/* libunwind - a platform-independent unwind library Copyright (C) 2001-2003 Hewlett-Packard Co Contributed by David Mosberger-Tang 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 /* Platform-independent libunwind-internal declarations. */ #include /* HP-UX needs this before include of pthread.h */ #include #include #include #include #ifdef __GNUC__ # if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ > 2) # define HIDDEN __attribute__((visibility ("hidden"))) # else # define HIDDEN # 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 HIDDEN # define likely(x) (x) # define unlikely(x) (x) #endif #ifdef DEBUG # define UNW_DEBUG 1 #endif #if UNW_DEBUG # include # define debug(level,format...) \ do { if (tdep_debug_level > level) fprintf (stderr, format); } while (0) # define dprintf(format...) \ fprintf (stderr, format) # ifdef __GNUC__ # define inline __attribute__ ((unused)) # endif #else # define debug(level,format...) # define dprintf(format...) #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_lock #pragma weak pthread_mutex_unlock #define mutex_init(l) (pthread_mutex_init ? pthread_mutex_init ((l), 0) : 0) #define mutex_lock(l) (pthread_mutex_lock ? pthread_mutex_lock (l) : 0) #define mutex_unlock(l) (pthread_mutex_unlock ? pthread_mutex_unlock (l) : 0) #ifdef HAVE_IA64INTRIN_H # define HAVE_CMPXCHG # include /* * ecc v7.0 is broken: it's missing __sync_val_compare_and_swap() * even though the ia64 ABI requires it. Work around it: */ # ifndef __sync_val_compare_and_swap # define __sync_val_compare_and_swap(x,y,z) \ _InterlockedCompareExchange64_rel(x,y,z) # endif # define cmpxchg_ptr(_ptr,_o,_n) \ ((void *) __sync_val_compare_and_swap((volatile long *) (_ptr), \ (long) (_o), (long) (_n))) #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; extern int UNWI_OBJ(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_ARCH_OBJ(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_OBJ(put_dynamic_unwind_info) (unw_addr_space_t as, unw_proc_info_t *pi, void *arg); extern int UNWI_ARCH_OBJ(dyn_remote_find_proc_info) (unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi, unw_word_t *generation, int need_unwind_info, void *arg); extern void UNWI_ARCH_OBJ(dyn_remote_put_unwind_info) (unw_addr_space_t as, unw_proc_info_t *pi, void *arg); extern int UNWI_OBJ(get_proc_name) (unw_addr_space_t as, unw_word_t ip, char *buf, size_t buf_len, unw_word_t *offp, void *arg); #define unwi_find_dynamic_proc_info(as,ip,pi,n,arg) \ UNWI_OBJ(find_dynamic_proc_info)(as, ip, pi, n, arg) #define unwi_extract_dynamic_proc_info(as,ip,pi,di,n,arg) \ UNWI_ARCH_OBJ(extract_dynamic_proc_info)(as, ip, pi, di, n, arg) #define unwi_put_dynamic_unwind_info(as,pi,arg) \ UNWI_OBJ(put_dynamic_unwind_info)(as, pi, arg) /* These handle the remote (cross-address-space) case of accessing dynamic unwind info. */ #define unwi_dyn_remote_find_proc_info(as,i,p,g,n,arg) \ UNWI_ARCH_OBJ(dyn_remote_find_proc_info)(as, i, p, g, n, arg) #define unwi_dyn_remote_put_unwind_info(as,p,arg) \ UNWI_ARCH_OBJ(dyn_remote_put_unwind_info)(as, p, arg) #define unwi_get_proc_name(as,ip,b,s,o,arg) \ UNWI_OBJ(get_proc_name)(as, ip, b, s, o, arg) extern unw_dyn_info_list_t _U_dyn_info_list; extern pthread_mutex_t _U_dyn_info_list_lock; #define WSIZE (sizeof (unw_word_t)) static inline int fetch8 (unw_addr_space_t as, unw_accessors_t *a, unw_word_t *addr, int8_t *valp, void *arg) { unw_word_t val, aligned_addr = *addr & -WSIZE, off = *addr - aligned_addr; int ret; *addr += 1; ret = (*a->access_mem) (as, aligned_addr, &val, 0, arg); #if __BYTE_ORDER == __LITTLE_ENDIAN val >>= 8*off; #else val >>= 8*(WSIZE - 1 - off); #endif *valp = val & 0xff; return ret; } static inline int fetch16 (unw_addr_space_t as, unw_accessors_t *a, unw_word_t *addr, int16_t *valp, void *arg) { unw_word_t val, aligned_addr = *addr & -WSIZE, off = *addr - aligned_addr; int ret; assert ((off & 0x1) == 0); *addr += 2; ret = (*a->access_mem) (as, aligned_addr, &val, 0, arg); #if __BYTE_ORDER == __LITTLE_ENDIAN val >>= 8*off; #else val >>= 8*(WSIZE - 2 - off); #endif *valp = val & 0xffff; return ret; } static inline int fetch32 (unw_addr_space_t as, unw_accessors_t *a, unw_word_t *addr, int32_t *valp, void *arg) { unw_word_t val, aligned_addr = *addr & -WSIZE, off = *addr - aligned_addr; int ret; assert ((off & 0x3) == 0); *addr += 4; ret = (*a->access_mem) (as, aligned_addr, &val, 0, arg); #if __BYTE_ORDER == __LITTLE_ENDIAN val >>= 8*off; #else val >>= 8*(WSIZE - 4 - off); #endif *valp = val & 0xffffffff; return ret; } static inline int fetchw (unw_addr_space_t as, unw_accessors_t *a, unw_word_t *addr, unw_word_t *valp, void *arg) { int ret; ret = (*a->access_mem) (as, *addr, valp, 0, arg); *addr += WSIZE; return ret; } #define mi_init UNWI_ARCH_OBJ(mi_init) extern void mi_init (void); /* machine-independent initializations */ /* 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 */