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[4/7] LoongArch: Add gpr-num.h

Message ID 1665394340-13906-5-git-send-email-tangyouling@loongson.cn (mailing list archive)
State Not Applicable
Headers show
Series LoongArch: Switch to relative extable and other improvements | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch, async
bpf/vmtest-bpf-PR fail merge-conflict

Commit Message

Youling Tang Oct. 10, 2022, 9:32 a.m. UTC 
In subsequent patches we'll need to map the same GPR names to integer
constants so that we can use this to build metadata for exception
fixups.

The compiler treats gpr 0 as zero, not $r0, so set it separately to
.L__gpr_num_zero, otherwise the following assembly error will occur,

{standard input}: Assembler messages:
{standard input}:1074: Error: invalid operands (*UND* and *ABS* sections) for `<<'
{standard input}:1160: Error: invalid operands (*UND* and *ABS* sections) for `<<'
make[1]: *** [scripts/Makefile.build:249: fs/fcntl.o] Error 1

Signed-off-by: Youling Tang <tangyouling@loongson.cn>
---
 arch/loongarch/include/asm/gpr-num.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 arch/loongarch/include/asm/gpr-num.h
diff mbox series

Patch

diff --git a/arch/loongarch/include/asm/gpr-num.h b/arch/loongarch/include/asm/gpr-num.h
new file mode 100644
index 000000000000..e0941af20c7e
--- /dev/null
+++ b/arch/loongarch/include/asm/gpr-num.h
@@ -0,0 +1,22 @@ 
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GPR_NUM_H
+#define __ASM_GPR_NUM_H
+
+#ifdef __ASSEMBLY__
+
+	.equ	.L__gpr_num_zero, 0
+	.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
+	.equ	.L__gpr_num_$r\num, \num
+	.endr
+
+#else /* __ASSEMBLY__ */
+
+#define __DEFINE_ASM_GPR_NUMS					\
+"	.equ	.L__gpr_num_zero, 0\n"				\
+"	.irp	num,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31\n" \
+"	.equ	.L__gpr_num_$r\\num, \\num\n"			\
+"	.endr\n"						\
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ASM_GPR_NUM_H */