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Handle frame pointer omission, (#21), part 4 (final part!): FPO stackwalker.

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r=bryner
 - This change allows Airbag to properly walk win32 stacks produced by code
   built with MSVC's frame pointer omission optimization (/Oy).  This
   optimization is enabled at /O1 and /O2.
 - There too many interface and file format changes to list here.

http://groups.google.com/group/airbag-dev/browse_thread/thread/85ce85bfa8457ece


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@42 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
mmentovai 2006-10-20 01:46:38 +00:00
parent 5afd60b067
commit 246f406828
33 changed files with 2643 additions and 1744 deletions
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45
src/google/stack_frame.h
View file

@ -31,58 +31,51 @@
#define GOOGLE_STACK_FRAME_H__
#include <string>
#include <vector>
#include "google/airbag_types.h"
namespace google_airbag {
using std::string;
using std::vector;
struct StackFrame {
// Initialize sensible defaults, or this will be instantiated with
// primitive members in an undetermined state.
StackFrame()
: instruction()
, frame_pointer()
, module_base()
, module_name()
, function_base()
, function_name()
, source_file_name()
, source_line() {}
: instruction(),
module_base(),
module_name(),
function_base(),
function_name(),
source_file_name(),
source_line() {}
virtual ~StackFrame() {}
// The program counter location relative to the module base
// The program counter location as an absolute virtual address. For the
// innermost called frame in a stack, this will be an exact program counter
// or instruction pointer value. For all other frames, this will be within
// the instruction that caused execution to branch to a called function,
// but may not necessarily point to the exact beginning of that instruction.
u_int64_t instruction;
// The frame pointer to this stack frame
u_int64_t frame_pointer;
// The base address of the module
// The base address of the module.
u_int64_t module_base;
// The module in which the pc resides
// The module in which the instruction resides.
string module_name;
// The start address of the function, may be omitted if debug symbols
// are not available.
u_int64_t function_base;
// The function name, may be omitted if debug symbols are not available
// The function name, may be omitted if debug symbols are not available.
string function_name;
// The source file name, may be omitted if debug symbols are not available
// The source file name, may be omitted if debug symbols are not available.
string source_file_name;
// The (1-based) source line number,
// may be omitted if debug symbols are not available
// The (1-based) source line number, may be omitted if debug symbols are
// not available.
int source_line;
// TODO(bryner): saved registers
};
typedef vector<StackFrame> StackFrames;
} // namespace google_airbag
#endif // GOOGLE_STACK_FRAME_H__