diff options
Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/processor/stackwalker_sparc.cc')
| -rw-r--r-- | toolkit/crashreporter/google-breakpad/src/processor/stackwalker_sparc.cc | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/processor/stackwalker_sparc.cc b/toolkit/crashreporter/google-breakpad/src/processor/stackwalker_sparc.cc deleted file mode 100644 index ff2ea75a8..000000000 --- a/toolkit/crashreporter/google-breakpad/src/processor/stackwalker_sparc.cc +++ /dev/null @@ -1,139 +0,0 @@ -// 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. - -// stackwalker_sparc.cc: sparc-specific stackwalker. -// -// See stackwalker_sparc.h for documentation. -// -// Author: Michael Shang - - -#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 "processor/stackwalker_sparc.h" - -namespace google_breakpad { - - -StackwalkerSPARC::StackwalkerSPARC(const SystemInfo* system_info, - const MDRawContextSPARC* context, - MemoryRegion* memory, - const CodeModules* modules, - StackFrameSymbolizer* resolver_helper) - : Stackwalker(system_info, memory, modules, resolver_helper), - context_(context) { -} - - -StackFrame* StackwalkerSPARC::GetContextFrame() { - if (!context_) { - BPLOG(ERROR) << "Can't get context frame without context"; - return NULL; - } - - StackFrameSPARC* frame = new StackFrameSPARC(); - - // 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 = StackFrameSPARC::CONTEXT_VALID_ALL; - frame->trust = StackFrame::FRAME_TRUST_CONTEXT; - frame->instruction = frame->context.pc; - - return frame; -} - - -StackFrame* StackwalkerSPARC::GetCallerFrame(const CallStack* stack, - bool stack_scan_allowed) { - if (!memory_ || !stack) { - BPLOG(ERROR) << "Can't get caller frame without memory or stack"; - return NULL; - } - - StackFrameSPARC* last_frame = static_cast<StackFrameSPARC*>( - stack->frames()->back()); - - // new: caller - // old: callee - // %fp, %i6 and g_r[30] is the same, see minidump_format.h - // %sp, %o6 and g_r[14] is the same, see minidump_format.h - // %sp_new = %fp_old - // %fp_new = *(%fp_old + 32 + 32 - 8), where the callee's %i6 - // %pc_new = *(%fp_old + 32 + 32 - 4) + 8 - // which is callee's %i7 plus 8 - - // 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 = last_frame->context.g_r[30]; - if (stack_pointer <= last_frame->context.g_r[14]) { - return NULL; - } - - uint32_t instruction; - if (!memory_->GetMemoryAtAddress(stack_pointer + 60, - &instruction) || instruction <= 1) { - return NULL; - } - - uint32_t stack_base; - if (!memory_->GetMemoryAtAddress(stack_pointer + 56, - &stack_base) || stack_base <= 1) { - return NULL; - } - - StackFrameSPARC* frame = new StackFrameSPARC(); - - frame->context = last_frame->context; - frame->context.g_r[14] = stack_pointer; - frame->context.g_r[30] = stack_base; - - // frame->context.pc is the return address, which is 2 instruction - // past the branch that caused us to arrive at the callee, which are - // a CALL instruction then a NOP instruction. - // frame_ppc->instruction to 8 less than that. Since all sparc - // instructions are 4 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 %i7/g_r[31] field of StackFrameSPARC. - frame->context.pc = instruction + 8; - frame->instruction = instruction; - frame->context_validity = StackFrameSPARC::CONTEXT_VALID_PC | - StackFrameSPARC::CONTEXT_VALID_SP | - StackFrameSPARC::CONTEXT_VALID_FP; - frame->trust = StackFrame::FRAME_TRUST_FP; - - return frame; -} - - -} // namespace google_breakpad |