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$Revision: 431 $
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$Revision: 435 $
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                              ;;
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;;                                                              ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;                                                              ;;
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           clts
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           clts
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           mov edi, eax
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           mov edi, eax
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           mov ecx, [fpu_owner]
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           mov ecx, [fpu_owner]
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           mov eax, [CURRENT_TASK]
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           mov esi, [CURRENT_TASK]
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           cmp ecx, esi
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           jne .save
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           cmp ecx, eax
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           call save_context
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           jmp .exit
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.save:
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           jne .save
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           mov [fpu_owner], esi
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           shl ecx, 8
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           mov eax, [ecx+SLOT_BASE+APPDATA.fpu_state]
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           call save_context
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.copy:
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           shl eax, 8
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           shl esi, 8
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           mov esi, [eax+SLOT_BASE+APPDATA.fpu_state]
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           mov esi, [esi+SLOT_BASE+APPDATA.fpu_state]
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           mov ecx, 512/4
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           mov ecx, 512/4
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           cld
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           cld
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           rep movsd
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           rep movsd
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           fninit
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           fninit
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.exit:
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           popfd
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           popfd
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           pop edi
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           pop edi
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           pop esi
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           pop esi
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           pop ecx
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           ret
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.save:
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           mov [fpu_owner], eax
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           pop ecx
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           ret
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           shl ecx, 8
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           mov ecx, [ecx+SLOT_BASE+APPDATA.fpu_state]
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align 4
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save_context:
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           bt [cpu_caps], CAPS_SSE
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           bt [cpu_caps], CAPS_SSE
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           jnc .no_SSE
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           jnc .no_SSE
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           fxsave [ecx]
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           fxsave [eax]
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           jmp .copy
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           ret
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.no_SSE:
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.no_SSE:
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           fnsave [ecx]
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           fnsave [eax]
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           jmp .copy
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           ret
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           mov eax, [CURRENT_TASK]
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           mov eax, [CURRENT_TASK]
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           cmp ecx, eax
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           cmp ecx, eax
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           jne .copy
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           jne .copy
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           clts
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           clts
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           bt [cpu_caps], CAPS_SSE
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           bt [cpu_caps], CAPS_SSE
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           jnc .no_SSE
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           jnc .no_SSE
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