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_H HWCAP_ISA_BIT('h')
84#define HWCAP_ISA_G \
85 (HWCAP_ISA_I | HWCAP_ISA_M | HWCAP_ISA_A | HWCAP_ISA_F | HWCAP_ISA_D)
86#define HWCAP_ISA_B HWCAP_ISA_BIT('b')
87
88#endif /* !_MACHINE_ELF_H_ */