#include <elf.h>
#include <sys/mman.h>
+#ifdef __alpha__
+# include <sym.h> /* get COFF debugging symbol table declaration */
+#endif
+
+#if __GNU_LIBRARY__ - 0 >= 6
+# include <link.h> /* get ElfW etc */
+#endif
+
+#ifndef ElfW
+# ifdef __STDC__
+# define ElfW(type) Elf32_##type
+# else
+# define ElfW(type) Elf32_/**/type
+# endif
+#endif
+
#ifndef emacs
#define fatal(a, b, c) fprintf (stderr, a, b, c), exit (1)
#else
/* 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
+ section start at the plt offset. The plt section is always
+ the one just before the bss section.
+ Thus, we modify the test from
+ if (NEW_SECTION_H (nn).sh_offset >= new_data2_offset)
+ to
+ 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.
+ And we should not have this routine at all but use
+ the libelf library to read the old file and create the new
+ file.
+ The changed code is minimal and depends on prep set in m/prep.h
+ Erik Deumens
+ Quantum Theory Project
+ University of Florida
+ deumens@qtp.ufl.edu
+ Apr 23, 1996
+ */
#define OLD_SECTION_H(n) \
- (*(Elf32_Shdr *) ((byte *) old_section_h + old_file_h->e_shentsize * (n)))
+ (*(ElfW(Shdr) *) ((byte *) old_section_h + old_file_h->e_shentsize * (n)))
#define NEW_SECTION_H(n) \
- (*(Elf32_Shdr *) ((byte *) new_section_h + new_file_h->e_shentsize * (n)))
+ (*(ElfW(Shdr) *) ((byte *) new_section_h + new_file_h->e_shentsize * (n)))
#define OLD_PROGRAM_H(n) \
- (*(Elf32_Phdr *) ((byte *) old_program_h + old_file_h->e_phentsize * (n)))
+ (*(ElfW(Phdr) *) ((byte *) old_program_h + old_file_h->e_phentsize * (n)))
#define NEW_PROGRAM_H(n) \
- (*(Elf32_Phdr *) ((byte *) new_program_h + new_file_h->e_phentsize * (n)))
+ (*(ElfW(Phdr) *) ((byte *) new_program_h + new_file_h->e_phentsize * (n)))
#define PATCH_INDEX(n) \
do { \
/* Pointers to the file, program and section headers for the old and new
* files.
*/
- Elf32_Ehdr *old_file_h, *new_file_h;
- Elf32_Phdr *old_program_h, *new_program_h;
- Elf32_Shdr *old_section_h, *new_section_h;
+ ElfW(Ehdr) *old_file_h, *new_file_h;
+ ElfW(Phdr) *old_program_h, *new_program_h;
+ ElfW(Shdr) *old_section_h, *new_section_h;
/* Point to the section name table in the old file */
char *old_section_names;
- Elf32_Addr old_bss_addr, new_bss_addr;
- Elf32_Word old_bss_size, new_data2_size;
- Elf32_Off new_data2_offset;
- Elf32_Addr new_data2_addr;
+ ElfW(Addr) old_bss_addr, new_bss_addr;
+ ElfW(Word) old_bss_size, new_data2_size;
+ ElfW(Off) new_data2_offset;
+ ElfW(Addr) new_data2_addr;
int n, nn, old_bss_index, old_data_index, new_data2_index;
struct stat stat_buf;
/* Get pointers to headers & section names */
- old_file_h = (Elf32_Ehdr *) old_base;
- old_program_h = (Elf32_Phdr *) ((byte *) old_base + old_file_h->e_phoff);
- old_section_h = (Elf32_Shdr *) ((byte *) old_base + old_file_h->e_shoff);
+ old_file_h = (ElfW(Ehdr) *) old_base;
+ old_program_h = (ElfW(Phdr) *) ((byte *) old_base + old_file_h->e_phoff);
+ old_section_h = (ElfW(Shdr) *) ((byte *) old_base + old_file_h->e_shoff);
old_section_names = (char *) old_base
+ OLD_SECTION_H (old_file_h->e_shstrndx).sh_offset;
old_bss_addr = OLD_SECTION_H (old_bss_index).sh_addr;
old_bss_size = OLD_SECTION_H (old_bss_index).sh_size;
#if defined(emacs) || !defined(DEBUG)
- new_bss_addr = (Elf32_Addr) sbrk (0);
+ new_bss_addr = (ElfW(Addr)) sbrk (0);
#else
new_bss_addr = old_bss_addr + old_bss_size + 0x1234;
#endif
if (new_base == (caddr_t) -1)
fatal ("Can't mmap (%s): errno %d\n", new_name, errno);
- new_file_h = (Elf32_Ehdr *) new_base;
- new_program_h = (Elf32_Phdr *) ((byte *) new_base + old_file_h->e_phoff);
- new_section_h = (Elf32_Shdr *)
+ new_file_h = (ElfW(Ehdr) *) new_base;
+ new_program_h = (ElfW(Phdr) *) ((byte *) new_base + old_file_h->e_phoff);
+ new_section_h = (ElfW(Shdr) *)
((byte *) new_base + old_file_h->e_shoff + new_data2_size);
/* Make our new file, program and section headers as copies of the
{
/* Any section that was original placed AFTER the bss
section should now be off by NEW_DATA2_SIZE. */
- if (NEW_SECTION_H (nn).sh_offset >= new_data2_offset)
+#ifdef SOLARIS_POWERPC
+ /* 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
+ section start at the plt offset. The plt section is always
+ the one just before the bss section.
+ It would be better to put the new data section before
+ the .plt section, or use libelf instead.
+ Erik Deumens, deumens@qtp.ufl.edu. */
+ if (NEW_SECTION_H (nn).sh_offset
+ >= OLD_SECTION_H (old_bss_index-1).sh_offset)
NEW_SECTION_H (nn).sh_offset += new_data2_size;
+#else
+ if (round_up (NEW_SECTION_H (nn).sh_offset,
+ OLD_SECTION_H (old_bss_index).sh_addralign)
+ >= new_data2_offset)
+ NEW_SECTION_H (nn).sh_offset += new_data2_size;
+#endif
/* Any section that was originally placed after the section
header table should now be off by the size of one section
header table entry. */
memcpy (NEW_SECTION_H (nn).sh_offset + new_base, src,
NEW_SECTION_H (nn).sh_size);
+#ifdef __alpha__
+ /* Update Alpha COFF symbol table: */
+ if (strcmp (old_section_names + OLD_SECTION_H (n).sh_name, ".mdebug")
+ == 0)
+ {
+ pHDRR symhdr = (pHDRR) (NEW_SECTION_H (nn).sh_offset + new_base);
+
+ symhdr->cbLineOffset += new_data2_size;
+ symhdr->cbDnOffset += new_data2_size;
+ symhdr->cbPdOffset += new_data2_size;
+ symhdr->cbSymOffset += new_data2_size;
+ symhdr->cbOptOffset += new_data2_size;
+ symhdr->cbAuxOffset += new_data2_size;
+ symhdr->cbSsOffset += new_data2_size;
+ symhdr->cbSsExtOffset += new_data2_size;
+ symhdr->cbFdOffset += new_data2_size;
+ symhdr->cbRfdOffset += new_data2_size;
+ symhdr->cbExtOffset += new_data2_size;
+ }
+#endif /* __alpha__ */
+
/* 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)
{
- Elf32_Shdr *spt = &NEW_SECTION_H (nn);
+ ElfW(Shdr) *spt = &NEW_SECTION_H (nn);
unsigned int num = spt->sh_size / spt->sh_entsize;
- Elf32_Sym * sym = (Elf32_Sym *) (NEW_SECTION_H (nn).sh_offset +
+ ElfW(Sym) * sym = (ElfW(Sym) *) (NEW_SECTION_H (nn).sh_offset +
new_base);
for (; num--; sym++)
{
for (n = new_file_h->e_shnum - 1; n; n--)
{
byte *symnames;
- Elf32_Sym *symp, *symendp;
+ ElfW(Sym) *symp, *symendp;
if (NEW_SECTION_H (n).sh_type != SHT_DYNSYM
&& NEW_SECTION_H (n).sh_type != SHT_SYMTAB)
symnames = ((byte *) new_base
+ NEW_SECTION_H (NEW_SECTION_H (n).sh_link).sh_offset);
- symp = (Elf32_Sym *) (NEW_SECTION_H (n).sh_offset + new_base);
- symendp = (Elf32_Sym *) ((byte *)symp + NEW_SECTION_H (n).sh_size);
+ symp = (ElfW(Sym) *) (NEW_SECTION_H (n).sh_offset + new_base);
+ symendp = (ElfW(Sym) *) ((byte *)symp + NEW_SECTION_H (n).sh_size);
for (; symp < symendp; symp ++)
if (strcmp ((char *) (symnames + symp->st_name), "_end") == 0
that it can undo relocations performed by the runtime linker. */
for (n = new_file_h->e_shnum - 1; n; n--)
{
- Elf32_Shdr section = NEW_SECTION_H (n);
+ ElfW(Shdr) section = NEW_SECTION_H (n);
switch (section.sh_type) {
default:
break;
|| !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
".data1"))
{
- Elf32_Addr offset = NEW_SECTION_H (nn).sh_addr -
+ ElfW(Addr) offset = NEW_SECTION_H (nn).sh_addr -
NEW_SECTION_H (nn).sh_offset;
caddr_t reloc = old_base + section.sh_offset, end;
for (end = reloc + section.sh_size; reloc < end;
reloc += section.sh_entsize)
{
- Elf32_Addr addr = ((Elf32_Rel *) reloc)->r_offset - offset;
- memcpy (new_base + addr, old_base + addr, 4);
+ ElfW(Addr) addr = ((ElfW(Rel) *) reloc)->r_offset - offset;
+#ifdef __alpha__
+ /* The Alpha ELF binutils currently have a bug that
+ sometimes results in relocs that contain all
+ zeroes. Work around this for now... */
+ if (((ElfW(Rel) *) reloc)->r_offset == 0)
+ continue;
+#endif
+ memcpy (new_base + addr, old_base + addr, sizeof(ElfW(Addr)));
}
}
break;