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* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_fixup_plt):

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Always perform the flush during RTLD_BOOTSTRAP.
This commit is contained in:
David S. Miller 1998-05-23 04:35:34 +00:00
parent 0d1f3079f1
commit 1f5ed31e30
2 changed files with 9 additions and 4 deletions
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5
ChangeLog.SPARC
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@ -1,3 +1,8 @@
1998-05-23 David S. Miller <davem@dm.cobaltmicro.com>
* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_fixup_plt):
Always perform the flush during RTLD_BOOTSTRAP.
1998-05-21 David S. Miller <davem@dm.cobaltmicro.com>
* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list: Add

8
sysdeps/sparc/sparc32/dl-machine.h
View File

@ -274,6 +274,10 @@ elf_machine_fixup_plt (struct link_map *map, const Elf32_Rela *reloc,
if we execute it and hw does not support it. */
__asm ("" : "=r" (hwcap) : "0" (hwcap));
do_flush = (!hwcap || (*hwcap & HWCAP_SPARC_FLUSH));
#else
/* Unfortunately, this is necessary, so that we can ensure
ld.so will not execute corrupt PLT entry instructions. */
const int do_flush = 1;
#endif
/* For thread safety, write the instructions from the bottom and
@ -282,16 +286,12 @@ elf_machine_fixup_plt (struct link_map *map, const Elf32_Rela *reloc,
But we also can't tell if we _can_ use flush, so don't. */
reloc_addr[2] = OPCODE_JMP_G1 | (value & 0x3ff);
#ifndef RTLD_BOOTSTRAP
if (do_flush)
__asm __volatile ("flush %0+8" : : "r"(reloc_addr));
#endif
reloc_addr[1] = OPCODE_SETHI_G1 | (value >> 10);
#ifndef RTLD_BOOTSTRAP
if (do_flush)
__asm __volatile ("flush %0+4" : : "r"(reloc_addr));
#endif
}
#ifdef RESOLVE