mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-12-23 12:03:41 +01:00
249 lines
7 KiB
C
249 lines
7 KiB
C
/* libunwind - a platform-independent unwind library
|
|
Copyright (C) 2001-2004 Hewlett-Packard Co
|
|
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
|
|
|
|
This file is part of libunwind.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
|
a copy of this software and associated documentation files (the
|
|
"Software"), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
|
|
#ifndef internal_h
|
|
#define internal_h
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#ifdef HAVE___THREAD
|
|
/* For now, turn off per-thread caching. It uses up too much TLS
|
|
memory per thread even when the thread never uses libunwind at
|
|
all. */
|
|
# undef HAVE___THREAD
|
|
#endif
|
|
|
|
/* Platform-independent libunwind-internal declarations. */
|
|
|
|
#include <sys/types.h> /* HP-UX needs this before include of pthread.h */
|
|
|
|
#include <assert.h>
|
|
#include <libunwind.h>
|
|
#include <pthread.h>
|
|
#include <signal.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#ifdef HAVE_ENDIAN_H
|
|
# include <endian.h>
|
|
#else
|
|
# define __LITTLE_ENDIAN 1234
|
|
# define __BIG_ENDIAN 4321
|
|
# if defined(__hpux)
|
|
# define __BYTE_ORDER __BIG_ENDIAN
|
|
# else
|
|
# error Host has unknown byte-order.
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef __GNUC__
|
|
# define UNUSED __attribute__((unused))
|
|
# define NORETURN __attribute__((noreturn))
|
|
# define ALIAS(name) __attribute__((alias (#name)))
|
|
# if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
|
|
# define ALWAYS_INLINE __attribute__((always_inline))
|
|
# define HIDDEN __attribute__((visibility ("hidden")))
|
|
# define PROTECTED __attribute__((visibility ("protected")))
|
|
# else
|
|
# define ALWAYS_INLINE
|
|
# define HIDDEN
|
|
# define PROTECTED
|
|
# endif
|
|
# if (__GNUC__ >= 3)
|
|
# define likely(x) __builtin_expect ((x), 1)
|
|
# define unlikely(x) __builtin_expect ((x), 0)
|
|
# else
|
|
# define likely(x) (x)
|
|
# define unlikely(x) (x)
|
|
# endif
|
|
#else
|
|
# define ALWAYS_INLINE
|
|
# define UNUSED
|
|
# define NORETURN
|
|
# define ALIAS(name)
|
|
# define HIDDEN
|
|
# define PROTECTED
|
|
# define likely(x) (x)
|
|
# define unlikely(x) (x)
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
# define UNW_DEBUG 1
|
|
#else
|
|
# define UNW_DEBUG 0
|
|
#endif
|
|
|
|
#define NELEMS(a) (sizeof (a) / sizeof ((a)[0]))
|
|
|
|
/* Make it easy to write thread-safe code which may or may not be
|
|
linked against libpthread. The macros below can be used
|
|
unconditionally and if -lpthread is around, they'll call the
|
|
corresponding routines otherwise, they do nothing. */
|
|
|
|
#pragma weak pthread_mutex_init
|
|
#pragma weak pthread_mutex_lock
|
|
#pragma weak pthread_mutex_unlock
|
|
|
|
#define mutex_init(l) \
|
|
(pthread_mutex_init != 0 ? pthread_mutex_init ((l), 0) : 0)
|
|
#define mutex_lock(l) \
|
|
(pthread_mutex_lock != 0 ? pthread_mutex_lock (l) : 0)
|
|
#define mutex_unlock(l) \
|
|
(pthread_mutex_unlock != 0 ? pthread_mutex_unlock (l) : 0)
|
|
|
|
#ifdef HAVE_ATOMIC_OPS_H
|
|
# include <atomic_ops.h>
|
|
static inline int
|
|
cmpxchg_ptr (void *addr, void *old, void *new)
|
|
{
|
|
union
|
|
{
|
|
void *vp;
|
|
AO_t *aop;
|
|
}
|
|
u;
|
|
|
|
u.vp = addr;
|
|
return AO_compare_and_swap(u.aop, (AO_t) old, (AO_t) new);
|
|
}
|
|
# define fetch_and_add1(_ptr) AO_fetch_and_add1(_ptr)
|
|
/* GCC 3.2.0 on HP-UX crashes on cmpxchg_ptr() */
|
|
# if !(defined(__hpux) && __GNUC__ == 3 && __GNUC_MINOR__ == 2)
|
|
# define HAVE_CMPXCHG
|
|
# endif
|
|
# define HAVE_FETCH_AND_ADD1
|
|
#else
|
|
# ifdef HAVE_IA64INTRIN_H
|
|
# include <ia64intrin.h>
|
|
static inline int
|
|
cmpxchg_ptr (void *addr, void *old, void *new)
|
|
{
|
|
union
|
|
{
|
|
void *vp;
|
|
long *vlp;
|
|
}
|
|
u;
|
|
|
|
u.vp = addr;
|
|
return __sync_bool_compare_and_swap(u.vlp, (long) old, (long) new);
|
|
}
|
|
# define fetch_and_add1(_ptr) __sync_fetch_and_add(_ptr, 1)
|
|
# define HAVE_CMPXCHG
|
|
# define HAVE_FETCH_AND_ADD1
|
|
# endif
|
|
#endif
|
|
|
|
#define UNWI_OBJ(fn) UNW_PASTE(UNW_PREFIX,UNW_PASTE(I,fn))
|
|
#define UNWI_ARCH_OBJ(fn) UNW_PASTE(UNW_PASTE(UNW_PASTE(_UI,UNW_TARGET),_), fn)
|
|
|
|
#define unwi_full_sigmask UNWI_ARCH_OBJ(full_sigmask)
|
|
|
|
extern sigset_t unwi_full_sigmask;
|
|
|
|
#define unwi_find_dynamic_proc_info UNWI_OBJ(find_dynamic_proc_info)
|
|
#define unwi_extract_dynamic_proc_info UNWI_OBJ(extract_dynamic_proc_info)
|
|
#define unwi_put_dynamic_unwind_info UNWI_OBJ(put_dynamic_unwind_info)
|
|
#define unwi_dyn_remote_find_proc_info UNWI_OBJ(dyn_remote_find_proc_info)
|
|
#define unwi_dyn_remote_put_unwind_info UNWI_OBJ(dyn_remote_put_unwind_info)
|
|
#define unwi_dyn_validate_cache UNWI_OBJ(dyn_validate_cache)
|
|
|
|
extern int unwi_find_dynamic_proc_info (unw_addr_space_t as,
|
|
unw_word_t ip,
|
|
unw_proc_info_t *pi,
|
|
int need_unwind_info, void *arg);
|
|
extern int unwi_extract_dynamic_proc_info (unw_addr_space_t as,
|
|
unw_word_t ip,
|
|
unw_proc_info_t *pi,
|
|
unw_dyn_info_t *di,
|
|
int need_unwind_info,
|
|
void *arg);
|
|
extern void unwi_put_dynamic_unwind_info (unw_addr_space_t as,
|
|
unw_proc_info_t *pi, void *arg);
|
|
|
|
/* These handle the remote (cross-address-space) case of accessing
|
|
dynamic unwind info. */
|
|
|
|
extern int unwi_dyn_remote_find_proc_info (unw_addr_space_t as,
|
|
unw_word_t ip,
|
|
unw_proc_info_t *pi,
|
|
int need_unwind_info,
|
|
void *arg);
|
|
extern void unwi_dyn_remote_put_unwind_info (unw_addr_space_t as,
|
|
unw_proc_info_t *pi,
|
|
void *arg);
|
|
extern int unwi_dyn_validate_cache (unw_addr_space_t as, void *arg);
|
|
|
|
extern unw_dyn_info_list_t _U_dyn_info_list;
|
|
extern pthread_mutex_t _U_dyn_info_list_lock;
|
|
|
|
#if UNW_DEBUG
|
|
#define unwi_debug_level UNWI_ARCH_OBJ(debug_level)
|
|
extern long unwi_debug_level;
|
|
|
|
# include <stdio.h>
|
|
# define Debug(level,format...) \
|
|
do { \
|
|
if (unwi_debug_level > level) \
|
|
{ \
|
|
int _n = level; \
|
|
if (_n > 16) \
|
|
_n = 16; \
|
|
fprintf (stderr, "%*c>%s: ", _n, ' ', __FUNCTION__); \
|
|
fprintf (stderr, format); \
|
|
} \
|
|
} while (0)
|
|
# define dprintf(format...) fprintf (stderr, format)
|
|
# ifdef __GNUC__
|
|
# undef inline
|
|
# define inline UNUSED
|
|
# endif
|
|
#else
|
|
# define Debug(level,format...)
|
|
# define dprintf(format...)
|
|
#endif
|
|
|
|
static inline ALWAYS_INLINE void
|
|
print_error (const char *string)
|
|
{
|
|
write (2, string, strlen (string));
|
|
}
|
|
|
|
#define mi_init UNWI_ARCH_OBJ(mi_init)
|
|
|
|
extern void mi_init (void); /* machine-independent initializations */
|
|
extern unw_word_t _U_dyn_info_list_addr (void);
|
|
|
|
/* This is needed/used by ELF targets only. */
|
|
|
|
struct elf_image
|
|
{
|
|
void *image; /* pointer to mmap'd image */
|
|
size_t size; /* (file-) size of the image */
|
|
};
|
|
|
|
#endif /* internal_h */
|