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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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214 | serge | 7 | |
593 | mikedld | 8 | $Revision: 593 $ |
9 | |||
10 | |||
214 | serge | 11 | init_fpu: |
12 | clts |
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13 | fninit |
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14 | |||
221 | serge | 15 | bt [cpu_caps], CAPS_SSE |
16 | jnc .no_SSE |
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214 | serge | 17 | |
18 | mov ebx, cr4 |
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19 | mov ecx, cr0 |
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20 | or ebx, CR4_OSFXSR+CR4_OSXMMEXPT |
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21 | mov cr4, ebx |
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22 | |||
23 | and ecx, not (CR0_MP+CR0_EM) |
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24 | or ecx, CR0_NE |
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25 | mov cr0, ecx |
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26 | |||
27 | mov dword [esp-4], SSE_INIT |
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28 | ldmxcsr [esp-4] |
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29 | |||
30 | xorps xmm0, xmm0 |
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31 | xorps xmm1, xmm1 |
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32 | xorps xmm2, xmm2 |
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33 | xorps xmm3, xmm3 |
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34 | xorps xmm4, xmm4 |
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35 | xorps xmm5, xmm5 |
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36 | xorps xmm6, xmm6 |
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37 | xorps xmm7, xmm7 |
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357 | serge | 38 | fxsave [fpu_data] ;[eax] |
214 | serge | 39 | ret |
221 | serge | 40 | .no_SSE: |
214 | serge | 41 | mov ecx, cr0 |
42 | and ecx, not CR0_EM |
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43 | or ecx, CR0_MP+CR0_NE |
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44 | mov cr0, ecx |
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357 | serge | 45 | fnsave [fpu_data] |
214 | serge | 46 | ret |
47 | |||
378 | serge | 48 | ; param |
49 | ; eax= 512 bytes memory area |
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50 | |||
214 | serge | 51 | align 4 |
378 | serge | 52 | fpu_save: |
53 | push ecx |
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54 | push esi |
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55 | push edi |
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56 | |||
57 | pushfd |
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58 | cli |
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59 | |||
214 | serge | 60 | clts |
378 | serge | 61 | mov edi, eax |
214 | serge | 62 | |
378 | serge | 63 | mov ecx, [fpu_owner] |
435 | serge | 64 | mov esi, [CURRENT_TASK] |
65 | cmp ecx, esi |
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378 | serge | 66 | jne .save |
435 | serge | 67 | |
68 | call save_context |
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69 | jmp .exit |
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70 | .save: |
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71 | mov [fpu_owner], esi |
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72 | |||
73 | shl ecx, 8 |
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74 | mov eax, [ecx+SLOT_BASE+APPDATA.fpu_state] |
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75 | |||
76 | call save_context |
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77 | |||
78 | shl esi, 8 |
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79 | mov esi, [esi+SLOT_BASE+APPDATA.fpu_state] |
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378 | serge | 80 | mov ecx, 512/4 |
81 | cld |
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82 | rep movsd |
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83 | fninit |
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435 | serge | 84 | .exit: |
378 | serge | 85 | popfd |
86 | pop edi |
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87 | pop esi |
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88 | pop ecx |
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89 | ret |
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90 | |||
435 | serge | 91 | align 4 |
92 | save_context: |
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221 | serge | 93 | bt [cpu_caps], CAPS_SSE |
214 | serge | 94 | jnc .no_SSE |
95 | |||
435 | serge | 96 | fxsave [eax] |
97 | ret |
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214 | serge | 98 | .no_SSE: |
435 | serge | 99 | fnsave [eax] |
100 | ret |
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214 | serge | 101 | |
102 | align 4 |
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378 | serge | 103 | fpu_restore: |
104 | push ecx |
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105 | push esi |
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106 | |||
107 | mov esi, eax |
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108 | |||
109 | pushfd |
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110 | cli |
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111 | |||
112 | mov ecx, [fpu_owner] |
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113 | mov eax, [CURRENT_TASK] |
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114 | cmp ecx, eax |
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115 | jne .copy |
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116 | |||
117 | clts |
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221 | serge | 118 | bt [cpu_caps], CAPS_SSE |
214 | serge | 119 | jnc .no_SSE |
120 | |||
378 | serge | 121 | fxrstor [esi] |
122 | popfd |
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123 | pop esi |
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124 | pop ecx |
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214 | serge | 125 | ret |
126 | .no_SSE: |
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127 | fnclex ;fix possible problems |
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378 | serge | 128 | frstor [esi] |
129 | popfd |
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130 | pop esi |
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131 | pop ecx |
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214 | serge | 132 | ret |
378 | serge | 133 | .copy: |
134 | shl eax, 8 |
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380 | serge | 135 | mov edi, [eax+SLOT_BASE+APPDATA.fpu_state] |
378 | serge | 136 | mov ecx, 512/4 |
137 | cld |
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138 | rep movsd |
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139 | popfd |
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140 | pop esi |
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141 | pop ecx |
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142 | ret |
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214 | serge | 143 | |
144 | align 4 |
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145 | e7: ;#NM exception handler |
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465 | serge | 146 | save_ring3_context |
147 | clts |
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148 | mov ax, app_data ; |
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149 | mov ds, ax |
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150 | mov es, ax |
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214 | serge | 151 | |
465 | serge | 152 | mov ebx, [fpu_owner] |
153 | cmp ebx, [CURRENT_TASK] |
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154 | je .exit |
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214 | serge | 155 | |
465 | serge | 156 | shl ebx, 8 |
157 | mov eax, [ebx+SLOT_BASE+APPDATA.fpu_state] |
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158 | bt [cpu_caps], CAPS_SSE |
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159 | jnc .no_SSE |
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214 | serge | 160 | |
465 | serge | 161 | fxsave [eax] |
162 | mov ebx, [CURRENT_TASK] |
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163 | mov [fpu_owner], ebx |
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164 | shl ebx, 8 |
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165 | mov eax, [ebx+SLOT_BASE+APPDATA.fpu_state] |
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166 | fxrstor [eax] |
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214 | serge | 167 | .exit: |
465 | serge | 168 | restore_ring3_context |
169 | iret |
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214 | serge | 170 | |
171 | .no_SSE: |
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465 | serge | 172 | fnsave [eax] |
173 | mov ebx, [CURRENT_TASK] |
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174 | mov [fpu_owner], ebx |
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175 | shl ebx, 8 |
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176 | mov eax, [ebx+SLOT_BASE+APPDATA.fpu_state] |
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177 | frstor [eax] |
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178 | restore_ring3_context |
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179 | iret |
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214 | serge | 180 | |
181 | iglobal |
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182 | fpu_owner dd 1 |
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183 | endg |
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184 | |||
185 | reg_eip equ ebp+4 |
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186 | reg_cs equ ebp+8 |
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187 | reg_eflags equ ebp+12 |
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188 | reg_esp equ ebp+16 |
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189 | reg_ss equ ebp+20 |
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190 | |||
191 | align 4 |
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192 | except_16: ;fpu native exceptions handler |
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193 | push ebp |
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194 | mov ebp, esp |
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195 | |||
196 | push eax |
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197 | push ebx |
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198 | push ecx |
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199 | push edx |
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200 | |||
465 | serge | 201 | mov ebx, [CURRENT_TASK] |
214 | serge | 202 | shl ebx, 8 |
203 | |||
465 | serge | 204 | mov eax, [ebx+SLOT_BASE+APPDATA.fpu_handler] |
214 | serge | 205 | test eax, eax |
206 | jz .default |
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207 | |||
208 | mov ecx, [reg_eip] |
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209 | mov edx, [reg_esp] |
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210 | sub edx, 4 |
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465 | serge | 211 | mov [edx], ecx |
214 | serge | 212 | mov [reg_esp], edx |
213 | mov dword [reg_eip], eax |
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214 | |||
215 | pop edx |
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216 | pop ecx |
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217 | pop ebx |
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218 | pop eax |
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219 | |||
220 | leave |
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221 | iretd |
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222 | |||
223 | .default: |
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224 | pop edx |
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225 | pop ecx |
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226 | pop ebx |
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227 | pop eax |
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228 | leave |
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229 | |||
230 | save_ring3_context ;debugger support |
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231 | |||
232 | mov bl, 16 |
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233 | jmp exc_c |
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234 | |||
235 | align 4 |
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236 | except_19: ;sse exceptions handler |
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237 | push ebp |
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238 | mov ebp, esp |
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239 | |||
240 | push eax |
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241 | push ebx |
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242 | push ecx |
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243 | push edx |
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244 | |||
465 | serge | 245 | mov ebx, [current_slot] |
214 | serge | 246 | |
465 | serge | 247 | mov eax, [ebx+APPDATA.sse_handler] |
214 | serge | 248 | test eax, eax |
249 | jz .default |
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250 | |||
251 | mov ecx, [reg_eip] |
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252 | mov edx, [reg_esp] |
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253 | sub edx, 4 |
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465 | serge | 254 | mov [edx], ecx |
214 | serge | 255 | mov [reg_esp], edx |
256 | mov dword [reg_eip], eax |
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257 | |||
258 | pop edx |
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259 | pop ecx |
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260 | pop ebx |
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261 | pop eax |
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262 | |||
263 | leave |
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264 | iretd |
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265 | |||
266 | .default: |
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267 | pop edx |
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268 | pop ecx |
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269 | pop ebx |
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270 | pop eax |
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271 | leave |
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272 | |||
273 | save_ring3_context ;debugger support |
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274 | |||
275 | mov bl, 19 |
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276 | jmp exc_c |
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277 | |||
278 | restore reg_eip |
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279 | restore reg_cs |
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280 | restore reg_eflags |
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281 | restore reg_esp |
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282 | restore reg_ss |
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283 |