1 /* 2 * Copyright (c) 2012 Mark Tinguely 3 * 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * $FreeBSD$ 27 */ 28 29 30 #ifndef _MACHINE__VFP_H_ 31 #define _MACHINE__VFP_H_ 32 33 #ifdef _KERNEL 34 /* Only kernel defines exist here */ 35 36 /* fpsid, fpscr, fpexc are defined in the newer gas */ 37 #define VFPSID cr0 38 #define VFPSCR cr1 39 #define VMVFR1 cr6 40 #define VMVFR0 cr7 41 #define VFPEXC cr8 42 #define VFPINST cr9 /* vfp 1 and 2 except instruction */ 43 #define VFPINST2 cr10 /* vfp 2? */ 44 45 /* VFPSID */ 46 #define VFPSID_IMPLEMENTOR_OFF 24 47 #define VFPSID_IMPLEMENTOR_MASK (0xff000000) 48 #define VFPSID_HARDSOFT_IMP (0x00800000) 49 #define VFPSID_SINGLE_PREC 20 /* version 1 and 2 */ 50 #define VFPSID_SUBVERSION_OFF 16 51 #define VFPSID_SUBVERSION2_MASK (0x000f0000) /* version 1 and 2 */ 52 #define VFPSID_SUBVERSION3_MASK (0x007f0000) /* version 3 */ 53 #define VFP_ARCH3 (0x00030000) 54 #define VFPSID_PARTNUMBER_OFF 8 55 #define VFPSID_PARTNUMBER_MASK (0x0000ff00) 56 #define VFPSID_VARIANT_OFF 4 57 #define VFPSID_VARIANT_MASK (0x000000f0) 58 #define VFPSID_REVISION_MASK 0x0f 59 60 /* VFPSCR */ 61 #define VFPSCR_CC_N (0x80000000) /* comparison less than */ 62 #define VFPSCR_CC_Z (0x40000000) /* comparison equal */ 63 #define VFPSCR_CC_C (0x20000000) /* comparison = > unordered */ 64 #define VFPSCR_CC_V (0x10000000) /* comparison unordered */ 65 #define VFPSCR_QC (0x08000000) /* cumulative saturation */ 66 #define VFPSCR_DN (0x02000000) /* default NaN enable */ 67 #define VFPSCR_FZ (0x01000000) /* flush to zero enabled */ 68 69 #define VFPSCR_RMODE_OFF 22 /* rounding mode offset */ 70 #define VFPSCR_RMODE_MASK (0x00c00000) /* rounding mode mask */ 71 #define VFPSCR_RMODE_RN (0x00000000) /* round nearest */ 72 #define VFPSCR_RMODE_RPI (0x00400000) /* round to plus infinity */ 73 #define VFPSCR_RMODE_RNI (0x00800000) /* round to neg infinity */ 74 #define VFPSCR_RMODE_RM (0x00c00000) /* round to zero */ 75 76 #define VFPSCR_STRIDE_OFF 20 /* vector stride -1 */ 77 #define VFPSCR_STRIDE_MASK (0x00300000) 78 #define VFPSCR_LEN_OFF 16 /* vector length -1 */ 79 #define VFPSCR_LEN_MASK (0x00070000) 80 #define VFPSCR_IDE (0x00008000) /* input subnormal exc enable */ 81 #define VFPSCR_IXE (0x00001000) /* inexact exception enable */ 82 #define VFPSCR_UFE (0x00000800) /* underflow exception enable */ 83 #define VFPSCR_OFE (0x00000400) /* overflow exception enable */ 84 #define VFPSCR_DNZ (0x00000200) /* div by zero exception en */ 85 #define VFPSCR_IOE (0x00000100) /* invalid op exec enable */ 86 #define VFPSCR_IDC (0x00000080) /* input subnormal cumul */ 87 #define VFPSCR_IXC (0x00000010) /* Inexact cumulative flag */ 88 #define VFPSCR_UFC (0x00000008) /* underflow cumulative flag */ 89 #define VFPSCR_OFC (0x00000004) /* overflow cumulative flag */ 90 #define VFPSCR_DZC (0x00000002) /* division by zero flag */ 91 #define VFPSCR_IOC (0x00000001) /* invalid operation cumul */ 92 93 /* VFPEXC */ 94 #define VFPEXC_EX (0x80000000) /* exception v1 v2 */ 95 #define VFPEXC_EN (0x40000000) /* vfp enable */ 96 97 /* version 3 registers */ 98 /* VMVFR0 */ 99 #define VMVFR0_RM_OFF 28 100 #define VMVFR0_RM_MASK (0xf0000000) /* VFP rounding modes */ 101 102 #define VMVFR0_SV_OFF 24 103 #define VMVFR0_SV_MASK (0x0f000000) /* VFP short vector supp */ 104 #define VMVFR0_SR_OFF 20 105 #define VMVFR0_SR (0x00f00000) /* VFP hw sqrt supp */ 106 #define VMVFR0_D_OFF 16 107 #define VMVFR0_D_MASK (0x000f0000) /* VFP divide supp */ 108 #define VMVFR0_TE_OFF 12 109 #define VMVFR0_TE_MASK (0x0000f000) /* VFP trap exception supp */ 110 #define VMVFR0_DP_OFF 8 111 #define VMVFR0_DP_MASK (0x00000f00) /* VFP double prec support */ 112 #define VMVFR0_SP_OFF 4 113 #define VMVFR0_SP_MASK (0x000000f0) /* VFP single prec support */ 114 #define VMVFR0_RB_MASK (0x0000000f) /* VFP 64 bit media support */ 115 116 /* VMVFR1 */ 117 #define VMVFR1_SP_OFF 16 118 #define VMVFR1_SP_MASK (0x000f0000) /* Neon single prec support */ 119 #define VMVFR1_I_OFF 12 120 #define VMVFR1_I_MASK (0x0000f000) /* Neon integer support */ 121 #define VMVFR1_LS_OFF 8 122 #define VMVFR1_LS_MASK (0x00000f00) /* Neon ld/st instr support */ 123 #define VMVFR1_DN_OFF 4 124 #define VMVFR1_DN_MASK (0x000000f0) /* Neon prop NaN support */ 125 #define VMVFR1_FZ_MASK (0x0000000f) /* Neon denormal arith supp */ 126 127 #define COPROC10 (0x3 << 20) 128 #define COPROC11 (0x3 << 22) 129 130 void vfp_init(void); 131 void vfp_discard(struct proc *); 132 uint32_t vfp_save(void); 133 void vfp_enable(void); 134 135 #endif /* _KERNEL */ 136 #endif /* _MACHINE__VFP_H_ */ 137