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4d157a3d MF |
1 | /* |
2 | * Helper cpuid.h file copied from gcc-4.8.0. Code in gdb should not | |
3 | * include this directly, but pull in i386-cpuid.h and use that func. | |
4 | */ | |
5 | /* | |
28e7fd62 | 6 | * Copyright (C) 2007-2013 Free Software Foundation, Inc. |
a055a187 L |
7 | * |
8 | * This file is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 3, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * This file is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * Under Section 7 of GPL version 3, you are granted additional | |
19 | * permissions described in the GCC Runtime Library Exception, version | |
20 | * 3.1, as published by the Free Software Foundation. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License and | |
23 | * a copy of the GCC Runtime Library Exception along with this program; | |
24 | * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
25 | * <http://www.gnu.org/licenses/>. | |
26 | */ | |
83ecb59f | 27 | |
a055a187 L |
28 | /* %ecx */ |
29 | #define bit_SSE3 (1 << 0) | |
30 | #define bit_PCLMUL (1 << 1) | |
4d157a3d | 31 | #define bit_LZCNT (1 << 5) |
a055a187 L |
32 | #define bit_SSSE3 (1 << 9) |
33 | #define bit_FMA (1 << 12) | |
34 | #define bit_CMPXCHG16B (1 << 13) | |
35 | #define bit_SSE4_1 (1 << 19) | |
36 | #define bit_SSE4_2 (1 << 20) | |
37 | #define bit_MOVBE (1 << 22) | |
38 | #define bit_POPCNT (1 << 23) | |
39 | #define bit_AES (1 << 25) | |
40 | #define bit_XSAVE (1 << 26) | |
41 | #define bit_OSXSAVE (1 << 27) | |
42 | #define bit_AVX (1 << 28) | |
4d157a3d MF |
43 | #define bit_F16C (1 << 29) |
44 | #define bit_RDRND (1 << 30) | |
83ecb59f | 45 | |
a055a187 L |
46 | /* %edx */ |
47 | #define bit_CMPXCHG8B (1 << 8) | |
48 | #define bit_CMOV (1 << 15) | |
49 | #define bit_MMX (1 << 23) | |
50 | #define bit_FXSAVE (1 << 24) | |
51 | #define bit_SSE (1 << 25) | |
52 | #define bit_SSE2 (1 << 26) | |
83ecb59f | 53 | |
a055a187 L |
54 | /* Extended Features */ |
55 | /* %ecx */ | |
56 | #define bit_LAHF_LM (1 << 0) | |
57 | #define bit_ABM (1 << 5) | |
58 | #define bit_SSE4a (1 << 6) | |
4d157a3d | 59 | #define bit_PRFCHW (1 << 8) |
a055a187 L |
60 | #define bit_XOP (1 << 11) |
61 | #define bit_LWP (1 << 15) | |
62 | #define bit_FMA4 (1 << 16) | |
4d157a3d | 63 | #define bit_TBM (1 << 21) |
a9762ec7 | 64 | |
a055a187 | 65 | /* %edx */ |
4d157a3d | 66 | #define bit_MMXEXT (1 << 22) |
a055a187 L |
67 | #define bit_LM (1 << 29) |
68 | #define bit_3DNOWP (1 << 30) | |
69 | #define bit_3DNOW (1 << 31) | |
a9762ec7 | 70 | |
4d157a3d MF |
71 | /* Extended Features (%eax == 7) */ |
72 | #define bit_FSGSBASE (1 << 0) | |
73 | #define bit_BMI (1 << 3) | |
74 | #define bit_HLE (1 << 4) | |
75 | #define bit_AVX2 (1 << 5) | |
76 | #define bit_BMI2 (1 << 8) | |
77 | #define bit_RTM (1 << 11) | |
78 | #define bit_RDSEED (1 << 18) | |
79 | #define bit_ADX (1 << 19) | |
80 | ||
81 | /* Extended State Enumeration Sub-leaf (%eax == 13, %ecx == 1) */ | |
82 | #define bit_XSAVEOPT (1 << 0) | |
83 | ||
84 | /* Signatures for different CPU implementations as returned in uses | |
85 | of cpuid with level 0. */ | |
86 | #define signature_AMD_ebx 0x68747541 | |
87 | #define signature_AMD_ecx 0x444d4163 | |
88 | #define signature_AMD_edx 0x69746e65 | |
89 | ||
90 | #define signature_CENTAUR_ebx 0x746e6543 | |
91 | #define signature_CENTAUR_ecx 0x736c7561 | |
92 | #define signature_CENTAUR_edx 0x48727561 | |
93 | ||
94 | #define signature_CYRIX_ebx 0x69727943 | |
95 | #define signature_CYRIX_ecx 0x64616574 | |
96 | #define signature_CYRIX_edx 0x736e4978 | |
97 | ||
98 | #define signature_INTEL_ebx 0x756e6547 | |
99 | #define signature_INTEL_ecx 0x6c65746e | |
100 | #define signature_INTEL_edx 0x49656e69 | |
101 | ||
102 | #define signature_TM1_ebx 0x6e617254 | |
103 | #define signature_TM1_ecx 0x55504361 | |
104 | #define signature_TM1_edx 0x74656d73 | |
105 | ||
106 | #define signature_TM2_ebx 0x756e6547 | |
107 | #define signature_TM2_ecx 0x3638784d | |
108 | #define signature_TM2_edx 0x54656e69 | |
109 | ||
110 | #define signature_NSC_ebx 0x646f6547 | |
111 | #define signature_NSC_ecx 0x43534e20 | |
112 | #define signature_NSC_edx 0x79622065 | |
113 | ||
114 | #define signature_NEXGEN_ebx 0x4778654e | |
115 | #define signature_NEXGEN_ecx 0x6e657669 | |
116 | #define signature_NEXGEN_edx 0x72446e65 | |
117 | ||
118 | #define signature_RISE_ebx 0x65736952 | |
119 | #define signature_RISE_ecx 0x65736952 | |
120 | #define signature_RISE_edx 0x65736952 | |
121 | ||
122 | #define signature_SIS_ebx 0x20536953 | |
123 | #define signature_SIS_ecx 0x20536953 | |
124 | #define signature_SIS_edx 0x20536953 | |
125 | ||
126 | #define signature_UMC_ebx 0x20434d55 | |
127 | #define signature_UMC_ecx 0x20434d55 | |
128 | #define signature_UMC_edx 0x20434d55 | |
129 | ||
130 | #define signature_VIA_ebx 0x20414956 | |
131 | #define signature_VIA_ecx 0x20414956 | |
132 | #define signature_VIA_edx 0x20414956 | |
133 | ||
134 | #define signature_VORTEX_ebx 0x74726f56 | |
135 | #define signature_VORTEX_ecx 0x436f5320 | |
136 | #define signature_VORTEX_edx 0x36387865 | |
83ecb59f | 137 | |
a055a187 L |
138 | #if defined(__i386__) && defined(__PIC__) |
139 | /* %ebx may be the PIC register. */ | |
140 | #if __GNUC__ >= 3 | |
141 | #define __cpuid(level, a, b, c, d) \ | |
4d157a3d | 142 | __asm__ ("xchg{l}\t{%%}ebx, %k1\n\t" \ |
a055a187 | 143 | "cpuid\n\t" \ |
4d157a3d MF |
144 | "xchg{l}\t{%%}ebx, %k1\n\t" \ |
145 | : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ | |
a055a187 | 146 | : "0" (level)) |
83ecb59f | 147 | |
a055a187 | 148 | #define __cpuid_count(level, count, a, b, c, d) \ |
4d157a3d | 149 | __asm__ ("xchg{l}\t{%%}ebx, %k1\n\t" \ |
a055a187 | 150 | "cpuid\n\t" \ |
4d157a3d MF |
151 | "xchg{l}\t{%%}ebx, %k1\n\t" \ |
152 | : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ | |
a055a187 L |
153 | : "0" (level), "2" (count)) |
154 | #else | |
155 | /* Host GCCs older than 3.0 weren't supporting Intel asm syntax | |
156 | nor alternatives in i386 code. */ | |
157 | #define __cpuid(level, a, b, c, d) \ | |
4d157a3d | 158 | __asm__ ("xchgl\t%%ebx, %k1\n\t" \ |
a055a187 | 159 | "cpuid\n\t" \ |
4d157a3d MF |
160 | "xchgl\t%%ebx, %k1\n\t" \ |
161 | : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ | |
a055a187 | 162 | : "0" (level)) |
83ecb59f | 163 | |
a055a187 | 164 | #define __cpuid_count(level, count, a, b, c, d) \ |
4d157a3d | 165 | __asm__ ("xchgl\t%%ebx, %k1\n\t" \ |
a055a187 | 166 | "cpuid\n\t" \ |
4d157a3d MF |
167 | "xchgl\t%%ebx, %k1\n\t" \ |
168 | : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ | |
a055a187 | 169 | : "0" (level), "2" (count)) |
83ecb59f | 170 | #endif |
4d157a3d MF |
171 | #elif defined(__x86_64__) && (defined(__code_model_medium__) || defined(__code_model_large__)) && defined(__PIC__) |
172 | /* %rbx may be the PIC register. */ | |
173 | #define __cpuid(level, a, b, c, d) \ | |
174 | __asm__ ("xchg{q}\t{%%}rbx, %q1\n\t" \ | |
175 | "cpuid\n\t" \ | |
176 | "xchg{q}\t{%%}rbx, %q1\n\t" \ | |
177 | : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ | |
178 | : "0" (level)) | |
179 | ||
180 | #define __cpuid_count(level, count, a, b, c, d) \ | |
181 | __asm__ ("xchg{q}\t{%%}rbx, %q1\n\t" \ | |
182 | "cpuid\n\t" \ | |
183 | "xchg{q}\t{%%}rbx, %q1\n\t" \ | |
184 | : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ | |
185 | : "0" (level), "2" (count)) | |
a055a187 L |
186 | #else |
187 | #define __cpuid(level, a, b, c, d) \ | |
188 | __asm__ ("cpuid\n\t" \ | |
189 | : "=a" (a), "=b" (b), "=c" (c), "=d" (d) \ | |
190 | : "0" (level)) | |
83ecb59f | 191 | |
a055a187 L |
192 | #define __cpuid_count(level, count, a, b, c, d) \ |
193 | __asm__ ("cpuid\n\t" \ | |
194 | : "=a" (a), "=b" (b), "=c" (c), "=d" (d) \ | |
195 | : "0" (level), "2" (count)) | |
196 | #endif | |
83ecb59f | 197 | |
a055a187 L |
198 | /* Return highest supported input value for cpuid instruction. ext can |
199 | be either 0x0 or 0x8000000 to return highest supported value for | |
200 | basic or extended cpuid information. Function returns 0 if cpuid | |
201 | is not supported or whatever cpuid returns in eax register. If sig | |
202 | pointer is non-null, then first four bytes of the signature | |
203 | (as found in ebx register) are returned in location pointed by sig. */ | |
204 | ||
205 | static __inline unsigned int | |
206 | __get_cpuid_max (unsigned int __ext, unsigned int *__sig) | |
83ecb59f | 207 | { |
a055a187 | 208 | unsigned int __eax, __ebx, __ecx, __edx; |
83ecb59f | 209 | |
4d157a3d | 210 | #ifdef __i386__ |
83ecb59f | 211 | /* See if we can use cpuid. On AMD64 we always can. */ |
4d157a3d | 212 | #if __GNUC__ >= 3 |
a055a187 L |
213 | __asm__ ("pushf{l|d}\n\t" |
214 | "pushf{l|d}\n\t" | |
215 | "pop{l}\t%0\n\t" | |
216 | "mov{l}\t{%0, %1|%1, %0}\n\t" | |
217 | "xor{l}\t{%2, %0|%0, %2}\n\t" | |
218 | "push{l}\t%0\n\t" | |
219 | "popf{l|d}\n\t" | |
220 | "pushf{l|d}\n\t" | |
221 | "pop{l}\t%0\n\t" | |
222 | "popf{l|d}\n\t" | |
223 | : "=&r" (__eax), "=&r" (__ebx) | |
224 | : "i" (0x00200000)); | |
225 | #else | |
226 | /* Host GCCs older than 3.0 weren't supporting Intel asm syntax | |
227 | nor alternatives in i386 code. */ | |
228 | __asm__ ("pushfl\n\t" | |
229 | "pushfl\n\t" | |
230 | "popl\t%0\n\t" | |
231 | "movl\t%0, %1\n\t" | |
232 | "xorl\t%2, %0\n\t" | |
233 | "pushl\t%0\n\t" | |
234 | "popfl\n\t" | |
235 | "pushfl\n\t" | |
236 | "popl\t%0\n\t" | |
237 | "popfl\n\t" | |
238 | : "=&r" (__eax), "=&r" (__ebx) | |
83ecb59f | 239 | : "i" (0x00200000)); |
83ecb59f JB |
240 | #endif |
241 | ||
a055a187 L |
242 | if (!((__eax ^ __ebx) & 0x00200000)) |
243 | return 0; | |
83ecb59f | 244 | #endif |
a055a187 L |
245 | |
246 | /* Host supports cpuid. Return highest supported cpuid input value. */ | |
247 | __cpuid (__ext, __eax, __ebx, __ecx, __edx); | |
248 | ||
249 | if (__sig) | |
250 | *__sig = __ebx; | |
251 | ||
252 | return __eax; | |
253 | } | |
254 | ||
255 | /* Return cpuid data for requested cpuid level, as found in returned | |
256 | eax, ebx, ecx and edx registers. The function checks if cpuid is | |
257 | supported and returns 1 for valid cpuid information or 0 for | |
258 | unsupported cpuid level. All pointers are required to be non-null. */ | |
259 | ||
260 | static __inline int | |
261 | __get_cpuid (unsigned int __level, | |
262 | unsigned int *__eax, unsigned int *__ebx, | |
263 | unsigned int *__ecx, unsigned int *__edx) | |
264 | { | |
265 | unsigned int __ext = __level & 0x80000000; | |
266 | ||
267 | if (__get_cpuid_max (__ext, 0) < __level) | |
268 | return 0; | |
269 | ||
270 | __cpuid (__level, *__eax, *__ebx, *__ecx, *__edx); | |
271 | return 1; | |
272 | } |