settlbasid.s
1.08 KB
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/**************************************************************************
* *
* Copyright (C) 1994, Silicon Graphics, Inc. *
* *
* These coded instructions, statements, and computer programs contain *
* unpublished proprietary information of Silicon Graphics, Inc., and *
* are protected by Federal copyright law. They may not be disclosed *
* to third parties or copied or duplicated in any form, in whole or *
* in part, without the prior written consent of Silicon Graphics, Inc. *
* *
**************************************************************************/
#include <asm.h>
#include <regdef.h>
#include <R4300.h>
#include <ultraerror.h>
/*
* void osSetTLBASID(s32 asid);
*/
LEAF(osSetTLBASID)
#ifdef _DEBUG
.set reorder
bgez a0,1f # check if asid >= 0
b 2f
1:
li t1,TLBHI_NPID # check if asid <= TLBHI_NPID
ble a0,t1,3f
2:
move a2,a0 # invoke error handler if not
li a0,ERR_OSSETTLBASID
li a1,1
j __osError
3:
#endif
.set noreorder
mtc0 a0,C0_ENTRYHI # TLB PID is in ENTRYHI register
j ra
nop
END(osSetTLBASID)