| 36,41 → 36,95 |
|---|
| fnsave [fpu_data] |
| ret |
| |
| ; param |
| ; eax= 512 bytes memory area |
| |
| align 4 |
| proc fpu_save |
| fpu_save: |
| push ecx |
| push esi |
| push edi |
| |
| pushfd |
| cli |
| |
| clts |
| mov ebx, [fpu_owner] |
| shl ebx, 8 |
| mov eax, [ebx+PROC_BASE+0x10] |
| mov ebx, [CURRENT_TASK] |
| mov [fpu_owner], ebx |
| mov edi, eax |
| |
| mov ecx, [fpu_owner] |
| mov eax, [CURRENT_TASK] |
| cmp ecx, eax |
| jne .save |
| .copy: |
| shl eax, 8 |
| mov esi, [eax+PROC_BASE+APPDATA.fpu_state] |
| mov ecx, 512/4 |
| cld |
| rep movsd |
| fninit |
| |
| popfd |
| pop edi |
| pop esi |
| pop ecx |
| ret |
| .save: |
| mov [fpu_owner], eax |
| |
| shl ecx, 8 |
| mov ecx, [ecx+PROC_BASE+APPDATA.fpu_state] |
| |
| bt [cpu_caps], CAPS_SSE |
| jnc .no_SSE |
| |
| fxsave [eax] |
| fninit ;re-init fpu |
| ret |
| fxsave [ecx] |
| jmp .copy |
| .no_SSE: |
| fnsave [eax] |
| ret |
| endp |
| fnsave [ecx] |
| jmp .copy |
| |
| align 4 |
| proc fpu_restore |
| mov ebx, [CURRENT_TASK] |
| shl ebx, 8 |
| mov eax, [ebx+PROC_BASE+0x10] |
| fpu_restore: |
| push ecx |
| push esi |
| |
| mov esi, eax |
| |
| pushfd |
| cli |
| |
| mov ecx, [fpu_owner] |
| mov eax, [CURRENT_TASK] |
| cmp ecx, eax |
| jne .copy |
| |
| clts |
| |
| bt [cpu_caps], CAPS_SSE |
| jnc .no_SSE |
| |
| fxrstor [eax] |
| fxrstor [esi] |
| popfd |
| pop esi |
| pop ecx |
| ret |
| .no_SSE: |
| fnclex ;fix possible problems |
| frstor [eax] |
| frstor [esi] |
| popfd |
| pop esi |
| pop ecx |
| ret |
| endp |
| .copy: |
| shl eax, 8 |
| mov edi, [eax+PROC_BASE+APPDATA.fpu_state] |
| mov ecx, 512/4 |
| cld |
| rep movsd |
| popfd |
| pop esi |
| pop ecx |
| ret |
| |
| align 4 |
| e7: ;#NM exception handler |