/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2012 Mark Tinguely
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* $FreeBSD$
*/
#ifndef _MACHINE__VFP_H_
#define _MACHINE__VFP_H_
/* fpsid, fpscr, fpexc are defined in the newer gas */
#define VFPSID cr0
#define VFPSCR cr1
#define VMVFR1 cr6
#define VMVFR0 cr7
#define VFPEXC cr8
#define VFPINST cr9 /* vfp 1 and 2 except instruction */
#define VFPINST2 cr10 /* vfp 2? */
/* VFPSID */
#define VFPSID_IMPLEMENTOR_OFF 24
#define VFPSID_IMPLEMENTOR_MASK (0xff000000)
#define VFPSID_HARDSOFT_IMP (0x00800000)
#define VFPSID_SINGLE_PREC 20 /* version 1 and 2 */
#define VFPSID_SUBVERSION_OFF 16
#define VFPSID_SUBVERSION2_MASK (0x000f0000) /* version 1 and 2 */
#define VFPSID_SUBVERSION3_MASK (0x007f0000) /* version 3 */
#define VFP_ARCH1 0x0
#define VFP_ARCH2 0x1
#define VFP_ARCH3 0x2
#define VFPSID_PARTNUMBER_OFF 8
#define VFPSID_PARTNUMBER_MASK (0x0000ff00)
#define VFPSID_VARIANT_OFF 4
#define VFPSID_VARIANT_MASK (0x000000f0)
#define VFPSID_REVISION_MASK 0x0f
/* VFPSCR */
#define VFPSCR_CC_N (0x80000000) /* comparison less than */
#define VFPSCR_CC_Z (0x40000000) /* comparison equal */
#define VFPSCR_CC_C (0x20000000) /* comparison = > unordered */
#define VFPSCR_CC_V (0x10000000) /* comparison unordered */
#define VFPSCR_QC (0x08000000) /* saturation cululative */
#define VFPSCR_DN (0x02000000) /* default NaN enable */
#define VFPSCR_FZ (0x01000000) /* flush to zero enabled */
#define VFPSCR_RMODE_OFF 22 /* rounding mode offset */
#define VFPSCR_RMODE_MASK (0x00c00000) /* rounding mode mask */
#define VFPSCR_RMODE_RN (0x00000000) /* round nearest */
#define VFPSCR_RMODE_RPI (0x00400000) /* round to plus infinity */
#define VFPSCR_RMODE_RNI (0x00800000) /* round to neg infinity */
#define VFPSCR_RMODE_RM (0x00c00000) /* round to zero */
#define VFPSCR_STRIDE_OFF 20 /* vector stride -1 */
#define VFPSCR_STRIDE_MASK (0x00300000)
#define VFPSCR_LEN_OFF 16 /* vector length -1 */
#define VFPSCR_LEN_MASK (0x00070000)
#define VFPSCR_IDE (0x00008000) /* input subnormal exc enable */
#define VFPSCR_IXE (0x00001000) /* inexact exception enable */
#define VFPSCR_UFE (0x00000800) /* underflow exception enable */
#define VFPSCR_OFE (0x00000400) /* overflow exception enable */
#define VFPSCR_DNZ (0x00000200) /* div by zero exception en */
#define VFPSCR_IOE (0x00000100) /* invalid op exec enable */
#define VFPSCR_IDC (0x00000080) /* input subnormal cumul */
#define VFPSCR_IXC (0x00000010) /* Inexact cumulative flag */
#define VFPSCR_UFC (0x00000008) /* underflow cumulative flag */
#define VFPSCR_OFC (0x00000004) /* overflow cumulative flag */
#define VFPSCR_DZC (0x00000002) /* division by zero flag */
#define VFPSCR_IOC (0x00000001) /* invalid operation cumul */
/* VFPEXC */
#define VFPEXC_EX (0x80000000) /* exception v1 v2 */
#define VFPEXC_EN (0x40000000) /* vfp enable */
#define VFPEXC_DEX (0x20000000) /* Synchronous exception */
#define VFPEXC_FP2V (0x10000000) /* FPINST2 valid */
#define VFPEXC_INV (0x00000080) /* Input exception */
#define VFPEXC_UFC (0x00000008) /* Underflow exception */
#define VFPEXC_OFC (0x00000004) /* Overflow exception */
#define VFPEXC_IOC (0x00000001) /* Invlaid operation */
/* version 3 registers */
/* VMVFR0 */
#define VMVFR0_RM_OFF 28
#define VMVFR0_RM_MASK (0xf0000000) /* VFP rounding modes */
#define VMVFR0_SV_OFF 24
#define VMVFR0_SV_MASK (0x0f000000) /* VFP short vector supp */
#define VMVFR0_SR_OFF 20
#define VMVFR0_SR (0x00f00000) /* VFP hw sqrt supp */
#define VMVFR0_D_OFF 16
#define VMVFR0_D_MASK (0x000f0000) /* VFP divide supp */
#define VMVFR0_TE_OFF 12
#define VMVFR0_TE_MASK (0x0000f000) /* VFP trap exception supp */
#define VMVFR0_DP_OFF 8
#define VMVFR0_DP_MASK (0x00000f00) /* VFP double prec support */
#define VMVFR0_SP_OFF 4
#define VMVFR0_SP_MASK (0x000000f0) /* VFP single prec support */
#define VMVFR0_RB_MASK (0x0000000f) /* VFP 64 bit media support */
/* VMVFR1 */
#define VMVFR1_FMAC_OFF 28
#define VMVFR1_FMAC_MASK (0xf0000000) /* Neon FMAC support */
#define VMVFR1_VFP_HP_OFF 24
#define VMVFR1_VFP_HP_MASK (0x0f000000) /* VFP half prec support */
#define VMVFR1_HP_OFF 20
#define VMVFR1_HP_MASK (0x00f00000) /* Neon half prec support */
#define VMVFR1_SP_OFF 16
#define VMVFR1_SP_MASK (0x000f0000) /* Neon single prec support */
#define VMVFR1_I_OFF 12
#define VMVFR1_I_MASK (0x0000f000) /* Neon integer support */
#define VMVFR1_LS_OFF 8
#define VMVFR1_LS_MASK (0x00000f00) /* Neon ld/st instr support */
#define VMVFR1_DN_OFF 4
#define VMVFR1_DN_MASK (0x000000f0) /* Neon prop NaN support */
#define VMVFR1_FZ_MASK (0x0000000f) /* Neon denormal arith supp */
#define COPROC10 (0x3 << 20)
#define COPROC11 (0x3 << 22)
#ifndef LOCORE
struct vfp_state {
uint64_t reg[32];
uint32_t fpscr;
uint32_t fpexec;
uint32_t fpinst;
uint32_t fpinst2;
};
#ifdef _KERNEL
void get_vfpcontext(struct thread *, mcontext_vfp_t *);
void set_vfpcontext(struct thread *, mcontext_vfp_t *);
void vfp_init(void);
void vfp_store(struct vfp_state *, boolean_t);
void vfp_discard(struct thread *);
#endif /* _KERNEL */
#endif /* LOCORE */
#endif