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- /* MIPS ELF support for BFD.
- Copyright (C) 1993, 1994 Free Software Foundation, Inc.
-
- 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
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* This file holds definitions specific to the MIPS ELF ABI. Note
- that most of this is not actually implemented by BFD. */
-
- /* 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
-
- /* -mips1 code. */
- #define E_MIPS_ARCH_1 0x00000000
-
- /* -mips2 code. */
- #define E_MIPS_ARCH_2 0x10000000
-
- /* -mips3 code. */
- #define E_MIPS_ARCH_3 0x20000000
-
- /* 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
-
- /* 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
-
- /* 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
-
- /* 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
-
- /* Section contains miscellaneous options (used on Irix). */
- #define SHT_MIPS_OPTIONS 0x7000000d
-
- /* 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. */
- unsigned long l_name;
- /* Time stamp. */
- unsigned long l_time_stamp;
- /* Checksum of symbol names and common sizes. */
- unsigned long l_checksum;
- /* String table index for version. */
- unsigned long l_version;
- /* Flags. */
- unsigned long l_flags;
- } 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. */
- typedef unsigned long Elf32_Conflict;
-
- /* 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. */
- unsigned long gt_current_g_value;
- /* Unused. */
- unsigned long gt_unused;
- } gt_header;
- struct
- {
- /* If this -G argument has been used... */
- unsigned long gt_g_value;
- /* ...this many GP section bytes would be required. */
- unsigned long gt_bytes;
- } gt_entry;
- } Elf32_gptab;
-
- /* 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;
-
- /* A section of type SHT_MIPS_REGINFO contains the following
- structure. */
- typedef struct
- {
- /* Mask of general purpose registers used. */
- unsigned long ri_gprmask;
- /* Mask of co-processor registers used. */
- unsigned long ri_cprmask[4];
- /* GP register value for this object file. */
- 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 *));
-
- /* Processor specific section flags. */
-
- /* This section must be in the global data area. */
- #define SHF_MIPS_GPREL 0x10000000
-
- /* Processor specific program header types. */
-
- /* Register usage information. Identifies one .reginfo section. */
- #define PT_MIPS_REGINFO 0x70000000
-
- /* 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
-