Differential D39489 Diff 120105 sys/cddl/dev/dtrace/riscv/instr_size.c

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				/*
				* SPDX-License-Identifier: CDDL 1.0
				*
				* Copyright 2023 Christos Margiolis <christos@FreeBSD.org>
				*/

				#include <machine/encoding.h>

				#include <dtrace.h>

				#define RVC_MASK 0x03

				int
				dtrace_instr_size(uint8_t *instr)
				{
				/* Detect compressed instructions. */
				if ((~(*instr) & RVC_MASK) == 0)
				return (INSN_SIZE);
				else
				return (INSN_C_SIZE);
				}