annotate src/unexalpha.c @ 5655:b7ae5f44b950

Remove some redundant functions, change others to labels, lisp/ lisp/ChangeLog addition: 2012-05-05 Aidan Kehoe <kehoea@parhasard.net> Remove some redundant functions; turn other utility functions into labels, avoiding visibility in the global namespace, and reducing the size of the dumped binary. * auto-save.el (auto-save-unhex): Removed. * auto-save.el (auto-save-unescape-name): Use #'string-to-number instead of #'auto-save-unhex. * files.el (save-some-buffers): * files.el (save-some-buffers-1): Changed to a label. * files.el (not-modified): * gui.el (make-gui-button): * gui.el (gui-button-action): Changed to a label. * gui.el (insert-gui-button): * indent.el (indent-for-tab-command): * indent.el (insert-tab): Changed to a label. * indent.el (indent-rigidly): * isearch-mode.el: * isearch-mode.el (isearch-ring-adjust): * isearch-mode.el (isearch-ring-adjust1): Changed to a label. * isearch-mode.el (isearch-pre-command-hook): * isearch-mode.el (isearch-maybe-frob-keyboard-macros): Changed to a label. * isearch-mode.el (isearch-highlight): * isearch-mode.el (isearch-make-extent): Changed to a label. * itimer.el: * itimer.el (itimer-decrement): Removed, replaced uses with decf. * itimer.el (itimer-increment): Removed, replaced uses with incf. * itimer.el (itimer-signum): Removed, replaced uses with minusp, plusp. * itimer.el (itimer-name): * itimer.el (check-itimer): Removed, replaced with #'check-type calls. * itimer.el (itimer-value): * itimer.el (check-itimer-coerce-string): Removed. * itimer.el (itimer-restart): * itimer.el (itimer-function): * itimer.el (check-nonnegative-number): Removed. * itimer.el (itimer-uses-arguments): * itimer.el (check-string): Removed. * itimer.el (itimer-function-arguments): * itimer.el (itimer-recorded-run-time): * itimer.el (set-itimer-name): * itimer.el (set-itimer-value): * itimer.el (set-itimer-value-internal): * itimer.el (set-itimer-restart): * itimer.el (set-itimer-function): * itimer.el (set-itimer-is-idle): * itimer.el (set-itimer-recorded-run-time): * itimer.el (get-itimer): * itimer.el (delete-itimer): * itimer.el (start-itimer): * itimer.el (activate-itimer): * itimer.el (itimer-edit-set-field): * itimer.el (itimer-edit-next-field): * itimer.el (itimer-edit-previous-field): Use incf, decf, plusp, minusp and the more general argument type checking macros. * lib-complete.el: * lib-complete.el (lib-complete:better-root): Changed to a label. * lib-complete.el (lib-complete:get-completion-table): Changed to a label. * lib-complete.el (read-library-internal): Include labels. * lib-complete.el (lib-complete:cache-completions): Changed to a label. * minibuf.el (read-buffer): Use #'set-difference, don't reinvent it. * newcomment.el (comment-padright): Use a label instead of repeating a lambda expression. * packages.el (package-get-key): * packages.el (package-get-key-1): Removed, use #'getf instead. * simple.el (kill-backward-chars): Removed; this isn't used. * simple.el (what-cursor-position): (lambda (arg) (format "%S" arg) -> #'prin1-to-string. * simple.el (debug-print-1): Renamed to #'debug-print. * simple.el (debug-print): Removed, #'debug-print-1 was equivalent. * subr.el (integer-to-bit-vector): check-nonnegative-number no longer available. * widget.el (define-widget): * widget.el (define-widget-keywords): Removed, this was long obsolete.
author Aidan Kehoe <kehoea@parhasard.net>
date Sat, 05 May 2012 18:42:00 +0100
parents 308d34e9f07d
children
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1 /* Unexec for DEC alpha. schoepf@sc.ZIB-Berlin.DE (Rainer Schoepf).
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2
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3 Copyright (C) 1994 Free Software Foundation, Inc.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software: you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation, either version 3 of the License, or (at your
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10 option) any later version.
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12 XEmacs 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
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15 for more details.
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */
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19
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20 /* Synched up with: FSF 19.31. */
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22
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23 #include <config.h>
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24 #include <stdlib.h>
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25 #include <string.h>
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26 #include <unistd.h>
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27 #include <sys/types.h>
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28 #include <sys/file.h>
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29 #include <sys/stat.h>
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30 #include <sys/mman.h>
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31 #include <stdio.h>
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32 #include <errno.h>
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33 #include <varargs.h>
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34 #include <filehdr.h>
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35 #include <aouthdr.h>
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36 #include <scnhdr.h>
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37 #include <syms.h>
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38 #include "compiler.h"
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39
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40 static void fatal_unexec (char *, char *);
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41 static void mark_x (char *);
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42
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43 #define READ(_fd, _buffer, _size, _error_message, _error_arg) \
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44 errno = EEOF; \
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45 if (read (_fd, _buffer, _size) != _size) \
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46 fatal_unexec (_error_message, _error_arg);
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47
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48 #define WRITE(_fd, _buffer, _size, _error_message, _error_arg) \
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49 if (write (_fd, _buffer, _size) != _size) \
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50 fatal_unexec (_error_message, _error_arg);
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51
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52 #define SEEK(_fd, _position, _error_message, _error_arg) \
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53 errno = EEOF; \
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54 if (lseek (_fd, _position, L_SET) != _position) \
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55 fatal_unexec (_error_message, _error_arg);
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56
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57 #define EEOF -1
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58
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59 static struct scnhdr *text_section;
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60 static struct scnhdr *init_section;
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61 static struct scnhdr *finit_section;
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62 static struct scnhdr *rdata_section;
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63 static struct scnhdr *rconst_section;
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64 static struct scnhdr *data_section;
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65 static struct scnhdr *pdata_section;
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66 static struct scnhdr *xdata_section;
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67 static struct scnhdr *got_section;
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68 static struct scnhdr *lit8_section;
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69 static struct scnhdr *lit4_section;
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70 static struct scnhdr *sdata_section;
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71 static struct scnhdr *sbss_section;
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72 static struct scnhdr *bss_section;
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73
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74 static unsigned long Brk;
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75
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76 struct headers {
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77 struct filehdr fhdr;
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78 struct aouthdr aout;
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79 struct scnhdr section[_MIPS_NSCNS_MAX];
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80 };
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81
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82
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83 /* Define name of label for entry point for the dumped executable. */
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84
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85 #ifndef DEFAULT_ENTRY_ADDRESS
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86 #define DEFAULT_ENTRY_ADDRESS __start
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87 #endif
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88 EXTERN_C int DEFAULT_ENTRY_ADDRESS (void);
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89
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91 int
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92 unexec (char *new_name, char *a_name,
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93 unsigned long data_start,
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94 unsigned long UNUSED (bss_start),
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95 unsigned long entry_address)
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96 {
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97 int new_, old;
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98 char * oldptr;
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99 struct headers ohdr, nhdr;
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100 struct stat stat;
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101 long pagesize, brk;
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102 long newsyms, symrel;
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103 int i;
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104 long vaddr, scnptr;
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105 #define BUFSIZE 8192
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106 char buffer[BUFSIZE];
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107
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108 if ((old = open (a_name, O_RDONLY)) < 0)
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109 fatal_unexec ("opening %s", a_name);
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110
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111 new_ = creat (new_name, 0666);
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112 if (new_ < 0) fatal_unexec ("creating %s", new_name);
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113
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114 if ((fstat (old, &stat) == -1))
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115 fatal_unexec ("fstat %s", a_name);
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116
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117 oldptr = (char *)mmap (0, stat.st_size, PROT_READ, MAP_FILE|MAP_SHARED, old, 0);
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118
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119 if (oldptr == (char *)-1)
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120 fatal_unexec ("mmap %s", a_name);
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121
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122 close (old);
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123
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124 /* This is a copy of the a.out header of the original executable */
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125
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126 ohdr = (*(struct headers *)oldptr);
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127
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128 /* This is where we build the new header from the in-memory copy */
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129
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130 nhdr = *((struct headers *)TEXT_START);
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131
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132 /* First do some consistency checks */
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133
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134 if (nhdr.fhdr.f_magic != ALPHAMAGIC
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135 && nhdr.fhdr.f_magic != ALPHAUMAGIC)
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136 {
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137 fprintf (stderr, "unexec: input file magic number is %x, not %x or %x.\n",
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138 nhdr.fhdr.f_magic, ALPHAMAGIC, ALPHAUMAGIC);
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139 exit (1);
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140 }
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141
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142 if (nhdr.fhdr.f_opthdr != sizeof (nhdr.aout))
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143 {
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144 fprintf (stderr, "unexec: input a.out header is %d bytes, not %ld.\n",
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145 nhdr.fhdr.f_opthdr, (long) (sizeof (nhdr.aout)));
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146 exit (1);
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147 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
148 if (nhdr.aout.magic != ZMAGIC)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
149 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
150 fprintf (stderr, "unexec: input file a.out magic number is %o, not %o.\n",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
151 nhdr.aout.magic, ZMAGIC);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
152 exit (1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
153 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
154
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
155
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
156 /* Now check the existence of certain header section and grab
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
157 their addresses. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
158
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
159 #define CHECK_SCNHDR(ptr, name, flags) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
160 ptr = NULL; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
161 for (i = 0; i < nhdr.fhdr.f_nscns && !ptr; i++) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
162 if (strcmp (nhdr.section[i].s_name, name) == 0) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
163 { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
164 if (nhdr.section[i].s_flags != flags) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
165 fprintf (stderr, "unexec: %x flags (%x expected) in %s section.\n", \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
166 nhdr.section[i].s_flags, flags, name); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
167 ptr = nhdr.section + i; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
168 } \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
169
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
170 CHECK_SCNHDR (text_section, _TEXT, STYP_TEXT);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
171 CHECK_SCNHDR (init_section, _INIT, STYP_INIT);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
172 #ifdef _FINI
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
173 CHECK_SCNHDR (finit_section, _FINI, STYP_FINI);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
174 #endif /* _FINI */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
175 CHECK_SCNHDR (rdata_section, _RDATA, STYP_RDATA);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
176 #ifdef _RCONST
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
177 CHECK_SCNHDR (rconst_section, _RCONST, STYP_RCONST);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
178 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
179 #ifdef _PDATA
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
180 CHECK_SCNHDR (pdata_section, _PDATA, STYP_PDATA);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
181 #endif /* _PDATA */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
182 #ifdef _GOT
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
183 CHECK_SCNHDR (got_section, _GOT, STYP_GOT);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
184 #endif /* _GOT */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
185 CHECK_SCNHDR (data_section, _DATA, STYP_DATA);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
186 #ifdef _XDATA
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
187 CHECK_SCNHDR (xdata_section, _XDATA, STYP_XDATA);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
188 #endif /* _XDATA */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
189 #ifdef _LIT8
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
190 CHECK_SCNHDR (lit8_section, _LIT8, STYP_LIT8);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
191 CHECK_SCNHDR (lit4_section, _LIT4, STYP_LIT4);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
192 #endif /* _LIT8 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
193 CHECK_SCNHDR (sdata_section, _SDATA, STYP_SDATA);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
194 CHECK_SCNHDR (sbss_section, _SBSS, STYP_SBSS);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
195 CHECK_SCNHDR (bss_section, _BSS, STYP_BSS);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
196
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
197
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
198 pagesize = getpagesize ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
199 brk = (((long) (sbrk (0))) + pagesize - 1) & (-pagesize);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
200
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
201 /* Remember the current break */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
202
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
203 Brk = brk;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
204
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
205 nhdr.aout.dsize = brk - DATA_START;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
206 nhdr.aout.bsize = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
207 if (entry_address == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
208 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
209 nhdr.aout.entry = (unsigned long)DEFAULT_ENTRY_ADDRESS;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
210 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
211 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
212 nhdr.aout.entry = entry_address;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
213
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
214 nhdr.aout.bss_start = nhdr.aout.data_start + nhdr.aout.dsize;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
215
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
216 if (rdata_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
217 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
218 rdata_section->s_size = data_start - DATA_START;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
219
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
220 /* Adjust start and virtual addresses of rdata_section, too. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
221 rdata_section->s_vaddr = DATA_START;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
222 rdata_section->s_paddr = DATA_START;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
223 rdata_section->s_scnptr = text_section->s_scnptr + nhdr.aout.tsize;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
224 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
225
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
226 data_section->s_vaddr = data_start;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
227 data_section->s_paddr = data_start;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
228 data_section->s_size = brk - data_start;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
229
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
230 if (rdata_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
231 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
232 data_section->s_scnptr = rdata_section->s_scnptr + rdata_section->s_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
233 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
234
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
235 vaddr = data_section->s_vaddr + data_section->s_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
236 scnptr = data_section->s_scnptr + data_section->s_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
237 if (lit8_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
238 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
239 lit8_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
240 lit8_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
241 lit8_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
242 lit8_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
243 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
244 if (lit4_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
245 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
246 lit4_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
247 lit4_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
248 lit4_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
249 lit4_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
250 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
251 if (sdata_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
252 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
253 sdata_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
254 sdata_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
255 sdata_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
256 sdata_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
257 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
258 #ifdef _XDATA
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
259 if (xdata_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
260 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
261 xdata_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
262 xdata_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
263 xdata_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
264 xdata_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
265 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
266 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
267 #ifdef _GOT
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
268 if (got_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
269 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
270 got_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
271 got_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
272 got_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
273 got_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
274 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
275 #endif /*_GOT */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
276 if (sbss_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
277 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
278 sbss_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
279 sbss_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
280 sbss_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
281 sbss_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
282 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
283 if (bss_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
284 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
285 bss_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
286 bss_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
287 bss_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
288 bss_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
289 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
290
3025
facf3239ba30 [xemacs-hg @ 2005-10-25 11:16:19 by ben]
ben
parents: 2286
diff changeset
291 WRITE (new_, (char *)TEXT_START, nhdr.aout.tsize,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
292 "writing text section to %s", new_name);
3025
facf3239ba30 [xemacs-hg @ 2005-10-25 11:16:19 by ben]
ben
parents: 2286
diff changeset
293 WRITE (new_, (char *)DATA_START, nhdr.aout.dsize,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
294 "writing data section to %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
295
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
296
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
297 /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
298 * Construct new symbol table header
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
299 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
300
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
301 memcpy (buffer, oldptr + nhdr.fhdr.f_symptr, cbHDRR);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
302
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
303 #define symhdr ((pHDRR)buffer)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
304 newsyms = nhdr.aout.tsize + nhdr.aout.dsize;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
305 symrel = newsyms - nhdr.fhdr.f_symptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
306 nhdr.fhdr.f_symptr = newsyms;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
307 symhdr->cbLineOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
308 symhdr->cbDnOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
309 symhdr->cbPdOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
310 symhdr->cbSymOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
311 symhdr->cbOptOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
312 symhdr->cbAuxOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
313 symhdr->cbSsOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
314 symhdr->cbSsExtOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
315 symhdr->cbFdOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
316 symhdr->cbRfdOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
317 symhdr->cbExtOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
318
3025
facf3239ba30 [xemacs-hg @ 2005-10-25 11:16:19 by ben]
ben
parents: 2286
diff changeset
319 WRITE (new_, buffer, cbHDRR, "writing symbol table header of %s", new_name);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
320
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
321 /*
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322 * Copy the symbol table and line numbers
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323 */
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324 WRITE (new_, oldptr + ohdr.fhdr.f_symptr + cbHDRR,
428
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325 stat.st_size - ohdr.fhdr.f_symptr - cbHDRR,
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326 "writing symbol table of %s", new_name);
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327
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328 #if 0
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329
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330 /* Not needed for now */
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331
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332 update_dynamic_symbols (oldptr, new_name, new_, newsyms,
428
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333 ((pHDRR) (oldptr + ohdr.fhdr.f_symptr))->issExtMax,
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334 ((pHDRR) (oldptr + ohdr.fhdr.f_symptr))->cbExtOffset,
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335 ((pHDRR) (oldptr + ohdr.fhdr.f_symptr))->cbSsExtOffset);
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336
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337 #endif
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338
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339 #undef symhdr
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340
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341 SEEK (new_, 0, "seeking to start of header in %s", new_name);
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342 WRITE (new_, &nhdr, sizeof (nhdr),
428
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343 "writing header of %s", new_name);
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344
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345 close (old);
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346 close (new_);
428
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347 mark_x (new_name);
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348 return 0;
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349 }
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350
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351
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352 #if 0
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353
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354 /* Not needed for now */
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355
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356 /* The following function updates the values of some symbols
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357 that are used by the dynamic loader:
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358
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359 _edata
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360 _end
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361
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362 */
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363
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364 int
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365 update_dynamic_symbols (
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366 char *old, /* Pointer to old executable */
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367 char *new_name, /* Name of new executable */
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368 int new_, /* File descriptor for new executable */
428
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369 long newsyms, /* Offset of Symbol table in new executable */
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370 int nsyms, /* Number of symbol table entries */
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371 long symoff, /* Offset of External Symbols in old file */
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372 long stroff) /* Offset of string table in old file */
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373 {
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374 long i;
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375 int found = 0;
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376 EXTR n_end, n_edata;
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377
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378 /* We go through the symbol table entries until we have found the two
3ecd8885ac67 Import from CVS: tag r21-2-22
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379 symbols. */
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380
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381 /* cbEXTR is the size of an external symbol table entry */
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382
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383 for (i = 0; i < nsyms && found < 2; i += cbEXTR)
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384 {
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385 REGISTER pEXTR x = (pEXTR) (old + symoff + i);
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386 char *s;
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387
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388 s = old + stroff + x->asym.iss; /* name of the symbol */
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389
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390 if (!strcmp(s,"_edata"))
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391 {
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392 found++;
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393 memcpy (&n_edata, x, cbEXTR);
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394 n_edata.asym.value = Brk;
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395 SEEK (new_, newsyms + cbHDRR + i,
428
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396 "seeking to symbol _edata in %s", new_name);
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diff changeset
397 WRITE (new_, &n_edata, cbEXTR,
428
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398 "writing symbol table entry for _edata into %s", new_name);
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399 }
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400 else if (!strcmp(s,"_end"))
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parents:
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401 {
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diff changeset
402 found++;
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diff changeset
403 memcpy (&n_end, x, cbEXTR);
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diff changeset
404 n_end.asym.value = Brk;
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405 SEEK (new_, newsyms + cbHDRR + i,
428
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diff changeset
406 "seeking to symbol _end in %s", new_name);
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diff changeset
407 WRITE (new_, &n_end, cbEXTR,
428
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408 "writing symbol table entry for _end into %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
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409 }
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
410 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
411
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
412 }
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
413
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parents:
diff changeset
414 #endif
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415
3ecd8885ac67 Import from CVS: tag r21-2-22
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416
3ecd8885ac67 Import from CVS: tag r21-2-22
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417 /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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418 * mark_x
3ecd8885ac67 Import from CVS: tag r21-2-22
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419 *
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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420 * After successfully building the new a.out, mark it executable
3ecd8885ac67 Import from CVS: tag r21-2-22
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421 */
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422
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423 static void
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424 mark_x (char *name)
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425 {
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426 struct stat sbuf;
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diff changeset
427 int um = umask (777);
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cvs
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diff changeset
428 umask (um);
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cvs
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diff changeset
429 if (stat (name, &sbuf) < 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
430 fatal_unexec ("getting protection on %s", name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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diff changeset
431 sbuf.st_mode |= 0111 & ~um;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
432 if (chmod (name, sbuf.st_mode) < 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
433 fatal_unexec ("setting protection on %s", name);
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parents:
diff changeset
434 }
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
435
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
436 static void
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diff changeset
437 fatal_unexec (char *s, char *arg)
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cvs
parents:
diff changeset
438 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
439 if (errno == EEOF)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
440 fputs ("unexec: unexpected end of file, ", stderr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
441 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
442 fprintf (stderr, "unexec: %s, ", strerror (errno));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
443 fprintf (stderr, s, arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
444 fputs (".\n", stderr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
445 exit (1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
446 }