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| author | David S. Miller <davem@davemloft.net> | 2008-12-09 13:09:07 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-12-09 13:09:07 +0100 |
| commit | 18cdae68e7bb24f33883e58f366cde38ea89ba17 (patch) | |
| tree | 891b87b5e3c0b605f5e7d2b9809282b67c005293 /arch/sparc/lib | |
| parent | sparc: Unify strlen assembler. (diff) | |
| download | linux-18cdae68e7bb24f33883e58f366cde38ea89ba17.tar.xz linux-18cdae68e7bb24f33883e58f366cde38ea89ba17.zip | |
sparc: Commonize memcmp assembler.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/lib')
| -rw-r--r-- | arch/sparc/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/sparc/lib/memcmp.S | 27 | ||||
| -rw-r--r-- | arch/sparc/lib/memcmp_32.S | 30 | ||||
| -rw-r--r-- | arch/sparc/lib/memcmp_64.S | 28 |
4 files changed, 28 insertions, 59 deletions
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile index 0db2c61a0f78..375016e19144 100644 --- a/arch/sparc/lib/Makefile +++ b/arch/sparc/lib/Makefile @@ -9,7 +9,7 @@ lib-$(CONFIG_SPARC32) += memcpy.o memset.o lib-y += strlen.o lib-y += checksum_$(BITS).o lib-$(CONFIG_SPARC32) += blockops.o -lib-y += memscan_$(BITS).o memcmp_$(BITS).o strncmp_$(BITS).o +lib-y += memscan_$(BITS).o memcmp.o strncmp_$(BITS).o lib-y += strncpy_from_user_$(BITS).o strlen_user_$(BITS).o lib-$(CONFIG_SPARC32) += divdi3.o udivdi3.o lib-$(CONFIG_SPARC32) += copy_user.o locks.o diff --git a/arch/sparc/lib/memcmp.S b/arch/sparc/lib/memcmp.S new file mode 100644 index 000000000000..efa106c41ed0 --- /dev/null +++ b/arch/sparc/lib/memcmp.S @@ -0,0 +1,27 @@ +/* Sparc optimized memcmp code. + * + * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net) + */ + +#include <linux/linkage.h> +#include <asm/asm.h> + + .text +ENTRY(memcmp) + cmp %o2, 0 +1: BRANCH32(be, pn, 2f) + nop + ldub [%o0], %g7 + ldub [%o1], %g3 + sub %o2, 1, %o2 + add %o0, 1, %o0 + add %o1, 1, %o1 + subcc %g7, %g3, %g3 + BRANCH32(be, pt, 1b) + cmp %o2, 0 + retl + mov %g3, %o0 +2: retl + mov 0, %o0 +ENDPROC(memcmp) diff --git a/arch/sparc/lib/memcmp_32.S b/arch/sparc/lib/memcmp_32.S deleted file mode 100644 index 9e21f0282659..000000000000 --- a/arch/sparc/lib/memcmp_32.S +++ /dev/null @@ -1,30 +0,0 @@ - .text - .align 4 - .global __memcmp, memcmp -__memcmp: -memcmp: - cmp %o2, 0 - ble L3 - mov 0, %g3 -L5: - ldub [%o0], %g2 - ldub [%o1], %g3 - sub %g2, %g3, %g2 - mov %g2, %g3 - sll %g2, 24, %g2 - - cmp %g2, 0 - bne L3 - add %o0, 1, %o0 - - add %o2, -1, %o2 - - cmp %o2, 0 - bg L5 - add %o1, 1, %o1 -L3: - sll %g3, 24, %o0 - sra %o0, 24, %o0 - - retl - nop diff --git a/arch/sparc/lib/memcmp_64.S b/arch/sparc/lib/memcmp_64.S deleted file mode 100644 index d3fdaa898566..000000000000 --- a/arch/sparc/lib/memcmp_64.S +++ /dev/null @@ -1,28 +0,0 @@ -/* - * Sparc64 optimized memcmp code. - * - * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) - * Copyright (C) 2000 David S. Miller (davem@redhat.com) - */ - - .text - .align 32 - .globl __memcmp, memcmp -__memcmp: -memcmp: - cmp %o2, 0 ! IEU1 Group -loop: be,pn %icc, ret_0 ! CTI - nop ! IEU0 - ldub [%o0], %g7 ! LSU Group - ldub [%o1], %g3 ! LSU Group - sub %o2, 1, %o2 ! IEU0 - add %o0, 1, %o0 ! IEU1 - add %o1, 1, %o1 ! IEU0 Group - subcc %g7, %g3, %g3 ! IEU1 Group - be,pt %icc, loop ! CTI - cmp %o2, 0 ! IEU1 Group - -ret_n0: retl - mov %g3, %o0 -ret_0: retl - mov 0, %o0 |