59 #define ADDC(sum,reg)						\  argument
62 	ADD	sum, reg;					\
63 	sltu	v1, sum, reg;					\
64 	ADD	sum, v1;					\
67 #define ADDC32(sum,reg)						\  argument
70 	addu	sum, reg;					\
71 	sltu	v1, sum, reg;					\
72 	addu	sum, v1;					\
75 #define CSUM_BIGCHUNK1(src, offset, sum, _t0, _t1, _t2, _t3)	\  argument
82 	ADDC(sum, _t0);						\
83 	ADDC(sum, _t2)
86 #define CSUM_BIGCHUNK(src, offset, sum, _t0, _t1, _t2, _t3)	\  argument
87 	CSUM_BIGCHUNK1(src, offset, sum, _t0, _t1, _t2, _t3)
89 #define CSUM_BIGCHUNK(src, offset, sum, _t0, _t1, _t2, _t3)	\  argument
90 	CSUM_BIGCHUNK1(src, offset, sum, _t0, _t1, _t2, _t3);	\
91 	CSUM_BIGCHUNK1(src, offset + 0x10, sum, _t0, _t1, _t2, _t3)
101 #define sum v0  macro
108 	move	sum, zero
126 	ADDC(sum, t0)
136 	ADDC(sum, t0)
150 	ADDC(sum, t0)
161 	ADDC(sum, t0)
166 	ADDC(sum, t0)
167 	ADDC(sum, t1)
179 	ADDC(sum, t0)
180 	ADDC(sum, t1)
182 	CSUM_BIGCHUNK1(src, 0x00, sum, t0, t1, t3, t4)
193 	CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4)
194 	CSUM_BIGCHUNK(src, 0x20, sum, t0, t1, t3, t4)
195 	CSUM_BIGCHUNK(src, 0x40, sum, t0, t1, t3, t4)
196 	CSUM_BIGCHUNK(src, 0x60, sum, t0, t1, t3, t4)
208 	CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4)
209 	CSUM_BIGCHUNK(src, 0x20, sum, t0, t1, t3, t4)
217 	CSUM_BIGCHUNK(src, 0x00, sum, t0, t1, t3, t4)
229 	ADDC(sum, t0)
249 	ADDC(sum, t1)
270 1:	ADDC(sum, t1)
274 	dsll32	v1, sum, 0
275 	daddu	sum, v1
276 	sltu	v1, sum, v1
277 	dsra32	sum, sum, 0
278 	addu	sum, v1
286 	wsbh	v1, sum
287 	movn	sum, v1, t7
293 	and	t0, sum, v1
295 	srl	sum, sum, 8
296 	and	sum, sum, v1
297 	or	sum, sum, t0
302 	ADDC32(sum, a2)
321 #define sum v0  macro
440 	li	sum, -1
485 	ADDC(sum, t0)
489 	ADDC(sum, t2)
493 	ADDC(sum, t4)
497 	ADDC(sum, t6)
525 	ADDC(sum, t0)
529 	ADDC(sum, t2)
545 	ADDC(sum, t0)
573 	ADDC(sum, t0)
596 	ADDC(sum, t3)
630 	ADDC(sum, t0)
634 	ADDC(sum, t2)
651 	ADDC(sum, t0)
694 	ADDC(sum, t2)
700 	dsll32	v1, sum, 0
701 	daddu	sum, v1
702 	sltu	v1, sum, v1
703 	dsra32	sum, sum, 0
704 	addu	sum, v1
711 	wsbh	v1, sum
712 	movn	sum, v1, odd
718 	and	t0, sum, v1
720 	srl	sum, sum, 8
721 	and	sum, sum, v1
722 	or	sum, sum, t0