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#include <arch/asm/regname.h>
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#include <arch/asm/regname.h>
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.text
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.text
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.global userspace_asm
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.global iret
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.global iret
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.global memsetb
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.global memsetb
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.global memcpy
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.global memcpy
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userspace_asm:
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	# r3 = uspace_uarg
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	# r4 = stack
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	# r5 = entry
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	mfmsr r31
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	rlwinm r31, r31, 0, 17, 15
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	mtmsr r31
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	# set entry point
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	mtsrr0 r5
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	# set problem state, enable interrupts
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	ori r31, r31, 1 << 14
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	ori r31, r31, 1 << 15
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	mtsrr1 r31
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	# set stack
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	mr sp, r4
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	# jump to userspace
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	rfi
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iret:
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iret:
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	lwz r3, 144(sp)
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	lwz r3, 144(sp)
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	mtxer r3
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	mtxer r3
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	lwz r3, 140(sp)
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	lwz r3, 140(sp)