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      1 /* libunwind - a platform-independent unwind library
      2    Copyright (C) 2002-2004 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 LIBUNWIND_H
     29 #define LIBUNWIND_H
     30 
     31 #if defined(__cplusplus) || defined(c_plusplus)
     32 extern "C" {
     33 #endif
     34 
     35 #include <sys/types.h>
     36 #include <inttypes.h>
     37 #include <ucontext.h>
     38 
     39 #define UNW_TARGET		x86_64
     40 #define UNW_TARGET_X86_64	1
     41 
     42 #define _U_TDEP_QP_TRUE	0	/* see libunwind-dynamic.h  */
     43 
     44 /* This needs to be big enough to accommodate "struct cursor", while
     45    leaving some slack for future expansion.  Changing this value will
     46    require recompiling all users of this library.  Stack allocation is
     47    relatively cheap and unwind-state copying is relatively rare, so we
     48    want to err on making it rather too big than too small.  */
     49 #define UNW_TDEP_CURSOR_LEN	127
     50 
     51 typedef uint64_t unw_word_t;
     52 typedef int64_t unw_sword_t;
     53 
     54 typedef long double unw_tdep_fpreg_t;
     55 
     56 typedef enum
     57   {
     58     UNW_X86_64_RAX,
     59     UNW_X86_64_RDX,
     60     UNW_X86_64_RCX,
     61     UNW_X86_64_RBX,
     62     UNW_X86_64_RSI,
     63     UNW_X86_64_RDI,
     64     UNW_X86_64_RBP,
     65     UNW_X86_64_RSP,
     66     UNW_X86_64_R8,
     67     UNW_X86_64_R9,
     68     UNW_X86_64_R10,
     69     UNW_X86_64_R11,
     70     UNW_X86_64_R12,
     71     UNW_X86_64_R13,
     72     UNW_X86_64_R14,
     73     UNW_X86_64_R15,
     74     UNW_X86_64_RIP,
     75 #ifdef CONFIG_MSABI_SUPPORT
     76     UNW_X86_64_XMM0,
     77     UNW_X86_64_XMM1,
     78     UNW_X86_64_XMM2,
     79     UNW_X86_64_XMM3,
     80     UNW_X86_64_XMM4,
     81     UNW_X86_64_XMM5,
     82     UNW_X86_64_XMM6,
     83     UNW_X86_64_XMM7,
     84     UNW_X86_64_XMM8,
     85     UNW_X86_64_XMM9,
     86     UNW_X86_64_XMM10,
     87     UNW_X86_64_XMM11,
     88     UNW_X86_64_XMM12,
     89     UNW_X86_64_XMM13,
     90     UNW_X86_64_XMM14,
     91     UNW_X86_64_XMM15,
     92     UNW_TDEP_LAST_REG = UNW_X86_64_XMM15,
     93 #else
     94     UNW_TDEP_LAST_REG = UNW_X86_64_RIP,
     95 #endif
     96 
     97     /* XXX Add other regs here */
     98 
     99     /* frame info (read-only) */
    100     UNW_X86_64_CFA,
    101 
    102     UNW_TDEP_IP = UNW_X86_64_RIP,
    103     UNW_TDEP_SP = UNW_X86_64_RSP,
    104     UNW_TDEP_BP = UNW_X86_64_RBP,
    105     UNW_TDEP_EH = UNW_X86_64_RAX
    106   }
    107 x86_64_regnum_t;
    108 
    109 #define UNW_TDEP_NUM_EH_REGS	2	/* XXX Not sure what this means */
    110 
    111 typedef struct unw_tdep_save_loc
    112   {
    113     /* Additional target-dependent info on a save location.  */
    114     /* ANDROID support update. */
    115     char __reserved;
    116     /* End of ANDROID update. */
    117   }
    118 unw_tdep_save_loc_t;
    119 
    120 /* On x86_64, we can directly use ucontext_t as the unwind context.  */
    121 typedef ucontext_t unw_tdep_context_t;
    122 
    123 typedef struct
    124   {
    125     /* no x86-64-specific auxiliary proc-info */
    126     /* ANDROID support update. */
    127     char __reserved;
    128     /* End of ANDROID update. */
    129   }
    130 unw_tdep_proc_info_t;
    131 
    132 #include "libunwind-dynamic.h"
    133 #include "libunwind-common.h"
    134 
    135 #define unw_tdep_getcontext		UNW_ARCH_OBJ(getcontext)
    136 #define unw_tdep_is_fpreg		UNW_ARCH_OBJ(is_fpreg)
    137 
    138 extern int unw_tdep_getcontext (unw_tdep_context_t *);
    139 extern int unw_tdep_is_fpreg (int);
    140 
    141 #if defined(__cplusplus) || defined(c_plusplus)
    142 }
    143 #endif
    144 
    145 #endif /* LIBUNWIND_H */
    146