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      1 /* libunwind - a platform-independent unwind library
      2    Copyright (C) 2002, 2005 Hewlett-Packard Co
      3 	Contributed by David Mosberger-Tang <davidm (at) hpl.hp.com>
      4 
      5    Modified for x86_64 by Max Asbock <masbock (at) us.ibm.com>
      6 
      7 This file is part of libunwind.
      8 
      9 Permission is hereby granted, free of charge, to any person obtaining
     10 a copy of this software and associated documentation files (the
     11 "Software"), to deal in the Software without restriction, including
     12 without limitation the rights to use, copy, modify, merge, publish,
     13 distribute, sublicense, and/or sell copies of the Software, and to
     14 permit persons to whom the Software is furnished to do so, subject to
     15 the following conditions:
     16 
     17 The above copyright notice and this permission notice shall be
     18 included in all copies or substantial portions of the Software.
     19 
     20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     23 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
     27 
     28 #ifndef unwind_i_h
     29 #define unwind_i_h
     30 
     31 #include <stdint.h>
     32 
     33 #include <libunwind-x86_64.h>
     34 
     35 #include "libunwind_i.h"
     36 #include <sys/ucontext.h>
     37 
     38 /* DWARF column numbers for x86_64: */
     39 #define RAX	0
     40 #define RDX	1
     41 #define RCX	2
     42 #define RBX	3
     43 #define RSI	4
     44 #define RDI	5
     45 #define RBP	6
     46 #define RSP	7
     47 #define R8	8
     48 #define R9	9
     49 #define R10	10
     50 #define R11	11
     51 #define R12	12
     52 #define R13	13
     53 #define R14	14
     54 #define R15	15
     55 #define RIP	16
     56 
     57 #define x86_64_lock			UNW_OBJ(lock)
     58 #define x86_64_local_resume		UNW_OBJ(local_resume)
     59 #define x86_64_local_addr_space_init	UNW_OBJ(local_addr_space_init)
     60 #define setcontext			UNW_ARCH_OBJ (setcontext)
     61 #if 0
     62 #define x86_64_scratch_loc		UNW_OBJ(scratch_loc)
     63 #endif
     64 #define x86_64_r_uc_addr		UNW_OBJ(r_uc_addr)
     65 #define x86_64_sigreturn		UNW_OBJ(sigreturn)
     66 
     67 /* By-pass calls to access_mem() when known to be safe. */
     68 #ifdef UNW_LOCAL_ONLY
     69 # undef ACCESS_MEM_FAST
     70 # define ACCESS_MEM_FAST(ret,validate,cur,addr,to)                     \
     71   do {                                                                 \
     72     if (unlikely(validate))                                            \
     73       (ret) = dwarf_get ((cur), DWARF_MEM_LOC ((cur), (addr)), &(to)); \
     74     else                                                               \
     75       (ret) = 0, (to) = *(unw_word_t *)(addr);                         \
     76   } while (0)
     77 #endif
     78 
     79 extern void x86_64_local_addr_space_init (void);
     80 extern int x86_64_local_resume (unw_addr_space_t as, unw_cursor_t *cursor,
     81 			     void *arg);
     82 extern int setcontext (const ucontext_t *ucp);
     83 
     84 #if 0
     85 extern dwarf_loc_t x86_64_scratch_loc (struct cursor *c, unw_regnum_t reg);
     86 #endif
     87 
     88 extern void *x86_64_r_uc_addr (ucontext_t *uc, int reg);
     89 extern NORETURN void x86_64_sigreturn (unw_cursor_t *cursor);
     90 
     91 #endif /* unwind_i_h */
     92