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1 : | edgomez | 1382 | ;/**************************************************************************** |
2 : | ; * | ||
3 : | ; * XVID MPEG-4 VIDEO CODEC | ||
4 : | ; * - CPUID check processors capabilities - | ||
5 : | ; * | ||
6 : | ; * Copyright (C) 2001 Michael Militzer <isibaar@xvid.org> | ||
7 : | ; * | ||
8 : | ; * This program is free software ; you can redistribute it and/or modify | ||
9 : | ; * it under the terms of the GNU General Public License as published by | ||
10 : | ; * the Free Software Foundation ; either version 2 of the License, or | ||
11 : | ; * (at your option) any later version. | ||
12 : | ; * | ||
13 : | ; * This program is distributed in the hope that it will be useful, | ||
14 : | ; * but WITHOUT ANY WARRANTY ; without even the implied warranty of | ||
15 : | ; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
16 : | ; * GNU General Public License for more details. | ||
17 : | ; * | ||
18 : | ; * You should have received a copy of the GNU General Public License | ||
19 : | ; * along with this program ; if not, write to the Free Software | ||
20 : | ; * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
21 : | ; * | ||
22 : | edgomez | 1485 | ; * $Id: cpuid.asm,v 1.6 2004-07-10 17:42:18 edgomez Exp $ |
23 : | edgomez | 1382 | ; * |
24 : | ; ***************************************************************************/ | ||
25 : | Isibaar | 3 | |
26 : | edgomez | 1382 | BITS 32 |
27 : | Isibaar | 3 | |
28 : | suxen_drol | 309 | %macro cglobal 1 |
29 : | Isibaar | 3 | %ifdef PREFIX |
30 : | suxen_drol | 309 | global _%1 |
31 : | Isibaar | 3 | %define %1 _%1 |
32 : | %else | ||
33 : | global %1 | ||
34 : | %endif | ||
35 : | %endmacro | ||
36 : | |||
37 : | edgomez | 1382 | ;============================================================================= |
38 : | ; Constants | ||
39 : | ;============================================================================= | ||
40 : | Isibaar | 3 | |
41 : | edgomez | 1382 | %define CPUID_TSC 0x00000010 |
42 : | %define CPUID_MMX 0x00800000 | ||
43 : | %define CPUID_SSE 0x02000000 | ||
44 : | %define CPUID_SSE2 0x04000000 | ||
45 : | Isibaar | 3 | |
46 : | edgomez | 1382 | %define EXT_CPUID_3DNOW 0x80000000 |
47 : | %define EXT_CPUID_AMD_3DNOWEXT 0x40000000 | ||
48 : | %define EXT_CPUID_AMD_MMXEXT 0x00400000 | ||
49 : | Isibaar | 3 | |
50 : | edgomez | 1382 | ;;; NB: Make sure these defines match the ones defined in xvid.h |
51 : | %define XVID_CPU_MMX (1<< 0) | ||
52 : | %define XVID_CPU_MMXEXT (1<< 1) | ||
53 : | %define XVID_CPU_SSE (1<< 2) | ||
54 : | %define XVID_CPU_SSE2 (1<< 3) | ||
55 : | %define XVID_CPU_3DNOW (1<< 4) | ||
56 : | %define XVID_CPU_3DNOWEXT (1<< 5) | ||
57 : | %define XVID_CPU_TSC (1<< 6) | ||
58 : | Isibaar | 3 | |
59 : | edgomez | 1382 | ;============================================================================= |
60 : | ; Read only data | ||
61 : | ;============================================================================= | ||
62 : | Isibaar | 3 | |
63 : | edgomez | 1382 | ALIGN 32 |
64 : | %ifdef FORMAT_COFF | ||
65 : | SECTION .rodata data | ||
66 : | %else | ||
67 : | SECTION .rodata data align=16 | ||
68 : | %endif | ||
69 : | |||
70 : | vendorAMD: | ||
71 : | db "AuthenticAMD" | ||
72 : | |||
73 : | ;============================================================================= | ||
74 : | ; Macros | ||
75 : | ;============================================================================= | ||
76 : | |||
77 : | %macro CHECK_FEATURE 3 | ||
78 : | mov ecx, %1 | ||
79 : | and ecx, edx | ||
80 : | neg ecx | ||
81 : | sbb ecx, ecx | ||
82 : | and ecx, %2 | ||
83 : | or %3, ecx | ||
84 : | Isibaar | 3 | %endmacro |
85 : | |||
86 : | edgomez | 1382 | ;============================================================================= |
87 : | ; Code | ||
88 : | ;============================================================================= | ||
89 : | Isibaar | 3 | |
90 : | edgomez | 1382 | SECTION .text |
91 : | |||
92 : | Isibaar | 3 | ; int check_cpu_feature(void) |
93 : | |||
94 : | cglobal check_cpu_features | ||
95 : | check_cpu_features: | ||
96 : | |||
97 : | edgomez | 1382 | push ebx |
98 : | push esi | ||
99 : | push edi | ||
100 : | push ebp | ||
101 : | suxen_drol | 309 | |
102 : | edgomez | 1485 | sub esp, 12 ; Stack space for vendor name |
103 : | |||
104 : | edgomez | 1382 | xor ebp, ebp |
105 : | suxen_drol | 309 | |
106 : | Isibaar | 3 | ; CPUID command ? |
107 : | edgomez | 1382 | pushfd |
108 : | pop eax | ||
109 : | mov ecx, eax | ||
110 : | xor eax, 0x200000 | ||
111 : | push eax | ||
112 : | popfd | ||
113 : | pushfd | ||
114 : | pop eax | ||
115 : | cmp eax, ecx | ||
116 : | Isibaar | 3 | |
117 : | edgomez | 1382 | jz near .cpu_quit ; no CPUID command -> exit |
118 : | Isibaar | 3 | |
119 : | |||
120 : | ; get vendor string, used later | ||
121 : | edgomez | 1382 | xor eax, eax |
122 : | cpuid | ||
123 : | edgomez | 1485 | mov [esp], ebx ; vendor string |
124 : | mov [esp+4], edx | ||
125 : | mov [esp+8], ecx | ||
126 : | edgomez | 1382 | test eax, eax |
127 : | Isibaar | 3 | |
128 : | edgomez | 1382 | jz near .cpu_quit |
129 : | Isibaar | 3 | |
130 : | edgomez | 1382 | mov eax, 1 |
131 : | cpuid | ||
132 : | Isibaar | 3 | |
133 : | edgomez | 1382 | ; RDTSC command ? |
134 : | CHECK_FEATURE CPUID_TSC, XVID_CPU_TSC, ebp | ||
135 : | Isibaar | 3 | |
136 : | edgomez | 1382 | ; MMX support ? |
137 : | CHECK_FEATURE CPUID_MMX, XVID_CPU_MMX, ebp | ||
138 : | Isibaar | 3 | |
139 : | edgomez | 1382 | ; SSE support ? |
140 : | CHECK_FEATURE CPUID_SSE, (XVID_CPU_MMXEXT|XVID_CPU_SSE), ebp | ||
141 : | Isibaar | 3 | |
142 : | edgomez | 1382 | ; SSE2 support? |
143 : | CHECK_FEATURE CPUID_SSE2, XVID_CPU_SSE2, ebp | ||
144 : | Isibaar | 3 | |
145 : | edgomez | 1382 | ; extended functions? |
146 : | mov eax, 0x80000000 | ||
147 : | cpuid | ||
148 : | cmp eax, 0x80000000 | ||
149 : | jbe near .cpu_quit | ||
150 : | Isibaar | 3 | |
151 : | edgomez | 1382 | mov eax, 0x80000001 |
152 : | cpuid | ||
153 : | Isibaar | 3 | |
154 : | edgomez | 1382 | ; AMD cpu ? |
155 : | lea esi, [vendorAMD] | ||
156 : | edgomez | 1485 | lea edi, [esp] |
157 : | edgomez | 1382 | mov ecx, 12 |
158 : | cld | ||
159 : | repe cmpsb | ||
160 : | jnz .cpu_quit | ||
161 : | Isibaar | 3 | |
162 : | edgomez | 1382 | ; 3DNow! support ? |
163 : | CHECK_FEATURE EXT_CPUID_3DNOW, XVID_CPU_3DNOW, ebp | ||
164 : | suxen_drol | 309 | |
165 : | edgomez | 1382 | ; 3DNOW extended ? |
166 : | CHECK_FEATURE EXT_CPUID_AMD_3DNOWEXT, XVID_CPU_3DNOWEXT, ebp | ||
167 : | Isibaar | 3 | |
168 : | edgomez | 1382 | ; extended MMX ? |
169 : | CHECK_FEATURE EXT_CPUID_AMD_MMXEXT, XVID_CPU_MMXEXT, ebp | ||
170 : | Isibaar | 3 | |
171 : | suxen_drol | 309 | .cpu_quit: |
172 : | |||
173 : | edgomez | 1382 | mov eax, ebp |
174 : | suxen_drol | 309 | |
175 : | edgomez | 1485 | add esp, 12 |
176 : | |||
177 : | edgomez | 1382 | pop ebp |
178 : | pop edi | ||
179 : | pop esi | ||
180 : | pop ebx | ||
181 : | suxen_drol | 309 | |
182 : | edgomez | 1382 | ret |
183 : | suxen_drol | 309 | |
184 : | ; sse/sse2 operating support detection routines | ||
185 : | ; these will trigger an invalid instruction signal if not supported. | ||
186 : | edgomez | 1382 | ALIGN 16 |
187 : | suxen_drol | 309 | cglobal sse_os_trigger |
188 : | sse_os_trigger: | ||
189 : | edgomez | 1382 | xorps xmm0, xmm0 |
190 : | ret | ||
191 : | suxen_drol | 309 | |
192 : | |||
193 : | edgomez | 1382 | ALIGN 16 |
194 : | suxen_drol | 309 | cglobal sse2_os_trigger |
195 : | sse2_os_trigger: | ||
196 : | edgomez | 1382 | xorpd xmm0, xmm0 |
197 : | ret | ||
198 : | suxen_drol | 309 | |
199 : | edgomez | 851 | |
200 : | ; enter/exit mmx state | ||
201 : | edgomez | 1382 | ALIGN 16 |
202 : | edgomez | 851 | cglobal emms_mmx |
203 : | emms_mmx: | ||
204 : | edgomez | 1382 | emms |
205 : | ret | ||
206 : | edgomez | 851 | |
207 : | ; faster enter/exit mmx state | ||
208 : | edgomez | 1382 | ALIGN 16 |
209 : | edgomez | 851 | cglobal emms_3dn |
210 : | emms_3dn: | ||
211 : | edgomez | 1382 | femms |
212 : | ret |
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