annotate target-utils/libc/memcpy.S @ 489:9fce32cc6220

CHANGES: flash-boot-test watchdog disable command documented
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 21 May 2019 21:25:07 +0000
parents f4619719834f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
89
f4619719834f target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 .text
f4619719834f target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 .code 32
f4619719834f target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 .globl memcpy
f4619719834f target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 memcpy:
f4619719834f target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 1: subs r2, r2, #1
f4619719834f target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 ldrcsb r3, [r1], #1
f4619719834f target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 strcsb r3, [r0], #1
f4619719834f target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 bhi 1b
f4619719834f target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 bx lr