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	b _memsetb
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	b _memsetb
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	nop
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	nop
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.macro WRITE_ALTERNATE_REGISTER reg, bit
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.macro WRITE_ALTERNATE_REGISTER reg, bit
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	save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp
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	rdpr %pstate, %l0
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	wrpr %l0, \bit, %pstate
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	wrpr %g0, (\bit | PSTATE_PRIV_BIT), %pstate
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	mov %i0, \reg
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	mov %o0, \reg
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	wrpr %l0, 0, %pstate
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	ret
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	retl
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	restore
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	wrpr %g0, PSTATE_PRIV_BIT, %pstate
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.endm
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.endm
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.macro READ_ALTERNATE_REGISTER reg, bit
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.macro READ_ALTERNATE_REGISTER reg, bit
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	save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp
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	rdpr %pstate, %l0
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	wrpr %l0, \bit, %pstate
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	wrpr %g0, (\bit | PSTATE_PRIV_BIT), %pstate
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	mov \reg, %i0
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	mov \reg, %o0
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	wrpr %l0, 0, %pstate
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	ret
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	retl
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	restore
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	wrpr %g0, PSTATE_PRIV_BIT, %pstate
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.endm
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.endm
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.global write_to_ag_g6
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.global write_to_ag_g6
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write_to_ag_g6:
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write_to_ag_g6:
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	WRITE_ALTERNATE_REGISTER %g6, PSTATE_AG_BIT
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	WRITE_ALTERNATE_REGISTER %g6, PSTATE_AG_BIT
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	 * Spills and fills will be handled by the userspace handlers.
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	 * Spills and fills will be handled by the userspace handlers.
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	 */
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	 */
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	wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(1), %wstate
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	wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(1), %wstate
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	done				! jump to userspace
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	done				! jump to userspace
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