1 /* $NetBSD: rapide_io_asm.S,v 1.1 2001/10/05 22:27:58 reinoud Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Mark Brinicombe. 5 * Copyright (c) 1997 Causality Limited. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Mark Brinicombe 19 * for the NetBSD Project. 20 * 4. The name of the company nor the name of the author may be used to 21 * endorse or promote products derived from this software without specific 22 * prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <machine/asm.h> 38 39 /* 40 * bus_space I/O functions for Yellowstone RapIDE podule 41 * 42 * These are optimised 32 bit transfer routines 43 */ 44 45 ENTRY(rapide_bs_rm_4) 46 add r0, r1, r2 47 mov r1, r3 48 49 /* Test length */ 50 ldr r2, [sp, #0] 51 tst r2, #0x7f 52 beq rapide_rm_4_m128 53 tst r2, #0x07 54 beq rapide_rm_4_m8 55 56 /* xfer 4 bytes at a time */ 57 rapide_rm_4_loop: 58 ldr r3, [r0] 59 str r3, [r1], #0x0004 60 subs r2, r2, #1 61 bne rapide_rm_4_loop 62 63 mov pc, lr 64 65 rapide_rm_4_m8: 66 /* xfer 32 bytes at a time */ 67 stmfd sp!, {r4-r10} 68 69 rapide_rm_4_m8_loop: 70 ldmia r0, {r3-r10} 71 stmia r1!, {r3-r10} 72 subs r2, r2, #8 73 bne rapide_rm_4_m8_loop 74 75 ldmfd sp!, {r4-r10} 76 mov pc, lr 77 78 rapide_rm_4_m128: 79 /* xfer 512 bytes at a time */ 80 stmfd sp!, {r4-r12, r14} 81 82 rapide_rm_4_m128_loop: 83 ldmia r0, {r3-r12, r14} 84 stmia r1!, {r3-r12, r14} 85 ldmia r0, {r3-r12, r14} 86 stmia r1!, {r3-r12, r14} 87 ldmia r0, {r3-r12, r14} 88 stmia r1!, {r3-r12, r14} 89 ldmia r0, {r3-r12, r14} 90 stmia r1!, {r3-r12, r14} 91 ldmia r0, {r3-r12, r14} 92 stmia r1!, {r3-r12, r14} 93 ldmia r0, {r3-r12, r14} 94 stmia r1!, {r3-r12, r14} 95 ldmia r0, {r3-r12, r14} 96 stmia r1!, {r3-r12, r14} 97 ldmia r0, {r3-r12, r14} 98 stmia r1!, {r3-r12, r14} 99 ldmia r0, {r3-r12, r14} 100 stmia r1!, {r3-r12, r14} 101 ldmia r0, {r3-r12, r14} 102 stmia r1!, {r3-r12, r14} 103 ldmia r0, {r3-r12, r14} 104 stmia r1!, {r3-r12, r14} 105 ldmia r0, {r3-r9} 106 stmia r1!, {r3-r9} 107 subs r2, r2, #128 108 bne rapide_rm_4_m128_loop 109 110 ldmfd sp!, {r4-r12, pc} 111 112 ENTRY(rapide_bs_wm_4) 113 add r0, r1, r2 114 mov r1, r3 115 ldr r2, [sp, #0] 116 tst r2, #0x7f 117 beq rapide_wm_4_m128 118 tst r2, #0x07 119 beq rapide_wm_4_m8 120 121 /* xfer 4 bytes at a time */ 122 rapide_wm_4_loop: 123 ldr r3, [r1], #0x0004 124 str r3, [r0] 125 subs r2, r2, #1 126 bne rapide_wm_4_loop 127 128 mov pc, lr 129 130 rapide_wm_4_m8: 131 /* xfer 32 bytes at a time */ 132 stmfd sp!, {r4-r10} 133 134 rapide_wm_4_m8_loop: 135 ldmia r1!, {r3-r10} 136 stmia r0, {r3-r10} 137 subs r2, r2, #8 138 bne rapide_wm_4_m8_loop 139 140 ldmfd sp!, {r4-r10} 141 mov pc, lr 142 143 rapide_wm_4_m128: 144 /* xfer 512 bytes at a time */ 145 stmfd sp!, {r4-r12} 146 147 rapide_wm_4_m128_loop: 148 ldmia r1!, {r3-r12} 149 stmia r0, {r3-r12} 150 ldmia r1!, {r3-r12} 151 stmia r0, {r3-r12} 152 ldmia r1!, {r3-r12} 153 stmia r0, {r3-r12} 154 ldmia r1!, {r3-r12} 155 stmia r0, {r3-r12} 156 ldmia r1!, {r3-r12} 157 stmia r0, {r3-r12} 158 ldmia r1!, {r3-r12} 159 stmia r0, {r3-r12} 160 ldmia r1!, {r3-r12} 161 stmia r0, {r3-r12} 162 ldmia r1!, {r3-r12} 163 stmia r0, {r3-r12} 164 ldmia r1!, {r3-r12} 165 stmia r0, {r3-r12} 166 ldmia r1!, {r3-r12} 167 stmia r0, {r3-r12} 168 ldmia r1!, {r3-r12} 169 stmia r0, {r3-r12} 170 ldmia r1!, {r3-r12} 171 stmia r0, {r3-r12} 172 ldmia r1!, {r3-r10} 173 stmia r0, {r3-r10} 174 subs r2, r2, #128 175 bne rapide_wm_4_m128_loop 176 177 ldmfd sp!, {r4-r12} 178 mov pc, lr 179
Indexes created Mon Sep 29 18:09:42 GMT 2025