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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
| commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
| tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/arm/lib/strchr.S | |
| parent | Initial commit. (diff) | |
| download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip | |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/lib/strchr.S')
| -rw-r--r-- | arch/arm/lib/strchr.S | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/lib/strchr.S b/arch/arm/lib/strchr.S new file mode 100644 index 000000000..09e2cc8a8 --- /dev/null +++ b/arch/arm/lib/strchr.S @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/arch/arm/lib/strchr.S + * + * Copyright (C) 1995-2000 Russell King + * + * ASM optimised string functions + */ +#include <linux/linkage.h> +#include <asm/assembler.h> + + .text + .align 5 +ENTRY(strchr) + and r1, r1, #0xff +1: ldrb r2, [r0], #1 + teq r2, r1 + teqne r2, #0 + bne 1b + teq r2, r1 + movne r0, #0 + subeq r0, r0, #1 + ret lr +ENDPROC(strchr) |