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annotate lwlink/lwlink.c @ 273:1409debcb1a0

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Fix crash on listing when nested noexpand macros are used Macros flagged noexpand were causing a segfault during listing. The problem was incorrect accounting for nesting levels for noexpand macros causing the listing handler to fall off the end of the program in certain circumstances and in other circumstances it would fail to suppress expansion. Both the segfault in the case of misbehaviour and the misbhaviour itself are corrected with this update. If you do not use nested noexpand macros, this bug has no effect.
author William Astle <lost@l-w.ca>
date Sat, 25 May 2013 13:35:46 -0600
parents c6a38fd8bd33
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
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1 /*
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2 lwlink.c
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3 Copyright © 2009 William Astle
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4
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5 This file is part of LWLINK.
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6
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7 LWLINK is free software: you can redistribute it and/or modify it under the
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8 terms of the GNU General Public License as published by the Free Software
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9 Foundation, either version 3 of the License, or (at your option) any later
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10 version.
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11
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12 This program is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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15 more details.
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16
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17 You should have received a copy of the GNU General Public License along with
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18 this program. If not, see <http://www.gnu.org/licenses/>.
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22 */
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23
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24 #define __lwlink_c_seen__
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25
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26 #include <errno.h>
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27 #include <stdio.h>
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28 #include <stdlib.h>
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29 #include <string.h>
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30
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31 #include <lw_alloc.h>
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32 #include <lw_string.h>
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33
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34 #include "lwlink.h"
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35
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36 int debug_level = 0;
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37 int outformat = OUTPUT_DECB;
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38 char *outfile = NULL;
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39 char *scriptfile = NULL;
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40 int symerr = 0;
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41 char *map_file = NULL;
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42
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43 fileinfo_t **inputfiles = NULL;
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44 int ninputfiles = 0;
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45
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46 int nlibdirs = 0;
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47 char **libdirs = NULL;
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48
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49 int nscriptls = 0;
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50 char **scriptls = NULL;
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51
179
606123758641 Added --sysroot support to lwlink and the ld wrapper script
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52 char *sysroot = "/";
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53
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54 char *entrysym = NULL;
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55
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56 void add_input_file(char *fn)
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57 {
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58 inputfiles = lw_realloc(inputfiles, sizeof(fileinfo_t *) * (ninputfiles + 1));
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59 inputfiles[ninputfiles] = lw_alloc(sizeof(fileinfo_t));
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60 memset(inputfiles[ninputfiles], 0, sizeof(fileinfo_t));
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61 inputfiles[ninputfiles] -> forced = 1;
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62 inputfiles[ninputfiles++] -> filename = lw_strdup(fn);
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63 }
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64
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65 void add_input_library(char *libname)
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66 {
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67 inputfiles = lw_realloc(inputfiles, sizeof(fileinfo_t *) * (ninputfiles + 1));
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68 inputfiles[ninputfiles] = lw_alloc(sizeof(fileinfo_t));
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69 memset(inputfiles[ninputfiles], 0, sizeof(fileinfo_t));
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70 inputfiles[ninputfiles] -> islib = 1;
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71 inputfiles[ninputfiles] -> forced = 0;
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72 inputfiles[ninputfiles++] -> filename = lw_strdup(libname);
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73 }
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74
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75 void add_library_search(char *libdir)
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76 {
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77 libdirs = lw_realloc(libdirs, sizeof(char*) * (nlibdirs + 1));
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78 libdirs[nlibdirs] = lw_strdup(libdir);
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79 nlibdirs++;
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80 }
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81
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82 void add_section_base(char *sectspec)
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83 {
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84 char *base;
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85 int baseaddr;
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86 char *t;
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87 int l;
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88
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89 base = strchr(sectspec, '=');
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90 if (!base)
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91 {
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92 l = strlen(sectspec);
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93 baseaddr = 0;
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94 }
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95 else
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96 {
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97 baseaddr = strtol(base + 1, NULL, 16);
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98 l = base - sectspec;
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99 *base = '\0';
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100 }
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101 baseaddr = baseaddr & 0xffff;
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102
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103 t = lw_alloc(l + 25);
0
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104 sprintf(t, "section %s load %04X", sectspec, baseaddr);
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105 if (base)
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106 *base = '=';
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107
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108 scriptls = lw_realloc(scriptls, sizeof(char *) * (nscriptls + 1));
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109 scriptls[nscriptls++] = t;
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110 }
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111
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112 char *sanitize_symbol(char *symbol)
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113 {
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114 static char symbuf[2048];
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115 char *sym = symbol;
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116 char *tp = symbuf;
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117
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118 for (; *sym; sym++)
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119 {
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120 int c1 = *sym;
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121 if (c1 == '\\')
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122 {
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123 *tp++ = '\\';
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124 *tp++ = '\\';
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125 continue;
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126 }
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127 if (c1 < 32 || c1 > 126)
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128 {
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129 int c;
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130 *tp++ = '\\';
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131 c = c1 >> 4;
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132 c += 48;
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133 if (c > 57)
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134 c += 7;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
135 *tp++ = c;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
136 c = c1 & 15;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
137 c += 48;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
138 if (c > 57)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
139 c += 7;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
140 *tp++ = c;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
141 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
142 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
143 *tp++ = c1;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
144 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
145 *tp = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
146 return symbuf;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
147 }