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#include "PR/R4300.h"
#include "sys/asm.h"
#include "sys/regdef.h"
.text
.set noreorder
LEAF(__osProbeTLB)
mfc0 t0, C0_ENTRYHI
andi t1, t0, TLBHI_PIDMASK
and t2, a0, -8192 # This also works: (TLBHI_VPN2MASK << 32) >> 32
or t1, t1, t2
mtc0 t1, C0_ENTRYHI
nop
nop
nop
tlbp
nop
nop
mfc0 t3, C0_INX
and t3, t3, TLBINX_PROBE
bnez t3, 3f
nop
tlbr
nop
nop
nop
mfc0 t3, C0_PAGEMASK
addi t3, t3, DCACHE_SIZE
srl t3, t3, 0x1
and ta0, t3, a0
bnez ta0, 1f
addi t3, t3,-1
mfc0 v0, C0_ENTRYLO0
b 2f
nop
1:
mfc0 v0, C0_ENTRYLO1
2:
andi ta1, v0,TLBLO_V
beqz ta1, 3f
nop
and v0, v0, TLBLO_PFNMASK
sll v0, v0, TLBLO_PFNSHIFT
and ta1, a0, t3
add v0, v0, ta1
b 4f
nop
3:
li v0, -1
4:
mtc0 t0, C0_ENTRYHI
jr ra
nop
END(__osProbeTLB)
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