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5199 | serge | 1 | /* ldmisc.c |
2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
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3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010, 2011, 2012, 2013 |
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4 | Free Software Foundation, Inc. |
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5 | Written by Steve Chamberlain of Cygnus Support. |
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6 | |||
7 | This file is part of the GNU Binutils. |
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8 | |||
9 | This program is free software; you can redistribute it and/or modify |
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10 | it under the terms of the GNU General Public License as published by |
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11 | the Free Software Foundation; either version 3 of the License, or |
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12 | (at your option) any later version. |
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13 | |||
14 | This program is distributed in the hope that it will be useful, |
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15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | GNU General Public License for more details. |
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18 | |||
19 | You should have received a copy of the GNU General Public License |
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20 | along with this program; if not, write to the Free Software |
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21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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22 | MA 02110-1301, USA. */ |
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23 | |||
24 | #include "sysdep.h" |
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25 | #include "bfd.h" |
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26 | #include "bfdlink.h" |
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27 | #include "libiberty.h" |
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28 | #include "filenames.h" |
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29 | #include "demangle.h" |
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30 | #include |
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31 | #include "ld.h" |
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32 | #include "ldmisc.h" |
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33 | #include "ldexp.h" |
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34 | #include "ldlang.h" |
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35 | #include |
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36 | #include "ldlex.h" |
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37 | #include "ldmain.h" |
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38 | #include "ldfile.h" |
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39 | #include "elf-bfd.h" |
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40 | |||
41 | /* |
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42 | %% literal % |
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43 | %A section name from a section |
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44 | %B filename from a bfd |
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45 | %C clever filename:linenumber with function |
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46 | %D like %C, but no function name |
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47 | %E current bfd error or errno |
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48 | %F error is fatal |
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49 | %G like %D, but only function name |
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50 | %H like %C but in addition emit section+offset |
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51 | %I filename from a lang_input_statement_type |
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52 | %P print program name |
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53 | %R info about a relent |
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54 | %S print script file and linenumber from etree_type. |
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55 | %T symbol name |
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56 | %V hex bfd_vma |
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57 | %W hex bfd_vma with 0x with no leading zeros taking up 8 spaces |
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58 | %X no object output, fail return |
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59 | %d integer, like printf |
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60 | %ld long, like printf |
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61 | %lu unsigned long, like printf |
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62 | %p native (host) void* pointer, like printf |
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63 | %s arbitrary string, like printf |
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64 | %u integer, like printf |
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65 | %v hex bfd_vma, no leading zeros |
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66 | */ |
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67 | |||
68 | void |
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69 | vfinfo (FILE *fp, const char *fmt, va_list arg, bfd_boolean is_warning) |
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70 | { |
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71 | bfd_boolean fatal = FALSE; |
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72 | |||
73 | while (*fmt != '\0') |
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74 | { |
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75 | const char *str = fmt; |
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76 | while (*fmt != '%' && *fmt != '\0') |
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77 | fmt++; |
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78 | if (fmt != str) |
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79 | if (fwrite (str, 1, fmt - str, fp)) |
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80 | { |
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81 | /* Ignore. */ |
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82 | } |
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83 | |||
84 | if (*fmt == '%') |
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85 | { |
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86 | fmt++; |
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87 | switch (*fmt++) |
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88 | { |
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89 | case '%': |
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90 | /* literal % */ |
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91 | putc ('%', fp); |
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92 | break; |
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93 | |||
94 | case 'X': |
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95 | /* no object output, fail return */ |
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96 | config.make_executable = FALSE; |
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97 | break; |
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98 | |||
99 | case 'V': |
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100 | /* hex bfd_vma */ |
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101 | { |
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102 | bfd_vma value = va_arg (arg, bfd_vma); |
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103 | fprintf_vma (fp, value); |
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104 | } |
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105 | break; |
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106 | |||
107 | case 'v': |
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108 | /* hex bfd_vma, no leading zeros */ |
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109 | { |
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110 | char buf[100]; |
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111 | char *p = buf; |
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112 | bfd_vma value = va_arg (arg, bfd_vma); |
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113 | sprintf_vma (p, value); |
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114 | while (*p == '0') |
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115 | p++; |
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116 | if (!*p) |
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117 | p--; |
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118 | fputs (p, fp); |
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119 | } |
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120 | break; |
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121 | |||
122 | case 'W': |
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123 | /* hex bfd_vma with 0x with no leading zeroes taking up |
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124 | 8 spaces. */ |
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125 | { |
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126 | char buf[100]; |
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127 | bfd_vma value; |
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128 | char *p; |
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129 | int len; |
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130 | |||
131 | value = va_arg (arg, bfd_vma); |
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132 | sprintf_vma (buf, value); |
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133 | for (p = buf; *p == '0'; ++p) |
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134 | ; |
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135 | if (*p == '\0') |
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136 | --p; |
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137 | len = strlen (p); |
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138 | while (len < 8) |
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139 | { |
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140 | putc (' ', fp); |
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141 | ++len; |
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142 | } |
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143 | fprintf (fp, "0x%s", p); |
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144 | } |
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145 | break; |
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146 | |||
147 | case 'T': |
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148 | /* Symbol name. */ |
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149 | { |
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150 | const char *name = va_arg (arg, const char *); |
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151 | |||
152 | if (name == NULL || *name == 0) |
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153 | { |
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154 | fprintf (fp, _("no symbol")); |
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155 | break; |
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156 | } |
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157 | else if (demangling) |
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158 | { |
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159 | char *demangled; |
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160 | |||
161 | demangled = bfd_demangle (link_info.output_bfd, name, |
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162 | DMGL_ANSI | DMGL_PARAMS); |
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163 | if (demangled != NULL) |
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164 | { |
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165 | fprintf (fp, "%s", demangled); |
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166 | free (demangled); |
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167 | break; |
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168 | } |
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169 | } |
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170 | fprintf (fp, "%s", name); |
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171 | } |
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172 | break; |
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173 | |||
174 | case 'A': |
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175 | /* section name from a section */ |
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176 | { |
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177 | asection *sec = va_arg (arg, asection *); |
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178 | bfd *abfd = sec->owner; |
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179 | const char *group = NULL; |
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180 | struct coff_comdat_info *ci; |
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181 | |||
182 | fprintf (fp, "%s", sec->name); |
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183 | if (abfd != NULL |
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184 | && bfd_get_flavour (abfd) == bfd_target_elf_flavour |
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185 | && elf_next_in_group (sec) != NULL |
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186 | && (sec->flags & SEC_GROUP) == 0) |
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187 | group = elf_group_name (sec); |
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188 | else if (abfd != NULL |
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189 | && bfd_get_flavour (abfd) == bfd_target_coff_flavour |
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190 | && (ci = bfd_coff_get_comdat_section (sec->owner, |
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191 | sec)) != NULL) |
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192 | group = ci->name; |
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193 | if (group != NULL) |
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194 | fprintf (fp, "[%s]", group); |
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195 | } |
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196 | break; |
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197 | |||
198 | case 'B': |
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199 | /* filename from a bfd */ |
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200 | { |
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201 | bfd *abfd = va_arg (arg, bfd *); |
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202 | |||
203 | if (abfd == NULL) |
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204 | fprintf (fp, "%s generated", program_name); |
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205 | else if (abfd->my_archive) |
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206 | fprintf (fp, "%s(%s)", abfd->my_archive->filename, |
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207 | abfd->filename); |
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208 | else |
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209 | fprintf (fp, "%s", abfd->filename); |
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210 | } |
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211 | break; |
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212 | |||
213 | case 'F': |
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214 | /* Error is fatal. */ |
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215 | fatal = TRUE; |
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216 | break; |
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217 | |||
218 | case 'P': |
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219 | /* Print program name. */ |
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220 | fprintf (fp, "%s", program_name); |
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221 | break; |
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222 | |||
223 | case 'E': |
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224 | /* current bfd error or errno */ |
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225 | fprintf (fp, "%s", bfd_errmsg (bfd_get_error ())); |
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226 | break; |
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227 | |||
228 | case 'I': |
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229 | /* filename from a lang_input_statement_type */ |
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230 | { |
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231 | lang_input_statement_type *i; |
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232 | |||
233 | i = va_arg (arg, lang_input_statement_type *); |
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234 | if (bfd_my_archive (i->the_bfd) != NULL) |
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235 | fprintf (fp, "(%s)", |
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236 | bfd_get_filename (bfd_my_archive (i->the_bfd))); |
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237 | fprintf (fp, "%s", i->local_sym_name); |
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238 | if (bfd_my_archive (i->the_bfd) == NULL |
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239 | && filename_cmp (i->local_sym_name, i->filename) != 0) |
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240 | fprintf (fp, " (%s)", i->filename); |
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241 | } |
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242 | break; |
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243 | |||
244 | case 'S': |
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245 | /* Print script file and linenumber. */ |
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246 | { |
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247 | etree_type node; |
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248 | etree_type *tp = va_arg (arg, etree_type *); |
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249 | |||
250 | if (tp == NULL) |
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251 | { |
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252 | tp = &node; |
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253 | tp->type.filename = ldlex_filename (); |
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254 | tp->type.lineno = lineno; |
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255 | } |
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256 | if (tp->type.filename != NULL) |
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257 | fprintf (fp, "%s:%u", tp->type.filename, tp->type.lineno); |
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258 | } |
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259 | break; |
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260 | |||
261 | case 'R': |
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262 | /* Print all that's interesting about a relent. */ |
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263 | { |
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264 | arelent *relent = va_arg (arg, arelent *); |
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265 | |||
266 | lfinfo (fp, "%s+0x%v (type %s)", |
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267 | (*(relent->sym_ptr_ptr))->name, |
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268 | relent->addend, |
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269 | relent->howto->name); |
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270 | } |
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271 | break; |
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272 | |||
273 | case 'C': |
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274 | case 'D': |
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275 | case 'G': |
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276 | case 'H': |
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277 | /* Clever filename:linenumber with function name if possible. |
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278 | The arguments are a BFD, a section, and an offset. */ |
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279 | { |
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280 | static bfd *last_bfd; |
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281 | static char *last_file = NULL; |
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282 | static char *last_function = NULL; |
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283 | bfd *abfd; |
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284 | asection *section; |
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285 | bfd_vma offset; |
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286 | asymbol **asymbols = NULL; |
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287 | const char *filename; |
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288 | const char *functionname; |
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289 | unsigned int linenumber; |
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290 | bfd_boolean discard_last; |
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291 | bfd_boolean done; |
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292 | |||
293 | abfd = va_arg (arg, bfd *); |
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294 | section = va_arg (arg, asection *); |
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295 | offset = va_arg (arg, bfd_vma); |
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296 | |||
297 | if (abfd != NULL) |
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298 | { |
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299 | if (!bfd_generic_link_read_symbols (abfd)) |
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300 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); |
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301 | |||
302 | asymbols = bfd_get_outsymbols (abfd); |
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303 | } |
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304 | |||
305 | /* The GNU Coding Standard requires that error messages |
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306 | be of the form: |
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307 | |||
308 | source-file-name:lineno: message |
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309 | |||
310 | We do not always have a line number available so if |
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311 | we cannot find them we print out the section name and |
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312 | offset instead. */ |
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313 | discard_last = TRUE; |
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314 | if (abfd != NULL |
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315 | && bfd_find_nearest_line (abfd, section, asymbols, offset, |
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316 | &filename, &functionname, |
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317 | &linenumber)) |
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318 | { |
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319 | if (functionname != NULL |
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320 | && (fmt[-1] == 'C' || fmt[-1] == 'H')) |
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321 | { |
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322 | /* Detect the case where we are printing out a |
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323 | message for the same function as the last |
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324 | call to vinfo ("%C"). In this situation do |
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325 | not print out the ABFD filename or the |
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326 | function name again. Note - we do still |
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327 | print out the source filename, as this will |
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328 | allow programs that parse the linker's output |
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329 | (eg emacs) to correctly locate multiple |
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330 | errors in the same source file. */ |
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331 | if (last_bfd == NULL |
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332 | || last_file == NULL |
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333 | || last_function == NULL |
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334 | || last_bfd != abfd |
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335 | || (filename != NULL |
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336 | && filename_cmp (last_file, filename) != 0) |
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337 | || strcmp (last_function, functionname) != 0) |
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338 | { |
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339 | lfinfo (fp, _("%B: In function `%T':\n"), |
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340 | abfd, functionname); |
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341 | |||
342 | last_bfd = abfd; |
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343 | if (last_file != NULL) |
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344 | free (last_file); |
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345 | last_file = NULL; |
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346 | if (filename) |
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347 | last_file = xstrdup (filename); |
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348 | if (last_function != NULL) |
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349 | free (last_function); |
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350 | last_function = xstrdup (functionname); |
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351 | } |
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352 | discard_last = FALSE; |
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353 | } |
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354 | else |
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355 | lfinfo (fp, "%B:", abfd); |
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356 | |||
357 | if (filename != NULL) |
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358 | fprintf (fp, "%s:", filename); |
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359 | |||
360 | done = fmt[-1] != 'H'; |
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361 | if (functionname != NULL && fmt[-1] == 'G') |
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362 | lfinfo (fp, "%T", functionname); |
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363 | else if (filename != NULL && linenumber != 0) |
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364 | fprintf (fp, "%u%s", linenumber, done ? "" : ":"); |
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365 | else |
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366 | done = FALSE; |
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367 | } |
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368 | else |
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369 | { |
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370 | lfinfo (fp, "%B:", abfd); |
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371 | done = FALSE; |
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372 | } |
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373 | if (!done) |
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374 | lfinfo (fp, "(%A+0x%v)", section, offset); |
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375 | |||
376 | if (discard_last) |
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377 | { |
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378 | last_bfd = NULL; |
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379 | if (last_file != NULL) |
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380 | { |
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381 | free (last_file); |
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382 | last_file = NULL; |
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383 | } |
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384 | if (last_function != NULL) |
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385 | { |
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386 | free (last_function); |
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387 | last_function = NULL; |
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388 | } |
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389 | } |
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390 | } |
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391 | break; |
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392 | |||
393 | case 'p': |
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394 | /* native (host) void* pointer, like printf */ |
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395 | fprintf (fp, "%p", va_arg (arg, void *)); |
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396 | break; |
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397 | |||
398 | case 's': |
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399 | /* arbitrary string, like printf */ |
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400 | fprintf (fp, "%s", va_arg (arg, char *)); |
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401 | break; |
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402 | |||
403 | case 'd': |
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404 | /* integer, like printf */ |
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405 | fprintf (fp, "%d", va_arg (arg, int)); |
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406 | break; |
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407 | |||
408 | case 'u': |
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409 | /* unsigned integer, like printf */ |
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410 | fprintf (fp, "%u", va_arg (arg, unsigned int)); |
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411 | break; |
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412 | |||
413 | case 'l': |
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414 | if (*fmt == 'd') |
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415 | { |
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416 | fprintf (fp, "%ld", va_arg (arg, long)); |
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417 | ++fmt; |
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418 | break; |
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419 | } |
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420 | else if (*fmt == 'u') |
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421 | { |
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422 | fprintf (fp, "%lu", va_arg (arg, unsigned long)); |
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423 | ++fmt; |
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424 | break; |
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425 | } |
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426 | /* Fall thru */ |
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427 | |||
428 | default: |
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429 | fprintf (fp, "%%%c", fmt[-1]); |
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430 | break; |
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431 | } |
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432 | } |
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433 | } |
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434 | |||
435 | if (is_warning && config.fatal_warnings) |
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436 | config.make_executable = FALSE; |
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437 | |||
438 | if (fatal) |
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439 | xexit (1); |
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440 | } |
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441 | |||
442 | /* Format info message and print on stdout. */ |
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443 | |||
444 | /* (You would think this should be called just "info", but then you |
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445 | would be hosed by LynxOS, which defines that name in its libc.) */ |
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446 | |||
447 | void |
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448 | info_msg (const char *fmt, ...) |
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449 | { |
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450 | va_list arg; |
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451 | |||
452 | va_start (arg, fmt); |
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453 | vfinfo (stdout, fmt, arg, FALSE); |
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454 | va_end (arg); |
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455 | } |
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456 | |||
457 | /* ('e' for error.) Format info message and print on stderr. */ |
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458 | |||
459 | void |
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460 | einfo (const char *fmt, ...) |
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461 | { |
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462 | va_list arg; |
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463 | |||
464 | fflush (stdout); |
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465 | va_start (arg, fmt); |
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466 | vfinfo (stderr, fmt, arg, TRUE); |
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467 | va_end (arg); |
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468 | fflush (stderr); |
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469 | } |
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470 | |||
471 | void |
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472 | info_assert (const char *file, unsigned int line) |
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473 | { |
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474 | einfo (_("%F%P: internal error %s %d\n"), file, line); |
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475 | } |
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476 | |||
477 | /* ('m' for map) Format info message and print on map. */ |
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478 | |||
479 | void |
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480 | minfo (const char *fmt, ...) |
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481 | { |
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482 | if (config.map_file != NULL) |
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483 | { |
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484 | va_list arg; |
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485 | |||
486 | va_start (arg, fmt); |
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487 | vfinfo (config.map_file, fmt, arg, FALSE); |
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488 | va_end (arg); |
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489 | } |
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490 | } |
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491 | |||
492 | void |
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493 | lfinfo (FILE *file, const char *fmt, ...) |
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494 | { |
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495 | va_list arg; |
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496 | |||
497 | va_start (arg, fmt); |
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498 | vfinfo (file, fmt, arg, FALSE); |
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499 | va_end (arg); |
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500 | } |
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501 | |||
502 | /* Functions to print the link map. */ |
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503 | |||
504 | void |
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505 | print_space (void) |
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506 | { |
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507 | fprintf (config.map_file, " "); |
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508 | } |
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509 | |||
510 | void |
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511 | print_nl (void) |
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512 | { |
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513 | fprintf (config.map_file, "\n"); |
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514 | } |
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515 | |||
516 | /* A more or less friendly abort message. In ld.h abort is defined to |
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517 | call this function. */ |
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518 | |||
519 | void |
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520 | ld_abort (const char *file, int line, const char *fn) |
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521 | { |
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522 | if (fn != NULL) |
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523 | einfo (_("%P: internal error: aborting at %s line %d in %s\n"), |
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524 | file, line, fn); |
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525 | else |
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526 | einfo (_("%P: internal error: aborting at %s line %d\n"), |
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527 | file, line); |
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528 | einfo (_("%P%F: please report this bug\n")); |
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529 | xexit (1); |
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530 | }> |