sparc: Commonize memcmp assembler.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc/kernel/sparc_ksyms_32.c b/arch/sparc/kernel/sparc_ksyms_32.c
index 3c80562..a4d45fc 100644 (file)
--- a/arch/sparc/kernel/sparc_ksyms_32.c
+++ b/arch/sparc/kernel/sparc_ksyms_32.c
@@ -61,7 +61,6 @@ extern void (*bzero_1page)(void *);
 extern void *__bzero(void *, size_t);
 extern void *__memscan_zero(void *, size_t);
 extern void *__memscan_generic(void *, int, size_t);
-extern int __memcmp(const void *, const void *, __kernel_size_t);
 extern int __strncmp(const char *, const char *, __kernel_size_t);
 
 extern int __ashrdi3(int, int);
@@ -211,7 +210,6 @@ EXPORT_SYMBOL(bzero_1page);
 EXPORT_SYMBOL(__bzero);
 EXPORT_SYMBOL(__memscan_zero);
 EXPORT_SYMBOL(__memscan_generic);
-EXPORT_SYMBOL(__memcmp);
 EXPORT_SYMBOL(__strncmp);
 EXPORT_SYMBOL(__memmove);
 

diff --git a/arch/sparc/kernel/sparc_ksyms_64.c b/arch/sparc/kernel/sparc_ksyms_64.c
index e6d2bb8..59e7ca0 100644 (file)
--- a/arch/sparc/kernel/sparc_ksyms_64.c
+++ b/arch/sparc/kernel/sparc_ksyms_64.c
@@ -62,7 +62,6 @@ extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
 extern void *__bzero(void *, size_t);
 extern void *__memscan_zero(void *, size_t);
 extern void *__memscan_generic(void *, int, size_t);
-extern int __memcmp(const void *, const void *, __kernel_size_t);
 extern __kernel_size_t strlen(const char *);
 extern void sys_sigsuspend(void);
 extern int compat_sys_ioctl(unsigned int fd, unsigned int cmd, u32 arg);
@@ -223,7 +222,6 @@ EXPORT_SYMBOL(copy_user_page);
 EXPORT_SYMBOL(__bzero);
 EXPORT_SYMBOL(__memscan_zero);
 EXPORT_SYMBOL(__memscan_generic);
-EXPORT_SYMBOL(__memcmp);
 EXPORT_SYMBOL(__memset);
 
 EXPORT_SYMBOL(csum_partial);

diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
index 0db2c61..375016e 100644 (file)
--- 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 (file)
index 0000000..efa106c
--- /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 (file)
index 9e21f02..0000000
--- 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 (file)
index d3fdaa8..0000000
--- 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