user.h\bits\riscv64\arch - musl - musl - an implementation of the standard library for Linux-based systems

#include <signal.h>
#define ELF_NGREG 32
#define ELF_NFPREG 33
typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
typedef union __riscv_mc_fp_state elf_fpregset_t;