-/* 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.
* 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
*
* 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.
*/
\f
+#ifndef emacs
+#define fatal(a, b, c) fprintf (stderr, a, b, c), exit (1)
+#include <string.h>
+#else
+#include <config.h>
+extern void fatal (char *, ...);
+#endif
+
#include <sys/types.h>
#include <stdio.h>
#include <sys/stat.h>
#include <memory.h>
-#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/elf_mips.h>
#include <sym.h>
#endif /* __sony_news && _SYSTYPE_SYSV */
+#if __sgi
+#include <syms.h> /* for HDRR declaration */
+#endif /* __sgi */
#if defined (__alpha__) && !defined (__NetBSD__) && !defined (__OpenBSD__)
/* Declare COFF debugging symbol table. This used to be in
/*
* NetBSD does not have normal-looking user-land ELF support.
*/
-# ifdef __alpha__
+# if defined __alpha__ || defined __sparc_v9__
# define ELFSIZE 64
# else
# define ELFSIZE 32
# endif
# include <sys/exec_elf.h>
-# define PT_LOAD Elf_pt_load
-# define SHT_SYMTAB Elf_sht_symtab
-# define SHT_DYNSYM Elf_sht_dynsym
-# define SHT_NULL Elf_sht_null
-# define SHT_NOBITS Elf_sht_nobits
-# define SHT_REL Elf_sht_rel
-# define SHT_RELA Elf_sht_rela
-
-# define SHN_UNDEF Elf_eshn_undefined
-# define SHN_ABS Elf_eshn_absolute
-# define SHN_COMMON Elf_eshn_common
-
-/*
- * The magic of picking the right size types is handled by the ELFSIZE
- * definition above.
- */
-# ifdef __STDC__
-# define ElfW(type) Elf_##type
-# else
-# define ElfW(type) Elf_/**/type
-# endif
+# ifndef PT_LOAD
+# define PT_LOAD Elf_pt_load
+# if 0 /* was in pkgsrc patches for 20.7 */
+# define SHT_PROGBITS Elf_sht_progbits
+# endif
+# define SHT_SYMTAB Elf_sht_symtab
+# define SHT_DYNSYM Elf_sht_dynsym
+# define SHT_NULL Elf_sht_null
+# define SHT_NOBITS Elf_sht_nobits
+# define SHT_REL Elf_sht_rel
+# define SHT_RELA Elf_sht_rela
+
+# define SHN_UNDEF Elf_eshn_undefined
+# define SHN_ABS Elf_eshn_absolute
+# define SHN_COMMON Elf_eshn_common
+# endif /* !PT_LOAD */
# ifdef __alpha__
# include <sys/exec_ecoff.h>
# define HDRR struct ecoff_symhdr
# define pHDRR HDRR *
-# endif
+# endif /* __alpha__ */
+
+#ifdef __mips__ /* was in pkgsrc patches for 20.7 */
+# define SHT_MIPS_DEBUG DT_MIPS_FLAGS
+# define HDRR struct Elf_Shdr
+#endif /* __mips__ */
#endif /* __NetBSD__ */
#ifdef __OpenBSD__
#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
/* Get the address of a particular section or program header entry,
* accounting for the size of the entries.
*/
-/*
+/*
On PPC Reference Platform running Solaris 2.5.1
the plt section is also of type NOBI like the bss section.
(not really stored) and therefore sections after the bss
Thus, we modify the test from
if (NEW_SECTION_H (nn).sh_offset >= new_data2_offset)
to
- if (NEW_SECTION_H (nn).sh_offset >=
+ if (NEW_SECTION_H (nn).sh_offset >=
OLD_SECTION_H (old_bss_index-1).sh_offset)
This is just a hack. We should put the new data section
before the .plt section.
/* Round X up to a multiple of Y. */
-ElfW(Addr)
+static ElfW(Addr)
round_up (x, y)
ElfW(Addr) x, y;
{
return x - rem + y;
}
+/* Return the index of the section named NAME.
+ SECTION_NAMES, FILE_NAME and FILE_H give information
+ about the file we are looking in.
+
+ If we don't find the section NAME, that is a fatal error
+ if NOERROR is 0; we return -1 if NOERROR is nonzero. */
+
+static int
+find_section (name, section_names, file_name, old_file_h, old_section_h, noerror)
+ char *name;
+ char *section_names;
+ char *file_name;
+ ElfW(Ehdr) *old_file_h;
+ ElfW(Shdr) *old_section_h;
+ int noerror;
+{
+ int idx;
+
+ for (idx = 1; idx < old_file_h->e_shnum; idx++)
+ {
+#ifdef DEBUG
+ fprintf (stderr, "Looking for %s - found %s\n", name,
+ section_names + OLD_SECTION_H (idx).sh_name);
+#endif
+ if (!strcmp (section_names + OLD_SECTION_H (idx).sh_name,
+ name))
+ break;
+ }
+ if (idx == old_file_h->e_shnum)
+ {
+ if (noerror)
+ return -1;
+ else
+ fatal ("Can't find %s in %s.\n", name, file_name);
+ }
+
+ return idx;
+}
+
/* ****************************************************************
* unexec
*
ElfW(Off) new_data2_offset;
ElfW(Addr) new_data2_addr;
- int n, nn, old_bss_index, old_data_index, new_data2_index;
-#if defined ( __sony_news) && defined (_SYSTYPE_SYSV)
- int old_sbss_index, old_mdebug_index;
-#endif /* __sony_news && _SYSTYPE_SYSV */
+ int n, nn;
+ int old_bss_index, old_sbss_index;
+ int old_data_index, new_data2_index;
+ int old_mdebug_index;
struct stat stat_buf;
/* Open the old file & map it into the address space. */
old_section_names = (char *) old_base
+ OLD_SECTION_H (old_file_h->e_shstrndx).sh_offset;
+ /* Find the mdebug section, if any. */
+
+ old_mdebug_index = find_section (".mdebug", old_section_names,
+ old_name, old_file_h, old_section_h, 1);
+
/* Find the old .bss section. Figure out parameters of the new
* data2 and bss sections.
*/
- for (old_bss_index = 1; old_bss_index < (int) old_file_h->e_shnum;
- old_bss_index++)
- {
-#ifdef DEBUG
- fprintf (stderr, "Looking for .bss - found %s\n",
- old_section_names + OLD_SECTION_H (old_bss_index).sh_name);
-#endif
- if (!strcmp (old_section_names + OLD_SECTION_H (old_bss_index).sh_name,
- ELF_BSS_SECTION_NAME))
- break;
- }
- if (old_bss_index == old_file_h->e_shnum)
- fatal ("Can't find .bss in %s.\n", old_name, 0);
+ old_bss_index = find_section (".bss", old_section_names,
+ old_name, old_file_h, old_section_h, 0);
-#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
- for (old_sbss_index = 1; old_sbss_index < (int) old_file_h->e_shnum;
- old_sbss_index++)
- {
-#ifdef DEBUG
- fprintf (stderr, "Looking for .sbss - found %s\n",
- old_section_names + OLD_SECTION_H (old_sbss_index).sh_name);
-#endif
- if (!strcmp (old_section_names + OLD_SECTION_H (old_sbss_index).sh_name,
- ".sbss"))
- break;
- }
- if (old_sbss_index == old_file_h->e_shnum)
+ 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)
{
- old_bss_addr = OLD_SECTION_H(old_bss_index).sh_addr;
- old_bss_size = OLD_SECTION_H(old_bss_index).sh_size;
- new_data2_offset = OLD_SECTION_H(old_bss_index).sh_offset;
+ old_bss_addr = OLD_SECTION_H (old_bss_index).sh_addr;
+ old_bss_size = OLD_SECTION_H (old_bss_index).sh_size;
new_data2_index = old_bss_index;
}
else
{
- old_bss_addr = OLD_SECTION_H(old_sbss_index).sh_addr;
- old_bss_size = OLD_SECTION_H(old_bss_index).sh_size
- + OLD_SECTION_H(old_sbss_index).sh_size;
- new_data2_offset = OLD_SECTION_H(old_sbss_index).sh_offset;
+ old_bss_addr = OLD_SECTION_H (old_sbss_index).sh_addr;
+ old_bss_size = OLD_SECTION_H (old_bss_index).sh_size
+ + OLD_SECTION_H (old_sbss_index).sh_size;
new_data2_index = old_sbss_index;
}
- for (old_mdebug_index = 1; old_mdebug_index < (int) old_file_h->e_shnum;
- old_mdebug_index++)
- {
-#ifdef DEBUG
- fprintf (stderr, "Looking for .mdebug - found %s\n",
- old_section_names + OLD_SECTION_H (old_mdebug_index).sh_name);
-#endif
- if (!strcmp (old_section_names + OLD_SECTION_H (old_mdebug_index).sh_name,
- ".mdebug"))
- break;
- }
- if (old_mdebug_index == old_file_h->e_shnum)
- old_mdebug_index = 0;
-#else /* not (__sony_news && _SYSTYPE_SYSV) */
- old_bss_addr = OLD_SECTION_H (old_bss_index).sh_addr;
- old_bss_size = OLD_SECTION_H (old_bss_index).sh_size;
-#endif /* not (__sony_news && _SYSTYPE_SYSV) */
+ /* Find the old .data section. Figure out parameters of
+ the new data2 and bss sections. */
+
+ old_data_index = find_section (".data", old_section_names,
+ old_name, old_file_h, old_section_h, 0);
+
#if defined (emacs) || !defined (DEBUG)
new_bss_addr = (ElfW(Addr)) sbrk (0);
#else
#endif
new_data2_addr = old_bss_addr;
new_data2_size = new_bss_addr - old_bss_addr;
-#if !defined (__sony_news) || !defined (_SYSTYPE_SYSV)
- new_data2_offset = OLD_SECTION_H (old_bss_index).sh_offset;
-#endif /* not (__sony_news && _SYSTYPE_SYSV) */
+ new_data2_offset = OLD_SECTION_H (old_data_index).sh_offset +
+ (new_data2_addr - OLD_SECTION_H (old_data_index).sh_addr);
#ifdef DEBUG
fprintf (stderr, "old_bss_index %d\n", old_bss_index);
for (n = new_file_h->e_phnum - 1; n >= 0; n--)
{
/* Compute maximum of all requirements for alignment of section. */
- int alignment = (NEW_PROGRAM_H (n)).p_align;
+ ElfW(Word) alignment = (NEW_PROGRAM_H (n)).p_align;
if ((OLD_SECTION_H (old_bss_index)).sh_addralign > alignment)
alignment = OLD_SECTION_H (old_bss_index).sh_addralign;
-#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
+#ifdef __sgi
+ /* According to r02kar@x4u2.desy.de (Karsten Kuenne)
+ and oliva@gnu.org (Alexandre Oliva), on IRIX 5.2, we
+ always get "Program segment above .bss" when dumping
+ when the executable doesn't have an sbss section. */
+ if (old_sbss_index != -1)
+#endif /* __sgi */
if (NEW_PROGRAM_H (n).p_vaddr + NEW_PROGRAM_H (n).p_filesz
- > round_up (old_bss_addr, alignment))
- fatal ("Program segment above .bss in %s\n", old_name, 0);
-#else /* not (__sony_news && _SYSTYPE_SYSV) */
- if (NEW_PROGRAM_H (n).p_vaddr + NEW_PROGRAM_H (n).p_filesz > old_bss_addr)
- fatal ("Program segment above .bss in %s\n", old_name, 0);
-#endif /* not (__sony_news && _SYSTYPE_SYSV) */
+ > (old_sbss_index == -1
+ ? old_bss_addr
+ : round_up (old_bss_addr, alignment)))
+ fatal ("Program segment above .bss in %s\n", old_name, 0);
if (NEW_PROGRAM_H (n).p_type == PT_LOAD
&& (round_up ((NEW_PROGRAM_H (n)).p_vaddr
for (n = 1, nn = 1; n < (int) old_file_h->e_shnum; n++, nn++)
{
caddr_t src;
- int temp_index;
-#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
/* If it is (s)bss section, insert the new data2 section before it. */
/* new_data2_index is the index of either old_sbss or old_bss, that was
chosen as a section for new_data2. */
- temp_index = new_data2_index;
-#else /* not (__sony_news && _SYSTYPE_SYSV) */
- /* If it is bss section, insert the new data2 section before it. */
- temp_index = old_bss_index;
-#endif /* not (__sony_news && _SYSTYPE_SYSV) */
- if (n == temp_index)
+ if (n == new_data2_index)
{
/* Steal the data section header for this data2 section. */
memcpy (&NEW_SECTION_H (nn), &OLD_SECTION_H (old_data_index),
old_file_h->e_shentsize);
if (n == old_bss_index
-#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
/* The new bss and sbss section's size is zero, and its file offset
and virtual address should be off by NEW_DATA2_SIZE. */
|| n == old_sbss_index
-#endif /* __sony_news and _SYSTYPE_SYSV */
)
{
- /* NN should be `old_bss_index + 1' at this point. */
- NEW_SECTION_H (nn).sh_offset += new_data2_size;
- NEW_SECTION_H (nn).sh_addr += new_data2_size;
+ /* NN should be `old_s?bss_index + 1' at this point. */
+ NEW_SECTION_H (nn).sh_offset =
+ NEW_SECTION_H (new_data2_index).sh_offset + new_data2_size;
+ NEW_SECTION_H (nn).sh_addr =
+ NEW_SECTION_H (new_data2_index).sh_addr + new_data2_size;
/* Let the new bss section address alignment be the same as the
section address alignment followed the old bss section, so
this section will be placed in exactly the same place. */
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
".data" in the strings table) get copied from the current process
instead of the old file. */
if (!strcmp (old_section_names + NEW_SECTION_H (n).sh_name, ".data")
-#ifdef _nec_ews_svr4 /* hir, 1994.6.13 */
- || !strcmp ((old_section_names + NEW_SECTION_H(n).sh_name),
- ".sdata")
-#endif
-#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
|| !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
".sdata")
|| !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
".lit4")
|| !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
".lit8")
-#endif /* __sony_news && _SYSTYPE_SYSV */
|| !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
- ".data1"))
+ ".sdata1")
+ || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
+ ".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;
#endif /* __alpha__ */
#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
- if (NEW_SECTION_H (nn).sh_type == SHT_MIPS_DEBUG && old_mdebug_index)
+ if (NEW_SECTION_H (nn).sh_type == SHT_MIPS_DEBUG
+ && old_mdebug_index != -1)
{
int diff = NEW_SECTION_H(nn).sh_offset
- OLD_SECTION_H(old_mdebug_index).sh_offset;
}
}
#endif /* __sony_news && _SYSTYPE_SYSV */
+
+#if __sgi
+ /* Adjust the HDRR offsets in .mdebug and copy the
+ line data if it's in its usual 'hole' in the object.
+ Makes the new file debuggable with dbx.
+ patches up two problems: the absolute file offsets
+ in the HDRR record of .mdebug (see /usr/include/syms.h), and
+ the ld bug that gets the line table in a hole in the
+ elf file rather than in the .mdebug section proper.
+ David Anderson. davea@sgi.com Jan 16,1994. */
+ if (n == old_mdebug_index)
+ {
+#define MDEBUGADJUST(__ct,__fileaddr) \
+ if (n_phdrr->__ct > 0) \
+ { \
+ n_phdrr->__fileaddr += movement; \
+ }
+
+ HDRR * o_phdrr = (HDRR *)((byte *)old_base + OLD_SECTION_H (n).sh_offset);
+ HDRR * n_phdrr = (HDRR *)((byte *)new_base + NEW_SECTION_H (nn).sh_offset);
+ unsigned movement = new_data2_size;
+
+ MDEBUGADJUST (idnMax, cbDnOffset);
+ MDEBUGADJUST (ipdMax, cbPdOffset);
+ MDEBUGADJUST (isymMax, cbSymOffset);
+ MDEBUGADJUST (ioptMax, cbOptOffset);
+ MDEBUGADJUST (iauxMax, cbAuxOffset);
+ MDEBUGADJUST (issMax, cbSsOffset);
+ MDEBUGADJUST (issExtMax, cbSsExtOffset);
+ MDEBUGADJUST (ifdMax, cbFdOffset);
+ MDEBUGADJUST (crfd, cbRfdOffset);
+ MDEBUGADJUST (iextMax, cbExtOffset);
+ /* The Line Section, being possible off in a hole of the object,
+ requires special handling. */
+ if (n_phdrr->cbLine > 0)
+ {
+ if (o_phdrr->cbLineOffset > (OLD_SECTION_H (n).sh_offset
+ + OLD_SECTION_H (n).sh_size))
+ {
+ /* line data is in a hole in elf. do special copy and adjust
+ for this ld mistake.
+ */
+ n_phdrr->cbLineOffset += movement;
+
+ memcpy (n_phdrr->cbLineOffset + new_base,
+ o_phdrr->cbLineOffset + old_base, n_phdrr->cbLine);
+ }
+ else
+ {
+ /* somehow line data is in .mdebug as it is supposed to be. */
+ MDEBUGADJUST (cbLine, cbLineOffset);
+ }
+ }
+ }
+#endif /* __sgi */
+
/* If it is the symbol table, its st_shndx field needs to be patched. */
if (NEW_SECTION_H (nn).sh_type == SHT_SYMTAB
|| NEW_SECTION_H (nn).sh_type == SHT_DYNSYM)
member. */
nn = section.sh_info;
if (!strcmp (old_section_names + NEW_SECTION_H (nn).sh_name, ".data")
+ || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
+ ".sdata")
+ || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
+ ".lit4")
+ || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
+ ".lit8")
+ || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
+ ".sdata1")
|| !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
".data1"))
{