with_corrupt_symbols.size());
|
||||
frames = call_stack.frames();
|
||||
ASSERT_EQ(1U, frames->size());
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue