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authorVineet Gupta <vgupta@synopsys.com>2016-09-13 02:50:50 +0300
committerVineet Gupta <vgupta@synopsys.com>2016-10-01 00:48:19 +0300
commit94f4fb0841bfa5c1088a1b3a879a65bdd675ecd2 (patch)
treedd237a8e66238f0607ba946b9a3cf65bcbc7e8db /arch/arc
parente0d5321faca1133cbb34a3a780d62a3a0814b6dc (diff)
downloadlinux-94f4fb0841bfa5c1088a1b3a879a65bdd675ecd2.tar.xz
ARC: module: support R_ARC_32_PCREL relocation
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc')
-rw-r--r--arch/arc/include/asm/elf.h3
-rw-r--r--arch/arc/kernel/module.c6
2 files changed, 5 insertions, 4 deletions
diff --git a/arch/arc/include/asm/elf.h b/arch/arc/include/asm/elf.h
index 51a99e25fe33..7096f97a1434 100644
--- a/arch/arc/include/asm/elf.h
+++ b/arch/arc/include/asm/elf.h
@@ -23,8 +23,7 @@
/* ARC Relocations (kernel Modules only) */
#define R_ARC_32 0x4
#define R_ARC_32_ME 0x1B
-#define R_ARC_S25H_PCREL 0x10
-#define R_ARC_S25W_PCREL 0x11
+#define R_ARC_32_PCREL 0x31
/*to set parameters in the core dumps */
#define ELF_ARCH EM_ARCOMPACT
diff --git a/arch/arc/kernel/module.c b/arch/arc/kernel/module.c
index 376e04622962..576a238434a1 100644
--- a/arch/arc/kernel/module.c
+++ b/arch/arc/kernel/module.c
@@ -106,10 +106,12 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
*/
relo_type = ELF32_R_TYPE(rel_entry[i].r_info);
- if (likely(R_ARC_32_ME == relo_type))
+ if (likely(R_ARC_32_ME == relo_type)) /* ME ( S + A ) */
arc_write_me((unsigned short *)location, relocation);
- else if (R_ARC_32 == relo_type)
+ else if (R_ARC_32 == relo_type) /* ( S + A ) */
*((Elf32_Addr *) location) = relocation;
+ else if (R_ARC_32_PCREL == relo_type) /* ( S + A ) - PDATA ) */
+ *((Elf32_Addr *) location) = relocation - location;
else
goto relo_err;