1/* $OpenBSD: exec.h,v 1.10 2022/10/28 15:07:25 kettenis Exp $ */
2
3/*
4 * Copyright (c) 1996-2004 Per Fogelstrom, Opsycon AB
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29#ifndef _MIPS64_EXEC_H_
30#define _MIPS64_EXEC_H_
31
32#define __LDPGSZ 16384
33
34#define ARCH_ELFSIZE 64
35#define ELF_TARG_CLASS ELFCLASS64
36
37#if defined(__MIPSEB__)
38#define ELF_TARG_DATA ELFDATA2MSB
39#else
40#define ELF_TARG_DATA ELFDATA2LSB
41#endif
42#define ELF_TARG_MACH EM_MIPS
43
44/* Information taken from MIPS ABI supplement */
45
46/* Architecture dependent Segment types - p_type */
47#define PT_MIPS_REGINFO 0x70000000 /* Register usage information */
48
49/* Architecture dependent d_tag field for Elf32_Dyn. */
50#define DT_MIPS_RLD_VERSION 0x70000001 /* Runtime Linker Interface ID */
51#define DT_MIPS_TIME_STAMP 0x70000002 /* Timestamp */
52#define DT_MIPS_ICHECKSUM 0x70000003 /* Cksum of ext. str. and com. sizes */
53#define DT_MIPS_IVERSION 0x70000004 /* Version string (string tbl index) */
54#define DT_MIPS_FLAGS 0x70000005 /* Flags */
55#define DT_MIPS_BASE_ADDRESS 0x70000006 /* Segment base address */
56#define DT_MIPS_CONFLICT 0x70000008 /* Adr of .conflict section */
57#define DT_MIPS_LIBLIST 0x70000009 /* Address of .liblist section */
58#define DT_MIPS_LOCAL_GOTNO 0x7000000a /* Number of local .GOT entries */
59#define DT_MIPS_CONFLICTNO 0x7000000b /* Number of .conflict entries */
60#define DT_MIPS_LIBLISTNO 0x70000010 /* Number of .liblist entries */
61#define DT_MIPS_SYMTABNO 0x70000011 /* Number of .dynsym entries */
62#define DT_MIPS_UNREFEXTNO 0x70000012 /* First external DYNSYM */
63#define DT_MIPS_GOTSYM 0x70000013 /* First GOT entry in .dynsym */
64#define DT_MIPS_HIPAGENO 0x70000014 /* Number of GOT page table entries */
65#define DT_MIPS_RLD_MAP 0x70000016 /* Address of debug map pointer */
66#define DT_MIPS_RLD_MAP_REL 0x70000035 /* Relative address of debug map ptr */
67
68#define DT_PROCNUM (DT_MIPS_RLD_MAP_REL - DT_LOPROC + 1)
69
70/*
71 * Legal values for e_flags field of Elf32_Ehdr.
72 */
73#define EF_MIPS_NOREORDER 0x00000001 /* .noreorder was used */
74#define EF_MIPS_PIC 0x00000002 /* Contains PIC code */
75#define EF_MIPS_CPIC 0x00000004 /* Uses PIC calling sequence */
76#define EF_MIPS_ABI2 0x00000020 /* -n32 on Irix 6 */
77#define EF_MIPS_32BITMODE 0x00000100 /* 64 bit in 32 bit mode... */
78#define EF_MIPS_ARCH 0xf0000000 /* MIPS architecture level */
79#define E_MIPS_ARCH_1 0x00000000
80#define E_MIPS_ARCH_2 0x10000000
81#define E_MIPS_ARCH_3 0x20000000
82#define E_MIPS_ARCH_4 0x30000000
83#define EF_MIPS_ABI 0x0000f000 /* ABI level */
84#define E_MIPS_ABI_NONE 0x00000000 /* ABI level not set */
85#define E_MIPS_ABI_O32 0x00001000
86#define E_MIPS_ABI_O64 0x00002000
87#define E_MIPS_ABI_EABI32 0x00004000
88#define E_MIPS_ABI_EABI64 0x00004000
89
90/*
91 * Mips special sections.
92 */
93#define SHN_MIPS_ACOMMON 0xff00 /* Allocated common symbols */
94#define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */
95#define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */
96
97/*
98 * Legal values for sh_type field of Elf32_Shdr.
99 */
100#define SHT_MIPS_LIBLIST 0x70000000 /* Shared objects used in link */
101#define SHT_MIPS_CONFLICT 0x70000002 /* Conflicting symbols */
102#define SHT_MIPS_GPTAB 0x70000003 /* Global data area sizes */
103#define SHT_MIPS_UCODE 0x70000004 /* Reserved for SGI/MIPS compilers */
104#define SHT_MIPS_DEBUG 0x70000005 /* MIPS ECOFF debugging information */
105#define SHT_MIPS_REGINFO 0x70000006 /* Register usage information */
106
107/*
108 * Legal values for sh_flags field of Elf32_Shdr.
109 */
110#define SHF_MIPS_GPREL 0x10000000 /* Must be part of global data area */
111
112#if 0
113/*
114 * Entries found in sections of type SHT_MIPS_GPTAB.
115 */
116typedef union {
117 struct {
118 Elf32_Word gt_current_g_value; /* -G val used in compilation */
119 Elf32_Word gt_unused; /* Not used */
120 } gt_header; /* First entry in section */
121 struct {
122 Elf32_Word gt_g_value; /* If this val were used for -G */
123 Elf32_Word gt_bytes; /* This many bytes would be used */
124 } gt_entry; /* Subsequent entries in section */
125} Elf32_gptab;
126
127/*
128 * Entry found in sections of type SHT_MIPS_REGINFO.
129 */
130typedef struct {
131 Elf32_Word ri_gprmask; /* General registers used */
132 Elf32_Word ri_cprmask[4]; /* Coprocessor registers used */
133 Elf32_Sword ri_gp_value; /* $gp register value */
134} Elf32_RegInfo;
135#endif
136
137#endif /* !_MIPS64_EXEC_H_ */