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f7a9f785 1/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
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2 This file is part of the GNU C Library.
3 Contributed by Ralf Baechle <ralf@gnu.org>.
4
5 The GNU C Library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
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9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3214b89b 13 Lesser General Public License for more details.
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3214b89b 15 You should have received a copy of the GNU Lesser General Public
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16 License along with the GNU C Library. If not, see
17 <http://www.gnu.org/licenses/>. */
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18
19#ifndef _SYS_REGDEF_H
20#define _SYS_REGDEF_H
21
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22#include <sgidefs.h>
23
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24/*
25 * Symbolic register names for 32 bit ABI
26 */
27#define zero $0 /* wired zero */
28#define AT $1 /* assembler temp - uppercase because of ".set at" */
29#define v0 $2 /* return value */
30#define v1 $3
31#define a0 $4 /* argument registers */
32#define a1 $5
33#define a2 $6
34#define a3 $7
b8ddf7a1 35#if _MIPS_SIM != _ABIO32
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36#define a4 $8
37#define a5 $9
38#define a6 $10
39#define a7 $11
40#define t0 $12
41#define t1 $13
42#define t2 $14
43#define t3 $15
44#define ta0 a4
45#define ta1 a5
46#define ta2 a6
47#define ta3 a7
b8ddf7a1 48#else /* if _MIPS_SIM == _ABIO32 */
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49#define t0 $8 /* caller saved */
50#define t1 $9
51#define t2 $10
52#define t3 $11
53#define t4 $12
54#define t5 $13
55#define t6 $14
56#define t7 $15
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57#define ta0 t4
58#define ta1 t5
59#define ta2 t6
60#define ta3 t7
b8ddf7a1 61#endif /* _MIPS_SIM == _ABIO32 */
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62#define s0 $16 /* callee saved */
63#define s1 $17
64#define s2 $18
65#define s3 $19
66#define s4 $20
67#define s5 $21
68#define s6 $22
69#define s7 $23
70#define t8 $24 /* caller saved */
71#define t9 $25
72#define jp $25 /* PIC jump register */
73#define k0 $26 /* kernel scratch */
74#define k1 $27
75#define gp $28 /* global pointer */
76#define sp $29 /* stack pointer */
77#define fp $30 /* frame pointer */
78#define s8 $30 /* same like fp! */
79#define ra $31 /* return address */
80
81#endif /* _SYS_REGDEF_H */