vfpdf.S revision 1.2.6.2
1 1.2.6.2 yamt /*- 2 1.2.6.2 yamt * Copyright (c) 2013 The NetBSD Foundation, Inc. 3 1.2.6.2 yamt * All rights reserved. 4 1.2.6.2 yamt * 5 1.2.6.2 yamt * This code is derived from software contributed to The NetBSD Foundation 6 1.2.6.2 yamt * by Matt Thomas of 3am Software Foundry. 7 1.2.6.2 yamt * 8 1.2.6.2 yamt * Redistribution and use in source and binary forms, with or without 9 1.2.6.2 yamt * modification, are permitted provided that the following conditions 10 1.2.6.2 yamt * are met: 11 1.2.6.2 yamt * 1. Redistributions of source code must retain the above copyright 12 1.2.6.2 yamt * notice, this list of conditions and the following disclaimer. 13 1.2.6.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 14 1.2.6.2 yamt * notice, this list of conditions and the following disclaimer in the 15 1.2.6.2 yamt * documentation and/or other materials provided with the distribution. 16 1.2.6.2 yamt * 17 1.2.6.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 1.2.6.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 1.2.6.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 1.2.6.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 1.2.6.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 1.2.6.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 1.2.6.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 1.2.6.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 1.2.6.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 1.2.6.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 1.2.6.2 yamt * POSSIBILITY OF SUCH DAMAGE. 28 1.2.6.2 yamt */ 29 1.2.6.2 yamt 30 1.2.6.2 yamt #include <arm/asm.h> 31 1.2.6.2 yamt 32 1.2.6.2 yamt RCSID("$NetBSD: vfpdf.S,v 1.2.6.2 2014/05/22 11:36:55 yamt Exp $") 33 1.2.6.2 yamt 34 1.2.6.2 yamt /* 35 1.2.6.2 yamt * This file provides softfloat compatible routines which use VFP instructions 36 1.2.6.2 yamt * to do the actual work. This should give near hard-float performance while 37 1.2.6.2 yamt * being compatible with soft-float code. 38 1.2.6.2 yamt * 39 1.2.6.2 yamt * This file implements the double precision floating point routines. 40 1.2.6.2 yamt */ 41 1.2.6.2 yamt 42 1.2.6.2 yamt #ifdef __ARMEL__ 43 1.2.6.2 yamt #define vmov_arg0 vmov d0, r0, r1 44 1.2.6.2 yamt #define vmov_arg1 vmov d1, r2, r3 45 1.2.6.2 yamt #define vmov_ret vmov r0, r1, d0 46 1.2.6.2 yamt #else 47 1.2.6.2 yamt #define vmov_arg0 vmov d0, r1, r0 48 1.2.6.2 yamt #define vmov_arg1 vmov d1, r3, r2 49 1.2.6.2 yamt #define vmov_ret vmov r1, r0, d0 50 1.2.6.2 yamt #endif 51 1.2.6.2 yamt #define vmov_args vmov_arg0; vmov_arg1 52 1.2.6.2 yamt 53 1.2.6.2 yamt #ifdef __ARM_EABI__ 54 1.2.6.2 yamt #define __adddf3 __aeabi_dadd 55 1.2.6.2 yamt #define __divdf3 __aeabi_ddiv 56 1.2.6.2 yamt #define __muldf3 __aeabi_dmul 57 1.2.6.2 yamt #define __subdf3 __aeabi_dsub 58 1.2.6.2 yamt #define __negdf2 __aeabi_dneg 59 1.2.6.2 yamt #define __extendsfdf2 __aeabi_f2d 60 1.2.6.2 yamt #define __fixdfsi __aeabi_d2iz 61 1.2.6.2 yamt #define __fixunsdfsi __aeabi_d2uiz 62 1.2.6.2 yamt #define __floatsidf __aeabi_i2d 63 1.2.6.2 yamt #define __floatunsidf __aeabi_ui2d 64 1.2.6.2 yamt #endif 65 1.2.6.2 yamt 66 1.2.6.2 yamt ENTRY(__adddf3) 67 1.2.6.2 yamt vmov_args 68 1.2.6.2 yamt vadd.f64 d0, d0, d1 69 1.2.6.2 yamt vmov_ret 70 1.2.6.2 yamt RET 71 1.2.6.2 yamt END(__adddf3) 72 1.2.6.2 yamt 73 1.2.6.2 yamt ENTRY(__subdf3) 74 1.2.6.2 yamt vmov_args 75 1.2.6.2 yamt vsub.f64 d0, d0, d1 76 1.2.6.2 yamt vmov_ret 77 1.2.6.2 yamt RET 78 1.2.6.2 yamt END(__subdf3) 79 1.2.6.2 yamt 80 1.2.6.2 yamt #ifdef __ARM_EABI__ 81 1.2.6.2 yamt ENTRY(__aeabi_drsub) 82 1.2.6.2 yamt vmov_args 83 1.2.6.2 yamt vsub.f64 d0, d1, d0 84 1.2.6.2 yamt vmov_ret 85 1.2.6.2 yamt RET 86 1.2.6.2 yamt END(__aeabi_drsub) 87 1.2.6.2 yamt #endif 88 1.2.6.2 yamt 89 1.2.6.2 yamt ENTRY(__muldf3) 90 1.2.6.2 yamt vmov_args 91 1.2.6.2 yamt vmul.f64 d0, d0, d1 92 1.2.6.2 yamt vmov_ret 93 1.2.6.2 yamt RET 94 1.2.6.2 yamt END(__muldf3) 95 1.2.6.2 yamt 96 1.2.6.2 yamt ENTRY(__divdf3) 97 1.2.6.2 yamt vmov_args 98 1.2.6.2 yamt vdiv.f64 d0, d0, d1 99 1.2.6.2 yamt vmov_ret 100 1.2.6.2 yamt RET 101 1.2.6.2 yamt END(__divdf3) 102 1.2.6.2 yamt 103 1.2.6.2 yamt ENTRY(__negdf2) 104 1.2.6.2 yamt vmov_arg0 105 1.2.6.2 yamt vneg.f64 d0, d0 106 1.2.6.2 yamt vmov_ret 107 1.2.6.2 yamt RET 108 1.2.6.2 yamt END(__negdf2) 109 1.2.6.2 yamt 110 1.2.6.2 yamt ENTRY(__extendsfdf2) 111 1.2.6.2 yamt vmov s0, r0 112 1.2.6.2 yamt vcvt.f64.f32 d0, s0 113 1.2.6.2 yamt vmov_ret 114 1.2.6.2 yamt RET 115 1.2.6.2 yamt END(__extendsfdf2) 116 1.2.6.2 yamt 117 1.2.6.2 yamt ENTRY(__fixdfsi) 118 1.2.6.2 yamt vmov_arg0 119 1.2.6.2 yamt vcvt.s32.f64 s0, d0 120 1.2.6.2 yamt vmov r0, s0 121 1.2.6.2 yamt RET 122 1.2.6.2 yamt END(__fixdfsi) 123 1.2.6.2 yamt 124 1.2.6.2 yamt ENTRY(__fixunsdfsi) 125 1.2.6.2 yamt vmov_arg0 126 1.2.6.2 yamt vcvt.u32.f64 s0, d0 127 1.2.6.2 yamt vmov r0, s0 128 1.2.6.2 yamt RET 129 1.2.6.2 yamt END(__fixunsdfsi) 130 1.2.6.2 yamt 131 1.2.6.2 yamt ENTRY(__floatsidf) 132 1.2.6.2 yamt vmov s0, r0 133 1.2.6.2 yamt vcvt.f64.s32 d0, s0 134 1.2.6.2 yamt vmov_ret 135 1.2.6.2 yamt RET 136 1.2.6.2 yamt END(__floatsidf) 137 1.2.6.2 yamt 138 1.2.6.2 yamt ENTRY(__floatunsidf) 139 1.2.6.2 yamt vmov s0, r0 140 1.2.6.2 yamt vcvt.f64.u32 d0, s0 141 1.2.6.2 yamt vmov_ret 142 1.2.6.2 yamt RET 143 1.2.6.2 yamt END(__floatunsidf) 144 1.2.6.2 yamt 145 1.2.6.2 yamt /* 146 1.2.6.2 yamt * Effect of a floating point comparision on the condition flags. 147 1.2.6.2 yamt * N Z C V 148 1.2.6.2 yamt * EQ = 0 1 1 0 149 1.2.6.2 yamt * LT = 1 0 0 0 150 1.2.6.2 yamt * GT = 0 0 1 0 151 1.2.6.2 yamt * UN = 0 0 1 1 152 1.2.6.2 yamt */ 153 1.2.6.2 yamt #ifdef __ARM_EABI__ 154 1.2.6.2 yamt ENTRY(__aeabi_cdcmpeq) 155 1.2.6.2 yamt vmov_args 156 1.2.6.2 yamt vcmp.f64 d0, d1 157 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 158 1.2.6.2 yamt RET 159 1.2.6.2 yamt END(__aeabi_cdcmpeq) 160 1.2.6.2 yamt 161 1.2.6.2 yamt ENTRY(__aeabi_cdcmple) 162 1.2.6.2 yamt vmov_args 163 1.2.6.2 yamt vcmpe.f64 d0, d1 164 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 165 1.2.6.2 yamt RET 166 1.2.6.2 yamt END(__aeabi_cdcmple) 167 1.2.6.2 yamt 168 1.2.6.2 yamt ENTRY(__aeabi_cdrcmple) 169 1.2.6.2 yamt vmov_args 170 1.2.6.2 yamt vcmpe.f64 d1, d0 171 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 172 1.2.6.2 yamt RET 173 1.2.6.2 yamt END(__aeabi_cdrcmple) 174 1.2.6.2 yamt 175 1.2.6.2 yamt ENTRY(__aeabi_dcmpeq) 176 1.2.6.2 yamt vmov_args 177 1.2.6.2 yamt vcmp.f64 d0, d1 178 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 179 1.2.6.2 yamt moveq r0, #1 /* (a == b) */ 180 1.2.6.2 yamt movne r0, #0 /* (a != b) or unordered */ 181 1.2.6.2 yamt RET 182 1.2.6.2 yamt END(__aeabi_dcmpeq) 183 1.2.6.2 yamt 184 1.2.6.2 yamt ENTRY(__aeabi_dcmplt) 185 1.2.6.2 yamt vmov_args 186 1.2.6.2 yamt vcmp.f64 d0, d1 187 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 188 1.2.6.2 yamt movlt r0, #1 /* (a < b) */ 189 1.2.6.2 yamt movcs r0, #0 /* (a >= b) or unordered */ 190 1.2.6.2 yamt RET 191 1.2.6.2 yamt END(__aeabi_dcmplt) 192 1.2.6.2 yamt 193 1.2.6.2 yamt ENTRY(__aeabi_dcmple) 194 1.2.6.2 yamt vmov_args 195 1.2.6.2 yamt vcmp.f64 d0, d1 196 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 197 1.2.6.2 yamt movls r0, #1 /* (a <= b) */ 198 1.2.6.2 yamt movhi r0, #0 /* (a > b) or unordered */ 199 1.2.6.2 yamt RET 200 1.2.6.2 yamt END(__aeabi_dcmple) 201 1.2.6.2 yamt 202 1.2.6.2 yamt ENTRY(__aeabi_dcmpge) 203 1.2.6.2 yamt vmov_args 204 1.2.6.2 yamt vcmp.f64 d0, d1 205 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 206 1.2.6.2 yamt movge r0, #1 /* (a >= b) */ 207 1.2.6.2 yamt movlt r0, #0 /* (a < b) or unordered */ 208 1.2.6.2 yamt RET 209 1.2.6.2 yamt END(__aeabi_dcmpge) 210 1.2.6.2 yamt 211 1.2.6.2 yamt ENTRY(__aeabi_dcmpgt) 212 1.2.6.2 yamt vmov_args 213 1.2.6.2 yamt vcmp.f64 d0, d1 214 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 215 1.2.6.2 yamt movgt r0, #1 /* (a > b) */ 216 1.2.6.2 yamt movle r0, #0 /* (a <= b) or unordered */ 217 1.2.6.2 yamt RET 218 1.2.6.2 yamt END(__aeabi_dcmpgt) 219 1.2.6.2 yamt 220 1.2.6.2 yamt ENTRY(__aeabi_dcmpun) 221 1.2.6.2 yamt vmov_args 222 1.2.6.2 yamt vcmp.f64 d0, d1 223 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 224 1.2.6.2 yamt movvs r0, #1 /* (isnan(a) || isnan(b)) */ 225 1.2.6.2 yamt movvc r0, #0 /* !isnan(a) && !isnan(b) */ 226 1.2.6.2 yamt RET 227 1.2.6.2 yamt END(__aeabi_dcmpun) 228 1.2.6.2 yamt 229 1.2.6.2 yamt #else 230 1.2.6.2 yamt /* N set if compare <= result */ 231 1.2.6.2 yamt /* Z set if compare = result */ 232 1.2.6.2 yamt /* C set if compare (=,>=,UNORD) result */ 233 1.2.6.2 yamt /* V set if compare UNORD result */ 234 1.2.6.2 yamt 235 1.2.6.2 yamt STRONG_ALIAS(__eqdf2, __nedf2) 236 1.2.6.2 yamt ENTRY(__nedf2) 237 1.2.6.2 yamt vmov_args 238 1.2.6.2 yamt vcmp.f64 d0, d1 239 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 240 1.2.6.2 yamt moveq r0, #0 /* !(a == b) */ 241 1.2.6.2 yamt movne r0, #1 /* !(a == b) */ 242 1.2.6.2 yamt RET 243 1.2.6.2 yamt END(__nedf2) 244 1.2.6.2 yamt 245 1.2.6.2 yamt STRONG_ALIAS(__gedf2, __ltdf2) 246 1.2.6.2 yamt ENTRY(__ltdf2) 247 1.2.6.2 yamt vmov_args 248 1.2.6.2 yamt vcmp.f64 d0, d1 249 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 250 1.2.6.2 yamt mvnmi r0, #0 /* -(a < b) */ 251 1.2.6.2 yamt movpl r0, #0 /* -(a < b) */ 252 1.2.6.2 yamt RET 253 1.2.6.2 yamt END(__ltdf2) 254 1.2.6.2 yamt 255 1.2.6.2 yamt STRONG_ALIAS(__gtdf2, __ledf2) 256 1.2.6.2 yamt ENTRY(__ledf2) 257 1.2.6.2 yamt vmov_args 258 1.2.6.2 yamt vcmp.f64 d0, d1 259 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 260 1.2.6.2 yamt movgt r0, #1 /* (a > b) */ 261 1.2.6.2 yamt movle r0, #0 /* (a > b) */ 262 1.2.6.2 yamt RET 263 1.2.6.2 yamt END(__ledf2) 264 1.2.6.2 yamt 265 1.2.6.2 yamt ENTRY(__unorddf2) 266 1.2.6.2 yamt vmov_args 267 1.2.6.2 yamt vcmp.f64 d0, d1 268 1.2.6.2 yamt vmrs APSR_nzcv, fpscr 269 1.2.6.2 yamt movvs r0, #1 /* isnan(a) || isnan(b) */ 270 1.2.6.2 yamt movvc r0, #0 /* isnan(a) || isnan(b) */ 271 1.2.6.2 yamt RET 272 1.2.6.2 yamt END(__unorddf2) 273 1.2.6.2 yamt #endif /* !__ARM_EABI__ */ 274
Indexes created Thu Oct 02 14:10:14 GMT 2025