xref: /OK3568_Linux_fs/kernel/arch/csky/abiv2/inc/abi/vdso.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun 
3*4882a593Smuzhiyun #ifndef __ABI_CSKY_VDSO_H
4*4882a593Smuzhiyun #define __ABI_CSKY_VDSO_H
5*4882a593Smuzhiyun 
6*4882a593Smuzhiyun #include <linux/uaccess.h>
7*4882a593Smuzhiyun 
setup_vdso_page(unsigned short * ptr)8*4882a593Smuzhiyun static inline int setup_vdso_page(unsigned short *ptr)
9*4882a593Smuzhiyun {
10*4882a593Smuzhiyun 	int err = 0;
11*4882a593Smuzhiyun 
12*4882a593Smuzhiyun 	/* movi r7, 173 */
13*4882a593Smuzhiyun 	err |= __put_user(0xea07, ptr);
14*4882a593Smuzhiyun 	err |= __put_user(0x008b,      ptr+1);
15*4882a593Smuzhiyun 
16*4882a593Smuzhiyun 	/* trap 0 */
17*4882a593Smuzhiyun 	err |= __put_user(0xc000,   ptr+2);
18*4882a593Smuzhiyun 	err |= __put_user(0x2020,   ptr+3);
19*4882a593Smuzhiyun 
20*4882a593Smuzhiyun 	return err;
21*4882a593Smuzhiyun }
22*4882a593Smuzhiyun 
23*4882a593Smuzhiyun #endif /* __ABI_CSKY_STRING_H */
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