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authorMark Salter <msalter@redhat.com>2008-12-02 14:38:09 +0000
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-02 15:52:07 -0800
commit1122b19b8f4da2ee6d6b21780f86bea7957f641e (patch)
treebcdd0d1c4d12019bbf3a38f1d0d9147310bb11a0 /arch/mn10300
parent026bde120a161d9035502a47dd311bd572f6d31f (diff)
MN10300: Fix application of kernel module relocations
This fixes the MN10300 kernel module linking to match the toolchain. RELA relocs don't use the value at the location being relocated. This has been working because the tools always leave the value at the target location cleared. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/mn10300')
-rw-r--r--arch/mn10300/kernel/module.c35
1 files changed, 7 insertions, 28 deletions
diff --git a/arch/mn10300/kernel/module.c b/arch/mn10300/kernel/module.c
index 8fa36893df7a..6b287f2e8e84 100644
--- a/arch/mn10300/kernel/module.c
+++ b/arch/mn10300/kernel/module.c
@@ -1,6 +1,6 @@
/* MN10300 Kernel module helper routines
*
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2007, 2008 Red Hat, Inc. All Rights Reserved.
* Written by Mark Salter (msalter@redhat.com)
* - Derived from arch/i386/kernel/module.c
*
@@ -64,21 +64,6 @@ int module_frob_arch_sections(Elf_Ehdr *hdr,
return 0;
}
-static uint32_t reloc_get16(uint8_t *p)
-{
- return p[0] | (p[1] << 8);
-}
-
-static uint32_t reloc_get24(uint8_t *p)
-{
- return reloc_get16(p) | (p[2] << 16);
-}
-
-static uint32_t reloc_get32(uint8_t *p)
-{
- return reloc_get16(p) | (reloc_get16(p+2) << 16);
-}
-
static void reloc_put16(uint8_t *p, uint32_t val)
{
p[0] = val & 0xff;
@@ -144,25 +129,19 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
relocation = sym->st_value + rel[i].r_addend;
switch (ELF32_R_TYPE(rel[i].r_info)) {
- /* for the first four relocation types, we add the
- * adjustment into the value at the location given */
+ /* for the first four relocation types, we simply
+ * store the adjustment at the location given */
case R_MN10300_32:
- value = reloc_get32(location);
- value += relocation;
- reloc_put32(location, value);
+ reloc_put32(location, relocation);
break;
case R_MN10300_24:
- value = reloc_get24(location);
- value += relocation;
- reloc_put24(location, value);
+ reloc_put24(location, relocation);
break;
case R_MN10300_16:
- value = reloc_get16(location);
- value += relocation;
- reloc_put16(location, value);
+ reloc_put16(location, relocation);
break;
case R_MN10300_8:
- *location += relocation;
+ *location = relocation;
break;
/* for the next three relocation types, we write the