1/* SPDX-License-Identifier: GPL-2.0 */
 2/* Cloned and hacked for uClibc by Paul Mundt, December 2003 */
 3/* Modified by SuperH, Inc. September 2003 */
 4! Entry: arg0: destination
 5!        arg1: source
 6! Exit:  result: destination
 7!
 8! SH5 code Copyright 2002 SuperH Ltd.
 9
10#if __BYTE_ORDER == __LITTLE_ENDIAN
11#define SHHI shlld
12#define SHLO shlrd
13#else
14#define SHHI shlrd
15#define SHLO shlld
16#endif
17
18	.section .text..SHmedia32,"ax"
19	.globl	strcpy
20	.type	strcpy, @function
21	.align 5
22
23strcpy:
24
25	pta/l shortstring,tr1
26	ldlo.q r3,0,r4
27	ptabs r18,tr4
28	shlli r3,3,r7
29	addi r2, 8, r0
30	mcmpeq.b r4,r63,r6
31	SHHI r6,r7,r6
32	bnei/u r6,0,tr1 // shortstring
33	pta/l no_lddst, tr2
34	ori r3,-8,r23
35	sub r2, r23, r0
36	sub r3, r2, r21
37	addi r21, 8, r20
38	ldx.q r0, r21, r5
39	pta/l loop, tr0
40	ori r2,-8,r22
41	mcmpeq.b r5, r63, r6
42	bgt/u r22, r23, tr2 // no_lddst
43
44	// r22 < r23 :  Need to do a load from the destination.
45	// r22 == r23 : Doesn't actually need to load from destination,
46	//              but still can be handled here.
47	ldlo.q r2, 0, r9
48	movi -1, r8
49	SHLO r8, r7, r8
50	mcmv r4, r8, r9
51	stlo.q r2, 0, r9
52	beqi/l r6, 0, tr0 // loop
53
54	add r5, r63, r4
55	addi r0, 8, r0
56	blink tr1, r63 // shortstring
57no_lddst:
58	// r22 > r23: note that for r22 == r23 the sthi.q would clobber
59	//            bytes before the destination region.
60	stlo.q r2, 0, r4
61	SHHI r4, r7, r4
62	sthi.q r0, -1, r4
63	beqi/l r6, 0, tr0 // loop
64
65	add r5, r63, r4
66	addi r0, 8, r0
67shortstring:
68#if __BYTE_ORDER != __LITTLE_ENDIAN
69	pta/l shortstring2,tr1
70	byterev r4,r4
71#endif
72shortstring2:
73	st.b r0,-8,r4
74	andi r4,0xff,r5
75	shlri r4,8,r4
76	addi r0,1,r0
77	bnei/l r5,0,tr1
78	blink tr4,r63 // return
79	
80	.balign 8
81loop:
82	stlo.q r0, 0, r5
83	ldx.q r0, r20, r4
84	addi r0, 16, r0
85	sthi.q r0, -9, r5
86	mcmpeq.b r4, r63, r6
87	bnei/u r6, 0, tr1 // shortstring
88	ldx.q r0, r21, r5
89	stlo.q r0, -8, r4
90	sthi.q r0, -1, r4
91	mcmpeq.b r5, r63, r6
92	beqi/l r6, 0, tr0 // loop
93
94	add r5, r63, r4
95	addi r0, 8, r0
96	blink tr1, r63 // shortstring
97
98	.size	strcpy,.-strcpy

 
 1/* Cloned and hacked for uClibc by Paul Mundt, December 2003 */
 2/* Modified by SuperH, Inc. September 2003 */
 3! Entry: arg0: destination
 4!        arg1: source
 5! Exit:  result: destination
 6!
 7! SH5 code Copyright 2002 SuperH Ltd.
 8
 9#if __BYTE_ORDER == __LITTLE_ENDIAN
10#define SHHI shlld
11#define SHLO shlrd
12#else
13#define SHHI shlrd
14#define SHLO shlld
15#endif
16
17	.section .text..SHmedia32,"ax"
18	.globl	strcpy
19	.type	strcpy, @function
20	.align 5
21
22strcpy:
23
24	pta/l shortstring,tr1
25	ldlo.q r3,0,r4
26	ptabs r18,tr4
27	shlli r3,3,r7
28	addi r2, 8, r0
29	mcmpeq.b r4,r63,r6
30	SHHI r6,r7,r6
31	bnei/u r6,0,tr1 // shortstring
32	pta/l no_lddst, tr2
33	ori r3,-8,r23
34	sub r2, r23, r0
35	sub r3, r2, r21
36	addi r21, 8, r20
37	ldx.q r0, r21, r5
38	pta/l loop, tr0
39	ori r2,-8,r22
40	mcmpeq.b r5, r63, r6
41	bgt/u r22, r23, tr2 // no_lddst
42
43	// r22 < r23 :  Need to do a load from the destination.
44	// r22 == r23 : Doesn't actually need to load from destination,
45	//              but still can be handled here.
46	ldlo.q r2, 0, r9
47	movi -1, r8
48	SHLO r8, r7, r8
49	mcmv r4, r8, r9
50	stlo.q r2, 0, r9
51	beqi/l r6, 0, tr0 // loop
52
53	add r5, r63, r4
54	addi r0, 8, r0
55	blink tr1, r63 // shortstring
56no_lddst:
57	// r22 > r23: note that for r22 == r23 the sthi.q would clobber
58	//            bytes before the destination region.
59	stlo.q r2, 0, r4
60	SHHI r4, r7, r4
61	sthi.q r0, -1, r4
62	beqi/l r6, 0, tr0 // loop
63
64	add r5, r63, r4
65	addi r0, 8, r0
66shortstring:
67#if __BYTE_ORDER != __LITTLE_ENDIAN
68	pta/l shortstring2,tr1
69	byterev r4,r4
70#endif
71shortstring2:
72	st.b r0,-8,r4
73	andi r4,0xff,r5
74	shlri r4,8,r4
75	addi r0,1,r0
76	bnei/l r5,0,tr1
77	blink tr4,r63 // return
78	
79	.balign 8
80loop:
81	stlo.q r0, 0, r5
82	ldx.q r0, r20, r4
83	addi r0, 16, r0
84	sthi.q r0, -9, r5
85	mcmpeq.b r4, r63, r6
86	bnei/u r6, 0, tr1 // shortstring
87	ldx.q r0, r21, r5
88	stlo.q r0, -8, r4
89	sthi.q r0, -1, r4
90	mcmpeq.b r5, r63, r6
91	beqi/l r6, 0, tr0 // loop
92
93	add r5, r63, r4
94	addi r0, 8, r0
95	blink tr1, r63 // shortstring
96
97	.size	strcpy,.-strcpy