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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; } static __always_inline const struct vdso_rng_data *__arch_get_vdso_rng_data(void) { return &_loongarch_data.rng_data; } #endif /* !__ASSEMBLY__ */ #endif /* __ASM_VDSO_GETRANDOM_H */