1/*
2 * Definitions for the FPU register names
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License.  See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 1995, 1999 Ralf Baechle
9 * Copyright (C) 1985 MIPS Computer Systems, Inc.
10 * Copyright (C) 1990 - 1992, 1999 Silicon Graphics, Inc.
11 */
12#ifndef _ASM_FPREGDEF_H
13#define _ASM_FPREGDEF_H
14
15#include <asm/sgidefs.h>
16
17/*
18 * starting with binutils 2.24.51.20140729, MIPS binutils warn about mixing
19 * hardfloat and softfloat object files.  The kernel build uses soft-float by
20 * default, so we also need to pass -msoft-float along to GAS if it supports it.
21 * But this in turn causes assembler errors in files which access hardfloat
22 * registers.  We detect if GAS supports "-msoft-float" in the Makefile and
23 * explicitly put ".set hardfloat" where floating point registers are touched.
24 */
25#ifdef GAS_HAS_SET_HARDFLOAT
26#define SET_HARDFLOAT .set hardfloat
27#else
28#define SET_HARDFLOAT
29#endif
30
31#if _MIPS_SIM == _MIPS_SIM_ABI32
32
33/*
34 * These definitions only cover the R3000-ish 16/32 register model.
35 * But we're trying to be R3000 friendly anyway ...
36 */
37#define fv0	$f0	 /* return value */
38#define fv0f	$f1
39#define fv1	$f2
40#define fv1f	$f3
41#define fa0	$f12	 /* argument registers */
42#define fa0f	$f13
43#define fa1	$f14
44#define fa1f	$f15
45#define ft0	$f4	 /* caller saved */
46#define ft0f	$f5
47#define ft1	$f6
48#define ft1f	$f7
49#define ft2	$f8
50#define ft2f	$f9
51#define ft3	$f10
52#define ft3f	$f11
53#define ft4	$f16
54#define ft4f	$f17
55#define ft5	$f18
56#define ft5f	$f19
57#define fs0	$f20	 /* callee saved */
58#define fs0f	$f21
59#define fs1	$f22
60#define fs1f	$f23
61#define fs2	$f24
62#define fs2f	$f25
63#define fs3	$f26
64#define fs3f	$f27
65#define fs4	$f28
66#define fs4f	$f29
67#define fs5	$f30
68#define fs5f	$f31
69
70#define fcr31	$31	 /* FPU status register */
71
72#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
73
74#if _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32
75
76#define fv0	$f0	/* return value */
77#define fv1	$f2
78#define fa0	$f12	/* argument registers */
79#define fa1	$f13
80#define fa2	$f14
81#define fa3	$f15
82#define fa4	$f16
83#define fa5	$f17
84#define fa6	$f18
85#define fa7	$f19
86#define ft0	$f4	/* caller saved */
87#define ft1	$f5
88#define ft2	$f6
89#define ft3	$f7
90#define ft4	$f8
91#define ft5	$f9
92#define ft6	$f10
93#define ft7	$f11
94#define ft8	$f20
95#define ft9	$f21
96#define ft10	$f22
97#define ft11	$f23
98#define ft12	$f1
99#define ft13	$f3
100#define fs0	$f24	/* callee saved */
101#define fs1	$f25
102#define fs2	$f26
103#define fs3	$f27
104#define fs4	$f28
105#define fs5	$f29
106#define fs6	$f30
107#define fs7	$f31
108
109#define fcr31	$31
110
111#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 */
112
113#endif /* _ASM_FPREGDEF_H */
114