[deliverable/linux.git] / arch / blackfin / lib / umodsi3.S

/*
 * libgcc1 routines for Blackfin 5xx
 *
 * Copyright 2004-2009 Analog Devices Inc.
 *
 * Licensed under the Clear BSD license or the GPL-2 (or later)
 */

#ifdef CONFIG_ARITHMETIC_OPS_L1
.section .l1.text
#else
.text
#endif

.extern ___udivsi3;
.type ___udivsi3, STT_FUNC;
.globl	___umodsi3
.type ___umodsi3, STT_FUNC;
___umodsi3:

	CC=R0==0;
	IF CC JUMP .LRETURN_R0;		/* Return 0, if NR == 0 */
	CC= R1==0;
	IF CC JUMP .LRETURN_ZERO_VAL;	/* Return 0, if DR == 0 */
	CC=R0==R1;
	IF CC JUMP .LRETURN_ZERO_VAL;	/* Return 0, if NR == DR */
	CC = R1 == 1;
	IF CC JUMP .LRETURN_ZERO_VAL;	/* Return 0, if  DR == 1 */
	CC = R0<R1 (IU);
	IF CC JUMP .LRETURN_R0;		/* Return dividend (R0),IF NR<DR */

	[--SP] = (R7:6);		/* Push registers and */
	[--SP] = RETS;			/* Return address */
	R7 = R0;			/* Copy of R0 */
	R6 = R1;
	SP += -12;			/* Should always provide this space */
	CALL ___udivsi3;		/* Compute unsigned quotient using ___udiv32()*/
	SP += 12;
	R0 *= R6;			/* Quotient * divisor */
	R0 = R7 - R0;			/* Dividend - (quotient * divisor) */
	RETS = [SP++];			/* Pop return address */
	( R7:6) = [SP++];		/* And registers */
	RTS;				/* Return remainder */
.LRETURN_ZERO_VAL:
	R0 = 0;
.LRETURN_R0:
	RTS;

.size ___umodsi3, .-___umodsi3
Commit	Line	Data
1394f032	1	/*
96f1050d	2	* libgcc1 routines for Blackfin 5xx
1394f032	3	*
96f1050d	4	* Copyright 2004-2009 Analog Devices Inc.
1394f032	5	*
de450838	6	* Licensed under the Clear BSD license or the GPL-2 (or later)
1394f032 BW	7	*/
	8
	9	#ifdef CONFIG_ARITHMETIC_OPS_L1
	10	.section .l1.text
	11	#else
	12	.text
	13	#endif
	14
	15	.extern ___udivsi3;
51be24c3	16	.type ___udivsi3, STT_FUNC;
1394f032	17	.globl ___umodsi3
51be24c3	18	.type ___umodsi3, STT_FUNC;
1394f032 BW	19	___umodsi3:
	20
	21	CC=R0==0;
	22	IF CC JUMP .LRETURN_R0; /* Return 0, if NR == 0 */
	23	CC= R1==0;
	24	IF CC JUMP .LRETURN_ZERO_VAL; /* Return 0, if DR == 0 */
	25	CC=R0==R1;
	26	IF CC JUMP .LRETURN_ZERO_VAL; /* Return 0, if NR == DR */
	27	CC = R1 == 1;
	28	IF CC JUMP .LRETURN_ZERO_VAL; /* Return 0, if DR == 1 */
	29	CC = R0<R1 (IU);
	30	IF CC JUMP .LRETURN_R0; /* Return dividend (R0),IF NR<DR */
	31
	32	[--SP] = (R7:6); /* Push registers and */
	33	[--SP] = RETS; /* Return address */
	34	R7 = R0; /* Copy of R0 */
	35	R6 = R1;
	36	SP += -12; /* Should always provide this space */
	37	CALL ___udivsi3; /* Compute unsigned quotient using ___udiv32()*/
	38	SP += 12;
	39	R0 = R6; / Quotient * divisor */
	40	R0 = R7 - R0; /* Dividend - (quotient * divisor) */
	41	RETS = [SP++]; /* Pop return address */
	42	( R7:6) = [SP++]; /* And registers */
	43	RTS; /* Return remainder */
	44	.LRETURN_ZERO_VAL:
	45	R0 = 0;
	46	.LRETURN_R0:
	47	RTS;
51be24c3 MF	48
51be24c3 MF	49	.size ___umodsi3, .-___umodsi3