sparc: Commonize memcmp assembler.
Signed-off-by: David S. Miller <davem@davemloft.net>
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18cdae68e7
6 changed files with 28 additions and 63 deletions
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@ -61,7 +61,6 @@ extern void (*bzero_1page)(void *);
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extern void *__bzero(void *, size_t);
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extern void *__memscan_zero(void *, size_t);
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extern void *__memscan_generic(void *, int, size_t);
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extern int __memcmp(const void *, const void *, __kernel_size_t);
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extern int __strncmp(const char *, const char *, __kernel_size_t);
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extern int __ashrdi3(int, int);
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@ -211,7 +210,6 @@ EXPORT_SYMBOL(bzero_1page);
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EXPORT_SYMBOL(__bzero);
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EXPORT_SYMBOL(__memscan_zero);
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EXPORT_SYMBOL(__memscan_generic);
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EXPORT_SYMBOL(__memcmp);
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EXPORT_SYMBOL(__strncmp);
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EXPORT_SYMBOL(__memmove);
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@ -62,7 +62,6 @@ extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
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extern void *__bzero(void *, size_t);
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extern void *__memscan_zero(void *, size_t);
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extern void *__memscan_generic(void *, int, size_t);
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extern int __memcmp(const void *, const void *, __kernel_size_t);
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extern __kernel_size_t strlen(const char *);
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extern void sys_sigsuspend(void);
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extern int compat_sys_ioctl(unsigned int fd, unsigned int cmd, u32 arg);
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@ -223,7 +222,6 @@ EXPORT_SYMBOL(copy_user_page);
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EXPORT_SYMBOL(__bzero);
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EXPORT_SYMBOL(__memscan_zero);
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EXPORT_SYMBOL(__memscan_generic);
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EXPORT_SYMBOL(__memcmp);
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EXPORT_SYMBOL(__memset);
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EXPORT_SYMBOL(csum_partial);
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@ -9,7 +9,7 @@ lib-$(CONFIG_SPARC32) += memcpy.o memset.o
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lib-y += strlen.o
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lib-y += checksum_$(BITS).o
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lib-$(CONFIG_SPARC32) += blockops.o
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lib-y += memscan_$(BITS).o memcmp_$(BITS).o strncmp_$(BITS).o
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lib-y += memscan_$(BITS).o memcmp.o strncmp_$(BITS).o
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lib-y += strncpy_from_user_$(BITS).o strlen_user_$(BITS).o
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lib-$(CONFIG_SPARC32) += divdi3.o udivdi3.o
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lib-$(CONFIG_SPARC32) += copy_user.o locks.o
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27
arch/sparc/lib/memcmp.S
Normal file
27
arch/sparc/lib/memcmp.S
Normal file
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@ -0,0 +1,27 @@
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/* Sparc optimized memcmp code.
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*
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* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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* Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net)
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*/
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#include <linux/linkage.h>
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#include <asm/asm.h>
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.text
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ENTRY(memcmp)
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cmp %o2, 0
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1: BRANCH32(be, pn, 2f)
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nop
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ldub [%o0], %g7
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ldub [%o1], %g3
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sub %o2, 1, %o2
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add %o0, 1, %o0
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add %o1, 1, %o1
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subcc %g7, %g3, %g3
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BRANCH32(be, pt, 1b)
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cmp %o2, 0
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retl
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mov %g3, %o0
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2: retl
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mov 0, %o0
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ENDPROC(memcmp)
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@ -1,30 +0,0 @@
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.text
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.align 4
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.global __memcmp, memcmp
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__memcmp:
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memcmp:
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cmp %o2, 0
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ble L3
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mov 0, %g3
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L5:
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ldub [%o0], %g2
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ldub [%o1], %g3
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sub %g2, %g3, %g2
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mov %g2, %g3
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sll %g2, 24, %g2
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cmp %g2, 0
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bne L3
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add %o0, 1, %o0
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add %o2, -1, %o2
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cmp %o2, 0
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bg L5
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add %o1, 1, %o1
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L3:
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sll %g3, 24, %o0
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sra %o0, 24, %o0
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retl
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nop
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@ -1,28 +0,0 @@
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/*
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* Sparc64 optimized memcmp code.
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*
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* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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* Copyright (C) 2000 David S. Miller (davem@redhat.com)
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*/
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.text
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.align 32
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.globl __memcmp, memcmp
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__memcmp:
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memcmp:
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cmp %o2, 0 ! IEU1 Group
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loop: be,pn %icc, ret_0 ! CTI
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nop ! IEU0
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ldub [%o0], %g7 ! LSU Group
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ldub [%o1], %g3 ! LSU Group
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sub %o2, 1, %o2 ! IEU0
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add %o0, 1, %o0 ! IEU1
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add %o1, 1, %o1 ! IEU0 Group
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subcc %g7, %g3, %g3 ! IEU1 Group
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be,pt %icc, loop ! CTI
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cmp %o2, 0 ! IEU1 Group
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ret_n0: retl
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mov %g3, %o0
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ret_0: retl
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mov 0, %o0
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