1 /* Copyright (C) 1997-2021 Free Software Foundation, Inc.
2    This file is part of the GNU C Library.
3 
4    The GNU C Library is free software; you can redistribute it and/or
5    modify it under the terms of the GNU Lesser General Public
6    License as published by the Free Software Foundation; either
7    version 2.1 of the License, or (at your option) any later version.
8 
9    The GNU C Library is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12    Lesser General Public License for more details.
13 
14    You should have received a copy of the GNU Lesser General Public
15    License along with the GNU C Library.  If not, see
16    <https://www.gnu.org/licenses/>.  */
17 
18 #ifndef _SYS_REGDEF_H
19 #define _SYS_REGDEF_H
20 
21 #include <sgidefs.h>
22 
23 /*
24  * Symbolic register names for 32 bit ABI
25  */
26 #define zero    $0      /* wired zero */
27 #define AT      $1      /* assembler temp  - uppercase because of ".set at" */
28 #define v0      $2      /* return value */
29 #define v1      $3
30 #define a0      $4      /* argument registers */
31 #define a1      $5
32 #define a2      $6
33 #define a3      $7
34 #if _MIPS_SIM != _ABIO32
35 #define a4      $8
36 #define a5      $9
37 #define a6      $10
38 #define a7      $11
39 #define t0      $12
40 #define t1      $13
41 #define t2      $14
42 #define t3      $15
43 #define ta0     a4
44 #define ta1     a5
45 #define ta2     a6
46 #define ta3     a7
47 #else /* if _MIPS_SIM == _ABIO32 */
48 #define t0      $8      /* caller saved */
49 #define t1      $9
50 #define t2      $10
51 #define t3      $11
52 #define t4      $12
53 #define t5      $13
54 #define t6      $14
55 #define t7      $15
56 #define ta0     t4
57 #define ta1     t5
58 #define ta2     t6
59 #define ta3     t7
60 #endif /* _MIPS_SIM == _ABIO32 */
61 #define s0      $16     /* callee saved */
62 #define s1      $17
63 #define s2      $18
64 #define s3      $19
65 #define s4      $20
66 #define s5      $21
67 #define s6      $22
68 #define s7      $23
69 #define t8      $24     /* caller saved */
70 #define t9      $25
71 #define jp      $25     /* PIC jump register */
72 #define k0      $26     /* kernel scratch */
73 #define k1      $27
74 #define gp      $28     /* global pointer */
75 #define sp      $29     /* stack pointer */
76 #define fp      $30     /* frame pointer */
77 #define s8	$30	/* same like fp! */
78 #define ra      $31     /* return address */
79 
80 #endif /* _SYS_REGDEF_H */
81