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, 84 insertions, 0 deletions

diff --git a/arch/h8300/lib/memcpy.S b/arch/h8300/lib/memcpy.S
new file mode 100644
index 000000000000..fdcbc1ee673c
--- /dev/null
+++ b/arch/h8300/lib/memcpy.S
@@ -0,0 +1,84 @@
+;;; memcpy.S
+
+#include <asm/linkage.h>
+
+#if defined(__H8300H__) 
+        .h8300h
+#endif
+#if defined(__H8300S__) 
+        .h8300s
+#endif
+
+        .text
+.global SYMBOL_NAME(memcpy)
+
+;;; void *memcpy(void *to, void *from, size_t n)
+SYMBOL_NAME_LABEL(memcpy)
+        mov.l   er2,er2
+        bne     1f
+        rts     
+1:      
+        ;; address check
+        bld     #0,r0l
+        bxor    #0,r1l
+        bcs     4f
+        mov.l   er4,@-sp
+        mov.l   er0,@-sp
+        btst    #0,r0l
+        beq     1f
+        ;; (aligned even) odd address
+        mov.b   @er1,r3l
+        mov.b   r3l,@er0
+        adds    #1,er1
+        adds    #1,er0
+        dec.l   #1,er2
+        beq     3f
+1:      
+        ;; n < sizeof(unsigned long) check
+        sub.l   er4,er4
+        adds    #4,er4          ; loop count check value
+        cmp.l   er4,er2
+        blo     2f
+        ;; unsigned long copy
+1:      
+        mov.l   @er1,er3
+        mov.l   er3,@er0
+        adds    #4,er0
+        adds    #4,er1
+        subs    #4,er2
+        cmp.l   er4,er2
+        bcc     1b      
+        ;; rest
+2:      
+        mov.l   er2,er2
+        beq     3f
+1:      
+        mov.b   @er1,r3l
+        mov.b   r3l,@er0
+        adds    #1,er1
+        adds    #1,er0
+        dec.l   #1,er2
+        bne     1b
+3:
+        mov.l   @sp+,er0
+        mov.l   @sp+,er4
+        rts
+
+        ;; odd <- even / even <- odd
+4:      
+        mov.l   er4,er3
+        mov.l   er2,er4
+        mov.l   er5,er2
+        mov.l   er1,er5
+        mov.l   er6,er1
+        mov.l   er0,er6
+1:
+        eepmov.w
+        mov.w   r4,r4
+        bne     1b
+        dec.w   #1,e4
+        bpl     1b
+        mov.l   er1,er6
+        mov.l   er2,er5
+        mov.l   er3,er4
+        rts