1/*-
 2 * Copyright (c) 1996-1997 John D. Polstra.
 3 * All rights reserved.
 4 *
 5 * Redistribution and use in source and binary forms, with or without
 6 * modification, are permitted provided that the following conditions
 7 * are met:
 8 * 1. Redistributions of source code must retain the above copyright
 9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#ifndef	_MACHINE_ELF_H_
28#define	_MACHINE_ELF_H_
29
30/*
31 * ELF definitions for the RISC-V architecture.
32 */
33
34#include <sys/elf32.h>	/* Definitions common to all 32 bit architectures. */
35#include <sys/elf64.h>	/* Definitions common to all 64 bit architectures. */
36
37#define	__ELF_WORD_SIZE	64	/* Used by <sys/elf_generic.h> */
38#include <sys/elf_generic.h>
39
40/*
41 * Auxiliary vector entries for passing information to the interpreter.
42 */
43
44typedef struct {	/* Auxiliary vector entry on initial stack */
45	int	a_type;			/* Entry type. */
46	union {
47		int	a_val;		/* Integer value. */
48	} a_un;
49} Elf32_Auxinfo;
50
51typedef struct {	/* Auxiliary vector entry on initial stack */
52	long	a_type;			/* Entry type. */
53	union {
54		long	a_val;		/* Integer value. */
55		void	*a_ptr;		/* Address. */
56		void	(*a_fcn)(void);	/* Function pointer (not used). */
57	} a_un;
58} Elf64_Auxinfo;
59
60__ElfType(Auxinfo);
61
62#define	ELF_ARCH	EM_RISCV
63
64#define	ELF_MACHINE_OK(x) ((x) == (ELF_ARCH))
65
66/* Define "machine" characteristics */
67#define	ELF_TARG_CLASS	ELFCLASS64
68#define	ELF_TARG_DATA	ELFDATA2LSB
69#define	ELF_TARG_MACH	EM_RISCV
70#define	ELF_TARG_VER	1
71
72/* TODO: set correct value */
73#define	ET_DYN_LOAD_ADDR 0x100000
74
75/* Flags passed in AT_HWCAP */
76#define	HWCAP_ISA_BIT(c)	(1 << ((c) - 'a'))
77#define	HWCAP_ISA_I		HWCAP_ISA_BIT('i')
78#define	HWCAP_ISA_M		HWCAP_ISA_BIT('m')
79#define	HWCAP_ISA_A		HWCAP_ISA_BIT('a')
80#define	HWCAP_ISA_F		HWCAP_ISA_BIT('f')
81#define	HWCAP_ISA_D		HWCAP_ISA_BIT('d')
82#define	HWCAP_ISA_C		HWCAP_ISA_BIT('c')
83#define	HWCAP_ISA_G		\
84    (HWCAP_ISA_I | HWCAP_ISA_M | HWCAP_ISA_A | HWCAP_ISA_F | HWCAP_ISA_D)
85
86#endif /* !_MACHINE_ELF_H_ */