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, 34 insertions, 0 deletions

diff --git a/arch/sparc64/lib/ipcsum.S b/arch/sparc64/lib/ipcsum.S
new file mode 100644
index 000000000000..58ca5b9a8778
--- /dev/null
+++ b/arch/sparc64/lib/ipcsum.S
@@ -0,0 +1,34 @@
+        .text
+        .align  32
+        .globl  ip_fast_csum
+        .type   ip_fast_csum,#function
+ip_fast_csum:   /* %o0 = iph, %o1 = ihl */
+        sub     %o1, 4, %g7
+        lduw    [%o0 + 0x00], %o2
+        lduw    [%o0 + 0x04], %g2
+        lduw    [%o0 + 0x08], %g3
+        addcc   %g2, %o2, %o2
+        lduw    [%o0 + 0x0c], %g2
+        addccc  %g3, %o2, %o2
+        lduw    [%o0 + 0x10], %g3
+
+        addccc  %g2, %o2, %o2
+        addc    %o2, %g0, %o2
+1:      addcc   %g3, %o2, %o2
+        add     %o0, 4, %o0
+        addccc  %o2, %g0, %o2
+        subcc   %g7, 1, %g7
+        be,a,pt %icc, 2f
+         sll    %o2, 16, %g2
+
+        lduw    [%o0 + 0x10], %g3
+        ba,pt   %xcc, 1b
+         nop
+2:      addcc   %o2, %g2, %g2
+        srl     %g2, 16, %o2
+        addc    %o2, %g0, %o2
+        xnor    %g0, %o2, %o2
+        set     0xffff, %o1
+        retl
+         and    %o2, %o1, %o0
+        .size   ip_fast_csum, .-ip_fast_csum