FreeCalypso > hg > freecalypso-tools
annotate target-utils/libc/memcpy.S @ 405:ed9b67e7e741
fcup-smsend: fixed bug in the handling of -W with no dest address argument
The original code checked for argv[optind+1] when argv[optind] is NULL;
on most systems this bogus code gets the first line of the environment,
which is clearly not what we are after. Fixed the code to check argc
instead.
| author | Mychaela Falconia <falcon@freecalypso.org> |
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| date | Sat, 11 Aug 2018 18:59:54 +0000 |
| parents | f4619719834f |
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| rev | line source |
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89
f4619719834f
target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
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changeset
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1 .text |
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f4619719834f
target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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2 .code 32 |
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f4619719834f
target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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3 .globl memcpy |
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f4619719834f
target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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4 memcpy: |
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f4619719834f
target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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5 1: subs r2, r2, #1 |
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f4619719834f
target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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6 ldrcsb r3, [r1], #1 |
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f4619719834f
target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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7 strcsb r3, [r0], #1 |
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f4619719834f
target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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8 bhi 1b |
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f4619719834f
target-utils/libc: our own memcpy assembly implementation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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9 bx lr |