479ba60358
Since 'extern inline' doesn't work correctly in the context of the Linux kernel (too many overriding defines), move the string functions to normal lib/ assembly files (like the existing mem funcs). This avoids the forced inline all over the kernel and allows us to place them constantly in L1. This also avoids some module failures when gcc inserts calls to string functions but the kernel build system doesn't fully consult the library archives. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
44 lines
943 B
ArmAsm
44 lines
943 B
ArmAsm
/*
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* Copyright 2005-2010 Analog Devices Inc.
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*
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* Licensed under the ADI BSD license or the GPL-2 (or later)
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*/
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#include <linux/linkage.h>
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/* void *strcmp(char *s1, const char *s2);
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* R0 = address (s1)
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* R1 = address (s2)
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*
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* Returns an integer less than, equal to, or greater than zero if s1
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* (or the first n bytes thereof) is found, respectively, to be less
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* than, to match, or be greater than s2.
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*/
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#ifdef CONFIG_STRCMP_L1
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.section .l1.text
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#else
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.text
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#endif
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.align 2
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ENTRY(_strcmp)
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P0 = R0 ; /* s1 */
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P1 = R1 ; /* s2 */
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1:
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R0 = B[P0++] (Z); /* get *s1 */
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R1 = B[P1++] (Z); /* get *s2 */
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CC = R0 == R1; /* compare a byte */
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if ! cc jump 2f; /* not equal, break out */
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CC = R0; /* at end of s1? */
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if cc jump 1b (bp); /* no, keep going */
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jump.s 3f; /* strings are equal */
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2:
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R0 = R0 - R1; /* *s1 - *s2 */
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3:
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RTS;
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ENDPROC(_strcmp)
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