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#include "PR/R4300.h"
#include "sys/asm.h"
#include "sys/regdef.h"
#include "PR/os_version.h"
#include "threadasm.h"
.text
.set noreorder
LEAF(__osDisableInt)
#if BUILD_VERSION >= VERSION_J
la t2, __OSGlobalIntMask
lw t3, (t2)
andi t3, SR_IMASK
mfc0 t0, C0_SR
and t1, t0, ~SR_IE
mtc0 t1, C0_SR
andi v0, t0, SR_IE
lw t0, (t2)
andi t0, SR_IMASK
beq t0, t3, No_Change_Global_Int
# @bug this la should be lw, it may never come up in practice as to reach this code
# the CPU bits of __OSGlobalIntMask must have changed while this function is running.
la t2, __osRunningThread # this is intentionally a macro in the branch delay slot
lw t1, THREAD_SR(t2)
andi t2, t1, SR_IMASK
and t2, t0
and t1, ~SR_IMASK
or t1, t2
and t1, ~SR_IE
mtc0 t1, C0_SR
nop
nop
No_Change_Global_Int:
jr ra
nop
#else
mfc0 t0, C0_SR
and t1, t0, ~SR_IE
mtc0 t1, C0_SR
andi v0, t0, SR_IE
nop
jr ra
nop
#endif
END(__osDisableInt)
LEAF(__osRestoreInt)
mfc0 t0, C0_SR
or t0, t0, a0
mtc0 t0, C0_SR
nop
nop
jr ra
nop
END(__osRestoreInt)
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