neorv32_intrinsics.h File Reference

Prototypes for custom RISC-V instructions ("intrinsics"). Based on the ".insn" pseudo directive: https://sourceware.org/binutils/docs/as/RISC_002dV_002dFormats.html. More...

#include <neorv32.h>
#include <stdint.h>

Go to the source code of this file.

Macros
RISC-V opcodes for custom instructions / NEORV32 CFU
#define	RISCV_OPCODE_CUSTOM0   0b0001011
#define	RISCV_OPCODE_CUSTOM1   0b0101011

Functions
uint32_t	RISCV_INSTR_R_TYPE (const int opcode, const int funct3, const int funct7, uint32_t rs1, uint32_t rs2)
uint32_t	RISCV_INSTR_I_TYPE (const int opcode, const int funct3, uint32_t rs1, const int imm12)

Detailed Description

Prototypes for custom RISC-V instructions ("intrinsics"). Based on the ".insn" pseudo directive: https://sourceware.org/binutils/docs/as/RISC_002dV_002dFormats.html.

Function Documentation

RISCV_INSTR_I_TYPE()

uint32_t RISCV_INSTR_I_TYPE ( const int opcode, const int funct3, uint32_t rs1, const int imm12 )

inline

Emit a RISC-V I-type instruction.

Parameters

[in]	opcode	Opcode (7-bit).
[in]	funct3	Function select (3-bit).
[in]	rs1	Register source operand 1 (32-bit).
[in]	imm12	Immediate source operand (12-bit).

Returns

Instruction result (destination register rd, 32-bit).

RISCV_INSTR_R_TYPE()

uint32_t RISCV_INSTR_R_TYPE ( const int opcode, const int funct3, const int funct7, uint32_t rs1, uint32_t rs2 )

inline

Emit a RISC-V R-type instruction.

Parameters

[in]	opcode	Opcode (7-bit).
[in]	funct3	Function select (3-bit).
[in]	funct7	Function select (7-bit).
[in]	rs1	Register source operand 1 (32-bit).
[in]	rs2	Register source operand 2 (32-bit).

Returns

Instruction result (destination register rd, 32-bit).