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527b5bae
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体验新版 GitCode,发现更多精彩内容 >>
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527b5bae
编写于
12月 26, 2016
作者:
A
Al Viro
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电子邮件补丁
差异文件
powerpc: switch to extable.h
Signed-off-by:
N
Al Viro
<
viro@zeniv.linux.org.uk
>
上级
d597580d
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
30 addition
and
25 deletion
+30
-25
arch/powerpc/include/asm/extable.h
arch/powerpc/include/asm/extable.h
+29
-0
arch/powerpc/include/asm/uaccess.h
arch/powerpc/include/asm/uaccess.h
+1
-25
未找到文件。
arch/powerpc/include/asm/extable.h
0 → 100644
浏览文件 @
527b5bae
#ifndef _ARCH_POWERPC_EXTABLE_H
#define _ARCH_POWERPC_EXTABLE_H
/*
* The exception table consists of pairs of relative addresses: the first is
* the address of an instruction that is allowed to fault, and the second is
* the address at which the program should continue. No registers are
* modified, so it is entirely up to the continuation code to figure out what
* to do.
*
* All the routines below use bits of fixup code that are out of line with the
* main instruction path. This means when everything is well, we don't even
* have to jump over them. Further, they do not intrude on our cache or tlb
* entries.
*/
#define ARCH_HAS_RELATIVE_EXTABLE
struct
exception_table_entry
{
int
insn
;
int
fixup
;
};
static
inline
unsigned
long
extable_fixup
(
const
struct
exception_table_entry
*
x
)
{
return
(
unsigned
long
)
&
x
->
fixup
+
x
->
fixup
;
}
#endif
arch/powerpc/include/asm/uaccess.h
浏览文件 @
527b5bae
...
...
@@ -5,6 +5,7 @@
#include <asm/ppc_asm.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/extable.h>
/*
* The fs value determines whether argument validity checking should be
...
...
@@ -55,31 +56,6 @@
(__chk_user_ptr(addr), \
__access_ok((__force unsigned long)(addr), (size), get_fs()))
/*
* The exception table consists of pairs of relative addresses: the first is
* the address of an instruction that is allowed to fault, and the second is
* the address at which the program should continue. No registers are
* modified, so it is entirely up to the continuation code to figure out what
* to do.
*
* All the routines below use bits of fixup code that are out of line with the
* main instruction path. This means when everything is well, we don't even
* have to jump over them. Further, they do not intrude on our cache or tlb
* entries.
*/
#define ARCH_HAS_RELATIVE_EXTABLE
struct
exception_table_entry
{
int
insn
;
int
fixup
;
};
static
inline
unsigned
long
extable_fixup
(
const
struct
exception_table_entry
*
x
)
{
return
(
unsigned
long
)
&
x
->
fixup
+
x
->
fixup
;
}
/*
* These are the main single-value transfer routines. They automatically
* use the right size if we just have the right pointer type.
...
...
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