neorv32_cpu_cfu.h File Reference

CPU Core custom functions unit HW driver header file. More...

#include <stdint.h>

Go to the source code of this file.

Macros
Low-level CFU custom instruction prototypes ("intrinsics")
#define	neorv32_cfu_r3_instr(funct7, funct3, rs1, rs2)   CUSTOM_INSTR_R3_TYPE(funct7, rs2, rs1, funct3, 0b0001011)
#define	neorv32_cfu_r4_instr(funct3, rs1, rs2, rs3)   CUSTOM_INSTR_R4_TYPE(rs3, rs2, rs1, funct3, 0b0101011)
#define	neorv32_cfu_r5_instr_a(rs1, rs2, rs3, rs4)   CUSTOM_INSTR_R5_TYPE(rs4, rs3, rs2, rs1, 0b1011011)
#define	neorv32_cfu_r5_instr_b(rs1, rs2, rs3, rs4)   CUSTOM_INSTR_R5_TYPE(rs4, rs3, rs2, rs1, 0b1111011)

Functions
int	neorv32_cpu_cfu_available (void)

Detailed Description

CPU Core custom functions unit HW driver header file.

See also

https://stnolting.github.io/neorv32/sw/files.html

Macro Definition Documentation

neorv32_cfu_r3_instr

#define neorv32_cfu_r3_instr	(		funct7,
			funct3,
			rs1,
			rs2 )   CUSTOM_INSTR_R3_TYPE(funct7, rs2, rs1, funct3, 0b0001011)

R3-type CFU custom instruction (CUSTOM-0 opcode)

neorv32_cfu_r4_instr

#define neorv32_cfu_r4_instr	(		funct3,
			rs1,
			rs2,
			rs3 )   CUSTOM_INSTR_R4_TYPE(rs3, rs2, rs1, funct3, 0b0101011)

R4-type CFU custom instruction (CUSTOM-1 opcode)

neorv32_cfu_r5_instr_a

#define neorv32_cfu_r5_instr_a	(		rs1,
			rs2,
			rs3,
			rs4 )   CUSTOM_INSTR_R5_TYPE(rs4, rs3, rs2, rs1, 0b1011011)

R5-type CFU custom instruction A (CUSTOM-2 opcode)

neorv32_cfu_r5_instr_b

#define neorv32_cfu_r5_instr_b	(		rs1,
			rs2,
			rs3,
			rs4 )   CUSTOM_INSTR_R5_TYPE(rs4, rs3, rs2, rs1, 0b1111011)

R5-type CFU custom instruction B (CUSTOM-3 opcode)

Function Documentation

neorv32_cpu_cfu_available()

int neorv32_cpu_cfu_available

(

void

)

Check if custom functions unit was synthesized.

Returns

0 if CFU was not synthesized, 1 if CFU is available.