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5222 | serge | 1 | /* as.c - GAS main program. |
2 | Copyright 1987-2013 Free Software Foundation, Inc. |
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3 | |||
4 | This file is part of GAS, the GNU Assembler. |
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5 | |||
6 | GAS is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 3, or (at your option) |
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9 | any later version. |
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10 | |||
11 | GAS is distributed in the hope that it will be useful, but WITHOUT |
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12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
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14 | License for more details. |
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15 | |||
16 | You should have received a copy of the GNU General Public License |
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17 | along with GAS; see the file COPYING. If not, write to the Free |
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18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
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19 | 02110-1301, USA. */ |
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20 | |||
21 | /* Main program for AS; a 32-bit assembler of GNU. |
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22 | Understands command arguments. |
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23 | Has a few routines that don't fit in other modules because they |
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24 | are shared. |
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25 | |||
26 | bugs |
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27 | |||
28 | : initialisers |
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29 | Since no-one else says they will support them in future: I |
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30 | don't support them now. */ |
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31 | |||
32 | #define COMMON |
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33 | |||
34 | #include "as.h" |
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35 | #include "subsegs.h" |
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36 | #include "output-file.h" |
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37 | #include "sb.h" |
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38 | #include "macro.h" |
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39 | #include "dwarf2dbg.h" |
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40 | #include "dw2gencfi.h" |
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41 | #include "bfdver.h" |
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42 | |||
43 | #ifdef HAVE_ITBL_CPU |
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44 | #include "itbl-ops.h" |
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45 | #else |
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46 | #define itbl_init() |
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47 | #endif |
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48 | |||
49 | #ifdef HAVE_SBRK |
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50 | #ifdef NEED_DECLARATION_SBRK |
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51 | extern void *sbrk (); |
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52 | #endif |
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53 | #endif |
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54 | |||
55 | #ifdef USING_CGEN |
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56 | /* Perform any cgen specific initialisation for gas. */ |
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57 | extern void gas_cgen_begin (void); |
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58 | #endif |
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59 | |||
60 | /* We build a list of defsyms as we read the options, and then define |
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61 | them after we have initialized everything. */ |
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62 | struct defsym_list |
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63 | { |
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64 | struct defsym_list *next; |
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65 | char *name; |
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66 | valueT value; |
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67 | }; |
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68 | |||
69 | |||
70 | /* True if a listing is wanted. */ |
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71 | int listing; |
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72 | |||
73 | /* Type of debugging to generate. */ |
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74 | enum debug_info_type debug_type = DEBUG_UNSPECIFIED; |
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75 | int use_gnu_debug_info_extensions = 0; |
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76 | |||
77 | #ifndef MD_DEBUG_FORMAT_SELECTOR |
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78 | #define MD_DEBUG_FORMAT_SELECTOR NULL |
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79 | #endif |
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80 | static enum debug_info_type (*md_debug_format_selector) (int *) = MD_DEBUG_FORMAT_SELECTOR; |
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81 | |||
82 | /* Maximum level of macro nesting. */ |
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83 | int max_macro_nest = 100; |
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84 | |||
85 | /* argv[0] */ |
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86 | static char * myname; |
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87 | |||
88 | /* The default obstack chunk size. If we set this to zero, the |
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89 | obstack code will use whatever will fit in a 4096 byte block. */ |
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90 | int chunksize = 0; |
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91 | |||
92 | /* To monitor memory allocation more effectively, make this non-zero. |
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93 | Then the chunk sizes for gas and bfd will be reduced. */ |
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94 | int debug_memory = 0; |
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95 | |||
96 | /* Enable verbose mode. */ |
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97 | int verbose = 0; |
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98 | |||
99 | /* Keep the output file. */ |
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100 | int keep_it = 0; |
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101 | |||
102 | segT reg_section; |
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103 | segT expr_section; |
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104 | segT text_section; |
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105 | segT data_section; |
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106 | segT bss_section; |
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107 | |||
108 | /* Name of listing file. */ |
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109 | static char *listing_filename = NULL; |
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110 | |||
111 | static struct defsym_list *defsyms; |
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112 | |||
113 | #ifdef HAVE_ITBL_CPU |
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114 | /* Keep a record of the itbl files we read in. */ |
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115 | struct itbl_file_list |
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116 | { |
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117 | struct itbl_file_list *next; |
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118 | char *name; |
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119 | }; |
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120 | static struct itbl_file_list *itbl_files; |
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121 | #endif |
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122 | |||
123 | static long start_time; |
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124 | #ifdef HAVE_SBRK |
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125 | char *start_sbrk; |
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126 | #endif |
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127 | |||
128 | static int flag_macro_alternate; |
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129 | |||
130 | |||
131 | #ifdef USE_EMULATIONS |
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132 | #define EMULATION_ENVIRON "AS_EMULATION" |
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133 | |||
134 | extern struct emulation mipsbelf, mipslelf, mipself; |
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135 | extern struct emulation i386coff, i386elf, i386aout; |
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136 | extern struct emulation crisaout, criself; |
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137 | |||
138 | static struct emulation *const emulations[] = { EMULATIONS }; |
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139 | static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]); |
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140 | |||
141 | static void |
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142 | select_emulation_mode (int argc, char **argv) |
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143 | { |
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144 | int i; |
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145 | char *p, *em = 0; |
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146 | |||
147 | for (i = 1; i < argc; i++) |
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148 | if (!strncmp ("--em", argv[i], 4)) |
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149 | break; |
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150 | |||
151 | if (i == argc) |
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152 | goto do_default; |
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153 | |||
154 | p = strchr (argv[i], '='); |
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155 | if (p) |
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156 | p++; |
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157 | else |
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158 | p = argv[i + 1]; |
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159 | |||
160 | if (!p || !*p) |
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161 | as_fatal (_("missing emulation mode name")); |
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162 | em = p; |
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163 | |||
164 | do_default: |
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165 | if (em == 0) |
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166 | em = getenv (EMULATION_ENVIRON); |
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167 | if (em == 0) |
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168 | em = DEFAULT_EMULATION; |
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169 | |||
170 | if (em) |
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171 | { |
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172 | for (i = 0; i < n_emulations; i++) |
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173 | if (!strcmp (emulations[i]->name, em)) |
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174 | break; |
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175 | if (i == n_emulations) |
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176 | as_fatal (_("unrecognized emulation name `%s'"), em); |
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177 | this_emulation = emulations[i]; |
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178 | } |
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179 | else |
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180 | this_emulation = emulations[0]; |
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181 | |||
182 | this_emulation->init (); |
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183 | } |
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184 | |||
185 | const char * |
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186 | default_emul_bfd_name (void) |
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187 | { |
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188 | abort (); |
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189 | return NULL; |
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190 | } |
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191 | |||
192 | void |
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193 | common_emul_init (void) |
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194 | { |
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195 | this_format = this_emulation->format; |
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196 | |||
197 | if (this_emulation->leading_underscore == 2) |
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198 | this_emulation->leading_underscore = this_format->dfl_leading_underscore; |
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199 | |||
200 | if (this_emulation->default_endian != 2) |
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201 | target_big_endian = this_emulation->default_endian; |
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202 | |||
203 | if (this_emulation->fake_label_name == 0) |
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204 | { |
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205 | if (this_emulation->leading_underscore) |
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206 | this_emulation->fake_label_name = "L0\001"; |
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207 | else |
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208 | /* What other parameters should we test? */ |
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209 | this_emulation->fake_label_name = ".L0\001"; |
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210 | } |
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211 | } |
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212 | #endif |
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213 | |||
214 | void |
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215 | print_version_id (void) |
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216 | { |
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217 | static int printed; |
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218 | |||
219 | if (printed) |
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220 | return; |
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221 | printed = 1; |
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222 | |||
223 | fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s\n"), |
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224 | VERSION, TARGET_ALIAS, BFD_VERSION_STRING); |
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225 | } |
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226 | |||
227 | static void |
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228 | show_usage (FILE * stream) |
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229 | { |
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230 | fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname); |
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231 | |||
232 | fprintf (stream, _("\ |
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233 | Options:\n\ |
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234 | -a[sub-option...] turn on listings\n\ |
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235 | Sub-options [default hls]:\n\ |
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236 | c omit false conditionals\n\ |
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237 | d omit debugging directives\n\ |
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238 | g include general info\n\ |
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239 | h include high-level source\n\ |
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240 | l include assembly\n\ |
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241 | m include macro expansions\n\ |
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242 | n omit forms processing\n\ |
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243 | s include symbols\n\ |
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244 | =FILE list to FILE (must be last sub-option)\n")); |
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245 | |||
246 | fprintf (stream, _("\ |
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247 | --alternate initially turn on alternate macro syntax\n")); |
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248 | #ifdef HAVE_ZLIB_H |
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249 | fprintf (stream, _("\ |
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250 | --compress-debug-sections\n\ |
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251 | compress DWARF debug sections using zlib\n")); |
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252 | fprintf (stream, _("\ |
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253 | --nocompress-debug-sections\n\ |
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254 | don't compress DWARF debug sections\n")); |
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255 | #endif /* HAVE_ZLIB_H */ |
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256 | fprintf (stream, _("\ |
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257 | -D produce assembler debugging messages\n")); |
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258 | fprintf (stream, _("\ |
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259 | --debug-prefix-map OLD=NEW\n\ |
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260 | map OLD to NEW in debug information\n")); |
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261 | fprintf (stream, _("\ |
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262 | --defsym SYM=VAL define symbol SYM to given value\n")); |
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263 | #ifdef USE_EMULATIONS |
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264 | { |
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265 | int i; |
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266 | char *def_em; |
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267 | |||
268 | fprintf (stream, "\ |
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269 | --em=["); |
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270 | for (i = 0; i < n_emulations - 1; i++) |
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271 | fprintf (stream, "%s | ", emulations[i]->name); |
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272 | fprintf (stream, "%s]\n", emulations[i]->name); |
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273 | |||
274 | def_em = getenv (EMULATION_ENVIRON); |
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275 | if (!def_em) |
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276 | def_em = DEFAULT_EMULATION; |
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277 | fprintf (stream, _("\ |
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278 | emulate output (default %s)\n"), def_em); |
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279 | } |
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280 | #endif |
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281 | #if defined OBJ_ELF || defined OBJ_MAYBE_ELF |
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282 | fprintf (stream, _("\ |
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283 | --execstack require executable stack for this object\n")); |
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284 | fprintf (stream, _("\ |
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285 | --noexecstack don't require executable stack for this object\n")); |
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286 | fprintf (stream, _("\ |
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287 | --size-check=[error|warning]\n\ |
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288 | ELF .size directive check (default --size-check=error)\n")); |
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289 | #endif |
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290 | fprintf (stream, _("\ |
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291 | -f skip whitespace and comment preprocessing\n")); |
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292 | fprintf (stream, _("\ |
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293 | -g --gen-debug generate debugging information\n")); |
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294 | fprintf (stream, _("\ |
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295 | --gstabs generate STABS debugging information\n")); |
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296 | fprintf (stream, _("\ |
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297 | --gstabs+ generate STABS debug info with GNU extensions\n")); |
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298 | fprintf (stream, _("\ |
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299 | --gdwarf-2 generate DWARF2 debugging information\n")); |
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300 | fprintf (stream, _("\ |
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301 | --gdwarf-sections generate per-function section names for DWARF line information\n")); |
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302 | fprintf (stream, _("\ |
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303 | --hash-size= |
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304 | fprintf (stream, _("\ |
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305 | --help show this message and exit\n")); |
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306 | fprintf (stream, _("\ |
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307 | --target-help show target specific options\n")); |
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308 | fprintf (stream, _("\ |
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309 | -I DIR add DIR to search list for .include directives\n")); |
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310 | fprintf (stream, _("\ |
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311 | -J don't warn about signed overflow\n")); |
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312 | fprintf (stream, _("\ |
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313 | -K warn when differences altered for long displacements\n")); |
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314 | fprintf (stream, _("\ |
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315 | -L,--keep-locals keep local symbols (e.g. starting with `L')\n")); |
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316 | fprintf (stream, _("\ |
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317 | -M,--mri assemble in MRI compatibility mode\n")); |
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318 | fprintf (stream, _("\ |
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319 | --MD FILE write dependency information in FILE (default none)\n")); |
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320 | fprintf (stream, _("\ |
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321 | -nocpp ignored\n")); |
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322 | fprintf (stream, _("\ |
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323 | -o OBJFILE name the object-file output OBJFILE (default a.out)\n")); |
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324 | fprintf (stream, _("\ |
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325 | -R fold data section into text section\n")); |
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326 | fprintf (stream, _("\ |
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327 | --reduce-memory-overheads \n\ |
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328 | prefer smaller memory use at the cost of longer\n\ |
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329 | assembly times\n")); |
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330 | fprintf (stream, _("\ |
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331 | --statistics print various measured statistics from execution\n")); |
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332 | fprintf (stream, _("\ |
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333 | --strip-local-absolute strip local absolute symbols\n")); |
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334 | fprintf (stream, _("\ |
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335 | --traditional-format Use same format as native assembler when possible\n")); |
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336 | fprintf (stream, _("\ |
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337 | --version print assembler version number and exit\n")); |
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338 | fprintf (stream, _("\ |
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339 | -W --no-warn suppress warnings\n")); |
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340 | fprintf (stream, _("\ |
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341 | --warn don't suppress warnings\n")); |
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342 | fprintf (stream, _("\ |
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343 | --fatal-warnings treat warnings as errors\n")); |
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344 | #ifdef HAVE_ITBL_CPU |
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345 | fprintf (stream, _("\ |
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346 | --itbl INSTTBL extend instruction set to include instructions\n\ |
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347 | matching the specifications defined in file INSTTBL\n")); |
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348 | #endif |
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349 | fprintf (stream, _("\ |
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350 | -w ignored\n")); |
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351 | fprintf (stream, _("\ |
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352 | -X ignored\n")); |
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353 | fprintf (stream, _("\ |
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354 | -Z generate object file even after errors\n")); |
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355 | fprintf (stream, _("\ |
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356 | --listing-lhs-width set the width in words of the output data column of\n\ |
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357 | the listing\n")); |
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358 | fprintf (stream, _("\ |
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359 | --listing-lhs-width2 set the width in words of the continuation lines\n\ |
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360 | of the output data column; ignored if smaller than\n\ |
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361 | the width of the first line\n")); |
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362 | fprintf (stream, _("\ |
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363 | --listing-rhs-width set the max width in characters of the lines from\n\ |
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364 | the source file\n")); |
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365 | fprintf (stream, _("\ |
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366 | --listing-cont-lines set the maximum number of continuation lines used\n\ |
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367 | for the output data column of the listing\n")); |
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368 | fprintf (stream, _("\ |
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369 | @FILE read options from FILE\n")); |
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370 | |||
371 | md_show_usage (stream); |
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372 | |||
373 | fputc ('\n', stream); |
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374 | |||
375 | if (REPORT_BUGS_TO[0] && stream == stdout) |
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376 | fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); |
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377 | } |
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378 | |||
379 | /* Since it is easy to do here we interpret the special arg "-" |
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380 | to mean "use stdin" and we set that argv[] pointing to "". |
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381 | After we have munged argv[], the only things left are source file |
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382 | name(s) and ""(s) denoting stdin. These file names are used |
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383 | (perhaps more than once) later. |
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384 | |||
385 | check for new machine-dep cmdline options in |
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386 | md_parse_option definitions in config/tc-*.c. */ |
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387 | |||
388 | static void |
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389 | parse_args (int * pargc, char *** pargv) |
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390 | { |
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391 | int old_argc; |
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392 | int new_argc; |
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393 | char ** old_argv; |
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394 | char ** new_argv; |
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395 | /* Starting the short option string with '-' is for programs that |
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396 | expect options and other ARGV-elements in any order and that care about |
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397 | the ordering of the two. We describe each non-option ARGV-element |
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398 | as if it were the argument of an option with character code 1. */ |
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399 | char *shortopts; |
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400 | extern const char *md_shortopts; |
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401 | static const char std_shortopts[] = |
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402 | { |
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403 | '-', 'J', |
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404 | #ifndef WORKING_DOT_WORD |
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405 | /* -K is not meaningful if .word is not being hacked. */ |
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406 | 'K', |
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407 | #endif |
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408 | 'L', 'M', 'R', 'W', 'Z', 'a', ':', ':', 'D', 'f', 'g', ':',':', 'I', ':', 'o', ':', |
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409 | #ifndef VMS |
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410 | /* -v takes an argument on VMS, so we don't make it a generic |
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411 | option. */ |
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412 | 'v', |
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413 | #endif |
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414 | 'w', 'X', |
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415 | #ifdef HAVE_ITBL_CPU |
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416 | /* New option for extending instruction set (see also --itbl below). */ |
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417 | 't', ':', |
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418 | #endif |
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419 | '\0' |
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420 | }; |
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421 | struct option *longopts; |
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422 | extern struct option md_longopts[]; |
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423 | extern size_t md_longopts_size; |
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424 | /* Codes used for the long options with no short synonyms. */ |
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425 | enum option_values |
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426 | { |
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427 | OPTION_HELP = OPTION_STD_BASE, |
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428 | OPTION_NOCPP, |
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429 | OPTION_STATISTICS, |
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430 | OPTION_VERSION, |
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431 | OPTION_DUMPCONFIG, |
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432 | OPTION_VERBOSE, |
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433 | OPTION_EMULATION, |
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434 | OPTION_DEBUG_PREFIX_MAP, |
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435 | OPTION_DEFSYM, |
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436 | OPTION_LISTING_LHS_WIDTH, |
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437 | OPTION_LISTING_LHS_WIDTH2, |
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438 | OPTION_LISTING_RHS_WIDTH, |
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439 | OPTION_LISTING_CONT_LINES, |
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440 | OPTION_DEPFILE, |
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441 | OPTION_GSTABS, |
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442 | OPTION_GSTABS_PLUS, |
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443 | OPTION_GDWARF2, |
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444 | OPTION_GDWARF_SECTIONS, |
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445 | OPTION_STRIP_LOCAL_ABSOLUTE, |
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446 | OPTION_TRADITIONAL_FORMAT, |
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447 | OPTION_WARN, |
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448 | OPTION_TARGET_HELP, |
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449 | OPTION_EXECSTACK, |
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450 | OPTION_NOEXECSTACK, |
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451 | OPTION_SIZE_CHECK, |
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452 | OPTION_ALTERNATE, |
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453 | OPTION_AL, |
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454 | OPTION_HASH_TABLE_SIZE, |
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455 | OPTION_REDUCE_MEMORY_OVERHEADS, |
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456 | OPTION_WARN_FATAL, |
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457 | OPTION_COMPRESS_DEBUG, |
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458 | OPTION_NOCOMPRESS_DEBUG |
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459 | /* When you add options here, check that they do |
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460 | not collide with OPTION_MD_BASE. See as.h. */ |
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461 | }; |
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462 | |||
463 | static const struct option std_longopts[] = |
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464 | { |
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465 | /* Note: commas are placed at the start of the line rather than |
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466 | the end of the preceding line so that it is simpler to |
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467 | selectively add and remove lines from this list. */ |
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468 | {"alternate", no_argument, NULL, OPTION_ALTERNATE} |
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469 | /* The entry for "a" is here to prevent getopt_long_only() from |
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470 | considering that -a is an abbreviation for --alternate. This is |
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471 | necessary because -a= |
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472 | normally reject it since --alternate does not take an argument. */ |
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473 | ,{"a", optional_argument, NULL, 'a'} |
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474 | /* Handle -al= |
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475 | ,{"al", optional_argument, NULL, OPTION_AL} |
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476 | ,{"compress-debug-sections", no_argument, NULL, OPTION_COMPRESS_DEBUG} |
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477 | ,{"nocompress-debug-sections", no_argument, NULL, OPTION_NOCOMPRESS_DEBUG} |
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478 | ,{"debug-prefix-map", required_argument, NULL, OPTION_DEBUG_PREFIX_MAP} |
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479 | ,{"defsym", required_argument, NULL, OPTION_DEFSYM} |
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480 | ,{"dump-config", no_argument, NULL, OPTION_DUMPCONFIG} |
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481 | ,{"emulation", required_argument, NULL, OPTION_EMULATION} |
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482 | #if defined OBJ_ELF || defined OBJ_MAYBE_ELF |
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483 | ,{"execstack", no_argument, NULL, OPTION_EXECSTACK} |
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484 | ,{"noexecstack", no_argument, NULL, OPTION_NOEXECSTACK} |
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485 | ,{"size-check", required_argument, NULL, OPTION_SIZE_CHECK} |
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486 | #endif |
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487 | ,{"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL} |
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488 | ,{"gdwarf-2", no_argument, NULL, OPTION_GDWARF2} |
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489 | /* GCC uses --gdwarf-2 but GAS uses to use --gdwarf2, |
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490 | so we keep it here for backwards compatibility. */ |
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491 | ,{"gdwarf2", no_argument, NULL, OPTION_GDWARF2} |
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492 | ,{"gdwarf-sections", no_argument, NULL, OPTION_GDWARF_SECTIONS} |
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493 | ,{"gen-debug", no_argument, NULL, 'g'} |
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494 | ,{"gstabs", no_argument, NULL, OPTION_GSTABS} |
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495 | ,{"gstabs+", no_argument, NULL, OPTION_GSTABS_PLUS} |
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496 | ,{"hash-size", required_argument, NULL, OPTION_HASH_TABLE_SIZE} |
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497 | ,{"help", no_argument, NULL, OPTION_HELP} |
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498 | #ifdef HAVE_ITBL_CPU |
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499 | /* New option for extending instruction set (see also -t above). |
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500 | The "-t file" or "--itbl file" option extends the basic set of |
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501 | valid instructions by reading "file", a text file containing a |
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502 | list of instruction formats. The additional opcodes and their |
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503 | formats are added to the built-in set of instructions, and |
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504 | mnemonics for new registers may also be defined. */ |
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505 | ,{"itbl", required_argument, NULL, 't'} |
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506 | #endif |
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507 | /* getopt allows abbreviations, so we do this to stop it from |
||
508 | treating -k as an abbreviation for --keep-locals. Some |
||
509 | ports use -k to enable PIC assembly. */ |
||
510 | ,{"keep-locals", no_argument, NULL, 'L'} |
||
511 | ,{"keep-locals", no_argument, NULL, 'L'} |
||
512 | ,{"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH} |
||
513 | ,{"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2} |
||
514 | ,{"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH} |
||
515 | ,{"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES} |
||
516 | ,{"MD", required_argument, NULL, OPTION_DEPFILE} |
||
517 | ,{"mri", no_argument, NULL, 'M'} |
||
518 | ,{"nocpp", no_argument, NULL, OPTION_NOCPP} |
||
519 | ,{"no-warn", no_argument, NULL, 'W'} |
||
520 | ,{"reduce-memory-overheads", no_argument, NULL, OPTION_REDUCE_MEMORY_OVERHEADS} |
||
521 | ,{"statistics", no_argument, NULL, OPTION_STATISTICS} |
||
522 | ,{"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE} |
||
523 | ,{"version", no_argument, NULL, OPTION_VERSION} |
||
524 | ,{"verbose", no_argument, NULL, OPTION_VERBOSE} |
||
525 | ,{"target-help", no_argument, NULL, OPTION_TARGET_HELP} |
||
526 | ,{"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT} |
||
527 | ,{"warn", no_argument, NULL, OPTION_WARN} |
||
528 | }; |
||
529 | |||
530 | /* Construct the option lists from the standard list and the target |
||
531 | dependent list. Include space for an extra NULL option and |
||
532 | always NULL terminate. */ |
||
533 | shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); |
||
534 | longopts = (struct option *) xmalloc (sizeof (std_longopts) |
||
535 | + md_longopts_size + sizeof (struct option)); |
||
536 | memcpy (longopts, std_longopts, sizeof (std_longopts)); |
||
537 | memcpy (((char *) longopts) + sizeof (std_longopts), md_longopts, md_longopts_size); |
||
538 | memset (((char *) longopts) + sizeof (std_longopts) + md_longopts_size, |
||
539 | 0, sizeof (struct option)); |
||
540 | |||
541 | /* Make a local copy of the old argv. */ |
||
542 | old_argc = *pargc; |
||
543 | old_argv = *pargv; |
||
544 | |||
545 | /* Initialize a new argv that contains no options. */ |
||
546 | new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1)); |
||
547 | new_argv[0] = old_argv[0]; |
||
548 | new_argc = 1; |
||
549 | new_argv[new_argc] = NULL; |
||
550 | |||
551 | while (1) |
||
552 | { |
||
553 | /* getopt_long_only is like getopt_long, but '-' as well as '--' can |
||
554 | indicate a long option. */ |
||
555 | int longind; |
||
556 | int optc = getopt_long_only (old_argc, old_argv, shortopts, longopts, |
||
557 | &longind); |
||
558 | |||
559 | if (optc == -1) |
||
560 | break; |
||
561 | |||
562 | switch (optc) |
||
563 | { |
||
564 | default: |
||
565 | /* md_parse_option should return 1 if it recognizes optc, |
||
566 | |||
567 | if (md_parse_option (optc, optarg) != 0) |
||
568 | break; |
||
569 | /* `-v' isn't included in the general short_opts list, so check for |
||
570 | it explicitly here before deciding we've gotten a bad argument. */ |
||
571 | if (optc == 'v') |
||
572 | { |
||
573 | #ifdef VMS |
||
574 | /* Telling getopt to treat -v's value as optional can result |
||
575 | in it picking up a following filename argument here. The |
||
576 | VMS code in md_parse_option can return 0 in that case, |
||
577 | but it has no way of pushing the filename argument back. */ |
||
578 | if (optarg && *optarg) |
||
579 | new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL; |
||
580 | else |
||
581 | #else |
||
582 | case 'v': |
||
583 | #endif |
||
584 | case OPTION_VERBOSE: |
||
585 | print_version_id (); |
||
586 | verbose = 1; |
||
587 | break; |
||
588 | } |
||
589 | else |
||
590 | as_bad (_("unrecognized option -%c%s"), optc, optarg ? optarg : ""); |
||
591 | /* Fall through. */ |
||
592 | |||
593 | case '?': |
||
594 | exit (EXIT_FAILURE); |
||
595 | |||
596 | case 1: /* File name. */ |
||
597 | if (!strcmp (optarg, "-")) |
||
598 | optarg = ""; |
||
599 | new_argv[new_argc++] = optarg; |
||
600 | new_argv[new_argc] = NULL; |
||
601 | break; |
||
602 | |||
603 | case OPTION_TARGET_HELP: |
||
604 | md_show_usage (stdout); |
||
605 | exit (EXIT_SUCCESS); |
||
606 | |||
607 | case OPTION_HELP: |
||
608 | show_usage (stdout); |
||
609 | exit (EXIT_SUCCESS); |
||
610 | |||
611 | case OPTION_NOCPP: |
||
612 | break; |
||
613 | |||
614 | case OPTION_STATISTICS: |
||
615 | flag_print_statistics = 1; |
||
616 | break; |
||
617 | |||
618 | case OPTION_STRIP_LOCAL_ABSOLUTE: |
||
619 | flag_strip_local_absolute = 1; |
||
620 | break; |
||
621 | |||
622 | case OPTION_TRADITIONAL_FORMAT: |
||
623 | flag_traditional_format = 1; |
||
624 | break; |
||
625 | |||
626 | case OPTION_VERSION: |
||
627 | /* This output is intended to follow the GNU standards document. */ |
||
628 | printf (_("GNU assembler %s\n"), BFD_VERSION_STRING); |
||
629 | printf (_("Copyright 2013 Free Software Foundation, Inc.\n")); |
||
630 | printf (_("\ |
||
631 | This program is free software; you may redistribute it under the terms of\n\ |
||
632 | the GNU General Public License version 3 or later.\n\ |
||
633 | This program has absolutely no warranty.\n")); |
||
634 | printf (_("This assembler was configured for a target of `%s'.\n"), |
||
635 | TARGET_ALIAS); |
||
636 | exit (EXIT_SUCCESS); |
||
637 | |||
638 | case OPTION_EMULATION: |
||
639 | #ifdef USE_EMULATIONS |
||
640 | if (strcmp (optarg, this_emulation->name)) |
||
641 | as_fatal (_("multiple emulation names specified")); |
||
642 | #else |
||
643 | as_fatal (_("emulations not handled in this configuration")); |
||
644 | #endif |
||
645 | break; |
||
646 | |||
647 | case OPTION_DUMPCONFIG: |
||
648 | fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS); |
||
649 | fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL); |
||
650 | fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU); |
||
651 | #ifdef TARGET_OBJ_FORMAT |
||
652 | fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT); |
||
653 | #endif |
||
654 | #ifdef TARGET_FORMAT |
||
655 | fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT); |
||
656 | #endif |
||
657 | exit (EXIT_SUCCESS); |
||
658 | |||
659 | case OPTION_COMPRESS_DEBUG: |
||
660 | #ifdef HAVE_ZLIB_H |
||
661 | flag_compress_debug = 1; |
||
662 | #else |
||
663 | as_warn (_("cannot compress debug sections (zlib not installed)")); |
||
664 | #endif /* HAVE_ZLIB_H */ |
||
665 | break; |
||
666 | |||
667 | case OPTION_NOCOMPRESS_DEBUG: |
||
668 | flag_compress_debug = 0; |
||
669 | break; |
||
670 | |||
671 | case OPTION_DEBUG_PREFIX_MAP: |
||
672 | add_debug_prefix_map (optarg); |
||
673 | break; |
||
674 | |||
675 | case OPTION_DEFSYM: |
||
676 | { |
||
677 | char *s; |
||
678 | valueT i; |
||
679 | struct defsym_list *n; |
||
680 | |||
681 | for (s = optarg; *s != '\0' && *s != '='; s++) |
||
682 | ; |
||
683 | if (*s == '\0') |
||
684 | as_fatal (_("bad defsym; format is --defsym name=value")); |
||
685 | *s++ = '\0'; |
||
686 | i = bfd_scan_vma (s, (const char **) NULL, 0); |
||
687 | n = (struct defsym_list *) xmalloc (sizeof *n); |
||
688 | n->next = defsyms; |
||
689 | n->name = optarg; |
||
690 | n->value = i; |
||
691 | defsyms = n; |
||
692 | } |
||
693 | break; |
||
694 | |||
695 | #ifdef HAVE_ITBL_CPU |
||
696 | case 't': |
||
697 | { |
||
698 | /* optarg is the name of the file containing the instruction |
||
699 | formats, opcodes, register names, etc. */ |
||
700 | struct itbl_file_list *n; |
||
701 | |||
702 | if (optarg == NULL) |
||
703 | { |
||
704 | as_warn (_("no file name following -t option")); |
||
705 | break; |
||
706 | } |
||
707 | |||
708 | n = xmalloc (sizeof * n); |
||
709 | n->next = itbl_files; |
||
710 | n->name = optarg; |
||
711 | itbl_files = n; |
||
712 | |||
713 | /* Parse the file and add the new instructions to our internal |
||
714 | table. If multiple instruction tables are specified, the |
||
715 | information from this table gets appended onto the existing |
||
716 | internal table. */ |
||
717 | itbl_files->name = xstrdup (optarg); |
||
718 | if (itbl_parse (itbl_files->name) != 0) |
||
719 | as_fatal (_("failed to read instruction table %s\n"), |
||
720 | itbl_files->name); |
||
721 | } |
||
722 | break; |
||
723 | #endif |
||
724 | |||
725 | case OPTION_DEPFILE: |
||
726 | start_dependencies (optarg); |
||
727 | break; |
||
728 | |||
729 | case 'g': |
||
730 | /* Some backends, eg Alpha and Mips, use the -g switch for their |
||
731 | own purposes. So we check here for an explicit -g and allow |
||
732 | the backend to decide if it wants to process it. */ |
||
733 | if ( old_argv[optind - 1][1] == 'g' |
||
734 | && md_parse_option (optc, optarg)) |
||
735 | continue; |
||
736 | |||
737 | if (md_debug_format_selector) |
||
738 | debug_type = md_debug_format_selector (& use_gnu_debug_info_extensions); |
||
739 | else if (IS_ELF) |
||
740 | debug_type = DEBUG_DWARF2; |
||
741 | else |
||
742 | debug_type = DEBUG_STABS; |
||
743 | break; |
||
744 | |||
745 | case OPTION_GSTABS_PLUS: |
||
746 | use_gnu_debug_info_extensions = 1; |
||
747 | /* Fall through. */ |
||
748 | case OPTION_GSTABS: |
||
749 | debug_type = DEBUG_STABS; |
||
750 | break; |
||
751 | |||
752 | case OPTION_GDWARF2: |
||
753 | debug_type = DEBUG_DWARF2; |
||
754 | break; |
||
755 | |||
756 | case OPTION_GDWARF_SECTIONS: |
||
757 | flag_dwarf_sections = TRUE; |
||
758 | break; |
||
759 | |||
760 | case 'J': |
||
761 | flag_signed_overflow_ok = 1; |
||
762 | break; |
||
763 | |||
764 | #ifndef WORKING_DOT_WORD |
||
765 | case 'K': |
||
766 | flag_warn_displacement = 1; |
||
767 | break; |
||
768 | #endif |
||
769 | case 'L': |
||
770 | flag_keep_locals = 1; |
||
771 | break; |
||
772 | |||
773 | case OPTION_LISTING_LHS_WIDTH: |
||
774 | listing_lhs_width = atoi (optarg); |
||
775 | if (listing_lhs_width_second < listing_lhs_width) |
||
776 | listing_lhs_width_second = listing_lhs_width; |
||
777 | break; |
||
778 | case OPTION_LISTING_LHS_WIDTH2: |
||
779 | { |
||
780 | int tmp = atoi (optarg); |
||
781 | |||
782 | if (tmp > listing_lhs_width) |
||
783 | listing_lhs_width_second = tmp; |
||
784 | } |
||
785 | break; |
||
786 | case OPTION_LISTING_RHS_WIDTH: |
||
787 | listing_rhs_width = atoi (optarg); |
||
788 | break; |
||
789 | case OPTION_LISTING_CONT_LINES: |
||
790 | listing_lhs_cont_lines = atoi (optarg); |
||
791 | break; |
||
792 | |||
793 | case 'M': |
||
794 | flag_mri = 1; |
||
795 | #ifdef TC_M68K |
||
796 | flag_m68k_mri = 1; |
||
797 | #endif |
||
798 | break; |
||
799 | |||
800 | case 'R': |
||
801 | flag_readonly_data_in_text = 1; |
||
802 | break; |
||
803 | |||
804 | case 'W': |
||
805 | flag_no_warnings = 1; |
||
806 | break; |
||
807 | |||
808 | case OPTION_WARN: |
||
809 | flag_no_warnings = 0; |
||
810 | flag_fatal_warnings = 0; |
||
811 | break; |
||
812 | |||
813 | case OPTION_WARN_FATAL: |
||
814 | flag_no_warnings = 0; |
||
815 | flag_fatal_warnings = 1; |
||
816 | break; |
||
817 | |||
818 | #if defined OBJ_ELF || defined OBJ_MAYBE_ELF |
||
819 | case OPTION_EXECSTACK: |
||
820 | flag_execstack = 1; |
||
821 | flag_noexecstack = 0; |
||
822 | break; |
||
823 | |||
824 | case OPTION_NOEXECSTACK: |
||
825 | flag_noexecstack = 1; |
||
826 | flag_execstack = 0; |
||
827 | break; |
||
828 | |||
829 | case OPTION_SIZE_CHECK: |
||
830 | if (strcasecmp (optarg, "error") == 0) |
||
831 | flag_size_check = size_check_error; |
||
832 | else if (strcasecmp (optarg, "warning") == 0) |
||
833 | flag_size_check = size_check_warning; |
||
834 | else |
||
835 | as_fatal (_("Invalid --size-check= option: `%s'"), optarg); |
||
836 | break; |
||
837 | #endif |
||
838 | case 'Z': |
||
839 | flag_always_generate_output = 1; |
||
840 | break; |
||
841 | |||
842 | case OPTION_AL: |
||
843 | listing |= LISTING_LISTING; |
||
844 | if (optarg) |
||
845 | listing_filename = xstrdup (optarg); |
||
846 | break; |
||
847 | |||
848 | case OPTION_ALTERNATE: |
||
849 | optarg = old_argv [optind - 1]; |
||
850 | while (* optarg == '-') |
||
851 | optarg ++; |
||
852 | |||
853 | if (strcmp (optarg, "alternate") == 0) |
||
854 | { |
||
855 | flag_macro_alternate = 1; |
||
856 | break; |
||
857 | } |
||
858 | optarg ++; |
||
859 | /* Fall through. */ |
||
860 | |||
861 | case 'a': |
||
862 | if (optarg) |
||
863 | { |
||
864 | if (optarg != old_argv[optind] && optarg[-1] == '=') |
||
865 | --optarg; |
||
866 | |||
867 | if (md_parse_option (optc, optarg) != 0) |
||
868 | break; |
||
869 | |||
870 | while (*optarg) |
||
871 | { |
||
872 | switch (*optarg) |
||
873 | { |
||
874 | case 'c': |
||
875 | listing |= LISTING_NOCOND; |
||
876 | break; |
||
877 | case 'd': |
||
878 | listing |= LISTING_NODEBUG; |
||
879 | break; |
||
880 | case 'g': |
||
881 | listing |= LISTING_GENERAL; |
||
882 | break; |
||
883 | case 'h': |
||
884 | listing |= LISTING_HLL; |
||
885 | break; |
||
886 | case 'l': |
||
887 | listing |= LISTING_LISTING; |
||
888 | break; |
||
889 | case 'm': |
||
890 | listing |= LISTING_MACEXP; |
||
891 | break; |
||
892 | case 'n': |
||
893 | listing |= LISTING_NOFORM; |
||
894 | break; |
||
895 | case 's': |
||
896 | listing |= LISTING_SYMBOLS; |
||
897 | break; |
||
898 | case '=': |
||
899 | listing_filename = xstrdup (optarg + 1); |
||
900 | optarg += strlen (listing_filename); |
||
901 | break; |
||
902 | default: |
||
903 | as_fatal (_("invalid listing option `%c'"), *optarg); |
||
904 | break; |
||
905 | } |
||
906 | optarg++; |
||
907 | } |
||
908 | } |
||
909 | if (!listing) |
||
910 | listing = LISTING_DEFAULT; |
||
911 | break; |
||
912 | |||
913 | case 'D': |
||
914 | /* DEBUG is implemented: it debugs different |
||
915 | things from other people's assemblers. */ |
||
916 | flag_debug = 1; |
||
917 | break; |
||
918 | |||
919 | case 'f': |
||
920 | flag_no_comments = 1; |
||
921 | break; |
||
922 | |||
923 | case 'I': |
||
924 | { /* Include file directory. */ |
||
925 | char *temp = xstrdup (optarg); |
||
926 | |||
927 | add_include_dir (temp); |
||
928 | break; |
||
929 | } |
||
930 | |||
931 | case 'o': |
||
932 | out_file_name = xstrdup (optarg); |
||
933 | break; |
||
934 | |||
935 | case 'w': |
||
936 | break; |
||
937 | |||
938 | case 'X': |
||
939 | /* -X means treat warnings as errors. */ |
||
940 | break; |
||
941 | |||
942 | case OPTION_REDUCE_MEMORY_OVERHEADS: |
||
943 | /* The only change we make at the moment is to reduce |
||
944 | the size of the hash tables that we use. */ |
||
945 | set_gas_hash_table_size (4051); |
||
946 | break; |
||
947 | |||
948 | case OPTION_HASH_TABLE_SIZE: |
||
949 | { |
||
950 | unsigned long new_size; |
||
951 | |||
952 | new_size = strtoul (optarg, NULL, 0); |
||
953 | if (new_size) |
||
954 | set_gas_hash_table_size (new_size); |
||
955 | else |
||
956 | as_fatal (_("--hash-size needs a numeric argument")); |
||
957 | break; |
||
958 | } |
||
959 | } |
||
960 | } |
||
961 | |||
962 | free (shortopts); |
||
963 | free (longopts); |
||
964 | |||
965 | *pargc = new_argc; |
||
966 | *pargv = new_argv; |
||
967 | |||
968 | #ifdef md_after_parse_args |
||
969 | md_after_parse_args (); |
||
970 | #endif |
||
971 | } |
||
972 | |||
973 | static void |
||
974 | dump_statistics (void) |
||
975 | { |
||
976 | #ifdef HAVE_SBRK |
||
977 | char *lim = (char *) sbrk (0); |
||
978 | #endif |
||
979 | long run_time = get_run_time () - start_time; |
||
980 | |||
981 | fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"), |
||
982 | myname, run_time / 1000000, run_time % 1000000); |
||
983 | #ifdef HAVE_SBRK |
||
984 | fprintf (stderr, _("%s: data size %ld\n"), |
||
985 | myname, (long) (lim - start_sbrk)); |
||
986 | #endif |
||
987 | |||
988 | subsegs_print_statistics (stderr); |
||
989 | write_print_statistics (stderr); |
||
990 | symbol_print_statistics (stderr); |
||
991 | read_print_statistics (stderr); |
||
992 | |||
993 | #ifdef tc_print_statistics |
||
994 | tc_print_statistics (stderr); |
||
995 | #endif |
||
996 | |||
997 | #ifdef obj_print_statistics |
||
998 | obj_print_statistics (stderr); |
||
999 | #endif |
||
1000 | } |
||
1001 | |||
1002 | static void |
||
1003 | close_output_file (void) |
||
1004 | { |
||
1005 | output_file_close (out_file_name); |
||
1006 | if (!keep_it) |
||
1007 | unlink_if_ordinary (out_file_name); |
||
1008 | } |
||
1009 | |||
1010 | /* The interface between the macro code and gas expression handling. */ |
||
1011 | |||
1012 | static size_t |
||
1013 | macro_expr (const char *emsg, size_t idx, sb *in, offsetT *val) |
||
1014 | { |
||
1015 | char *hold; |
||
1016 | expressionS ex; |
||
1017 | |||
1018 | sb_terminate (in); |
||
1019 | |||
1020 | hold = input_line_pointer; |
||
1021 | input_line_pointer = in->ptr + idx; |
||
1022 | expression_and_evaluate (&ex); |
||
1023 | idx = input_line_pointer - in->ptr; |
||
1024 | input_line_pointer = hold; |
||
1025 | |||
1026 | if (ex.X_op != O_constant) |
||
1027 | as_bad ("%s", emsg); |
||
1028 | |||
1029 | *val = ex.X_add_number; |
||
1030 | |||
1031 | return idx; |
||
1032 | } |
||
1033 | |||
1034 | /* Here to attempt 1 pass over each input file. |
||
1035 | We scan argv[*] looking for filenames or exactly "" which is |
||
1036 | shorthand for stdin. Any argv that is NULL is not a file-name. |
||
1037 | We set need_pass_2 TRUE if, after this, we still have unresolved |
||
1038 | expressions of the form (unknown value)+-(unknown value). |
||
1039 | |||
1040 | Note the un*x semantics: there is only 1 logical input file, but it |
||
1041 | may be a catenation of many 'physical' input files. */ |
||
1042 | |||
1043 | static void |
||
1044 | perform_an_assembly_pass (int argc, char ** argv) |
||
1045 | { |
||
1046 | int saw_a_file = 0; |
||
1047 | #ifndef OBJ_MACH_O |
||
1048 | flagword applicable; |
||
1049 | #endif |
||
1050 | |||
1051 | need_pass_2 = 0; |
||
1052 | |||
1053 | #ifndef OBJ_MACH_O |
||
1054 | /* Create the standard sections, and those the assembler uses |
||
1055 | internally. */ |
||
1056 | text_section = subseg_new (TEXT_SECTION_NAME, 0); |
||
1057 | data_section = subseg_new (DATA_SECTION_NAME, 0); |
||
1058 | bss_section = subseg_new (BSS_SECTION_NAME, 0); |
||
1059 | /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed |
||
1060 | to have relocs, otherwise we don't find out in time. */ |
||
1061 | applicable = bfd_applicable_section_flags (stdoutput); |
||
1062 | bfd_set_section_flags (stdoutput, text_section, |
||
1063 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC |
||
1064 | | SEC_CODE | SEC_READONLY)); |
||
1065 | bfd_set_section_flags (stdoutput, data_section, |
||
1066 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC |
||
1067 | | SEC_DATA)); |
||
1068 | bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC); |
||
1069 | seg_info (bss_section)->bss = 1; |
||
1070 | #endif |
||
1071 | subseg_new (BFD_ABS_SECTION_NAME, 0); |
||
1072 | subseg_new (BFD_UND_SECTION_NAME, 0); |
||
1073 | reg_section = subseg_new ("*GAS `reg' section*", 0); |
||
1074 | expr_section = subseg_new ("*GAS `expr' section*", 0); |
||
1075 | |||
1076 | #ifndef OBJ_MACH_O |
||
1077 | subseg_set (text_section, 0); |
||
1078 | #endif |
||
1079 | |||
1080 | /* This may add symbol table entries, which requires having an open BFD, |
||
1081 | and sections already created. */ |
||
1082 | md_begin (); |
||
1083 | |||
1084 | #ifdef USING_CGEN |
||
1085 | gas_cgen_begin (); |
||
1086 | #endif |
||
1087 | #ifdef obj_begin |
||
1088 | obj_begin (); |
||
1089 | #endif |
||
1090 | |||
1091 | /* Skip argv[0]. */ |
||
1092 | argv++; |
||
1093 | argc--; |
||
1094 | |||
1095 | while (argc--) |
||
1096 | { |
||
1097 | if (*argv) |
||
1098 | { /* Is it a file-name argument? */ |
||
1099 | PROGRESS (1); |
||
1100 | saw_a_file++; |
||
1101 | /* argv->"" if stdin desired, else->filename. */ |
||
1102 | read_a_source_file (*argv); |
||
1103 | } |
||
1104 | argv++; /* Completed that argv. */ |
||
1105 | } |
||
1106 | if (!saw_a_file) |
||
1107 | read_a_source_file (""); |
||
1108 | } |
||
1109 | |||
1110 | #ifdef OBJ_ELF |
||
1111 | static void |
||
1112 | create_obj_attrs_section (void) |
||
1113 | { |
||
1114 | segT s; |
||
1115 | char *p; |
||
1116 | offsetT size; |
||
1117 | const char *name; |
||
1118 | |||
1119 | size = bfd_elf_obj_attr_size (stdoutput); |
||
1120 | if (size) |
||
1121 | { |
||
1122 | name = get_elf_backend_data (stdoutput)->obj_attrs_section; |
||
1123 | if (!name) |
||
1124 | name = ".gnu.attributes"; |
||
1125 | s = subseg_new (name, 0); |
||
1126 | elf_section_type (s) |
||
1127 | = get_elf_backend_data (stdoutput)->obj_attrs_section_type; |
||
1128 | bfd_set_section_flags (stdoutput, s, SEC_READONLY | SEC_DATA); |
||
1129 | frag_now_fix (); |
||
1130 | p = frag_more (size); |
||
1131 | bfd_elf_set_obj_attr_contents (stdoutput, (bfd_byte *)p, size); |
||
1132 | } |
||
1133 | } |
||
1134 | #endif |
||
1135 | |||
1136 | |||
1137 | int |
||
1138 | main (int argc, char ** argv) |
||
1139 | { |
||
1140 | char ** argv_orig = argv; |
||
1141 | |||
1142 | int macro_strip_at; |
||
1143 | |||
1144 | start_time = get_run_time (); |
||
1145 | #ifdef HAVE_SBRK |
||
1146 | start_sbrk = (char *) sbrk (0); |
||
1147 | #endif |
||
1148 | |||
1149 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) |
||
1150 | setlocale (LC_MESSAGES, ""); |
||
1151 | #endif |
||
1152 | #if defined (HAVE_SETLOCALE) |
||
1153 | setlocale (LC_CTYPE, ""); |
||
1154 | #endif |
||
1155 | bindtextdomain (PACKAGE, LOCALEDIR); |
||
1156 | textdomain (PACKAGE); |
||
1157 | |||
1158 | if (debug_memory) |
||
1159 | chunksize = 64; |
||
1160 | |||
1161 | #ifdef HOST_SPECIAL_INIT |
||
1162 | HOST_SPECIAL_INIT (argc, argv); |
||
1163 | #endif |
||
1164 | |||
1165 | myname = argv[0]; |
||
1166 | xmalloc_set_program_name (myname); |
||
1167 | |||
1168 | expandargv (&argc, &argv); |
||
1169 | |||
1170 | START_PROGRESS (myname, 0); |
||
1171 | |||
1172 | #ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME |
||
1173 | #define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out" |
||
1174 | #endif |
||
1175 | |||
1176 | out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME; |
||
1177 | |||
1178 | hex_init (); |
||
1179 | bfd_init (); |
||
1180 | bfd_set_error_program_name (myname); |
||
1181 | |||
1182 | #ifdef USE_EMULATIONS |
||
1183 | select_emulation_mode (argc, argv); |
||
1184 | #endif |
||
1185 | |||
1186 | PROGRESS (1); |
||
1187 | /* Call parse_args before any of the init/begin functions |
||
1188 | so that switches like --hash-size can be honored. */ |
||
1189 | parse_args (&argc, &argv); |
||
1190 | symbol_begin (); |
||
1191 | frag_init (); |
||
1192 | subsegs_begin (); |
||
1193 | read_begin (); |
||
1194 | input_scrub_begin (); |
||
1195 | expr_begin (); |
||
1196 | |||
1197 | /* It has to be called after dump_statistics (). */ |
||
1198 | xatexit (close_output_file); |
||
1199 | |||
1200 | if (flag_print_statistics) |
||
1201 | xatexit (dump_statistics); |
||
1202 | |||
1203 | macro_strip_at = 0; |
||
1204 | #ifdef TC_I960 |
||
1205 | macro_strip_at = flag_mri; |
||
1206 | #endif |
||
1207 | |||
1208 | macro_init (flag_macro_alternate, flag_mri, macro_strip_at, macro_expr); |
||
1209 | |||
1210 | PROGRESS (1); |
||
1211 | |||
1212 | output_file_create (out_file_name); |
||
1213 | gas_assert (stdoutput != 0); |
||
1214 | |||
1215 | dot_symbol_init (); |
||
1216 | |||
1217 | #ifdef tc_init_after_args |
||
1218 | tc_init_after_args (); |
||
1219 | #endif |
||
1220 | |||
1221 | itbl_init (); |
||
1222 | |||
1223 | dwarf2_init (); |
||
1224 | |||
1225 | local_symbol_make (".gasversion.", absolute_section, |
||
1226 | BFD_VERSION / 10000UL, &predefined_address_frag); |
||
1227 | |||
1228 | /* Now that we have fully initialized, and have created the output |
||
1229 | file, define any symbols requested by --defsym command line |
||
1230 | arguments. */ |
||
1231 | while (defsyms != NULL) |
||
1232 | { |
||
1233 | symbolS *sym; |
||
1234 | struct defsym_list *next; |
||
1235 | |||
1236 | sym = symbol_new (defsyms->name, absolute_section, defsyms->value, |
||
1237 | &zero_address_frag); |
||
1238 | /* Make symbols defined on the command line volatile, so that they |
||
1239 | can be redefined inside a source file. This makes this assembler's |
||
1240 | behaviour compatible with earlier versions, but it may not be |
||
1241 | completely intuitive. */ |
||
1242 | S_SET_VOLATILE (sym); |
||
1243 | symbol_table_insert (sym); |
||
1244 | next = defsyms->next; |
||
1245 | free (defsyms); |
||
1246 | defsyms = next; |
||
1247 | } |
||
1248 | |||
1249 | PROGRESS (1); |
||
1250 | |||
1251 | /* Assemble it. */ |
||
1252 | perform_an_assembly_pass (argc, argv); |
||
1253 | |||
1254 | cond_finish_check (-1); |
||
1255 | |||
1256 | #ifdef md_end |
||
1257 | md_end (); |
||
1258 | #endif |
||
1259 | |||
1260 | #ifdef OBJ_ELF |
||
1261 | if (IS_ELF) |
||
1262 | create_obj_attrs_section (); |
||
1263 | #endif |
||
1264 | |||
1265 | #if defined OBJ_ELF || defined OBJ_MAYBE_ELF |
||
1266 | if ((flag_execstack || flag_noexecstack) |
||
1267 | && OUTPUT_FLAVOR == bfd_target_elf_flavour) |
||
1268 | { |
||
1269 | segT gnustack; |
||
1270 | |||
1271 | gnustack = subseg_new (".note.GNU-stack", 0); |
||
1272 | bfd_set_section_flags (stdoutput, gnustack, |
||
1273 | SEC_READONLY | (flag_execstack ? SEC_CODE : 0)); |
||
1274 | |||
1275 | } |
||
1276 | #endif |
||
1277 | |||
1278 | /* If we've been collecting dwarf2 .debug_line info, either for |
||
1279 | assembly debugging or on behalf of the compiler, emit it now. */ |
||
1280 | dwarf2_finish (); |
||
1281 | |||
1282 | /* If we constructed dwarf2 .eh_frame info, either via .cfi |
||
1283 | directives from the user or by the backend, emit it now. */ |
||
1284 | cfi_finish (); |
||
1285 | |||
1286 | if (seen_at_least_1_file () |
||
1287 | && (flag_always_generate_output || had_errors () == 0)) |
||
1288 | keep_it = 1; |
||
1289 | else |
||
1290 | keep_it = 0; |
||
1291 | |||
1292 | /* This used to be done at the start of write_object_file in |
||
1293 | write.c, but that caused problems when doing listings when |
||
1294 | keep_it was zero. This could probably be moved above md_end, but |
||
1295 | I didn't want to risk the change. */ |
||
1296 | subsegs_finish (); |
||
1297 | |||
1298 | if (keep_it) |
||
1299 | write_object_file (); |
||
1300 | |||
1301 | fflush (stderr); |
||
1302 | |||
1303 | #ifndef NO_LISTING |
||
1304 | listing_print (listing_filename, argv_orig); |
||
1305 | #endif |
||
1306 | |||
1307 | if (flag_fatal_warnings && had_warnings () > 0 && had_errors () == 0) |
||
1308 | as_bad (_("%d warnings, treating warnings as errors"), had_warnings ()); |
||
1309 | |||
1310 | if (had_errors () > 0 && ! flag_always_generate_output) |
||
1311 | keep_it = 0; |
||
1312 | |||
1313 | input_scrub_end (); |
||
1314 | |||
1315 | END_PROGRESS (myname); |
||
1316 | |||
1317 | /* Use xexit instead of return, because under VMS environments they |
||
1318 | may not place the same interpretation on the value given. */ |
||
1319 | if (had_errors () > 0) |
||
1320 | xexit (EXIT_FAILURE); |
||
1321 | |||
1322 | /* Only generate dependency file if assembler was successful. */ |
||
1323 | print_dependencies (); |
||
1324 | |||
1325 | xexit (EXIT_SUCCESS); |
||
1326 | }>>>> |