1993-10-12 22:29:51 +08:00
|
|
|
|
/* MIPS ELF support for BFD.
|
1994-03-06 06:39:47 +08:00
|
|
|
|
Copyright (C) 1993, 1994 Free Software Foundation, Inc.
|
1993-10-12 22:29:51 +08:00
|
|
|
|
|
|
|
|
|
By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from
|
|
|
|
|
information in the System V Application Binary Interface, MIPS
|
|
|
|
|
Processor Supplement.
|
|
|
|
|
|
|
|
|
|
This file is part of BFD, the Binary File Descriptor library.
|
|
|
|
|
|
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
|
|
|
it under the terms of the GNU General Public License as published by
|
|
|
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
|
|
|
(at your option) any later version.
|
|
|
|
|
|
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
|
GNU General Public License for more details.
|
|
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
|
|
|
along with this program; if not, write to the Free Software
|
1996-05-30 03:36:40 +08:00
|
|
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
1993-10-12 22:29:51 +08:00
|
|
|
|
|
|
|
|
|
/* This file holds definitions specific to the MIPS ELF ABI. Note
|
|
|
|
|
that most of this is not actually implemented by BFD. */
|
|
|
|
|
|
1996-05-30 03:36:40 +08:00
|
|
|
|
#ifndef _ELF_MIPS_H
|
|
|
|
|
#define _ELF_MIPS_H
|
|
|
|
|
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* Processor specific flags for the ELF header e_flags field. */
|
|
|
|
|
|
|
|
|
|
/* At least one .noreorder directive appears in the source. */
|
|
|
|
|
#define EF_MIPS_NOREORDER 0x00000001
|
|
|
|
|
|
|
|
|
|
/* File contains position independent code. */
|
|
|
|
|
#define EF_MIPS_PIC 0x00000002
|
|
|
|
|
|
|
|
|
|
/* Code in file uses the standard calling sequence for calling
|
|
|
|
|
position independent code. */
|
|
|
|
|
#define EF_MIPS_CPIC 0x00000004
|
|
|
|
|
|
|
|
|
|
/* Four bit MIPS architecture field. */
|
|
|
|
|
#define EF_MIPS_ARCH 0xf0000000
|
1994-03-06 06:39:47 +08:00
|
|
|
|
|
|
|
|
|
/* -mips1 code. */
|
|
|
|
|
#define E_MIPS_ARCH_1 0x00000000
|
|
|
|
|
|
|
|
|
|
/* -mips2 code. */
|
|
|
|
|
#define E_MIPS_ARCH_2 0x10000000
|
|
|
|
|
|
|
|
|
|
/* -mips3 code. */
|
|
|
|
|
#define E_MIPS_ARCH_3 0x20000000
|
1996-05-31 00:36:27 +08:00
|
|
|
|
|
|
|
|
|
/* -mips4 code. */
|
|
|
|
|
#define E_MIPS_ARCH_4 0x30000000
|
1993-10-12 22:29:51 +08:00
|
|
|
|
|
|
|
|
|
/* Processor specific section indices. These sections do not actually
|
|
|
|
|
exist. Symbols with a st_shndx field corresponding to one of these
|
|
|
|
|
values have a special meaning. */
|
|
|
|
|
|
|
|
|
|
/* Defined and allocated common symbol. Value is virtual address. If
|
|
|
|
|
relocated, alignment must be preserved. */
|
|
|
|
|
#define SHN_MIPS_ACOMMON 0xff00
|
|
|
|
|
|
1996-05-30 03:36:40 +08:00
|
|
|
|
/* Defined and allocated text symbol. Value is virtual address.
|
|
|
|
|
Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
|
|
|
|
|
#define SHN_MIPS_TEXT 0xff01
|
|
|
|
|
|
|
|
|
|
/* Defined and allocated data symbol. Value is virtual address.
|
|
|
|
|
Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables. */
|
|
|
|
|
#define SHN_MIPS_DATA 0xff02
|
|
|
|
|
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* Small common symbol. */
|
|
|
|
|
#define SHN_MIPS_SCOMMON 0xff03
|
|
|
|
|
|
|
|
|
|
/* Small undefined symbol. */
|
|
|
|
|
#define SHN_MIPS_SUNDEFINED 0xff04
|
|
|
|
|
|
|
|
|
|
/* Processor specific section types. */
|
|
|
|
|
|
|
|
|
|
/* Section contains the set of dynamic shared objects used when
|
|
|
|
|
statically linking. */
|
|
|
|
|
#define SHT_MIPS_LIBLIST 0x70000000
|
|
|
|
|
|
1996-05-30 03:36:40 +08:00
|
|
|
|
/* I'm not sure what this is, but it's used on Irix 5. */
|
|
|
|
|
#define SHT_MIPS_MSYM 0x70000001
|
|
|
|
|
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* Section contains list of symbols whose definitions conflict with
|
|
|
|
|
symbols defined in shared objects. */
|
|
|
|
|
#define SHT_MIPS_CONFLICT 0x70000002
|
|
|
|
|
|
|
|
|
|
/* Section contains the global pointer table. */
|
|
|
|
|
#define SHT_MIPS_GPTAB 0x70000003
|
|
|
|
|
|
|
|
|
|
/* Section contains microcode information. The exact format is
|
|
|
|
|
unspecified. */
|
|
|
|
|
#define SHT_MIPS_UCODE 0x70000004
|
|
|
|
|
|
|
|
|
|
/* Section contains some sort of debugging information. The exact
|
|
|
|
|
format is unspecified. It's probably ECOFF symbols. */
|
|
|
|
|
#define SHT_MIPS_DEBUG 0x70000005
|
|
|
|
|
|
|
|
|
|
/* Section contains register usage information. */
|
|
|
|
|
#define SHT_MIPS_REGINFO 0x70000006
|
|
|
|
|
|
1994-03-06 06:39:47 +08:00
|
|
|
|
/* Section contains miscellaneous options (used on Irix). */
|
|
|
|
|
#define SHT_MIPS_OPTIONS 0x7000000d
|
|
|
|
|
|
1996-05-30 03:36:40 +08:00
|
|
|
|
/* DWARF debugging section (used on Irix 6). */
|
|
|
|
|
#define SHT_MIPS_DWARF 0x7000001e
|
|
|
|
|
|
|
|
|
|
/* Events section. This appears on Irix 6. I don't know what it
|
|
|
|
|
means. */
|
|
|
|
|
#define SHT_MIPS_EVENTS 0x70000021
|
|
|
|
|
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* A section of type SHT_MIPS_LIBLIST contains an array of the
|
|
|
|
|
following structure. The sh_link field is the section index of the
|
|
|
|
|
string table. The sh_info field is the number of entries in the
|
|
|
|
|
section. */
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
/* String table index for name of shared object. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long l_name;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* Time stamp. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long l_time_stamp;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* Checksum of symbol names and common sizes. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long l_checksum;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* String table index for version. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long l_version;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* Flags. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long l_flags;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
} Elf32_Lib;
|
|
|
|
|
|
|
|
|
|
/* The l_flags field of an Elf32_Lib structure may contain the
|
|
|
|
|
following flags. */
|
|
|
|
|
|
|
|
|
|
/* Require an exact match at runtime. */
|
|
|
|
|
#define LL_EXACT_MATCH 0x00000001
|
|
|
|
|
|
|
|
|
|
/* Ignore version incompatibilities at runtime. */
|
|
|
|
|
#define LL_IGNORE_INT_VER 0x00000002
|
|
|
|
|
|
|
|
|
|
/* A section of type SHT_MIPS_CONFLICT is an array of indices into the
|
|
|
|
|
.dynsym section. Each element has the following type. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
typedef unsigned long Elf32_Conflict;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
|
|
|
|
|
/* A section of type SHT_MIPS_GPTAB contains information about how
|
|
|
|
|
much GP space would be required for different -G arguments. This
|
|
|
|
|
information is only used so that the linker can provide informative
|
|
|
|
|
suggestions as to the best -G value to use. The sh_info field is
|
|
|
|
|
the index of the section for which this information applies. The
|
|
|
|
|
contents of the section are an array of the following union. The
|
|
|
|
|
first element uses the gt_header field. The remaining elements use
|
|
|
|
|
the gt_entry field. */
|
|
|
|
|
typedef union
|
|
|
|
|
{
|
|
|
|
|
struct
|
|
|
|
|
{
|
|
|
|
|
/* -G value actually used for this object file. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long gt_current_g_value;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* Unused. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long gt_unused;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
} gt_header;
|
|
|
|
|
struct
|
|
|
|
|
{
|
|
|
|
|
/* If this -G argument has been used... */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long gt_g_value;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* ...this many GP section bytes would be required. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long gt_bytes;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
} gt_entry;
|
|
|
|
|
} Elf32_gptab;
|
|
|
|
|
|
1996-05-30 03:36:40 +08:00
|
|
|
|
/* The external version of Elf32_gptab. */
|
|
|
|
|
|
|
|
|
|
typedef union
|
|
|
|
|
{
|
|
|
|
|
struct
|
|
|
|
|
{
|
|
|
|
|
unsigned char gt_current_g_value[4];
|
|
|
|
|
unsigned char gt_unused[4];
|
|
|
|
|
} gt_header;
|
|
|
|
|
struct
|
|
|
|
|
{
|
|
|
|
|
unsigned char gt_g_value[4];
|
|
|
|
|
unsigned char gt_bytes[4];
|
|
|
|
|
} gt_entry;
|
|
|
|
|
} Elf32_External_gptab;
|
|
|
|
|
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* A section of type SHT_MIPS_REGINFO contains the following
|
|
|
|
|
structure. */
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
/* Mask of general purpose registers used. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long ri_gprmask;
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* Mask of co-processor registers used. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
unsigned long ri_cprmask[4];
|
1993-10-12 22:29:51 +08:00
|
|
|
|
/* GP register value for this object file. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
long ri_gp_value;
|
|
|
|
|
} Elf32_RegInfo;
|
|
|
|
|
|
|
|
|
|
/* The external version of the Elf_RegInfo structure. */
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
unsigned char ri_gprmask[4];
|
|
|
|
|
unsigned char ri_cprmask[4][4];
|
|
|
|
|
unsigned char ri_gp_value[4];
|
|
|
|
|
} Elf32_External_RegInfo;
|
|
|
|
|
|
|
|
|
|
/* MIPS ELF .reginfo swapping routines. */
|
|
|
|
|
extern void bfd_mips_elf32_swap_reginfo_in
|
|
|
|
|
PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *));
|
|
|
|
|
extern void bfd_mips_elf32_swap_reginfo_out
|
|
|
|
|
PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *));
|
1993-10-12 22:29:51 +08:00
|
|
|
|
|
|
|
|
|
/* Processor specific section flags. */
|
|
|
|
|
|
|
|
|
|
/* This section must be in the global data area. */
|
1994-03-06 06:39:47 +08:00
|
|
|
|
#define SHF_MIPS_GPREL 0x10000000
|
|
|
|
|
|
|
|
|
|
/* Processor specific program header types. */
|
|
|
|
|
|
|
|
|
|
/* Register usage information. Identifies one .reginfo section. */
|
|
|
|
|
#define PT_MIPS_REGINFO 0x70000000
|
1996-05-30 03:36:40 +08:00
|
|
|
|
|
|
|
|
|
/* Runtime procedure table. */
|
|
|
|
|
#define PT_MIPS_RTPROC 0x70000001
|
1994-03-06 06:39:47 +08:00
|
|
|
|
|
|
|
|
|
/* Processor specific dynamic array tags. */
|
|
|
|
|
|
|
|
|
|
/* 32 bit version number for runtime linker interface. */
|
|
|
|
|
#define DT_MIPS_RLD_VERSION 0x70000001
|
|
|
|
|
|
|
|
|
|
/* Time stamp. */
|
|
|
|
|
#define DT_MIPS_TIME_STAMP 0x70000002
|
|
|
|
|
|
|
|
|
|
/* Checksum of external strings and common sizes. */
|
|
|
|
|
#define DT_MIPS_ICHECKSUM 0x70000003
|
|
|
|
|
|
|
|
|
|
/* Index of version string in string table. */
|
|
|
|
|
#define DT_MIPS_IVERSION 0x70000004
|
|
|
|
|
|
|
|
|
|
/* 32 bits of flags. */
|
|
|
|
|
#define DT_MIPS_FLAGS 0x70000005
|
|
|
|
|
|
|
|
|
|
/* Base address of the segment. */
|
|
|
|
|
#define DT_MIPS_BASE_ADDRESS 0x70000006
|
|
|
|
|
|
|
|
|
|
/* Address of .conflict section. */
|
|
|
|
|
#define DT_MIPS_CONFLICT 0x70000008
|
|
|
|
|
|
|
|
|
|
/* Address of .liblist section. */
|
|
|
|
|
#define DT_MIPS_LIBLIST 0x70000009
|
|
|
|
|
|
|
|
|
|
/* Number of local global offset table entries. */
|
|
|
|
|
#define DT_MIPS_LOCAL_GOTNO 0x7000000a
|
|
|
|
|
|
|
|
|
|
/* Number of entries in the .conflict section. */
|
|
|
|
|
#define DT_MIPS_CONFLICTNO 0x7000000b
|
|
|
|
|
|
|
|
|
|
/* Number of entries in the .liblist section. */
|
|
|
|
|
#define DT_MIPS_LIBLISTNO 0x70000010
|
|
|
|
|
|
|
|
|
|
/* Number of entries in the .dynsym section. */
|
|
|
|
|
#define DT_MIPS_SYMTABNO 0x70000011
|
|
|
|
|
|
|
|
|
|
/* Index of first external dynamic symbol not referenced locally. */
|
|
|
|
|
#define DT_MIPS_UNREFEXTNO 0x70000012
|
|
|
|
|
|
|
|
|
|
/* Index of first dynamic symbol in global offset table. */
|
|
|
|
|
#define DT_MIPS_GOTSYM 0x70000013
|
|
|
|
|
|
|
|
|
|
/* Number of page table entries in global offset table. */
|
|
|
|
|
#define DT_MIPS_HIPAGENO 0x70000014
|
|
|
|
|
|
|
|
|
|
/* Address of run time loader map, used for debugging. */
|
|
|
|
|
#define DT_MIPS_RLD_MAP 0x70000016
|
1996-05-30 03:36:40 +08:00
|
|
|
|
|
|
|
|
|
/* Flags which may appear in a DT_MIPS_FLAGS entry. */
|
|
|
|
|
|
|
|
|
|
/* No flags. */
|
|
|
|
|
#define RHF_NONE 0x00000000
|
|
|
|
|
|
|
|
|
|
/* Uses shortcut pointers. */
|
|
|
|
|
#define RHF_QUICKSTART 0x00000001
|
|
|
|
|
|
|
|
|
|
/* Hash size is not a power of two. */
|
|
|
|
|
#define RHF_NOTPOT 0x00000002
|
|
|
|
|
|
|
|
|
|
/* Ignore LD_LIBRARY_PATH. */
|
|
|
|
|
#define RHS_NO_LIBRARY_REPLACEMENT \
|
|
|
|
|
0x00000004
|
|
|
|
|
|
|
|
|
|
/* Special values for the st_other field in the symbol table. These
|
|
|
|
|
are used in an Irix 5 dynamic symbol table. */
|
|
|
|
|
|
|
|
|
|
#define STO_DEFAULT 0x00
|
|
|
|
|
#define STO_INTERNAL 0x01
|
|
|
|
|
#define STO_HIDDEN 0x02
|
|
|
|
|
#define STO_PROTECTED 0x03
|
|
|
|
|
|
|
|
|
|
/* The 64-bit MIPS ELF ABI uses an usual reloc format. Each
|
|
|
|
|
relocation entry specifies up to three actual relocations, all at
|
|
|
|
|
the same address. The first relocation which required a symbol
|
|
|
|
|
uses the symbol in the r_sym field. The second relocation which
|
|
|
|
|
requires a symbol uses the symbol in the r_ssym field. If all
|
|
|
|
|
three relocations require a symbol, the third one uses a zero
|
|
|
|
|
value. */
|
|
|
|
|
|
|
|
|
|
/* An entry in a 64 bit SHT_REL section. */
|
|
|
|
|
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
/* Address of relocation. */
|
|
|
|
|
unsigned char r_offset[8];
|
|
|
|
|
/* Symbol index. */
|
|
|
|
|
unsigned char r_sym[4];
|
|
|
|
|
/* Special symbol. */
|
|
|
|
|
unsigned char r_ssym[1];
|
|
|
|
|
/* Third relocation. */
|
|
|
|
|
unsigned char r_type3[1];
|
|
|
|
|
/* Second relocation. */
|
|
|
|
|
unsigned char r_type2[1];
|
|
|
|
|
/* First relocation. */
|
|
|
|
|
unsigned char r_type[1];
|
|
|
|
|
} Elf64_Mips_External_Rel;
|
|
|
|
|
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
/* Address of relocation. */
|
|
|
|
|
bfd_vma r_offset;
|
|
|
|
|
/* Symbol index. */
|
|
|
|
|
unsigned long r_sym;
|
|
|
|
|
/* Special symbol. */
|
|
|
|
|
unsigned char r_ssym;
|
|
|
|
|
/* Third relocation. */
|
|
|
|
|
unsigned char r_type3;
|
|
|
|
|
/* Second relocation. */
|
|
|
|
|
unsigned char r_type2;
|
|
|
|
|
/* First relocation. */
|
|
|
|
|
unsigned char r_type;
|
|
|
|
|
} Elf64_Mips_Internal_Rel;
|
|
|
|
|
|
|
|
|
|
/* An entry in a 64 bit SHT_RELA section. */
|
|
|
|
|
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
/* Address of relocation. */
|
|
|
|
|
unsigned char r_offset[8];
|
|
|
|
|
/* Symbol index. */
|
|
|
|
|
unsigned char r_sym[4];
|
|
|
|
|
/* Special symbol. */
|
|
|
|
|
unsigned char r_ssym[1];
|
|
|
|
|
/* Third relocation. */
|
|
|
|
|
unsigned char r_type3[1];
|
|
|
|
|
/* Second relocation. */
|
|
|
|
|
unsigned char r_type2[1];
|
|
|
|
|
/* First relocation. */
|
|
|
|
|
unsigned char r_type[1];
|
|
|
|
|
/* Addend. */
|
|
|
|
|
unsigned char r_addend[8];
|
|
|
|
|
} Elf64_Mips_External_Rela;
|
|
|
|
|
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
/* Address of relocation. */
|
|
|
|
|
bfd_vma r_offset;
|
|
|
|
|
/* Symbol index. */
|
|
|
|
|
unsigned long r_sym;
|
|
|
|
|
/* Special symbol. */
|
|
|
|
|
unsigned char r_ssym;
|
|
|
|
|
/* Third relocation. */
|
|
|
|
|
unsigned char r_type3;
|
|
|
|
|
/* Second relocation. */
|
|
|
|
|
unsigned char r_type2;
|
|
|
|
|
/* First relocation. */
|
|
|
|
|
unsigned char r_type;
|
|
|
|
|
/* Addend. */
|
|
|
|
|
bfd_signed_vma r_addend;
|
|
|
|
|
} Elf64_Mips_Internal_Rela;
|
|
|
|
|
|
|
|
|
|
/* Values found in the r_ssym field of a relocation entry. */
|
|
|
|
|
|
|
|
|
|
/* No relocation. */
|
|
|
|
|
#define RSS_UNDEF 0
|
|
|
|
|
|
|
|
|
|
/* Value of GP. */
|
|
|
|
|
#define RSS_GP 1
|
|
|
|
|
|
|
|
|
|
/* Value of GP in object being relocated. */
|
|
|
|
|
#define RSS_GP0 2
|
|
|
|
|
|
|
|
|
|
/* Address of location being relocated. */
|
|
|
|
|
#define RSS_LOC 3
|
|
|
|
|
|
|
|
|
|
#endif /* _ELF_MIPS_H */
|