annotate target-utils/libc/strlen.S @ 995:74024eb17e04

fc-loadtool help: improve language regarding 16 MiB flash chips In FC project history, 16 MiB flash originally meant Pirelli DP-L10. Then we got FCDEV3B with the same flash (our own design), but now we are discovering more Calypso devices that used such large flash, both late Calypso era (Sony Ericsson K2x0) as well as much earlier ones (FIC FLUID devices.txt file with 2004 dates, Leonardo+ rev 5). Hence we need to migrate to more generic or neutral language in associated documentation, without giving elevated status to specific examples that drove our early project history.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 03 Dec 2023 21:11:12 +0000
parents 3670e7768ab6
children
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3670e7768ab6 target-utils/libc: strlen optimized assembly implementation added
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1 .text
3670e7768ab6 target-utils/libc: strlen optimized assembly implementation added
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2 .code 32
3670e7768ab6 target-utils/libc: strlen optimized assembly implementation added
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3 .globl strlen
3670e7768ab6 target-utils/libc: strlen optimized assembly implementation added
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4 strlen:
3670e7768ab6 target-utils/libc: strlen optimized assembly implementation added
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5 mov r1, r0
3670e7768ab6 target-utils/libc: strlen optimized assembly implementation added
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6 1: ldrb r2, [r0], #1
3670e7768ab6 target-utils/libc: strlen optimized assembly implementation added
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7 cmn r2, #0
3670e7768ab6 target-utils/libc: strlen optimized assembly implementation added
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8 bne 1b
3670e7768ab6 target-utils/libc: strlen optimized assembly implementation added
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9 sbc r0, r0, r1
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10 bx lr