1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12 #ifndef __ASM_SH_UACCESS_32_H 13 #define __ASM_SH_UACCESS_32_H 14 15 #define __get_user_size(x,ptr,size,retval) do { retval = 0; switch (size) { case 1: __get_user_asm(x, ptr, retval, "b"); break; case 2: __get_user_asm(x, ptr, retval, "w"); break; case 4: __get_user_asm(x, ptr, retval, "l"); break; default: __get_user_unknown(); break; } } while (0) 16 17 #define __get_user_asm(x, addr, err, insn) ({ __asm__ __volatile__( "1:\n\t" "mov." insn " %2, %1\n\t" "2:\n" ".section .fixup,\"ax\"\n" "3:\n\t" "mov #0, %1\n\t" "mov.l 4f, %0\n\t" "jmp @%0\n\t" " mov %3, %0\n\t" ".balign 4\n" "4: .long 2b\n\t" ".previous\n" ".section __ex_table,\"a\"\n\t" ".long 1b, 3b\n\t" ".previous" :"=&r" (err), "=&r" (x) :"m" (__m(addr)), "i" (-EFAULT), "0" (err)); }) 18 19 #define __put_user_size(x,ptr,size,retval) do { retval = 0; switch (size) { case 1: __put_user_asm(x, ptr, retval, "b"); break; case 2: __put_user_asm(x, ptr, retval, "w"); break; case 4: __put_user_asm(x, ptr, retval, "l"); break; case 8: __put_user_u64(x, ptr, retval); break; default: __put_user_unknown(); } } while (0) 20 21 #define __put_user_asm(x, addr, err, insn) do { __asm__ __volatile__ ( "1:\n\t" "mov." insn " %1, %2\n\t" "2:\n" ".section .fixup,\"ax\"\n" "3:\n\t" "mov.l 4f, %0\n\t" "jmp @%0\n\t" " mov %3, %0\n\t" ".balign 4\n" "4: .long 2b\n\t" ".previous\n" ".section __ex_table,\"a\"\n\t" ".long 1b, 3b\n\t" ".previous" : "=&r" (err) : "r" (x), "m" (__m(addr)), "i" (-EFAULT), "0" (err) : "memory" ); } while (0) 22 23 #define __put_user_u64(val,addr,retval) ({ __asm__ __volatile__( "1:\n\t" "mov.l %R1,%2\n\t" "mov.l %S1,%T2\n\t" "2:\n" ".section .fixup,\"ax\"\n" "3:\n\t" "mov.l 4f,%0\n\t" "jmp @%0\n\t" " mov %3,%0\n\t" ".balign 4\n" "4: .long 2b\n\t" ".previous\n" ".section __ex_table,\"a\"\n\t" ".long 1b, 3b\n\t" ".previous" : "=r" (retval) : "r" (val), "m" (__m(addr)), "i" (-EFAULT), "0" (retval) : "memory"); }) 24 25 #endif 26
