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Support for .raSearch in the x86 stackwalker

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Patch by Benjamin Smedberg <bsmedberg@gmail.com>


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@927 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
mark@chromium.org
2012-02-23 22:56:53 +00:00
parent 26c31918f7
commit 84a55c5a72
3 changed files with 88 additions and 7 deletions
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61
src/processor/stackwalker_x86_unittest.cc
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@@ -399,6 +399,67 @@ TEST_F(GetCallerFrame, WindowsFrameData) {
EXPECT_EQ(NULL, frame1->windows_frame_info);
}
// Use Windows frame data (a "STACK WIN 4" record, from a
// FrameTypeFrameData DIA record) to walk a stack frame where the stack
// is aligned and we must search
TEST_F(GetCallerFrame, WindowsFrameDataAligned) {
SetModuleSymbols(&module1,
"STACK WIN 4 aa85 176 0 0 4 4 8 0 1"
" $T1 .raSearch ="
" $T0 $T1 4 - 8 @ ="
" $ebp $T1 4 - ^ ="
" $eip $T1 ^ ="
" $esp $T1 4 + =");
Label frame1_esp, frame1_ebp;
stack_section.start() = 0x80000000;
stack_section
// frame 0
.D32(0x0ffa0ffa) // unused saved register
.D32(0xdeaddead) // locals
.D32(0xbeefbeef)
.D32(0) // 8-byte alignment
.D32(frame1_ebp)
.D32(0x5000129d) // return address
// frame 1
.Mark(&frame1_esp)
.D32(0x1) // parameter
.Mark(&frame1_ebp)
.D32(0) // saved %ebp (stack end)
.D32(0); // saved %eip (stack end)
RegionFromSection();
raw_context.eip = 0x4000aa85;
raw_context.esp = stack_section.start().Value();
raw_context.ebp = 0xf052c1de; // should not be needed to walk frame
StackwalkerX86 walker(&system_info, &raw_context, &stack_region, &modules,
&supplier, &resolver);
ASSERT_TRUE(walker.Walk(&call_stack));
frames = call_stack.frames();
ASSERT_EQ(2U, frames->size());
StackFrameX86 *frame0 = static_cast<StackFrameX86 *>(frames->at(0));
EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
ASSERT_EQ(StackFrameX86::CONTEXT_VALID_ALL, frame0->context_validity);
EXPECT_EQ(0x4000aa85U, frame0->instruction);
EXPECT_EQ(0x4000aa85U, frame0->context.eip);
EXPECT_EQ(stack_section.start().Value(), frame0->context.esp);
EXPECT_EQ(0xf052c1deU, frame0->context.ebp);
EXPECT_TRUE(frame0->windows_frame_info != NULL);
StackFrameX86 *frame1 = static_cast<StackFrameX86 *>(frames->at(1));
EXPECT_EQ(StackFrame::FRAME_TRUST_CFI, frame1->trust);
ASSERT_EQ((StackFrameX86::CONTEXT_VALID_EIP
| StackFrameX86::CONTEXT_VALID_ESP
| StackFrameX86::CONTEXT_VALID_EBP),
frame1->context_validity);
EXPECT_EQ(0x5000129dU, frame1->instruction + 1);
EXPECT_EQ(0x5000129dU, frame1->context.eip);
EXPECT_EQ(frame1_esp.Value(), frame1->context.esp);
EXPECT_EQ(frame1_ebp.Value(), frame1->context.ebp);
EXPECT_EQ(NULL, frame1->windows_frame_info);
}
// Use Windows frame data (a "STACK WIN 4" record, from a
// FrameTypeFrameData DIA record) to walk a frame, and depend on the
// parameter size from the callee as well.