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Rev 4377 Rev 4692
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 * %o1	Userspace stack pointer address.
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 * %o1	Userspace stack pointer address.
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 * %o2  Userspace address of uarg structure.
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 * %o2  Userspace address of uarg structure.
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 */
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 */
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.global switch_to_userspace
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.global switch_to_userspace
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switch_to_userspace:
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switch_to_userspace:
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	save %o1, -STACK_WINDOW_SAVE_AREA_SIZE, %sp
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	save %o1, -(STACK_WINDOW_SAVE_AREA_SIZE + STACK_ARG_SAVE_AREA_SIZE), %sp
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	flushw
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	flushw
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	wrpr %g0, 0, %cleanwin		! avoid information leak
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	wrpr %g0, 0, %cleanwin		! avoid information leak
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	mov %i2, %o0			! uarg
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	mov %i2, %o0			! uarg
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	xor %o1, %o1, %o1		! %o1 is defined to hold pcb_ptr
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	xor %o1, %o1, %o1		! %o1 is defined to hold pcb_ptr