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openrisc: Add R_OR1K_32_PCREL relocation type module support

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[ Upstream commit 9d0cb6d00b ]

To ensure the proper functioning of the jump_label test module, this patch
adds support for the R_OR1K_32_PCREL relocation type for any modules. The
implementation calculates the PC-relative offset by subtracting the
instruction location from the target value and stores the result at the
specified location.

Signed-off-by: chenmiao <chenmiao.ku@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
chenmiao 2025-09-05 18:12:56 +00:00 committed by Greg Kroah-Hartman
parent 317d3bbc22
commit 483886e1f7
1 changed files with 4 additions and 0 deletions
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4
arch/openrisc/kernel/module.c
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@ -55,6 +55,10 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
value |= *location & 0xfc000000;
*location = value;
break;
case R_OR1K_32_PCREL:
value -= (uint32_t)location;
*location = value;
break;
case R_OR1K_AHI16:
/* Adjust the operand to match with a signed LO16. */
value += 0x8000;