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Message-Id: <20230625095644.3156349-3-kernel@xen0n.name>
Date: Sun, 25 Jun 2023 17:56:38 +0800
From: WANG Xuerui <kernel@...0n.name>
To: Huacai Chen <chenhuacai@...nel.org>
Cc: WANG Rui <wangrui@...ngson.cn>, Xi Ruoyao <xry111@...111.site>,
loongarch@...ts.linux.dev, linux-kbuild@...r.kernel.org,
llvm@...ts.linux.dev, linux-kernel@...r.kernel.org,
WANG Xuerui <git@...0n.name>
Subject: [PATCH v3 2/8] LoongArch: extable: Also recognize ABI names of registers
From: WANG Rui <wangrui@...ngson.cn>
When the kernel is compiled with LLVM, the register names being handled
during exception fixup building are ABI names instead of bare $rNN
style. Add mapping for the ABI names for LLVM compatibility.
Signed-off-by: WANG Rui <wangrui@...ngson.cn>
Signed-off-by: WANG Xuerui <git@...0n.name>
---
arch/loongarch/include/asm/gpr-num.h | 30 ++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/arch/loongarch/include/asm/gpr-num.h b/arch/loongarch/include/asm/gpr-num.h
index e0941af20c7e..996038da806d 100644
--- a/arch/loongarch/include/asm/gpr-num.h
+++ b/arch/loongarch/include/asm/gpr-num.h
@@ -9,6 +9,22 @@
.equ .L__gpr_num_$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__ */
--
2.40.0
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