| 0,0 → 1,101 |
|---|
| # |
| # Copyright (c) 2007 Michal Kebrt |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| |
| .text |
| |
| .global memsetb |
| memsetb: |
| b _memsetb |
| nop |
| |
| |
| .global memcpy |
| .global memcpy_from_uspace |
| .global memcpy_to_uspace |
| .global memcpy_from_uspace_failover_address |
| .global memcpy_to_uspace_failover_address |
| |
| memcpy: |
| memcpy_from_uspace: |
| memcpy_to_uspace: |
| add r3, r1, #3 |
| bic r3, r3, #3 |
| cmp r1, r3 |
| stmdb sp!, {r4, lr} |
| beq case_4 |
| case_1: |
| cmp r2, #0 |
| movne ip, #0 |
| beq case_3 |
| case_2: |
| ldrb r3, [ip, r1] |
| strb r3, [ip, r0] |
| add ip, ip, #1 |
| cmp ip, r2 |
| bne case_2 |
| case_3: |
| mov r0, r1 |
| ldmia sp!, {r4, pc} |
| case_4: |
| add r3, r0, #3 |
| bic r3, r3, #3 |
| cmp r0, r3 |
| bne case_1 |
| movs r4, r2, lsr #2 |
| moveq lr, r4 |
| beq case_6 |
| mov lr, #0 |
| mov ip, lr |
| case_5: |
| ldr r3, [ip, r1] |
| add lr, lr, #1 |
| cmp lr, r4 |
| str r3, [ip, r0] |
| add ip, ip, #4 |
| bne case_5 |
| case_6: |
| ands r4, r2, #3 |
| beq case_3 |
| mov r3, lr, lsl #2 |
| add r0, r3, r0 |
| add ip, r3, r1 |
| mov r2, #0 |
| case_7: |
| ldrb r3, [r2, ip] |
| strb r3, [r2, r0] |
| add r2, r2, #1 |
| cmp r2, r4 |
| bne case_7 |
| b case_3 |
| |
| memcpy_from_uspace_failover_address: |
| memcpy_to_uspace_failover_address: |
| mov r0, #0 |
| ldmia sp!, {r4, pc} |
| |