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Restore changes of 1999-10-19.

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(unexec): Don't adjust bss for sbss type SHT_PROGBITS; otherwise
fix its type and alignment; copy it from current process.
This commit is contained in:
Dave Love 2000-03-12 17:04:43 +00:00
parent 9b2f3c3830
commit 1b963cdda9
1 changed files with 33 additions and 19 deletions
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52
src/unexelf.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1985, 1986, 1987, 1988, 1990, 1992
/* Copyright (C) 1985, 1986, 1987, 1988, 1990, 1992, 1999, 2000
Free Software Foundation, Inc.
This file is part of GNU Emacs.
@ -52,11 +52,6 @@ what you give them. Help stamp out software-hoarding! */
* The value you specify may be rounded down to a suitable boundary
* as required by the machine you are using.
*
* Specifying zero for data_start means the boundary between text and data
* should not be the same as when the program was loaded.
* If NO_REMAP is defined, the argument data_start is ignored and the
* segment boundaries are never changed.
*
* Bss_start indicates how much of the data segment is to be saved in the
* a.out file and restored when the program is executed. It gives the lowest
* unsaved address, and is rounded up to a page boundary. The default when 0
@ -66,9 +61,6 @@ what you give them. Help stamp out software-hoarding! */
*
* The new file is set up to start at entry_address.
*
* If you make improvements I'd like to get them too.
* harpo!utah-cs!thomas, thomas@Utah-20
*
*/
/* Even more heavily modified by james@bigtex.cactus.org of Dell Computer Co.
@ -412,6 +404,13 @@ Filesz Memsz Flags Align
*/
#ifndef emacs
#define fatal(a, b, c) fprintf (stderr, a, b, c), exit (1)
#else
#include <config.h>
extern void fatal (char *, ...);
#endif
#include <sys/types.h>
#include <stdio.h>
#include <sys/stat.h>
@ -509,17 +508,18 @@ typedef struct {
#ifndef ElfW
# ifdef __STDC__
# define ElfW(type) Elf32_##type
# define ElfBitsW(bits, type) Elf##bits##_##type
# else
# define ElfW(type) Elf32_/**/type
# define ElfBitsW(bits, type) Elf/**/bits/**/_/**/type
# endif
#endif
#ifndef emacs
#define fatal(a, b, c) fprintf (stderr, a, b, c), exit (1)
#else
#include <config.h>
extern void fatal (char *, ...);
# ifdef _LP64
# define ELFSIZE 64
# else
# define ELFSIZE 32
# endif
/* This macro expands `bits' before invoking ElfBitsW. */
# define ElfExpandBitsW(bits, type) ElfBitsW (bits, type)
# define ElfW(type) ElfExpandBitsW (ELFSIZE, type)
#endif
#ifndef ELF_BSS_SECTION_NAME
@ -702,6 +702,9 @@ unexec (new_name, old_name, data_start, bss_start, entry_address)
old_sbss_index = find_section (".sbss", old_section_names,
old_name, old_file_h, old_section_h, 1);
if (old_sbss_index != -1)
if (OLD_SECTION_H (old_sbss_index).sh_type == SHT_PROGBITS)
old_sbss_index = -1;
if (old_sbss_index == -1)
{
@ -958,6 +961,15 @@ unexec (new_name, old_name, data_start, bss_start, entry_address)
if (NEW_SECTION_H (nn).sh_type != SHT_SYMTAB
&& NEW_SECTION_H (nn).sh_type != SHT_DYNSYM)
PATCH_INDEX (NEW_SECTION_H (nn).sh_info);
if (old_sbss_index != -1)
if (!strcmp (old_section_names + NEW_SECTION_H (nn).sh_name, ".sbss"))
{
NEW_SECTION_H (nn).sh_offset =
round_up (NEW_SECTION_H (nn).sh_offset,
NEW_SECTION_H (nn).sh_addralign);
NEW_SECTION_H (nn).sh_type = SHT_PROGBITS;
}
/* Now, start to copy the content of sections. */
if (NEW_SECTION_H (nn).sh_type == SHT_NULL
@ -977,7 +989,9 @@ unexec (new_name, old_name, data_start, bss_start, entry_address)
|| !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
".sdata1")
|| !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
".data1"))
".data1")
|| !strcmp (old_section_names + NEW_SECTION_H (nn).sh_name,
".sbss"))
src = (caddr_t) OLD_SECTION_H (n).sh_addr;
else
src = old_base + OLD_SECTION_H (n).sh_offset;