32 lines
605 B
ArmAsm
32 lines
605 B
ArmAsm
.thumb
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.syntax unified
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.text
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.globl sem_post32
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.type sem_post32, %function
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sem_post32:
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1:
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ldrex r2, [r0]
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add r2, r2, r1
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strex r3, r2, [r0]
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teq r3, #0
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bne 1b
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mov r0, r2
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bx lr
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.globl sem_wait32
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.type sem_wait32, %function
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sem_wait32:
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1:
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ldrex r2, [r0]
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sub r2, r2, r1
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strex r3, r2, [r0]
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teq r3, #0
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bne 1b
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mov r0, r2
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bx lr
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