sysdeps/generic/sysdep.h

   1 /* Generic asm macros used on many machines.
   2    Copyright (C) 1991,92,93,96,98,2002,2003 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef C_LABEL
  21
  22 /* Define a macro we can use to construct the asm name for a C symbol.  */
  23 #ifdef  NO_UNDERSCORES
  24 #ifdef  __STDC__
  25 #define C_LABEL(name)           name##:
  26 #else
  27 #define C_LABEL(name)           name/**/:
  28 #endif
  29 #else
  30 #ifdef  __STDC__
  31 #define C_LABEL(name)           _##name##:
  32 #else
  33 #define C_LABEL(name)           _/**/name/**/:
  34 #endif
  35 #endif
  36
  37 #endif
  38
  39 #ifdef __ASSEMBLER__
  40 /* Mark the end of function named SYM.  This is used on some platforms
  41    to generate correct debugging information.  */
  42 #ifndef END
  43 #define END(sym)
  44 #endif
  45
  46 #ifndef JUMPTARGET
  47 #define JUMPTARGET(sym)         sym
  48 #endif
  49
  50 /* Makros to generate eh_frame unwind information.  */
  51 # ifdef HAVE_ASM_CFI_DIRECTIVES
  52 #  define cfi_startproc                 .cfi_startproc
  53 #  define cfi_endproc                   .cfi_endproc
  54 #  define cfi_def_cfa(reg, off)         .cfi_def_cfa reg, off
  55 #  define cfi_def_cfa_register(reg)     .cfi_def_cfa_register reg
  56 #  define cfi_def_cfa_offset(off)       .cfi_def_cfa_offset off
  57 #  define cfi_adjust_cfa_offset(off)    .cfi_adjust_cfa_offset off
  58 #  define cfi_offset(reg, off)          .cfi_offset reg, off
  59 #  define cfi_rel_offset(reg, off)      .cfi_rel_offset reg, off
  60 #  define cfi_register(r1, r2)          .cfi_register r1, r2
  61 #  define cfi_return_column(reg)        .cfi_return_column reg
  62 #  define cfi_restore(reg)              .cfi_restore reg
  63 #  define cfi_undefined(reg)            .cfi_undefined reg
  64 #  define cfi_remember_state            .cfi_remember_state
  65 #  define cfi_restore_state             .cfi_restore_state
  66 #  define cfi_window_save               .cfi_window_save
  67 # else
  68 #  define cfi_startproc
  69 #  define cfi_endproc
  70 #  define cfi_def_cfa(reg, off)
  71 #  define cfi_def_cfa_register(reg)
  72 #  define cfi_def_cfa_offset(off)
  73 #  define cfi_adjust_cfa_offset(off)
  74 #  define cfi_offset(reg, off)
  75 #  define cfi_rel_offset(reg, off)
  76 #  define cfi_register(r1, r2)
  77 #  define cfi_return_column(reg)
  78 #  define cfi_restore(reg)
  79 #  define cfi_undefined(reg)
  80 #  define cfi_remember_state
  81 #  define cfi_restore_state
  82 #  define cfi_window_save
  83 # endif
  84
  85 #else /* ! ASSEMBLER */
  86 # ifdef HAVE_ASM_CFI_DIRECTIVES
  87 #  define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
  88 #  define CFI_STRINGIFY2(Name) #Name
  89 #  define CFI_STARTPROC ".cfi_startproc"
  90 #  define CFI_ENDPROC   ".cfi_endproc"
  91 #  define CFI_DEF_CFA(reg, off) \
  92    ".cfi_def_cfa " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
  93 #  define CFI_DEF_CFA_REGISTER(reg) \
  94    ".cfi_def_cfa_register " CFI_STRINGIFY(reg)
  95 #  define CFI_DEF_CFA_OFFSET(off) \
  96    ".cfi_def_cfa_offset " CFI_STRINGIFY(off)
  97 #  define CFI_ADJUST_CFA_OFFSET(off) \
  98    ".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
  99 #  define CFI_OFFSET(reg, off) \
 100    ".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
 101 #  define CFI_REL_OFFSET(reg, off) \
 102    ".cfi_rel_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
 103 #  define CFI_REGISTER(r1, r2) \
 104    ".cfi_register " CFI_STRINGIFY(r1) "," CFI_STRINGIFY(r2)
 105 #  define CFI_RETURN_COLUMN(reg) \
 106    ".cfi_return_column " CFI_STRINGIFY(reg)
 107 #  define CFI_RESTORE(reg) \
 108    ".cfi_restore " CFI_STRINGIFY(reg)
 109 #  define CFI_UNDEFINED(reg) \
 110    ".cfi_undefined " CFI_STRINGIFY(reg)
 111 #  define CFI_REMEMBER_STATE \
 112    ".cfi_remember_state"
 113 #  define CFI_RESTORE_STATE \
 114    ".cfi_restore_state"
 115 #  define CFI_WINDOW_SAVE \
 116    ".cfi_window_save"
 117 # else
 118 #  define CFI_STARTPROC
 119 #  define CFI_ENDPROC
 120 #  define CFI_DEF_CFA(reg, off)
 121 #  define CFI_DEF_CFA_REGISTER(reg)
 122 #  define CFI_DEF_CFA_OFFSET(off)
 123 #  define CFI_ADJUST_CFA_OFFSET(off)
 124 #  define CFI_OFFSET(reg, off)
 125 #  define CFI_REL_OFFSET(reg, off)
 126 #  define CFI_REGISTER(r1, r2)
 127 #  define CFI_RETURN_COLUMN(reg)
 128 #  define CFI_RESTORE(reg)
 129 #  define CFI_UNDEFINED(reg)
 130 #  define CFI_REMEMBER_STATE
 131 #  define CFI_RESTORE_STATE
 132 #  define CFI_WINDOW_SAVE
 133 # endif
 134
 135 #endif /* __ASSEMBLER__ */