gas/output-file.c

   1 /* output-file.c -  Deal with the output file
   2    Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1996, 1998, 1999, 2001,
   3    2003, 2004 Free Software Foundation, Inc.
   4
   5    This file is part of GAS, the GNU Assembler.
   6
   7    GAS is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    GAS is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GAS; see the file COPYING.  If not, write to
  19    the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  20    02110-1301, USA.  */
  21
  22 #include <stdio.h>
  23
  24 #include "as.h"
  25
  26 #include "output-file.h"
  27
  28 #ifdef BFD_HEADERS
  29 #define USE_BFD
  30 #endif
  31
  32 #ifdef BFD_ASSEMBLER
  33 #define USE_BFD
  34 #ifndef TARGET_MACH
  35 #define TARGET_MACH 0
  36 #endif
  37 #endif
  38
  39 #ifdef USE_BFD
  40 #include "bfd.h"
  41 bfd *stdoutput;
  42
  43 void
  44 output_file_create (char *name)
  45 {
  46   if (name[0] == '-' && name[1] == '\0')
  47     as_fatal (_("can't open a bfd on stdout %s"), name);
  48
  49   else if (!(stdoutput = bfd_openw (name, TARGET_FORMAT)))
  50     {
  51       if (bfd_get_error () == bfd_error_invalid_target)
  52         as_perror (_("Selected target format '%s' unknown"), TARGET_FORMAT);
  53       else
  54         as_perror (_("FATAL: can't create %s"), name);
  55       exit (EXIT_FAILURE);
  56     }
  57
  58   bfd_set_format (stdoutput, bfd_object);
  59 #ifdef BFD_ASSEMBLER
  60   bfd_set_arch_mach (stdoutput, TARGET_ARCH, TARGET_MACH);
  61 #endif
  62   if (flag_traditional_format)
  63     stdoutput->flags |= BFD_TRADITIONAL_FORMAT;
  64 }
  65
  66 void
  67 output_file_close (char *filename)
  68 {
  69 #ifdef BFD_ASSEMBLER
  70   /* Close the bfd.  */
  71   if (bfd_close (stdoutput) == 0)
  72     {
  73       bfd_perror (filename);
  74       as_perror (_("FATAL: can't close %s\n"), filename);
  75       exit (EXIT_FAILURE);
  76     }
  77 #else
  78   /* Close the bfd without getting bfd to write out anything by itself.  */
  79   if (bfd_close_all_done (stdoutput) == 0)
  80     {
  81       as_perror (_("FATAL: can't close %s\n"), filename);
  82       exit (EXIT_FAILURE);
  83     }
  84 #endif
  85   stdoutput = NULL;             /* Trust nobody!  */
  86 }
  87
  88 #ifndef BFD_ASSEMBLER
  89 void
  90 output_file_append (char *where ATTRIBUTE_UNUSED,
  91                     long length ATTRIBUTE_UNUSED,
  92                     char *filename ATTRIBUTE_UNUSED)
  93 {
  94   abort ();
  95 }
  96 #endif
  97
  98 #else
  99
 100 static FILE *stdoutput;
 101
 102 void
 103 output_file_create (char *name)
 104 {
 105   if (name[0] == '-' && name[1] == '\0')
 106     {
 107       stdoutput = stdout;
 108       return;
 109     }
 110
 111   stdoutput = fopen (name, FOPEN_WB);
 112   if (stdoutput == NULL)
 113     {
 114 #ifdef BFD_ASSEMBLER
 115       bfd_set_error (bfd_error_system_call);
 116 #endif
 117       as_perror (_("FATAL: can't create %s"), name);
 118       exit (EXIT_FAILURE);
 119     }
 120 }
 121
 122 void
 123 output_file_close (char *filename)
 124 {
 125   if (EOF == fclose (stdoutput))
 126     {
 127 #ifdef BFD_ASSEMBLER
 128       bfd_set_error (bfd_error_system_call);
 129 #endif
 130       as_perror (_("FATAL: can't close %s"), filename);
 131       exit (EXIT_FAILURE);
 132     }
 133
 134   /* Trust nobody!  */
 135   stdoutput = NULL;
 136 }
 137
 138 void
 139 output_file_append (char * where, long length, char * filename)
 140 {
 141   for (; length; length--, where++)
 142     {
 143       (void) putc (*where, stdoutput);
 144
 145       if (ferror (stdoutput))
 146         {
 147 #ifdef BFD_ASSEMBLER
 148           bfd_set_error (bfd_error_system_call);
 149 #endif
 150           as_perror (_("Failed to emit an object byte"), filename);
 151           as_fatal (_("can't continue"));
 152         }
 153     }
 154 }
 155
 156 #endif
 157