Lines Matching +full:left +full:- +full:aligned

2 #include <asm-generic/export.h>
4 #include <asm/asm-extable.h>
25 	 * a0 - start of uncopied dst
26 	 * a1 - start of uncopied src
27 	 * a2 - size
28 	 * t0 - end of uncopied dst
40 	 * Copy first bytes until dst is aligned to word boundary.
41 	 * a0 - start of dst
42 	 * t1 - start of aligned dst
44 	addi	t1, a0, SZREG-1
45 	andi	t1, t1, ~(SZREG-1)
46 	/* dst is already aligned, skip */
49 	/* a5 - one byte for copying data */
54 	bltu	a0, t1, 1b	/* t1 - start of aligned dst */
58 	 * Now dst is aligned.
59 	 * Use shift-copy if src is misaligned.
60 	 * Use word-copy if both src and dst are aligned because
61 	 * can not use shift-copy which do not require shifting
63 	/* a1 - start of src */
64 	andi	a3, a1, SZREG-1
69 	 * Both src and dst are aligned, unrolled word copy
71 	 * a0 - start of aligned dst
72 	 * a1 - start of aligned src
73 	 * t0 - end of aligned dst
75 	addi	t0, t0, -(8*SZREG) /* not to over run */
104 	 * For misaligned copy we still perform aligned word copy, but
109 	 * a0 - start of aligned dst
110 	 * a1 - start of src
111 	 * a3 - a1 & mask:(SZREG-1)
112 	 * t0 - end of uncopied dst
113 	 * t1 - end of aligned dst
115 	/* calculating aligned word boundary for dst */
116 	andi	t1, t0, ~(SZREG-1)
117 	/* Converting unaligned src to aligned src */
118 	andi	a1, a1, ~(SZREG-1)
122 	 * t3 - prev shift
123 	 * t4 - current shift
135 	 * a0 - start of aligned dst
136 	 * a1 - start of aligned src
137 	 * t1 - end of aligned dst
155 	 * Byte copy anything left.
157 	 * a0 - start of remaining dst
158 	 * a1 - start of remaining src
159 	 * t0 - end of remaining dst
167 	bltu	a0, t0, 4b	/* t0 - end of dst */
194 	addi t0, a0, SZREG-1
195 	andi t1, a3, ~(SZREG-1)
196 	andi t0, t0, ~(SZREG-1)
199 	 * t0: lowest doubleword-aligned address in target region
200 	 * t1: highest doubleword-aligned address in target region