2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 Mark Tinguely
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #ifndef _MACHINE__VFP_H_
33 #define _MACHINE__VFP_H_
35 /* fpsid, fpscr, fpexc are defined in the newer gas */
41 #define VFPINST cr9 /* vfp 1 and 2 except instruction */
42 #define VFPINST2 cr10 /* vfp 2? */
45 #define VFPSID_IMPLEMENTOR_OFF 24
46 #define VFPSID_IMPLEMENTOR_MASK (0xff000000)
47 #define VFPSID_HARDSOFT_IMP (0x00800000)
48 #define VFPSID_SINGLE_PREC 20 /* version 1 and 2 */
49 #define VFPSID_SUBVERSION_OFF 16
50 #define VFPSID_SUBVERSION2_MASK (0x000f0000) /* version 1 and 2 */
51 #define VFPSID_SUBVERSION3_MASK (0x007f0000) /* version 3 */
55 #define VFPSID_PARTNUMBER_OFF 8
56 #define VFPSID_PARTNUMBER_MASK (0x0000ff00)
57 #define VFPSID_VARIANT_OFF 4
58 #define VFPSID_VARIANT_MASK (0x000000f0)
59 #define VFPSID_REVISION_MASK 0x0f
62 #define VFPSCR_CC_N (0x80000000) /* comparison less than */
63 #define VFPSCR_CC_Z (0x40000000) /* comparison equal */
64 #define VFPSCR_CC_C (0x20000000) /* comparison = > unordered */
65 #define VFPSCR_CC_V (0x10000000) /* comparison unordered */
66 #define VFPSCR_QC (0x08000000) /* saturation cululative */
67 #define VFPSCR_DN (0x02000000) /* default NaN enable */
68 #define VFPSCR_FZ (0x01000000) /* flush to zero enabled */
70 #define VFPSCR_RMODE_OFF 22 /* rounding mode offset */
71 #define VFPSCR_RMODE_MASK (0x00c00000) /* rounding mode mask */
72 #define VFPSCR_RMODE_RN (0x00000000) /* round nearest */
73 #define VFPSCR_RMODE_RPI (0x00400000) /* round to plus infinity */
74 #define VFPSCR_RMODE_RNI (0x00800000) /* round to neg infinity */
75 #define VFPSCR_RMODE_RM (0x00c00000) /* round to zero */
77 #define VFPSCR_STRIDE_OFF 20 /* vector stride -1 */
78 #define VFPSCR_STRIDE_MASK (0x00300000)
79 #define VFPSCR_LEN_OFF 16 /* vector length -1 */
80 #define VFPSCR_LEN_MASK (0x00070000)
81 #define VFPSCR_IDE (0x00008000) /* input subnormal exc enable */
82 #define VFPSCR_IXE (0x00001000) /* inexact exception enable */
83 #define VFPSCR_UFE (0x00000800) /* underflow exception enable */
84 #define VFPSCR_OFE (0x00000400) /* overflow exception enable */
85 #define VFPSCR_DNZ (0x00000200) /* div by zero exception en */
86 #define VFPSCR_IOE (0x00000100) /* invalid op exec enable */
87 #define VFPSCR_IDC (0x00000080) /* input subnormal cumul */
88 #define VFPSCR_IXC (0x00000010) /* Inexact cumulative flag */
89 #define VFPSCR_UFC (0x00000008) /* underflow cumulative flag */
90 #define VFPSCR_OFC (0x00000004) /* overflow cumulative flag */
91 #define VFPSCR_DZC (0x00000002) /* division by zero flag */
92 #define VFPSCR_IOC (0x00000001) /* invalid operation cumul */
95 #define VFPEXC_EX (0x80000000) /* exception v1 v2 */
96 #define VFPEXC_EN (0x40000000) /* vfp enable */
97 #define VFPEXC_DEX (0x20000000) /* Synchronous exception */
98 #define VFPEXC_FP2V (0x10000000) /* FPINST2 valid */
99 #define VFPEXC_INV (0x00000080) /* Input exception */
100 #define VFPEXC_UFC (0x00000008) /* Underflow exception */
101 #define VFPEXC_OFC (0x00000004) /* Overflow exception */
102 #define VFPEXC_IOC (0x00000001) /* Invlaid operation */
104 /* version 3 registers */
106 #define VMVFR0_RM_OFF 28
107 #define VMVFR0_RM_MASK (0xf0000000) /* VFP rounding modes */
109 #define VMVFR0_SV_OFF 24
110 #define VMVFR0_SV_MASK (0x0f000000) /* VFP short vector supp */
111 #define VMVFR0_SR_OFF 20
112 #define VMVFR0_SR (0x00f00000) /* VFP hw sqrt supp */
113 #define VMVFR0_D_OFF 16
114 #define VMVFR0_D_MASK (0x000f0000) /* VFP divide supp */
115 #define VMVFR0_TE_OFF 12
116 #define VMVFR0_TE_MASK (0x0000f000) /* VFP trap exception supp */
117 #define VMVFR0_DP_OFF 8
118 #define VMVFR0_DP_MASK (0x00000f00) /* VFP double prec support */
119 #define VMVFR0_SP_OFF 4
120 #define VMVFR0_SP_MASK (0x000000f0) /* VFP single prec support */
121 #define VMVFR0_RB_MASK (0x0000000f) /* VFP 64 bit media support */
124 #define VMVFR1_FMAC_OFF 28
125 #define VMVFR1_FMAC_MASK (0xf0000000) /* Neon FMAC support */
126 #define VMVFR1_VFP_HP_OFF 24
127 #define VMVFR1_VFP_HP_MASK (0x0f000000) /* VFP half prec support */
128 #define VMVFR1_HP_OFF 20
129 #define VMVFR1_HP_MASK (0x00f00000) /* Neon half prec support */
130 #define VMVFR1_SP_OFF 16
131 #define VMVFR1_SP_MASK (0x000f0000) /* Neon single prec support */
132 #define VMVFR1_I_OFF 12
133 #define VMVFR1_I_MASK (0x0000f000) /* Neon integer support */
134 #define VMVFR1_LS_OFF 8
135 #define VMVFR1_LS_MASK (0x00000f00) /* Neon ld/st instr support */
136 #define VMVFR1_DN_OFF 4
137 #define VMVFR1_DN_MASK (0x000000f0) /* Neon prop NaN support */
138 #define VMVFR1_FZ_MASK (0x0000000f) /* Neon denormal arith supp */
140 #define COPROC10 (0x3 << 20)
141 #define COPROC11 (0x3 << 22)
153 void get_vfpcontext(struct thread *, mcontext_vfp_t *);
154 void set_vfpcontext(struct thread *, mcontext_vfp_t *);
156 void vfp_store(struct vfp_state *, boolean_t);
157 void vfp_discard(struct thread *);