150 lines
3.6 KiB
ArmAsm
150 lines
3.6 KiB
ArmAsm
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/* $NetBSD: vidc_mc.S,v 1.1 2001/10/05 22:27:45 reinoud Exp $ */
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/*
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* Copyright (c) 1994-1995 Melvyn Tang-Richardson
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* Copyright (c) 1994-1995 RiscBSD kernel team
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the RiscBSD kernel team
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE RISCBSD TEAM ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* RiscBSD kernel project
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*
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* vidc_mc.S
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*
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* Console assembly functions
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*
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* Created : 17/09/94
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*/
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#include <machine/asm.h>
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/*
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* On entry:
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* r0 = addr
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* r1 = font
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* r2 = col
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* r3 = xres
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*/
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/* Optimised for 8x16 font at the moment */
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ENTRY(vidcrendermc_render)
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stmfd sp!, {r0-r9, lr}
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/* Generate colour mask */
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mov r9, r2, lsr #16
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mov r4, r2, lsr #8
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and r9, r9, #0xff
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and r4, r4, #0xff
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and r2, r2, #0xff
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/* For each row (8 pixels) */
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Lvidcrendermc_render_loop:
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ldrb r5, [r1], #1
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mov r7, #0
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mov r8, #0
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/* This loop will get *SO* much faster with the new algorithmn */
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tst r5, #8
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orrne r7, r2, r7, lsl #8
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orreq r7, r4, r7, lsl #8
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tst r5, #4
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orrne r7, r2, r7, lsl #8
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orreq r7, r4, r7, lsl #8
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tst r5, #2
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orrne r7, r2, r7, lsl #8
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orreq r7, r4, r7, lsl #8
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tst r5, #1
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orrne r7, r2, r7, lsl #8
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orreq r7, r4, r7, lsl #8
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tst r5, #0x80
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orrne r8, r2, r8, lsl #8
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orreq r8, r4, r8, lsl #8
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tst r5, #0x40
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orrne r8, r2, r8, lsl #8
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orreq r8, r4, r8, lsl #8
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tst r5, #0x20
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orrne r8, r2, r8, lsl #8
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orreq r8, r4, r8, lsl #8
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tst r5, #0x10
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orrne r8, r2, r8, lsl #8
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orreq r8, r4, r8, lsl #8
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stmia r0, {r7, r8}
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add r0, r0, r3
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subs r9, r9, #1
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bne Lvidcrendermc_render_loop
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ldmfd sp!, {r0-r9, pc}
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/*
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* On entry:
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* r0 = start
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* r1 = end
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* r2 = col
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*/
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ENTRY(vidcrendermc_cls)
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stmfd sp!, {r0-r9, lr}
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mov r3, r2
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mov r4, r2
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mov r5, r2
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mov r6, r2
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mov r7, r2
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mov r8, r2
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mov r9, r2
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Lvidcrendermc_cls_loop:
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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stmia r0!, {r2-r9}
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cmp r0, r1
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ble Lvidcrendermc_cls_loop
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ldmfd sp!, {r0-r9, pc}
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