Commit 24da0249 authored Jun 29, 2023 by WANG Rui Committed by Huacai Chen Jun 29, 2023

LoongArch: extable: Also recognize ABI names of registers



When the kernel is compiled with LLVM, the register names being handled
during exception fixup building are ABI names instead of bare $rNN
style. Add mapping for the ABI names for LLVM compatibility.

Signed-off-by: WANG Rui <wangrui@loongson.cn>
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

parent 414cefc7

arch/loongarch/include/asm/gpr-num.h

+30 −0

Original line number	Diff line number	Diff line
		@@ -9,6 +9,22 @@
		.equ .L__gpr_num_$r\num, \num
		.endr

		/* ABI names of registers */
		.equ .L__gpr_num_$ra, 1
		.equ .L__gpr_num_$tp, 2
		.equ .L__gpr_num_$sp, 3
		.irp num,0,1,2,3,4,5,6,7
		.equ .L__gpr_num_$a\num, 4 + \num
		.endr
		.irp num,0,1,2,3,4,5,6,7,8
		.equ .L__gpr_num_$t\num, 12 + \num
		.endr
		.equ .L__gpr_num_$s9, 22
		.equ .L__gpr_num_$fp, 22
		.irp num,0,1,2,3,4,5,6,7,8
		.equ .L__gpr_num_$s\num, 23 + \num
		.endr

		#else /* __ASSEMBLY__ */

		#define __DEFINE_ASM_GPR_NUMS \
		@@ -16,6 +32,20 @@
		" .irp num,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31\n" \
		" .equ .L__gpr_num_$r\\num, \\num\n" \
		" .endr\n" \
		" .equ .L__gpr_num_$ra, 1\n" \
		" .equ .L__gpr_num_$tp, 2\n" \
		" .equ .L__gpr_num_$sp, 3\n" \
		" .irp num,0,1,2,3,4,5,6,7\n" \
		" .equ .L__gpr_num_$a\\num, 4 + \\num\n" \
		" .endr\n" \
		" .irp num,0,1,2,3,4,5,6,7,8\n" \
		" .equ .L__gpr_num_$t\\num, 12 + \\num\n" \
		" .endr\n" \
		" .equ .L__gpr_num_$s9, 22\n" \
		" .equ .L__gpr_num_$fp, 22\n" \
		" .irp num,0,1,2,3,4,5,6,7,8\n" \
		" .equ .L__gpr_num_$s\\num, 23 + \\num\n" \
		" .endr\n" \

		#endif /* __ASSEMBLY__ */