sparc: Unify strlen assembler.

Use the new asm/asm.h header to help commonize the
strlen assembler between 32-bit and 64-bit

While we're here, use proper linux/linkage.h macros
instead of by-hand stuff.

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

diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
index 05ae5c945e35aaed3bf3f6521c960978fd773c55..0db2c61a0f7890ea066e80b7e38d7487d072da96 100644 (file)
--- a/arch/sparc/lib/Makefile
+++ b/arch/sparc/lib/Makefile
@@ -6,7 +6,7 @@ ccflags-y := -Werror
 
 lib-$(CONFIG_SPARC32) += mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o
 lib-$(CONFIG_SPARC32) += memcpy.o memset.o
-lib-y                 += strlen_$(BITS).o
+lib-y                 += strlen.o
 lib-y                 += checksum_$(BITS).o
 lib-$(CONFIG_SPARC32) += blockops.o
 lib-y                 += memscan_$(BITS).o memcmp_$(BITS).o strncmp_$(BITS).o

diff --git a/arch/sparc/lib/strlen.S b/arch/sparc/lib/strlen.S
new file mode 100644 (file)
index 0000000..536f835
--- /dev/null
+++ b/arch/sparc/lib/strlen.S
@@ -0,0 +1,80 @@
+/* strlen.S: Sparc optimized strlen code
+ * Hand optimized from GNU libc's strlen
+ * Copyright (C) 1991,1996 Free Software Foundation
+ * Copyright (C) 1996,2008 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/linkage.h>
+#include <asm/asm.h>
+
+#define LO_MAGIC 0x01010101
+#define HI_MAGIC 0x80808080
+
+       .text
+ENTRY(strlen)
+       mov     %o0, %o1
+       andcc   %o0, 3, %g0
+       BRANCH32(be, pt, 9f)
+        sethi  %hi(HI_MAGIC), %o4
+       ldub    [%o0], %o5
+       BRANCH_REG_ZERO(pn, %o5, 11f)
+        add    %o0, 1, %o0
+       andcc   %o0, 3, %g0
+       BRANCH32(be, pn, 4f)
+        or     %o4, %lo(HI_MAGIC), %o3
+       ldub    [%o0], %o5
+       BRANCH_REG_ZERO(pn, %o5, 12f)
+        add    %o0, 1, %o0
+       andcc   %o0, 3, %g0
+       BRANCH32(be, pt, 5f)
+        sethi  %hi(LO_MAGIC), %o4
+       ldub    [%o0], %o5
+       BRANCH_REG_ZERO(pn, %o5, 13f)
+        add    %o0, 1, %o0
+       BRANCH32(ba, pt, 8f)
+        or     %o4, %lo(LO_MAGIC), %o2
+9:
+       or      %o4, %lo(HI_MAGIC), %o3
+4:
+       sethi   %hi(LO_MAGIC), %o4
+5:
+       or      %o4, %lo(LO_MAGIC), %o2
+8:
+       ld      [%o0], %o5
+2:
+       sub     %o5, %o2, %o4
+       andcc   %o4, %o3, %g0
+       BRANCH32(be, pt, 8b)
+        add    %o0, 4, %o0
+
+       /* Check every byte. */
+       srl     %o5, 24, %g7
+       andcc   %g7, 0xff, %g0
+       BRANCH32(be, pn, 1f)
+        add    %o0, -4, %o4
+       srl     %o5, 16, %g7
+       andcc   %g7, 0xff, %g0
+       BRANCH32(be, pn, 1f)
+        add    %o4, 1, %o4
+       srl     %o5, 8, %g7
+       andcc   %g7, 0xff, %g0
+       BRANCH32(be, pn, 1f)
+        add    %o4, 1, %o4
+       andcc   %o5, 0xff, %g0
+       BRANCH32_ANNUL(bne, pt, 2b)
+        ld     [%o0], %o5
+       add     %o4, 1, %o4
+1:
+       retl
+        sub    %o4, %o1, %o0
+11:
+       retl
+        mov    0, %o0
+12:
+       retl
+        mov    1, %o0
+13:
+       retl
+        mov    2, %o0
+ENDPROC(strlen)

diff --git a/arch/sparc/lib/strlen_32.S b/arch/sparc/lib/strlen_32.S
deleted file mode 100644 (file)
index ed9a763..0000000
--- a/arch/sparc/lib/strlen_32.S
+++ /dev/null
@@ -1,81 +0,0 @@
-/* strlen.S: Sparc optimized strlen code
- * Hand optimized from GNU libc's strlen
- * Copyright (C) 1991,1996 Free Software Foundation
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-
-#define LO_MAGIC 0x01010101
-#define HI_MAGIC 0x80808080
-
-0:
-       ldub    [%o0], %o5
-       cmp     %o5, 0
-       be      1f
-        add    %o0, 1, %o0
-       andcc   %o0, 3, %g0
-       be      4f
-        or     %o4, %lo(HI_MAGIC), %o3
-       ldub    [%o0], %o5
-       cmp     %o5, 0
-       be      2f
-        add    %o0, 1, %o0
-       andcc   %o0, 3, %g0
-       be      5f
-        sethi  %hi(LO_MAGIC), %o4
-       ldub    [%o0], %o5
-       cmp     %o5, 0
-       be      3f
-        add    %o0, 1, %o0
-       b       8f
-        or     %o4, %lo(LO_MAGIC), %o2
-1:
-       retl
-        mov    0, %o0
-2:
-       retl
-        mov    1, %o0
-3:
-       retl
-        mov    2, %o0
-
-       .align 4
-       .global strlen
-strlen:
-       mov     %o0, %o1
-       andcc   %o0, 3, %g0
-       bne     0b
-        sethi  %hi(HI_MAGIC), %o4
-       or      %o4, %lo(HI_MAGIC), %o3
-4:
-       sethi   %hi(LO_MAGIC), %o4
-5:
-       or      %o4, %lo(LO_MAGIC), %o2
-8:
-       ld      [%o0], %o5
-2:
-       sub     %o5, %o2, %o4
-       andcc   %o4, %o3, %g0
-       be      8b
-        add    %o0, 4, %o0
-
-       /* Check every byte. */
-       srl     %o5, 24, %g5
-       andcc   %g5, 0xff, %g0
-       be      1f
-        add    %o0, -4, %o4
-       srl     %o5, 16, %g5
-       andcc   %g5, 0xff, %g0
-       be      1f
-        add    %o4, 1, %o4
-       srl     %o5, 8, %g5
-       andcc   %g5, 0xff, %g0
-       be      1f
-        add    %o4, 1, %o4
-       andcc   %o5, 0xff, %g0
-       bne,a   2b
-        ld     [%o0], %o5
-       add     %o4, 1, %o4
-1:
-       retl
-        sub    %o4, %o1, %o0

diff --git a/arch/sparc/lib/strlen_64.S b/arch/sparc/lib/strlen_64.S
deleted file mode 100644 (file)
index e9ba192..0000000
--- a/arch/sparc/lib/strlen_64.S
+++ /dev/null
@@ -1,80 +0,0 @@
-/* strlen.S: Sparc64 optimized strlen code
- * Hand optimized from GNU libc's strlen
- * Copyright (C) 1991,1996 Free Software Foundation
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
-
-#define LO_MAGIC 0x01010101
-#define HI_MAGIC 0x80808080
-
-       .align  32
-       .globl  strlen
-       .type   strlen,#function
-strlen:
-       mov     %o0, %o1
-       andcc   %o0, 3, %g0
-       be,pt   %icc, 9f
-        sethi  %hi(HI_MAGIC), %o4
-       ldub    [%o0], %o5
-       brz,pn  %o5, 11f
-        add    %o0, 1, %o0
-       andcc   %o0, 3, %g0
-       be,pn   %icc, 4f
-        or     %o4, %lo(HI_MAGIC), %o3
-       ldub    [%o0], %o5
-       brz,pn  %o5, 12f
-        add    %o0, 1, %o0
-       andcc   %o0, 3, %g0
-       be,pt   %icc, 5f
-        sethi  %hi(LO_MAGIC), %o4
-       ldub    [%o0], %o5
-       brz,pn  %o5, 13f
-        add    %o0, 1, %o0
-       ba,pt   %icc, 8f
-        or     %o4, %lo(LO_MAGIC), %o2
-9:
-       or      %o4, %lo(HI_MAGIC), %o3
-4:
-       sethi   %hi(LO_MAGIC), %o4
-5:
-       or      %o4, %lo(LO_MAGIC), %o2
-8:
-       ld      [%o0], %o5
-2:
-       sub     %o5, %o2, %o4
-       andcc   %o4, %o3, %g0
-       be,pt   %icc, 8b
-        add    %o0, 4, %o0
-
-       /* Check every byte. */
-       srl     %o5, 24, %g7
-       andcc   %g7, 0xff, %g0
-       be,pn   %icc, 1f
-        add    %o0, -4, %o4
-       srl     %o5, 16, %g7
-       andcc   %g7, 0xff, %g0
-       be,pn   %icc, 1f
-        add    %o4, 1, %o4
-       srl     %o5, 8, %g7
-       andcc   %g7, 0xff, %g0
-       be,pn   %icc, 1f
-        add    %o4, 1, %o4
-       andcc   %o5, 0xff, %g0
-       bne,a,pt %icc, 2b
-        ld     [%o0], %o5
-       add     %o4, 1, %o4
-1:
-       retl
-        sub    %o4, %o1, %o0
-11:
-       retl
-        mov    0, %o0
-12:
-       retl
-        mov    1, %o0
-13:
-       retl
-        mov    2, %o0
-
-       .size   strlen, .-strlen