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>
53 lines
1021 B
ArmAsm
53 lines
1021 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 *strncpy(char *s1, const char *s2, size_t n);
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* R0 = address (dest)
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* R1 = address (src)
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* R2 = size (n)
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* Returns a pointer to the destination string dest
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*/
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#ifdef CONFIG_STRNCMP_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(_strncmp)
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CC = R2 == 0;
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if CC JUMP 5f;
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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 3f; /* not equal, break out */
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CC = R0; /* at end of s1? */
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if ! cc jump 4f; /* yes, all done */
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R2 += -1; /* no, adjust count */
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CC = R2 == 0;
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if ! cc jump 1b (bp); /* more to do, keep going */
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2:
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R0 = 0; /* strings are equal */
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jump.s 4f;
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3:
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R0 = R0 - R1; /* *s1 - *s2 */
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4:
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RTS;
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5:
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R0 = 0;
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RTS;
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ENDPROC(_strncmp)
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