2 * Copyright (c) 1996-1997 John D. Polstra.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #ifndef _MACHINE_ELF_H_
30 #define _MACHINE_ELF_H_
33 * ELF definitions for the RISC-V architecture.
36 #include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
37 #include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
39 #define __ELF_WORD_SIZE 64 /* Used by <sys/elf_generic.h> */
40 #include <sys/elf_generic.h>
43 * Auxiliary vector entries for passing information to the interpreter.
46 typedef struct { /* Auxiliary vector entry on initial stack */
47 int a_type; /* Entry type. */
49 int a_val; /* Integer value. */
53 typedef struct { /* Auxiliary vector entry on initial stack */
54 long a_type; /* Entry type. */
56 long a_val; /* Integer value. */
57 void *a_ptr; /* Address. */
58 void (*a_fcn)(void); /* Function pointer (not used). */
64 #define ELF_ARCH EM_RISCV
66 #define ELF_MACHINE_OK(x) ((x) == (ELF_ARCH))
68 /* Values for a_type. */
69 #define AT_NULL 0 /* Terminates the vector. */
70 #define AT_IGNORE 1 /* Ignored entry. */
71 #define AT_EXECFD 2 /* File descriptor of program to load. */
72 #define AT_PHDR 3 /* Program header of program already loaded. */
73 #define AT_PHENT 4 /* Size of each program header entry. */
74 #define AT_PHNUM 5 /* Number of program header entries. */
75 #define AT_PAGESZ 6 /* Page size in bytes. */
76 #define AT_BASE 7 /* Interpreter's base address. */
77 #define AT_FLAGS 8 /* Flags (unused). */
78 #define AT_ENTRY 9 /* Where interpreter should transfer control. */
79 #define AT_NOTELF 10 /* Program is not ELF ?? */
80 #define AT_UID 11 /* Real uid. */
81 #define AT_EUID 12 /* Effective uid. */
82 #define AT_GID 13 /* Real gid. */
83 #define AT_EGID 14 /* Effective gid. */
84 #define AT_EXECPATH 15 /* Path to the executable. */
85 #define AT_CANARY 16 /* Canary for SSP */
86 #define AT_CANARYLEN 17 /* Length of the canary. */
87 #define AT_OSRELDATE 18 /* OSRELDATE. */
88 #define AT_NCPUS 19 /* Number of CPUs. */
89 #define AT_PAGESIZES 20 /* Pagesizes. */
90 #define AT_PAGESIZESLEN 21 /* Number of pagesizes. */
91 #define AT_TIMEKEEP 22 /* Pointer to timehands. */
92 #define AT_STACKPROT 23 /* Initial stack protection. */
93 #define AT_EHDRFLAGS 24 /* e_flags field from elf hdr */
94 #define AT_HWCAP 25 /* CPU feature flags. */
95 #define AT_HWCAP2 26 /* CPU feature flags 2. */
97 #define AT_COUNT 27 /* Count of defined aux entry types. */
99 /* Define "machine" characteristics */
100 #define ELF_TARG_CLASS ELFCLASS64
101 #define ELF_TARG_DATA ELFDATA2LSB
102 #define ELF_TARG_MACH EM_RISCV
103 #define ELF_TARG_VER 1
105 /* TODO: set correct value */
106 #define ET_DYN_LOAD_ADDR 0x100000
108 #endif /* !_MACHINE_ELF_H_ */