1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
4  */
5 #ifndef _ASM_REGDEF_H
6 #define _ASM_REGDEF_H
7 
8 #define zero	$r0	/* wired zero */
9 #define ra	$r1	/* return address */
10 #define tp	$r2
11 #define sp	$r3	/* stack pointer */
12 #define a0	$r4	/* argument registers, a0/a1 reused as v0/v1 for return value */
13 #define a1	$r5
14 #define a2	$r6
15 #define a3	$r7
16 #define a4	$r8
17 #define a5	$r9
18 #define a6	$r10
19 #define a7	$r11
20 #define t0	$r12	/* caller saved */
21 #define t1	$r13
22 #define t2	$r14
23 #define t3	$r15
24 #define t4	$r16
25 #define t5	$r17
26 #define t6	$r18
27 #define t7	$r19
28 #define t8	$r20
29 #define u0	$r21
30 #define fp	$r22	/* frame pointer */
31 #define s0	$r23	/* callee saved */
32 #define s1	$r24
33 #define s2	$r25
34 #define s3	$r26
35 #define s4	$r27
36 #define s5	$r28
37 #define s6	$r29
38 #define s7	$r30
39 #define s8	$r31
40 
41 #endif /* _ASM_REGDEF_H */
42