Commit 23c6e901 authored by Stafford Horne's avatar Stafford Horne
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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: default avatarStafford Horne <shorne@gmail.com>
parent 26f53f23

arch/openrisc/kernel/module.c

+10 −0
Original line number Diff line number Diff line
@@ -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));