1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2025 Xi Ruoyao <xry111@xry111.site>. All Rights Reserved.
*/
#ifndef __ASM_VDSO_GETRANDOM_H
#define __ASM_VDSO_GETRANDOM_H
#ifndef __ASSEMBLER__
#include <asm/unistd.h>
static __always_inline ssize_t getrandom_syscall(void *_buffer, size_t _len, unsigned int _flags)
{
register long ret asm("a0");
register long nr asm("a7") = __NR_getrandom;
register void *buffer asm("a0") = _buffer;
register size_t len asm("a1") = _len;
register unsigned int flags asm("a2") = _flags;
asm volatile ("ecall\n"
: "=r" (ret)
: "r" (nr), "r" (buffer), "r" (len), "r" (flags)
: "memory");
return ret;
}
#endif /* !__ASSEMBLER__ */
#endif /* __ASM_VDSO_GETRANDOM_H */
|
