alpha/lib/memmove.S

1 /* SPDX-License-Identifier: GPL-2.0 */
7  * This is hand-massaged output from the original memcpy.c.  We defer to
15 	.align 4
22 	.prologue 1
24 	addq $16,$18,$4
26 	cmpule $4,$17,$1		/*  dest + n <= src  */
29 	bis $1,$2,$1
32 	bne $1,memcpy			!samegp
34 	and $2,7,$2			/* Test for src/dest co-alignment.  */
35 	and $16,7,$1
39 	and $4,7,$1
42 	beq $1,$skip_aligned_byte_loop_head_dn
45 	lda $4,-1($4)
46 	lda $5,-1($5)
51 	ldq_u $2,0($4)
52 	lda $18,-1($18)
53 	extbl $3,$5,$1
55 	insbl $1,$4,$1
56 	mskbl $2,$4,$2
57 	bis $1,$2,$1
58 	and $4,7,$6
60 	stq_u $1,0($4)
64 	lda $18,-8($18)
68 	ldq $1,-8($5)
70 	lda $5,-8($5)
71 	lda $18,-8($18)
73 	stq $1,-8($4)
75 	lda $4,-8($4)
82 	ret $31,($26),1
84 	.align 4
92 	ldq_u $3,-1($5)
93 	ldq_u $2,-1($4)
94 	lda $5,-1($5)
95 	lda $4,-1($4)
97 	lda $18,-1($18)
98 	extbl $3,$5,$1
99 	insbl $1,$4,$1
100 	mskbl $2,$4,$2
102 	bis $1,$2,$1
103 	stq_u $1,0($4)
108 	mov $16,$4
111 	beq $1,$skip_aligned_byte_loop_head_up
117 	ldq_u $2,0($4)
119 	lda $18,-1($18)
120 	extbl $3,$5,$1
121 	insbl $1,$4,$1
122 	mskbl $2,$4,$2
124 	bis $1,$2,$1
125 	lda $5,1($5)
126 	stq_u $1,0($4)
127 	lda $4,1($4)
129 	and $4,7,$6
133 	lda $18,-8($18)
137 	ldq $1,0($5)
140 	lda $18,-8($18)
142 	stq $1,0($4)
144 	lda $4,8($4)
151 	ret $31,($26),1
153 	.align 4
162 	ldq_u $2,0($4)
163 	lda $18,-1($18)
164 	extbl $3,$5,$1
166 	insbl $1,$4,$1
167 	mskbl $2,$4,$2
168 	bis $1,$2,$1
169 	stq_u $1,0($4)
171 	lda $5,1($5)
172 	lda $4,1($4)
177 	ret $31,($26),1