提交 5a2b59d3 编写于 作者: D David S. Miller

sparc64: Fix constraints on swab helpers.

We are reading the memory location, so we have to have a memory
constraint in there purely for the sake of showing the data flow
to the compiler.
Reported-by: NMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 1a17fdc4
......@@ -9,9 +9,9 @@ static inline __u16 __arch_swab16p(const __u16 *addr)
{
__u16 ret;
__asm__ __volatile__ ("lduha [%1] %2, %0"
__asm__ __volatile__ ("lduha [%2] %3, %0"
: "=r" (ret)
: "r" (addr), "i" (ASI_PL));
: "m" (*addr), "r" (addr), "i" (ASI_PL));
return ret;
}
#define __arch_swab16p __arch_swab16p
......@@ -20,9 +20,9 @@ static inline __u32 __arch_swab32p(const __u32 *addr)
{
__u32 ret;
__asm__ __volatile__ ("lduwa [%1] %2, %0"
__asm__ __volatile__ ("lduwa [%2] %3, %0"
: "=r" (ret)
: "r" (addr), "i" (ASI_PL));
: "m" (*addr), "r" (addr), "i" (ASI_PL));
return ret;
}
#define __arch_swab32p __arch_swab32p
......@@ -31,9 +31,9 @@ static inline __u64 __arch_swab64p(const __u64 *addr)
{
__u64 ret;
__asm__ __volatile__ ("ldxa [%1] %2, %0"
__asm__ __volatile__ ("ldxa [%2] %3, %0"
: "=r" (ret)
: "r" (addr), "i" (ASI_PL));
: "m" (*addr), "r" (addr), "i" (ASI_PL));
return ret;
}
#define __arch_swab64p __arch_swab64p
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册