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| author | Stafford Horne <shorne@gmail.com> | 2024-04-11 18:23:25 +0200 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2024-04-15 16:20:39 +0200 |
| commit | 23c6e901c7112295d5ff0e1d90fed7be102433b9 (patch) | |
| tree | de9d5ac666bed8a13ca48606f33a7e4fbd59d759 /arch/openrisc | |
| parent | openrisc: Define openrisc relocation types (diff) | |
| download | linux-23c6e901c7112295d5ff0e1d90fed7be102433b9.tar.xz linux-23c6e901c7112295d5ff0e1d90fed7be102433b9.zip | |
openrisc: Add support for more module relocations
When testing modules in OpenRISC I found R_OR1K_AHI16 (signed adjusted
high 16-bit) and R_OR1K_SLO16 (split low 16-bit) relocations are used in
modules but not implemented yet.
This patch implements the relocations. I have tested with a few modules.
Signed-off-by: Stafford Horne <shorne@gmail.com>
Diffstat (limited to 'arch/openrisc')
| -rw-r--r-- | arch/openrisc/kernel/module.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/openrisc/kernel/module.c b/arch/openrisc/kernel/module.c index 292f0afe27b9..c9ff4c4a0b29 100644 --- a/arch/openrisc/kernel/module.c +++ b/arch/openrisc/kernel/module.c @@ -55,6 +55,16 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, value |= *location & 0xfc000000; *location = value; break; + case R_OR1K_AHI16: + /* Adjust the operand to match with a signed LO16. */ + value += 0x8000; + *((uint16_t *)location + 1) = value >> 16; + break; + case R_OR1K_SLO16: + /* Split value lower 16-bits. */ + value = ((value & 0xf800) << 10) | (value & 0x7ff); + *location = (*location & ~0x3e007ff) | value; + break; default: pr_err("module %s: Unknown relocation: %u\n", me->name, ELF32_R_TYPE(rel[i].r_info)); |