sysdeps/generic/sysdep.h

   1 /* Generic asm macros used on many machines.
   2    Copyright (C) 1991-2013 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef C_LABEL
  20
  21 /* Define a macro we can use to construct the asm name for a C symbol.  */
  22 # define C_LABEL(name)  name##:
  23
  24 #endif
  25
  26 #ifdef __ASSEMBLER__
  27 /* Mark the end of function named SYM.  This is used on some platforms
  28    to generate correct debugging information.  */
  29 # ifndef END
  30 #  define END(sym)
  31 # endif
  32
  33 # ifndef JUMPTARGET
  34 #  define JUMPTARGET(sym)       sym
  35 # endif
  36 #endif
  37
  38 /* Makros to generate eh_frame unwind information.  */
  39 #ifdef HAVE_ASM_CFI_DIRECTIVES
  40 # ifdef __ASSEMBLER__
  41 #  define cfi_startproc                 .cfi_startproc
  42 #  define cfi_endproc                   .cfi_endproc
  43 #  define cfi_def_cfa(reg, off)         .cfi_def_cfa reg, off
  44 #  define cfi_def_cfa_register(reg)     .cfi_def_cfa_register reg
  45 #  define cfi_def_cfa_offset(off)       .cfi_def_cfa_offset off
  46 #  define cfi_adjust_cfa_offset(off)    .cfi_adjust_cfa_offset off
  47 #  define cfi_offset(reg, off)          .cfi_offset reg, off
  48 #  define cfi_rel_offset(reg, off)      .cfi_rel_offset reg, off
  49 #  define cfi_register(r1, r2)          .cfi_register r1, r2
  50 #  define cfi_return_column(reg)        .cfi_return_column reg
  51 #  define cfi_restore(reg)              .cfi_restore reg
  52 #  define cfi_same_value(reg)           .cfi_same_value reg
  53 #  define cfi_undefined(reg)            .cfi_undefined reg
  54 #  define cfi_remember_state            .cfi_remember_state
  55 #  define cfi_restore_state             .cfi_restore_state
  56 #  define cfi_window_save               .cfi_window_save
  57 #  define cfi_personality(enc, exp)     .cfi_personality enc, exp
  58 #  define cfi_lsda(enc, exp)            .cfi_lsda enc, exp
  59
  60 # else /* ! ASSEMBLER */
  61
  62 #  define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
  63 #  define CFI_STRINGIFY2(Name) #Name
  64 #  define CFI_STARTPROC ".cfi_startproc"
  65 #  define CFI_ENDPROC   ".cfi_endproc"
  66 #  define CFI_DEF_CFA(reg, off) \
  67    ".cfi_def_cfa " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
  68 #  define CFI_DEF_CFA_REGISTER(reg) \
  69    ".cfi_def_cfa_register " CFI_STRINGIFY(reg)
  70 #  define CFI_DEF_CFA_OFFSET(off) \
  71    ".cfi_def_cfa_offset " CFI_STRINGIFY(off)
  72 #  define CFI_ADJUST_CFA_OFFSET(off) \
  73    ".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
  74 #  define CFI_OFFSET(reg, off) \
  75    ".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
  76 #  define CFI_REL_OFFSET(reg, off) \
  77    ".cfi_rel_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
  78 #  define CFI_REGISTER(r1, r2) \
  79    ".cfi_register " CFI_STRINGIFY(r1) "," CFI_STRINGIFY(r2)
  80 #  define CFI_RETURN_COLUMN(reg) \
  81    ".cfi_return_column " CFI_STRINGIFY(reg)
  82 #  define CFI_RESTORE(reg) \
  83    ".cfi_restore " CFI_STRINGIFY(reg)
  84 #  define CFI_UNDEFINED(reg) \
  85    ".cfi_undefined " CFI_STRINGIFY(reg)
  86 #  define CFI_REMEMBER_STATE \
  87    ".cfi_remember_state"
  88 #  define CFI_RESTORE_STATE \
  89    ".cfi_restore_state"
  90 #  define CFI_WINDOW_SAVE \
  91    ".cfi_window_save"
  92 #  define CFI_PERSONALITY(enc, exp) \
  93    ".cfi_personality " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
  94 #  define CFI_LSDA(enc, exp) \
  95    ".cfi_lsda " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
  96 # endif
  97
  98 #else
  99
 100 # define CFI_STARTPROC
 101 # define CFI_ENDPROC
 102 # define CFI_DEF_CFA(reg, off)
 103 # define CFI_DEF_CFA_REGISTER(reg)
 104 # define CFI_DEF_CFA_OFFSET(off)
 105 # define CFI_ADJUST_CFA_OFFSET(off)
 106 # define CFI_OFFSET(reg, off)
 107 # define CFI_REL_OFFSET(reg, off)
 108 # define CFI_REGISTER(r1, r2)
 109 # define CFI_RETURN_COLUMN(reg)
 110 # define CFI_RESTORE(reg)
 111 # define CFI_UNDEFINED(reg)
 112 # define CFI_REMEMBER_STATE
 113 # define CFI_RESTORE_STATE
 114 # define CFI_WINDOW_SAVE
 115 # define CFI_PERSONALITY(enc, exp)
 116 # define CFI_LSDA(enc, exp)
 117 #endif
 118
 119 #include "dwarf2.h"