diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm26/lib/io-writesl.S |
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!
Diffstat (limited to 'arch/arm26/lib/io-writesl.S')
-rw-r--r-- | arch/arm26/lib/io-writesl.S | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm26/lib/io-writesl.S b/arch/arm26/lib/io-writesl.S new file mode 100644 index 00000000000..4d6049b16e7 --- /dev/null +++ b/arch/arm26/lib/io-writesl.S @@ -0,0 +1,56 @@ +/* + * linux/arch/arm26/lib/io-writesl.S + * + * Copyright (C) 1995-2000 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/linkage.h> +#include <asm/assembler.h> +#include <asm/hardware.h> + +ENTRY(__raw_writesl) + teq r2, #0 @ do we have to check for the zero len? + moveq pc, lr + ands ip, r1, #3 + bne 2f + +1: ldr r3, [r1], #4 + str r3, [r0] + subs r2, r2, #1 + bne 1b + mov pc, lr + +2: bic r1, r1, #3 + cmp ip, #2 + ldr r3, [r1], #4 + bgt 4f + blt 5f + +3: mov ip, r3, lsr #16 + ldr r3, [r1], #4 + orr ip, ip, r3, lsl #16 + str ip, [r0] + subs r2, r2, #1 + bne 3b + mov pc, lr + +4: mov ip, r3, lsr #24 + ldr r3, [r1], #4 + orr ip, ip, r3, lsl #8 + str ip, [r0] + subs r2, r2, #1 + bne 4b + mov pc, lr + +5: mov ip, r3, lsr #8 + ldr r3, [r1], #4 + orr ip, ip, r3, lsl #24 + str ip, [r0] + subs r2, r2, #1 + bne 5b + mov pc, lr + + |