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Rev | Author | Line No. | Line |
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5222 | serge | 1 | /* coff object file format |
6324 | serge | 2 | Copyright (C) 1989-2015 Free Software Foundation, Inc. |
5222 | serge | 3 | |
4 | This file is part of GAS. |
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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, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public 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 | #define OBJ_HEADER "obj-coff.h" |
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22 | |||
23 | #include "as.h" |
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24 | #include "safe-ctype.h" |
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25 | #include "subsegs.h" |
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26 | #include "struc-symbol.h" |
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27 | |||
28 | #ifdef TE_PE |
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29 | #include "coff/pe.h" |
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30 | #endif |
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31 | |||
32 | #ifdef OBJ_XCOFF |
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33 | #include "coff/xcoff.h" |
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34 | #endif |
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35 | |||
36 | #define streq(a,b) (strcmp ((a), (b)) == 0) |
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37 | #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0) |
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38 | |||
39 | /* I think this is probably always correct. */ |
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40 | #ifndef KEEP_RELOC_INFO |
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41 | #define KEEP_RELOC_INFO |
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42 | #endif |
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43 | |||
44 | /* obj_coff_section will use this macro to set a new section's |
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45 | attributes when a directive has no valid flags or the "w" flag is |
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46 | used. This default should be appropriate for most. */ |
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47 | #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES |
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48 | #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA) |
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49 | #endif |
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50 | |||
51 | /* This is used to hold the symbol built by a sequence of pseudo-ops |
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52 | from .def and .endef. */ |
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53 | static symbolS *def_symbol_in_progress; |
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54 | #ifdef TE_PE |
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55 | /* PE weak alternate symbols begin with this string. */ |
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56 | static const char weak_altprefix[] = ".weak."; |
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57 | #endif /* TE_PE */ |
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58 | |||
59 | #include "obj-coff-seh.c" |
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60 | |||
61 | typedef struct |
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62 | { |
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63 | unsigned long chunk_size; |
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64 | unsigned long element_size; |
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65 | unsigned long size; |
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66 | char *data; |
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67 | unsigned long pointer; |
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68 | } |
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69 | stack; |
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70 | |||
71 | |||
72 | /* Stack stuff. */ |
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73 | |||
74 | static stack * |
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75 | stack_init (unsigned long chunk_size, |
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76 | unsigned long element_size) |
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77 | { |
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78 | stack *st; |
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79 | |||
80 | st = malloc (sizeof (* st)); |
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81 | if (!st) |
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82 | return NULL; |
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83 | st->data = malloc (chunk_size); |
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84 | if (!st->data) |
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85 | { |
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86 | free (st); |
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87 | return NULL; |
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88 | } |
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89 | st->pointer = 0; |
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90 | st->size = chunk_size; |
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91 | st->chunk_size = chunk_size; |
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92 | st->element_size = element_size; |
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93 | return st; |
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94 | } |
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95 | |||
96 | static char * |
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97 | stack_push (stack *st, char *element) |
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98 | { |
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99 | if (st->pointer + st->element_size >= st->size) |
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100 | { |
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101 | st->size += st->chunk_size; |
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102 | if ((st->data = xrealloc (st->data, st->size)) == NULL) |
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103 | return NULL; |
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104 | } |
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105 | memcpy (st->data + st->pointer, element, st->element_size); |
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106 | st->pointer += st->element_size; |
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107 | return st->data + st->pointer; |
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108 | } |
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109 | |||
110 | static char * |
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111 | stack_pop (stack *st) |
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112 | { |
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113 | if (st->pointer < st->element_size) |
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114 | { |
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115 | st->pointer = 0; |
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116 | return NULL; |
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117 | } |
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118 | st->pointer -= st->element_size; |
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119 | return st->data + st->pointer; |
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120 | } |
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121 | |||
122 | /* Maintain a list of the tagnames of the structures. */ |
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123 | |||
124 | static struct hash_control *tag_hash; |
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125 | |||
126 | static void |
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127 | tag_init (void) |
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128 | { |
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129 | tag_hash = hash_new (); |
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130 | } |
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131 | |||
132 | static void |
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133 | tag_insert (const char *name, symbolS *symbolP) |
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134 | { |
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135 | const char *error_string; |
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136 | |||
137 | if ((error_string = hash_jam (tag_hash, name, (char *) symbolP))) |
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138 | as_fatal (_("Inserting \"%s\" into structure table failed: %s"), |
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139 | name, error_string); |
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140 | } |
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141 | |||
142 | static symbolS * |
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143 | tag_find (char *name) |
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144 | { |
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145 | return (symbolS *) hash_find (tag_hash, name); |
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146 | } |
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147 | |||
148 | static symbolS * |
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149 | tag_find_or_make (char *name) |
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150 | { |
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151 | symbolS *symbolP; |
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152 | |||
153 | if ((symbolP = tag_find (name)) == NULL) |
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154 | { |
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155 | symbolP = symbol_new (name, undefined_section, |
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156 | 0, &zero_address_frag); |
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157 | |||
158 | tag_insert (S_GET_NAME (symbolP), symbolP); |
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159 | symbol_table_insert (symbolP); |
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160 | } |
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161 | |||
162 | return symbolP; |
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163 | } |
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164 | |||
165 | /* We accept the .bss directive to set the section for backward |
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166 | compatibility with earlier versions of gas. */ |
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167 | |||
168 | static void |
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169 | obj_coff_bss (int ignore ATTRIBUTE_UNUSED) |
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170 | { |
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171 | if (*input_line_pointer == '\n') |
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172 | subseg_new (".bss", get_absolute_expression ()); |
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173 | else |
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174 | s_lcomm (0); |
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175 | } |
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176 | |||
177 | #ifdef TE_PE |
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178 | /* Called from read.c:s_comm after we've parsed .comm symbol, size. |
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179 | Parse a possible alignment value. */ |
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180 | |||
181 | static symbolS * |
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182 | obj_coff_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) |
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183 | { |
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184 | addressT align = 0; |
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185 | |||
186 | if (*input_line_pointer == ',') |
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187 | { |
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188 | align = parse_align (0); |
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189 | if (align == (addressT) -1) |
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190 | return NULL; |
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191 | } |
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192 | |||
193 | S_SET_VALUE (symbolP, size); |
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194 | S_SET_EXTERNAL (symbolP); |
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195 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
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196 | |||
197 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
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198 | |||
199 | /* There is no S_SET_ALIGN (symbolP, align) in COFF/PE. |
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200 | Instead we must add a note to the .drectve section. */ |
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201 | if (align) |
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202 | { |
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203 | segT current_seg = now_seg; |
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204 | subsegT current_subseg = now_subseg; |
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205 | flagword oldflags; |
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206 | asection *sec; |
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207 | size_t pfxlen, numlen; |
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208 | char *frag; |
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209 | char numbuff[20]; |
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210 | |||
211 | sec = subseg_new (".drectve", 0); |
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212 | oldflags = bfd_get_section_flags (stdoutput, sec); |
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213 | if (oldflags == SEC_NO_FLAGS) |
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214 | { |
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215 | if (!bfd_set_section_flags (stdoutput, sec, |
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216 | TC_COFF_SECTION_DEFAULT_ATTRIBUTES)) |
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217 | as_warn (_("error setting flags for \"%s\": %s"), |
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218 | bfd_section_name (stdoutput, sec), |
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219 | bfd_errmsg (bfd_get_error ())); |
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220 | } |
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221 | |||
222 | /* Emit a string. Note no NUL-termination. */ |
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223 | pfxlen = strlen (" -aligncomm:") + 2 + strlen (S_GET_NAME (symbolP)) + 1; |
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224 | numlen = snprintf (numbuff, sizeof (numbuff), "%d", (int) align); |
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225 | frag = frag_more (pfxlen + numlen); |
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226 | (void) sprintf (frag, " -aligncomm:\"%s\",", S_GET_NAME (symbolP)); |
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227 | memcpy (frag + pfxlen, numbuff, numlen); |
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228 | /* Restore original subseg. */ |
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229 | subseg_set (current_seg, current_subseg); |
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230 | } |
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231 | |||
232 | return symbolP; |
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233 | } |
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234 | |||
235 | static void |
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236 | obj_coff_comm (int ignore ATTRIBUTE_UNUSED) |
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237 | { |
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238 | s_comm_internal (ignore, obj_coff_common_parse); |
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239 | } |
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240 | #endif /* TE_PE */ |
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241 | |||
242 | #define GET_FILENAME_STRING(X) \ |
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243 | ((char *) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1]) |
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244 | |||
245 | /* @@ Ick. */ |
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246 | static segT |
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247 | fetch_coff_debug_section (void) |
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248 | { |
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249 | static segT debug_section; |
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250 | |||
251 | if (!debug_section) |
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252 | { |
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253 | const asymbol *s; |
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254 | |||
255 | s = bfd_make_debug_symbol (stdoutput, NULL, 0); |
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256 | gas_assert (s != 0); |
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257 | debug_section = s->section; |
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258 | } |
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259 | return debug_section; |
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260 | } |
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261 | |||
262 | void |
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263 | SA_SET_SYM_ENDNDX (symbolS *sym, symbolS *val) |
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264 | { |
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265 | combined_entry_type *entry, *p; |
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266 | |||
267 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
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268 | p = coffsymbol (symbol_get_bfdsym (val))->native; |
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269 | entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p; |
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270 | entry->fix_end = 1; |
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271 | } |
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272 | |||
273 | static void |
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274 | SA_SET_SYM_TAGNDX (symbolS *sym, symbolS *val) |
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275 | { |
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276 | combined_entry_type *entry, *p; |
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277 | |||
278 | entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1]; |
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279 | p = coffsymbol (symbol_get_bfdsym (val))->native; |
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280 | entry->u.auxent.x_sym.x_tagndx.p = p; |
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281 | entry->fix_tag = 1; |
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282 | } |
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283 | |||
284 | static int |
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285 | S_GET_DATA_TYPE (symbolS *sym) |
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286 | { |
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287 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type; |
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288 | } |
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289 | |||
290 | int |
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291 | S_SET_DATA_TYPE (symbolS *sym, int val) |
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292 | { |
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293 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val; |
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294 | return val; |
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295 | } |
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296 | |||
297 | int |
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298 | S_GET_STORAGE_CLASS (symbolS *sym) |
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299 | { |
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300 | return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass; |
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301 | } |
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302 | |||
303 | int |
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304 | S_SET_STORAGE_CLASS (symbolS *sym, int val) |
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305 | { |
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306 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val; |
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307 | return val; |
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308 | } |
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309 | |||
310 | /* Merge a debug symbol containing debug information into a normal symbol. */ |
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311 | |||
312 | static void |
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313 | c_symbol_merge (symbolS *debug, symbolS *normal) |
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314 | { |
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315 | S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug)); |
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316 | S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug)); |
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317 | |||
318 | if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal)) |
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319 | /* Take the most we have. */ |
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320 | S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug)); |
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321 | |||
322 | if (S_GET_NUMBER_AUXILIARY (debug) > 0) |
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323 | /* Move all the auxiliary information. */ |
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324 | memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug), |
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325 | (S_GET_NUMBER_AUXILIARY (debug) |
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326 | * sizeof (*SYM_AUXINFO (debug)))); |
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327 | |||
328 | /* Move the debug flags. */ |
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329 | SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug)); |
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330 | } |
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331 | |||
332 | void |
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333 | c_dot_file_symbol (const char *filename, int appfile ATTRIBUTE_UNUSED) |
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334 | { |
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335 | symbolS *symbolP; |
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336 | |||
337 | /* BFD converts filename to a .file symbol with an aux entry. It |
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338 | also handles chaining. */ |
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339 | symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag); |
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340 | |||
341 | S_SET_STORAGE_CLASS (symbolP, C_FILE); |
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342 | S_SET_NUMBER_AUXILIARY (symbolP, 1); |
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343 | |||
344 | symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING; |
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345 | |||
346 | #ifndef NO_LISTING |
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347 | { |
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348 | extern int listing; |
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349 | |||
350 | if (listing) |
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351 | listing_source_file (filename); |
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352 | } |
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353 | #endif |
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354 | |||
355 | /* Make sure that the symbol is first on the symbol chain. */ |
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356 | if (symbol_rootP != symbolP) |
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357 | { |
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358 | symbol_remove (symbolP, &symbol_rootP, &symbol_lastP); |
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359 | symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); |
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360 | } |
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361 | } |
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362 | |||
363 | /* Line number handling. */ |
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364 | |||
365 | struct line_no |
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366 | { |
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367 | struct line_no *next; |
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368 | fragS *frag; |
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369 | alent l; |
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370 | }; |
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371 | |||
372 | int coff_line_base; |
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373 | |||
374 | /* Symbol of last function, which we should hang line#s off of. */ |
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375 | static symbolS *line_fsym; |
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376 | |||
377 | #define in_function() (line_fsym != 0) |
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378 | #define clear_function() (line_fsym = 0) |
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379 | #define set_function(F) (line_fsym = (F), coff_add_linesym (F)) |
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380 | |||
381 | |||
382 | void |
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383 | coff_obj_symbol_new_hook (symbolS *symbolP) |
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384 | { |
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385 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); |
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386 | char * s = xmalloc (sz); |
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387 | |||
388 | memset (s, 0, sz); |
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389 | coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s; |
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6324 | serge | 390 | coffsymbol (symbol_get_bfdsym (symbolP))->native->is_sym = TRUE; |
5222 | serge | 391 | |
392 | S_SET_DATA_TYPE (symbolP, T_NULL); |
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393 | S_SET_STORAGE_CLASS (symbolP, 0); |
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394 | S_SET_NUMBER_AUXILIARY (symbolP, 0); |
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395 | |||
396 | if (S_IS_STRING (symbolP)) |
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397 | SF_SET_STRING (symbolP); |
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398 | |||
399 | if (S_IS_LOCAL (symbolP)) |
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400 | SF_SET_LOCAL (symbolP); |
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401 | } |
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402 | |||
403 | void |
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404 | coff_obj_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) |
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405 | { |
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406 | long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type); |
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407 | combined_entry_type * s = xmalloc (sz); |
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408 | |||
409 | memcpy (s, coffsymbol (symbol_get_bfdsym (orgsymP))->native, sz); |
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410 | coffsymbol (symbol_get_bfdsym (newsymP))->native = s; |
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411 | |||
412 | SF_SET (newsymP, SF_GET (orgsymP)); |
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413 | } |
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414 | |||
415 | |||
416 | /* Handle .ln directives. */ |
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417 | |||
418 | static symbolS *current_lineno_sym; |
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419 | static struct line_no *line_nos; |
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420 | /* FIXME: Blindly assume all .ln directives will be in the .text section. */ |
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421 | int coff_n_line_nos; |
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422 | |||
423 | static void |
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424 | add_lineno (fragS * frag, addressT offset, int num) |
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425 | { |
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426 | struct line_no * new_line = xmalloc (sizeof (* new_line)); |
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427 | |||
428 | if (!current_lineno_sym) |
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429 | abort (); |
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430 | |||
431 | #ifndef OBJ_XCOFF |
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432 | /* The native aix assembler accepts negative line number. */ |
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433 | |||
434 | if (num <= 0) |
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435 | { |
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436 | /* Zero is used as an end marker in the file. */ |
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437 | as_warn (_("Line numbers must be positive integers\n")); |
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438 | num = 1; |
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439 | } |
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440 | #endif /* OBJ_XCOFF */ |
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441 | new_line->next = line_nos; |
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442 | new_line->frag = frag; |
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443 | new_line->l.line_number = num; |
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444 | new_line->l.u.offset = offset; |
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445 | line_nos = new_line; |
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446 | coff_n_line_nos++; |
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447 | } |
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448 | |||
449 | void |
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450 | coff_add_linesym (symbolS *sym) |
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451 | { |
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452 | if (line_nos) |
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453 | { |
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454 | coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno = |
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455 | (alent *) line_nos; |
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456 | coff_n_line_nos++; |
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457 | line_nos = 0; |
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458 | } |
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459 | current_lineno_sym = sym; |
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460 | } |
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461 | |||
462 | static void |
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463 | obj_coff_ln (int appline) |
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464 | { |
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465 | int l; |
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466 | |||
467 | if (! appline && def_symbol_in_progress != NULL) |
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468 | { |
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469 | as_warn (_(".ln pseudo-op inside .def/.endef: ignored.")); |
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470 | demand_empty_rest_of_line (); |
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471 | return; |
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472 | } |
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473 | |||
474 | l = get_absolute_expression (); |
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475 | |||
476 | /* If there is no lineno symbol, treat a .ln |
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477 | directive as if it were a .appline directive. */ |
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478 | if (appline || current_lineno_sym == NULL) |
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479 | new_logical_line ((char *) NULL, l - 1); |
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480 | else |
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481 | add_lineno (frag_now, frag_now_fix (), l); |
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482 | |||
483 | #ifndef NO_LISTING |
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484 | { |
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485 | extern int listing; |
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486 | |||
487 | if (listing) |
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488 | { |
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489 | if (! appline) |
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490 | l += coff_line_base - 1; |
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491 | listing_source_line (l); |
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492 | } |
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493 | } |
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494 | #endif |
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495 | |||
496 | demand_empty_rest_of_line (); |
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497 | } |
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498 | |||
499 | /* .loc is essentially the same as .ln; parse it for assembler |
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500 | compatibility. */ |
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501 | |||
502 | static void |
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503 | obj_coff_loc (int ignore ATTRIBUTE_UNUSED) |
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504 | { |
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505 | int lineno; |
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506 | |||
507 | /* FIXME: Why do we need this check? We need it for ECOFF, but why |
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508 | do we need it for COFF? */ |
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509 | if (now_seg != text_section) |
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510 | { |
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511 | as_warn (_(".loc outside of .text")); |
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512 | demand_empty_rest_of_line (); |
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513 | return; |
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514 | } |
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515 | |||
516 | if (def_symbol_in_progress != NULL) |
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517 | { |
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518 | as_warn (_(".loc pseudo-op inside .def/.endef: ignored.")); |
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519 | demand_empty_rest_of_line (); |
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520 | return; |
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521 | } |
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522 | |||
523 | /* Skip the file number. */ |
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524 | SKIP_WHITESPACE (); |
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525 | get_absolute_expression (); |
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526 | SKIP_WHITESPACE (); |
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527 | |||
528 | lineno = get_absolute_expression (); |
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529 | |||
530 | #ifndef NO_LISTING |
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531 | { |
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532 | extern int listing; |
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533 | |||
534 | if (listing) |
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535 | { |
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536 | lineno += coff_line_base - 1; |
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537 | listing_source_line (lineno); |
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538 | } |
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539 | } |
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540 | #endif |
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541 | |||
542 | demand_empty_rest_of_line (); |
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543 | |||
544 | add_lineno (frag_now, frag_now_fix (), lineno); |
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545 | } |
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546 | |||
547 | /* Handle the .ident pseudo-op. */ |
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548 | |||
549 | static void |
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550 | obj_coff_ident (int ignore ATTRIBUTE_UNUSED) |
||
551 | { |
||
552 | segT current_seg = now_seg; |
||
553 | subsegT current_subseg = now_subseg; |
||
554 | |||
555 | #ifdef TE_PE |
||
556 | { |
||
557 | segT sec; |
||
558 | |||
559 | /* We could put it in .comment, but that creates an extra section |
||
560 | that shouldn't be loaded into memory, which requires linker |
||
561 | changes... For now, until proven otherwise, use .rdata. */ |
||
562 | sec = subseg_new (".rdata$zzz", 0); |
||
563 | bfd_set_section_flags (stdoutput, sec, |
||
564 | ((SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA) |
||
565 | & bfd_applicable_section_flags (stdoutput))); |
||
566 | } |
||
567 | #else |
||
568 | subseg_new (".comment", 0); |
||
569 | #endif |
||
570 | |||
571 | stringer (8 + 1); |
||
572 | subseg_set (current_seg, current_subseg); |
||
573 | } |
||
574 | |||
575 | /* Handle .def directives. |
||
576 | |||
577 | One might ask : why can't we symbol_new if the symbol does not |
||
578 | already exist and fill it with debug information. Because of |
||
579 | the C_EFCN special symbol. It would clobber the value of the |
||
580 | function symbol before we have a chance to notice that it is |
||
581 | a C_EFCN. And a second reason is that the code is more clear this |
||
582 | way. (at least I think it is :-). */ |
||
583 | |||
584 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') |
||
585 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ |
||
586 | *input_line_pointer == '\t') \ |
||
587 | input_line_pointer++; |
||
588 | |||
589 | static void |
||
590 | obj_coff_def (int what ATTRIBUTE_UNUSED) |
||
591 | { |
||
592 | char name_end; /* Char after the end of name. */ |
||
593 | char *symbol_name; /* Name of the debug symbol. */ |
||
594 | char *symbol_name_copy; /* Temporary copy of the name. */ |
||
595 | unsigned int symbol_name_length; |
||
596 | |||
597 | if (def_symbol_in_progress != NULL) |
||
598 | { |
||
599 | as_warn (_(".def pseudo-op used inside of .def/.endef: ignored.")); |
||
600 | demand_empty_rest_of_line (); |
||
601 | return; |
||
602 | } |
||
603 | |||
604 | SKIP_WHITESPACES (); |
||
605 | |||
6324 | serge | 606 | name_end = get_symbol_name (&symbol_name); |
5222 | serge | 607 | symbol_name_length = strlen (symbol_name); |
608 | symbol_name_copy = xmalloc (symbol_name_length + 1); |
||
609 | strcpy (symbol_name_copy, symbol_name); |
||
610 | #ifdef tc_canonicalize_symbol_name |
||
611 | symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy); |
||
612 | #endif |
||
613 | |||
614 | /* Initialize the new symbol. */ |
||
615 | def_symbol_in_progress = symbol_make (symbol_name_copy); |
||
616 | symbol_set_frag (def_symbol_in_progress, &zero_address_frag); |
||
617 | S_SET_VALUE (def_symbol_in_progress, 0); |
||
618 | |||
619 | if (S_IS_STRING (def_symbol_in_progress)) |
||
620 | SF_SET_STRING (def_symbol_in_progress); |
||
621 | |||
6324 | serge | 622 | (void) restore_line_pointer (name_end); |
5222 | serge | 623 | |
624 | demand_empty_rest_of_line (); |
||
625 | } |
||
626 | |||
627 | static void |
||
628 | obj_coff_endef (int ignore ATTRIBUTE_UNUSED) |
||
629 | { |
||
630 | symbolS *symbolP = NULL; |
||
631 | |||
632 | if (def_symbol_in_progress == NULL) |
||
633 | { |
||
634 | as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored.")); |
||
635 | demand_empty_rest_of_line (); |
||
636 | return; |
||
637 | } |
||
638 | |||
639 | /* Set the section number according to storage class. */ |
||
640 | switch (S_GET_STORAGE_CLASS (def_symbol_in_progress)) |
||
641 | { |
||
642 | case C_STRTAG: |
||
643 | case C_ENTAG: |
||
644 | case C_UNTAG: |
||
645 | SF_SET_TAG (def_symbol_in_progress); |
||
646 | /* Fall through. */ |
||
647 | case C_FILE: |
||
648 | case C_TPDEF: |
||
649 | SF_SET_DEBUG (def_symbol_in_progress); |
||
650 | S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ()); |
||
651 | break; |
||
652 | |||
653 | case C_EFCN: |
||
654 | SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */ |
||
655 | /* Fall through. */ |
||
656 | case C_BLOCK: |
||
657 | SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing. */ |
||
658 | /* Fall through. */ |
||
659 | case C_FCN: |
||
660 | { |
||
661 | const char *name; |
||
662 | |||
663 | S_SET_SEGMENT (def_symbol_in_progress, text_section); |
||
664 | |||
665 | name = S_GET_NAME (def_symbol_in_progress); |
||
666 | if (name[0] == '.' && name[2] == 'f' && name[3] == '\0') |
||
667 | { |
||
668 | switch (name[1]) |
||
669 | { |
||
670 | case 'b': |
||
671 | /* .bf */ |
||
672 | if (! in_function ()) |
||
673 | as_warn (_("`%s' symbol without preceding function"), name); |
||
674 | /* Will need relocating. */ |
||
675 | SF_SET_PROCESS (def_symbol_in_progress); |
||
676 | clear_function (); |
||
677 | break; |
||
678 | #ifdef TE_PE |
||
679 | case 'e': |
||
680 | /* .ef */ |
||
681 | /* The MS compilers output the actual endline, not the |
||
682 | function-relative one... we want to match without |
||
683 | changing the assembler input. */ |
||
684 | SA_SET_SYM_LNNO (def_symbol_in_progress, |
||
685 | (SA_GET_SYM_LNNO (def_symbol_in_progress) |
||
686 | + coff_line_base)); |
||
687 | break; |
||
688 | #endif |
||
689 | } |
||
690 | } |
||
691 | } |
||
692 | break; |
||
693 | |||
694 | #ifdef C_AUTOARG |
||
695 | case C_AUTOARG: |
||
696 | #endif /* C_AUTOARG */ |
||
697 | case C_AUTO: |
||
698 | case C_REG: |
||
699 | case C_ARG: |
||
700 | case C_REGPARM: |
||
701 | case C_FIELD: |
||
702 | |||
703 | /* According to the COFF documentation: |
||
704 | |||
705 | http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html |
||
706 | |||
707 | A special section number (-2) marks symbolic debugging symbols, |
||
708 | including structure/union/enumeration tag names, typedefs, and |
||
709 | the name of the file. A section number of -1 indicates that the |
||
710 | symbol has a value but is not relocatable. Examples of |
||
711 | absolute-valued symbols include automatic and register variables, |
||
712 | function arguments, and .eos symbols. |
||
713 | |||
714 | But from Ian Lance Taylor: |
||
715 | |||
716 | http://sources.redhat.com/ml/binutils/2000-08/msg00202.html |
||
717 | |||
718 | the actual tools all marked them as section -1. So the GNU COFF |
||
719 | assembler follows historical COFF assemblers. |
||
720 | |||
721 | However, it causes problems for djgpp |
||
722 | |||
723 | http://sources.redhat.com/ml/binutils/2000-08/msg00210.html |
||
724 | |||
725 | By defining STRICTCOFF, a COFF port can make the assembler to |
||
726 | follow the documented behavior. */ |
||
727 | #ifdef STRICTCOFF |
||
728 | case C_MOS: |
||
729 | case C_MOE: |
||
730 | case C_MOU: |
||
731 | case C_EOS: |
||
732 | #endif |
||
733 | SF_SET_DEBUG (def_symbol_in_progress); |
||
734 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
||
735 | break; |
||
736 | |||
737 | #ifndef STRICTCOFF |
||
738 | case C_MOS: |
||
739 | case C_MOE: |
||
740 | case C_MOU: |
||
741 | case C_EOS: |
||
742 | S_SET_SEGMENT (def_symbol_in_progress, absolute_section); |
||
743 | break; |
||
744 | #endif |
||
745 | |||
746 | case C_EXT: |
||
747 | case C_WEAKEXT: |
||
748 | #ifdef TE_PE |
||
749 | case C_NT_WEAK: |
||
750 | #endif |
||
751 | case C_STAT: |
||
752 | case C_LABEL: |
||
753 | /* Valid but set somewhere else (s_comm, s_lcomm, colon). */ |
||
754 | break; |
||
755 | |||
756 | default: |
||
757 | case C_USTATIC: |
||
758 | case C_EXTDEF: |
||
759 | case C_ULABEL: |
||
760 | as_warn (_("unexpected storage class %d"), |
||
761 | S_GET_STORAGE_CLASS (def_symbol_in_progress)); |
||
762 | break; |
||
763 | } |
||
764 | |||
765 | /* Now that we have built a debug symbol, try to find if we should |
||
766 | merge with an existing symbol or not. If a symbol is C_EFCN or |
||
767 | absolute_section or untagged SEG_DEBUG it never merges. We also |
||
768 | don't merge labels, which are in a different namespace, nor |
||
769 | symbols which have not yet been defined since they are typically |
||
770 | unique, nor do we merge tags with non-tags. */ |
||
771 | |||
772 | /* Two cases for functions. Either debug followed by definition or |
||
773 | definition followed by debug. For definition first, we will |
||
774 | merge the debug symbol into the definition. For debug first, the |
||
775 | lineno entry MUST point to the definition function or else it |
||
776 | will point off into space when obj_crawl_symbol_chain() merges |
||
777 | the debug symbol into the real symbol. Therefor, let's presume |
||
778 | the debug symbol is a real function reference. */ |
||
779 | |||
780 | /* FIXME-SOON If for some reason the definition label/symbol is |
||
781 | never seen, this will probably leave an undefined symbol at link |
||
782 | time. */ |
||
783 | |||
784 | if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN |
||
785 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL |
||
786 | || (streq (bfd_get_section_name (stdoutput, |
||
787 | S_GET_SEGMENT (def_symbol_in_progress)), |
||
788 | "*DEBUG*") |
||
789 | && !SF_GET_TAG (def_symbol_in_progress)) |
||
790 | || S_GET_SEGMENT (def_symbol_in_progress) == absolute_section |
||
791 | || ! symbol_constant_p (def_symbol_in_progress) |
||
792 | || (symbolP = symbol_find (S_GET_NAME (def_symbol_in_progress))) == NULL |
||
793 | || SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)) |
||
794 | { |
||
795 | /* If it already is at the end of the symbol list, do nothing */ |
||
796 | if (def_symbol_in_progress != symbol_lastP) |
||
797 | { |
||
798 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
||
799 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, |
||
800 | &symbol_lastP); |
||
801 | } |
||
802 | } |
||
803 | else |
||
804 | { |
||
805 | /* This symbol already exists, merge the newly created symbol |
||
806 | into the old one. This is not mandatory. The linker can |
||
807 | handle duplicate symbols correctly. But I guess that it save |
||
808 | a *lot* of space if the assembly file defines a lot of |
||
809 | symbols. [loic] */ |
||
810 | |||
811 | /* The debug entry (def_symbol_in_progress) is merged into the |
||
812 | previous definition. */ |
||
813 | |||
814 | c_symbol_merge (def_symbol_in_progress, symbolP); |
||
815 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
||
816 | |||
817 | def_symbol_in_progress = symbolP; |
||
818 | |||
819 | if (SF_GET_FUNCTION (def_symbol_in_progress) |
||
820 | || SF_GET_TAG (def_symbol_in_progress) |
||
821 | || S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT) |
||
822 | { |
||
823 | /* For functions, and tags, and static symbols, the symbol |
||
824 | *must* be where the debug symbol appears. Move the |
||
825 | existing symbol to the current place. */ |
||
826 | /* If it already is at the end of the symbol list, do nothing. */ |
||
827 | if (def_symbol_in_progress != symbol_lastP) |
||
828 | { |
||
829 | symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP); |
||
830 | symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); |
||
831 | } |
||
832 | } |
||
833 | } |
||
834 | |||
835 | if (SF_GET_TAG (def_symbol_in_progress)) |
||
836 | { |
||
837 | symbolS *oldtag; |
||
838 | |||
839 | oldtag = symbol_find (S_GET_NAME (def_symbol_in_progress)); |
||
840 | if (oldtag == NULL || ! SF_GET_TAG (oldtag)) |
||
841 | tag_insert (S_GET_NAME (def_symbol_in_progress), |
||
842 | def_symbol_in_progress); |
||
843 | } |
||
844 | |||
845 | if (SF_GET_FUNCTION (def_symbol_in_progress)) |
||
846 | { |
||
847 | set_function (def_symbol_in_progress); |
||
848 | SF_SET_PROCESS (def_symbol_in_progress); |
||
849 | |||
850 | if (symbolP == NULL) |
||
851 | /* That is, if this is the first time we've seen the |
||
852 | function. */ |
||
853 | symbol_table_insert (def_symbol_in_progress); |
||
854 | |||
855 | } |
||
856 | |||
857 | def_symbol_in_progress = NULL; |
||
858 | demand_empty_rest_of_line (); |
||
859 | } |
||
860 | |||
861 | static void |
||
862 | obj_coff_dim (int ignore ATTRIBUTE_UNUSED) |
||
863 | { |
||
864 | int d_index; |
||
865 | |||
866 | if (def_symbol_in_progress == NULL) |
||
867 | { |
||
868 | as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored.")); |
||
869 | demand_empty_rest_of_line (); |
||
870 | return; |
||
871 | } |
||
872 | |||
873 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
||
874 | |||
875 | for (d_index = 0; d_index < DIMNUM; d_index++) |
||
876 | { |
||
877 | SKIP_WHITESPACES (); |
||
878 | SA_SET_SYM_DIMEN (def_symbol_in_progress, d_index, |
||
879 | get_absolute_expression ()); |
||
880 | |||
881 | switch (*input_line_pointer) |
||
882 | { |
||
883 | case ',': |
||
884 | input_line_pointer++; |
||
885 | break; |
||
886 | |||
887 | default: |
||
888 | as_warn (_("badly formed .dim directive ignored")); |
||
889 | /* Fall through. */ |
||
890 | case '\n': |
||
891 | case ';': |
||
892 | d_index = DIMNUM; |
||
893 | break; |
||
894 | } |
||
895 | } |
||
896 | |||
897 | demand_empty_rest_of_line (); |
||
898 | } |
||
899 | |||
900 | static void |
||
901 | obj_coff_line (int ignore ATTRIBUTE_UNUSED) |
||
902 | { |
||
903 | int this_base; |
||
904 | |||
905 | if (def_symbol_in_progress == NULL) |
||
906 | { |
||
907 | /* Probably stabs-style line? */ |
||
908 | obj_coff_ln (0); |
||
909 | return; |
||
910 | } |
||
911 | |||
912 | this_base = get_absolute_expression (); |
||
913 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
||
914 | coff_line_base = this_base; |
||
915 | |||
916 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
||
917 | SA_SET_SYM_LNNO (def_symbol_in_progress, this_base); |
||
918 | |||
919 | demand_empty_rest_of_line (); |
||
920 | |||
921 | #ifndef NO_LISTING |
||
922 | if (streq (".bf", S_GET_NAME (def_symbol_in_progress))) |
||
923 | { |
||
924 | extern int listing; |
||
925 | |||
926 | if (listing) |
||
927 | listing_source_line ((unsigned int) this_base); |
||
928 | } |
||
929 | #endif |
||
930 | } |
||
931 | |||
932 | static void |
||
933 | obj_coff_size (int ignore ATTRIBUTE_UNUSED) |
||
934 | { |
||
935 | if (def_symbol_in_progress == NULL) |
||
936 | { |
||
937 | as_warn (_(".size pseudo-op used outside of .def/.endef ignored.")); |
||
938 | demand_empty_rest_of_line (); |
||
939 | return; |
||
940 | } |
||
941 | |||
942 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
||
943 | SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ()); |
||
944 | demand_empty_rest_of_line (); |
||
945 | } |
||
946 | |||
947 | static void |
||
948 | obj_coff_scl (int ignore ATTRIBUTE_UNUSED) |
||
949 | { |
||
950 | if (def_symbol_in_progress == NULL) |
||
951 | { |
||
952 | as_warn (_(".scl pseudo-op used outside of .def/.endef ignored.")); |
||
953 | demand_empty_rest_of_line (); |
||
954 | return; |
||
955 | } |
||
956 | |||
957 | S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ()); |
||
958 | demand_empty_rest_of_line (); |
||
959 | } |
||
960 | |||
961 | static void |
||
962 | obj_coff_tag (int ignore ATTRIBUTE_UNUSED) |
||
963 | { |
||
964 | char *symbol_name; |
||
965 | char name_end; |
||
966 | |||
967 | if (def_symbol_in_progress == NULL) |
||
968 | { |
||
969 | as_warn (_(".tag pseudo-op used outside of .def/.endef ignored.")); |
||
970 | demand_empty_rest_of_line (); |
||
971 | return; |
||
972 | } |
||
973 | |||
974 | S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1); |
||
6324 | serge | 975 | name_end = get_symbol_name (&symbol_name); |
5222 | serge | 976 | |
977 | #ifdef tc_canonicalize_symbol_name |
||
978 | symbol_name = tc_canonicalize_symbol_name (symbol_name); |
||
979 | #endif |
||
980 | |||
981 | /* Assume that the symbol referred to by .tag is always defined. |
||
982 | This was a bad assumption. I've added find_or_make. xoxorich. */ |
||
983 | SA_SET_SYM_TAGNDX (def_symbol_in_progress, |
||
984 | tag_find_or_make (symbol_name)); |
||
985 | if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L) |
||
986 | as_warn (_("tag not found for .tag %s"), symbol_name); |
||
987 | |||
988 | SF_SET_TAGGED (def_symbol_in_progress); |
||
989 | |||
6324 | serge | 990 | (void) restore_line_pointer (name_end); |
5222 | serge | 991 | demand_empty_rest_of_line (); |
992 | } |
||
993 | |||
994 | static void |
||
995 | obj_coff_type (int ignore ATTRIBUTE_UNUSED) |
||
996 | { |
||
997 | if (def_symbol_in_progress == NULL) |
||
998 | { |
||
999 | as_warn (_(".type pseudo-op used outside of .def/.endef ignored.")); |
||
1000 | demand_empty_rest_of_line (); |
||
1001 | return; |
||
1002 | } |
||
1003 | |||
1004 | S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ()); |
||
1005 | |||
1006 | if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) && |
||
1007 | S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF) |
||
1008 | SF_SET_FUNCTION (def_symbol_in_progress); |
||
1009 | |||
1010 | demand_empty_rest_of_line (); |
||
1011 | } |
||
1012 | |||
1013 | static void |
||
1014 | obj_coff_val (int ignore ATTRIBUTE_UNUSED) |
||
1015 | { |
||
1016 | if (def_symbol_in_progress == NULL) |
||
1017 | { |
||
1018 | as_warn (_(".val pseudo-op used outside of .def/.endef ignored.")); |
||
1019 | demand_empty_rest_of_line (); |
||
1020 | return; |
||
1021 | } |
||
1022 | |||
1023 | if (is_name_beginner (*input_line_pointer)) |
||
1024 | { |
||
6324 | serge | 1025 | char *symbol_name; |
1026 | char name_end = get_symbol_name (&symbol_name); |
||
5222 | serge | 1027 | |
1028 | #ifdef tc_canonicalize_symbol_name |
||
6324 | serge | 1029 | symbol_name = tc_canonicalize_symbol_name (symbol_name); |
5222 | serge | 1030 | #endif |
1031 | if (streq (symbol_name, ".")) |
||
1032 | { |
||
1033 | /* If the .val is != from the .def (e.g. statics). */ |
||
1034 | symbol_set_frag (def_symbol_in_progress, frag_now); |
||
1035 | S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ()); |
||
1036 | } |
||
1037 | else if (! streq (S_GET_NAME (def_symbol_in_progress), symbol_name)) |
||
1038 | { |
||
1039 | expressionS exp; |
||
1040 | |||
1041 | exp.X_op = O_symbol; |
||
1042 | exp.X_add_symbol = symbol_find_or_make (symbol_name); |
||
1043 | exp.X_op_symbol = NULL; |
||
1044 | exp.X_add_number = 0; |
||
1045 | symbol_set_value_expression (def_symbol_in_progress, &exp); |
||
1046 | |||
1047 | /* If the segment is undefined when the forward reference is |
||
1048 | resolved, then copy the segment id from the forward |
||
1049 | symbol. */ |
||
1050 | SF_SET_GET_SEGMENT (def_symbol_in_progress); |
||
1051 | |||
1052 | /* FIXME: gcc can generate address expressions here in |
||
1053 | unusual cases (search for "obscure" in sdbout.c). We |
||
1054 | just ignore the offset here, thus generating incorrect |
||
1055 | debugging information. We ignore the rest of the line |
||
1056 | just below. */ |
||
1057 | } |
||
1058 | /* Otherwise, it is the name of a non debug symbol and its value |
||
1059 | will be calculated later. */ |
||
6324 | serge | 1060 | (void) restore_line_pointer (name_end); |
5222 | serge | 1061 | } |
1062 | else |
||
1063 | { |
||
1064 | S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ()); |
||
1065 | } |
||
1066 | |||
1067 | demand_empty_rest_of_line (); |
||
1068 | } |
||
1069 | |||
1070 | #ifdef TE_PE |
||
1071 | |||
1072 | /* Return nonzero if name begins with weak alternate symbol prefix. */ |
||
1073 | |||
1074 | static int |
||
1075 | weak_is_altname (const char * name) |
||
1076 | { |
||
1077 | return strneq (name, weak_altprefix, sizeof (weak_altprefix) - 1); |
||
1078 | } |
||
1079 | |||
1080 | /* Return the name of the alternate symbol |
||
1081 | name corresponding to a weak symbol's name. */ |
||
1082 | |||
1083 | static const char * |
||
1084 | weak_name2altname (const char * name) |
||
1085 | { |
||
1086 | char *alt_name; |
||
1087 | |||
1088 | alt_name = xmalloc (sizeof (weak_altprefix) + strlen (name)); |
||
1089 | strcpy (alt_name, weak_altprefix); |
||
1090 | return strcat (alt_name, name); |
||
1091 | } |
||
1092 | |||
1093 | /* Return the name of the weak symbol corresponding to an |
||
1094 | alternate symbol. */ |
||
1095 | |||
1096 | static const char * |
||
1097 | weak_altname2name (const char * name) |
||
1098 | { |
||
1099 | gas_assert (weak_is_altname (name)); |
||
1100 | return xstrdup (name + 6); |
||
1101 | } |
||
1102 | |||
1103 | /* Make a weak symbol name unique by |
||
1104 | appending the name of an external symbol. */ |
||
1105 | |||
1106 | static const char * |
||
1107 | weak_uniquify (const char * name) |
||
1108 | { |
||
1109 | char *ret; |
||
1110 | const char * unique = ""; |
||
1111 | |||
1112 | #ifdef TE_PE |
||
1113 | if (an_external_name != NULL) |
||
1114 | unique = an_external_name; |
||
1115 | #endif |
||
1116 | gas_assert (weak_is_altname (name)); |
||
1117 | |||
1118 | ret = xmalloc (strlen (name) + strlen (unique) + 2); |
||
1119 | strcpy (ret, name); |
||
1120 | strcat (ret, "."); |
||
1121 | strcat (ret, unique); |
||
1122 | return ret; |
||
1123 | } |
||
1124 | |||
1125 | void |
||
1126 | pecoff_obj_set_weak_hook (symbolS *symbolP) |
||
1127 | { |
||
1128 | symbolS *alternateP; |
||
1129 | |||
1130 | /* See _Microsoft Portable Executable and Common Object |
||
1131 | File Format Specification_, section 5.5.3. |
||
1132 | Create a symbol representing the alternate value. |
||
1133 | coff_frob_symbol will set the value of this symbol from |
||
1134 | the value of the weak symbol itself. */ |
||
1135 | S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK); |
||
1136 | S_SET_NUMBER_AUXILIARY (symbolP, 1); |
||
1137 | SA_SET_SYM_FSIZE (symbolP, IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY); |
||
1138 | |||
1139 | alternateP = symbol_find_or_make (weak_name2altname (S_GET_NAME (symbolP))); |
||
1140 | S_SET_EXTERNAL (alternateP); |
||
1141 | S_SET_STORAGE_CLASS (alternateP, C_NT_WEAK); |
||
1142 | |||
1143 | SA_SET_SYM_TAGNDX (symbolP, alternateP); |
||
1144 | } |
||
1145 | |||
1146 | void |
||
1147 | pecoff_obj_clear_weak_hook (symbolS *symbolP) |
||
1148 | { |
||
1149 | symbolS *alternateP; |
||
1150 | |||
1151 | S_SET_STORAGE_CLASS (symbolP, 0); |
||
1152 | SA_SET_SYM_FSIZE (symbolP, 0); |
||
1153 | |||
1154 | alternateP = symbol_find (weak_name2altname (S_GET_NAME (symbolP))); |
||
1155 | S_CLEAR_EXTERNAL (alternateP); |
||
1156 | } |
||
1157 | |||
1158 | #endif /* TE_PE */ |
||
1159 | |||
1160 | /* Handle .weak. This is a GNU extension in formats other than PE. */ |
||
1161 | |||
1162 | static void |
||
1163 | obj_coff_weak (int ignore ATTRIBUTE_UNUSED) |
||
1164 | { |
||
1165 | char *name; |
||
1166 | int c; |
||
1167 | symbolS *symbolP; |
||
1168 | |||
1169 | do |
||
1170 | { |
||
6324 | serge | 1171 | c = get_symbol_name (&name); |
5222 | serge | 1172 | if (*name == 0) |
1173 | { |
||
1174 | as_warn (_("badly formed .weak directive ignored")); |
||
1175 | ignore_rest_of_line (); |
||
1176 | return; |
||
1177 | } |
||
1178 | c = 0; |
||
1179 | symbolP = symbol_find_or_make (name); |
||
1180 | *input_line_pointer = c; |
||
6324 | serge | 1181 | SKIP_WHITESPACE_AFTER_NAME (); |
5222 | serge | 1182 | S_SET_WEAK (symbolP); |
1183 | |||
1184 | if (c == ',') |
||
1185 | { |
||
1186 | input_line_pointer++; |
||
1187 | SKIP_WHITESPACE (); |
||
1188 | if (*input_line_pointer == '\n') |
||
1189 | c = '\n'; |
||
1190 | } |
||
1191 | |||
1192 | } |
||
1193 | while (c == ','); |
||
1194 | |||
1195 | demand_empty_rest_of_line (); |
||
1196 | } |
||
1197 | |||
1198 | void |
||
1199 | coff_obj_read_begin_hook (void) |
||
1200 | { |
||
1201 | /* These had better be the same. Usually 18 bytes. */ |
||
1202 | know (sizeof (SYMENT) == sizeof (AUXENT)); |
||
1203 | know (SYMESZ == AUXESZ); |
||
1204 | tag_init (); |
||
1205 | } |
||
1206 | |||
1207 | symbolS *coff_last_function; |
||
1208 | #ifndef OBJ_XCOFF |
||
1209 | static symbolS *coff_last_bf; |
||
1210 | #endif |
||
1211 | |||
1212 | void |
||
1213 | coff_frob_symbol (symbolS *symp, int *punt) |
||
1214 | { |
||
1215 | static symbolS *last_tagP; |
||
1216 | static stack *block_stack; |
||
1217 | static symbolS *set_end; |
||
1218 | symbolS *next_set_end = NULL; |
||
1219 | |||
1220 | if (symp == &abs_symbol) |
||
1221 | { |
||
1222 | *punt = 1; |
||
1223 | return; |
||
1224 | } |
||
1225 | |||
1226 | if (current_lineno_sym) |
||
1227 | coff_add_linesym (NULL); |
||
1228 | |||
1229 | if (!block_stack) |
||
1230 | block_stack = stack_init (512, sizeof (symbolS*)); |
||
1231 | |||
1232 | #ifdef TE_PE |
||
1233 | if (S_GET_STORAGE_CLASS (symp) == C_NT_WEAK |
||
1234 | && ! S_IS_WEAK (symp) |
||
1235 | && weak_is_altname (S_GET_NAME (symp))) |
||
1236 | { |
||
1237 | /* This is a weak alternate symbol. All processing of |
||
1238 | PECOFFweak symbols is done here, through the alternate. */ |
||
1239 | symbolS *weakp = symbol_find_noref (weak_altname2name |
||
1240 | (S_GET_NAME (symp)), 1); |
||
1241 | |||
1242 | gas_assert (weakp); |
||
1243 | gas_assert (S_GET_NUMBER_AUXILIARY (weakp) == 1); |
||
1244 | |||
1245 | if (! S_IS_WEAK (weakp)) |
||
1246 | { |
||
1247 | /* The symbol was turned from weak to strong. Discard altname. */ |
||
1248 | *punt = 1; |
||
1249 | return; |
||
1250 | } |
||
1251 | else if (symbol_equated_p (weakp)) |
||
1252 | { |
||
1253 | /* The weak symbol has an alternate specified; symp is unneeded. */ |
||
1254 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); |
||
1255 | SA_SET_SYM_TAGNDX (weakp, |
||
1256 | symbol_get_value_expression (weakp)->X_add_symbol); |
||
1257 | |||
1258 | S_CLEAR_EXTERNAL (symp); |
||
1259 | *punt = 1; |
||
1260 | return; |
||
1261 | } |
||
1262 | else |
||
1263 | { |
||
1264 | /* The weak symbol has been assigned an alternate value. |
||
1265 | Copy this value to symp, and set symp as weakp's alternate. */ |
||
1266 | if (S_GET_STORAGE_CLASS (weakp) != C_NT_WEAK) |
||
1267 | { |
||
1268 | S_SET_STORAGE_CLASS (symp, S_GET_STORAGE_CLASS (weakp)); |
||
1269 | S_SET_STORAGE_CLASS (weakp, C_NT_WEAK); |
||
1270 | } |
||
1271 | |||
1272 | if (S_IS_DEFINED (weakp)) |
||
1273 | { |
||
1274 | /* This is a defined weak symbol. Copy value information |
||
1275 | from the weak symbol itself to the alternate symbol. */ |
||
1276 | symbol_set_value_expression (symp, |
||
1277 | symbol_get_value_expression (weakp)); |
||
1278 | symbol_set_frag (symp, symbol_get_frag (weakp)); |
||
1279 | S_SET_SEGMENT (symp, S_GET_SEGMENT (weakp)); |
||
1280 | } |
||
1281 | else |
||
1282 | { |
||
1283 | /* This is an undefined weak symbol. |
||
1284 | Define the alternate symbol to zero. */ |
||
1285 | S_SET_VALUE (symp, 0); |
||
1286 | S_SET_SEGMENT (symp, absolute_section); |
||
1287 | } |
||
1288 | |||
1289 | S_SET_NAME (symp, weak_uniquify (S_GET_NAME (symp))); |
||
1290 | S_SET_STORAGE_CLASS (symp, C_EXT); |
||
1291 | |||
1292 | S_SET_VALUE (weakp, 0); |
||
1293 | S_SET_SEGMENT (weakp, undefined_section); |
||
1294 | } |
||
1295 | } |
||
1296 | #else /* TE_PE */ |
||
1297 | if (S_IS_WEAK (symp)) |
||
1298 | S_SET_STORAGE_CLASS (symp, C_WEAKEXT); |
||
1299 | #endif /* TE_PE */ |
||
1300 | |||
1301 | if (!S_IS_DEFINED (symp) |
||
1302 | && !S_IS_WEAK (symp) |
||
1303 | && S_GET_STORAGE_CLASS (symp) != C_STAT) |
||
1304 | S_SET_STORAGE_CLASS (symp, C_EXT); |
||
1305 | |||
1306 | if (!SF_GET_DEBUG (symp)) |
||
1307 | { |
||
1308 | symbolS * real; |
||
1309 | |||
1310 | if (!SF_GET_LOCAL (symp) |
||
1311 | && !SF_GET_STATICS (symp) |
||
1312 | && S_GET_STORAGE_CLASS (symp) != C_LABEL |
||
1313 | && symbol_constant_p (symp) |
||
1314 | && (real = symbol_find_noref (S_GET_NAME (symp), 1)) |
||
1315 | && S_GET_STORAGE_CLASS (real) == C_NULL |
||
1316 | && real != symp) |
||
1317 | { |
||
1318 | c_symbol_merge (symp, real); |
||
1319 | *punt = 1; |
||
1320 | return; |
||
1321 | } |
||
1322 | |||
1323 | if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp)) |
||
1324 | { |
||
1325 | gas_assert (S_GET_VALUE (symp) == 0); |
||
1326 | if (S_IS_WEAKREFD (symp)) |
||
1327 | *punt = 1; |
||
1328 | else |
||
1329 | S_SET_EXTERNAL (symp); |
||
1330 | } |
||
1331 | else if (S_GET_STORAGE_CLASS (symp) == C_NULL) |
||
1332 | { |
||
1333 | if (S_GET_SEGMENT (symp) == text_section |
||
1334 | && symp != seg_info (text_section)->sym) |
||
1335 | S_SET_STORAGE_CLASS (symp, C_LABEL); |
||
1336 | else |
||
1337 | S_SET_STORAGE_CLASS (symp, C_STAT); |
||
1338 | } |
||
1339 | |||
1340 | if (SF_GET_PROCESS (symp)) |
||
1341 | { |
||
1342 | if (S_GET_STORAGE_CLASS (symp) == C_BLOCK) |
||
1343 | { |
||
1344 | if (streq (S_GET_NAME (symp), ".bb")) |
||
1345 | stack_push (block_stack, (char *) &symp); |
||
1346 | else |
||
1347 | { |
||
1348 | symbolS *begin; |
||
1349 | |||
1350 | begin = *(symbolS **) stack_pop (block_stack); |
||
1351 | if (begin == 0) |
||
1352 | as_warn (_("mismatched .eb")); |
||
1353 | else |
||
1354 | next_set_end = begin; |
||
1355 | } |
||
1356 | } |
||
1357 | |||
1358 | if (coff_last_function == 0 && SF_GET_FUNCTION (symp) |
||
1359 | && S_IS_DEFINED (symp)) |
||
1360 | { |
||
1361 | union internal_auxent *auxp; |
||
1362 | |||
1363 | coff_last_function = symp; |
||
1364 | if (S_GET_NUMBER_AUXILIARY (symp) < 1) |
||
1365 | S_SET_NUMBER_AUXILIARY (symp, 1); |
||
1366 | auxp = SYM_AUXENT (symp); |
||
1367 | memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0, |
||
1368 | sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen)); |
||
1369 | } |
||
1370 | |||
1371 | if (S_GET_STORAGE_CLASS (symp) == C_EFCN |
||
1372 | && S_IS_DEFINED (symp)) |
||
1373 | { |
||
1374 | if (coff_last_function == 0) |
||
1375 | as_fatal (_("C_EFCN symbol for %s out of scope"), |
||
1376 | S_GET_NAME (symp)); |
||
1377 | SA_SET_SYM_FSIZE (coff_last_function, |
||
1378 | (long) (S_GET_VALUE (symp) |
||
1379 | - S_GET_VALUE (coff_last_function))); |
||
1380 | next_set_end = coff_last_function; |
||
1381 | coff_last_function = 0; |
||
1382 | } |
||
1383 | } |
||
1384 | |||
1385 | if (S_IS_EXTERNAL (symp)) |
||
1386 | S_SET_STORAGE_CLASS (symp, C_EXT); |
||
1387 | else if (SF_GET_LOCAL (symp)) |
||
1388 | *punt = 1; |
||
1389 | |||
1390 | if (SF_GET_FUNCTION (symp)) |
||
1391 | symbol_get_bfdsym (symp)->flags |= BSF_FUNCTION; |
||
1392 | } |
||
1393 | |||
1394 | /* Double check weak symbols. */ |
||
1395 | if (S_IS_WEAK (symp) && S_IS_COMMON (symp)) |
||
1396 | as_bad (_("Symbol `%s' can not be both weak and common"), |
||
1397 | S_GET_NAME (symp)); |
||
1398 | |||
1399 | if (SF_GET_TAG (symp)) |
||
1400 | last_tagP = symp; |
||
1401 | else if (S_GET_STORAGE_CLASS (symp) == C_EOS) |
||
1402 | next_set_end = last_tagP; |
||
1403 | |||
1404 | #ifdef OBJ_XCOFF |
||
1405 | /* This is pretty horrible, but we have to set *punt correctly in |
||
1406 | order to call SA_SET_SYM_ENDNDX correctly. */ |
||
1407 | if (! symbol_used_in_reloc_p (symp) |
||
1408 | && ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0 |
||
1409 | || (! (S_IS_EXTERNAL (symp) || S_IS_WEAK (symp)) |
||
1410 | && ! symbol_get_tc (symp)->output |
||
1411 | && S_GET_STORAGE_CLASS (symp) != C_FILE))) |
||
1412 | *punt = 1; |
||
1413 | #endif |
||
1414 | |||
1415 | if (set_end != (symbolS *) NULL |
||
1416 | && ! *punt |
||
1417 | && ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0 |
||
1418 | || (S_IS_DEFINED (symp) |
||
1419 | && ! S_IS_COMMON (symp) |
||
1420 | && (! S_IS_EXTERNAL (symp) || SF_GET_FUNCTION (symp))))) |
||
1421 | { |
||
1422 | SA_SET_SYM_ENDNDX (set_end, symp); |
||
1423 | set_end = NULL; |
||
1424 | } |
||
1425 | |||
1426 | if (next_set_end != NULL) |
||
1427 | { |
||
1428 | if (set_end != NULL) |
||
1429 | as_warn (_("Warning: internal error: forgetting to set endndx of %s"), |
||
1430 | S_GET_NAME (set_end)); |
||
1431 | set_end = next_set_end; |
||
1432 | } |
||
1433 | |||
1434 | #ifndef OBJ_XCOFF |
||
1435 | if (! *punt |
||
1436 | && S_GET_STORAGE_CLASS (symp) == C_FCN |
||
1437 | && streq (S_GET_NAME (symp), ".bf")) |
||
1438 | { |
||
1439 | if (coff_last_bf != NULL) |
||
1440 | SA_SET_SYM_ENDNDX (coff_last_bf, symp); |
||
1441 | coff_last_bf = symp; |
||
1442 | } |
||
1443 | #endif |
||
1444 | if (coffsymbol (symbol_get_bfdsym (symp))->lineno) |
||
1445 | { |
||
1446 | int i; |
||
1447 | struct line_no *lptr; |
||
1448 | alent *l; |
||
1449 | |||
1450 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
||
1451 | for (i = 0; lptr; lptr = lptr->next) |
||
1452 | i++; |
||
1453 | lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno; |
||
1454 | |||
1455 | /* We need i entries for line numbers, plus 1 for the first |
||
1456 | entry which BFD will override, plus 1 for the last zero |
||
1457 | entry (a marker for BFD). */ |
||
1458 | l = xmalloc ((i + 2) * sizeof (* l)); |
||
1459 | coffsymbol (symbol_get_bfdsym (symp))->lineno = l; |
||
1460 | l[i + 1].line_number = 0; |
||
1461 | l[i + 1].u.sym = NULL; |
||
1462 | for (; i > 0; i--) |
||
1463 | { |
||
1464 | if (lptr->frag) |
||
1465 | lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE; |
||
1466 | l[i] = lptr->l; |
||
1467 | lptr = lptr->next; |
||
1468 | } |
||
1469 | } |
||
1470 | } |
||
1471 | |||
1472 | void |
||
1473 | coff_adjust_section_syms (bfd *abfd ATTRIBUTE_UNUSED, |
||
1474 | asection *sec, |
||
1475 | void * x ATTRIBUTE_UNUSED) |
||
1476 | { |
||
1477 | symbolS *secsym; |
||
1478 | segment_info_type *seginfo = seg_info (sec); |
||
1479 | int nlnno, nrelocs = 0; |
||
1480 | |||
1481 | /* RS/6000 gas creates a .debug section manually in ppc_frob_file in |
||
1482 | tc-ppc.c. Do not get confused by it. */ |
||
1483 | if (seginfo == NULL) |
||
1484 | return; |
||
1485 | |||
1486 | if (streq (sec->name, ".text")) |
||
1487 | nlnno = coff_n_line_nos; |
||
1488 | else |
||
1489 | nlnno = 0; |
||
1490 | { |
||
1491 | /* @@ Hope that none of the fixups expand to more than one reloc |
||
1492 | entry... */ |
||
1493 | fixS *fixp = seginfo->fix_root; |
||
1494 | while (fixp) |
||
1495 | { |
||
1496 | if (! fixp->fx_done) |
||
1497 | nrelocs++; |
||
1498 | fixp = fixp->fx_next; |
||
1499 | } |
||
1500 | } |
||
1501 | if (bfd_get_section_size (sec) == 0 |
||
1502 | && nrelocs == 0 |
||
1503 | && nlnno == 0 |
||
1504 | && sec != text_section |
||
1505 | && sec != data_section |
||
1506 | && sec != bss_section) |
||
1507 | return; |
||
1508 | |||
1509 | secsym = section_symbol (sec); |
||
1510 | /* This is an estimate; we'll plug in the real value using |
||
1511 | SET_SECTION_RELOCS later */ |
||
1512 | SA_SET_SCN_NRELOC (secsym, nrelocs); |
||
1513 | SA_SET_SCN_NLINNO (secsym, nlnno); |
||
1514 | } |
||
1515 | |||
1516 | void |
||
1517 | coff_frob_file_after_relocs (void) |
||
1518 | { |
||
1519 | bfd_map_over_sections (stdoutput, coff_adjust_section_syms, NULL); |
||
1520 | } |
||
1521 | |||
1522 | /* Implement the .section pseudo op: |
||
1523 | .section name {, "flags"} |
||
1524 | ^ ^ |
||
1525 | | +--- optional flags: 'b' for bss |
||
1526 | | 'i' for info |
||
1527 | +-- section name 'l' for lib |
||
1528 | 'n' for noload |
||
1529 | 'o' for over |
||
1530 | 'w' for data |
||
1531 | 'd' (apparently m88k for data) |
||
1532 | 'e' for exclude |
||
1533 | 'x' for text |
||
1534 | 'r' for read-only data |
||
1535 | 's' for shared data (PE) |
||
1536 | 'y' for noread |
||
1537 | '0' - '9' for power-of-two alignment (GNU extension). |
||
1538 | But if the argument is not a quoted string, treat it as a |
||
1539 | subsegment number. |
||
1540 | |||
1541 | Note the 'a' flag is silently ignored. This allows the same |
||
1542 | .section directive to be parsed in both ELF and COFF formats. */ |
||
1543 | |||
1544 | void |
||
1545 | obj_coff_section (int ignore ATTRIBUTE_UNUSED) |
||
1546 | { |
||
1547 | /* Strip out the section name. */ |
||
1548 | char *section_name; |
||
1549 | char c; |
||
1550 | int alignment = -1; |
||
1551 | char *name; |
||
1552 | unsigned int exp; |
||
1553 | flagword flags, oldflags; |
||
1554 | asection *sec; |
||
1555 | |||
1556 | if (flag_mri) |
||
1557 | { |
||
1558 | char type; |
||
1559 | |||
1560 | s_mri_sect (&type); |
||
1561 | return; |
||
1562 | } |
||
1563 | |||
6324 | serge | 1564 | c = get_symbol_name (§ion_name); |
5222 | serge | 1565 | name = xmalloc (input_line_pointer - section_name + 1); |
1566 | strcpy (name, section_name); |
||
1567 | *input_line_pointer = c; |
||
6324 | serge | 1568 | SKIP_WHITESPACE_AFTER_NAME (); |
5222 | serge | 1569 | |
1570 | exp = 0; |
||
1571 | flags = SEC_NO_FLAGS; |
||
1572 | |||
1573 | if (*input_line_pointer == ',') |
||
1574 | { |
||
1575 | ++input_line_pointer; |
||
1576 | SKIP_WHITESPACE (); |
||
1577 | if (*input_line_pointer != '"') |
||
1578 | exp = get_absolute_expression (); |
||
1579 | else |
||
1580 | { |
||
1581 | unsigned char attr; |
||
1582 | int readonly_removed = 0; |
||
1583 | int load_removed = 0; |
||
1584 | |||
1585 | while (attr = *++input_line_pointer, |
||
1586 | attr != '"' |
||
1587 | && ! is_end_of_line[attr]) |
||
1588 | { |
||
1589 | if (ISDIGIT (attr)) |
||
1590 | { |
||
1591 | alignment = attr - '0'; |
||
1592 | continue; |
||
1593 | } |
||
1594 | switch (attr) |
||
1595 | { |
||
1596 | case 'e': |
||
1597 | /* Exclude section from linking. */ |
||
1598 | flags |= SEC_EXCLUDE; |
||
1599 | break; |
||
1600 | |||
1601 | case 'b': |
||
1602 | /* Uninitialised data section. */ |
||
1603 | flags |= SEC_ALLOC; |
||
1604 | flags &=~ SEC_LOAD; |
||
1605 | break; |
||
1606 | |||
1607 | case 'n': |
||
1608 | /* Section not loaded. */ |
||
1609 | flags &=~ SEC_LOAD; |
||
1610 | flags |= SEC_NEVER_LOAD; |
||
1611 | load_removed = 1; |
||
1612 | break; |
||
1613 | |||
1614 | case 's': |
||
1615 | /* Shared section. */ |
||
1616 | flags |= SEC_COFF_SHARED; |
||
1617 | /* Fall through. */ |
||
1618 | case 'd': |
||
1619 | /* Data section. */ |
||
1620 | flags |= SEC_DATA; |
||
1621 | if (! load_removed) |
||
1622 | flags |= SEC_LOAD; |
||
1623 | flags &=~ SEC_READONLY; |
||
1624 | break; |
||
1625 | |||
1626 | case 'w': |
||
1627 | /* Writable section. */ |
||
1628 | flags &=~ SEC_READONLY; |
||
1629 | readonly_removed = 1; |
||
1630 | break; |
||
1631 | |||
1632 | case 'a': |
||
1633 | /* Ignore. Here for compatibility with ELF. */ |
||
1634 | break; |
||
1635 | |||
1636 | case 'r': /* Read-only section. Implies a data section. */ |
||
1637 | readonly_removed = 0; |
||
1638 | /* Fall through. */ |
||
1639 | case 'x': /* Executable section. */ |
||
1640 | /* If we are setting the 'x' attribute or if the 'r' |
||
1641 | attribute is being used to restore the readonly status |
||
1642 | of a code section (eg "wxr") then set the SEC_CODE flag, |
||
1643 | otherwise set the SEC_DATA flag. */ |
||
1644 | flags |= (attr == 'x' || (flags & SEC_CODE) ? SEC_CODE : SEC_DATA); |
||
1645 | if (! load_removed) |
||
1646 | flags |= SEC_LOAD; |
||
1647 | /* Note - the READONLY flag is set here, even for the 'x' |
||
1648 | attribute in order to be compatible with the MSVC |
||
1649 | linker. */ |
||
1650 | if (! readonly_removed) |
||
1651 | flags |= SEC_READONLY; |
||
1652 | break; |
||
1653 | |||
1654 | case 'y': |
||
1655 | flags |= SEC_COFF_NOREAD | SEC_READONLY; |
||
1656 | break; |
||
1657 | |||
1658 | case 'i': /* STYP_INFO */ |
||
1659 | case 'l': /* STYP_LIB */ |
||
1660 | case 'o': /* STYP_OVER */ |
||
1661 | as_warn (_("unsupported section attribute '%c'"), attr); |
||
1662 | break; |
||
1663 | |||
1664 | default: |
||
1665 | as_warn (_("unknown section attribute '%c'"), attr); |
||
1666 | break; |
||
1667 | } |
||
1668 | } |
||
1669 | if (attr == '"') |
||
1670 | ++input_line_pointer; |
||
1671 | } |
||
1672 | } |
||
1673 | |||
1674 | sec = subseg_new (name, (subsegT) exp); |
||
1675 | |||
1676 | if (alignment >= 0) |
||
1677 | sec->alignment_power = alignment; |
||
1678 | |||
1679 | oldflags = bfd_get_section_flags (stdoutput, sec); |
||
1680 | if (oldflags == SEC_NO_FLAGS) |
||
1681 | { |
||
1682 | /* Set section flags for a new section just created by subseg_new. |
||
1683 | Provide a default if no flags were parsed. */ |
||
1684 | if (flags == SEC_NO_FLAGS) |
||
1685 | flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES; |
||
1686 | |||
1687 | #ifdef COFF_LONG_SECTION_NAMES |
||
1688 | /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce |
||
1689 | sections so adjust_reloc_syms in write.c will correctly handle |
||
1690 | relocs which refer to non-local symbols in these sections. */ |
||
1691 | if (strneq (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1)) |
||
1692 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
||
1693 | #endif |
||
1694 | |||
1695 | if (! bfd_set_section_flags (stdoutput, sec, flags)) |
||
1696 | as_warn (_("error setting flags for \"%s\": %s"), |
||
1697 | bfd_section_name (stdoutput, sec), |
||
1698 | bfd_errmsg (bfd_get_error ())); |
||
1699 | } |
||
1700 | else if (flags != SEC_NO_FLAGS) |
||
1701 | { |
||
1702 | /* This section's attributes have already been set. Warn if the |
||
1703 | attributes don't match. */ |
||
1704 | flagword matchflags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
||
1705 | | SEC_DATA | SEC_COFF_SHARED | SEC_NEVER_LOAD |
||
1706 | | SEC_COFF_NOREAD); |
||
1707 | if ((flags ^ oldflags) & matchflags) |
||
1708 | as_warn (_("Ignoring changed section attributes for %s"), name); |
||
1709 | } |
||
1710 | |||
1711 | demand_empty_rest_of_line (); |
||
1712 | } |
||
1713 | |||
1714 | void |
||
1715 | coff_adjust_symtab (void) |
||
1716 | { |
||
1717 | if (symbol_rootP == NULL |
||
1718 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) |
||
1719 | c_dot_file_symbol ("fake", 0); |
||
1720 | } |
||
1721 | |||
1722 | void |
||
1723 | coff_frob_section (segT sec) |
||
1724 | { |
||
1725 | segT strsec; |
||
1726 | char *p; |
||
1727 | fragS *fragp; |
||
1728 | bfd_vma n_entries; |
||
1729 | |||
1730 | /* The COFF back end in BFD requires that all section sizes be |
||
1731 | rounded up to multiples of the corresponding section alignments, |
||
1732 | supposedly because standard COFF has no other way of encoding alignment |
||
1733 | for sections. If your COFF flavor has a different way of encoding |
||
1734 | section alignment, then skip this step, as TICOFF does. */ |
||
1735 | bfd_vma size = bfd_get_section_size (sec); |
||
1736 | #if !defined(TICOFF) |
||
1737 | bfd_vma align_power = (bfd_vma) sec->alignment_power + OCTETS_PER_BYTE_POWER; |
||
1738 | bfd_vma mask = ((bfd_vma) 1 << align_power) - 1; |
||
1739 | |||
1740 | if (size & mask) |
||
1741 | { |
||
1742 | bfd_vma new_size; |
||
1743 | fragS *last; |
||
1744 | |||
1745 | new_size = (size + mask) & ~mask; |
||
1746 | bfd_set_section_size (stdoutput, sec, new_size); |
||
1747 | |||
1748 | /* If the size had to be rounded up, add some padding in |
||
1749 | the last non-empty frag. */ |
||
1750 | fragp = seg_info (sec)->frchainP->frch_root; |
||
1751 | last = seg_info (sec)->frchainP->frch_last; |
||
1752 | while (fragp->fr_next != last) |
||
1753 | fragp = fragp->fr_next; |
||
1754 | last->fr_address = size; |
||
1755 | fragp->fr_offset += new_size - size; |
||
1756 | } |
||
1757 | #endif |
||
1758 | |||
1759 | /* If the section size is non-zero, the section symbol needs an aux |
||
1760 | entry associated with it, indicating the size. We don't know |
||
1761 | all the values yet; coff_frob_symbol will fill them in later. */ |
||
1762 | #ifndef TICOFF |
||
1763 | if (size != 0 |
||
1764 | || sec == text_section |
||
1765 | || sec == data_section |
||
1766 | || sec == bss_section) |
||
1767 | #endif |
||
1768 | { |
||
1769 | symbolS *secsym = section_symbol (sec); |
||
1770 | unsigned char sclass = C_STAT; |
||
1771 | |||
1772 | #ifdef OBJ_XCOFF |
||
1773 | if (bfd_get_section_flags (stdoutput, sec) & SEC_DEBUGGING) |
||
1774 | sclass = C_DWARF; |
||
1775 | #endif |
||
1776 | S_SET_STORAGE_CLASS (secsym, sclass); |
||
1777 | S_SET_NUMBER_AUXILIARY (secsym, 1); |
||
1778 | SF_SET_STATICS (secsym); |
||
1779 | SA_SET_SCN_SCNLEN (secsym, size); |
||
1780 | } |
||
1781 | /* FIXME: These should be in a "stabs.h" file, or maybe as.h. */ |
||
1782 | #ifndef STAB_SECTION_NAME |
||
1783 | #define STAB_SECTION_NAME ".stab" |
||
1784 | #endif |
||
1785 | #ifndef STAB_STRING_SECTION_NAME |
||
1786 | #define STAB_STRING_SECTION_NAME ".stabstr" |
||
1787 | #endif |
||
1788 | if (! streq (STAB_STRING_SECTION_NAME, sec->name)) |
||
1789 | return; |
||
1790 | |||
1791 | strsec = sec; |
||
1792 | sec = subseg_get (STAB_SECTION_NAME, 0); |
||
1793 | /* size is already rounded up, since other section will be listed first */ |
||
1794 | size = bfd_get_section_size (strsec); |
||
1795 | |||
1796 | n_entries = bfd_get_section_size (sec) / 12 - 1; |
||
1797 | |||
1798 | /* Find first non-empty frag. It should be large enough. */ |
||
1799 | fragp = seg_info (sec)->frchainP->frch_root; |
||
1800 | while (fragp && fragp->fr_fix == 0) |
||
1801 | fragp = fragp->fr_next; |
||
1802 | gas_assert (fragp != 0 && fragp->fr_fix >= 12); |
||
1803 | |||
1804 | /* Store the values. */ |
||
1805 | p = fragp->fr_literal; |
||
1806 | bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6); |
||
1807 | bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8); |
||
1808 | } |
||
1809 | |||
1810 | void |
||
1811 | obj_coff_init_stab_section (segT seg) |
||
1812 | { |
||
1813 | char *file; |
||
1814 | char *p; |
||
1815 | char *stabstr_name; |
||
1816 | unsigned int stroff; |
||
1817 | |||
1818 | /* Make space for this first symbol. */ |
||
1819 | p = frag_more (12); |
||
1820 | /* Zero it out. */ |
||
1821 | memset (p, 0, 12); |
||
1822 | as_where (&file, (unsigned int *) NULL); |
||
1823 | stabstr_name = xmalloc (strlen (seg->name) + 4); |
||
1824 | strcpy (stabstr_name, seg->name); |
||
1825 | strcat (stabstr_name, "str"); |
||
1826 | stroff = get_stab_string_offset (file, stabstr_name); |
||
1827 | know (stroff == 1); |
||
1828 | md_number_to_chars (p, stroff, 4); |
||
1829 | } |
||
1830 | |||
1831 | #ifdef DEBUG |
||
1832 | const char * s_get_name (symbolS *); |
||
1833 | |||
1834 | const char * |
||
1835 | s_get_name (symbolS *s) |
||
1836 | { |
||
1837 | return ((s == NULL) ? "(NULL)" : S_GET_NAME (s)); |
||
1838 | } |
||
1839 | |||
1840 | void symbol_dump (void); |
||
1841 | |||
1842 | void |
||
1843 | symbol_dump (void) |
||
1844 | { |
||
1845 | symbolS *symbolP; |
||
1846 | |||
1847 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) |
||
1848 | printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"), |
||
1849 | (unsigned long) symbolP, |
||
1850 | S_GET_NAME (symbolP), |
||
1851 | (long) S_GET_DATA_TYPE (symbolP), |
||
1852 | S_GET_STORAGE_CLASS (symbolP), |
||
1853 | (int) S_GET_SEGMENT (symbolP)); |
||
1854 | } |
||
1855 | |||
1856 | #endif /* DEBUG */ |
||
1857 | |||
1858 | const pseudo_typeS coff_pseudo_table[] = |
||
1859 | { |
||
1860 | {"ABORT", s_abort, 0}, |
||
1861 | {"appline", obj_coff_ln, 1}, |
||
1862 | /* We accept the .bss directive for backward compatibility with |
||
1863 | earlier versions of gas. */ |
||
1864 | {"bss", obj_coff_bss, 0}, |
||
1865 | #ifdef TE_PE |
||
1866 | /* PE provides an enhanced version of .comm with alignment. */ |
||
1867 | {"comm", obj_coff_comm, 0}, |
||
1868 | #endif /* TE_PE */ |
||
1869 | {"def", obj_coff_def, 0}, |
||
1870 | {"dim", obj_coff_dim, 0}, |
||
1871 | {"endef", obj_coff_endef, 0}, |
||
1872 | {"ident", obj_coff_ident, 0}, |
||
1873 | {"line", obj_coff_line, 0}, |
||
1874 | {"ln", obj_coff_ln, 0}, |
||
1875 | {"scl", obj_coff_scl, 0}, |
||
1876 | {"sect", obj_coff_section, 0}, |
||
1877 | {"sect.s", obj_coff_section, 0}, |
||
1878 | {"section", obj_coff_section, 0}, |
||
1879 | {"section.s", obj_coff_section, 0}, |
||
1880 | /* FIXME: We ignore the MRI short attribute. */ |
||
1881 | {"size", obj_coff_size, 0}, |
||
1882 | {"tag", obj_coff_tag, 0}, |
||
1883 | {"type", obj_coff_type, 0}, |
||
1884 | {"val", obj_coff_val, 0}, |
||
1885 | {"version", s_ignore, 0}, |
||
1886 | {"loc", obj_coff_loc, 0}, |
||
1887 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ |
||
1888 | {"weak", obj_coff_weak, 0}, |
||
1889 | #if defined TC_TIC4X |
||
1890 | /* The tic4x uses sdef instead of def. */ |
||
1891 | {"sdef", obj_coff_def, 0}, |
||
1892 | #endif |
||
1893 | #if defined(SEH_CMDS) |
||
1894 | SEH_CMDS |
||
1895 | #endif |
||
1896 | {NULL, NULL, 0} |
||
1897 | }; |
||
1898 | |||
1899 | |||
1900 | /* Support for a COFF emulation. */ |
||
1901 | |||
1902 | static void |
||
1903 | coff_pop_insert (void) |
||
1904 | { |
||
1905 | pop_insert (coff_pseudo_table); |
||
1906 | } |
||
1907 | |||
1908 | static int |
||
1909 | coff_separate_stab_sections (void) |
||
1910 | { |
||
1911 | return 1; |
||
1912 | } |
||
1913 | |||
1914 | const struct format_ops coff_format_ops = |
||
1915 | { |
||
1916 | bfd_target_coff_flavour, |
||
1917 | 0, /* dfl_leading_underscore */ |
||
1918 | 1, /* emit_section_symbols */ |
||
1919 | 0, /* begin */ |
||
1920 | c_dot_file_symbol, |
||
1921 | coff_frob_symbol, |
||
1922 | 0, /* frob_file */ |
||
1923 | 0, /* frob_file_before_adjust */ |
||
1924 | 0, /* frob_file_before_fix */ |
||
1925 | coff_frob_file_after_relocs, |
||
1926 | 0, /* s_get_size */ |
||
1927 | 0, /* s_set_size */ |
||
1928 | 0, /* s_get_align */ |
||
1929 | 0, /* s_set_align */ |
||
1930 | 0, /* s_get_other */ |
||
1931 | 0, /* s_set_other */ |
||
1932 | 0, /* s_get_desc */ |
||
1933 | 0, /* s_set_desc */ |
||
1934 | 0, /* s_get_type */ |
||
1935 | 0, /* s_set_type */ |
||
1936 | 0, /* copy_symbol_attributes */ |
||
1937 | 0, /* generate_asm_lineno */ |
||
1938 | 0, /* process_stab */ |
||
1939 | coff_separate_stab_sections, |
||
1940 | obj_coff_init_stab_section, |
||
1941 | 0, /* sec_sym_ok_for_reloc */ |
||
1942 | coff_pop_insert, |
||
1943 | 0, /* ecoff_set_ext */ |
||
1944 | coff_obj_read_begin_hook, |
||
1945 | coff_obj_symbol_new_hook, |
||
1946 | coff_obj_symbol_clone_hook, |
||
1947 | coff_adjust_symtab |
||
1948 | };><>>>=>> |