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Rev 357 Rev 378
Line 34... Line 34...
34 
           mov cr0, ecx
 34 
           mov cr0, ecx
35 
           fnsave [fpu_data]
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           fnsave [fpu_data]
36 
           ret
 36 
           ret
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 37 
 
Line -... Line 38...
- 
 
 38 
; param
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 39 
;  eax= 512 bytes memory area
- 
 
 40 
 
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align 4
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align 4
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proc fpu_save
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fpu_save:
- 
 
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           push ecx
- 
 
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           push esi
- 
 
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           push edi
- 
 
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- 
 
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           pushfd
- 
 
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           cli
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           clts
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           clts
- 
 
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           mov edi, eax
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41 
           mov ebx, [fpu_owner]
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           mov ecx, [fpu_owner]
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           mov eax, [CURRENT_TASK]
- 
 
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           cmp ecx, eax
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           jne .save
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.copy:
42 
           shl ebx, 8
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           shl eax, 8
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           mov eax, [ebx+PROC_BASE+0x10]
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           mov esi, [eax+PROC_BASE+APPDATA.fpu_state]
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           mov ebx, [CURRENT_TASK]
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           mov ecx, 512/4
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           cld
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           rep movsd
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           fninit
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- 
 
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           popfd
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           pop edi
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           pop esi
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           pop ecx
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           ret
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.save:
45 
           mov [fpu_owner], ebx
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           mov [fpu_owner], eax
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- 
 
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           shl ecx, 8
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           mov ecx, [ecx+PROC_BASE+APPDATA.fpu_state]
Line 46... Line 75...
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 75 
 
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           bt [cpu_caps], CAPS_SSE
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           bt [cpu_caps], CAPS_SSE
Line 48... Line 77...
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           jnc .no_SSE
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           jnc .no_SSE
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 - 
 
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           fxsave [eax]
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           fninit            ;re-init fpu
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           fxsave [ecx]
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           ret
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           jmp .copy
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.no_SSE:
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.no_SSE:
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           fnsave [eax]
 - 
 
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           ret
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           fnsave [ecx]
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endp
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           jmp .copy
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- 
 
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align 4
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fpu_restore:
- 
 
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           push ecx
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           push esi
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- 
 
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           mov esi, eax
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- 
 
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           pushfd
57 
 
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           cli
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align 4
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59 
proc fpu_restore
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           mov ecx, [fpu_owner]
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           mov eax, [CURRENT_TASK]
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           cmp ecx, eax
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           jne .copy
60 
           mov ebx, [CURRENT_TASK]
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61 
           shl ebx, 8
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           clts
Line 62... Line 101...
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           mov eax, [ebx+PROC_BASE+0x10]
 101 
 
- 
 
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           bt [cpu_caps], CAPS_SSE
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           jnc .no_SSE
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63 
           bt [cpu_caps], CAPS_SSE
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           fxrstor [esi]
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           jnc .no_SSE
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           popfd
65 
 
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           pop esi
66 
           fxrstor [eax]
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           pop ecx
- 
 
 109 
           ret
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.no_SSE:
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           fnclex               ;fix possible problems
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           frstor [esi]
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           popfd
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           pop esi
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           pop ecx
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           ret
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.copy:
- 
 
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           shl eax, 8
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           mov edi, [eax+PROC_BASE+APPDATA.fpu_state]
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           mov ecx, 512/4
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           cld
67 
           ret
 122 
           rep movsd
68 
.no_SSE:
 - 
 
Line 69... Line 123...
69 
           fnclex               ;fix possible problems
 123 
           popfd
70 
           frstor [eax]
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           pop esi
71 
           ret
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           pop ecx
72 
endp
 126 
           ret