(ctr/3ds) fix 3dsx build.
[pcsx_rearmed.git] / frontend / cspace_arm.S
CommitLineData
d57557c0 1/*
2 * (C) GraÅžvydas "notaz" Ignotas, 2013
3 *
4 * This work is licensed under the terms of GNU GPL version 2 or later.
5 * See the COPYING file in the top-level directory.
6 */
7
8#include "arm_features.h"
9
10.text
11.align 2
12
13@ lr=0x001f001f
14@ trashes r11, r12
15.macro bgr555_to_rgb565_one rn
16 and r11, lr, \rn
17 and r12, lr, \rn, lsr #5
18 and \rn, lr, \rn, lsr #10
19 orr r12, r11, lsl #5
20 orr \rn, r12, lsl #6
21.endm
22
23.macro pld_ reg offs=#0
24#ifdef HAVE_ARMV6
25 pld [\reg, \offs]
26#endif
27.endm
28
5c6457c3 29FUNCTION(bgr555_to_rgb565): @ void *dst, const void *src, int bytes
d57557c0 30 pld_ r1
31 push {r4-r11,lr}
32 mov lr, #0x001f
33 subs r2, #4*8
34 orr lr, lr, lsl #16
35 blt 1f
36
370:
38 ldmia r1!, {r3-r10}
39 subs r2, #4*8
40 bgr555_to_rgb565_one r3
41
42 pld_ r1, #32*2
43 bgr555_to_rgb565_one r4
44 bgr555_to_rgb565_one r5
45 bgr555_to_rgb565_one r6
46 bgr555_to_rgb565_one r7
47 bgr555_to_rgb565_one r8
48 bgr555_to_rgb565_one r9
49 bgr555_to_rgb565_one r10
50 stmia r0!, {r3-r10}
51 bge 0b
52
531:
54 adds r2, #4*8
55 popeq {r4-r11,pc}
56
572:
58 ldr r3, [r1], #4
59 subs r2, #4
60 bgr555_to_rgb565_one r3
61 str r3, [r0], #4
62 bgt 2b
63
64 pop {r4-r11,pc}