FreeCalypso > hg > freecalypso-tools
annotate target-utils/libc/memcpy.S @ 479:f2a040324509
Makefile hierarchy: CFLAGS override-ability actually works now
The original version was broken in that CFLAGS=${CFLAGS} passing was
done without quotes, which breaks as soon as there is a space in the
user-set CFLAGS. Changing it to CFLAGS="${CFLAGS}" makes it work
as originally intended.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 14 Feb 2019 04:59:23 +0000 |
| parents | f4619719834f |
| children |
| 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 |