1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * This file is subject to the terms and conditions of the GNU General Public 4 * License. See the file "COPYING" in the main directory of this archive 5 * for more details. 6 * 7 * Copyright (C) 2020 Loongson Technology Co., Ltd. 8 */ 9 #ifndef _ASM_REGDEF_H 10 #define _ASM_REGDEF_H 11 12 #define zero $r0 /* wired zero */ 13 #define ra $r1 /* return address */ 14 #define tp $r2 15 #define sp $r3 /* stack pointer */ 16 #define a0 $r4 /* argument registers, a0/a1 reused as v0/v1 for return value */ 17 #define a1 $r5 18 #define a2 $r6 19 #define a3 $r7 20 #define a4 $r8 21 #define a5 $r9 22 #define a6 $r10 23 #define a7 $r11 24 #define t0 $r12 /* caller saved */ 25 #define t1 $r13 26 #define t2 $r14 27 #define t3 $r15 28 #define t4 $r16 29 #define t5 $r17 30 #define t6 $r18 31 #define t7 $r19 32 #define t8 $r20 33 #define u0 $r21 34 #define fp $r22 /* frame pointer */ 35 #define s0 $r23 /* callee saved */ 36 #define s1 $r24 37 #define s2 $r25 38 #define s3 $r26 39 #define s4 $r27 40 #define s5 $r28 41 #define s6 $r29 42 #define s7 $r30 43 #define s8 $r31 44 45 #endif /* _ASM_REGDEF_H */ 46