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authorUlrich Drepper <drepper@redhat.com>1998-09-13 08:25:53 +0000
committerUlrich Drepper <drepper@redhat.com>1998-09-13 08:25:53 +0000
commit2d09b95d5a6f8c4398197ddfb2a48be866ba6357 (patch)
tree47fa53e666ff6368cedaf216901922edea1e79b5 /sysdeps/powerpc/dl-machine.c
parentb39c6f8b7a847270f8b0a0c9f101535cce29d00e (diff)
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Update.
1998-09-13 18:04 Geoff Keating <geoffk@ozemail.com.au> * sysdeps/powerpc/dl-machine.c (PPC_DCBST,PPC_SYNC,PPC_ISYNC,PPC_ICBI): Don't mark asm `volatile'. (__elf_machine_runtime_setup): Clear the last partial block in the PLT from the data cache too. Assume it isn't in the instruction cache yet. (__elf_machine_fixup_plt): Clear the modified address from the caches.
Diffstat (limited to 'sysdeps/powerpc/dl-machine.c')
-rw-r--r--sysdeps/powerpc/dl-machine.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/sysdeps/powerpc/dl-machine.c b/sysdeps/powerpc/dl-machine.c
index 095a3f2..4b6205c 100644
--- a/sysdeps/powerpc/dl-machine.c
+++ b/sysdeps/powerpc/dl-machine.c
@@ -63,10 +63,10 @@
#define OPCODE_SLWI(ra,rs,sh) OPCODE_RLWINM(ra,rs,sh,0,31-sh)
-#define PPC_DCBST(where) asm volatile ("dcbst 0,%0" : : "r"(where))
-#define PPC_SYNC asm volatile ("sync")
-#define PPC_ISYNC asm volatile ("sync; isync")
-#define PPC_ICBI(where) asm volatile ("icbi 0,%0" : : "r"(where))
+#define PPC_DCBST(where) asm ("dcbst 0,%0" : : "r"(where) : "memory")
+#define PPC_SYNC asm ("sync" : : : "memory")
+#define PPC_ISYNC asm volatile ("sync; isync" : : : "memory")
+#define PPC_ICBI(where) asm ("icbi 0,%0" : : "r"(where) : "memory")
#define PPC_DIE asm volatile ("tweq 0,0")
/* Use this when you've modified some code, but it won't be in the
@@ -242,7 +242,9 @@ __elf_machine_runtime_setup (struct link_map *map, int lazy, int profile)
need to write the changes from the data cache to a
second-level unified cache, then make sure that stale data in
the instruction cache is removed. (In a multiprocessor
- system, the effect is more complex.)
+ system, the effect is more complex.) Most of the PLT shouldn't
+ be in the instruction cache, but there may be a little overlap
+ at the start and the end.
Assumes the cache line size is at least 32 bytes, or at least
that dcbst and icbi apply to 32-byte lines. At present, all
@@ -251,9 +253,10 @@ __elf_machine_runtime_setup (struct link_map *map, int lazy, int profile)
size_modified = lazy ? rel_offset_words : PLT_INITIAL_ENTRY_WORDS;
for (i = 0; i < size_modified; i+=8)
PPC_DCBST (plt + i);
+ PPC_DCBST (plt + size_modified-1);
PPC_SYNC;
- for (i = 0; i < size_modified; i+=8)
- PPC_ICBI (plt + i);
+ PPC_ICBI (plt);
+ PPC_ICBI (plt + size_modified-1);
PPC_ISYNC;
}
@@ -319,6 +322,7 @@ __elf_machine_fixup_plt(struct link_map *map, const Elf32_Rela *reloc,
+ 1
- PLT_LONGBRANCH_ENTRY_WORDS
+ PLT_INITIAL_ENTRY_WORDS)));
+ reloc_addr += 1; /* This is the modified address. */
}
}
MODIFIED_CODE (reloc_addr);