[pcsx_rearmed.git] / plugins / gpu_senquack / gpu_arm.S

/*
 * (C) Gražvydas "notaz" Ignotas, 2011
 *
 * This work is licensed under the terms of  GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 */

#include "arm_features.h"

.text
.align 2

@ in: r0=dst, r2=pal, r12=0x1e
@ trashes r6-r8,lr,flags
.macro do_4_pixels rs ibase obase
.if \ibase - 1 < 0
    and     r6, r12, \rs, lsl #1
.else
    and     r6, r12, \rs, lsr #\ibase-1
.endif
    and     r7, r12, \rs, lsr #\ibase+3
    and     r8, r12, \rs, lsr #\ibase+7
    and     lr, r12, \rs, lsr #\ibase+11
    ldrh    r6, [r2, r6]
    ldrh    r7, [r2, r7]
    ldrh    r8, [r2, r8]
    ldrh    lr, [r2, lr]
    tst     r6, r6
    strneh  r6, [r0, #\obase+0]
    tst     r7, r7
    strneh  r7, [r0, #\obase+2]
    tst     r8, r8
    strneh  r8, [r0, #\obase+4]
    tst     lr, lr
    strneh  lr, [r0, #\obase+6]
.endm

.global draw_spr16_full @ (u16 *d, void *s, u16 *pal, int lines)
draw_spr16_full:
    stmfd   sp!, {r4-r8,lr}
    mov     r12, #0x1e             @ empty pixel

0:
    ldmia   r1, {r4,r5}
    do_4_pixels r4, 0,  0
    do_4_pixels r4, 16, 8
    do_4_pixels r5, 0,  16
    do_4_pixels r5, 16, 24
    subs    r3, r3, #1
    add     r0, r0, #2048
    add     r1, r1, #2048
    bgt     0b

    ldmfd   sp!, {r4-r8,pc}

@ vim:filetype=armasm
Commit	Line	Data
0bfe8d59	1	/*
	2	* (C) Gražvydas "notaz" Ignotas, 2011
	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	@ in: r0=dst, r2=pal, r12=0x1e
	14	@ trashes r6-r8,lr,flags
	15	.macro do_4_pixels rs ibase obase
	16	.if \ibase - 1 < 0
	17	and r6, r12, \rs, lsl #1
	18	.else
	19	and r6, r12, \rs, lsr #\ibase-1
	20	.endif
	21	and r7, r12, \rs, lsr #\ibase+3
	22	and r8, r12, \rs, lsr #\ibase+7
	23	and lr, r12, \rs, lsr #\ibase+11
	24	ldrh r6, [r2, r6]
	25	ldrh r7, [r2, r7]
	26	ldrh r8, [r2, r8]
	27	ldrh lr, [r2, lr]
	28	tst r6, r6
	29	strneh r6, [r0, #\obase+0]
	30	tst r7, r7
	31	strneh r7, [r0, #\obase+2]
	32	tst r8, r8
	33	strneh r8, [r0, #\obase+4]
	34	tst lr, lr
	35	strneh lr, [r0, #\obase+6]
	36	.endm
	37
	38	.global draw_spr16_full @ (u16 d, void s, u16 *pal, int lines)
	39	draw_spr16_full:
	40	stmfd sp!, {r4-r8,lr}
	41	mov r12, #0x1e @ empty pixel
	42
	43	0:
	44	ldmia r1, {r4,r5}
	45	do_4_pixels r4, 0, 0
	46	do_4_pixels r4, 16, 8
	47	do_4_pixels r5, 0, 16
	48	do_4_pixels r5, 16, 24
	49	subs r3, r3, #1
	50	add r0, r0, #2048
	51	add r1, r1, #2048
	52	bgt 0b
	53
	54	ldmfd sp!, {r4-r8,pc}
	55
	56	@ vim:filetype=armasm