LOONGARCH_CSR_GSTAT
#define read_csr_gstat() csr_read64(LOONGARCH_CSR_GSTAT)
#define write_csr_gstat(val) csr_write64(val, LOONGARCH_CSR_GSTAT)
write_csr_gstat(csr->csrs[LOONGARCH_CSR_GSTAT]);
csr->csrs[LOONGARCH_CSR_GSTAT] = read_csr_gstat();