mirror of https://gitee.com/openkylin/linux.git
include/asm-x86/uaccess_64.h: checkpatch cleanups - formatting only
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Joe Perches
Ingo Molnar
parent
b1fcec7f22
commit
b896313e53
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@ -29,23 +29,27 @@
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#define get_fs() (current_thread_info()->addr_limit)
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#define set_fs(x) (current_thread_info()->addr_limit = (x))
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#define segment_eq(a,b) ((a).seg == (b).seg)
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#define segment_eq(a, b) ((a).seg == (b).seg)
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#define __addr_ok(addr) (!((unsigned long)(addr) & (current_thread_info()->addr_limit.seg)))
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#define __addr_ok(addr) (!((unsigned long)(addr) & \
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(current_thread_info()->addr_limit.seg)))
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/*
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* Uhhuh, this needs 65-bit arithmetic. We have a carry..
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*/
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#define __range_not_ok(addr,size) ({ \
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unsigned long flag,roksum; \
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__chk_user_ptr(addr); \
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asm("# range_ok\n\r" \
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"addq %3,%1 ; sbbq %0,%0 ; cmpq %1,%4 ; sbbq $0,%0" \
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:"=&r" (flag), "=r" (roksum) \
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:"1" (addr),"g" ((long)(size)),"g" (current_thread_info()->addr_limit.seg)); \
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flag; })
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#define __range_not_ok(addr, size) \
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({ \
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unsigned long flag, roksum; \
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__chk_user_ptr(addr); \
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asm("# range_ok\n\r" \
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"addq %3,%1 ; sbbq %0,%0 ; cmpq %1,%4 ; sbbq $0,%0" \
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: "=&r" (flag), "=r" (roksum) \
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: "1" (addr), "g" ((long)(size)), \
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"g" (current_thread_info()->addr_limit.seg)); \
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flag; \
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})
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#define access_ok(type, addr, size) (__range_not_ok(addr,size) == 0)
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#define access_ok(type, addr, size) (__range_not_ok(addr, size) == 0)
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/*
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* The exception table consists of pairs of addresses: the first is the
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@ -60,8 +64,7 @@
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* on our cache or tlb entries.
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*/
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struct exception_table_entry
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{
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struct exception_table_entry {
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unsigned long insn, fixup;
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};
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@ -84,23 +87,36 @@ extern int fixup_exception(struct pt_regs *regs);
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* accesses to the same area of user memory).
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*/
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#define __get_user_x(size,ret,x,ptr) \
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asm volatile("call __get_user_" #size \
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:"=a" (ret),"=d" (x) \
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:"c" (ptr) \
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:"r8")
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#define __get_user_x(size, ret, x, ptr) \
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asm volatile("call __get_user_" #size \
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: "=a" (ret),"=d" (x) \
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: "c" (ptr) \
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: "r8")
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/* Careful: we have to cast the result to the type of the pointer for sign reasons */
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#define get_user(x,ptr) \
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({ unsigned long __val_gu; \
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int __ret_gu; \
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/* Careful: we have to cast the result to the type of the pointer
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* for sign reasons */
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#define get_user(x, ptr) \
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({ \
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unsigned long __val_gu; \
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int __ret_gu; \
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__chk_user_ptr(ptr); \
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switch(sizeof (*(ptr))) { \
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case 1: __get_user_x(1,__ret_gu,__val_gu,ptr); break; \
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case 2: __get_user_x(2,__ret_gu,__val_gu,ptr); break; \
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case 4: __get_user_x(4,__ret_gu,__val_gu,ptr); break; \
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case 8: __get_user_x(8,__ret_gu,__val_gu,ptr); break; \
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default: __get_user_bad(); break; \
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switch (sizeof(*(ptr))) { \
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case 1: \
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__get_user_x(1, __ret_gu, __val_gu, ptr); \
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break; \
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case 2: \
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__get_user_x(2, __ret_gu, __val_gu, ptr); \
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break; \
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case 4: \
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__get_user_x(4, __ret_gu, __val_gu, ptr); \
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break; \
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case 8: \
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__get_user_x(8, __ret_gu, __val_gu, ptr); \
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break; \
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default: \
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__get_user_bad(); \
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break; \
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} \
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(x) = (__force typeof(*(ptr)))__val_gu; \
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__ret_gu; \
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@ -112,55 +128,73 @@ extern void __put_user_4(void);
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extern void __put_user_8(void);
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extern void __put_user_bad(void);
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#define __put_user_x(size,ret,x,ptr) \
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asm volatile("call __put_user_" #size \
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:"=a" (ret) \
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:"c" (ptr),"d" (x) \
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:"r8")
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#define __put_user_x(size, ret, x, ptr) \
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asm volatile("call __put_user_" #size \
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:"=a" (ret) \
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:"c" (ptr),"d" (x) \
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:"r8")
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#define put_user(x,ptr) \
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__put_user_check((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
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#define put_user(x, ptr) \
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__put_user_check((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
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#define __get_user(x,ptr) \
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__get_user_nocheck((x),(ptr),sizeof(*(ptr)))
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#define __put_user(x,ptr) \
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__put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
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#define __get_user(x, ptr) \
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__get_user_nocheck((x), (ptr), sizeof(*(ptr)))
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#define __put_user(x, ptr) \
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__put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
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#define __get_user_unaligned __get_user
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#define __put_user_unaligned __put_user
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#define __put_user_nocheck(x,ptr,size) \
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#define __put_user_nocheck(x, ptr, size) \
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({ \
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int __pu_err; \
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__put_user_size((x),(ptr),(size),__pu_err); \
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__put_user_size((x), (ptr), (size), __pu_err); \
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__pu_err; \
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})
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#define __put_user_check(x,ptr,size) \
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({ \
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int __pu_err; \
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typeof(*(ptr)) __user *__pu_addr = (ptr); \
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switch (size) { \
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case 1: __put_user_x(1,__pu_err,x,__pu_addr); break; \
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case 2: __put_user_x(2,__pu_err,x,__pu_addr); break; \
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case 4: __put_user_x(4,__pu_err,x,__pu_addr); break; \
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case 8: __put_user_x(8,__pu_err,x,__pu_addr); break; \
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default: __put_user_bad(); \
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} \
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__pu_err; \
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#define __put_user_check(x, ptr, size) \
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({ \
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int __pu_err; \
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typeof(*(ptr)) __user *__pu_addr = (ptr); \
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switch (size) { \
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case 1: \
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__put_user_x(1, __pu_err, x, __pu_addr); \
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break; \
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case 2: \
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__put_user_x(2, __pu_err, x, __pu_addr); \
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break; \
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case 4: \
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__put_user_x(4, __pu_err, x, __pu_addr); \
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break; \
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case 8: \
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__put_user_x(8, __pu_err, x, __pu_addr); \
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break; \
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default: \
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__put_user_bad(); \
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} \
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__pu_err; \
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})
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#define __put_user_size(x,ptr,size,retval) \
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#define __put_user_size(x, ptr, size, retval) \
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do { \
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retval = 0; \
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__chk_user_ptr(ptr); \
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switch (size) { \
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case 1: __put_user_asm(x,ptr,retval,"b","b","iq",-EFAULT); break;\
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case 2: __put_user_asm(x,ptr,retval,"w","w","ir",-EFAULT); break;\
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case 4: __put_user_asm(x,ptr,retval,"l","k","ir",-EFAULT); break;\
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case 8: __put_user_asm(x,ptr,retval,"q","","Zr",-EFAULT); break;\
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default: __put_user_bad(); \
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case 1: \
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__put_user_asm(x, ptr, retval, "b", "b", "iq", -EFAULT);\
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break; \
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case 2: \
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__put_user_asm(x, ptr, retval, "w", "w", "ir", -EFAULT);\
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break; \
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case 4: \
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__put_user_asm(x, ptr, retval, "l", "k", "ir", -EFAULT);\
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break; \
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case 8: \
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__put_user_asm(x, ptr, retval, "q", "", "Zr", -EFAULT); \
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break; \
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default: \
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__put_user_bad(); \
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} \
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} while (0)
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@ -174,23 +208,22 @@ struct __large_struct { unsigned long buf[100]; };
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* aliasing issues.
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*/
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#define __put_user_asm(x, addr, err, itype, rtype, ltype, errno) \
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asm volatile( \
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"1: mov"itype" %"rtype"1,%2\n" \
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"2:\n" \
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".section .fixup,\"ax\"\n" \
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"3: mov %3,%0\n" \
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" jmp 2b\n" \
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".previous\n" \
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_ASM_EXTABLE(1b,3b) \
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: "=r"(err) \
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: ltype (x), "m"(__m(addr)), "i"(errno), "0"(err))
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asm volatile("1: mov"itype" %"rtype"1,%2\n" \
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"2:\n" \
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".section .fixup, \"ax\"\n" \
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"3: mov %3,%0\n" \
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" jmp 2b\n" \
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".previous\n" \
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_ASM_EXTABLE(1b, 3b) \
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: "=r"(err) \
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: ltype (x), "m" (__m(addr)), "i" (errno), "0" (err))
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#define __get_user_nocheck(x,ptr,size) \
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#define __get_user_nocheck(x, ptr, size) \
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({ \
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int __gu_err; \
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unsigned long __gu_val; \
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__get_user_size(__gu_val,(ptr),(size),__gu_err); \
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__get_user_size(__gu_val, (ptr), (size), __gu_err); \
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(x) = (__force typeof(*(ptr)))__gu_val; \
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__gu_err; \
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})
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@ -201,31 +234,39 @@ extern int __get_user_4(void);
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extern int __get_user_8(void);
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extern int __get_user_bad(void);
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#define __get_user_size(x,ptr,size,retval) \
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#define __get_user_size(x, ptr, size, retval) \
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do { \
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retval = 0; \
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__chk_user_ptr(ptr); \
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switch (size) { \
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case 1: __get_user_asm(x,ptr,retval,"b","b","=q",-EFAULT); break;\
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case 2: __get_user_asm(x,ptr,retval,"w","w","=r",-EFAULT); break;\
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case 4: __get_user_asm(x,ptr,retval,"l","k","=r",-EFAULT); break;\
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case 8: __get_user_asm(x,ptr,retval,"q","","=r",-EFAULT); break;\
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default: (x) = __get_user_bad(); \
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case 1: \
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__get_user_asm(x, ptr, retval, "b", "b", "=q", -EFAULT);\
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break; \
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case 2: \
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__get_user_asm(x, ptr, retval, "w", "w", "=r", -EFAULT);\
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break; \
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case 4: \
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__get_user_asm(x, ptr, retval, "l", "k", "=r", -EFAULT);\
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break; \
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case 8: \
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__get_user_asm(x, ptr, retval, "q", "", "=r", -EFAULT); \
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break; \
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default: \
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(x) = __get_user_bad(); \
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} \
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} while (0)
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#define __get_user_asm(x, addr, err, itype, rtype, ltype, errno) \
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asm volatile( \
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"1: mov"itype" %2,%"rtype"1\n" \
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"2:\n" \
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".section .fixup,\"ax\"\n" \
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"3: mov %3,%0\n" \
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" xor"itype" %"rtype"1,%"rtype"1\n" \
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" jmp 2b\n" \
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".previous\n" \
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_ASM_EXTABLE(1b,3b) \
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: "=r"(err), ltype (x) \
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: "m"(__m(addr)), "i"(errno), "0"(err))
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asm volatile("1: mov"itype" %2,%"rtype"1\n" \
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"2:\n" \
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".section .fixup, \"ax\"\n" \
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"3: mov %3,%0\n" \
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" xor"itype" %"rtype"1,%"rtype"1\n" \
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" jmp 2b\n" \
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".previous\n" \
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_ASM_EXTABLE(1b, 3b) \
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: "=r" (err), ltype (x) \
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: "m" (__m(addr)), "i"(errno), "0"(err))
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/*
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* Copy To/From Userspace
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@ -244,110 +285,142 @@ copy_in_user(void __user *to, const void __user *from, unsigned len);
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static __always_inline __must_check
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int __copy_from_user(void *dst, const void __user *src, unsigned size)
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{
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{
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int ret = 0;
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if (!__builtin_constant_p(size))
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return copy_user_generic(dst,(__force void *)src,size);
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switch (size) {
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case 1:__get_user_asm(*(u8*)dst,(u8 __user *)src,ret,"b","b","=q",1);
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return copy_user_generic(dst, (__force void *)src, size);
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switch (size) {
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case 1:__get_user_asm(*(u8 *)dst, (u8 __user *)src,
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ret, "b", "b", "=q", 1);
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return ret;
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case 2:__get_user_asm(*(u16*)dst,(u16 __user *)src,ret,"w","w","=r",2);
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case 2:__get_user_asm(*(u16 *)dst, (u16 __user *)src,
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ret, "w", "w", "=r", 2);
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return ret;
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case 4:__get_user_asm(*(u32*)dst,(u32 __user *)src,ret,"l","k","=r",4);
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case 4:__get_user_asm(*(u32 *)dst, (u32 __user *)src,
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ret, "l", "k", "=r", 4);
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return ret;
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case 8:__get_user_asm(*(u64 *)dst, (u64 __user *)src,
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ret, "q", "", "=r", 8);
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return ret;
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case 8:__get_user_asm(*(u64*)dst,(u64 __user *)src,ret,"q","","=r",8);
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return ret;
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case 10:
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__get_user_asm(*(u64*)dst,(u64 __user *)src,ret,"q","","=r",16);
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if (unlikely(ret)) return ret;
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__get_user_asm(*(u16*)(8+(char*)dst),(u16 __user *)(8+(char __user *)src),ret,"w","w","=r",2);
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return ret;
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__get_user_asm(*(u64 *)dst, (u64 __user *)src,
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ret, "q", "", "=r", 16);
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if (unlikely(ret))
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return ret;
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__get_user_asm(*(u16 *)(8 + (char *)dst),
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(u16 __user *)(8 + (char __user *)src),
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ret, "w", "w", "=r", 2);
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return ret;
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case 16:
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__get_user_asm(*(u64*)dst,(u64 __user *)src,ret,"q","","=r",16);
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if (unlikely(ret)) return ret;
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__get_user_asm(*(u64*)(8+(char*)dst),(u64 __user *)(8+(char __user *)src),ret,"q","","=r",8);
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return ret;
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__get_user_asm(*(u64 *)dst, (u64 __user *)src,
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ret, "q", "", "=r", 16);
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if (unlikely(ret))
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return ret;
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__get_user_asm(*(u64 *)(8 + (char *)dst),
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(u64 __user *)(8 + (char __user *)src),
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ret, "q", "", "=r", 8);
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return ret;
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default:
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return copy_user_generic(dst,(__force void *)src,size);
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return copy_user_generic(dst, (__force void *)src, size);
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}
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}
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}
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static __always_inline __must_check
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int __copy_to_user(void __user *dst, const void *src, unsigned size)
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{
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{
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int ret = 0;
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if (!__builtin_constant_p(size))
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return copy_user_generic((__force void *)dst,src,size);
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switch (size) {
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case 1:__put_user_asm(*(u8*)src,(u8 __user *)dst,ret,"b","b","iq",1);
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return copy_user_generic((__force void *)dst, src, size);
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switch (size) {
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case 1:__put_user_asm(*(u8 *)src, (u8 __user *)dst,
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ret, "b", "b", "iq", 1);
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return ret;
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case 2:__put_user_asm(*(u16*)src,(u16 __user *)dst,ret,"w","w","ir",2);
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case 2:__put_user_asm(*(u16 *)src, (u16 __user *)dst,
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ret, "w", "w", "ir", 2);
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return ret;
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case 4:__put_user_asm(*(u32*)src,(u32 __user *)dst,ret,"l","k","ir",4);
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case 4:__put_user_asm(*(u32 *)src, (u32 __user *)dst,
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ret, "l", "k", "ir", 4);
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return ret;
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case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst,
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ret, "q", "", "ir", 8);
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return ret;
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case 8:__put_user_asm(*(u64*)src,(u64 __user *)dst,ret,"q","","ir",8);
|
||||
return ret;
|
||||
case 10:
|
||||
__put_user_asm(*(u64*)src,(u64 __user *)dst,ret,"q","","ir",10);
|
||||
if (unlikely(ret)) return ret;
|
||||
__put_user_asm(*(u64 *)src, (u64 __user *)dst,
|
||||
ret, "q", "", "ir", 10);
|
||||
if (unlikely(ret))
|
||||
return ret;
|
||||
asm("":::"memory");
|
||||
__put_user_asm(4[(u16*)src],4+(u16 __user *)dst,ret,"w","w","ir",2);
|
||||
return ret;
|
||||
__put_user_asm(4[(u16 *)src], 4 + (u16 __user *)dst,
|
||||
ret, "w", "w", "ir", 2);
|
||||
return ret;
|
||||
case 16:
|
||||
__put_user_asm(*(u64*)src,(u64 __user *)dst,ret,"q","","ir",16);
|
||||
if (unlikely(ret)) return ret;
|
||||
__put_user_asm(*(u64 *)src, (u64 __user *)dst,
|
||||
ret, "q", "", "ir", 16);
|
||||
if (unlikely(ret))
|
||||
return ret;
|
||||
asm("":::"memory");
|
||||
__put_user_asm(1[(u64*)src],1+(u64 __user *)dst,ret,"q","","ir",8);
|
||||
return ret;
|
||||
__put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst,
|
||||
ret, "q", "", "ir", 8);
|
||||
return ret;
|
||||
default:
|
||||
return copy_user_generic((__force void *)dst,src,size);
|
||||
return copy_user_generic((__force void *)dst, src, size);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static __always_inline __must_check
|
||||
int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
|
||||
{
|
||||
{
|
||||
int ret = 0;
|
||||
if (!__builtin_constant_p(size))
|
||||
return copy_user_generic((__force void *)dst,(__force void *)src,size);
|
||||
switch (size) {
|
||||
case 1: {
|
||||
return copy_user_generic((__force void *)dst,
|
||||
(__force void *)src, size);
|
||||
switch (size) {
|
||||
case 1: {
|
||||
u8 tmp;
|
||||
__get_user_asm(tmp,(u8 __user *)src,ret,"b","b","=q",1);
|
||||
__get_user_asm(tmp, (u8 __user *)src,
|
||||
ret, "b", "b", "=q", 1);
|
||||
if (likely(!ret))
|
||||
__put_user_asm(tmp,(u8 __user *)dst,ret,"b","b","iq",1);
|
||||
__put_user_asm(tmp, (u8 __user *)dst,
|
||||
ret, "b", "b", "iq", 1);
|
||||
return ret;
|
||||
}
|
||||
case 2: {
|
||||
case 2: {
|
||||
u16 tmp;
|
||||
__get_user_asm(tmp,(u16 __user *)src,ret,"w","w","=r",2);
|
||||
__get_user_asm(tmp, (u16 __user *)src,
|
||||
ret, "w", "w", "=r", 2);
|
||||
if (likely(!ret))
|
||||
__put_user_asm(tmp,(u16 __user *)dst,ret,"w","w","ir",2);
|
||||
__put_user_asm(tmp, (u16 __user *)dst,
|
||||
ret, "w", "w", "ir", 2);
|
||||
return ret;
|
||||
}
|
||||
|
||||
case 4: {
|
||||
case 4: {
|
||||
u32 tmp;
|
||||
__get_user_asm(tmp,(u32 __user *)src,ret,"l","k","=r",4);
|
||||
__get_user_asm(tmp, (u32 __user *)src,
|
||||
ret, "l", "k", "=r", 4);
|
||||
if (likely(!ret))
|
||||
__put_user_asm(tmp,(u32 __user *)dst,ret,"l","k","ir",4);
|
||||
__put_user_asm(tmp, (u32 __user *)dst,
|
||||
ret, "l", "k", "ir", 4);
|
||||
return ret;
|
||||
}
|
||||
case 8: {
|
||||
case 8: {
|
||||
u64 tmp;
|
||||
__get_user_asm(tmp,(u64 __user *)src,ret,"q","","=r",8);
|
||||
__get_user_asm(tmp, (u64 __user *)src,
|
||||
ret, "q", "", "=r", 8);
|
||||
if (likely(!ret))
|
||||
__put_user_asm(tmp,(u64 __user *)dst,ret,"q","","ir",8);
|
||||
__put_user_asm(tmp, (u64 __user *)dst,
|
||||
ret, "q", "", "ir", 8);
|
||||
return ret;
|
||||
}
|
||||
default:
|
||||
return copy_user_generic((__force void *)dst,(__force void *)src,size);
|
||||
return copy_user_generic((__force void *)dst,
|
||||
(__force void *)src, size);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
__must_check long
|
||||
__must_check long
|
||||
strncpy_from_user(char *dst, const char __user *src, long count);
|
||||
__must_check long
|
||||
__must_check long
|
||||
__strncpy_from_user(char *dst, const char __user *src, long count);
|
||||
__must_check long strnlen_user(const char __user *str, long n);
|
||||
__must_check long __strnlen_user(const char __user *str, long n);
|
||||
|
|
@ -355,7 +428,8 @@ __must_check long strlen_user(const char __user *str);
|
|||
__must_check unsigned long clear_user(void __user *mem, unsigned long len);
|
||||
__must_check unsigned long __clear_user(void __user *mem, unsigned long len);
|
||||
|
||||
__must_check long __copy_from_user_inatomic(void *dst, const void __user *src, unsigned size);
|
||||
__must_check long __copy_from_user_inatomic(void *dst, const void __user *src,
|
||||
unsigned size);
|
||||
|
||||
static __must_check __always_inline int
|
||||
__copy_to_user_inatomic(void __user *dst, const void *src, unsigned size)
|
||||
|
|
@ -364,15 +438,19 @@ __copy_to_user_inatomic(void __user *dst, const void *src, unsigned size)
|
|||
}
|
||||
|
||||
#define ARCH_HAS_NOCACHE_UACCESS 1
|
||||
extern long __copy_user_nocache(void *dst, const void __user *src, unsigned size, int zerorest);
|
||||
extern long __copy_user_nocache(void *dst, const void __user *src,
|
||||
unsigned size, int zerorest);
|
||||
|
||||
static inline int __copy_from_user_nocache(void *dst, const void __user *src, unsigned size)
|
||||
static inline int __copy_from_user_nocache(void *dst, const void __user *src,
|
||||
unsigned size)
|
||||
{
|
||||
might_sleep();
|
||||
return __copy_user_nocache(dst, src, size, 1);
|
||||
}
|
||||
|
||||
static inline int __copy_from_user_inatomic_nocache(void *dst, const void __user *src, unsigned size)
|
||||
static inline int __copy_from_user_inatomic_nocache(void *dst,
|
||||
const void __user *src,
|
||||
unsigned size)
|
||||
{
|
||||
return __copy_user_nocache(dst, src, size, 0);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue