sysdeps/generic/sysdep.h

   1 /* Generic asm macros used on many machines.
   2    Copyright (C) 1991-2023 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    <https://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 /* Macros to generate eh_frame unwind information.  */
  39 #ifdef __ASSEMBLER__
  40 # define cfi_startproc                  .cfi_startproc
  41 # define cfi_endproc                    .cfi_endproc
  42 # define cfi_def_cfa(reg, off)          .cfi_def_cfa reg, off
  43 # define cfi_def_cfa_register(reg)      .cfi_def_cfa_register reg
  44 # define cfi_def_cfa_offset(off)        .cfi_def_cfa_offset off
  45 # define cfi_adjust_cfa_offset(off)     .cfi_adjust_cfa_offset off
  46 # define cfi_offset(reg, off)           .cfi_offset reg, off
  47 # define cfi_rel_offset(reg, off)       .cfi_rel_offset reg, off
  48 # define cfi_register(r1, r2)           .cfi_register r1, r2
  49 # define cfi_return_column(reg) .cfi_return_column reg
  50 # define cfi_restore(reg)               .cfi_restore reg
  51 # define cfi_same_value(reg)            .cfi_same_value reg
  52 # define cfi_undefined(reg)             .cfi_undefined reg
  53 # define cfi_remember_state             .cfi_remember_state
  54 # define cfi_restore_state              .cfi_restore_state
  55 # define cfi_window_save                .cfi_window_save
  56 # define cfi_personality(enc, exp)      .cfi_personality enc, exp
  57 # define cfi_lsda(enc, exp)             .cfi_lsda enc, exp
  58
  59 #else /* ! ASSEMBLER */
  60
  61 # define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
  62 # define CFI_STRINGIFY2(Name) #Name
  63 # define CFI_STARTPROC  ".cfi_startproc"
  64 # define CFI_ENDPROC    ".cfi_endproc"
  65 # define CFI_DEF_CFA(reg, off)  \
  66    ".cfi_def_cfa " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
  67 # define CFI_DEF_CFA_REGISTER(reg) \
  68    ".cfi_def_cfa_register " CFI_STRINGIFY(reg)
  69 # define CFI_DEF_CFA_OFFSET(off) \
  70    ".cfi_def_cfa_offset " CFI_STRINGIFY(off)
  71 # define CFI_ADJUST_CFA_OFFSET(off) \
  72    ".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
  73 # define CFI_OFFSET(reg, off) \
  74    ".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
  75 # define CFI_REL_OFFSET(reg, off) \
  76    ".cfi_rel_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
  77 # define CFI_REGISTER(r1, r2) \
  78    ".cfi_register " CFI_STRINGIFY(r1) "," CFI_STRINGIFY(r2)
  79 # define CFI_RETURN_COLUMN(reg) \
  80    ".cfi_return_column " CFI_STRINGIFY(reg)
  81 # define CFI_RESTORE(reg) \
  82    ".cfi_restore " CFI_STRINGIFY(reg)
  83 # define CFI_UNDEFINED(reg) \
  84    ".cfi_undefined " CFI_STRINGIFY(reg)
  85 # define CFI_REMEMBER_STATE \
  86    ".cfi_remember_state"
  87 # define CFI_RESTORE_STATE \
  88    ".cfi_restore_state"
  89 # define CFI_WINDOW_SAVE \
  90    ".cfi_window_save"
  91 # define CFI_PERSONALITY(enc, exp) \
  92    ".cfi_personality " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
  93 # define CFI_LSDA(enc, exp) \
  94    ".cfi_lsda " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
  95 #endif
  96
  97 #include "dwarf2.h"