FreeCalypso > hg > freecalypso-tools
annotate target-utils/libc/strlen.S @ 607:d5abcbbf7432
scripts/gtm900[bp]-ffs-clean: remove some more wrong files
An earlier version of GTM900-B firmware has been found in the wild that
still has MFW&BMI layers included (producing files under /mmi), as well as
enlarged /pcm/L[DMR]N files. These files are wrong for FreeCalypso fw
and thus need to be cleaned out.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 11 Feb 2020 21:27:40 +0000 |
parents | 3670e7768ab6 |
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95
3670e7768ab6
target-utils/libc: strlen optimized assembly implementation added
Mychaela Falconia <falcon@freecalypso.org>
parents:
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1 .text |
3670e7768ab6
target-utils/libc: strlen optimized assembly implementation added
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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2 .code 32 |
3670e7768ab6
target-utils/libc: strlen optimized assembly implementation added
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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3 .globl strlen |
3670e7768ab6
target-utils/libc: strlen optimized assembly implementation added
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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4 strlen: |
3670e7768ab6
target-utils/libc: strlen optimized assembly implementation added
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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5 mov r1, r0 |
3670e7768ab6
target-utils/libc: strlen optimized assembly implementation added
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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6 1: ldrb r2, [r0], #1 |
3670e7768ab6
target-utils/libc: strlen optimized assembly implementation added
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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7 cmn r2, #0 |
3670e7768ab6
target-utils/libc: strlen optimized assembly implementation added
Mychaela Falconia <falcon@freecalypso.org>
parents:
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8 bne 1b |
3670e7768ab6
target-utils/libc: strlen optimized assembly implementation added
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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9 sbc r0, r0, r1 |
3670e7768ab6
target-utils/libc: strlen optimized assembly implementation added
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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10 bx lr |