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54 lines
1.2 KiB
ArmAsm
54 lines
1.2 KiB
ArmAsm
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#include "ultra64/asm.h"
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#include "ultra64/r4300.h"
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#include "ultra64/thread.h"
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.set noat
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.set noreorder
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.section .text
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.balign 16
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LEAF(__osDisableInt)
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lui $t2, %hi(__OSGlobalIntMask)
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addiu $t2, $t2, %lo(__OSGlobalIntMask)
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lw $t3, ($t2)
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andi $t3, $t3, SR_IMASK
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mfc0 $t0, C0_SR
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li $at, ~SR_IE
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and $t1, $t0, $at
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mtc0 $t1, C0_SR
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andi $v0, $t0, SR_IE
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lw $t0, ($t2)
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andi $t0, $t0, SR_IMASK
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beq $t0, $t3, No_Change_Global_Int
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lui $t2, %hi(__osRunningThread)
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//! @bug this addiu should be lw, it may never come up in practice as to reach this code
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//! the CPU bits of __OSGlobalIntMask must have changed while this function is running.
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addiu $t2, $t2, %lo(__osRunningThread)
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lw $t1, THREAD_SR($t2)
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andi $t2, $t1, SR_IMASK
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and $t2, $t2, $t0
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li $at, ~SR_IMASK
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and $t1, $t1, $at
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or $t1, $t1, $t2
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li $at, ~SR_IE
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and $t1, $t1, $at
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mtc0 $t1, C0_SR
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nop
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nop
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No_Change_Global_Int:
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jr $ra
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nop
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END(__osDisableInt)
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LEAF(__osRestoreInt)
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mfc0 $t0, C0_SR
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or $t0, $t0, $a0
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mtc0 $t0, C0_SR
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nop
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nop
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jr $ra
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nop
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END(__osRestoreInt)
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