aboutsummaryrefslogtreecommitdiff
path: root/elf/dynamic-link.h
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1998-09-01 14:31:49 +0000
committerUlrich Drepper <drepper@redhat.com>1998-09-01 14:31:49 +0000
commit052b6a6c94cc330dfbc09ff7b5f03c943deb7ca2 (patch)
tree0ef4d2730e6e20141e3b669b8a3614193200f3fc /elf/dynamic-link.h
parent85c165befc61d049abe3cc443c275a210c569338 (diff)
downloadglibc-052b6a6c94cc330dfbc09ff7b5f03c943deb7ca2.tar
glibc-052b6a6c94cc330dfbc09ff7b5f03c943deb7ca2.tar.gz
glibc-052b6a6c94cc330dfbc09ff7b5f03c943deb7ca2.tar.bz2
glibc-052b6a6c94cc330dfbc09ff7b5f03c943deb7ca2.zip
Update.
1998-08-09 Geoff Keating <geoffk@ozemail.com.au> * sysdeps/powerpc/Makefile [subdir=elf]: Add new files split out of dl-machine.h. * sysdeps/powerpc/dl-machine.c: New file. * sysdeps/powerpc/dl-machine.h: Move much stuff into separate files. Revise ELF_PREFERRED_ADDRESS to take account of the new mapping information (fixes bug involving huge bloated web browser). Set ELF_MACHINE_PLTREL_OVERLAP. * sysdeps/powerpc/dl-start.S: New file. * elf/dl-load.c (_dl_map_object_from_fd): Initialise l_map_start, l_map_end. * elf/do-rel.h: Call elf_machine_rel only once (to save space). * elf/dynamic-link.h: Allow PLT relocs to be in the middle of the others. Call elf_dynamic_do_##reloc only once (to save even more space). * elf/link.h: Add new members l_map_start and l_map_end to keep track of the memory map. * elf/rtld.c (_dl_start): Initialise l_map_start for ld.so and the executable. 1998-09-01 11:53 Ulrich Drepper <drepper@cygnus.com> * debug/Makefile (catchsegv): We need not rewrite SOVER anymore. Reported by Andreas Jaeger. * posix/glob.h: Use __size_t instead of size_t in definitions and make sure this is defined. * manual/locale.texi: Almost complete rewrite. Document more functions
Diffstat (limited to 'elf/dynamic-link.h')
-rw-r--r--elf/dynamic-link.h91
1 files changed, 53 insertions, 38 deletions
diff --git a/elf/dynamic-link.h b/elf/dynamic-link.h
index 9d7ae3d3fa..9e2ca03543 100644
--- a/elf/dynamic-link.h
+++ b/elf/dynamic-link.h
@@ -83,60 +83,75 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn,
#ifdef ELF_MACHINE_PLTREL_OVERLAP
#define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, lazy) \
do { \
- ElfW(Addr) r_addr, r_size, p_addr, p_size; \
+ struct { ElfW(Addr) start, size; int lazy; } ranges[3]; \
+ int ranges_index; \
+ \
+ ranges[0].lazy = ranges[2].lazy = 0; \
+ ranges[1].lazy = 1; \
+ ranges[0].size = ranges[1].size = ranges[2].size = 0; \
+ \
if ((map)->l_info[DT_##RELOC]) \
{ \
- r_addr = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \
- r_size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \
- if ((map)->l_info[DT_PLTREL] && \
- (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \
- { \
- p_addr = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \
- p_size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
- if (r_addr <= p_addr && r_addr+r_size > p_addr) \
- { \
- ElfW(Addr) r2_addr, r2_size; \
- r2_addr = p_addr + p_size; \
- if (r2_addr < r_addr + r_size) \
- { \
- r2_size = r_addr + r_size - r2_addr; \
- elf_dynamic_do_##reloc ((map), r2_addr, r2_size, 0); \
- } \
- r_size = p_addr - r_addr; \
- } \
- } \
- \
- elf_dynamic_do_##reloc ((map), r_addr, r_size, 0); \
- if (p_addr) \
- elf_dynamic_do_##reloc ((map), p_addr, p_size, (lazy)); \
+ ranges[0].start = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \
+ ranges[0].size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \
} \
- else if ((map)->l_info[DT_PLTREL] && \
- (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \
- { \
- p_addr = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \
- p_size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
\
- elf_dynamic_do_##reloc ((map), p_addr, p_size, (lazy)); \
+ if ((lazy) \
+ && (map)->l_info[DT_PLTREL] \
+ && (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \
+ { \
+ ranges[1].start = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \
+ ranges[1].size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
+ ranges[2].start = ranges[1].start + ranges[1].size; \
+ ranges[2].size = ranges[0].start + ranges[0].size - ranges[2].start; \
+ ranges[0].size = ranges[1].start - ranges[0].start; \
} \
+ \
+ for (ranges_index = 0; ranges_index < 3; ++ranges_index) \
+ elf_dynamic_do_##reloc ((map), \
+ ranges[ranges_index].start, \
+ ranges[ranges_index].size, \
+ ranges[ranges_index].lazy); \
} while (0)
#else
#define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, lazy) \
do { \
+ struct { ElfW(Addr) start, size; int lazy; } ranges[2]; \
+ int ranges_index; \
+ ranges[0].lazy = 0; \
+ ranges[1].lazy = 1; \
+ ranges[0].size = ranges[1].size = 0; \
+ ranges[0].start = 0; \
+ \
if ((map)->l_info[DT_##RELOC]) \
{ \
- ElfW(Addr) r_addr, r_size; \
- r_addr = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \
- r_size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \
- elf_dynamic_do_##reloc ((map), r_addr, r_size, 0); \
+ ranges[0].start = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \
+ ranges[0].size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \
} \
if ((map)->l_info[DT_PLTREL] && \
(map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \
{ \
- ElfW(Addr) p_addr, p_size; \
- p_addr = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \
- p_size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
- elf_dynamic_do_##reloc ((map), p_addr, p_size, (lazy)); \
+ ElfW(Addr) start = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \
+ \
+ if (lazy \
+ /* This test does not only detect whether the relocation \
+ sections are in the right order, it also checks whether \
+ there is a DT_REL/DT_RELA section. */ \
+ || ranges[0].start + ranges[0].size != start) \
+ { \
+ ranges[1].start = start; \
+ ranges[1].size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
+ } \
+ else \
+ /* Combine processing the sections. */ \
+ ranges[0].size += (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
} \
+ \
+ for (ranges_index = 0; ranges_index < 2; ++ranges_index) \
+ elf_dynamic_do_##reloc ((map), \
+ ranges[ranges_index].start, \
+ ranges[ranges_index].size, \
+ ranges[ranges_index].lazy); \
} while (0)
#endif