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    Copyright (C) 1992, 1996 Free Software Foundation, Inc.
   5    Contributed by Ron Guilmette (rfg@monkeys.com)
   6
   7
   8 This file is part of GNU CC.
   9
  10 GNU CC is free software; you can redistribute it and/or modify
  11 it under the terms of the GNU General Public License as published by
  12 the Free Software Foundation; either version 2, or (at your option)
  13 any later version.
  14
  15 GNU CC is distributed in the hope that it will be useful,
  16 but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 GNU General Public License for more details.
  19
  20 You should have received a copy of the GNU General Public License
  21 along with GNU CC; see the file COPYING.  If not, write to
  22 the Free Software Foundation, 59 Temple Place - Suite 330,
  23 Boston, MA 02111-1307, USA.  */
  24
  25 /* Store in OUTPUT a string (made with alloca) containing
  26    an assembler-name for a local static variable or function named NAME.
  27    LABELNO is an integer which is different for each call.  */
  28
  29 #ifndef ASM_FORMAT_PRIVATE_NAME
  30 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO)                  \
  31   do {                                                                  \
  32     int len = strlen (NAME);                                            \
  33     char *temp = (char *) alloca (len + 3);                             \
  34     temp[0] = 'L';                                                      \
  35     strcpy (&temp[1], (NAME));                                          \
  36     temp[len + 1] = '.';                                                \
  37     temp[len + 2] = 0;                                                  \
  38     (OUTPUT) = (char *) alloca (strlen (NAME) + 11);                    \
  39     ASM_GENERATE_INTERNAL_LABEL (OUTPUT, temp, LABELNO);                \
  40   } while (0)
  41 #endif
  42
  43 #ifndef ASM_STABD_OP
  44 #define ASM_STABD_OP ".stabd"
  45 #endif
  46
  47 /* This is how to output an element of a case-vector that is absolute.
  48    Some targets don't use this, but we have to define it anyway.  */
  49
  50 #ifndef ASM_OUTPUT_ADDR_VEC_ELT
  51 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
  52 do { fprintf (FILE, "\t%s\t", ASM_LONG);                                \
  53      ASM_OUTPUT_INTERNAL_LABEL (FILE, "L", (VALUE));                    \
  54      fputc ('\n', FILE);                                                \
  55    } while (0)
  56 #endif
  57
  58 /* choose a reasonable default for ASM_OUTPUT_ASCII.  */
  59
  60 #ifndef ASM_OUTPUT_ASCII
  61 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
  62   do {                                                                        \
  63     FILE *_hide_asm_out_file = (MYFILE);                                      \
  64     unsigned char *_hide_p = (unsigned char *) (MYSTRING);                    \
  65     int _hide_thissize = (MYLENGTH);                                          \
  66     {                                                                         \
  67       FILE *asm_out_file = _hide_asm_out_file;                                \
  68       unsigned char *p = _hide_p;                                             \
  69       int thissize = _hide_thissize;                                          \
  70       int i;                                                                  \
  71       fprintf (asm_out_file, "\t.ascii \"");                                  \
  72                                                                               \
  73       for (i = 0; i < thissize; i++)                                          \
  74         {                                                                     \
  75           register int c = p[i];                                              \
  76           if (c == '\"' || c == '\\')                                         \
  77             putc ('\\', asm_out_file);                                        \
  78           if (c >= ' ' && c < 0177)                                           \
  79             putc (c, asm_out_file);                                           \
  80           else                                                                \
  81             {                                                                 \
  82               fprintf (asm_out_file, "\\%o", c);                              \
  83               /* After an octal-escape, if a digit follows,                   \
  84                  terminate one string constant and start another.             \
  85                  The Vax assembler fails to stop reading the escape           \
  86                  after three digits, so this is the only way we               \
  87                  can get it to parse the data properly.  */                   \
  88               if (i < thissize - 1                                            \
  89                   && p[i + 1] >= '0' && p[i + 1] <= '9')                      \
  90                 fprintf (asm_out_file, "\"\n\t.ascii \"");                    \
  91           }                                                                   \
  92         }                                                                     \
  93       fprintf (asm_out_file, "\"\n");                                         \
  94     }                                                                         \
  95   }                                                                           \
  96   while (0)
  97 #endif
  98
  99 #ifndef ASM_IDENTIFY_GCC
 100   /* Default the definition, only if ASM_IDENTIFY_GCC is not set,
 101      because if it is set, we might not want ASM_IDENTIFY_LANGUAGE
 102      outputting labels, if we do want it to, then it must be defined
 103      in the tm.h file.  */
 104 #ifndef ASM_IDENTIFY_LANGUAGE
 105 #define ASM_IDENTIFY_LANGUAGE(FILE) output_lang_identify (FILE);
 106 #endif
 107 #endif
 108
 109 /* This is how we tell the assembler to equate two values.  */
 110 #ifdef SET_ASM_OP
 111 #ifndef ASM_OUTPUT_DEF
 112 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)                              \
 113  do {   fprintf ((FILE), "\t%s\t", SET_ASM_OP);                         \
 114         assemble_name (FILE, LABEL1);                                   \
 115         fprintf (FILE, ",");                                            \
 116         assemble_name (FILE, LABEL2);                                   \
 117         fprintf (FILE, "\n");                                           \
 118   } while (0)
 119 #endif
 120 #endif
 121
 122 /* This determines whether or not we support weak symbols.  */
 123 #ifndef SUPPORTS_WEAK
 124 #ifdef ASM_WEAKEN_LABEL
 125 #define SUPPORTS_WEAK 1
 126 #else
 127 #define SUPPORTS_WEAK 0
 128 #endif
 129 #endif