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dd3ef10ea2
This patch adds files related to VDSO and our VDSO only support rt_sigreturn. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
17 lines
329 B
C
17 lines
329 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/uaccess.h>
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static inline int setup_vdso_page(unsigned short *ptr)
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{
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int err = 0;
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/* movi r1, 127 */
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err |= __put_user(0x67f1, ptr + 0);
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/* addi r1, (139 - 127) */
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err |= __put_user(0x20b1, ptr + 1);
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/* trap 0 */
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err |= __put_user(0x0008, ptr + 2);
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return err;
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}
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