Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 80 insertions, 0 deletions

diff --git a/arch/sparc64/lib/strlen.S b/arch/sparc64/lib/strlen.S
new file mode 100644
index 000000000000..e9ba1920d818
--- /dev/null
+++ b/arch/sparc64/lib/strlen.S
@@ -0,0 +1,80 @@
+/* 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