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authorZong Li <zong@andestech.com>2018-03-15 16:50:49 +0800
committerPalmer Dabbelt <palmer@sifive.com>2018-04-02 20:00:55 -0700
commit4aad074c9c1d1302c504e1a26fe434878fe08cd5 (patch)
tree24a42d58b6bd1ee876314d2a6ec9c7caf7bbb4d1 /arch/riscv
parent8e691b16769d233f8a8b668dc7fad783459e4573 (diff)
downloadlinux-4aad074c9c1d1302c504e1a26fe434878fe08cd5.tar.bz2
RISC-V: Support SUB32 relocation type in kernel module
Signed-off-by: Zong Li <zong@andestech.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/kernel/module.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/riscv/kernel/module.c b/arch/riscv/kernel/module.c
index 73ea36c73d3b..5dddba301d0a 100644
--- a/arch/riscv/kernel/module.c
+++ b/arch/riscv/kernel/module.c
@@ -256,6 +256,13 @@ static int apply_r_riscv_add32_rela(struct module *me, u32 *location,
return 0;
}
+static int apply_r_riscv_sub32_rela(struct module *me, u32 *location,
+ Elf_Addr v)
+{
+ *(u32 *)location -= (*(u32 *)v);
+ return 0;
+}
+
static int (*reloc_handlers_rela[]) (struct module *me, u32 *location,
Elf_Addr v) = {
[R_RISCV_64] = apply_r_riscv_64_rela,
@@ -275,6 +282,7 @@ static int (*reloc_handlers_rela[]) (struct module *me, u32 *location,
[R_RISCV_RELAX] = apply_r_riscv_relax_rela,
[R_RISCV_ALIGN] = apply_r_riscv_align_rela,
[R_RISCV_ADD32] = apply_r_riscv_add32_rela,
+ [R_RISCV_SUB32] = apply_r_riscv_sub32_rela,
};
int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,