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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2025 MIPS.
*/
#ifndef _ASM_RISCV_VENDOR_EXTENSIONS_MIPS_H
#define _ASM_RISCV_VENDOR_EXTENSIONS_MIPS_H
#include <linux/types.h>
#define RISCV_ISA_VENDOR_EXT_XMIPSEXECTL 0
#ifndef __ASSEMBLER__
struct riscv_isa_vendor_ext_data_list;
extern struct riscv_isa_vendor_ext_data_list riscv_isa_vendor_ext_list_mips;
#endif
/* Extension specific instructions */
/*
* All of the xmipsexectl extension instructions are
* ‘hint’ encodings of the SLLI instruction,
* with rd = 0, rs1 = 0 and imm = 1 for IHB, imm = 3 for EHB,
* and imm = 5 for PAUSE.
* MIPS.PAUSE is an alternative opcode which is implemented to have the
* same behavior as PAUSE on some MIPS RISCV cores.
* MIPS.EHB clears all execution hazards before allowing
* any subsequent instructions to execute.
* MIPS.IHB clears all instruction hazards before
* allowing any subsequent instructions to fetch.
*/
#define MIPS_PAUSE ".4byte 0x00501013\n\t"
#define MIPS_EHB ".4byte 0x00301013\n\t"
#define MIPS_IHB ".4byte 0x00101013\n\t"
#endif // _ASM_RISCV_VENDOR_EXTENSIONS_MIPS_H
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