Differential D17952 Diff 50372 head/sys/riscv/include/riscvreg.h

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	})			})

	#define csr_read(csr) \			#define csr_read(csr) \
	({ u_long val; \			({ u_long val; \
	__asm __volatile("csrr %0, " #csr : "=r" (val)); \			__asm __volatile("csrr %0, " #csr : "=r" (val)); \
	val; \			val; \
	})			})

				#if __riscv_xlen == 32
				#define csr_read64(csr) \
				({ uint64_t val; \
				uint32_t high, low; \
				__asm __volatile("1: " \
				"csrr t0, " #csr "h\n" \
				"csrr %0, " #csr "\n" \
				"csrr %1, " #csr "h\n" \
				"bne t0, %1, 1b" \
				: "=r" (low), "=r" (high) \
				: \
				: "t0"); \
				val = (low \| ((uint64_t)high << 32)); \
				val; \
				})
				#else
				#define csr_read64(csr) ((uint64_t)csr_read(csr))
				#endif

	#endif /* !_MACHINE_RISCVREG_H_ */			#endif /* !_MACHINE_RISCVREG_H_ */