[mirror_ubuntu-bionic-kernel.git] / arch / metag / kernel / tbiunexp.S

/* SPDX-License-Identifier: GPL-2.0 */
/* Pass a breakpoint through to Codescape */

#include <asm/tbx.h>

	.text
        .global	___TBIUnExpXXX
        .type   ___TBIUnExpXXX,function
___TBIUnExpXXX:
	TSTT	D0Ar2,#TBICTX_CRIT_BIT	! Result of nestable int call?
	BZ	$LTBINormCase		! UnExpXXX at background level
	MOV	D0Re0,TXMASKI		! Read TXMASKI
	XOR	TXMASKI,D1Re0,D1Re0	! Turn off BGNDHALT handling!
	OR	D0Ar2,D0Ar2,D0Re0	! Preserve bits cleared
$LTBINormCase:
	MSETL 	[A0StP],D0Ar6,D0Ar4,D0Ar2	! Save args on stack
	SETL 	[A0StP++],D0Ar2,D1Ar1	! Init area for returned values
	SWITCH 	#0xC20208		! Total stack frame size 8 Dwords
					!            write back size 2 Dwords
	GETL 	D0Re0,D1Re0,[--A0StP]	! Get result
	SUB 	A0StP,A0StP,#(8*3)	! Recover stack frame
	MOV 	PC,D1RtP
        .size   	___TBIUnExpXXX,.-___TBIUnExpXXX
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
ac919f08 JH	2	/* Pass a breakpoint through to Codescape */
	3
	4	#include <asm/tbx.h>
	5
	6	.text
	7	.global ___TBIUnExpXXX
	8	.type ___TBIUnExpXXX,function
	9	___TBIUnExpXXX:
	10	TSTT D0Ar2,#TBICTX_CRIT_BIT ! Result of nestable int call?
	11	BZ $LTBINormCase ! UnExpXXX at background level
	12	MOV D0Re0,TXMASKI ! Read TXMASKI
	13	XOR TXMASKI,D1Re0,D1Re0 ! Turn off BGNDHALT handling!
	14	OR D0Ar2,D0Ar2,D0Re0 ! Preserve bits cleared
	15	$LTBINormCase:
	16	MSETL [A0StP],D0Ar6,D0Ar4,D0Ar2 ! Save args on stack
	17	SETL [A0StP++],D0Ar2,D1Ar1 ! Init area for returned values
	18	SWITCH #0xC20208 ! Total stack frame size 8 Dwords
	19	! write back size 2 Dwords
	20	GETL D0Re0,D1Re0,[--A0StP] ! Get result
	21	SUB A0StP,A0StP,#(8*3) ! Recover stack frame
	22	MOV PC,D1RtP
	23	.size ___TBIUnExpXXX,.-___TBIUnExpXXX