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/memset.S b/arch/sparc/lib/memset.S
new file mode 100644
index 0000000..a65eba4
--- /dev/null
+++ b/arch/sparc/lib/memset.S
@@ -0,0 +1,203 @@
+/* linux/arch/sparc/lib/memset.S: Sparc optimized memset, bzero and clear_user code
+ * Copyright (C) 1991,1996 Free Software Foundation
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ *
+ * Returns 0, if ok, and number of bytes not yet set if exception
+ * occurs and we were called as clear_user.
+ */
+
+#include <asm/ptrace.h>
+
+/* Work around cpp -rob */
+#define ALLOC #alloc
+#define EXECINSTR #execinstr
+#define EX(x,y,a,b) \
+98: x,y; \
+ .section .fixup,ALLOC,EXECINSTR; \
+ .align 4; \
+99: ba 30f; \
+ a, b, %o0; \
+ .section __ex_table,ALLOC; \
+ .align 4; \
+ .word 98b, 99b; \
+ .text; \
+ .align 4
+
+#define EXT(start,end,handler) \
+ .section __ex_table,ALLOC; \
+ .align 4; \
+ .word start, 0, end, handler; \
+ .text; \
+ .align 4
+
+/* Please don't change these macros, unless you change the logic
+ * in the .fixup section below as well.
+ * Store 64 bytes at (BASE + OFFSET) using value SOURCE. */
+#define ZERO_BIG_BLOCK(base, offset, source) \
+ std source, [base + offset + 0x00]; \
+ std source, [base + offset + 0x08]; \
+ std source, [base + offset + 0x10]; \
+ std source, [base + offset + 0x18]; \
+ std source, [base + offset + 0x20]; \
+ std source, [base + offset + 0x28]; \
+ std source, [base + offset + 0x30]; \
+ std source, [base + offset + 0x38];
+
+#define ZERO_LAST_BLOCKS(base, offset, source) \
+ std source, [base - offset - 0x38]; \
+ std source, [base - offset - 0x30]; \
+ std source, [base - offset - 0x28]; \
+ std source, [base - offset - 0x20]; \
+ std source, [base - offset - 0x18]; \
+ std source, [base - offset - 0x10]; \
+ std source, [base - offset - 0x08]; \
+ std source, [base - offset - 0x00];
+
+ .text
+ .align 4
+
+ .globl __bzero_begin
+__bzero_begin:
+
+ .globl __bzero, __memset,
+ .globl memset
+ .globl __memset_start, __memset_end
+__memset_start:
+__memset:
+memset:
+ and %o1, 0xff, %g3
+ sll %g3, 8, %g2
+ or %g3, %g2, %g3
+ sll %g3, 16, %g2
+ or %g3, %g2, %g3
+ b 1f
+ mov %o2, %o1
+3:
+ cmp %o2, 3
+ be 2f
+ EX(stb %g3, [%o0], sub %o1, 0)
+
+ cmp %o2, 2
+ be 2f
+ EX(stb %g3, [%o0 + 0x01], sub %o1, 1)
+
+ EX(stb %g3, [%o0 + 0x02], sub %o1, 2)
+2:
+ sub %o2, 4, %o2
+ add %o1, %o2, %o1
+ b 4f
+ sub %o0, %o2, %o0
+
+__bzero:
+ mov %g0, %g3
+1:
+ cmp %o1, 7
+ bleu 7f
+ andcc %o0, 3, %o2
+
+ bne 3b
+4:
+ andcc %o0, 4, %g0
+
+ be 2f
+ mov %g3, %g2
+
+ EX(st %g3, [%o0], sub %o1, 0)
+ sub %o1, 4, %o1
+ add %o0, 4, %o0
+2:
+ andcc %o1, 0xffffff80, %o3 ! Now everything is 8 aligned and o1 is len to run
+ be 9f
+ andcc %o1, 0x78, %o2
+10:
+ ZERO_BIG_BLOCK(%o0, 0x00, %g2)
+ subcc %o3, 128, %o3
+ ZERO_BIG_BLOCK(%o0, 0x40, %g2)
+11:
+ EXT(10b, 11b, 20f)
+ bne 10b
+ add %o0, 128, %o0
+
+ orcc %o2, %g0, %g0
+9:
+ be 13f
+ andcc %o1, 7, %o1
+
+ srl %o2, 1, %o3
+ set 13f, %o4
+ sub %o4, %o3, %o4
+ jmp %o4
+ add %o0, %o2, %o0
+
+12:
+ ZERO_LAST_BLOCKS(%o0, 0x48, %g2)
+ ZERO_LAST_BLOCKS(%o0, 0x08, %g2)
+13:
+ be 8f
+ andcc %o1, 4, %g0
+
+ be 1f
+ andcc %o1, 2, %g0
+
+ EX(st %g3, [%o0], and %o1, 7)
+ add %o0, 4, %o0
+1:
+ be 1f
+ andcc %o1, 1, %g0
+
+ EX(sth %g3, [%o0], and %o1, 3)
+ add %o0, 2, %o0
+1:
+ bne,a 8f
+ EX(stb %g3, [%o0], and %o1, 1)
+8:
+ retl
+ clr %o0
+7:
+ be 13b
+ orcc %o1, 0, %g0
+
+ be 0f
+8:
+ add %o0, 1, %o0
+ subcc %o1, 1, %o1
+ bne,a 8b
+ EX(stb %g3, [%o0 - 1], add %o1, 1)
+0:
+ retl
+ clr %o0
+__memset_end:
+
+ .section .fixup,#alloc,#execinstr
+ .align 4
+20:
+ cmp %g2, 8
+ bleu 1f
+ and %o1, 0x7f, %o1
+ sub %g2, 9, %g2
+ add %o3, 64, %o3
+1:
+ sll %g2, 3, %g2
+ add %o3, %o1, %o0
+ b 30f
+ sub %o0, %g2, %o0
+21:
+ mov 8, %o0
+ and %o1, 7, %o1
+ sub %o0, %g2, %o0
+ sll %o0, 3, %o0
+ b 30f
+ add %o0, %o1, %o0
+30:
+/* %o4 is faulting address, %o5 is %pc where fault occurred */
+ save %sp, -104, %sp
+ mov %i5, %o0
+ mov %i7, %o1
+ call lookup_fault
+ mov %i4, %o2
+ ret
+ restore
+
+ .globl __bzero_end
+__bzero_end: