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/sparc/lib/strlen_user.S b/arch/sparc/lib/strlen_user.S
new file mode 100644
index 0000000..8c8a371
--- /dev/null
+++ b/arch/sparc/lib/strlen_user.S
@@ -0,0 +1,109 @@
+/* strlen_user.S: Sparc optimized strlen_user code
+ *
+ * Return length of string in userspace including terminating 0
+ * or 0 for error
+ *
+ * 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
+
+10:
+ ldub [%o0], %o5
+ cmp %o5, 0
+ be 1f
+ add %o0, 1, %o0
+ andcc %o0, 3, %g0
+ be 4f
+ or %o4, %lo(HI_MAGIC), %o3
+11:
+ ldub [%o0], %o5
+ cmp %o5, 0
+ be 2f
+ add %o0, 1, %o0
+ andcc %o0, 3, %g0
+ be 5f
+ sethi %hi(LO_MAGIC), %o4
+12:
+ ldub [%o0], %o5
+ cmp %o5, 0
+ be 3f
+ add %o0, 1, %o0
+ b 13f
+ or %o4, %lo(LO_MAGIC), %o2
+1:
+ retl
+ mov 1, %o0
+2:
+ retl
+ mov 2, %o0
+3:
+ retl
+ mov 3, %o0
+
+ .align 4
+ .global __strlen_user, __strnlen_user
+__strlen_user:
+ sethi %hi(32768), %o1
+__strnlen_user:
+ mov %o1, %g1
+ mov %o0, %o1
+ andcc %o0, 3, %g0
+ bne 10b
+ sethi %hi(HI_MAGIC), %o4
+ or %o4, %lo(HI_MAGIC), %o3
+4:
+ sethi %hi(LO_MAGIC), %o4
+5:
+ or %o4, %lo(LO_MAGIC), %o2
+13:
+ ld [%o0], %o5
+2:
+ sub %o5, %o2, %o4
+ andcc %o4, %o3, %g0
+ bne 82f
+ add %o0, 4, %o0
+ sub %o0, %o1, %g2
+81: cmp %g2, %g1
+ blu 13b
+ mov %o0, %o4
+ ba,a 1f
+
+ /* Check every byte. */
+82: srl %o5, 24, %g5
+ andcc %g5, 0xff, %g0
+ be 1f
+ add %o0, -3, %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 81b
+ sub %o0, %o1, %g2
+
+ add %o4, 1, %o4
+1:
+ retl
+ sub %o4, %o1, %o0
+
+ .section .fixup,#alloc,#execinstr
+ .align 4
+9:
+ retl
+ clr %o0
+
+ .section __ex_table,#alloc
+ .align 4
+
+ .word 10b, 9b
+ .word 11b, 9b
+ .word 12b, 9b
+ .word 13b, 9b