Home | History | Annotate | Download | only in machine
      1 /*	$OpenBSD: exec.h,v 1.1 2004/10/18 19:05:36 grange 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	4096
     33 
     34 /*
     35  *  Define what exec "formats" we should handle.
     36  */
     37 #define NATIVE_EXEC_ELF
     38 #define NATIVE_ELFSIZE 64
     39 #define	EXEC_SCRIPT
     40 
     41 /*
     42  *  If included from sys/exec.h define kernels ELF format.
     43  */
     44 #ifdef __LP64__
     45 #define	ARCH_ELFSIZE 64
     46 #define DB_ELFSIZE 64
     47 #define ELF_TARG_CLASS  ELFCLASS64
     48 #else
     49 #define	ARCH_ELFSIZE 32
     50 #define DB_ELFSIZE 32
     51 #define ELF_TARG_CLASS  ELFCLASS32
     52 #endif
     53 
     54 #if defined(__MIPSEB__)
     55 #define ELF_TARG_DATA		ELFDATA2MSB
     56 #else
     57 #define ELF_TARG_DATA		ELFDATA2LSB
     58 #endif
     59 #define ELF_TARG_MACH		EM_MIPS
     60 
     61 #define _NLIST_DO_ELF
     62 
     63 #if defined(_LP64)
     64 #define _KERN_DO_ELF64
     65 #if defined(COMPAT_O32)
     66 #define _KERN_DO_ELF
     67 #endif
     68 #else
     69 #define _KERN_DO_ELF
     70 #endif
     71 
     72 /* Information taken from MIPS ABI supplemental */
     73 
     74 /* Architecture dependent Segment types - p_type */
     75 #define PT_MIPS_REGINFO 0x70000000      /* Register usage information */
     76 
     77 /* Architecture dependent d_tag field for Elf32_Dyn.  */
     78 #define DT_MIPS_RLD_VERSION  0x70000001 /* Runtime Linker Interface ID */
     79 #define DT_MIPS_TIME_STAMP   0x70000002 /* Timestamp */
     80 #define DT_MIPS_ICHECKSUM    0x70000003 /* Cksum of ext. str. and com. sizes */
     81 #define DT_MIPS_IVERSION     0x70000004 /* Version string (string tbl index) */
     82 #define DT_MIPS_FLAGS        0x70000005 /* Flags */
     83 #define DT_MIPS_BASE_ADDRESS 0x70000006 /* Segment base address */
     84 #define DT_MIPS_CONFLICT     0x70000008 /* Adr of .conflict section */
     85 #define DT_MIPS_LIBLIST      0x70000009 /* Address of .liblist section */
     86 #define DT_MIPS_LOCAL_GOTNO  0x7000000a /* Number of local .GOT entries */
     87 #define DT_MIPS_CONFLICTNO   0x7000000b /* Number of .conflict entries */
     88 #define DT_MIPS_LIBLISTNO    0x70000010 /* Number of .liblist entries */
     89 #define DT_MIPS_SYMTABNO     0x70000011 /* Number of .dynsym entries */
     90 #define DT_MIPS_UNREFEXTNO   0x70000012 /* First external DYNSYM */
     91 #define DT_MIPS_GOTSYM       0x70000013 /* First GOT entry in .dynsym */
     92 #define DT_MIPS_HIPAGENO     0x70000014 /* Number of GOT page table entries */
     93 #define DT_MIPS_RLD_MAP      0x70000016 /* Address of debug map pointer */
     94 
     95 #define DT_PROCNUM (DT_MIPS_RLD_MAP - DT_LOPROC + 1)
     96 
     97 /*
     98  * Legal values for e_flags field of Elf32_Ehdr.
     99  */
    100 #define EF_MIPS_NOREORDER	0x00000001	/* .noreorder was used */
    101 #define EF_MIPS_PIC		0x00000002	/* Contains PIC code */
    102 #define EF_MIPS_CPIC		0x00000004	/* Uses PIC calling sequence */
    103 #define	EF_MIPS_ABI2		0x00000020	/* -n32 on Irix 6 */
    104 #define	EF_MIPS_32BITMODE	0x00000100	/* 64 bit in 32 bit mode... */
    105 #define EF_MIPS_ARCH		0xf0000000	/* MIPS architecture level */
    106 #define	E_MIPS_ARCH_1		0x00000000
    107 #define	E_MIPS_ARCH_2		0x10000000
    108 #define	E_MIPS_ARCH_3		0x20000000
    109 #define	E_MIPS_ARCH_4		0x30000000
    110 #define	EF_MIPS_ABI		0x0000f000	/* ABI level */
    111 #define	E_MIPS_ABI_NONE		0x00000000	/* ABI level not set */
    112 #define	E_MIPS_ABI_O32		0x00001000
    113 #define	E_MIPS_ABI_O64		0x00002000
    114 #define	E_MIPS_ABI_EABI32	0x00004000
    115 #define	E_MIPS_ABI_EABI64	0x00004000
    116 
    117 /*
    118  * Mips special sections.
    119  */
    120 #define	SHN_MIPS_ACOMMON	0xff00		/* Allocated common symbols */
    121 #define	SHN_MIPS_SCOMMON	0xff03		/* Small common symbols */
    122 #define	SHN_MIPS_SUNDEFINED	0xff04		/* Small undefined symbols */
    123 
    124 /*
    125  * Legal values for sh_type field of Elf32_Shdr.
    126  */
    127 #define	SHT_MIPS_LIBLIST  0x70000000	/* Shared objects used in link */
    128 #define	SHT_MIPS_CONFLICT 0x70000002	/* Conflicting symbols */
    129 #define	SHT_MIPS_GPTAB    0x70000003	/* Global data area sizes */
    130 #define	SHT_MIPS_UCODE    0x70000004	/* Reserved for SGI/MIPS compilers */
    131 #define	SHT_MIPS_DEBUG    0x70000005	/* MIPS ECOFF debugging information */
    132 #define	SHT_MIPS_REGINFO  0x70000006	/* Register usage information */
    133 
    134 /*
    135  * Legal values for sh_flags field of Elf32_Shdr.
    136  */
    137 #define	SHF_MIPS_GPREL	0x10000000	/* Must be part of global data area */
    138 
    139 #if 0
    140 /*
    141  * Entries found in sections of type SHT_MIPS_GPTAB.
    142  */
    143 typedef union {
    144 	struct {
    145 		Elf32_Word gt_current_g_value;	/* -G val used in compilation */
    146 		Elf32_Word gt_unused;	/* Not used */
    147 	} gt_header;			/* First entry in section */
    148 	struct {
    149 		Elf32_Word gt_g_value;	/* If this val were used for -G */
    150 		Elf32_Word gt_bytes;	/* This many bytes would be used */
    151 	} gt_entry;			/* Subsequent entries in section */
    152 } Elf32_gptab;
    153 
    154 /*
    155  * Entry found in sections of type SHT_MIPS_REGINFO.
    156  */
    157 typedef struct {
    158 	Elf32_Word	ri_gprmask;	/* General registers used */
    159 	Elf32_Word	ri_cprmask[4];	/* Coprocessor registers used */
    160 	Elf32_Sword	ri_gp_value;	/* $gp register value */
    161 } Elf32_RegInfo;
    162 #endif
    163 
    164 
    165 /*
    166  * Mips relocations.
    167  */
    168 
    169 #define	R_MIPS_NONE	0	/* No reloc */
    170 #define	R_MIPS_16	1	/* Direct 16 bit */
    171 #define	R_MIPS_32	2	/* Direct 32 bit */
    172 #define	R_MIPS_REL32	3	/* PC relative 32 bit */
    173 #define	R_MIPS_26	4	/* Direct 26 bit shifted */
    174 #define	R_MIPS_HI16	5	/* High 16 bit */
    175 #define	R_MIPS_LO16	6	/* Low 16 bit */
    176 #define	R_MIPS_GPREL16	7	/* GP relative 16 bit */
    177 #define	R_MIPS_LITERAL	8	/* 16 bit literal entry */
    178 #define	R_MIPS_GOT16	9	/* 16 bit GOT entry */
    179 #define	R_MIPS_PC16	10	/* PC relative 16 bit */
    180 #define	R_MIPS_CALL16	11	/* 16 bit GOT entry for function */
    181 #define	R_MIPS_GPREL32	12	/* GP relative 32 bit */
    182 
    183 #define	R_MIPS_64	18
    184 
    185 #define	R_MIPS_REL32_64	((R_MIPS_64 << 8) | R_MIPS_REL32)
    186 
    187 
    188 #endif	/* !_MIPS64_EXEC_H_ */
    189