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raspberrypi-kernel
提交 b1fcec7f 编写于 作者: J Joe Perches 提交者： Ingo Molnar
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include/asm-x86/uaccess_32.h: checkpatch cleanups - formatting only 

Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
上级 2d86e637
隐藏空白更改
内联 并排
Showing with 187 addition and 129 deletion
include/asm-x86/uaccess_32.h
浏览文件 @ b1fcec7f
......@@ -32,7 +32,7 @@
#define get_fs() (current_thread_info()->addr_limit)
#define set_fs(x) (current_thread_info()->addr_limit = (x))
#define segment_eq(a,b) ((a).seg == (b).seg)
#define segment_eq(a, b) ((a).seg == (b).seg)
/*
* movsl can be slow when source and dest are not both 8-byte aligned
......@@ -43,7 +43,9 @@ extern struct movsl_mask {
} ____cacheline_aligned_in_smp movsl_mask;
#endif
#define __addr_ok(addr) ((unsigned long __force)(addr) < (current_thread_info()->addr_limit.seg))
#define __addr_ok(addr) \
((unsigned long __force)(addr) < \
(current_thread_info()->addr_limit.seg))
/*
* Test whether a block of memory is a valid user space address.
......@@ -54,13 +56,16 @@ extern struct movsl_mask {
*
* This needs 33-bit arithmetic. We have a carry...
*/
#define __range_ok(addr,size) ({ \
unsigned long flag,roksum; \
__chk_user_ptr(addr); \
asm("addl %3,%1 ; sbbl %0,%0; cmpl %1,%4; sbbl $0,%0" \
:"=&r" (flag), "=r" (roksum) \
:"1" (addr),"g" ((int)(size)),"rm" (current_thread_info()->addr_limit.seg)); \
flag; })
#define __range_ok(addr, size) \
({ \
unsigned long flag, roksum; \
__chk_user_ptr(addr); \
asm("addl %3,%1 ; sbbl %0,%0; cmpl %1,%4; sbbl $0,%0" \
:"=&r" (flag), "=r" (roksum) \
:"1" (addr), "g" ((int)(size)), \
"rm" (current_thread_info()->addr_limit.seg)); \
flag; \
})
/**
* access_ok: - Checks if a user space pointer is valid
......@@ -81,7 +86,7 @@ extern struct movsl_mask {
* checks that the pointer is in the user space range - after calling
* this function, memory access functions may still return -EFAULT.
*/
#define access_ok(type,addr,size) (likely(__range_ok(addr,size) == 0))
#define access_ok(type, addr, size) (likely(__range_ok(addr, size) == 0))
/*
* The exception table consists of pairs of addresses: the first is the
......@@ -96,8 +101,7 @@ extern struct movsl_mask {
* on our cache or tlb entries.
*/
struct exception_table_entry
{
struct exception_table_entry {
unsigned long insn, fixup;
};
......@@ -122,13 +126,15 @@ extern void __get_user_1(void);
extern void __get_user_2(void);
extern void __get_user_4(void);
#define __get_user_x(size,ret,x,ptr) \
__asm__ __volatile__("call __get_user_" #size \
:"=a" (ret),"=d" (x) \
:"0" (ptr))
#define __get_user_x(size, ret, x, ptr) \
asm volatile("call __get_user_" #size \
:"=a" (ret),"=d" (x) \
:"0" (ptr))
/* Careful: we have to cast the result to the type of the pointer
* for sign reasons */
/* Careful: we have to cast the result to the type of the pointer for sign reasons */
/**
* get_user: - Get a simple variable from user space.
* @x: Variable to store result.
......@@ -146,15 +152,24 @@ extern void __get_user_4(void);
* Returns zero on success, or -EFAULT on error.
* On error, the variable @x is set to zero.
*/
#define get_user(x,ptr) \
({ int __ret_gu; \
#define get_user(x, ptr) \
({ \
int __ret_gu; \
unsigned long __val_gu; \
__chk_user_ptr(ptr); \
switch(sizeof (*(ptr))) { \
case 1: __get_user_x(1,__ret_gu,__val_gu,ptr); break; \
case 2: __get_user_x(2,__ret_gu,__val_gu,ptr); break; \
case 4: __get_user_x(4,__ret_gu,__val_gu,ptr); break; \
default: __get_user_x(X,__ret_gu,__val_gu,ptr); break; \
switch (sizeof(*(ptr))) { \
case 1: \
__get_user_x(1, __ret_gu, __val_gu, ptr); \
break; \
case 2: \
__get_user_x(2, __ret_gu, __val_gu, ptr); \
break; \
case 4: \
__get_user_x(4, __ret_gu, __val_gu, ptr); \
break; \
default: \
__get_user_x(X, __ret_gu, __val_gu, ptr); \
break; \
} \
(x) = (__typeof__(*(ptr)))__val_gu; \
__ret_gu; \
......@@ -171,11 +186,25 @@ extern void __put_user_2(void);
extern void __put_user_4(void);
extern void __put_user_8(void);
#define __put_user_1(x, ptr) __asm__ __volatile__("call __put_user_1":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
#define __put_user_2(x, ptr) __asm__ __volatile__("call __put_user_2":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
#define __put_user_4(x, ptr) __asm__ __volatile__("call __put_user_4":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
#define __put_user_8(x, ptr) __asm__ __volatile__("call __put_user_8":"=a" (__ret_pu):"A" ((typeof(*(ptr)))(x)), "c" (ptr))
#define __put_user_X(x, ptr) __asm__ __volatile__("call __put_user_X":"=a" (__ret_pu):"c" (ptr))
#define __put_user_1(x, ptr) \
asm volatile("call __put_user_1" : "=a" (__ret_pu) \
: "0" ((typeof(*(ptr)))(x)), "c" (ptr))
#define __put_user_2(x, ptr) \
asm volatile("call __put_user_2" : "=a" (__ret_pu) \
: "0" ((typeof(*(ptr)))(x)), "c" (ptr))
#define __put_user_4(x, ptr) \
asm volatile("call __put_user_4" : "=a" (__ret_pu) \
: "0" ((typeof(*(ptr)))(x)), "c" (ptr))
#define __put_user_8(x, ptr) \
asm volatile("call __put_user_8" : "=a" (__ret_pu) \
: "A" ((typeof(*(ptr)))(x)), "c" (ptr))
#define __put_user_X(x, ptr) \
asm volatile("call __put_user_X" : "=a" (__ret_pu) \
: "c" (ptr))
/**
* put_user: - Write a simple value into user space.
......@@ -195,32 +224,43 @@ extern void __put_user_8(void);
*/
#ifdef CONFIG_X86_WP_WORKS_OK
#define put_user(x,ptr) \
({ int __ret_pu; \
#define put_user(x, ptr) \
({ \
int __ret_pu; \
__typeof__(*(ptr)) __pu_val; \
__chk_user_ptr(ptr); \
__pu_val = x; \
switch(sizeof(*(ptr))) { \
case 1: __put_user_1(__pu_val, ptr); break; \
case 2: __put_user_2(__pu_val, ptr); break; \
case 4: __put_user_4(__pu_val, ptr); break; \
case 8: __put_user_8(__pu_val, ptr); break; \
default:__put_user_X(__pu_val, ptr); break; \
switch (sizeof(*(ptr))) { \
case 1: \
__put_user_1(__pu_val, ptr); \
break; \
case 2: \
__put_user_2(__pu_val, ptr); \
break; \
case 4: \
__put_user_4(__pu_val, ptr); \
break; \
case 8: \
__put_user_8(__pu_val, ptr); \
break; \
default: \
__put_user_X(__pu_val, ptr); \
break; \
} \
__ret_pu; \
})
#else
#define put_user(x,ptr) \
#define put_user(x, ptr) \
({ \
int __ret_pu; \
__typeof__(*(ptr)) __pus_tmp = x; \
__ret_pu=0; \
if(unlikely(__copy_to_user_ll(ptr, &__pus_tmp, \
sizeof(*(ptr))) != 0)) \
__ret_pu=-EFAULT; \
__ret_pu; \
})
int __ret_pu; \
__typeof__(*(ptr))__pus_tmp = x; \
__ret_pu = 0; \
if (unlikely(__copy_to_user_ll(ptr, &__pus_tmp, \
sizeof(*(ptr))) != 0)) \
__ret_pu = -EFAULT; \
__ret_pu; \
})
#endif
......@@ -245,8 +285,8 @@ extern void __put_user_8(void);
* Returns zero on success, or -EFAULT on error.
* On error, the variable @x is set to zero.
*/
#define __get_user(x,ptr) \
__get_user_nocheck((x),(ptr),sizeof(*(ptr)))
#define __get_user(x, ptr) \
__get_user_nocheck((x), (ptr), sizeof(*(ptr)))
/**
......@@ -268,54 +308,62 @@ extern void __put_user_8(void);
*
* Returns zero on success, or -EFAULT on error.
*/
#define __put_user(x,ptr) \
__put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
#define __put_user(x, ptr) \
__put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
#define __put_user_nocheck(x,ptr,size) \
#define __put_user_nocheck(x, ptr, size) \
({ \
long __pu_err; \
__put_user_size((x),(ptr),(size),__pu_err,-EFAULT); \
__put_user_size((x), (ptr), (size), __pu_err, -EFAULT); \
__pu_err; \
})
#define __put_user_u64(x, addr, err) \
__asm__ __volatile__( \
"1: movl %%eax,0(%2)\n" \
"2: movl %%edx,4(%2)\n" \
"3:\n" \
".section .fixup,\"ax\"\n" \
"4: movl %3,%0\n" \
" jmp 3b\n" \
".previous\n" \
_ASM_EXTABLE(1b,4b) \
_ASM_EXTABLE(2b,4b) \
: "=r"(err) \
: "A" (x), "r" (addr), "i"(-EFAULT), "0"(err))
#define __put_user_u64(x, addr, err) \
asm volatile("1: movl %%eax,0(%2)\n" \
"2: movl %%edx,4(%2)\n" \
"3:\n" \
".section .fixup,\"ax\"\n" \
"4: movl %3,%0\n" \
" jmp 3b\n" \
".previous\n" \
_ASM_EXTABLE(1b, 4b) \
_ASM_EXTABLE(2b, 4b) \
: "=r" (err) \
: "A" (x), "r" (addr), "i" (-EFAULT), "0" (err))
#ifdef CONFIG_X86_WP_WORKS_OK
#define __put_user_size(x,ptr,size,retval,errret) \
#define __put_user_size(x, ptr, size, retval, errret) \
do { \
retval = 0; \
__chk_user_ptr(ptr); \
switch (size) { \
case 1: __put_user_asm(x,ptr,retval,"b","b","iq",errret);break; \
case 2: __put_user_asm(x,ptr,retval,"w","w","ir",errret);break; \
case 4: __put_user_asm(x,ptr,retval,"l","","ir",errret); break; \
case 8: __put_user_u64((__typeof__(*ptr))(x),ptr,retval); break;\
default: __put_user_bad(); \
case 1: \
__put_user_asm(x, ptr, retval, "b", "b", "iq", errret); \
break; \
case 2: \
__put_user_asm(x, ptr, retval, "w", "w", "ir", errret); \
break; \
case 4: \
__put_user_asm(x, ptr, retval, "l", "", "ir", errret); \
break; \
case 8: \
__put_user_u64((__typeof__(*ptr))(x), ptr, retval); \
break; \
default: \
__put_user_bad(); \
} \
} while (0)
#else
#define __put_user_size(x,ptr,size,retval,errret) \
#define __put_user_size(x, ptr, size, retval, errret) \
do { \
__typeof__(*(ptr)) __pus_tmp = x; \
__typeof__(*(ptr))__pus_tmp = x; \
retval = 0; \
\
if(unlikely(__copy_to_user_ll(ptr, &__pus_tmp, size) != 0)) \
if (unlikely(__copy_to_user_ll(ptr, &__pus_tmp, size) != 0)) \
retval = errret; \
} while (0)
......@@ -329,65 +377,70 @@ struct __large_struct { unsigned long buf[100]; };
* aliasing issues.
*/
#define __put_user_asm(x, addr, err, itype, rtype, ltype, errret) \
__asm__ __volatile__( \
"1: mov"itype" %"rtype"1,%2\n" \
"2:\n" \
".section .fixup,\"ax\"\n" \
"3: movl %3,%0\n" \
" jmp 2b\n" \
".previous\n" \
_ASM_EXTABLE(1b,3b) \
: "=r"(err) \
: ltype (x), "m"(__m(addr)), "i"(errret), "0"(err))
#define __get_user_nocheck(x,ptr,size) \
({ \
long __gu_err; \
unsigned long __gu_val; \
__get_user_size(__gu_val,(ptr),(size),__gu_err,-EFAULT);\
(x) = (__typeof__(*(ptr)))__gu_val; \
__gu_err; \
asm volatile("1: mov"itype" %"rtype"1,%2\n" \
"2:\n" \
".section .fixup,\"ax\"\n" \
"3: movl %3,%0\n" \
" jmp 2b\n" \
".previous\n" \
_ASM_EXTABLE(1b, 3b) \
: "=r"(err) \
: ltype (x), "m" (__m(addr)), "i" (errret), "0" (err))
#define __get_user_nocheck(x, ptr, size) \
({ \
long __gu_err; \
unsigned long __gu_val; \
__get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT); \
(x) = (__typeof__(*(ptr)))__gu_val; \
__gu_err; \
})
extern long __get_user_bad(void);
#define __get_user_size(x,ptr,size,retval,errret) \
#define __get_user_size(x, ptr, size, retval, errret) \
do { \
retval = 0; \
__chk_user_ptr(ptr); \
switch (size) { \
case 1: __get_user_asm(x,ptr,retval,"b","b","=q",errret);break; \
case 2: __get_user_asm(x,ptr,retval,"w","w","=r",errret);break; \
case 4: __get_user_asm(x,ptr,retval,"l","","=r",errret);break; \
default: (x) = __get_user_bad(); \
case 1: \
__get_user_asm(x, ptr, retval, "b", "b", "=q", errret); \
break; \
case 2: \
__get_user_asm(x, ptr, retval, "w", "w", "=r", errret); \
break; \
case 4: \
__get_user_asm(x, ptr, retval, "l", "", "=r", errret); \
break; \
default: \
(x) = __get_user_bad(); \
} \
} while (0)
#define __get_user_asm(x, addr, err, itype, rtype, ltype, errret) \
__asm__ __volatile__( \
"1: mov"itype" %2,%"rtype"1\n" \
"2:\n" \
".section .fixup,\"ax\"\n" \
"3: movl %3,%0\n" \
" xor"itype" %"rtype"1,%"rtype"1\n" \
" jmp 2b\n" \
".previous\n" \
_ASM_EXTABLE(1b,3b) \
: "=r"(err), ltype (x) \
: "m"(__m(addr)), "i"(errret), "0"(err))
unsigned long __must_check __copy_to_user_ll(void __user *to,
const void *from, unsigned long n);
unsigned long __must_check __copy_from_user_ll(void *to,
const void __user *from, unsigned long n);
unsigned long __must_check __copy_from_user_ll_nozero(void *to,
const void __user *from, unsigned long n);
unsigned long __must_check __copy_from_user_ll_nocache(void *to,
const void __user *from, unsigned long n);
unsigned long __must_check __copy_from_user_ll_nocache_nozero(void *to,
const void __user *from, unsigned long n);
asm volatile("1: mov"itype" %2,%"rtype"1\n" \
"2:\n" \
".section .fixup,\"ax\"\n" \
"3: movl %3,%0\n" \
" xor"itype" %"rtype"1,%"rtype"1\n" \
" jmp 2b\n" \
".previous\n" \
_ASM_EXTABLE(1b, 3b) \
: "=r" (err), ltype (x) \
: "m" (__m(addr)), "i" (errret), "0" (err))
unsigned long __must_check __copy_to_user_ll
(void __user *to, const void *from, unsigned long n);
unsigned long __must_check __copy_from_user_ll
(void *to, const void __user *from, unsigned long n);
unsigned long __must_check __copy_from_user_ll_nozero
(void *to, const void __user *from, unsigned long n);
unsigned long __must_check __copy_from_user_ll_nocache
(void *to, const void __user *from, unsigned long n);
unsigned long __must_check __copy_from_user_ll_nocache_nozero
(void *to, const void __user *from, unsigned long n);
/**
* __copy_to_user_inatomic: - Copy a block of data into user space, with less checking.
......@@ -416,13 +469,16 @@ __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n)
switch (n) {
case 1:
__put_user_size(*(u8 *)from, (u8 __user *)to, 1, ret, 1);
__put_user_size(*(u8 *)from, (u8 __user *)to,
1, ret, 1);
return ret;
case 2:
__put_user_size(*(u16 *)from, (u16 __user *)to, 2, ret, 2);
__put_user_size(*(u16 *)from, (u16 __user *)to,
2, ret, 2);
return ret;
case 4:
__put_user_size(*(u32 *)from, (u32 __user *)to, 4, ret, 4);
__put_user_size(*(u32 *)from, (u32 __user *)to,
4, ret, 4);
return ret;
}
}
......@@ -545,19 +601,21 @@ static __always_inline unsigned long __copy_from_user_nocache(void *to,
}
static __always_inline unsigned long
__copy_from_user_inatomic_nocache(void *to, const void __user *from, unsigned long n)
__copy_from_user_inatomic_nocache(void *to, const void __user *from,
unsigned long n)
{
return __copy_from_user_ll_nocache_nozero(to, from, n);
}
unsigned long __must_check copy_to_user(void __user *to,
const void *from, unsigned long n);
const void *from, unsigned long n);
unsigned long __must_check copy_from_user(void *to,
const void __user *from, unsigned long n);
const void __user *from,
unsigned long n);
long __must_check strncpy_from_user(char *dst, const char __user *src,
long count);
long count);
long __must_check __strncpy_from_user(char *dst,
const char __user *src, long count);
const char __user *src, long count);
/**
* strlen_user: - Get the size of a string in user space.
......
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