1 /*
2 +----------------------------------------------------------------------+
3 | Zend Engine |
4 +----------------------------------------------------------------------+
5 | Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 2.00 of the Zend license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.zend.com/license/2_00.txt. |
11 | If you did not receive a copy of the Zend license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@zend.com so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Xinchen Hui <laruence@php.net> |
16 +----------------------------------------------------------------------+
17 */
18
19 #ifndef ZEND_CPU_INFO_H
20 #define ZEND_CPU_INFO_H
21
22 #include "zend.h"
23
24 #define ZEND_CPU_EBX_MASK (1<<30)
25 #define ZEND_CPU_EDX_MASK (1U<<31)
26
27 typedef enum _zend_cpu_feature {
28 /* ECX */
29 ZEND_CPU_FEATURE_SSE3 = (1<<0),
30 ZEND_CPU_FEATURE_PCLMULQDQ = (1<<1),
31 ZEND_CPU_FEATURE_DTES64 = (1<<2),
32 ZEND_CPU_FEATURE_MONITOR = (1<<3),
33 ZEND_CPU_FEATURE_DSCPL = (1<<4),
34 ZEND_CPU_FEATURE_VMX = (1<<5),
35 ZEND_CPU_FEATURE_SMX = (1<<6),
36 ZEND_CPU_FEATURE_EST = (1<<7),
37 ZEND_CPU_FEATURE_TM2 = (1<<8),
38 ZEND_CPU_FEATURE_SSSE3 = (1<<9),
39 ZEND_CPU_FEATURE_CID = (1<<10),
40 ZEND_CPU_FEATURE_SDBG = (1<<11),
41 ZEND_CPU_FEATURE_FMA = (1<<12),
42 ZEND_CPU_FEATURE_CX16 = (1<<13),
43 ZEND_CPU_FEATURE_XTPR = (1<<14),
44 ZEND_CPU_FEATURE_PDCM = (1<<15),
45 /* reserved = (1<<16),*/
46 ZEND_CPU_FEATURE_PCID = (1<<17),
47 ZEND_CPU_FEATURE_DCA = (1<<18),
48 ZEND_CPU_FEATURE_SSE41 = (1<<19),
49 ZEND_CPU_FEATURE_SSE42 = (1<<20),
50 ZEND_CPU_FEATURE_X2APIC = (1<<21),
51 ZEND_CPU_FEATURE_MOVBE = (1<<22),
52 ZEND_CPU_FEATURE_POPCNT = (1<<23),
53 ZEND_CPU_FEATURE_TSC_DEADLINE = (1<<24),
54 ZEND_CPU_FEATURE_AES = (1<<25),
55 ZEND_CPU_FEATURE_XSAVE = (1<<26),
56 ZEND_CPU_FEATURE_OSXSAVE = (1<<27) ,
57 ZEND_CPU_FEATURE_AVX = (1<<28),
58 ZEND_CPU_FEATURE_F16C = (1<<29),
59 /* intentionally don't support = (1<<30) */
60 /* intentionally don't support = (1<<31) */
61
62 /* EBX */
63 ZEND_CPU_FEATURE_AVX2 = (1<<5 | ZEND_CPU_EBX_MASK),
64
65 /* EDX */
66 ZEND_CPU_FEATURE_FPU = (1<<0 | ZEND_CPU_EDX_MASK),
67 ZEND_CPU_FEATURE_VME = (1<<1 | ZEND_CPU_EDX_MASK),
68 ZEND_CPU_FEATURE_DE = (1<<2 | ZEND_CPU_EDX_MASK),
69 ZEND_CPU_FEATURE_PSE = (1<<3 | ZEND_CPU_EDX_MASK),
70 ZEND_CPU_FEATURE_TSC = (1<<4 | ZEND_CPU_EDX_MASK),
71 ZEND_CPU_FEATURE_MSR = (1<<5 | ZEND_CPU_EDX_MASK),
72 ZEND_CPU_FEATURE_PAE = (1<<6 | ZEND_CPU_EDX_MASK),
73 ZEND_CPU_FEATURE_MCE = (1<<7 | ZEND_CPU_EDX_MASK),
74 ZEND_CPU_FEATURE_CX8 = (1<<8 | ZEND_CPU_EDX_MASK),
75 ZEND_CPU_FEATURE_APIC = (1<<9 | ZEND_CPU_EDX_MASK),
76 /* reserved = (1<<10 | ZEND_CPU_EDX_MASK),*/
77 ZEND_CPU_FEATURE_SEP = (1<<11 | ZEND_CPU_EDX_MASK),
78 ZEND_CPU_FEATURE_MTRR = (1<<12 | ZEND_CPU_EDX_MASK),
79 ZEND_CPU_FEATURE_PGE = (1<<13 | ZEND_CPU_EDX_MASK),
80 ZEND_CPU_FEATURE_MCA = (1<<14 | ZEND_CPU_EDX_MASK),
81 ZEND_CPU_FEATURE_CMOV = (1<<15 | ZEND_CPU_EDX_MASK),
82 ZEND_CPU_FEATURE_PAT = (1<<16 | ZEND_CPU_EDX_MASK),
83 ZEND_CPU_FEATURE_PSE36 = (1<<17 | ZEND_CPU_EDX_MASK),
84 ZEND_CPU_FEATURE_PN = (1<<18 | ZEND_CPU_EDX_MASK),
85 ZEND_CPU_FEATURE_CLFLUSH = (1<<19 | ZEND_CPU_EDX_MASK),
86 /* reserved = (1<<20 | ZEND_CPU_EDX_MASK),*/
87 ZEND_CPU_FEATURE_DS = (1<<21 | ZEND_CPU_EDX_MASK),
88 ZEND_CPU_FEATURE_ACPI = (1<<22 | ZEND_CPU_EDX_MASK),
89 ZEND_CPU_FEATURE_MMX = (1<<23 | ZEND_CPU_EDX_MASK),
90 ZEND_CPU_FEATURE_FXSR = (1<<24 | ZEND_CPU_EDX_MASK),
91 ZEND_CPU_FEATURE_SSE = (1<<25 | ZEND_CPU_EDX_MASK),
92 ZEND_CPU_FEATURE_SSE2 = (1<<26 | ZEND_CPU_EDX_MASK),
93 ZEND_CPU_FEATURE_SS = (1<<27 | ZEND_CPU_EDX_MASK),
94 ZEND_CPU_FEATURE_HT = (1<<28 | ZEND_CPU_EDX_MASK),
95 ZEND_CPU_FEATURE_TM = (1<<29 | ZEND_CPU_EDX_MASK)
96 /*intentionally don't support = (1<<30 | ZEND_CPU_EDX_MASK)*/
97 /*intentionally don't support = (1<<31 | ZEND_CPU_EDX_MASK)*/
98 } zend_cpu_feature;
99
100 void zend_cpu_startup(void);
101 ZEND_API int zend_cpu_supports(zend_cpu_feature feature);
102
103 #ifndef __has_attribute
104 # define __has_attribute(x) 0
105 #endif
106
107 /* Address sanitizer is incompatible with ifunc resolvers, so exclude the
108 * CPU support helpers from asan.
109 * See also https://github.com/google/sanitizers/issues/342. */
110 #if __has_attribute(no_sanitize_address)
111 # define ZEND_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
112 #else
113 # define ZEND_NO_SANITIZE_ADDRESS
114 #endif
115
116 #if PHP_HAVE_BUILTIN_CPU_SUPPORTS
117 /* NOTE: you should use following inline function in
118 * resolver functions (ifunc), as it could be called
119 * before all PLT symbols are resolved. in other words,
120 * resolver functions should not depend on any external
121 * functions */
122 ZEND_NO_SANITIZE_ADDRESS
zend_cpu_supports_sse2(void)123 static inline int zend_cpu_supports_sse2(void) {
124 #if PHP_HAVE_BUILTIN_CPU_INIT
125 __builtin_cpu_init();
126 #endif
127 return __builtin_cpu_supports("sse2");
128 }
129
130 ZEND_NO_SANITIZE_ADDRESS
zend_cpu_supports_sse3(void)131 static inline int zend_cpu_supports_sse3(void) {
132 #if PHP_HAVE_BUILTIN_CPU_INIT
133 __builtin_cpu_init();
134 #endif
135 return __builtin_cpu_supports("sse3");
136 }
137
138 ZEND_NO_SANITIZE_ADDRESS
zend_cpu_supports_ssse3(void)139 static inline int zend_cpu_supports_ssse3(void) {
140 #if PHP_HAVE_BUILTIN_CPU_INIT
141 __builtin_cpu_init();
142 #endif
143 return __builtin_cpu_supports("ssse3");
144 }
145
146 ZEND_NO_SANITIZE_ADDRESS
zend_cpu_supports_sse41(void)147 static inline int zend_cpu_supports_sse41(void) {
148 #if PHP_HAVE_BUILTIN_CPU_INIT
149 __builtin_cpu_init();
150 #endif
151 return __builtin_cpu_supports("sse4.1");
152 }
153
154 ZEND_NO_SANITIZE_ADDRESS
zend_cpu_supports_sse42(void)155 static inline int zend_cpu_supports_sse42(void) {
156 #if PHP_HAVE_BUILTIN_CPU_INIT
157 __builtin_cpu_init();
158 #endif
159 return __builtin_cpu_supports("sse4.2");
160 }
161
162 ZEND_NO_SANITIZE_ADDRESS
zend_cpu_supports_avx(void)163 static inline int zend_cpu_supports_avx(void) {
164 #if PHP_HAVE_BUILTIN_CPU_INIT
165 __builtin_cpu_init();
166 #endif
167 return __builtin_cpu_supports("avx");
168 }
169
170 ZEND_NO_SANITIZE_ADDRESS
zend_cpu_supports_avx2(void)171 static inline int zend_cpu_supports_avx2(void) {
172 #if PHP_HAVE_BUILTIN_CPU_INIT
173 __builtin_cpu_init();
174 #endif
175 return __builtin_cpu_supports("avx2");
176 }
177 #else
178
zend_cpu_supports_sse2(void)179 static inline int zend_cpu_supports_sse2(void) {
180 return zend_cpu_supports(ZEND_CPU_FEATURE_SSE2);
181 }
182
zend_cpu_supports_sse3(void)183 static inline int zend_cpu_supports_sse3(void) {
184 return zend_cpu_supports(ZEND_CPU_FEATURE_SSE3);
185 }
186
zend_cpu_supports_ssse3(void)187 static inline int zend_cpu_supports_ssse3(void) {
188 return zend_cpu_supports(ZEND_CPU_FEATURE_SSSE3);
189 }
190
zend_cpu_supports_sse41(void)191 static inline int zend_cpu_supports_sse41(void) {
192 return zend_cpu_supports(ZEND_CPU_FEATURE_SSE41);
193 }
194
zend_cpu_supports_sse42(void)195 static inline int zend_cpu_supports_sse42(void) {
196 return zend_cpu_supports(ZEND_CPU_FEATURE_SSE42);
197 }
198
zend_cpu_supports_avx(void)199 static inline int zend_cpu_supports_avx(void) {
200 return zend_cpu_supports(ZEND_CPU_FEATURE_AVX);
201 }
202
zend_cpu_supports_avx2(void)203 static inline int zend_cpu_supports_avx2(void) {
204 return zend_cpu_supports(ZEND_CPU_FEATURE_AVX2);
205 }
206 #endif
207
208 /* __builtin_cpu_supports has pclmul from gcc9 */
209 #if PHP_HAVE_BUILTIN_CPU_SUPPORTS && (!defined(__GNUC__) || (ZEND_GCC_VERSION >= 9000))
210 ZEND_NO_SANITIZE_ADDRESS
zend_cpu_supports_pclmul(void)211 static inline int zend_cpu_supports_pclmul(void) {
212 #if PHP_HAVE_BUILTIN_CPU_INIT
213 __builtin_cpu_init();
214 #endif
215 return __builtin_cpu_supports("pclmul");
216 }
217 #else
zend_cpu_supports_pclmul(void)218 static inline int zend_cpu_supports_pclmul(void) {
219 return zend_cpu_supports(ZEND_CPU_FEATURE_PCLMULQDQ);
220 }
221 #endif
222
223 #endif
224
