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-rw-r--r--src/google_breakpad/common/minidump_cpu_arm.h9
-rw-r--r--src/processor/stackwalker.cc8
-rw-r--r--src/processor/stackwalker_arm.cc79
-rw-r--r--src/processor/stackwalker_arm.h12
-rw-r--r--src/processor/stackwalker_arm_unittest.cc202
5 files changed, 280 insertions, 30 deletions
diff --git a/src/google_breakpad/common/minidump_cpu_arm.h b/src/google_breakpad/common/minidump_cpu_arm.h
index aa1c88f5..dd071293 100644
--- a/src/google_breakpad/common/minidump_cpu_arm.h
+++ b/src/google_breakpad/common/minidump_cpu_arm.h
@@ -120,10 +120,11 @@ typedef struct {
* purpose.
*/
enum MDARMRegisterNumbers {
- MD_CONTEXT_ARM_REG_FP = 11,
- MD_CONTEXT_ARM_REG_SP = 13,
- MD_CONTEXT_ARM_REG_LR = 14,
- MD_CONTEXT_ARM_REG_PC = 15
+ MD_CONTEXT_ARM_REG_IOS_FP = 7,
+ MD_CONTEXT_ARM_REG_FP = 11,
+ MD_CONTEXT_ARM_REG_SP = 13,
+ MD_CONTEXT_ARM_REG_LR = 14,
+ MD_CONTEXT_ARM_REG_PC = 15
};
/* For (MDRawContextARM).context_flags. These values indicate the type of
diff --git a/src/processor/stackwalker.cc b/src/processor/stackwalker.cc
index 9ddb60ae..2bd333ac 100644
--- a/src/processor/stackwalker.cc
+++ b/src/processor/stackwalker.cc
@@ -44,6 +44,7 @@
#include "google_breakpad/processor/source_line_resolver_interface.h"
#include "google_breakpad/processor/stack_frame.h"
#include "google_breakpad/processor/symbol_supplier.h"
+#include "google_breakpad/processor/system_info.h"
#include "processor/linked_ptr.h"
#include "processor/logging.h"
#include "processor/scoped_ptr.h"
@@ -187,10 +188,13 @@ Stackwalker* Stackwalker::StackwalkerForCPU(
break;
case MD_CONTEXT_ARM:
+ int fp_register = -1;
+ if (system_info->os_short == "ios")
+ fp_register = MD_CONTEXT_ARM_REG_IOS_FP;
cpu_stackwalker = new StackwalkerARM(system_info,
context->GetContextARM(),
- memory, modules, supplier,
- resolver);
+ fp_register, memory, modules,
+ supplier, resolver);
break;
}
diff --git a/src/processor/stackwalker_arm.cc b/src/processor/stackwalker_arm.cc
index 3b91caff..0a3c522d 100644
--- a/src/processor/stackwalker_arm.cc
+++ b/src/processor/stackwalker_arm.cc
@@ -33,7 +33,6 @@
//
// Author: Mark Mentovai, Ted Mielczarek, Jim Blandy
-
#include "google_breakpad/processor/call_stack.h"
#include "google_breakpad/processor/memory_region.h"
#include "google_breakpad/processor/source_line_resolver_interface.h"
@@ -48,12 +47,13 @@ namespace google_breakpad {
StackwalkerARM::StackwalkerARM(const SystemInfo *system_info,
const MDRawContextARM *context,
+ int fp_register,
MemoryRegion *memory,
const CodeModules *modules,
SymbolSupplier *supplier,
SourceLineResolverInterface *resolver)
: Stackwalker(system_info, memory, modules, supplier, resolver),
- context_(context),
+ context_(context), fp_register_(fp_register),
context_frame_validity_(StackFrameARM::CONTEXT_VALID_ALL) { }
@@ -70,7 +70,7 @@ StackFrame* StackwalkerARM::GetContextFrame() {
frame->context = *context_;
frame->context_validity = context_frame_validity_;
frame->trust = StackFrame::FRAME_TRUST_CONTEXT;
- frame->instruction = frame->context.iregs[15];
+ frame->instruction = frame->context.iregs[MD_CONTEXT_ARM_REG_PC];
return frame;
}
@@ -125,8 +125,18 @@ StackFrameARM *StackwalkerARM::GetCallerByCFIFrameInfo(
CFIFrameInfo::RegisterValueMap<u_int32_t>::iterator entry =
caller_registers.find(".ra");
if (entry != caller_registers.end()) {
- frame->context_validity |= StackFrameARM::CONTEXT_VALID_PC;
- frame->context.iregs[MD_CONTEXT_ARM_REG_PC] = entry->second;
+ if (fp_register_ == -1) {
+ frame->context_validity |= StackFrameARM::CONTEXT_VALID_PC;
+ frame->context.iregs[MD_CONTEXT_ARM_REG_PC] = entry->second;
+ } else {
+ // The CFI updated the link register and not the program counter.
+ // Handle getting the program counter from the link register.
+ frame->context_validity |= StackFrameARM::CONTEXT_VALID_PC;
+ frame->context_validity |= StackFrameARM::CONTEXT_VALID_LR;
+ frame->context.iregs[MD_CONTEXT_ARM_REG_LR] = entry->second;
+ frame->context.iregs[MD_CONTEXT_ARM_REG_PC] =
+ last_frame->context.iregs[MD_CONTEXT_ARM_REG_LR];
+ }
}
}
// If the CFI doesn't recover the SP explicitly, then use .cfa.
@@ -154,7 +164,7 @@ StackFrameARM *StackwalkerARM::GetCallerByStackScan(
StackFrameARM *last_frame = static_cast<StackFrameARM *>(frames.back());
u_int32_t last_sp = last_frame->context.iregs[MD_CONTEXT_ARM_REG_SP];
u_int32_t caller_sp, caller_pc;
-
+
if (!ScanForReturnAddress(last_sp, &caller_sp, &caller_pc)) {
// No plausible return address was found.
return NULL;
@@ -179,6 +189,52 @@ StackFrameARM *StackwalkerARM::GetCallerByStackScan(
return frame;
}
+StackFrameARM *StackwalkerARM::GetCallerByFramePointer(
+ const vector<StackFrame *> &frames) {
+ StackFrameARM *last_frame = static_cast<StackFrameARM *>(frames.back());
+
+ if (!(last_frame->context_validity &
+ StackFrameARM::RegisterValidFlag(fp_register_))) {
+ return NULL;
+ }
+
+ u_int32_t last_fp = last_frame->context.iregs[fp_register_];
+
+ u_int32_t caller_fp = 0;
+ if (last_fp && !memory_->GetMemoryAtAddress(last_fp, &caller_fp)) {
+ BPLOG(ERROR) << "Unable to read caller_fp from last_fp: 0x"
+ << std::hex << last_fp;
+ return NULL;
+ }
+
+ u_int32_t caller_lr = 0;
+ if (last_fp && !memory_->GetMemoryAtAddress(last_fp + 4, &caller_lr)) {
+ BPLOG(ERROR) << "Unable to read caller_lr from last_fp + 4: 0x"
+ << std::hex << (last_fp + 4);
+ return NULL;
+ }
+
+ u_int32_t caller_sp = last_fp ? last_fp + 8 :
+ last_frame->context.iregs[MD_CONTEXT_ARM_REG_SP];
+
+ // Create a new stack frame (ownership will be transferred to the caller)
+ // and fill it in.
+ StackFrameARM *frame = new StackFrameARM();
+
+ frame->trust = StackFrame::FRAME_TRUST_FP;
+ frame->context = last_frame->context;
+ frame->context.iregs[fp_register_] = caller_fp;
+ frame->context.iregs[MD_CONTEXT_ARM_REG_SP] = caller_sp;
+ frame->context.iregs[MD_CONTEXT_ARM_REG_PC] =
+ last_frame->context.iregs[MD_CONTEXT_ARM_REG_LR];
+ frame->context.iregs[MD_CONTEXT_ARM_REG_LR] = caller_lr;
+ frame->context_validity = StackFrameARM::CONTEXT_VALID_PC |
+ StackFrameARM::CONTEXT_VALID_LR |
+ StackFrameARM::RegisterValidFlag(fp_register_) |
+ StackFrameARM::CONTEXT_VALID_SP;
+ return frame;
+}
+
StackFrame* StackwalkerARM::GetCallerFrame(const CallStack *stack) {
if (!memory_ || !stack) {
BPLOG(ERROR) << "Can't get caller frame without memory or stack";
@@ -196,10 +252,13 @@ StackFrame* StackwalkerARM::GetCallerFrame(const CallStack *stack) {
frame.reset(GetCallerByCFIFrameInfo(frames, cfi_frame_info.get()));
// If CFI failed, or there wasn't CFI available, fall back
- // to stack scanning.
- if (!frame.get()) {
+ // to frame pointer, if this is configured.
+ if (fp_register_ >= 0 && !frame.get())
+ frame.reset(GetCallerByFramePointer(frames));
+
+ // If everuthing failed, fall back to stack scanning.
+ if (!frame.get())
frame.reset(GetCallerByStackScan(frames));
- }
// If nothing worked, tell the caller.
if (!frame.get())
@@ -225,7 +284,7 @@ StackFrame* StackwalkerARM::GetCallerFrame(const CallStack *stack) {
// match up with the line that contains the function call. Callers that
// require the exact return address value may access
// frame->context.iregs[MD_CONTEXT_ARM_REG_PC].
- frame->instruction = frame->context.iregs[MD_CONTEXT_ARM_REG_PC] - 1;
+ frame->instruction = frame->context.iregs[MD_CONTEXT_ARM_REG_PC] - 2;
return frame.release();
}
diff --git a/src/processor/stackwalker_arm.h b/src/processor/stackwalker_arm.h
index 830579b2..5390c752 100644
--- a/src/processor/stackwalker_arm.h
+++ b/src/processor/stackwalker_arm.h
@@ -40,7 +40,6 @@
#ifndef PROCESSOR_STACKWALKER_ARM_H__
#define PROCESSOR_STACKWALKER_ARM_H__
-
#include "google_breakpad/common/breakpad_types.h"
#include "google_breakpad/common/minidump_format.h"
#include "google_breakpad/processor/stackwalker.h"
@@ -57,6 +56,7 @@ class StackwalkerARM : public Stackwalker {
// to the base Stackwalker constructor.
StackwalkerARM(const SystemInfo *system_info,
const MDRawContextARM *context,
+ int fp_register,
MemoryRegion *memory,
const CodeModules *modules,
SymbolSupplier *supplier,
@@ -78,8 +78,12 @@ class StackwalkerARM : public Stackwalker {
StackFrameARM *GetCallerByCFIFrameInfo(const vector<StackFrame *> &frames,
CFIFrameInfo *cfi_frame_info);
+ // Use the frame pointer. The caller takes ownership of the returned frame.
+ // Return NULL on failure.
+ StackFrameARM *GetCallerByFramePointer(const vector<StackFrame *> &frames);
+
// Scan the stack for plausible return addresses. The caller takes ownership
- // of the returned frame. Return NULL on failure.
+ // of the returned frame. Return NULL on failure.
StackFrameARM *GetCallerByStackScan(const vector<StackFrame *> &frames);
// Stores the CPU context corresponding to the youngest stack frame, to
@@ -90,6 +94,10 @@ class StackwalkerARM : public Stackwalker {
// CONTEXT_VALID_ALL in real use; it is only changeable for the sake of
// unit tests.
int context_frame_validity_;
+
+ // The register to use a as frame pointer. The value is -1 if frame pointer
+ // cannot be used.
+ int fp_register_;
};
diff --git a/src/processor/stackwalker_arm_unittest.cc b/src/processor/stackwalker_arm_unittest.cc
index cb7ce631..6a623c27 100644
--- a/src/processor/stackwalker_arm_unittest.cc
+++ b/src/processor/stackwalker_arm_unittest.cc
@@ -116,7 +116,7 @@ class StackwalkerARMFixture {
for (size_t i = 0; i < sizeof(*raw_context); i++)
reinterpret_cast<u_int8_t *>(raw_context)[i] = (x += 17);
}
-
+
SystemInfo system_info;
MDRawContextARM raw_context;
Section stack_section;
@@ -136,7 +136,7 @@ TEST_F(SanityCheck, NoResolver) {
// Since we have no call frame information, and all unwinding
// requires call frame information, the stack walk will end after
// the first frame.
- StackwalkerARM walker(&system_info, &raw_context, &stack_region, &modules,
+ StackwalkerARM walker(&system_info, &raw_context, -1, &stack_region, &modules,
NULL, NULL);
// This should succeed even without a resolver or supplier.
ASSERT_TRUE(walker.Walk(&call_stack));
@@ -154,7 +154,7 @@ TEST_F(GetContextFrame, Simple) {
// Since we have no call frame information, and all unwinding
// requires call frame information, the stack walk will end after
// the first frame.
- StackwalkerARM walker(&system_info, &raw_context, &stack_region, &modules,
+ StackwalkerARM walker(&system_info, &raw_context, -1, &stack_region, &modules,
&supplier, &resolver);
ASSERT_TRUE(walker.Walk(&call_stack));
frames = call_stack.frames();
@@ -201,7 +201,7 @@ TEST_F(GetCallerFrame, ScanWithoutSymbols) {
raw_context.iregs[MD_CONTEXT_ARM_REG_PC] = 0x40005510;
raw_context.iregs[MD_CONTEXT_ARM_REG_SP] = stack_section.start().Value();
- StackwalkerARM walker(&system_info, &raw_context, &stack_region, &modules,
+ StackwalkerARM walker(&system_info, &raw_context, -1, &stack_region, &modules,
&supplier, &resolver);
ASSERT_TRUE(walker.Walk(&call_stack));
frames = call_stack.frames();
@@ -264,7 +264,7 @@ TEST_F(GetCallerFrame, ScanWithFunctionSymbols) {
// The calling frame's function.
"FUNC 100 400 10 marsupial\n");
- StackwalkerARM walker(&system_info, &raw_context, &stack_region, &modules,
+ StackwalkerARM walker(&system_info, &raw_context, -1, &stack_region, &modules,
&supplier, &resolver);
ASSERT_TRUE(walker.Walk(&call_stack));
frames = call_stack.frames();
@@ -374,8 +374,8 @@ struct CFIFixture: public StackwalkerARMFixture {
RegionFromSection();
raw_context.iregs[MD_CONTEXT_ARM_REG_SP] = stack_section.start().Value();
- StackwalkerARM walker(&system_info, &raw_context, &stack_region, &modules,
- &supplier, &resolver);
+ StackwalkerARM walker(&system_info, &raw_context, -1, &stack_region,
+ &modules, &supplier, &resolver);
walker.SetContextFrameValidity(context_frame_validity);
ASSERT_TRUE(walker.Walk(&call_stack));
frames = call_stack.frames();
@@ -417,7 +417,7 @@ struct CFIFixture: public StackwalkerARMFixture {
EXPECT_EQ(expected.iregs[MD_CONTEXT_ARM_REG_PC],
frame1->context.iregs[MD_CONTEXT_ARM_REG_PC]);
EXPECT_EQ(expected.iregs[MD_CONTEXT_ARM_REG_PC],
- frame1->instruction + 1);
+ frame1->instruction + 2);
EXPECT_EQ("epictetus", frame1->function_name);
}
@@ -564,9 +564,9 @@ TEST_F(CFI, At4006) {
// move in the wrong direction.
TEST_F(CFI, RejectBackwards) {
raw_context.iregs[MD_CONTEXT_ARM_REG_PC] = 0x40006000;
- raw_context.iregs[MD_CONTEXT_ARM_REG_SP] = 0x80000000;
+ raw_context.iregs[MD_CONTEXT_ARM_REG_SP] = 0x80000000;
raw_context.iregs[MD_CONTEXT_ARM_REG_LR] = 0x40005510;
- StackwalkerARM walker(&system_info, &raw_context, &stack_region, &modules,
+ StackwalkerARM walker(&system_info, &raw_context, -1, &stack_region, &modules,
&supplier, &resolver);
ASSERT_TRUE(walker.Walk(&call_stack));
frames = call_stack.frames();
@@ -576,11 +576,189 @@ TEST_F(CFI, RejectBackwards) {
// Check that we reject rules whose expressions' evaluation fails.
TEST_F(CFI, RejectBadExpressions) {
raw_context.iregs[MD_CONTEXT_ARM_REG_PC] = 0x40007000;
- raw_context.iregs[MD_CONTEXT_ARM_REG_SP] = 0x80000000;
- StackwalkerARM walker(&system_info, &raw_context, &stack_region, &modules,
+ raw_context.iregs[MD_CONTEXT_ARM_REG_SP] = 0x80000000;
+ StackwalkerARM walker(&system_info, &raw_context, -1, &stack_region, &modules,
&supplier, &resolver);
ASSERT_TRUE(walker.Walk(&call_stack));
frames = call_stack.frames();
ASSERT_EQ(1U, frames->size());
}
+class StackwalkerARMFixtureIOS : public StackwalkerARMFixture {
+ public:
+ StackwalkerARMFixtureIOS() {
+ system_info.os = "iOS";
+ system_info.os_short = "ios";
+ }
+};
+
+class GetFramesByFramePointer: public StackwalkerARMFixtureIOS, public Test { };
+
+TEST_F(GetFramesByFramePointer, OnlyFramePointer) {
+ stack_section.start() = 0x80000000;
+ u_int32_t return_address1 = 0x50000100;
+ u_int32_t return_address2 = 0x50000900;
+ Label frame1_sp, frame2_sp;
+ Label frame1_fp, frame2_fp;
+ stack_section
+ // frame 0
+ .Append(32, 0) // Whatever values on the stack.
+ .D32(0x0000000D) // junk that's not
+ .D32(0xF0000000) // a return address.
+
+ .Mark(&frame1_fp) // Next fp will point to the next value.
+ .D32(frame2_fp) // Save current frame pointer.
+ .D32(return_address2) // Save current link register.
+ .Mark(&frame1_sp)
+
+ // frame 1
+ .Append(32, 0) // Whatever values on the stack.
+ .D32(0x0000000D) // junk that's not
+ .D32(0xF0000000) // a return address.
+
+ .Mark(&frame2_fp)
+ .D32(0)
+ .D32(0)
+ .Mark(&frame2_sp)
+
+ // frame 2
+ .Append(32, 0) // Whatever values on the stack.
+ .D32(0x0000000D) // junk that's not
+ .D32(0xF0000000); // a return address.
+ RegionFromSection();
+
+
+ raw_context.iregs[MD_CONTEXT_ARM_REG_PC] = 0x40005510;
+ raw_context.iregs[MD_CONTEXT_ARM_REG_LR] = return_address1;
+ raw_context.iregs[MD_CONTEXT_ARM_REG_IOS_FP] = frame1_fp.Value();
+ raw_context.iregs[MD_CONTEXT_ARM_REG_SP] = stack_section.start().Value();
+
+ StackwalkerARM walker(&system_info, &raw_context, MD_CONTEXT_ARM_REG_IOS_FP,
+ &stack_region, &modules, &supplier, &resolver);
+
+ ASSERT_TRUE(walker.Walk(&call_stack));
+ frames = call_stack.frames();
+ ASSERT_EQ(3U, frames->size());
+
+ StackFrameARM *frame0 = static_cast<StackFrameARM *>(frames->at(0));
+ EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
+ ASSERT_EQ(StackFrameARM::CONTEXT_VALID_ALL, frame0->context_validity);
+ EXPECT_EQ(0, memcmp(&raw_context, &frame0->context, sizeof(raw_context)));
+
+ StackFrameARM *frame1 = static_cast<StackFrameARM *>(frames->at(1));
+ EXPECT_EQ(StackFrame::FRAME_TRUST_FP, frame1->trust);
+ ASSERT_EQ((StackFrameARM::CONTEXT_VALID_PC |
+ StackFrameARM::CONTEXT_VALID_LR |
+ StackFrameARM::RegisterValidFlag(MD_CONTEXT_ARM_REG_IOS_FP) |
+ StackFrameARM::CONTEXT_VALID_SP),
+ frame1->context_validity);
+ EXPECT_EQ(return_address1, frame1->context.iregs[MD_CONTEXT_ARM_REG_PC]);
+ EXPECT_EQ(return_address2, frame1->context.iregs[MD_CONTEXT_ARM_REG_LR]);
+ EXPECT_EQ(frame1_sp.Value(), frame1->context.iregs[MD_CONTEXT_ARM_REG_SP]);
+ EXPECT_EQ(frame2_fp.Value(),
+ frame1->context.iregs[MD_CONTEXT_ARM_REG_IOS_FP]);
+
+ StackFrameARM *frame2 = static_cast<StackFrameARM *>(frames->at(2));
+ EXPECT_EQ(StackFrame::FRAME_TRUST_FP, frame2->trust);
+ ASSERT_EQ((StackFrameARM::CONTEXT_VALID_PC |
+ StackFrameARM::CONTEXT_VALID_LR |
+ StackFrameARM::RegisterValidFlag(MD_CONTEXT_ARM_REG_IOS_FP) |
+ StackFrameARM::CONTEXT_VALID_SP),
+ frame2->context_validity);
+ EXPECT_EQ(return_address2, frame2->context.iregs[MD_CONTEXT_ARM_REG_PC]);
+ EXPECT_EQ(0, frame2->context.iregs[MD_CONTEXT_ARM_REG_LR]);
+ EXPECT_EQ(frame2_sp.Value(), frame2->context.iregs[MD_CONTEXT_ARM_REG_SP]);
+ EXPECT_EQ(0, frame2->context.iregs[MD_CONTEXT_ARM_REG_IOS_FP]);
+}
+
+TEST_F(GetFramesByFramePointer, FramePointerAndCFI) {
+ // Provide the standatd STACK CFI records that is obtained when exmining an
+ // executable produced by XCode.
+ SetModuleSymbols(&module1,
+ // Adding a function in CFI.
+ "FUNC 4000 1000 10 enchiridion\n"
+
+ "STACK CFI INIT 4000 100 .cfa: sp 0 + .ra: lr\n"
+ "STACK CFI 4001 .cfa: sp 8 + .ra: .cfa -4 + ^"
+ " r7: .cfa -8 + ^\n"
+ "STACK CFI 4002 .cfa: r7 8 +\n"
+ );
+
+ stack_section.start() = 0x80000000;
+ u_int32_t return_address1 = 0x40004010;
+ u_int32_t return_address2 = 0x50000900;
+ Label frame1_sp, frame2_sp;
+ Label frame1_fp, frame2_fp;
+ stack_section
+ // frame 0
+ .Append(32, 0) // Whatever values on the stack.
+ .D32(0x0000000D) // junk that's not
+ .D32(0xF0000000) // a return address.
+
+ .Mark(&frame1_fp) // Next fp will point to the next value.
+ .D32(frame2_fp) // Save current frame pointer.
+ .D32(return_address2) // Save current link register.
+ .Mark(&frame1_sp)
+
+ // frame 1
+ .Append(32, 0) // Whatever values on the stack.
+ .D32(0x0000000D) // junk that's not
+ .D32(0xF0000000) // a return address.
+
+ .Mark(&frame2_fp)
+ .D32(0)
+ .D32(0)
+ .Mark(&frame2_sp)
+
+ // frame 2
+ .Append(32, 0) // Whatever values on the stack.
+ .D32(0x0000000D) // junk that's not
+ .D32(0xF0000000); // a return address.
+ RegionFromSection();
+
+
+ raw_context.iregs[MD_CONTEXT_ARM_REG_PC] = 0x50000400;
+ raw_context.iregs[MD_CONTEXT_ARM_REG_LR] = return_address1;
+ raw_context.iregs[MD_CONTEXT_ARM_REG_IOS_FP] = frame1_fp.Value();
+ raw_context.iregs[MD_CONTEXT_ARM_REG_SP] = stack_section.start().Value();
+
+ StackwalkerARM walker(&system_info, &raw_context, MD_CONTEXT_ARM_REG_IOS_FP,
+ &stack_region, &modules, &supplier, &resolver);
+
+ ASSERT_TRUE(walker.Walk(&call_stack));
+ frames = call_stack.frames();
+ ASSERT_EQ(3U, frames->size());
+
+ StackFrameARM *frame0 = static_cast<StackFrameARM *>(frames->at(0));
+ EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
+ ASSERT_EQ(StackFrameARM::CONTEXT_VALID_ALL, frame0->context_validity);
+ EXPECT_EQ(0, memcmp(&raw_context, &frame0->context, sizeof(raw_context)));
+
+ StackFrameARM *frame1 = static_cast<StackFrameARM *>(frames->at(1));
+ EXPECT_EQ(StackFrame::FRAME_TRUST_FP, frame1->trust);
+ ASSERT_EQ((StackFrameARM::CONTEXT_VALID_PC |
+ StackFrameARM::CONTEXT_VALID_LR |
+ StackFrameARM::RegisterValidFlag(MD_CONTEXT_ARM_REG_IOS_FP) |
+ StackFrameARM::CONTEXT_VALID_SP),
+ frame1->context_validity);
+ EXPECT_EQ(return_address1, frame1->context.iregs[MD_CONTEXT_ARM_REG_PC]);
+ EXPECT_EQ(return_address2, frame1->context.iregs[MD_CONTEXT_ARM_REG_LR]);
+ EXPECT_EQ(frame1_sp.Value(), frame1->context.iregs[MD_CONTEXT_ARM_REG_SP]);
+ EXPECT_EQ(frame2_fp.Value(),
+ frame1->context.iregs[MD_CONTEXT_ARM_REG_IOS_FP]);
+ EXPECT_EQ("enchiridion", frame1->function_name);
+ EXPECT_EQ(0x40004000U, frame1->function_base);
+
+
+ StackFrameARM *frame2 = static_cast<StackFrameARM *>(frames->at(2));
+ EXPECT_EQ(StackFrame::FRAME_TRUST_CFI, frame2->trust);
+ ASSERT_EQ((StackFrameARM::CONTEXT_VALID_PC |
+ StackFrameARM::CONTEXT_VALID_LR |
+ StackFrameARM::RegisterValidFlag(MD_CONTEXT_ARM_REG_IOS_FP) |
+ StackFrameARM::CONTEXT_VALID_SP),
+ frame2->context_validity);
+ EXPECT_EQ(return_address2, frame2->context.iregs[MD_CONTEXT_ARM_REG_PC]);
+ EXPECT_EQ(0, frame2->context.iregs[MD_CONTEXT_ARM_REG_LR]);
+ EXPECT_EQ(frame2_sp.Value(), frame2->context.iregs[MD_CONTEXT_ARM_REG_SP]);
+ EXPECT_EQ(0, frame2->context.iregs[MD_CONTEXT_ARM_REG_IOS_FP]);
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-15 23:18:46 +0000