Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Paul Mundt |
66 |
83.54% |
1 |
20.00% |
| Michael S. Tsirkin |
11 |
13.92% |
2 |
40.00% |
| Greg Kroah-Hartman |
1 |
1.27% |
1 |
20.00% |
| Matt Fleming |
1 |
1.27% |
1 |
20.00% |
| Total |
79 |
|
5 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_CMPXCHG_LLSC_H
#define __ASM_SH_CMPXCHG_LLSC_H
static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
{
unsigned long retval;
unsigned long tmp;
__asm__ __volatile__ (
"1: \n\t"
"movli.l @%2, %0 ! xchg_u32 \n\t"
"mov %0, %1 \n\t"
"mov %3, %0 \n\t"
"movco.l %0, @%2 \n\t"
"bf 1b \n\t"
"synco \n\t"
: "=&z"(tmp), "=&r" (retval)
: "r" (m), "r" (val)
: "t", "memory"
);
return retval;
}
static inline unsigned long
__cmpxchg_u32(volatile u32 *m, unsigned long old, unsigned long new)
{
unsigned long retval;
unsigned long tmp;
__asm__ __volatile__ (
"1: \n\t"
"movli.l @%2, %0 ! __cmpxchg_u32 \n\t"
"mov %0, %1 \n\t"
"cmp/eq %1, %3 \n\t"
"bf 2f \n\t"
"mov %4, %0 \n\t"
"2: \n\t"
"movco.l %0, @%2 \n\t"
"bf 1b \n\t"
"synco \n\t"
: "=&z" (tmp), "=&r" (retval)
: "r" (m), "r" (old), "r" (new)
: "t", "memory"
);
return retval;
}
#include <asm/cmpxchg-xchg.h>
#endif /* __ASM_SH_CMPXCHG_LLSC_H */