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Rev 427 Rev 430
Line 178... Line 178...
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	xor   eax, eax
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	xor   eax, eax
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        cmp   ebx, esi
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        cmp   ebx, esi
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        sete  al
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        sete  al
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ret
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ret
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; in: ebx = TSS selector index
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;
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; param
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; param
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;  ebx = incoming task
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;  ebx = incoming task
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;  esi = outcomig task
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;  esi = outcomig task
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        add esi, SLOT_BASE
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        add esi, SLOT_BASE
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        mov [esi+APPDATA.saved_esp], esp
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        mov [esi+APPDATA.saved_esp], esp
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        mov esp, [ebx+APPDATA.saved_esp]
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; set thread io map
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        mov ecx, [ebx+APPDATA.io_map]
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        mov edx, [ebx+APPDATA.io_map+4]
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        mov dword [page_tabs+((tss._io_map_0 and -4096) shr 10)], ecx
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        mov esp, [ebx+APPDATA.saved_esp]
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        mov dword [page_tabs+((tss._io_map_1 and -4096) shr 10)], edx
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        mov eax, [ebx+APPDATA.dir_table]
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        mov cr3, eax
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        mov eax, [ebx+APPDATA.dir_table]
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        mov cr3, eax
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        mov ebx, [ebx+APPDATA.pl0_stack]
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        mov ebx, [ebx+APPDATA.pl0_stack]
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        add ebx, RING0_STACK_SIZE
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        add ebx, RING0_STACK_SIZE
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        mov [tss_data+TSS._esp0], ebx
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        mov [tss._esp0], ebx
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        mov ecx, cr0
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        mov ecx, cr0
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        or ecx, CR0_TS   ;set task switch flag
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        or ecx, CR0_TS   ;set task switch flag