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annotate src/cpu.c @ 24:e49e70f7012f

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impl/x86: add static assertions for alignment and size
author Paper <paper@tflc.us>
date Sun, 24 Nov 2024 03:32:53 -0500
parents e26874655738
children 92156fe32755
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23
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1 /**
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2 * vec - a tiny SIMD vector library in C99
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3 *
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4 * Copyright (c) 2024 Paper
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5 *
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6 * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 * of this software and associated documentation files (the "Software"), to deal
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8 * in the Software without restriction, including without limitation the rights
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9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 * copies of the Software, and to permit persons to whom the Software is
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11 * furnished to do so, subject to the following conditions:
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12 *
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13 * The above copyright notice and this permission notice shall be included in all
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14 * copies or substantial portions of the Software.
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15 *
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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22 * SOFTWARE.
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23 **/
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24
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25 /* Detect CPU SIMD support. Much of this code was stolen from SDL.
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26 *
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27 * Simple DirectMedia Layer
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28 * Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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29 *
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30 * This software is provided 'as-is', without any express or implied
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31 * warranty. In no event will the authors be held liable for any damages
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32 * arising from the use of this software.
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33 *
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34 * Permission is granted to anyone to use this software for any purpose,
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35 * including commercial applications, and to alter it and redistribute it
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36 * freely, subject to the following restrictions:
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37 *
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38 * 1. The origin of this software must not be misrepresented; you must not
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39 * claim that you wrote the original software. If you use this software
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40 * in a product, an acknowledgment in the product documentation would be
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41 * appreciated but is not required.
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42 * 2. Altered source versions must be plainly marked as such, and must not be
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43 * misrepresented as being the original software.
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44 * 3. This notice may not be removed or altered from any source distribution.
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45 */
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46
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47 #include "vec/cpu.h"
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48
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49 #if defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))
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50 # include <sys/sysctl.h> // For AltiVec check
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51 #elif defined(__OpenBSD__) && defined(__powerpc__)
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52 # include <sys/types.h>
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53 # include <sys/sysctl.h> // For AltiVec check
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54 # include <machine/cpu.h>
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55 #elif defined(__FreeBSD__) && defined(__powerpc__)
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56 # include <machine/cpu.h>
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57 # include <sys/auxv.h>
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58 #elif defined(__ALTIVEC__)
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59 # include <signal.h>
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60 # include <setjmp.h>
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61 #endif
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62
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63 #ifdef __FreeBSD__
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64 # include <sys/param.h>
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65 #endif
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66
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67 #if (defined(__linux__) || defined(__ANDROID__)) && defined(__arm__)
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68 # include <unistd.h>
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69 # include <sys/types.h>
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70 # include <sys/stat.h>
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71 # include <fcntl.h>
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72 # include <elf.h>
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73
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74 /*#include <asm/hwcap.h>*/
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75 # ifndef AT_HWCAP
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76 # define AT_HWCAP 16
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77 # endif
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78 # ifndef AT_PLATFORM
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79 # define AT_PLATFORM 15
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80 # endif
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81 # ifndef HWCAP_NEON
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82 # define HWCAP_NEON (1 << 12)
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83 # endif
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84 #endif
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85
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86 static inline int vec_CPU_have_CPUID(void)
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87 {
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88 int has_CPUID = 0;
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89
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90 #if (defined(__GNUC__) || defined(__llvm__)) && defined(__i386__)
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91 __asm__ (
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92 " pushfl # Get original EFLAGS \n"
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93 " popl %%eax \n"
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94 " movl %%eax,%%ecx \n"
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95 " xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n"
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96 " pushl %%eax # Save new EFLAGS value on stack \n"
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97 " popfl # Replace current EFLAGS value \n"
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98 " pushfl # Get new EFLAGS \n"
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99 " popl %%eax # Store new EFLAGS in EAX \n"
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100 " xorl %%ecx,%%eax # Can not toggle ID bit, \n"
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101 " jz 1f # Processor=80486 \n"
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102 " movl $1,%0 # We have CPUID support \n"
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103 "1: \n"
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104 : "=m" (has_CPUID)
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105 :
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106 : "%eax", "%ecx"
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107 );
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108 #elif (defined(__GNUC__) || defined(__llvm__)) && defined(__x86_64__)
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109 /* Technically, if this is being compiled under __x86_64__ then it has
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110 CPUid by definition. But it's nice to be able to prove it. :) */
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111 __asm__ (
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112 " pushfq # Get original EFLAGS \n"
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113 " popq %%rax \n"
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114 " movq %%rax,%%rcx \n"
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115 " xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n"
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116 " pushq %%rax # Save new EFLAGS value on stack \n"
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117 " popfq # Replace current EFLAGS value \n"
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118 " pushfq # Get new EFLAGS \n"
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119 " popq %%rax # Store new EFLAGS in EAX \n"
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120 " xorl %%ecx,%%eax # Can not toggle ID bit, \n"
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121 " jz 1f # Processor=80486 \n"
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122 " movl $1,%0 # We have CPUID support \n"
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123 "1: \n"
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124 : "=m" (has_CPUID)
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125 :
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126 : "%rax", "%rcx"
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127 );
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128 #elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
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129 __asm {
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130 pushfd ; Get original EFLAGS
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131 pop eax
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132 mov ecx, eax
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133 xor eax, 200000h ; Flip ID bit in EFLAGS
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134 push eax ; Save new EFLAGS value on stack
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135 popfd ; Replace current EFLAGS value
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136 pushfd ; Get new EFLAGS
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137 pop eax ; Store new EFLAGS in EAX
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138 xor eax, ecx ; Can not toggle ID bit,
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139 jz done ; Processor=80486
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140 mov has_CPUID,1 ; We have CPUID support
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141 done:
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142 }
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143 #elif defined(_MSC_VER) && defined(_M_X64)
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144 has_CPUID = 1;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
145 #elif defined(__sun) && defined(__i386)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
146 __asm (
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
147 " pushfl \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
148 " popl %eax \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
149 " movl %eax,%ecx \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
150 " xorl $0x200000,%eax \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
151 " pushl %eax \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
152 " popfl \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
153 " pushfl \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
154 " popl %eax \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
155 " xorl %ecx,%eax \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
156 " jz 1f \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
157 " movl $1,-8(%ebp) \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
158 "1: \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
159 );
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
160 #elif defined(__sun) && defined(__amd64)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
161 __asm (
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
162 " pushfq \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
163 " popq %rax \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
164 " movq %rax,%rcx \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
165 " xorl $0x200000,%eax \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
166 " pushq %rax \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
167 " popfq \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
168 " pushfq \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
169 " popq %rax \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
170 " xorl %ecx,%eax \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
171 " jz 1f \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
172 " movl $1,-8(%rbp) \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
173 "1: \n"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
174 );
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
175 #endif
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
176
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
177 return has_CPUID;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
178 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
179
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
180 #if (defined(__GNUC__) || defined(__llvm__)) && defined(__i386__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
181 # define VEC_CPU_CPUID(func, a, b, c, d) \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
182 __asm__ __volatile__( \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
183 " pushl %%ebx \n" \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
184 " xorl %%ecx,%%ecx \n" \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
185 " cpuid \n" \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
186 " movl %%ebx, %%esi \n" \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
187 " popl %%ebx \n" \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
188 : "=a"(a), "=S"(b), "=c"(c), "=d"(d) \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
189 : "a"(func))
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
190 #elif (defined(__GNUC__) || defined(__llvm__)) && defined(__x86_64__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
191 # define VEC_CPU_CPUID(func, a, b, c, d) \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
192 __asm__ __volatile__( \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
193 " pushq %%rbx \n" \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
194 " xorq %%rcx,%%rcx \n" \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
195 " cpuid \n" \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
196 " movq %%rbx, %%rsi \n" \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
197 " popq %%rbx \n" \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
198 : "=a"(a), "=S"(b), "=c"(c), "=d"(d) \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
199 : "a"(func))
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
200 #elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
201 # define VEC_CPU_CPUID(func, a, b, c, d) \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
202 __asm { \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
203 __asm mov eax, func \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
204 __asm xor ecx, ecx \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
205 __asm cpuid \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
206 __asm mov a, eax \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
207 __asm mov b, ebx \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
208 __asm mov c, ecx \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
209 __asm mov d, edx \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
210 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
211 #elif (defined(_MSC_VER) && defined(_M_X64))
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
212 // Use __cpuidex instead of __cpuid because ICL does not clear ecx register
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
213 # define VEC_CPU_CPUID(func, a, b, c, d) \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
214 do { \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
215 int CPUInfo[4]; \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
216 __cpuidex(CPUInfo, func, 0); \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
217 a = CPUInfo[0]; \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
218 b = CPUInfo[1]; \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
219 c = CPUInfo[2]; \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
220 d = CPUInfo[3]; \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
221 } while (0)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
222 #else
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
223 # define VEC_CPU_CPUID(func, a, b, c, d) \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
224 do { \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
225 a = b = c = d = 0; \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
226 (void)a; \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
227 (void)b; \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
228 (void)c; \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
229 (void)d; \
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
230 } while (0)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
231 #endif
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
232
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
233 // ---------------------------------------------------------------
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
234
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
235 static int vec_CPU_CPUIDFeatures[4];
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
236 static int vec_CPU_CPUIDMaxFunction = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
237 static int vec_CPU_OSSavesYMM = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
238 static int vec_CPU_OSSavesZMM = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
239
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
240 static inline void vec_CPU_get_CPUID_features(void)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
241 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
242 static int checked = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
243 if (!checked) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
244 checked = 1;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
245 if (vec_CPU_have_CPUID()) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
246 int a, b, c, d;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
247 VEC_CPU_CPUID(0, a, b, c, d);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
248 vec_CPU_CPUIDMaxFunction = a;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
249 if (vec_CPU_CPUIDMaxFunction >= 1) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
250 VEC_CPU_CPUID(1, a, b, c, d);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
251 vec_CPU_CPUIDFeatures[0] = a;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
252 vec_CPU_CPUIDFeatures[1] = b;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
253 vec_CPU_CPUIDFeatures[2] = c;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
254 vec_CPU_CPUIDFeatures[3] = d;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
255
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
256 // Check to make sure we can call xgetbv
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
257 if (c & 0x08000000) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
258 // Call xgetbv to see if YMM (etc) register state is saved
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
259 #if (defined(__GNUC__) || defined(__llvm__)) && (defined(__i386__) || defined(__x86_64__))
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
260 __asm__(".byte 0x0f, 0x01, 0xd0"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
261 : "=a"(a)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
262 : "c"(0)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
263 : "%edx");
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
264 #elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64)) && (_MSC_FULL_VER >= 160040219) // VS2010 SP1
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
265 a = (int)_xgetbv(0);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
266 #elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
267 __asm {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
268 xor ecx, ecx
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
269 _asm _emit 0x0f _asm _emit 0x01 _asm _emit 0xd0
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
270 mov a, eax
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
271 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
272 #endif
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
273 vec_CPU_OSSavesYMM = ((a & 6) == 6) ? 1 : 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
274 vec_CPU_OSSavesZMM = (vec_CPU_OSSavesYMM && ((a & 0xe0) == 0xe0)) ? 1 : 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
275 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
276 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
277 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
278 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
279 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
280
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
281 #if !((defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))) || (defined(__OpenBSD__) && defined(__powerpc__))) && defined(VEC_COMPILER_HAS_ALTIVEC) && defined(__GNUC__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
282 static jmp_buf vec_jmpbuf;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
283 static void vec_CPU_illegal_instruction(int sig)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
284 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
285 longjmp(vec_jmpbuf, 1);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
286 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
287 #endif
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
288
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
289 static int vec_CPU_have_ALTIVEC(void)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
290 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
291 volatile int altivec = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
292 #if (defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))) || (defined(__OpenBSD__) && defined(__powerpc__))
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
293 int selectors[2] = {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
294 # ifdef __OpenBSD__
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
295 CTL_MACHDEP, CPU_ALTIVEC
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
296 # else
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
297 CTL_HW, HW_VECTORUNIT
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
298 # endif
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
299 };
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
300 int hasVectorUnit = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
301 vec_uintsize length = sizeof(hasVectorUnit);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
302 int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
303 if (!error)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
304 altivec = (hasVectorUnit != 0);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
305 #elif defined(__FreeBSD__) && defined(__powerpc__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
306 unsigned long cpufeatures = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
307 elf_aux_info(AT_HWCAP, &cpufeatures, sizeof(cpufeatures));
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
308 altivec = cpufeatures & PPC_FEATURE_HAS_ALTIVEC;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
309 #elif defined(VEC_COMPILER_HAS_ALTIVEC) && defined(__GNUC__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
310 void (*handler)(int sig);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
311 handler = signal(SIGILL, vec_CPU_illegal_instruction);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
312 if (!setjmp(vec_jmpbuf)) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
313 vector unsigned char vec;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
314 vec_and(vec, vec);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
315 altivec = 1;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
316 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
317 signal(SIGILL, handler);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
318 #endif
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
319 return altivec;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
320 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
321
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
322 static int vec_CPU_have_ALTIVEC_VSX(void)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
323 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
324 volatile int vsx = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
325 #if defined(VEC_COMPILER_HAS_ALTIVEC_VSX) && defined(__GNUC__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
326 # warning Compiling UNTESTED code for VSX.
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
327 void (*handler)(int sig);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
328 handler = signal(SIGILL, vec_CPU_illegal_instruction);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
329 if (!setjmp(vec_jmpbuf)) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
330 // this is completely untested
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
331 //__asm__ __volatile__("mtspr 256, %0\n\t"
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
332 // "xxland %%v0, %%v0, %%v0" ::"r"(-1));
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
333 //vsx = 1;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
334 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
335 signal(SIGILL, handler);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
336 #endif
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
337 return vsx;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
338 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
339
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
340 #define vec_CPU_have_MMX() (vec_CPU_CPUIDFeatures[3] & 0x00800000)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
341 #define vec_CPU_have_SSE() (vec_CPU_CPUIDFeatures[3] & 0x02000000)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
342 #define vec_CPU_have_SSE2() (vec_CPU_CPUIDFeatures[3] & 0x04000000)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
343 #define vec_CPU_have_SSE3() (vec_CPU_CPUIDFeatures[2] & 0x00000001)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
344 #define vec_CPU_have_SSE41() (vec_CPU_CPUIDFeatures[2] & 0x00080000)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
345 #define vec_CPU_have_SSE42() (vec_CPU_CPUIDFeatures[2] & 0x00100000)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
346 #define vec_CPU_have_AVX() (vec_CPU_OSSavesYMM && (vec_CPU_CPUIDFeatures[2] & 0x10000000))
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
347
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
348 static inline int vec_CPU_have_AVX2(void)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
349 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
350 if (vec_CPU_OSSavesYMM && (vec_CPU_CPUIDMaxFunction >= 7)) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
351 int a, b, c, d;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
352 VEC_CPU_CPUID(7, a, b, c, d);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
353 return b & 0x00000020;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
354 (void)a, (void)c, (void)d;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
355 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
356 return 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
357 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
358
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
359 static inline int vec_CPU_have_AVX512F(void)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
360 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
361 if (vec_CPU_OSSavesYMM && (vec_CPU_CPUIDMaxFunction >= 7)) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
362 int a, b, c, d;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
363 VEC_CPU_CPUID(7, a, b, c, d);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
364 return b & 0x00000020;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
365 (void)a, (void)c, (void)d;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
366 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
367 return 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
368 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
369
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
370 #if defined(__linux__) && defined(__arm__) && !defined(HAVE_GETAUXVAL)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
371 static int readProcAuxvForNeon(void)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
372 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
373 int neon = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
374 int fd;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
375
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
376 fd = open("/proc/self/auxv", O_RDONLY | O_CLOEXEC);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
377 if (fd >= 0) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
378 Elf32_auxv_t aux;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
379 while (read(fd, &aux, sizeof(aux)) == sizeof(aux)) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
380 if (aux.a_type == AT_HWCAP) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
381 neon = (aux.a_un.a_val & HWCAP_NEON) == HWCAP_NEON;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
382 break;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
383 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
384 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
385 close(fd);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
386 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
387 return neon;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
388 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
389 #endif
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
390
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
391 static int vec_CPU_have_NEON(void)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
392 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
393 /* The way you detect NEON is a privileged instruction on ARM, so you have
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
394 query the OS kernel in a platform-specific way. :/ */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
395 #if defined(SDL_CPUINFO_DISABLED)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
396 return 0; /* disabled */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
397 #elif (defined(__WINDOWS__) || defined(__WINRT__) || defined(__GDK__)) && (defined(_M_ARM) || defined(_M_ARM64))
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
398 /* Visual Studio, for ARM, doesn't define __ARM_ARCH. Handle this first. */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
399 /* Seems to have been removed */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
400 #ifndef PF_ARM_NEON_INSTRUCTIONS_AVAILABLE
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
401 #define PF_ARM_NEON_INSTRUCTIONS_AVAILABLE 19
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
402 #endif
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
403 /* All WinRT ARM devices are required to support NEON, but just in case. */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
404 return IsProcessorFeaturePresent(PF_ARM_NEON_INSTRUCTIONS_AVAILABLE) != 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
405 #elif (defined(__ARM_ARCH) && (__ARM_ARCH >= 8)) || defined(__aarch64__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
406 return 1; /* ARMv8 always has non-optional NEON support. */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
407 #elif defined(__VITA__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
408 return 1;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
409 #elif defined(__3DS__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
410 return 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
411 #elif defined(__APPLE__) && defined(__ARM_ARCH) && (__ARM_ARCH >= 7)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
412 /* (note that sysctlbyname("hw.optional.neon") doesn't work!) */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
413 return 1; /* all Apple ARMv7 chips and later have NEON. */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
414 #elif defined(__APPLE__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
415 return 0; /* assume anything else from Apple doesn't have NEON. */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
416 #elif !defined(__arm__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
417 return 0; /* not an ARM CPU at all. */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
418 #elif defined(__OpenBSD__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
419 return 1; /* OpenBSD only supports ARMv7 CPUs that have NEON. */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
420 #elif defined(HAVE_ELF_AUX_INFO)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
421 unsigned long hasneon = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
422 if (elf_aux_info(AT_HWCAP, (void *)&hasneon, (int)sizeof(hasneon)) != 0)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
423 return 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
424
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
425 return ((hasneon & HWCAP_NEON) == HWCAP_NEON);
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
426 #elif defined(__QNXNTO__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
427 return SYSPAGE_ENTRY(cpuinfo)->flags & ARM_CPU_FLAG_NEON;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
428 #elif (defined(__linux__) || defined(__ANDROID__)) && defined(HAVE_GETAUXVAL)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
429 return (getauxval(AT_HWCAP) & HWCAP_NEON) == HWCAP_NEON;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
430 #elif defined(__linux__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
431 return readProcAuxvForNeon();
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
432 #elif defined(__ANDROID__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
433 /* Use NDK cpufeatures to read either /proc/self/auxv or /proc/cpuinfo */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
434 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
435 AndroidCpuFamily cpu_family = android_getCpuFamily();
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
436 if (cpu_family == ANDROID_CPU_FAMILY_ARM) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
437 uint64_t cpu_features = android_getCpuFeatures();
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
438 if (cpu_features & ANDROID_CPU_ARM_FEATURE_NEON) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
439 return 1;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
440 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
441 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
442 return 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
443 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
444 #elif defined(__RISCOS__)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
445 /* Use the VFPSupport_Features SWI to access the MVFR registers */
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
446 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
447 _kernel_swi_regs regs;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
448 regs.r[0] = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
449 if (_kernel_swi(VFPSupport_Features, &regs, &regs) == NULL) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
450 if ((regs.r[2] & 0xFFF000) == 0x111000) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
451 return 1;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
452 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
453 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
454 return 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
455 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
456 #else
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
457 #warning vec_CPU_have_NEON is not implemented for this ARM platform. Write me.
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
458 return 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
459 #endif
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
460 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
461
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
462 #define VEC_CPU_FEATURES_RESET VEC_UINT32_C(0xFFFFFFFF)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
463
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
464 static vec_uint32 vec_CPU_features = VEC_CPU_FEATURES_RESET;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
465
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
466 vec_uint32 vec_get_CPU_features(void)
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
467 {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
468 if (vec_CPU_features == VEC_CPU_FEATURES_RESET) {
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
469 vec_CPU_get_CPUID_features();
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
470 vec_CPU_features = 0;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
471 if (vec_CPU_have_ALTIVEC())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
472 vec_CPU_features |= VEC_CPU_HAS_ALTIVEC;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
473 if (vec_CPU_have_ALTIVEC_VSX())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
474 vec_CPU_features |= VEC_CPU_HAS_ALTIVEC_VSX;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
475 if (vec_CPU_have_MMX())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
476 vec_CPU_features |= VEC_CPU_HAS_MMX;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
477 if (vec_CPU_have_SSE())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
478 vec_CPU_features |= VEC_CPU_HAS_SSE;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
479 if (vec_CPU_have_SSE2())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
480 vec_CPU_features |= VEC_CPU_HAS_SSE2;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
481 if (vec_CPU_have_SSE3())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
482 vec_CPU_features |= VEC_CPU_HAS_SSE3;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
483 if (vec_CPU_have_SSE41())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
484 vec_CPU_features |= VEC_CPU_HAS_SSE41;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
485 if (vec_CPU_have_SSE42())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
486 vec_CPU_features |= VEC_CPU_HAS_SSE42;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
487 if (vec_CPU_have_AVX())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
488 vec_CPU_features |= VEC_CPU_HAS_AVX;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
489 if (vec_CPU_have_AVX2())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
490 vec_CPU_features |= VEC_CPU_HAS_AVX2;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
491 if (vec_CPU_have_AVX512F())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
492 vec_CPU_features |= VEC_CPU_HAS_AVX512F;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
493 if (vec_CPU_have_NEON())
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
494 vec_CPU_features |= VEC_CPU_HAS_NEON;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
495 }
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
496 return vec_CPU_features;
e26874655738 *: huge refactor, new major release (hahaha)
Paper <paper@tflc.us>
parents:
diff changeset
497 }