256 lines
9.2 KiB
C
256 lines
9.2 KiB
C
/* $OpenBSD: elf_abi.h,v 1.1 1998/01/28 11:14:41 pefo Exp $ */
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/*-
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* Copyright (c) 1996 Per Fogelstrom
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed under OpenBSD by
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* Per Fogelstrom.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* JNPR: elf.h,v 1.4 2006/12/02 09:53:40 katta
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* $FreeBSD$
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*
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*/
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#ifndef _MACHINE_ELF_H_
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#define _MACHINE_ELF_H_
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/* Information taken from MIPS ABI supplemental */
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#ifndef __ELF_WORD_SIZE
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#define __ELF_WORD_SIZE 32 /* Used by <sys/elf_generic.h> */
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#endif
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#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
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#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
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#include <sys/elf_generic.h>
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#define ELF_ARCH EM_MIPS
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#define ELF_MACHINE_OK(x) ((x) == EM_MIPS || (x) == EM_MIPS_RS4_BE)
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/* Architecture dependent Segment types - p_type */
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#define PT_MIPS_REGINFO 0x70000000 /* Register usage information */
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/* Architecture dependent d_tag field for Elf32_Dyn. */
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#define DT_MIPS_RLD_VERSION 0x70000001 /* Runtime Linker Interface ID */
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#define DT_MIPS_TIME_STAMP 0x70000002 /* Timestamp */
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#define DT_MIPS_ICHECKSUM 0x70000003 /* Cksum of ext str and com sizes */
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#define DT_MIPS_IVERSION 0x70000004 /* Version string (string tbl index) */
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#define DT_MIPS_FLAGS 0x70000005 /* Flags */
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#define DT_MIPS_BASE_ADDRESS 0x70000006 /* Segment base address */
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#define DT_MIPS_CONFLICT 0x70000008 /* Adr of .conflict section */
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#define DT_MIPS_LIBLIST 0x70000009 /* Address of .liblist section */
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#define DT_MIPS_LOCAL_GOTNO 0x7000000a /* Number of local .GOT entries */
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#define DT_MIPS_CONFLICTNO 0x7000000b /* Number of .conflict entries */
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#define DT_MIPS_LIBLISTNO 0x70000010 /* Number of .liblist entries */
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#define DT_MIPS_SYMTABNO 0x70000011 /* Number of .dynsym entries */
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#define DT_MIPS_UNREFEXTNO 0x70000012 /* First external DYNSYM */
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#define DT_MIPS_GOTSYM 0x70000013 /* First GOT entry in .dynsym */
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#define DT_MIPS_HIPAGENO 0x70000014 /* Number of GOT page table entries */
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#define DT_MIPS_RLD_MAP 0x70000016 /* Address of debug map pointer */
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#define DT_PROCNUM (DT_MIPS_RLD_MAP - DT_LOPROC + 1)
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/*
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* Legal values for e_flags field of Elf32_Ehdr.
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*/
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#define EF_MIPS_NOREORDER 1 /* .noreorder was used */
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#define EF_MIPS_PIC 2 /* Contains PIC code */
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#define EF_MIPS_CPIC 4 /* Uses PIC calling sequence */
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#define EF_MIPS_ARCH 0xf0000000 /* MIPS architecture level */
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/*
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* Mips special sections.
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*/
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#define SHN_MIPS_ACOMMON 0xff00 /* Allocated common symbols */
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#define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */
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#define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */
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/*
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* Legal values for sh_type field of Elf32_Shdr.
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*/
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#define SHT_MIPS_LIBLIST 0x70000000 /* Shared objects used in link */
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#define SHT_MIPS_CONFLICT 0x70000002 /* Conflicting symbols */
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#define SHT_MIPS_GPTAB 0x70000003 /* Global data area sizes */
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#define SHT_MIPS_UCODE 0x70000004 /* Reserved for SGI/MIPS compilers */
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#define SHT_MIPS_DEBUG 0x70000005 /* MIPS ECOFF debugging information */
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#define SHT_MIPS_REGINFO 0x70000006 /* Register usage information */
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/*
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* Legal values for sh_flags field of Elf32_Shdr.
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*/
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#define SHF_MIPS_GPREL 0x10000000 /* Must be part of global data area */
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/*
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* Entries found in sections of type SHT_MIPS_GPTAB.
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*/
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typedef union {
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struct {
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Elf32_Word gt_current_g_value; /* -G val used in compilation */
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Elf32_Word gt_unused; /* Not used */
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} gt_header; /* First entry in section */
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struct {
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Elf32_Word gt_g_value; /* If this val were used for -G */
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Elf32_Word gt_bytes; /* This many bytes would be used */
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} gt_entry; /* Subsequent entries in section */
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} Elf32_gptab;
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typedef union {
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struct {
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Elf64_Word gt_current_g_value; /* -G val used in compilation */
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Elf64_Word gt_unused; /* Not used */
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} gt_header; /* First entry in section */
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struct {
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Elf64_Word gt_g_value; /* If this val were used for -G */
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Elf64_Word gt_bytes; /* This many bytes would be used */
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} gt_entry; /* Subsequent entries in section */
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} Elf64_gptab;
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/*
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* Entry found in sections of type SHT_MIPS_REGINFO.
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*/
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typedef struct {
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Elf32_Word ri_gprmask; /* General registers used */
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Elf32_Word ri_cprmask[4]; /* Coprocessor registers used */
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Elf32_Sword ri_gp_value; /* $gp register value */
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} Elf32_RegInfo;
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typedef struct {
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Elf64_Word ri_gprmask; /* General registers used */
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Elf64_Word ri_cprmask[4]; /* Coprocessor registers used */
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Elf64_Sword ri_gp_value; /* $gp register value */
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} Elf64_RegInfo;
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/*
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* Mips relocations.
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*/
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#define R_MIPS_NONE 0 /* No reloc */
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#define R_MIPS_16 1 /* Direct 16 bit */
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#define R_MIPS_32 2 /* Direct 32 bit */
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#define R_MIPS_REL32 3 /* PC relative 32 bit */
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#define R_MIPS_26 4 /* Direct 26 bit shifted */
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#define R_MIPS_HI16 5 /* High 16 bit */
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#define R_MIPS_LO16 6 /* Low 16 bit */
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#define R_MIPS_GPREL16 7 /* GP relative 16 bit */
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#define R_MIPS_LITERAL 8 /* 16 bit literal entry */
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#define R_MIPS_GOT16 9 /* 16 bit GOT entry */
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#define R_MIPS_PC16 10 /* PC relative 16 bit */
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#define R_MIPS_CALL16 11 /* 16 bit GOT entry for function */
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#define R_MIPS_GPREL32 12 /* GP relative 32 bit */
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#define R_MIPS_GOTHI16 21 /* GOT HI 16 bit */
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#define R_MIPS_GOTLO16 22 /* GOT LO 16 bit */
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#define R_MIPS_CALLHI16 30 /* upper 16 bit GOT entry for function */
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#define R_MIPS_CALLLO16 31 /* lower 16 bit GOT entry for function */
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/*
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* These are from the 64-bit Irix ELF ABI
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*/
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#define R_MIPS_SHIFT5 16
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#define R_MIPS_SHIFT6 17
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#define R_MIPS_64 18
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#define R_MIPS_GOT_DISP 19
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#define R_MIPS_GOT_PAGE 20
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#define R_MIPS_GOT_OFST 21
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#define R_MIPS_GOT_HI16 22
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#define R_MIPS_GOT_LO16 23
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#define R_MIPS_SUB 24
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#define R_MIPS_INSERT_A 25
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#define R_MIPS_INSERT_B 26
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#define R_MIPS_DELETE 27
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#define R_MIPS_HIGHER 28
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#define R_MIPS_HIGHEST 29
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#define R_MIPS_SCN_DISP 32
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#define R_MIPS_REL16 33
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#define R_MIPS_ADD_IMMEDIATE 34
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#define R_MIPS_PJUMP 35
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#define R_MIPS_ERLGOT 36
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#define R_MIPS_max 37
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#define R_TYPE(name) __CONCAT(R_MIPS_,name)
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/* Define "machine" characteristics */
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#if __ELF_WORD_SIZE == 32
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#define ELF_TARG_CLASS ELFCLASS32
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#else
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#define ELF_TARG_CLASS ELFCLASS64
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#endif
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#ifdef __MIPSEB__
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#define ELF_TARG_DATA ELFDATA2MSB
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#else
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#define ELF_TARG_DATA ELFDATA2LSB
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#endif
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#define ELF_TARG_MACH EM_MIPS
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#define ELF_TARG_VER 1
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/*
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* Auxiliary vector entries for passing information to the interpreter.
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*
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* The i386 supplement to the SVR4 ABI specification names this "auxv_t",
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* but POSIX lays claim to all symbols ending with "_t".
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*/
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typedef struct { /* Auxiliary vector entry on initial stack */
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int a_type; /* Entry type. */
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union {
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int a_val; /* Integer value. */
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void *a_ptr; /* Address. */
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void (*a_fcn)(void); /* Function pointer (not used). */
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} a_un;
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} Elf32_Auxinfo;
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typedef struct { /* Auxiliary vector entry on initial stack */
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long a_type; /* Entry type. */
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union {
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long a_val; /* Integer value. */
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void *a_ptr; /* Address. */
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void (*a_fcn)(void); /* Function pointer (not used). */
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} a_un;
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} Elf64_Auxinfo;
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__ElfType(Auxinfo);
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/* Values for a_type. */
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#define AT_NULL 0 /* Terminates the vector. */
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#define AT_IGNORE 1 /* Ignored entry. */
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#define AT_EXECFD 2 /* File descriptor of program to load. */
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#define AT_PHDR 3 /* Program header of program already loaded. */
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#define AT_PHENT 4 /* Size of each program header entry. */
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#define AT_PHNUM 5 /* Number of program header entries. */
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#define AT_PAGESZ 6 /* Page size in bytes. */
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#define AT_BASE 7 /* Interpreter's base address. */
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#define AT_FLAGS 8 /* Flags (unused for i386). */
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#define AT_ENTRY 9 /* Where interpreter should transfer control. */
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/*
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* The following non-standard values are used in Linux ELF binaries.
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*/
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#define AT_NOTELF 10 /* Program is not ELF ?? */
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#define AT_UID 11 /* Real uid. */
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#define AT_EUID 12 /* Effective uid. */
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#define AT_GID 13 /* Real gid. */
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#define AT_EGID 14 /* Effective gid. */
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#define AT_COUNT 15 /* Count of defined aux entry types. */
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#endif /* !_MACHINE_ELF_H_ */
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