diff options
author | Paul Mundt <lethal@linux-sh.org> | 2008-07-29 08:09:44 +0900 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2008-07-29 08:09:44 +0900 |
commit | f15cbe6f1a4b4d9df59142fc8e4abb973302cf44 (patch) | |
tree | 774d7b11abaaf33561ab8268bf51ddd9ceb79025 /include/asm-sh/atomic-llsc.h | |
parent | 25326277d8d1393d1c66240e6255aca780f9e3eb (diff) |
sh: migrate to arch/sh/include/
This follows the sparc changes a439fe51a1f8eb087c22dd24d69cebae4a3addac.
Most of the moving about was done with Sam's directions at:
http://marc.info/?l=linux-sh&m=121724823706062&w=2
with subsequent hacking and fixups entirely my fault.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh/atomic-llsc.h')
-rw-r--r-- | include/asm-sh/atomic-llsc.h | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/include/asm-sh/atomic-llsc.h b/include/asm-sh/atomic-llsc.h deleted file mode 100644 index 4b00b78e3f4f..000000000000 --- a/include/asm-sh/atomic-llsc.h +++ /dev/null @@ -1,107 +0,0 @@ -#ifndef __ASM_SH_ATOMIC_LLSC_H -#define __ASM_SH_ATOMIC_LLSC_H - -/* - * To get proper branch prediction for the main line, we must branch - * forward to code at the end of this object's .text section, then - * branch back to restart the operation. - */ -static inline void atomic_add(int i, atomic_t *v) -{ - unsigned long tmp; - - __asm__ __volatile__ ( -"1: movli.l @%2, %0 ! atomic_add \n" -" add %1, %0 \n" -" movco.l %0, @%2 \n" -" bf 1b \n" - : "=&z" (tmp) - : "r" (i), "r" (&v->counter) - : "t"); -} - -static inline void atomic_sub(int i, atomic_t *v) -{ - unsigned long tmp; - - __asm__ __volatile__ ( -"1: movli.l @%2, %0 ! atomic_sub \n" -" sub %1, %0 \n" -" movco.l %0, @%2 \n" -" bf 1b \n" - : "=&z" (tmp) - : "r" (i), "r" (&v->counter) - : "t"); -} - -/* - * SH-4A note: - * - * We basically get atomic_xxx_return() for free compared with - * atomic_xxx(). movli.l/movco.l require r0 due to the instruction - * encoding, so the retval is automatically set without having to - * do any special work. - */ -static inline int atomic_add_return(int i, atomic_t *v) -{ - unsigned long temp; - - __asm__ __volatile__ ( -"1: movli.l @%2, %0 ! atomic_add_return \n" -" add %1, %0 \n" -" movco.l %0, @%2 \n" -" bf 1b \n" -" synco \n" - : "=&z" (temp) - : "r" (i), "r" (&v->counter) - : "t"); - - return temp; -} - -static inline int atomic_sub_return(int i, atomic_t *v) -{ - unsigned long temp; - - __asm__ __volatile__ ( -"1: movli.l @%2, %0 ! atomic_sub_return \n" -" sub %1, %0 \n" -" movco.l %0, @%2 \n" -" bf 1b \n" -" synco \n" - : "=&z" (temp) - : "r" (i), "r" (&v->counter) - : "t"); - - return temp; -} - -static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) -{ - unsigned long tmp; - - __asm__ __volatile__ ( -"1: movli.l @%2, %0 ! atomic_clear_mask \n" -" and %1, %0 \n" -" movco.l %0, @%2 \n" -" bf 1b \n" - : "=&z" (tmp) - : "r" (~mask), "r" (&v->counter) - : "t"); -} - -static inline void atomic_set_mask(unsigned int mask, atomic_t *v) -{ - unsigned long tmp; - - __asm__ __volatile__ ( -"1: movli.l @%2, %0 ! atomic_set_mask \n" -" or %1, %0 \n" -" movco.l %0, @%2 \n" -" bf 1b \n" - : "=&z" (tmp) - : "r" (mask), "r" (&v->counter) - : "t"); -} - -#endif /* __ASM_SH_ATOMIC_LLSC_H */ |