xref: /bionic/libc/kernel/arch-sh/asm/uaccess_32.h

/****************************************************************************
 ****************************************************************************
 ***
 ***   This header was automatically generated from a Linux kernel header
 ***   of the same name, to make information necessary for userspace to
 ***   call into the kernel available to libc.  It contains only constants,
 ***   structures, and macros generated from the original header, and thus,
 ***   contains no copyrightable information.
 ***
 ****************************************************************************
 ****************************************************************************/
#ifndef __ASM_SH_UACCESS_32_H
#define __ASM_SH_UACCESS_32_H

#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)

#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)); })

#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)

#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)

#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"); })

#endif