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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2024 Xi Ruoyao <xry111@xry111.site>. All Rights Reserved.
*/
#ifndef __ASM_VDSO_GETRANDOM_H
#define __ASM_VDSO_GETRANDOM_H
#ifndef __ASSEMBLY__
#include <asm/unistd.h>
#include <asm/vdso/vdso.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(
" syscall 0\n"
: "+r" (ret)
: "r" (nr), "r" (buffer), "r" (len), "r" (flags)
: "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8",
"memory");
return ret;
}
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_VDSO_GETRANDOM_H */
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