From: Mark Salter Date: Tue, 2 Dec 2008 14:38:09 +0000 (+0000) Subject: MN10300: Fix application of kernel module relocations X-Git-Tag: v2.6.28-rc8~77 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=1122b19b8f4da2ee6d6b21780f86bea7957f641e;p=linux-2.6-omap-h63xx.git 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 Signed-off-by: David Howells Signed-off-by: Linus Torvalds --- diff --git a/arch/mn10300/kernel/module.c b/arch/mn10300/kernel/module.c index 8fa36893df7..6b287f2e8e8 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