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@
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@    Copyright 2010 TheSeven
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@    This file is part of emCORE.
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@
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@    emCORE is free software: you can redistribute it and/or
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@    modify it under the terms of the GNU General Public License as
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@    published by the Free Software Foundation, either version 2 of the
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@    License, or (at your option) any later version.
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@
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@    emCORE is distributed in the hope that it will be useful,
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@    but WITHOUT ANY WARRANTY; without even the implied warranty of
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@    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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@    See the GNU General Public License for more details.
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@
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@    You should have received a copy of the GNU General Public License
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@    along with emCORE.  If not, see <http://www.gnu.org/licenses/>.
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@
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@
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#define ASM_FILE
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#include "global.h"
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.section .icode.rendertext, "ax", %progbits
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.align 2
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.global rendertext
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.type rendertext, %function
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rendertext:
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	stmfd	sp!, {r0-r2,r4,r5,lr}
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	ldr	r4, [sp,#0x18]
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	str	r4, [sp,#-4]!
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	mov	r4, r3
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	mov	r5, #6 * LCD_BYTESPERPIXEL
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rendertext_loop:
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	ldrb	r3, [r4], #1
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	cmp	r3, #0
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	beq	rendertext_done
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	bl	renderchar
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	ldmed	sp, {r0-r2}
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	add	r0, r0, r5
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	str	r0, [sp,#4]
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	b	rendertext_loop
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rendertext_done:
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	ldmfd	sp!, {r0-r5,pc}
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.size rendertext, .-rendertext
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#if (LCD_BYTESPERPIXEL == 2)
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.section .icode.renderchar, "ax", %progbits
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.align 2
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.global renderchar
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.type renderchar, %function
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renderchar:
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	stmfd	sp!, {r4-r7,lr}
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	ldr	r7, [sp,#0x14]
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	cmn	r2, #1
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	beq	renderchar_nobg
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	mov	r6, r0
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	mov	r4, #8
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	mov	lr, r2,lsr#16
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	sub	lr, lr, #0xff00
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	subs	lr, lr, #0xff
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	bne	renderchar_opaquerow
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	mov	r12, r2,lsl#16
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	mov	r12, r12,lsr#16
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renderchar_blendrow:
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	mov	r5, #6
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renderchar_blendcol:
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	ldrh	lr, [r6]
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	tst	lr, #1
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	orrne	lr, lr, #0x10000
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	mov	lr, lr,lsr#1
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	bic	lr, lr, #0x1000
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	bic	lr, lr, #0x84
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	add	lr, lr, r12
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	strh	lr, [r6], #2
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	subs	r5, r5, #1
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	bne	renderchar_blendcol
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	add	r6, r6, r7,lsl#1
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	sub	r6, r6, #12
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	subs	r4, r4, #1
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	bne	renderchar_blendrow
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	b	renderchar_nobg
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renderchar_opaquerow:
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	mov	r5, #6
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renderchar_opaquecol:
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	strh	r2, [r6], #2
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	subs	r5, r5, #1
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	bne	renderchar_opaquecol
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	add	r6, r6, r7,lsl#1
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	sub	r6, r6, #12
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	subs	r4, r4, #1
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	bne	renderchar_opaquerow
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renderchar_nobg:
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	adr	r5, renderchar_font
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	sub	r3, r3, #0x20
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	cmp	r3, #0x5f
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	addcc	r5, r3,lsl#2
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	addcc	r5, r3
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	mov	r3, #5
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renderchar_col:
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	mov	r6, r0
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	ldrb	r4, [r5], #1
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renderchar_row:
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	tst	r4, #1
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	strneh	r1, [r6]
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	add	r6, r6, r7,lsl#1
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	movs	r4, r4,lsr#1
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	bne	renderchar_row
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	add	r0, r0, #2
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	subs	r3, r3, #1
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	bne	renderchar_col
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	add	r0, r0, #2
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	ldmfd	sp!, {r4-r7,pc}
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renderchar_font:
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	.byte 0, 0, 0, 0, 0
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	.byte 0, 0, 95, 0, 0
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	.byte 0, 7, 0, 7, 0
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	.byte 20, 127, 20, 127, 20
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	.byte 36, 42, 127, 42, 18
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	.byte 35, 19, 8, 100, 98
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	.byte 54, 73, 85, 34, 80
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	.byte 5, 3, 0, 0, 0
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	.byte 28, 34, 65, 0, 0
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	.byte 0, 0, 65, 34, 28
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	.byte 20, 8, 62, 8, 20
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	.byte 8, 8, 62, 8, 8
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	.byte 0, -96, 96, 0, 0
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	.byte 8, 8, 8, 8, 8
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	.byte 0, 96, 96, 0, 0
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	.byte 32, 16, 8, 4, 2
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	.byte 62, 81, 73, 69, 62
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	.byte 0, 66, 127, 64, 0
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	.byte 66, 97, 81, 73, 70
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	.byte 33, 65, 69, 75, 49
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	.byte 24, 20, 18, 127, 16
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	.byte 39, 69, 69, 69, 57
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	.byte 60, 74, 73, 73, 48
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	.byte 1, 113, 9, 5, 3
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	.byte 54, 73, 73, 73, 54
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	.byte 6, 73, 73, 41, 30
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	.byte 0, 54, 54, 0, 0
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	.byte 0, 86, 54, 0, 0
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	.byte 8, 20, 34, 65, 0
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	.byte 20, 20, 20, 20, 20
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	.byte 0, 65, 34, 20, 8
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	.byte 2, 1, 81, 9, 6
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	.byte 50, 73, 121, 65, 62
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	.byte 124, 18, 17, 18, 124
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	.byte 127, 73, 73, 73, 62
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	.byte 62, 65, 65, 65, 34
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	.byte 127, 65, 65, 34, 28
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	.byte 127, 73, 73, 73, 65
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	.byte 127, 9, 9, 9, 1
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	.byte 62, 65, 73, 73, 58
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	.byte 127, 8, 8, 8, 127
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	.byte 0, 65, 127, 65, 0
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	.byte 32, 64, 65, 63, 1
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	.byte 127, 8, 20, 34, 65
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	.byte 127, 64, 64, 64, 64
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	.byte 127, 2, 12, 2, 127
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	.byte 127, 4, 8, 16, 127
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	.byte 62, 65, 65, 65, 62
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	.byte 127, 9, 9, 9, 6
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	.byte 62, 65, 81, 33, 94
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	.byte 127, 9, 25, 41, 70
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	.byte 38, 73, 73, 73, 50
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	.byte 1, 1, 127, 1, 1
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	.byte 63, 64, 64, 64, 63
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	.byte 31, 32, 64, 32, 31
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	.byte 127, 32, 24, 32, 127
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	.byte 99, 20, 8, 20, 99
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	.byte 3, 4, 120, 4, 3
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	.byte 97, 81, 73, 69, 67
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	.byte 0, 127, 65, 65, 0
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	.byte 2, 4, 8, 16, 32
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	.byte 0, 65, 65, 127, 0
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	.byte 4, 2, 1, 2, 4
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	.byte 64, 64, 64, 64, 64
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	.byte 1, 2, 4, 0, 0
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	.byte 32, 84, 84, 84, 120
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	.byte 127, 68, 68, 68, 56
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	.byte 56, 68, 68, 68, 40
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	.byte 56, 68, 68, 68, 127
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	.byte 56, 84, 84, 84, 24
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	.byte 8, 126, 9, 1, 2
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	.byte 8, 84, 84, 84, 60
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	.byte 127, 4, 4, 4, 120
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	.byte 0, 68, 125, 64, 0
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	.byte 32, 64, 64, 61, 0
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	.byte 127, 16, 40, 68, 0
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	.byte 0, 65, 127, 64, 0
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	.byte 124, 4, 24, 4, 120
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	.byte 124, 8, 4, 4, 120
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	.byte 56, 68, 68, 68, 56
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	.byte 124, 20, 20, 20, 24
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	.byte 8, 20, 20, 20, 124
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	.byte 124, 8, 4, 4, 8
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	.byte 72, 84, 84, 84, 32
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	.byte 4, 63, 68, 64, 32
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	.byte 60, 64, 64, 32, 124
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	.byte 28, 32, 64, 32, 28
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	.byte 60, 64, 56, 64, 60
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	.byte 68, 40, 16, 40, 68
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	.byte 12, 80, 80, 80, 60
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	.byte 68, 100, 84, 76, 68
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	.byte 0, 8, 54, 65, 0
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	.byte 0, 0, 119, 0, 0
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	.byte 0, 65, 54, 8, 0
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	.byte 2, 1, 2, 4, 2
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.align 2
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.size renderchar, .-renderchar
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#else
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#error Unknown number of bytes per pixel!
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#endif