diff options
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/kernel/module.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/riscv/kernel/module.c b/arch/riscv/kernel/module.c index be717bd7cea7..3f2730840c25 100644 --- a/arch/riscv/kernel/module.c +++ b/arch/riscv/kernel/module.c @@ -141,6 +141,27 @@ static int apply_r_riscv_call_plt_rela(struct module *me, u32 *location, return 0; } +static int apply_r_riscv_call_rela(struct module *me, u32 *location, + Elf_Addr v) +{ + s64 offset = (void *)v - (void *)location; + s32 fill_v = offset; + u32 hi20, lo12; + + if (offset != fill_v) { + pr_err( + "%s: target %016llx can not be addressed by the 32-bit offset from PC = %p\n", + me->name, v, location); + return -EINVAL; + } + + hi20 = (offset + 0x800) & 0xfffff000; + lo12 = (offset - hi20) & 0xfff; + *location = (*location & 0xfff) | hi20; + *(location + 1) = (*(location + 1) & 0xfffff) | (lo12 << 20); + return 0; +} + static int apply_r_riscv_relax_rela(struct module *me, u32 *location, Elf_Addr v) { @@ -157,6 +178,7 @@ static int (*reloc_handlers_rela[]) (struct module *me, u32 *location, [R_RISCV_PCREL_LO12_S] = apply_r_riscv_pcrel_lo12_s_rela, [R_RISCV_GOT_HI20] = apply_r_riscv_got_hi20_rela, [R_RISCV_CALL_PLT] = apply_r_riscv_call_plt_rela, + [R_RISCV_CALL] = apply_r_riscv_call_rela, [R_RISCV_RELAX] = apply_r_riscv_relax_rela, }; |