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authorPaul Mundt <lethal@linux-sh.org>2009-01-29 11:56:45 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-01-29 11:56:45 +0900
commite4e3c3f17fdb78282e3d9b4af7ec90d6e65798eb (patch)
treeb7018503c1b343e46b9a406855e64ec13bd62d6a /arch/sh/include
parentae5e6d05a606e05e054f816bd01e02f69d38d283 (diff)
parentc20f326a62c046ee958c3aa584f183201adb229f (diff)
Merge branch 'sh/stable-updates'
Diffstat (limited to 'arch/sh/include')
-rw-r--r--arch/sh/include/asm/mutex-llsc.h21
-rw-r--r--arch/sh/include/asm/syscall_32.h22
-rw-r--r--arch/sh/include/asm/syscall_64.h22
3 files changed, 15 insertions, 50 deletions
diff --git a/arch/sh/include/asm/mutex-llsc.h b/arch/sh/include/asm/mutex-llsc.h
index ee839ee58ac..090358a7e1b 100644
--- a/arch/sh/include/asm/mutex-llsc.h
+++ b/arch/sh/include/asm/mutex-llsc.h
@@ -21,38 +21,36 @@
static inline void
__mutex_fastpath_lock(atomic_t *count, void (*fail_fn)(atomic_t *))
{
- int __ex_flag, __res;
+ int __done, __res;
__asm__ __volatile__ (
"movli.l @%2, %0 \n"
"add #-1, %0 \n"
"movco.l %0, @%2 \n"
"movt %1 \n"
- : "=&z" (__res), "=&r" (__ex_flag)
+ : "=&z" (__res), "=&r" (__done)
: "r" (&(count)->counter)
: "t");
- __res |= !__ex_flag;
- if (unlikely(__res != 0))
+ if (unlikely(!__done || __res != 0))
fail_fn(count);
}
static inline int
__mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *))
{
- int __ex_flag, __res;
+ int __done, __res;
__asm__ __volatile__ (
"movli.l @%2, %0 \n"
"add #-1, %0 \n"
"movco.l %0, @%2 \n"
"movt %1 \n"
- : "=&z" (__res), "=&r" (__ex_flag)
+ : "=&z" (__res), "=&r" (__done)
: "r" (&(count)->counter)
: "t");
- __res |= !__ex_flag;
- if (unlikely(__res != 0))
+ if (unlikely(!__done || __res != 0))
__res = fail_fn(count);
return __res;
@@ -61,19 +59,18 @@ __mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *))
static inline void
__mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
{
- int __ex_flag, __res;
+ int __done, __res;
__asm__ __volatile__ (
"movli.l @%2, %0 \n\t"
"add #1, %0 \n\t"
"movco.l %0, @%2 \n\t"
"movt %1 \n\t"
- : "=&z" (__res), "=&r" (__ex_flag)
+ : "=&z" (__res), "=&r" (__done)
: "r" (&(count)->counter)
: "t");
- __res |= !__ex_flag;
- if (unlikely(__res <= 0))
+ if (unlikely(!__done || __res <= 0))
fail_fn(count);
}
diff --git a/arch/sh/include/asm/syscall_32.h b/arch/sh/include/asm/syscall_32.h
index 05a868a71ef..5bc34681d99 100644
--- a/arch/sh/include/asm/syscall_32.h
+++ b/arch/sh/include/asm/syscall_32.h
@@ -21,23 +21,10 @@ static inline void syscall_rollback(struct task_struct *task,
*/
}
-static inline bool syscall_has_error(struct pt_regs *regs)
-{
- return (regs->sr & 0x1) ? true : false;
-}
-static inline void syscall_set_error(struct pt_regs *regs)
-{
- regs->sr |= 0x1;
-}
-static inline void syscall_clear_error(struct pt_regs *regs)
-{
- regs->sr &= ~0x1;
-}
-
static inline long syscall_get_error(struct task_struct *task,
struct pt_regs *regs)
{
- return syscall_has_error(regs) ? regs->regs[0] : 0;
+ return IS_ERR_VALUE(regs->regs[0]) ? regs->regs[0] : 0;
}
static inline long syscall_get_return_value(struct task_struct *task,
@@ -50,13 +37,10 @@ static inline void syscall_set_return_value(struct task_struct *task,
struct pt_regs *regs,
int error, long val)
{
- if (error) {
- syscall_set_error(regs);
+ if (error)
regs->regs[0] = -error;
- } else {
- syscall_clear_error(regs);
+ else
regs->regs[0] = val;
- }
}
static inline void syscall_get_arguments(struct task_struct *task,
diff --git a/arch/sh/include/asm/syscall_64.h b/arch/sh/include/asm/syscall_64.h
index e1143b9784d..c3561ca72be 100644
--- a/arch/sh/include/asm/syscall_64.h
+++ b/arch/sh/include/asm/syscall_64.h
@@ -21,23 +21,10 @@ static inline void syscall_rollback(struct task_struct *task,
*/
}
-static inline bool syscall_has_error(struct pt_regs *regs)
-{
- return (regs->sr & 0x1) ? true : false;
-}
-static inline void syscall_set_error(struct pt_regs *regs)
-{
- regs->sr |= 0x1;
-}
-static inline void syscall_clear_error(struct pt_regs *regs)
-{
- regs->sr &= ~0x1;
-}
-
static inline long syscall_get_error(struct task_struct *task,
struct pt_regs *regs)
{
- return syscall_has_error(regs) ? regs->regs[9] : 0;
+ return IS_ERR_VALUE(regs->regs[9]) ? regs->regs[9] : 0;
}
static inline long syscall_get_return_value(struct task_struct *task,
@@ -50,13 +37,10 @@ static inline void syscall_set_return_value(struct task_struct *task,
struct pt_regs *regs,
int error, long val)
{
- if (error) {
- syscall_set_error(regs);
+ if (error)
regs->regs[9] = -error;
- } else {
- syscall_clear_error(regs);
+ else
regs->regs[9] = val;
- }
}
static inline void syscall_get_arguments(struct task_struct *task,