494ca1f1a3
Added libcorkscrew headers for stacktrace on android. Added execinfo.h detection for stacktrace on linux.
135 lines
3.5 KiB
C
135 lines
3.5 KiB
C
/*
|
|
* Copyright (C) 2011 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/* Useful ptrace() utility functions. */
|
|
|
|
#ifndef _CORKSCREW_PTRACE_H
|
|
#define _CORKSCREW_PTRACE_H
|
|
|
|
#include <corkscrew/map_info.h>
|
|
#include <corkscrew/symbol_table.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Stores information about a process that is used for several different
|
|
* ptrace() based operations. */
|
|
typedef struct {
|
|
map_info_t* map_info_list;
|
|
} ptrace_context_t;
|
|
|
|
/* Describes how to access memory from a process. */
|
|
typedef struct {
|
|
pid_t tid;
|
|
const map_info_t* map_info_list;
|
|
} memory_t;
|
|
|
|
#if __i386__
|
|
/* ptrace() register context. */
|
|
typedef struct pt_regs_x86 {
|
|
uint32_t ebx;
|
|
uint32_t ecx;
|
|
uint32_t edx;
|
|
uint32_t esi;
|
|
uint32_t edi;
|
|
uint32_t ebp;
|
|
uint32_t eax;
|
|
uint32_t xds;
|
|
uint32_t xes;
|
|
uint32_t xfs;
|
|
uint32_t xgs;
|
|
uint32_t orig_eax;
|
|
uint32_t eip;
|
|
uint32_t xcs;
|
|
uint32_t eflags;
|
|
uint32_t esp;
|
|
uint32_t xss;
|
|
} pt_regs_x86_t;
|
|
#endif
|
|
|
|
#if __mips__
|
|
/* ptrace() GET_REGS context. */
|
|
typedef struct pt_regs_mips {
|
|
uint64_t regs[32];
|
|
uint64_t lo;
|
|
uint64_t hi;
|
|
uint64_t cp0_epc;
|
|
uint64_t cp0_badvaddr;
|
|
uint64_t cp0_status;
|
|
uint64_t cp0_cause;
|
|
} pt_regs_mips_t;
|
|
#endif
|
|
|
|
/*
|
|
* Initializes a memory structure for accessing memory from this process.
|
|
*/
|
|
void init_memory(memory_t* memory, const map_info_t* map_info_list);
|
|
|
|
/*
|
|
* Initializes a memory structure for accessing memory from another process
|
|
* using ptrace().
|
|
*/
|
|
void init_memory_ptrace(memory_t* memory, pid_t tid);
|
|
|
|
/*
|
|
* Reads a word of memory safely.
|
|
* If the memory is local, ensures that the address is readable before dereferencing it.
|
|
* Returns false and a value of 0xffffffff if the word could not be read.
|
|
*/
|
|
bool try_get_word(const memory_t* memory, uintptr_t ptr, uint32_t* out_value);
|
|
|
|
/*
|
|
* Reads a word of memory safely using ptrace().
|
|
* Returns false and a value of 0xffffffff if the word could not be read.
|
|
*/
|
|
bool try_get_word_ptrace(pid_t tid, uintptr_t ptr, uint32_t* out_value);
|
|
|
|
/*
|
|
* Loads information needed for examining a remote process using ptrace().
|
|
* The caller must already have successfully attached to the process
|
|
* using ptrace().
|
|
*
|
|
* The context can be used for any threads belonging to that process
|
|
* assuming ptrace() is attached to them before performing the actual
|
|
* unwinding. The context can continue to be used to decode backtraces
|
|
* even after ptrace() has been detached from the process.
|
|
*/
|
|
ptrace_context_t* load_ptrace_context(pid_t pid);
|
|
|
|
/*
|
|
* Frees a ptrace context.
|
|
*/
|
|
void free_ptrace_context(ptrace_context_t* context);
|
|
|
|
/*
|
|
* Finds a symbol using ptrace.
|
|
* Returns the containing map and information about the symbol, or
|
|
* NULL if one or the other is not available.
|
|
*/
|
|
void find_symbol_ptrace(const ptrace_context_t* context,
|
|
uintptr_t addr, const map_info_t** out_map_info, const symbol_t** out_symbol);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif // _CORKSCREW_PTRACE_H
|