83 lines
5.3 KiB
C
83 lines
5.3 KiB
C
/****************************************************************************
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****************************************************************************
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***
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*** This header was automatically generated from a Linux kernel header
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*** of the same name, to make information necessary for userspace to
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*** call into the kernel available to libc. It contains only constants,
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*** structures, and macros generated from the original header, and thus,
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*** contains no copyrightable information.
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***
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****************************************************************************
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****************************************************************************/
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#ifndef __i386_UACCESS_H
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#define __i386_UACCESS_H
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#include <linux/errno.h>
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#include <linux/thread_info.h>
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#include <linux/prefetch.h>
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#include <linux/string.h>
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#include <asm/page.h>
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#define VERIFY_READ 0
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#define VERIFY_WRITE 1
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#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
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#define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFFUL)
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#define USER_DS MAKE_MM_SEG(PAGE_OFFSET)
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#define get_ds() (KERNEL_DS)
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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 __addr_ok(addr) ((unsigned long __force)(addr) < (current_thread_info()->addr_limit.seg))
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#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; })
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#define access_ok(type,addr,size) (likely(__range_ok(addr,size) == 0))
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struct exception_table_entry
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{
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unsigned long insn, fixup;
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};
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#define __get_user_x(size,ret,x,ptr) __asm__ __volatile__("call __get_user_" #size :"=a" (ret),"=d" (x) :"0" (ptr))
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#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; } (x) = (__typeof__(*(ptr)))__val_gu; __ret_gu; })
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#define __put_user_1(x, ptr) __asm__ __volatile__("call __put_user_1":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_2(x, ptr) __asm__ __volatile__("call __put_user_2":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_4(x, ptr) __asm__ __volatile__("call __put_user_4":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_8(x, ptr) __asm__ __volatile__("call __put_user_8":"=a" (__ret_pu):"A" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_X(x, ptr) __asm__ __volatile__("call __put_user_X":"=a" (__ret_pu):"c" (ptr))
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#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; })
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#define __get_user(x,ptr) __get_user_nocheck((x),(ptr),sizeof(*(ptr)))
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#define __put_user(x,ptr) __put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
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#define __put_user_nocheck(x,ptr,size) ({ long __pu_err; __put_user_size((x),(ptr),(size),__pu_err,-EFAULT); __pu_err; })
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#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" ".section __ex_table,\"a\"\n" " .align 4\n" " .long 1b,4b\n" " .long 2b,4b\n" ".previous" : "=r"(err) : "A" (x), "r" (addr), "i"(-EFAULT), "0"(err))
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#define __put_user_size(x,ptr,size,retval,errret) do { __typeof__(*(ptr)) __pus_tmp = x; retval = 0; if(unlikely(__copy_to_user_ll(ptr, &__pus_tmp, size) != 0)) retval = errret; } while (0)
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struct __large_struct { unsigned long buf[100]; };
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#define __m(x) (*(struct __large_struct __user *)(x))
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#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" ".section __ex_table,\"a\"\n" " .align 4\n" " .long 1b,3b\n" ".previous" : "=r"(err) : ltype (x), "m"(__m(addr)), "i"(errret), "0"(err))
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#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; })
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#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(); } } while (0)
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#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" ".section __ex_table,\"a\"\n" " .align 4\n" " .long 1b,3b\n" ".previous" : "=r"(err), ltype (x) : "m"(__m(addr)), "i"(errret), "0"(err))
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#define ARCH_HAS_NOCACHE_UACCESS
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#define strlen_user(str) strnlen_user(str, LONG_MAX)
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#endif
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