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Unverified Commit 4aad074c authored by Zong Li's avatar Zong Li Committed by Palmer Dabbelt
Browse files

RISC-V: Support SUB32 relocation type in kernel module 



Signed-off-by: default avatarZong Li <zong@andestech.com>
Signed-off-by: default avatarPalmer Dabbelt <palmer@sifive.com>
parent 8e691b16

arch/riscv/kernel/module.c

+8 −0
Original line number Diff line number Diff line
@@ -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,