annotate src/unexalpha.c @ 2367:ecf1ebac70d8

[xemacs-hg @ 2004-11-04 23:05:23 by ben] commit mega-patch configure.in: Turn off -Winline and -Wchar-subscripts. Use the right set of cflags when compiling modules. Rewrite ldap configuration to separate the inclusion of lber (needed in recent Cygwin) from the basic checks for the needed libraries. add a function for MAKE_JUNK_C; initially code was added to generate xemacs.def using this, but it will need to be rewritten. add an rm -f for junk.c to avoid weird Cygwin bug with cp -f onto an existing file. Sort list of auto-detected functions and eliminate unused checks for stpcpy, setlocale and getwd. Add autodetection of Cygwin scanf problems BETA: Rewrite section on configure to indicate what flags are important and what not. digest-doc.c, make-dump-id.c, profile.c, sorted-doc.c: Add proper decls for main(). make-msgfile.c: Document that this is old junk. Move proposal to text.c. make-msgfile.lex: Move proposal to text.c. make-mswin-unicode.pl: Convert error-generating code so that the entire message will be seen as a single unrecognized token. mule/mule-ccl.el: Update docs. lispref/mule.texi: Update CCL docs. ldap/eldap.c: Mule-ize. Use EXTERNAL_LIST_LOOP_2 instead of deleted EXTERNAL_LIST_LOOP. * XEmacs 21.5.18 "chestnut" is released. --------------------------------------------------------------- MULE-RELATED WORK: --------------------------------------------------------------- --------------------------- byte-char conversion --------------------------- buffer.c, buffer.h, insdel.c, text.c: Port FSF algorithm for byte-char conversion, replacing broken previous version. Track the char position of the gap. Add functions to do char-byte conversion downwards as well as upwards. Move comments about algorithm workings to internals manual. --------------------------- work on types --------------------------- alloc.c, console-x-impl.h, dump-data.c, dump-data.h, dumper.c, dialog-msw.c, dired-msw.c, doc.c, editfns.c, esd.c, event-gtk.h, event-msw.c, events.c, file-coding.c, file-coding.h, fns.c, glyphs-eimage.c, glyphs-gtk.c, glyphs-msw.c, glyphs-shared.c, glyphs-x.c, glyphs.c, glyphs.h, gui.c, hpplay.c, imgproc.c, intl-win32.c, lrecord.h, lstream.c, keymap.c, lisp.h, libsst.c, linuxplay.c, miscplay.c, miscplay.h, mule-coding.c, nas.c, nt.c, ntheap.c, ntplay.c, objects-msw.c, objects-tty.c, objects-x.c, print.c, process-nt.c, process.c, redisplay.h, select-common.h, select-gtk.c, select-x.c, sgiplay.c, sound.c, sound.h, sunplay.c, sysfile.h, sysdep.c, syswindows.h, text.c, unexnt.c, win32.c, xgccache.c: Further work on types. This creates a full set of types for all the basic semantics of `char' that I have so far identified, so that its semantics can always be identified for the purposes of proper Mule-safe code, and the raw use of `char' always avoided. (1) More type renaming, for consistency of naming. Char_ASCII -> Ascbyte UChar_ASCII -> UAscbyte Char_Binary -> CBinbyte UChar_Binary -> Binbyte SChar_Binary -> SBinbyte (2) Introduce Rawbyte, CRawbyte, Boolbyte, Chbyte, UChbyte, and Bitbyte and use them. (3) New types Itext, Wexttext and Textcount for separating out the concepts of bytes and textual units (different under UTF-16 and UTF-32, which are potential internal encodings). (4) qxestr*_c -> qxestr*_ascii. lisp.h: New; goes with other qxe() functions. #### Maybe goes in a different section. lisp.h: Group generic int-type defs together with EMACS_INT defs. lisp.h: * lisp.h (WEXTTEXT_IS_WIDE) New defns. lisp.h: New type to replace places where int occurs as a boolean. It's signed because occasionally people may want to use -1 as an error value, and because unsigned ints are viral -- see comments in the internals manual against using them. dynarr.c: int -> Bytecount. --------------------------- Mule-izing --------------------------- device-x.c: Partially Mule-ize. dumper.c, dumper.h: Mule-ize. Use Rawbyte. Use stderr_out not printf. Use wext_*(). sysdep.c, syswindows.h, text.c: New Wexttext API for manipulation of external text that may be Unicode (e.g. startup code under Windows). emacs.c: Mule-ize. Properly deal with argv in external encoding. Use wext_*() and Wexttext. Use Rawbyte. #if 0 some old junk on SCO that is unlikely to be correct. Rewrite allocation code in run-temacs. emacs.c, symsinit.h, win32.c: Rename win32 init function and call it even earlier, to initialize mswindows_9x_p even earlier, for use in startup code (XEUNICODE_P). process.c: Use _wenviron not environ under Windows, to get Unicode environment variables. event-Xt.c: Mule-ize drag-n-drop related stuff. dragdrop.c, dragdrop.h, frame-x.c: Mule-ize. text.h: Add some more stand-in defines for particular kinds of conversion; use in Mule-ization work in frame-x.c etc. --------------------------- Freshening --------------------------- intl-auto-encap-win32.c, intl-auto-encap-win32.h: Regenerate. --------------------------- Unicode-work --------------------------- intl-win32.c, syswindows.h: Factor out common options to MultiByteToWideChar and WideCharToMultiByte. Add convert_unicode_to_multibyte_malloc() and convert_unicode_to_multibyte_dynarr() and use. Add stuff for alloca() conversion of multibyte/unicode. alloc.c: Use dfc_external_data_len() in case of unicode coding system. alloc.c, mule-charset.c: Don't zero out and reinit charset Unicode tables. This fucks up dump-time loading. Anyway, either we load them at dump time or run time, never both. unicode.c: Dump the blank tables as well. --------------------------------------------------------------- DOCUMENTATION, MOSTLY MULE-RELATED: --------------------------------------------------------------- EmacsFrame.c, emodules.c, event-Xt.c, fileio.c, input-method-xlib.c, mule-wnnfns.c, redisplay-gtk.c, redisplay-tty.c, redisplay-x.c, regex.c, sysdep.c: Add comment about Mule work needed. text.h: Add more documentation describing why DFC routines were not written to return their value. Add some other DFC documentation. console-msw.c, console-msw.h: Add pointer to docs in win32.c. emacs.c: Add comments on sources of doc info. text.c, charset.h, unicode.c, intl-win32.c, intl-encap-win32.c, text.h, file-coding.c, mule-coding.c: Collect background comments and related to text matters and internationalization, and proposals for work to be done, in text.c or Internals manual, stuff related to specific textual API's in text.h, and stuff related to internal implementation of Unicode conversion in unicode.c. Put lots of pointers to the comments to make them easier to find. s/mingw32.h, s/win32-common.h, s/win32-native.h, s/windowsnt.h, win32.c: Add bunches of new documentation on the different kinds of builds and environments under Windows and how they work. Collect this info in win32.c. Add pointers to these docs in the relevant s/* files. emacs.c: Document places with long comments. Remove comment about exiting, move to internals manual, put in pointer. event-stream.c: Move docs about event queues and focus to internals manual, put in pointer. events.h: Move docs about event stream callbacks to internals manual, put in pointer. profile.c, redisplay.c, signal.c: Move documentation to the Internals manual. process-nt.c: Add pointer to comment in win32-native.el. lisp.h: Add comments about some comment conventions. lisp.h: Add comment about the second argument. device-msw.c, redisplay-msw.c: @@#### comments are out-of-date. --------------------------------------------------------------- PDUMP WORK (MOTIVATED BY UNICODE CHANGES) --------------------------------------------------------------- alloc.c, buffer.c, bytecode.c, console-impl.h, console.c, device.c, dumper.c, lrecord.h, elhash.c, emodules.h, events.c, extents.c, frame.c, glyphs.c, glyphs.h, mule-charset.c, mule-coding.c, objects.c, profile.c, rangetab.c, redisplay.c, specifier.c, specifier.h, window.c, lstream.c, file-coding.h, file-coding.c: PDUMP: Properly implement dump_add_root_block(), which never worked before, and is necessary for dumping Unicode tables. Pdump name changes for accuracy: XD_STRUCT_PTR -> XD_BLOCK_PTR. XD_STRUCT_ARRAY -> XD_BLOCK_ARRAY. XD_C_STRING -> XD_ASCII_STRING. *_structure_* -> *_block_*. lrecord.h: some comments added about dump_add_root_block() vs dump_add_root_block_ptr(). extents.c: remove incorrect comment about pdump problems with gap array. --------------------------------------------------------------- ALLOCATION --------------------------------------------------------------- abbrev.c, alloc.c, bytecode.c, casefiddle.c, device-msw.c, device-x.c, dired-msw.c, doc.c, doprnt.c, dragdrop.c, editfns.c, emodules.c, file-coding.c, fileio.c, filelock.c, fns.c, glyphs-eimage.c, glyphs-gtk.c, glyphs-msw.c, glyphs-x.c, gui-msw.c, gui-x.c, imgproc.c, intl-win32.c, lread.c, menubar-gtk.c, menubar.c, nt.c, objects-msw.c, objects-x.c, print.c, process-nt.c, process-unix.c, process.c, realpath.c, redisplay.c, search.c, select-common.c, symbols.c, sysdep.c, syswindows.h, text.c, text.h, ui-byhand.c: New macros {alloca,xnew}_{itext,{i,ext,raw,bin,asc}bytes} for more convenient allocation of these commonly requested items. Modify functions to use alloca_ibytes, alloca_array, alloca_extbytes, xnew_ibytes, etc. also XREALLOC_ARRAY, xnew. alloc.c: Rewrite the allocation functions to factor out repeated code. Add assertions for freeing dumped data. lisp.h: Moved down and consolidated with other allocation stuff. lisp.h, dynarr.c: New functions for allocation that's very efficient when mostly in LIFO order. lisp.h, text.c, text.h: Factor out some stuff for general use by alloca()-conversion funs. text.h, lisp.h: Fill out convenience routines for allocating various kinds of bytes and put them in lisp.h. Use them in place of xmalloc(), ALLOCA(). text.h: Fill out the convenience functions so the _MALLOC() kinds match the alloca() kinds. --------------------------------------------------------------- ERROR-CHECKING --------------------------------------------------------------- text.h: Create ASSERT_ASCTEXT_ASCII() and ASSERT_ASCTEXT_ASCII_LEN() from similar Eistring checkers and change the Eistring checkers to use them instead. --------------------------------------------------------------- MACROS IN LISP.H --------------------------------------------------------------- lisp.h: Redo GCPRO declarations. Create a "base" set of functions that can be used to generate any kind of gcpro sets -- regular, ngcpro, nngcpro, private ones used in GC_EXTERNAL_LIST_LOOP_2. buffer.c, callint.c, chartab.c, console-msw.c, device-x.c, dialog-msw.c, dired.c, extents.c, ui-gtk.c, rangetab.c, nt.c, mule-coding.c, minibuf.c, menubar-msw.c, menubar.c, menubar-gtk.c, lread.c, lisp.h, gutter.c, glyphs.c, glyphs-widget.c, fns.c, fileio.c, file-coding.c, specifier.c: Eliminate EXTERNAL_LIST_LOOP, which does not check for circularities. Use EXTERNAL_LIST_LOOP_2 instead or EXTERNAL_LIST_LOOP_3 or EXTERNAL_PROPERTY_LIST_LOOP_3 or GC_EXTERNAL_LIST_LOOP_2 (new macro). Removed/redid comments on EXTERNAL_LIST_LOOP. --------------------------------------------------------------- SPACING FIXES --------------------------------------------------------------- callint.c, hftctl.c, number-gmp.c, process-unix.c: Spacing fixes. --------------------------------------------------------------- FIX FOR GEOMETRY PROBLEM IN FIRST FRAME --------------------------------------------------------------- unicode.c: Add workaround for newlib bug in sscanf() [should be fixed by release 1.5.12 of Cygwin]. toolbar.c: bug fix for problem of initial frame being 77 chars wide on Windows. will be overridden by my other ws. --------------------------------------------------------------- FIX FOR LEAKING PROCESS HANDLES: --------------------------------------------------------------- process-nt.c: Fixes for leaking handles. Inspired by work done by Adrian Aichner <adrian@xemacs.org>. --------------------------------------------------------------- FIX FOR CYGWIN BUG (Unicode-related): --------------------------------------------------------------- unicode.c: Add workaround for newlib bug in sscanf() [should be fixed by release 1.5.12 of Cygwin]. --------------------------------------------------------------- WARNING FIXES: --------------------------------------------------------------- console-stream.c: `reinit' is unused. compiler.h, event-msw.c, frame-msw.c, intl-encap-win32.c, text.h: Add stuff to deal with ANSI-aliasing warnings I got. regex.c: Gather includes together to avoid warning. --------------------------------------------------------------- CHANGES TO INITIALIZATION ROUTINES: --------------------------------------------------------------- buffer.c, emacs.c, console.c, debug.c, device-x.c, device.c, dragdrop.c, emodules.c, eval.c, event-Xt.c, event-gtk.c, event-msw.c, event-stream.c, event-tty.c, events.c, extents.c, faces.c, file-coding.c, fileio.c, font-lock.c, frame-msw.c, glyphs-widget.c, glyphs.c, gui-x.c, insdel.c, lread.c, lstream.c, menubar-gtk.c, menubar-x.c, minibuf.c, mule-wnnfns.c, objects-msw.c, objects.c, print.c, scrollbar-x.c, search.c, select-x.c, text.c, undo.c, unicode.c, window.c, symsinit.h: Call reinit_*() functions directly from emacs.c, for clarity. Factor out some redundant init code. Move disallowed stuff that had crept into vars_of_glyphs() into complex_vars_of_glyphs(). Call init_eval_semi_early() from eval.c not in the middle of vars_of_() in emacs.c since there should be no order dependency in the latter calls. --------------------------------------------------------------- ARMAGEDDON: --------------------------------------------------------------- alloc.c, emacs.c, lisp.h, print.c: Rename inhibit_non_essential_printing_operations to inhibit_non_essential_conversion_operations. text.c: Assert on !inhibit_non_essential_conversion_operations. console-msw.c, print.c: Don't do conversion in SetConsoleTitle or FindWindow to avoid problems during armageddon. Put #errors for NON_ASCII_INTERNAL_FORMAT in places where problems would arise. --------------------------------------------------------------- CHANGES TO THE BUILD PROCEDURE: --------------------------------------------------------------- config.h.in, s/cxux.h, s/usg5-4-2.h, m/powerpc.h: Add comment about correct ordering of this file. Rearrange everything to follow this -- put all #undefs together and before the s&m files. Add undefs for HAVE_ALLOCA, C_ALLOCA, BROKEN_ALLOCA_IN_FUNCTION_CALLS, STACK_DIRECTION. Remove unused HAVE_STPCPY, HAVE_GETWD, HAVE_SETLOCALE. m/gec63.h: Deleted; totally broken, not used at all, not in FSF. m/7300.h, m/acorn.h, m/alliant-2800.h, m/alliant.h, m/altos.h, m/amdahl.h, m/apollo.h, m/att3b.h, m/aviion.h, m/celerity.h, m/clipper.h, m/cnvrgnt.h, m/convex.h, m/cydra5.h, m/delta.h, m/delta88k.h, m/dpx2.h, m/elxsi.h, m/ews4800r.h, m/gould.h, m/hp300bsd.h, m/hp800.h, m/hp9000s300.h, m/i860.h, m/ibmps2-aix.h, m/ibmrs6000.h, m/ibmrt-aix.h, m/ibmrt.h, m/intel386.h, m/iris4d.h, m/iris5d.h, m/iris6d.h, m/irist.h, m/isi-ov.h, m/luna88k.h, m/m68k.h, m/masscomp.h, m/mg1.h, m/mips-nec.h, m/mips-siemens.h, m/mips.h, m/news.h, m/nh3000.h, m/nh4000.h, m/ns32000.h, m/orion105.h, m/pfa50.h, m/plexus.h, m/pmax.h, m/powerpc.h, m/pyrmips.h, m/sequent-ptx.h, m/sequent.h, m/sgi-challenge.h, m/symmetry.h, m/tad68k.h, m/tahoe.h, m/targon31.h, m/tekxd88.h, m/template.h, m/tower32.h, m/tower32v3.h, m/ustation.h, m/vax.h, m/wicat.h, m/xps100.h: Delete C_ALLOCA, HAVE_ALLOCA, STACK_DIRECTION, BROKEN_ALLOCA_IN_FUNCTION_CALLS. All of this is auto-detected. When in doubt, I followed recent FSF sources, which also have these things deleted.
author ben
date Thu, 04 Nov 2004 23:08:28 +0000
parents 04bc9d2f42c7
children facf3239ba30
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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
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2, or (at your option)
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10 any later version.
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11
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12 XEmacs is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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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; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: FSF 19.31. */
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25 #include <config.h>
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26 #include <stdlib.h>
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27 #include <string.h>
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28 #include <unistd.h>
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29 #include <sys/types.h>
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30 #include <sys/file.h>
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31 #include <sys/stat.h>
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32 #include <sys/mman.h>
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33 #include <stdio.h>
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34 #include <errno.h>
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35 #include <varargs.h>
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36 #include <filehdr.h>
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37 #include <aouthdr.h>
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38 #include <scnhdr.h>
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39 #include <syms.h>
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40 #include "compiler.h"
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42 static void fatal_unexec (char *, char *);
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43 static void mark_x (char *);
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44
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45 #define READ(_fd, _buffer, _size, _error_message, _error_arg) \
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46 errno = EEOF; \
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47 if (read (_fd, _buffer, _size) != _size) \
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48 fatal_unexec (_error_message, _error_arg);
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49
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50 #define WRITE(_fd, _buffer, _size, _error_message, _error_arg) \
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51 if (write (_fd, _buffer, _size) != _size) \
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52 fatal_unexec (_error_message, _error_arg);
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53
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54 #define SEEK(_fd, _position, _error_message, _error_arg) \
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55 errno = EEOF; \
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56 if (lseek (_fd, _position, L_SET) != _position) \
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57 fatal_unexec (_error_message, _error_arg);
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58
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59 #define EEOF -1
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60
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61 static struct scnhdr *text_section;
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62 static struct scnhdr *init_section;
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63 static struct scnhdr *finit_section;
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64 static struct scnhdr *rdata_section;
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65 static struct scnhdr *rconst_section;
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66 static struct scnhdr *data_section;
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67 static struct scnhdr *pdata_section;
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68 static struct scnhdr *xdata_section;
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69 static struct scnhdr *got_section;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
70 static struct scnhdr *lit8_section;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
71 static struct scnhdr *lit4_section;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
72 static struct scnhdr *sdata_section;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
73 static struct scnhdr *sbss_section;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
74 static struct scnhdr *bss_section;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
75
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
76 static unsigned long Brk;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
77
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
78 struct headers {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
79 struct filehdr fhdr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
80 struct aouthdr aout;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
81 struct scnhdr section[_MIPS_NSCNS_MAX];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
82 };
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
83
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
84
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
85 /* Define name of label for entry point for the dumped executable. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
86
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
87 #ifndef DEFAULT_ENTRY_ADDRESS
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
88 #define DEFAULT_ENTRY_ADDRESS __start
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
89 #endif
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 438
diff changeset
90 EXTERN_C int DEFAULT_ENTRY_ADDRESS (void);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 438
diff changeset
91
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
92
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
93 int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
94 unexec (char *new_name, char *a_name,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
95 unsigned long data_start,
2286
04bc9d2f42c7 [xemacs-hg @ 2004-09-20 19:18:55 by james]
james
parents: 613
diff changeset
96 unsigned long UNUSED (bss_start),
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
97 unsigned long entry_address)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
98 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
99 int new, old;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
100 char * oldptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
101 struct headers ohdr, nhdr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
102 struct stat stat;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
103 long pagesize, brk;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
104 long newsyms, symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
105 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
106 long vaddr, scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
107 #define BUFSIZE 8192
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
108 char buffer[BUFSIZE];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
109
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
110 if ((old = open (a_name, O_RDONLY)) < 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
111 fatal_unexec ("opening %s", a_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
112
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
113 new = creat (new_name, 0666);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
114 if (new < 0) fatal_unexec ("creating %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
115
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
116 if ((fstat (old, &stat) == -1))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
117 fatal_unexec ("fstat %s", a_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
118
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
119 oldptr = (char *)mmap (0, stat.st_size, PROT_READ, MAP_FILE|MAP_SHARED, old, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
120
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
121 if (oldptr == (char *)-1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
122 fatal_unexec ("mmap %s", a_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
123
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
124 close (old);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
125
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
126 /* This is a copy of the a.out header of the original executable */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
127
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
128 ohdr = (*(struct headers *)oldptr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
129
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
130 /* This is where we build the new header from the in-memory copy */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
131
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
132 nhdr = *((struct headers *)TEXT_START);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
133
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
134 /* First do some consistency checks */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
135
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
136 if (nhdr.fhdr.f_magic != ALPHAMAGIC
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
137 && nhdr.fhdr.f_magic != ALPHAUMAGIC)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
138 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
139 fprintf (stderr, "unexec: input file magic number is %x, not %x or %x.\n",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
140 nhdr.fhdr.f_magic, ALPHAMAGIC, ALPHAUMAGIC);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
141 exit (1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
142 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
143
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
144 if (nhdr.fhdr.f_opthdr != sizeof (nhdr.aout))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
145 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
146 fprintf (stderr, "unexec: input a.out header is %d bytes, not %ld.\n",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
147 nhdr.fhdr.f_opthdr, (long) (sizeof (nhdr.aout)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
148 exit (1);
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 if (nhdr.aout.magic != ZMAGIC)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
151 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
152 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
153 nhdr.aout.magic, ZMAGIC);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
154 exit (1);
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
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
157
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
158 /* Now check the existence of certain header section and grab
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
159 their addresses. */
3ecd8885ac67 Import from CVS: tag r21-2-22
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160
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
161 #define CHECK_SCNHDR(ptr, name, flags) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
162 ptr = NULL; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
163 for (i = 0; i < nhdr.fhdr.f_nscns && !ptr; i++) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
164 if (strcmp (nhdr.section[i].s_name, name) == 0) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
165 { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
166 if (nhdr.section[i].s_flags != flags) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
167 fprintf (stderr, "unexec: %x flags (%x expected) in %s section.\n", \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
168 nhdr.section[i].s_flags, flags, name); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
169 ptr = nhdr.section + i; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
170 } \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
171
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
172 CHECK_SCNHDR (text_section, _TEXT, STYP_TEXT);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
173 CHECK_SCNHDR (init_section, _INIT, STYP_INIT);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
174 #ifdef _FINI
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
175 CHECK_SCNHDR (finit_section, _FINI, STYP_FINI);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
176 #endif /* _FINI */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
177 CHECK_SCNHDR (rdata_section, _RDATA, STYP_RDATA);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
178 #ifdef _RCONST
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
179 CHECK_SCNHDR (rconst_section, _RCONST, STYP_RCONST);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
180 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
181 #ifdef _PDATA
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
182 CHECK_SCNHDR (pdata_section, _PDATA, STYP_PDATA);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
183 #endif /* _PDATA */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
184 #ifdef _GOT
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
185 CHECK_SCNHDR (got_section, _GOT, STYP_GOT);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
186 #endif /* _GOT */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
187 CHECK_SCNHDR (data_section, _DATA, STYP_DATA);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
188 #ifdef _XDATA
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
189 CHECK_SCNHDR (xdata_section, _XDATA, STYP_XDATA);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
190 #endif /* _XDATA */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
191 #ifdef _LIT8
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
192 CHECK_SCNHDR (lit8_section, _LIT8, STYP_LIT8);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
193 CHECK_SCNHDR (lit4_section, _LIT4, STYP_LIT4);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
194 #endif /* _LIT8 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
195 CHECK_SCNHDR (sdata_section, _SDATA, STYP_SDATA);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
196 CHECK_SCNHDR (sbss_section, _SBSS, STYP_SBSS);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
197 CHECK_SCNHDR (bss_section, _BSS, STYP_BSS);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
198
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
199
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
200 pagesize = getpagesize ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
201 brk = (((long) (sbrk (0))) + pagesize - 1) & (-pagesize);
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 /* Remember the current break */
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 Brk = brk;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
206
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
207 nhdr.aout.dsize = brk - DATA_START;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
208 nhdr.aout.bsize = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
209 if (entry_address == 0)
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 nhdr.aout.entry = (unsigned long)DEFAULT_ENTRY_ADDRESS;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
212 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
213 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
214 nhdr.aout.entry = entry_address;
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 nhdr.aout.bss_start = nhdr.aout.data_start + nhdr.aout.dsize;
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 if (rdata_section != NULL)
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 rdata_section->s_size = data_start - DATA_START;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
221
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
222 /* Adjust start and virtual addresses of rdata_section, too. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
223 rdata_section->s_vaddr = DATA_START;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
224 rdata_section->s_paddr = DATA_START;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
225 rdata_section->s_scnptr = text_section->s_scnptr + nhdr.aout.tsize;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
226 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
227
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
228 data_section->s_vaddr = data_start;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
229 data_section->s_paddr = data_start;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
230 data_section->s_size = brk - data_start;
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 if (rdata_section != NULL)
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 data_section->s_scnptr = rdata_section->s_scnptr + rdata_section->s_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
235 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
236
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
237 vaddr = data_section->s_vaddr + data_section->s_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
238 scnptr = data_section->s_scnptr + data_section->s_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
239 if (lit8_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
240 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
241 lit8_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
242 lit8_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
243 lit8_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
244 lit8_section->s_scnptr = scnptr;
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 if (lit4_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
247 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
248 lit4_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
249 lit4_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
250 lit4_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
251 lit4_section->s_scnptr = scnptr;
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 if (sdata_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
254 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
255 sdata_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
256 sdata_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
257 sdata_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
258 sdata_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
259 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
260 #ifdef _XDATA
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
261 if (xdata_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
262 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
263 xdata_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
264 xdata_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
265 xdata_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
266 xdata_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
267 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
268 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
269 #ifdef _GOT
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
270 if (got_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
271 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
272 got_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
273 got_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
274 got_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
275 got_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
276 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
277 #endif /*_GOT */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
278 if (sbss_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
279 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
280 sbss_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
281 sbss_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
282 sbss_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
283 sbss_section->s_scnptr = scnptr;
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 if (bss_section != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
286 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
287 bss_section->s_vaddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
288 bss_section->s_paddr = vaddr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
289 bss_section->s_size = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
290 bss_section->s_scnptr = scnptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
291 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
292
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
293 WRITE (new, (char *)TEXT_START, nhdr.aout.tsize,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
294 "writing text section to %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
295 WRITE (new, (char *)DATA_START, nhdr.aout.dsize,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
296 "writing data section to %s", new_name);
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
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 * Construct new symbol table header
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
301 */
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 memcpy (buffer, oldptr + nhdr.fhdr.f_symptr, cbHDRR);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
304
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
305 #define symhdr ((pHDRR)buffer)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
306 newsyms = nhdr.aout.tsize + nhdr.aout.dsize;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
307 symrel = newsyms - nhdr.fhdr.f_symptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
308 nhdr.fhdr.f_symptr = newsyms;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
309 symhdr->cbLineOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
310 symhdr->cbDnOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
311 symhdr->cbPdOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
312 symhdr->cbSymOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
313 symhdr->cbOptOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
314 symhdr->cbAuxOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
315 symhdr->cbSsOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
316 symhdr->cbSsExtOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
317 symhdr->cbFdOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
318 symhdr->cbRfdOffset += symrel;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
319 symhdr->cbExtOffset += symrel;
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 WRITE (new, buffer, cbHDRR, "writing symbol table header of %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
322
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
323 /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
324 * Copy the symbol table and line numbers
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
325 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
326 WRITE (new, oldptr + ohdr.fhdr.f_symptr + cbHDRR,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
327 stat.st_size - ohdr.fhdr.f_symptr - cbHDRR,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
328 "writing symbol table of %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
329
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
330 #if 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
331
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
332 /* Not needed for now */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
333
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
334 update_dynamic_symbols (oldptr, new_name, new, newsyms,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
335 ((pHDRR) (oldptr + ohdr.fhdr.f_symptr))->issExtMax,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
336 ((pHDRR) (oldptr + ohdr.fhdr.f_symptr))->cbExtOffset,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
337 ((pHDRR) (oldptr + ohdr.fhdr.f_symptr))->cbSsExtOffset);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
338
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
339 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
340
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
341 #undef symhdr
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
342
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
343 SEEK (new, 0, "seeking to start of header in %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
344 WRITE (new, &nhdr, sizeof (nhdr),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
345 "writing header of %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
346
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
347 close (old);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
348 close (new);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
349 mark_x (new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
350 return 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
351 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
352
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
353
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
354 #if 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
355
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
356 /* Not needed for now */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
357
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
358 /* The following function updates the values of some symbols
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
359 that are used by the dynamic loader:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
360
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
361 _edata
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
362 _end
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
363
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
364 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
365
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
366 int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
367 update_dynamic_symbols (
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
368 char *old, /* Pointer to old executable */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
369 char *new_name, /* Name of new executable */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
370 int new, /* File descriptor for new executable */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
371 long newsyms, /* Offset of Symbol table in new executable */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
372 int nsyms, /* Number of symbol table entries */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
373 long symoff, /* Offset of External Symbols in old file */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
374 long stroff) /* Offset of string table in old file */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
375 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
376 long i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
377 int found = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
378 EXTR n_end, n_edata;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
379
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
380 /* We go through the symbol table entries until we have found the two
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
381 symbols. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
382
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
383 /* cbEXTR is the size of an external symbol table entry */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
384
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
385 for (i = 0; i < nsyms && found < 2; i += cbEXTR)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
386 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
387 REGISTER pEXTR x = (pEXTR) (old + symoff + i);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
388 char *s;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
389
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
390 s = old + stroff + x->asym.iss; /* name of the symbol */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
391
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
392 if (!strcmp(s,"_edata"))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
393 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
394 found++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
395 memcpy (&n_edata, x, cbEXTR);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
396 n_edata.asym.value = Brk;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
397 SEEK (new, newsyms + cbHDRR + i,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
398 "seeking to symbol _edata in %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
399 WRITE (new, &n_edata, cbEXTR,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
400 "writing symbol table entry for _edata into %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
401 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
402 else if (!strcmp(s,"_end"))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
403 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
404 found++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
405 memcpy (&n_end, x, cbEXTR);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
406 n_end.asym.value = Brk;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
407 SEEK (new, newsyms + cbHDRR + i,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
408 "seeking to symbol _end in %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
409 WRITE (new, &n_end, cbEXTR,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
410 "writing symbol table entry for _end into %s", new_name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
411 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
412 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
413
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
414 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
415
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
416 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
417
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
418
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
419 /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
420 * mark_x
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
421 *
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
422 * After successfully building the new a.out, mark it executable
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
423 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
424
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
425 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
426 mark_x (char *name)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
427 {
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
428 struct stat sbuf;
3ecd8885ac67 Import from CVS: tag r21-2-22
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429 int um = umask (777);
3ecd8885ac67 Import from CVS: tag r21-2-22
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430 umask (um);
3ecd8885ac67 Import from CVS: tag r21-2-22
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431 if (stat (name, &sbuf) < 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
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432 fatal_unexec ("getting protection on %s", name);
3ecd8885ac67 Import from CVS: tag r21-2-22
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433 sbuf.st_mode |= 0111 & ~um;
3ecd8885ac67 Import from CVS: tag r21-2-22
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434 if (chmod (name, sbuf.st_mode) < 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
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435 fatal_unexec ("setting protection on %s", name);
3ecd8885ac67 Import from CVS: tag r21-2-22
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436 }
3ecd8885ac67 Import from CVS: tag r21-2-22
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437
3ecd8885ac67 Import from CVS: tag r21-2-22
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438 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
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439 fatal_unexec (char *s, char *arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
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440 {
3ecd8885ac67 Import from CVS: tag r21-2-22
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441 if (errno == EEOF)
3ecd8885ac67 Import from CVS: tag r21-2-22
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442 fputs ("unexec: unexpected end of file, ", stderr);
3ecd8885ac67 Import from CVS: tag r21-2-22
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443 else
3ecd8885ac67 Import from CVS: tag r21-2-22
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444 fprintf (stderr, "unexec: %s, ", strerror (errno));
3ecd8885ac67 Import from CVS: tag r21-2-22
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445 fprintf (stderr, s, arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
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446 fputs (".\n", stderr);
3ecd8885ac67 Import from CVS: tag r21-2-22
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447 exit (1);
3ecd8885ac67 Import from CVS: tag r21-2-22
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448 }