[linux-2.6-block.git] / arch / sparc / kernel / utrap.S

	.globl		utrap_trap
	.type		utrap_trap,#function
utrap_trap:		/* %g3=handler,%g4=level */
	TRAP_LOAD_THREAD_REG(%g6, %g1)
	ldx		[%g6 + TI_UTRAPS], %g1
	brnz,pt		%g1, invoke_utrap
	 nop

	ba,pt		%xcc, etrap
	 rd		%pc, %g7
	mov		%l4, %o1
        call		bad_trap
	 add		%sp, PTREGS_OFF, %o0
	ba,a,pt		%xcc, rtrap

invoke_utrap:
	sllx		%g3, 3, %g3
	ldx		[%g1 + %g3], %g1
	save		%sp, -128, %sp
	rdpr		%tstate, %l6
	rdpr		%cwp, %l7
	andn		%l6, TSTATE_CWP, %l6
	wrpr		%l6, %l7, %tstate
	rdpr		%tpc, %l6
	rdpr		%tnpc, %l7
	wrpr		%g1, 0, %tnpc
	done
	.size		utrap_trap,.-utrap_trap
Commit	Line	Data
6eda3a75 DM	1	.globl utrap_trap
	2	.type utrap_trap,#function
	3	utrap_trap: /* %g3=handler,%g4=level */
	4	TRAP_LOAD_THREAD_REG(%g6, %g1)
	5	ldx [%g6 + TI_UTRAPS], %g1
	6	brnz,pt %g1, invoke_utrap
	7	nop
	8
	9	ba,pt %xcc, etrap
	10	rd %pc, %g7
	11	mov %l4, %o1
	12	call bad_trap
	13	add %sp, PTREGS_OFF, %o0
49fa5230	14	ba,a,pt %xcc, rtrap
6eda3a75 DM	15
	16	invoke_utrap:
	17	sllx %g3, 3, %g3
	18	ldx [%g1 + %g3], %g1
	19	save %sp, -128, %sp
	20	rdpr %tstate, %l6
	21	rdpr %cwp, %l7
	22	andn %l6, TSTATE_CWP, %l6
	23	wrpr %l6, %l7, %tstate
	24	rdpr %tpc, %l6
	25	rdpr %tnpc, %l7
	26	wrpr %g1, 0, %tnpc
	27	done
	28	.size utrap_trap,.-utrap_trap