Linux-2.6.12-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!
diff --git a/arch/sparc64/lib/strncpy_from_user.S b/arch/sparc64/lib/strncpy_from_user.S
new file mode 100644
index 0000000..09cbbaa
--- /dev/null
+++ b/arch/sparc64/lib/strncpy_from_user.S
@@ -0,0 +1,139 @@
+/* $Id: strncpy_from_user.S,v 1.6 1999/05/25 16:53:05 jj Exp $
+ * strncpy_from_user.S: Sparc64 strncpy from userspace.
+ *
+ * Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz)
+ */
+
+#include <asm/asi.h>
+#include <asm/errno.h>
+
+ .data
+ .align 8
+0: .xword 0x0101010101010101
+
+ .text
+ .align 32
+
+ /* Must return:
+ *
+ * -EFAULT for an exception
+ * count if we hit the buffer limit
+ * bytes copied if we hit a null byte
+ * (without the null byte)
+ *
+ * This implementation assumes:
+ * %o1 is 8 aligned => !(%o2 & 7)
+ * %o0 is 8 aligned (if not, it will be slooooow, but will work)
+ *
+ * This is optimized for the common case:
+ * in my stats, 90% of src are 8 aligned (even on sparc32)
+ * and average length is 18 or so.
+ */
+
+ .globl __strncpy_from_user
+ .type __strncpy_from_user,#function
+__strncpy_from_user:
+ /* %o0=dest, %o1=src, %o2=count */
+ andcc %o1, 7, %g0 ! IEU1 Group
+ bne,pn %icc, 30f ! CTI
+ add %o0, %o2, %g3 ! IEU0
+60: ldxa [%o1] %asi, %g1 ! Load Group
+ brlez,pn %o2, 10f ! CTI
+ mov %o0, %o3 ! IEU0
+50: sethi %hi(0b), %o4 ! IEU0 Group
+ ldx [%o4 + %lo(0b)], %o4 ! Load
+ sllx %o4, 7, %o5 ! IEU1 Group
+1: sub %g1, %o4, %g2 ! IEU0 Group
+ stx %g1, [%o0] ! Store
+ add %o0, 8, %o0 ! IEU1
+ andcc %g2, %o5, %g0 ! IEU1 Group
+ bne,pn %xcc, 5f ! CTI
+ add %o1, 8, %o1 ! IEU0
+ cmp %o0, %g3 ! IEU1 Group
+ bl,a,pt %xcc, 1b ! CTI
+61: ldxa [%o1] %asi, %g1 ! Load
+10: retl ! CTI Group
+ mov %o2, %o0 ! IEU0
+5: srlx %g2, 32, %g7 ! IEU0 Group
+ sethi %hi(0xff00), %o4 ! IEU1
+ andcc %g7, %o5, %g0 ! IEU1 Group
+ be,pn %icc, 2f ! CTI
+ or %o4, %lo(0xff00), %o4 ! IEU0
+ srlx %g1, 48, %g7 ! IEU0 Group
+ andcc %g7, %o4, %g0 ! IEU1 Group
+ be,pn %icc, 50f ! CTI
+ andcc %g7, 0xff, %g0 ! IEU1 Group
+ be,pn %icc, 51f ! CTI
+ srlx %g1, 32, %g7 ! IEU0
+ andcc %g7, %o4, %g0 ! IEU1 Group
+ be,pn %icc, 52f ! CTI
+ andcc %g7, 0xff, %g0 ! IEU1 Group
+ be,pn %icc, 53f ! CTI
+2: andcc %g2, %o5, %g0 ! IEU1 Group
+ be,pn %icc, 2f ! CTI
+ srl %g1, 16, %g7 ! IEU0
+ andcc %g7, %o4, %g0 ! IEU1 Group
+ be,pn %icc, 54f ! CTI
+ andcc %g7, 0xff, %g0 ! IEU1 Group
+ be,pn %icc, 55f ! CTI
+ andcc %g1, %o4, %g0 ! IEU1 Group
+ be,pn %icc, 56f ! CTI
+ andcc %g1, 0xff, %g0 ! IEU1 Group
+ be,a,pn %icc, 57f ! CTI
+ sub %o0, %o3, %o0 ! IEU0
+2: cmp %o0, %g3 ! IEU1 Group
+ bl,a,pt %xcc, 50b ! CTI
+62: ldxa [%o1] %asi, %g1 ! Load
+ retl ! CTI Group
+ mov %o2, %o0 ! IEU0
+50: sub %o0, %o3, %o0
+ retl
+ sub %o0, 8, %o0
+51: sub %o0, %o3, %o0
+ retl
+ sub %o0, 7, %o0
+52: sub %o0, %o3, %o0
+ retl
+ sub %o0, 6, %o0
+53: sub %o0, %o3, %o0
+ retl
+ sub %o0, 5, %o0
+54: sub %o0, %o3, %o0
+ retl
+ sub %o0, 4, %o0
+55: sub %o0, %o3, %o0
+ retl
+ sub %o0, 3, %o0
+56: sub %o0, %o3, %o0
+ retl
+ sub %o0, 2, %o0
+57: retl
+ sub %o0, 1, %o0
+30: brlez,pn %o2, 3f
+ sub %g0, %o2, %o3
+ add %o0, %o2, %o0
+63: lduba [%o1] %asi, %o4
+1: add %o1, 1, %o1
+ brz,pn %o4, 2f
+ stb %o4, [%o0 + %o3]
+ addcc %o3, 1, %o3
+ bne,pt %xcc, 1b
+64: lduba [%o1] %asi, %o4
+3: retl
+ mov %o2, %o0
+2: retl
+ add %o2, %o3, %o0
+ .size __strncpy_from_user, .-__strncpy_from_user
+
+ .section .fixup,#alloc,#execinstr
+ .align 4
+4: retl
+ mov -EFAULT, %o0
+
+ .section __ex_table,#alloc
+ .align 4
+ .word 60b, 4b
+ .word 61b, 4b
+ .word 62b, 4b
+ .word 63b, 4b
+ .word 64b, 4b