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-rw-r--r--src/google_breakpad/common/minidump_cpu_ppc64.h16
-rw-r--r--src/google_breakpad/common/minidump_format.h1
-rw-r--r--src/google_breakpad/processor/minidump.h2
-rw-r--r--src/google_breakpad/processor/stack_frame_cpu.h26
-rwxr-xr-xsrc/processor/minidump.cc138
-rw-r--r--src/processor/minidump_processor.cc5
-rw-r--r--src/processor/stackwalker.cc7
-rw-r--r--src/processor/stackwalker_ppc64.cc136
-rw-r--r--src/processor/stackwalker_ppc64.h76
9 files changed, 399 insertions, 8 deletions
diff --git a/src/google_breakpad/common/minidump_cpu_ppc64.h b/src/google_breakpad/common/minidump_cpu_ppc64.h
index da4f8723..3a883230 100644
--- a/src/google_breakpad/common/minidump_cpu_ppc64.h
+++ b/src/google_breakpad/common/minidump_cpu_ppc64.h
@@ -116,14 +116,14 @@ typedef struct {
* context stored in the structure. MD_CONTEXT_PPC is Breakpad-defined. Its
* value was chosen to avoid likely conflicts with MD_CONTEXT_* for other
* CPUs. */
-#define MD_CONTEXT_PPC 0x20000000
-#define MD_CONTEXT_PPC_BASE (MD_CONTEXT_PPC | 0x00000001)
-#define MD_CONTEXT_PPC_FLOATING_POINT (MD_CONTEXT_PPC | 0x00000008)
-#define MD_CONTEXT_PPC_VECTOR (MD_CONTEXT_PPC | 0x00000020)
+#define MD_CONTEXT_PPC64 0x01000000
+#define MD_CONTEXT_PPC64_BASE (MD_CONTEXT_PPC64 | 0x00000001)
+#define MD_CONTEXT_PPC64_FLOATING_POINT (MD_CONTEXT_PPC64 | 0x00000008)
+#define MD_CONTEXT_PPC64_VECTOR (MD_CONTEXT_PPC64 | 0x00000020)
-#define MD_CONTEXT_PPC_FULL MD_CONTEXT_PPC_BASE
-#define MD_CONTEXT_PPC_ALL (MD_CONTEXT_PPC_FULL | \
- MD_CONTEXT_PPC_FLOATING_POINT | \
- MD_CONTEXT_PPC_VECTOR)
+#define MD_CONTEXT_PPC64_FULL MD_CONTEXT_PPC64_BASE
+#define MD_CONTEXT_PPC64_ALL (MD_CONTEXT_PPC64_FULL | \
+ MD_CONTEXT_PPC64_FLOATING_POINT | \
+ MD_CONTEXT_PPC64_VECTOR)
#endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC64_H__ */
diff --git a/src/google_breakpad/common/minidump_format.h b/src/google_breakpad/common/minidump_format.h
index af8cab0a..6406e4a9 100644
--- a/src/google_breakpad/common/minidump_format.h
+++ b/src/google_breakpad/common/minidump_format.h
@@ -604,6 +604,7 @@ typedef enum {
MD_CPU_ARCHITECTURE_AMD64 = 9, /* PROCESSOR_ARCHITECTURE_AMD64 */
MD_CPU_ARCHITECTURE_X86_WIN64 = 10,
/* PROCESSOR_ARCHITECTURE_IA32_ON_WIN64 (WoW64) */
+ MD_CPU_ARCHITECTURE_PPC64 = 0x8000, /* Breakpad-defined value for PPC64 */
MD_CPU_ARCHITECTURE_SPARC = 0x8001, /* Breakpad-defined value for SPARC */
MD_CPU_ARCHITECTURE_UNKNOWN = 0xffff /* PROCESSOR_ARCHITECTURE_UNKNOWN */
} MDCPUArchitecture;
diff --git a/src/google_breakpad/processor/minidump.h b/src/google_breakpad/processor/minidump.h
index 18097714..87c00276 100644
--- a/src/google_breakpad/processor/minidump.h
+++ b/src/google_breakpad/processor/minidump.h
@@ -188,6 +188,7 @@ class MinidumpContext : public MinidumpStream {
const MDRawContextAMD64* GetContextAMD64() const;
const MDRawContextARM* GetContextARM() const;
const MDRawContextPPC* GetContextPPC() const;
+ const MDRawContextPPC64* GetContextPPC64() const;
const MDRawContextSPARC* GetContextSPARC() const;
const MDRawContextX86* GetContextX86() const;
@@ -202,6 +203,7 @@ class MinidumpContext : public MinidumpStream {
MDRawContextBase* base;
MDRawContextX86* x86;
MDRawContextPPC* ppc;
+ MDRawContextPPC64* ppc64;
MDRawContextAMD64* amd64;
// on Solaris SPARC, sparc is defined as a numeric constant,
// so variables can NOT be named as sparc
diff --git a/src/google_breakpad/processor/stack_frame_cpu.h b/src/google_breakpad/processor/stack_frame_cpu.h
index a9cf99b7..cda3a8de 100644
--- a/src/google_breakpad/processor/stack_frame_cpu.h
+++ b/src/google_breakpad/processor/stack_frame_cpu.h
@@ -123,6 +123,32 @@ struct StackFramePPC : public StackFrame {
int context_validity;
};
+struct StackFramePPC64 : public StackFrame {
+ // ContextValidity should eventually contain entries for the validity of
+ // other nonvolatile (callee-save) registers as in
+ // StackFrameX86::ContextValidity, but the ppc stackwalker doesn't currently
+ // locate registers other than the ones listed here.
+ enum ContextValidity {
+ CONTEXT_VALID_NONE = 0,
+ CONTEXT_VALID_SRR0 = 1 << 0,
+ CONTEXT_VALID_GPR1 = 1 << 1,
+ CONTEXT_VALID_ALL = -1
+ };
+
+ StackFramePPC64() : context(), context_validity(CONTEXT_VALID_NONE) {}
+
+ // Register state. This is only fully valid for the topmost frame in a
+ // stack. In other frames, the values of nonvolatile registers may be
+ // present, given sufficient debugging information. Refer to
+ // context_validity.
+ MDRawContextPPC64 context;
+
+ // context_validity is actually ContextValidity, but int is used because
+ // the OR operator doesn't work well with enumerated types. This indicates
+ // which fields in context are valid.
+ int context_validity;
+};
+
struct StackFrameAMD64 : public StackFrame {
// ContextValidity has one entry for each register that we might be able
// to recover.
diff --git a/src/processor/minidump.cc b/src/processor/minidump.cc
index 43d22e61..17232b8d 100755
--- a/src/processor/minidump.cc
+++ b/src/processor/minidump.cc
@@ -409,6 +409,78 @@ bool MinidumpContext::Read(uint32_t expected_size) {
context_.amd64 = context_amd64.release();
}
+ // |context_flags| of MDRawContextPPC64 is 64 bits, but other MDRawContext
+ // in the else case have 32 bits |context_flags|, so special case it here.
+ else if (expected_size == sizeof(MDRawContextPPC64)) {
+ uint64_t context_flags;
+ if (!minidump_->ReadBytes(&context_flags, sizeof(context_flags))) {
+ BPLOG(ERROR) << "MinidumpContext could not read context flags";
+ return false;
+ }
+ if (minidump_->swap())
+ Swap(&context_flags);
+
+ uint32_t cpu_type = context_flags & MD_CONTEXT_CPU_MASK;
+
+ scoped_ptr<MDRawContextPPC64> context_ppc64(new MDRawContextPPC64());
+
+ // Set the context_flags member, which has already been read, and
+ // read the rest of the structure beginning with the first member
+ // after context_flags.
+ context_ppc64->context_flags = context_flags;
+
+ size_t flags_size = sizeof(context_ppc64->context_flags);
+ uint8_t* context_after_flags =
+ reinterpret_cast<uint8_t*>(context_ppc64.get()) + flags_size;
+ if (!minidump_->ReadBytes(context_after_flags,
+ sizeof(MDRawContextPPC64) - flags_size)) {
+ BPLOG(ERROR) << "MinidumpContext could not read ppc64 context";
+ return false;
+ }
+
+ // Do this after reading the entire MDRawContext structure because
+ // GetSystemInfo may seek minidump to a new position.
+ if (!CheckAgainstSystemInfo(cpu_type)) {
+ BPLOG(ERROR) << "MinidumpContext ppc64 does not match system info";
+ return false;
+ }
+ if (minidump_->swap()) {
+ // context_ppc64->context_flags was already swapped.
+ Swap(&context_ppc64->srr0);
+ Swap(&context_ppc64->srr1);
+ for (unsigned int gpr_index = 0;
+ gpr_index < MD_CONTEXT_PPC64_GPR_COUNT;
+ ++gpr_index) {
+ Swap(&context_ppc64->gpr[gpr_index]);
+ }
+ Swap(&context_ppc64->cr);
+ Swap(&context_ppc64->xer);
+ Swap(&context_ppc64->lr);
+ Swap(&context_ppc64->ctr);
+ Swap(&context_ppc64->vrsave);
+ for (unsigned int fpr_index = 0;
+ fpr_index < MD_FLOATINGSAVEAREA_PPC_FPR_COUNT;
+ ++fpr_index) {
+ Swap(&context_ppc64->float_save.fpregs[fpr_index]);
+ }
+ // Don't swap context_ppc64->float_save.fpscr_pad because it is only
+ // used for padding.
+ Swap(&context_ppc64->float_save.fpscr);
+ for (unsigned int vr_index = 0;
+ vr_index < MD_VECTORSAVEAREA_PPC_VR_COUNT;
+ ++vr_index) {
+ Normalize128(&context_ppc64->vector_save.save_vr[vr_index], true);
+ Swap(&context_ppc64->vector_save.save_vr[vr_index]);
+ }
+ Swap(&context_ppc64->vector_save.save_vscr);
+ // Don't swap the padding fields in vector_save.
+ Swap(&context_ppc64->vector_save.save_vrvalid);
+ }
+
+ context_flags_ = context_ppc64->context_flags;
+ context_.ppc64 = context_ppc64.release();
+ }
+
else {
uint32_t context_flags;
if (!minidump_->ReadBytes(&context_flags, sizeof(context_flags))) {
@@ -753,6 +825,9 @@ bool MinidumpContext::GetInstructionPointer(uint64_t* ip) const {
case MD_CONTEXT_PPC:
*ip = context_.ppc->srr0;
break;
+ case MD_CONTEXT_PPC64:
+ *ip = context_.ppc64->srr0;
+ break;
case MD_CONTEXT_SPARC:
*ip = context_.ctx_sparc->pc;
break;
@@ -787,6 +862,15 @@ const MDRawContextPPC* MinidumpContext::GetContextPPC() const {
return context_.ppc;
}
+const MDRawContextPPC64* MinidumpContext::GetContextPPC64() const {
+ if (GetContextCPU() != MD_CONTEXT_PPC64) {
+ BPLOG(ERROR) << "MinidumpContext cannot get ppc64 context";
+ return NULL;
+ }
+
+ return context_.ppc64;
+}
+
const MDRawContextAMD64* MinidumpContext::GetContextAMD64() const {
if (GetContextCPU() != MD_CONTEXT_AMD64) {
BPLOG(ERROR) << "MinidumpContext cannot get amd64 context";
@@ -824,6 +908,10 @@ void MinidumpContext::FreeContext() {
delete context_.ppc;
break;
+ case MD_CONTEXT_PPC64:
+ delete context_.ppc64;
+ break;
+
case MD_CONTEXT_AMD64:
delete context_.amd64;
break;
@@ -886,6 +974,11 @@ bool MinidumpContext::CheckAgainstSystemInfo(uint32_t context_cpu_type) {
return_value = true;
break;
+ case MD_CONTEXT_PPC64:
+ if (system_info_cpu_type == MD_CPU_ARCHITECTURE_PPC64)
+ return_value = true;
+ break;
+
case MD_CONTEXT_AMD64:
if (system_info_cpu_type == MD_CPU_ARCHITECTURE_AMD64)
return_value = true;
@@ -1020,6 +1113,44 @@ void MinidumpContext::Print() {
break;
}
+ case MD_CONTEXT_PPC64: {
+ const MDRawContextPPC64* context_ppc64 = GetContextPPC64();
+ printf("MDRawContextPPC64\n");
+ printf(" context_flags = 0x%lx\n",
+ context_ppc64->context_flags);
+ printf(" srr0 = 0x%lx\n", context_ppc64->srr0);
+ printf(" srr1 = 0x%lx\n", context_ppc64->srr1);
+ for (unsigned int gpr_index = 0;
+ gpr_index < MD_CONTEXT_PPC64_GPR_COUNT;
+ ++gpr_index) {
+ printf(" gpr[%2d] = 0x%lx\n",
+ gpr_index, context_ppc64->gpr[gpr_index]);
+ }
+ printf(" cr = 0x%lx\n", context_ppc64->cr);
+ printf(" xer = 0x%lx\n", context_ppc64->xer);
+ printf(" lr = 0x%lx\n", context_ppc64->lr);
+ printf(" ctr = 0x%lx\n", context_ppc64->ctr);
+ printf(" vrsave = 0x%lx\n", context_ppc64->vrsave);
+ for (unsigned int fpr_index = 0;
+ fpr_index < MD_FLOATINGSAVEAREA_PPC_FPR_COUNT;
+ ++fpr_index) {
+ printf(" float_save.fpregs[%2d] = 0x%" PRIx64 "\n",
+ fpr_index, context_ppc64->float_save.fpregs[fpr_index]);
+ }
+ printf(" float_save.fpscr = 0x%x\n",
+ context_ppc64->float_save.fpscr);
+ // TODO(mmentovai): print the 128-bit quantities in
+ // context_ppc64->vector_save. This isn't done yet because printf
+ // doesn't support 128-bit quantities, and printing them using
+ // PRIx64 as two 64-bit quantities requires knowledge of the CPU's
+ // byte ordering.
+ printf(" vector_save.save_vrvalid = 0x%x\n",
+ context_ppc64->vector_save.save_vrvalid);
+ printf("\n");
+
+ break;
+ }
+
case MD_CONTEXT_AMD64: {
const MDRawContextAMD64* context_amd64 = GetContextAMD64();
printf("MDRawContextAMD64\n");
@@ -3198,6 +3329,10 @@ string MinidumpSystemInfo::GetCPU() {
cpu = "ppc";
break;
+ case MD_CPU_ARCHITECTURE_PPC64:
+ cpu = "ppc64";
+ break;
+
case MD_CPU_ARCHITECTURE_SPARC:
cpu = "sparc";
break;
@@ -3863,6 +3998,9 @@ bool Minidump::GetContextCPUFlagsFromSystemInfo(uint32_t *context_cpu_flags) {
case MD_CPU_ARCHITECTURE_PPC:
*context_cpu_flags = MD_CONTEXT_PPC;
break;
+ case MD_CPU_ARCHITECTURE_PPC64:
+ *context_cpu_flags = MD_CONTEXT_PPC64;
+ break;
case MD_CPU_ARCHITECTURE_SHX:
*context_cpu_flags = MD_CONTEXT_SHX;
break;
diff --git a/src/processor/minidump_processor.cc b/src/processor/minidump_processor.cc
index 08682780..afe15ca6 100644
--- a/src/processor/minidump_processor.cc
+++ b/src/processor/minidump_processor.cc
@@ -347,6 +347,11 @@ bool MinidumpProcessor::GetCPUInfo(Minidump *dump, SystemInfo *info) {
break;
}
+ case MD_CPU_ARCHITECTURE_PPC64: {
+ info->cpu = "ppc64";
+ break;
+ }
+
case MD_CPU_ARCHITECTURE_SPARC: {
info->cpu = "sparc";
break;
diff --git a/src/processor/stackwalker.cc b/src/processor/stackwalker.cc
index a92d71b8..076f2e5f 100644
--- a/src/processor/stackwalker.cc
+++ b/src/processor/stackwalker.cc
@@ -48,6 +48,7 @@
#include "processor/linked_ptr.h"
#include "processor/logging.h"
#include "processor/stackwalker_ppc.h"
+#include "processor/stackwalker_ppc64.h"
#include "processor/stackwalker_sparc.h"
#include "processor/stackwalker_x86.h"
#include "processor/stackwalker_amd64.h"
@@ -165,6 +166,12 @@ Stackwalker* Stackwalker::StackwalkerForCPU(
memory, modules, frame_symbolizer);
break;
+ case MD_CONTEXT_PPC64:
+ cpu_stackwalker = new StackwalkerPPC64(system_info,
+ context->GetContextPPC64(),
+ memory, modules, frame_symbolizer);
+ break;
+
case MD_CONTEXT_AMD64:
cpu_stackwalker = new StackwalkerAMD64(system_info,
context->GetContextAMD64(),
diff --git a/src/processor/stackwalker_ppc64.cc b/src/processor/stackwalker_ppc64.cc
new file mode 100644
index 00000000..fa49ce39
--- /dev/null
+++ b/src/processor/stackwalker_ppc64.cc
@@ -0,0 +1,136 @@
+// Copyright (c) 2013 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.
+
+// stackwalker_ppc64.cc: ppc64-specific stackwalker.
+//
+// See stackwalker_ppc64.h for documentation.
+
+
+#include "processor/stackwalker_ppc64.h"
+#include "google_breakpad/processor/call_stack.h"
+#include "google_breakpad/processor/memory_region.h"
+#include "google_breakpad/processor/stack_frame_cpu.h"
+#include "processor/logging.h"
+
+#include <stdio.h>
+
+namespace google_breakpad {
+
+
+StackwalkerPPC64::StackwalkerPPC64(const SystemInfo* system_info,
+ const MDRawContextPPC64* context,
+ MemoryRegion* memory,
+ const CodeModules* modules,
+ StackFrameSymbolizer* resolver_helper)
+ : Stackwalker(system_info, memory, modules, resolver_helper),
+ context_(context) {
+}
+
+
+StackFrame* StackwalkerPPC64::GetContextFrame() {
+ if (!context_) {
+ BPLOG(ERROR) << "Can't get context frame without context";
+ return NULL;
+ }
+
+ StackFramePPC64* frame = new StackFramePPC64();
+
+ // The instruction pointer is stored directly in a register, so pull it
+ // straight out of the CPU context structure.
+ frame->context = *context_;
+ frame->context_validity = StackFramePPC64::CONTEXT_VALID_ALL;
+ frame->trust = StackFrame::FRAME_TRUST_CONTEXT;
+ frame->instruction = frame->context.srr0;
+
+ return frame;
+}
+
+
+StackFrame* StackwalkerPPC64::GetCallerFrame(const CallStack* stack) {
+ if (!memory_ || !stack) {
+ BPLOG(ERROR) << "Can't get caller frame without memory or stack";
+ return NULL;
+ }
+
+ // The instruction pointers for previous frames are saved on the stack.
+ // The typical ppc64 calling convention is for the called procedure to store
+ // its return address in the calling procedure's stack frame at 8(%r1),
+ // and to allocate its own stack frame by decrementing %r1 (the stack
+ // pointer) and saving the old value of %r1 at 0(%r1). Because the ppc64 has
+ // no hardware stack, there is no distinction between the stack pointer and
+ // frame pointer, and what is typically thought of as the frame pointer on
+ // an x86 is usually referred to as the stack pointer on a ppc64.
+
+ StackFramePPC64* last_frame = static_cast<StackFramePPC64*>(
+ stack->frames()->back());
+
+ // A caller frame must reside higher in memory than its callee frames.
+ // Anything else is an error, or an indication that we've reached the
+ // end of the stack.
+ uint64_t stack_pointer;
+ if (!memory_->GetMemoryAtAddress(last_frame->context.gpr[1],
+ &stack_pointer) ||
+ stack_pointer <= last_frame->context.gpr[1]) {
+ return NULL;
+ }
+
+ // Mac OS X/Darwin gives 1 as the return address from the bottom-most
+ // frame in a stack (a thread's entry point). I haven't found any
+ // documentation on this, but 0 or 1 would be bogus return addresses,
+ // so check for them here and return false (end of stack) when they're
+ // hit to avoid having a phantom frame.
+ uint64_t instruction;
+ if (!memory_->GetMemoryAtAddress(stack_pointer + 16, &instruction) ||
+ instruction <= 1) {
+ return NULL;
+ }
+
+ StackFramePPC64* frame = new StackFramePPC64();
+
+ frame->context = last_frame->context;
+ frame->context.srr0 = instruction;
+ frame->context.gpr[1] = stack_pointer;
+ frame->context_validity = StackFramePPC64::CONTEXT_VALID_SRR0 |
+ StackFramePPC64::CONTEXT_VALID_GPR1;
+ frame->trust = StackFrame::FRAME_TRUST_FP;
+
+ // frame->context.srr0 is the return address, which is one instruction
+ // past the branch that caused us to arrive at the callee. Set
+ // frame_ppc64->instruction to eight less than that. Since all ppc64
+ // instructions are 8 bytes wide, this is the address of the branch
+ // instruction. This allows source line information to match up with the
+ // line that contains a function call. Callers that require the exact
+ // return address value may access the context.srr0 field of StackFramePPC64.
+ frame->instruction = frame->context.srr0 - 8;
+
+ return frame;
+}
+
+
+} // namespace google_breakpad
diff --git a/src/processor/stackwalker_ppc64.h b/src/processor/stackwalker_ppc64.h
new file mode 100644
index 00000000..6579db70
--- /dev/null
+++ b/src/processor/stackwalker_ppc64.h
@@ -0,0 +1,76 @@
+// Copyright (c) 2013 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.
+
+// stackwalker_ppc64.h: ppc-specific stackwalker.
+//
+// Provides stack frames given ppc64 register context and a memory region
+// corresponding to a ppc64 stack.
+
+
+#ifndef PROCESSOR_STACKWALKER_PPC64_H__
+#define PROCESSOR_STACKWALKER_PPC64_H__
+
+
+#include "google_breakpad/common/breakpad_types.h"
+#include "google_breakpad/common/minidump_format.h"
+#include "google_breakpad/processor/stackwalker.h"
+
+namespace google_breakpad {
+
+class CodeModules;
+
+class StackwalkerPPC64 : public Stackwalker {
+ public:
+ // context is a ppc64 context object that gives access to ppc64-specific
+ // register state corresponding to the innermost called frame to be
+ // included in the stack. The other arguments are passed directly through
+ // to the base Stackwalker constructor.
+ StackwalkerPPC64(const SystemInfo* system_info,
+ const MDRawContextPPC64* context,
+ MemoryRegion* memory,
+ const CodeModules* modules,
+ StackFrameSymbolizer* frame_symbolizer);
+
+ private:
+ // Implementation of Stackwalker, using ppc64 context (stack pointer in %r1,
+ // saved program counter in %srr0) and stack conventions (saved stack
+ // pointer at 0(%r1), return address at 8(0(%r1)).
+ virtual StackFrame* GetContextFrame();
+ virtual StackFrame* GetCallerFrame(const CallStack* stack);
+
+ // Stores the CPU context corresponding to the innermost stack frame to
+ // be returned by GetContextFrame.
+ const MDRawContextPPC64* context_;
+};
+
+
+} // namespace google_breakpad
+
+
+#endif // PROCESSOR_STACKWALKER_PPC64_H__
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