gcc/defaults.h

   1 /* Definitions of various defaults for how to do assembler output
   2    (most of which are designed to be appropriate for GAS or for
   3    some BSD assembler).
   4
   5    Written by Ron Guilmette (rfg@netcom.com)
   6
   7 Copyright (C) 1992 Free Software Foundation, Inc.
   8
   9 This file is part of GNU CC.
  10
  11 GNU CC is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 2, or (at your option)
  14 any later version.
  15
  16 GNU CC is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 You should have received a copy of the GNU General Public License
  22 along with GNU CC; see the file COPYING.  If not, write to
  23 the Free Software Foundation, 59 Temple Place - Suite 330,
  24 Boston, MA 02111-1307, USA.  */
  25
  26 /* Store in OUTPUT a string (made with alloca) containing
  27    an assembler-name for a local static variable or function named NAME.
  28    LABELNO is an integer which is different for each call.  */
  29
  30 #ifndef ASM_FORMAT_PRIVATE_NAME
  31 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO)                  \
  32   do {                                                                  \
  33     int len = strlen (NAME);                                            \
  34     char *temp = (char *) alloca (len + 3);                             \
  35     temp[0] = 'L';                                                      \
  36     strcpy (&temp[1], (NAME));                                          \
  37     temp[len + 1] = '.';                                                \
  38     temp[len + 2] = 0;                                                  \
  39     (OUTPUT) = (char *) alloca (strlen (NAME) + 11);                    \
  40     ASM_GENERATE_INTERNAL_LABEL (OUTPUT, temp, LABELNO);                \
  41   } while (0)
  42 #endif
  43
  44 #ifndef ASM_STABD_OP
  45 #define ASM_STABD_OP ".stabd"
  46 #endif
  47
  48 /* This is how to output an element of a case-vector that is absolute.
  49    Some targets don't use this, but we have to define it anyway.  */
  50
  51 #ifndef ASM_OUTPUT_ADDR_VEC_ELT
  52 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
  53 do { fprintf (FILE, "\t%s\t", ASM_LONG);                                \
  54      ASM_OUTPUT_INTERNAL_LABEL (FILE, "L", (VALUE));                    \
  55      fputc ('\n', FILE);                                                \
  56    } while (0)
  57 #endif
  58
  59 /* This is how to output an element of a case-vector that is relative.
  60    Some targets don't use this, but we have to define it anyway.  */
  61
  62 #ifndef ASM_OUTPUT_ADDR_DIFF_ELT
  63 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
  64 do { fprintf (FILE, "\t%s\t", ASM_SHORT);                               \
  65      ASM_OUTPUT_INTERNAL_LABEL (FILE, "L", (VALUE));                    \
  66      fputc ('-', FILE);                                                 \
  67      ASM_OUTPUT_INTERNAL_LABEL (FILE, "L", (REL));                      \
  68      fputc ('\n', FILE);                                                \
  69    } while (0)
  70 #endif
  71
  72 /* choose a reasonable default for ASM_OUTPUT_ASCII.  */
  73
  74 #ifndef ASM_OUTPUT_ASCII
  75 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
  76   do {                                                                        \
  77     FILE *_hide_asm_out_file = (MYFILE);                                      \
  78     unsigned char *_hide_p = (unsigned char *) (MYSTRING);                    \
  79     int _hide_thissize = (MYLENGTH);                                          \
  80     {                                                                         \
  81       FILE *asm_out_file = _hide_asm_out_file;                                \
  82       unsigned char *p = _hide_p;                                             \
  83       int thissize = _hide_thissize;                                          \
  84       int i;                                                                  \
  85       fprintf (asm_out_file, "\t.ascii \"");                                  \
  86                                                                               \
  87       for (i = 0; i < thissize; i++)                                          \
  88         {                                                                     \
  89           register int c = p[i];                                              \
  90           if (c == '\"' || c == '\\')                                         \
  91             putc ('\\', asm_out_file);                                        \
  92           if (c >= ' ' && c < 0177)                                           \
  93             putc (c, asm_out_file);                                           \
  94           else                                                                \
  95             {                                                                 \
  96               fprintf (asm_out_file, "\\%o", c);                              \
  97               /* After an octal-escape, if a digit follows,                   \
  98                  terminate one string constant and start another.             \
  99                  The Vax assembler fails to stop reading the escape           \
 100                  after three digits, so this is the only way we               \
 101                  can get it to parse the data properly.  */                   \
 102               if (i < thissize - 1                                            \
 103                   && p[i + 1] >= '0' && p[i + 1] <= '9')                      \
 104                 fprintf (asm_out_file, "\"\n\t.ascii \"");                    \
 105           }                                                                   \
 106         }                                                                     \
 107       fprintf (asm_out_file, "\"\n");                                         \
 108     }                                                                         \
 109   }                                                                           \
 110   while (0)
 111 #endif
 112
 113 #ifndef ASM_IDENTIFY_GCC
 114   /* Default the definition, only if ASM_IDENTIFY_GCC is not set,
 115      because if it is set, we might not want ASM_IDENTIFY_LANGUAGE
 116      outputting labels, if we do want it to, then it must be defined
 117      in the tm.h file.  */
 118 #ifndef ASM_IDENTIFY_LANGUAGE
 119 #define ASM_IDENTIFY_LANGUAGE(FILE) output_lang_identify (FILE);
 120 #endif
 121 #endif
 122
 123 /* This is how we tell the assembler to equate two values.  */
 124 #ifdef SET_ASM_OP
 125 #ifndef ASM_OUTPUT_DEF
 126 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)                              \
 127  do {   fprintf ((FILE), "\t%s\t", SET_ASM_OP);                         \
 128         assemble_name (FILE, LABEL1);                                   \
 129         fprintf (FILE, ",");                                            \
 130         assemble_name (FILE, LABEL2);                                   \
 131         fprintf (FILE, "\n");                                           \
 132   } while (0)
 133 #endif
 134 #endif
 135
 136 /* This determines whether or not we support weak symbols.  */
 137 #ifndef SUPPORTS_WEAK
 138 #ifdef ASM_WEAKEN_LABEL
 139 #define SUPPORTS_WEAK 1
 140 #else
 141 #define SUPPORTS_WEAK 0
 142 #endif
 143 #endif