1/*- 2 * Copyright (c) 2002 Jake Burkholder. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: releng/10.3/lib/libc/sparc64/fpu/fpu_qp.c 178138 2008-04-12 03:09:51Z das $"); 29 30#include <sys/types.h> 31#include <machine/fsr.h> 32 33#include "fpu_emu.h" 34#include "fpu_extern.h" 35 36#define _QP_OP(op) \ 37void _Qp_ ## op(u_int *c, u_int *a, u_int *b); \ 38void \ 39_Qp_ ## op(u_int *c, u_int *a, u_int *b) \ 40{ \ 41 struct fpemu fe; \ 42 struct fpn *r; \ 43 __asm __volatile("stx %%fsr, %0" : "=m" (fe.fe_fsr) :); \ 44 fe.fe_cx = 0; \ 45 fe.fe_f1.fp_sign = a[0] >> 31; \ 46 fe.fe_f1.fp_sticky = 0; \ 47 fe.fe_f1.fp_class = __fpu_qtof(&fe.fe_f1, a[0], a[1], a[2], a[3]); \ 48 fe.fe_f2.fp_sign = b[0] >> 31; \ 49 fe.fe_f2.fp_sticky = 0; \ 50 fe.fe_f2.fp_class = __fpu_qtof(&fe.fe_f2, b[0], b[1], b[2], b[3]); \ 51 r = __fpu_ ## op(&fe); \ 52 c[0] = __fpu_ftoq(&fe, r, c); \ 53 fe.fe_fsr |= fe.fe_cx << FSR_AEXC_SHIFT; \ 54 __asm __volatile("ldx %0, %%fsr" : : "m" (fe.fe_fsr)); \ 55} 56 57#define _QP_TTOQ(qname, fname, ntype, signpos, atype, ...) \ 58void _Qp_ ## qname ## toq(u_int *c, ntype n); \ 59void \ 60_Qp_ ## qname ## toq(u_int *c, ntype n) \ 61{ \ 62 struct fpemu fe; \ 63 union { atype a[2]; ntype n; } u = { .n = n }; \ 64 __asm __volatile("stx %%fsr, %0" : "=m" (fe.fe_fsr) :); \ 65 fe.fe_cx = 0; \ 66 fe.fe_f1.fp_sign = (signpos >= 0) ? u.a[0] >> signpos : 0; \ 67 fe.fe_f1.fp_sticky = 0; \ 68 fe.fe_f1.fp_class = __fpu_ ## fname ## tof(&fe.fe_f1, __VA_ARGS__); \ 69 c[0] = __fpu_ftoq(&fe, &fe.fe_f1, c); \ 70 fe.fe_fsr |= fe.fe_cx << FSR_AEXC_SHIFT; \ 71 __asm __volatile("ldx %0, %%fsr" : : "m" (fe.fe_fsr)); \ 72} 73 74#define _QP_QTOT(qname, fname, type, ...) \ 75type _Qp_qto ## qname(u_int *c); \ 76type \ 77_Qp_qto ## qname(u_int *c) \ 78{ \ 79 struct fpemu fe; \ 80 union { u_int a; type n; } u; \ 81 __asm __volatile("stx %%fsr, %0" : "=m" (fe.fe_fsr) :); \ 82 fe.fe_cx = 0; \ 83 fe.fe_f1.fp_sign = c[0] >> 31; \ 84 fe.fe_f1.fp_sticky = 0; \ 85 fe.fe_f1.fp_class = __fpu_qtof(&fe.fe_f1, c[0], c[1], c[2], c[3]); \ 86 u.a = __fpu_fto ## fname(&fe, &fe.fe_f1, ## __VA_ARGS__); \ 87 fe.fe_fsr |= fe.fe_cx << FSR_AEXC_SHIFT; \ 88 __asm __volatile("ldx %0, %%fsr" : : "m" (fe.fe_fsr)); \ 89 return (u.n); \ 90} 91 92#define FCC_EQ(fcc) ((fcc) == FSR_CC_EQ) 93#define FCC_GE(fcc) ((fcc) == FSR_CC_EQ || (fcc) == FSR_CC_GT) 94#define FCC_GT(fcc) ((fcc) == FSR_CC_GT) 95#define FCC_LE(fcc) ((fcc) == FSR_CC_EQ || (fcc) == FSR_CC_LT) 96#define FCC_LT(fcc) ((fcc) == FSR_CC_LT) 97#define FCC_NE(fcc) ((fcc) != FSR_CC_EQ) 98#define FCC_ID(fcc) (fcc) 99 100#define _QP_CMP(name, cmpe, test) \ 101int _Qp_ ## name(u_int *a, u_int *b) ; \ 102int \ 103_Qp_ ## name(u_int *a, u_int *b) \ 104{ \ 105 struct fpemu fe; \ 106 __asm __volatile("stx %%fsr, %0" : "=m" (fe.fe_fsr) :); \ 107 fe.fe_cx = 0; \ 108 fe.fe_f1.fp_sign = a[0] >> 31; \ 109 fe.fe_f1.fp_sticky = 0; \ 110 fe.fe_f1.fp_class = __fpu_qtof(&fe.fe_f1, a[0], a[1], a[2], a[3]); \ 111 fe.fe_f2.fp_sign = b[0] >> 31; \ 112 fe.fe_f2.fp_sticky = 0; \ 113 fe.fe_f2.fp_class = __fpu_qtof(&fe.fe_f2, b[0], b[1], b[2], b[3]); \ 114 __fpu_compare(&fe, cmpe, 0); \ 115 fe.fe_fsr |= fe.fe_cx << FSR_AEXC_SHIFT; \ 116 __asm __volatile("ldx %0, %%fsr" : : "m" (fe.fe_fsr)); \ 117 return (test(FSR_GET_FCC0(fe.fe_fsr))); \ 118} 119 120void _Qp_sqrt(u_int *c, u_int *a); 121void 122_Qp_sqrt(u_int *c, u_int *a) 123{ 124 struct fpemu fe; 125 struct fpn *r; 126 __asm __volatile("stx %%fsr, %0" : "=m" (fe.fe_fsr) :); 127 fe.fe_cx = 0; 128 fe.fe_f1.fp_sign = a[0] >> 31; 129 fe.fe_f1.fp_sticky = 0; 130 fe.fe_f1.fp_class = __fpu_qtof(&fe.fe_f1, a[0], a[1], a[2], a[3]); 131 r = __fpu_sqrt(&fe); 132 c[0] = __fpu_ftoq(&fe, r, c); 133 fe.fe_fsr |= fe.fe_cx << FSR_AEXC_SHIFT; 134 __asm __volatile("ldx %0, %%fsr" : : "m" (fe.fe_fsr)); 135} 136 137_QP_OP(add) 138_QP_OP(div) 139_QP_OP(mul) 140_QP_OP(sub) 141 142_QP_TTOQ(d, d, double, 31, u_int, u.a[0], u.a[1]) 143_QP_TTOQ(i, i, int, 31, u_int, u.a[0]) 144_QP_TTOQ(s, s, float, 31, u_int, u.a[0]) 145_QP_TTOQ(x, x, long, 63, u_long, u.a[0]) 146_QP_TTOQ(ui, i, u_int, -1, u_int, u.a[0]) 147_QP_TTOQ(ux, x, u_long, -1, u_long, u.a[0]) 148 149_QP_QTOT(d, d, double, &u.a) 150_QP_QTOT(i, i, int) 151_QP_QTOT(s, s, float) 152_QP_QTOT(x, x, long, &u.a) 153_QP_QTOT(ui, i, u_int) 154_QP_QTOT(ux, x, u_long, &u.a) 155 156_QP_CMP(feq, 0, FCC_EQ) 157_QP_CMP(fge, 1, FCC_GE) 158_QP_CMP(fgt, 1, FCC_GT) 159_QP_CMP(fle, 1, FCC_LE) 160_QP_CMP(flt, 1, FCC_LT) 161_QP_CMP(fne, 0, FCC_NE) 162_QP_CMP(cmp, 0, FCC_ID) 163_QP_CMP(cmpe, 1, FCC_ID) 164