1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1985 MIPS Computer Systems, Inc.
7 * Copyright (C) 1994, 95, 99, 2003 by Ralf Baechle
8 * Copyright (C) 1990 - 1992, 1999 Silicon Graphics, Inc.
9 * Copyright (C) 2011 Wind River Systems,
10 *   written by Ralf Baechle <ralf@linux-mips.org>
11 */
12#ifndef _ASM_REGDEF_H
13#define _ASM_REGDEF_H
14
15#include <asm/sgidefs.h>
16
17#if _MIPS_SIM == _MIPS_SIM_ABI32
18
19/*
20 * Symbolic register names for 32 bit ABI
21 */
22#define zero	$0	/* wired zero */
23#define AT	$1	/* assembler temp  - uppercase because of ".set at" */
24#define v0	$2	/* return value */
25#define v1	$3
26#define a0	$4	/* argument registers */
27#define a1	$5
28#define a2	$6
29#define a3	$7
30#define t0	$8	/* caller saved */
31#define t1	$9
32#define t2	$10
33#define t3	$11
34#define t4	$12
35#define ta0	$12
36#define t5	$13
37#define ta1	$13
38#define t6	$14
39#define ta2	$14
40#define t7	$15
41#define ta3	$15
42#define s0	$16	/* callee saved */
43#define s1	$17
44#define s2	$18
45#define s3	$19
46#define s4	$20
47#define s5	$21
48#define s6	$22
49#define s7	$23
50#define t8	$24	/* caller saved */
51#define t9	$25
52#define jp	$25	/* PIC jump register */
53#define k0	$26	/* kernel scratch */
54#define k1	$27
55#define gp	$28	/* global pointer */
56#define sp	$29	/* stack pointer */
57#define fp	$30	/* frame pointer */
58#define s8	$30	/* same like fp! */
59#define ra	$31	/* return address */
60
61#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
62
63#if _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32
64
65#define zero	$0	/* wired zero */
66#define AT	$at	/* assembler temp - uppercase because of ".set at" */
67#define v0	$2	/* return value - caller saved */
68#define v1	$3
69#define a0	$4	/* argument registers */
70#define a1	$5
71#define a2	$6
72#define a3	$7
73#define a4	$8	/* arg reg 64 bit; caller saved in 32 bit */
74#define ta0	$8
75#define a5	$9
76#define ta1	$9
77#define a6	$10
78#define ta2	$10
79#define a7	$11
80#define ta3	$11
81#define t0	$12	/* caller saved */
82#define t1	$13
83#define t2	$14
84#define t3	$15
85#define s0	$16	/* callee saved */
86#define s1	$17
87#define s2	$18
88#define s3	$19
89#define s4	$20
90#define s5	$21
91#define s6	$22
92#define s7	$23
93#define t8	$24	/* caller saved */
94#define t9	$25	/* callee address for PIC/temp */
95#define jp	$25	/* PIC jump register */
96#define k0	$26	/* kernel temporary */
97#define k1	$27
98#define gp	$28	/* global pointer - caller saved for PIC */
99#define sp	$29	/* stack pointer */
100#define fp	$30	/* frame pointer */
101#define s8	$30	/* callee saved */
102#define ra	$31	/* return address */
103
104#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 */
105
106#endif /* _ASM_REGDEF_H */
107