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| author | Roland McGrath <roland@gnu.org> | 2002-09-27 03:23:45 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 2002-09-27 03:23:45 +0000 |
| commit | 8243d6f1b70a506419329c81d862b80e9104ca9b (patch) | |
| tree | 162d6357e85a897c5710e4945d3e11c503811928 /sysdeps/sparc/sparc64/dl-machine.h | |
| parent | 9a88a2d7b35b7f08c07a9a189a176e7ca49d82b4 (diff) | |
| download | glibc-8243d6f1b70a506419329c81d862b80e9104ca9b.tar.gz glibc-8243d6f1b70a506419329c81d862b80e9104ca9b.tar.xz glibc-8243d6f1b70a506419329c81d862b80e9104ca9b.zip | |
2002-09-24 Jakub Jelinek <jakub@redhat.com>
* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_load_address): Don't rely on *r_offset of R_SPARC_RELATIVE reloc in .got to contain the addend. * sysdeps/sparc/sparc64/dl-machine.h (elf_machine_load_address): Use the same l_addr computation. * sysdeps/sparc/sparc64/configure.in: Removed. * sysdeps/sparc/sparc64/configure: Removed. * config.h.in (SPARC64_DYNAMIC_BEFORE_GOT): Remove.
Diffstat (limited to 'sysdeps/sparc/sparc64/dl-machine.h')
| -rw-r--r-- | sysdeps/sparc/sparc64/dl-machine.h | 53 |
1 files changed, 15 insertions, 38 deletions
diff --git a/sysdeps/sparc/sparc64/dl-machine.h b/sysdeps/sparc/sparc64/dl-machine.h index fba323dece..802364b662 100644 --- a/sysdeps/sparc/sparc64/dl-machine.h +++ b/sysdeps/sparc/sparc64/dl-machine.h @@ -68,44 +68,21 @@ elf_machine_dynamic (void) static inline Elf64_Addr elf_machine_load_address (void) { - register Elf64_Addr *elf_pic_register __asm__("%l7"); - - LOAD_PIC_REG (elf_pic_register); - - /* We used to utilize the fact that a local .got entry will - be partially initialized at startup awaiting its RELATIVE - fixup: - - Elf64_Addr pc, la; - - __asm("sethi %%hi(.Load_address), %1\n" - ".Load_address:\n\t" - "rd %%pc, %0\n\t" - "or %1, %%lo(.Load_address), %1\n\t" - : "=r"(pc), "=r"(la)); - - return pc - *(Elf64_Addr *)(elf_pic_register + la); - - Unfortunately as binutils tries to work around Solaris - dynamic linker bug which resolves R_SPARC_RELATIVE as X += B + A - instead of X = B + A this does not work any longer, since ld - clears it. - - The following method relies on the fact that sparcv9 ABI maximal - page length is 1MB and all ELF segments on sparc64 are aligned - to 1MB. Also assumes that they both fit into the first 1MB of - the RW segment. This should be true for some time unless ld.so - grows too much, at the moment the whole stripped ld.so is 128KB - and only smaller part of that is in the RW segment. */ - -#ifdef SPARC64_DYNAMIC_BEFORE_GOT - /* If _DYNAMIC comes before _GLOBAL_OFFSET_TABLE_... */ - return ((Elf64_Addr)elf_pic_register - *elf_pic_register) & ~0xfffffUL; -#else - /* ... and if _DYNAMIC comes after _GLOBAL_OFFSET_TABLE_. */ - return ((Elf64_Addr)elf_pic_register - *elf_pic_register + 0xfffff) - & ~0xfffffUL; -#endif + register Elf32_Addr *pc __asm ("%o7"); + register Elf64_Addr *got __asm ("%l7"); + + __asm ("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" + "call 1f\n\t" + " add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t" + "call _DYNAMIC\n\t" + "call _GLOBAL_OFFSET_TABLE_\n" + "1:\tadd %1, %0, %1\n\t" : "=r" (pc), "=r" (got)); + + /* got is now l_addr + _GLOBAL_OFFSET_TABLE_ + *got is _DYNAMIC + pc[2]*4 is l_addr + _DYNAMIC - (long)pc - 8 + pc[3]*4 is l_addr + _GLOBAL_OFFSET_TABLE_ - (long)pc - 12 */ + return (Elf64_Addr) got - *got + (Elf32_Sword) ((pc[2] - pc[3]) * 4) - 4; } /* We have 4 cases to handle. And we code different code sequences |