0,0 → 1,647 |
/* Internal format of XCOFF object file data structures for BFD. |
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Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, |
2009, 2010 Free Software Foundation, Inc. |
Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support. |
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This file is part of BFD, the Binary File Descriptor library. |
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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 3 of the License, or |
(at your option) any later version. |
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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., 51 Franklin Street - Fifth Floor, Boston, |
MA 02110-1301, USA. */ |
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#ifndef _INTERNAL_XCOFF_H |
#define _INTERNAL_XCOFF_H |
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/* XCOFF specific f_flags. */ |
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/* File was profiled with fdpr. */ |
#define F_FDPR_PROF 0x0010 |
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/* File was reordered with fdpr. */ |
#define F_FDPR_OPTI 0x0020 |
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/* File use very large program support. */ |
#define F_DSA 0x0040 |
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/* One aux header specifying medium page sizes is non-zero. */ |
#define F_VARPG 0x0100 |
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/* Read/write sections are non-executable. */ |
#define F_NONEXEC 0x8000 |
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/* Linker */ |
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/* Names of "special" sections. */ |
#define _TEXT ".text" |
#define _DATA ".data" |
#define _BSS ".bss" |
#define _PAD ".pad" |
#define _LOADER ".loader" |
#define _EXCEPT ".except" |
#define _TYPCHK ".typchk" |
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/* XCOFF uses special .dwXXX sections with the type STYP_DWARF. */ |
#define STYP_DWARF 0x0010 |
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/* High-order 16-bits dwarf subtypes. */ |
#define SSUBTYP_DWINFO 0x10000 |
#define SSUBTYP_DWLINE 0x20000 |
#define SSUBTYP_DWPBNMS 0x30000 |
#define SSUBTYP_DWPBTYP 0x40000 |
#define SSUBTYP_DWARNGE 0x50000 |
#define SSUBTYP_DWABREV 0x60000 |
#define SSUBTYP_DWSTR 0x70000 |
#define SSUBTYP_DWRNGES 0x80000 |
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/* XCOFF uses a special .loader section with type STYP_LOADER. */ |
#define STYP_LOADER 0x1000 |
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/* Specifies an exception section. A section of this type provides |
information to identify the reason that a trap or ececptin occured within |
and executable object program */ |
#define STYP_EXCEPT 0x0100 |
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/* Specifies an initialized thread-local data section. */ |
#define STYP_TDATA 0x0400 |
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/* Specifies an uninitialized thread-local data section. */ |
#define STYP_TBSS 0x0800 |
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/* XCOFF uses a special .debug section with type STYP_DEBUG. */ |
#define STYP_DEBUG 0x2000 |
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/* Specifies a type check section. A section of this type contains parameter |
argument type check strings used by the AIX binder. */ |
#define STYP_TYPCHK 0x4000 |
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/* XCOFF handles line number or relocation overflow by creating |
another section header with STYP_OVRFLO set. */ |
#define STYP_OVRFLO 0x8000 |
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#define RS6K_AOUTHDR_OMAGIC 0x0107 /* old: text & data writeable */ |
#define RS6K_AOUTHDR_NMAGIC 0x0108 /* new: text r/o, data r/w */ |
#define RS6K_AOUTHDR_ZMAGIC 0x010B /* paged: text r/o, both page-aligned */ |
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/* XCOFF relocation types. |
The relocations are described in the function |
xcoff[64]_ppc_relocate_section in coff64-rs6000.c and coff-rs6000.c */ |
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#define R_POS (0x00) |
#define R_NEG (0x01) |
#define R_REL (0x02) |
#define R_TOC (0x03) |
#define R_RTB (0x04) |
#define R_GL (0x05) |
#define R_TCL (0x06) |
#define R_BA (0x08) |
#define R_BR (0x0a) |
#define R_RL (0x0c) |
#define R_RLA (0x0d) |
#define R_REF (0x0f) |
#define R_TRL (0x12) |
#define R_TRLA (0x13) |
#define R_RRTBI (0x14) |
#define R_RRTBA (0x15) |
#define R_CAI (0x16) |
#define R_CREL (0x17) |
#define R_RBA (0x18) |
#define R_RBAC (0x19) |
#define R_RBR (0x1a) |
#define R_RBRC (0x1b) |
#define R_TLS (0x20) |
#define R_TLS_IE (0x21) |
#define R_TLS_LD (0x22) |
#define R_TLS_LE (0x23) |
#define R_TLSM (0x24) |
#define R_TLSML (0x25) |
#define R_TOCU (0x30) |
#define R_TOCL (0x31) |
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/* Storage class #defines, from /usr/include/storclass.h that are not already |
defined in internal.h */ |
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/* Comment string in .info section */ |
#define C_INFO 110 |
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/* Dwarf symbol. */ |
#define C_DWARF 112 |
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/* Auxillary Symbol Entries */ |
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/* x_smtyp values: */ |
#define SMTYP_ALIGN(x) ((x) >> 3) /* log2 of alignment */ |
#define SMTYP_SMTYP(x) ((x) & 0x7) /* symbol type */ |
/* Symbol type values: */ |
#define XTY_ER 0 /* External reference */ |
#define XTY_SD 1 /* Csect definition */ |
#define XTY_LD 2 /* Label definition */ |
#define XTY_CM 3 /* .BSS */ |
#define XTY_EM 4 /* Error message */ |
#define XTY_US 5 /* "Reserved for internal use" */ |
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/* x_smclas values: */ |
#define XMC_PR 0 /* Read-only program code */ |
#define XMC_RO 1 /* Read-only constant */ |
#define XMC_DB 2 /* Read-only debug dictionary table */ |
#define XMC_TC 3 /* Read-write general TOC entry */ |
#define XMC_UA 4 /* Read-write unclassified */ |
#define XMC_RW 5 /* Read-write data */ |
#define XMC_GL 6 /* Read-only global linkage */ |
#define XMC_XO 7 /* Read-only extended operation */ |
#define XMC_SV 8 /* Read-only supervisor call */ |
#define XMC_BS 9 /* Read-write BSS */ |
#define XMC_DS 10 /* Read-write descriptor csect */ |
#define XMC_UC 11 /* Read-write unnamed Fortran common */ |
#define XMC_TI 12 /* Read-only traceback index csect */ |
#define XMC_TB 13 /* Read-only traceback table csect */ |
/* 14 ??? */ |
#define XMC_TC0 15 /* Read-write TOC anchor */ |
#define XMC_TD 16 /* Read-write data in TOC */ |
#define XMC_SV64 17 /* Read-only 64 bit supervisor call */ |
#define XMC_SV3264 18 /* Read-only 32 or 64 bit supervisor call */ |
/* 19 ??? */ |
#define XMC_TL 20 /* Read-write initialized TLS data */ |
#define XMC_TU 21 /* Read-write uninitialized TLS data */ |
#define XMC_TE 22 /* Same as XMC_TC but mapped after it */ |
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/* The ldhdr structure. This appears at the start of the .loader |
section. */ |
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struct internal_ldhdr |
{ |
/* The version number: |
1 : 32 bit |
2 : 64 bit */ |
unsigned long l_version; |
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/* The number of symbol table entries. */ |
bfd_size_type l_nsyms; |
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/* The number of relocation table entries. */ |
bfd_size_type l_nreloc; |
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/* The length of the import file string table. */ |
bfd_size_type l_istlen; |
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/* The number of import files. */ |
bfd_size_type l_nimpid; |
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/* The offset from the start of the .loader section to the first |
entry in the import file table. */ |
bfd_size_type l_impoff; |
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/* The length of the string table. */ |
bfd_size_type l_stlen; |
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/* The offset from the start of the .loader section to the first |
entry in the string table. */ |
bfd_size_type l_stoff; |
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/* The offset to start of the symbol table, only in XCOFF64 */ |
bfd_vma l_symoff; |
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/* The offset to the start of the relocation table, only in XCOFF64 */ |
bfd_vma l_rldoff; |
}; |
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/* The ldsym structure. This is used to represent a symbol in the |
.loader section. */ |
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struct internal_ldsym |
{ |
union |
{ |
/* The symbol name if <= SYMNMLEN characters. */ |
char _l_name[SYMNMLEN]; |
struct |
{ |
/* Zero if the symbol name is more than SYMNMLEN characters. */ |
long _l_zeroes; |
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/* The offset in the string table if the symbol name is more |
than SYMNMLEN characters. */ |
long _l_offset; |
} |
_l_l; |
} |
_l; |
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/* The symbol value. */ |
bfd_vma l_value; |
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/* The symbol section number. */ |
short l_scnum; |
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/* The symbol type and flags. */ |
char l_smtype; |
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/* The symbol storage class. */ |
char l_smclas; |
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/* The import file ID. */ |
bfd_size_type l_ifile; |
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/* Offset to the parameter type check string. */ |
bfd_size_type l_parm; |
}; |
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/* These flags are for the l_smtype field (the lower three bits are an |
XTY_* value). */ |
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/* Imported symbol. */ |
#define L_IMPORT (0x40) |
/* Entry point. */ |
#define L_ENTRY (0x20) |
/* Exported symbol. */ |
#define L_EXPORT (0x10) |
/* Weak symbol. */ |
#define L_WEAK (0x08) |
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/* The ldrel structure. This is used to represent a reloc in the |
.loader section. */ |
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struct internal_ldrel |
{ |
/* The reloc address. */ |
bfd_vma l_vaddr; |
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/* The symbol table index in the .loader section symbol table. */ |
bfd_size_type l_symndx; |
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/* The relocation type and size. */ |
short l_rtype; |
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/* The section number this relocation applies to. */ |
short l_rsecnm; |
}; |
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/* An entry in the XCOFF linker hash table. */ |
struct xcoff_link_hash_entry |
{ |
struct bfd_link_hash_entry root; |
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/* Symbol index in output file. Set to -1 initially. Set to -2 if |
there is a reloc against this symbol. */ |
long indx; |
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/* If we have created a TOC entry for this symbol, this is the .tc |
section which holds it. */ |
asection *toc_section; |
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union |
{ |
/* If we have created a TOC entry (the XCOFF_SET_TOC flag is |
set), this is the offset in toc_section. */ |
bfd_vma toc_offset; |
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/* If the TOC entry comes from an input file, this is set to the |
symbol index of the C_HIDEXT XMC_TC or XMC_TD symbol. */ |
long toc_indx; |
} |
u; |
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/* If this symbol is a function entry point which is called, this |
field holds a pointer to the function descriptor. If this symbol |
is a function descriptor, this field holds a pointer to the |
function entry point. */ |
struct xcoff_link_hash_entry *descriptor; |
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/* The .loader symbol table entry, if there is one. */ |
struct internal_ldsym *ldsym; |
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/* If XCOFF_BUILT_LDSYM is set, this is the .loader symbol table |
index. If XCOFF_BUILD_LDSYM is clear, and XCOFF_IMPORT is set, |
this is the l_ifile value. */ |
long ldindx; |
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/* Some linker flags. */ |
unsigned long flags; |
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/* The storage mapping class. */ |
unsigned char smclas; |
}; |
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/* Flags for xcoff_link_hash_entry. */ |
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/* Symbol is referenced by a regular object. */ |
#define XCOFF_REF_REGULAR 0x00000001 |
/* Symbol is defined by a regular object. */ |
#define XCOFF_DEF_REGULAR 0x00000002 |
/* Symbol is defined by a dynamic object. */ |
#define XCOFF_DEF_DYNAMIC 0x00000004 |
/* Symbol is used in a reloc being copied into the .loader section. */ |
#define XCOFF_LDREL 0x00000008 |
/* Symbol is the entry point. */ |
#define XCOFF_ENTRY 0x00000010 |
/* Symbol is for a function and is the target of a relocation. |
The relocation may or may not be a branch-type relocation. */ |
#define XCOFF_CALLED 0x00000020 |
/* Symbol needs the TOC entry filled in. */ |
#define XCOFF_SET_TOC 0x00000040 |
/* Symbol is implicitly or explicitly imported. */ |
#define XCOFF_IMPORT 0x00000080 |
/* Symbol is explicitly exported. */ |
#define XCOFF_EXPORT 0x00000100 |
/* Symbol has been processed by xcoff_build_ldsyms. */ |
#define XCOFF_BUILT_LDSYM 0x00000200 |
/* Symbol is mentioned by a section which was not garbage collected. */ |
#define XCOFF_MARK 0x00000400 |
/* Symbol size is recorded in size_list list from hash table. */ |
#define XCOFF_HAS_SIZE 0x00000800 |
/* Symbol is a function descriptor. */ |
#define XCOFF_DESCRIPTOR 0x00001000 |
/* Multiple definitions have been for the symbol. */ |
#define XCOFF_MULTIPLY_DEFINED 0x00002000 |
/* Symbol is the __rtinit symbol. */ |
#define XCOFF_RTINIT 0x00004000 |
/* Symbol is an imported 32 bit syscall. */ |
#define XCOFF_SYSCALL32 0x00008000 |
/* Symbol is an imported 64 bit syscall. */ |
#define XCOFF_SYSCALL64 0x00010000 |
/* Symbol was not explicitly defined by the time it was marked. */ |
#define XCOFF_WAS_UNDEFINED 0x00020000 |
/* We have assigned an output XCOFF entry to this symbol. */ |
#define XCOFF_ALLOCATED 0x00040000 |
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/* The XCOFF linker hash table. */ |
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#define XCOFF_NUMBER_OF_SPECIAL_SECTIONS 6 |
#define XCOFF_SPECIAL_SECTION_TEXT 0 |
#define XCOFF_SPECIAL_SECTION_ETEXT 1 |
#define XCOFF_SPECIAL_SECTION_DATA 2 |
#define XCOFF_SPECIAL_SECTION_EDATA 3 |
#define XCOFF_SPECIAL_SECTION_END 4 |
#define XCOFF_SPECIAL_SECTION_END2 5 |
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/* These flags indicate which of -bexpall and -bexpfull are in effect. */ |
#define XCOFF_EXPALL 1 |
#define XCOFF_EXPFULL 2 |
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/* This structure is used to pass information through |
xcoff_link_hash_traverse. */ |
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struct xcoff_loader_info |
{ |
/* Set if a problem occurred. */ |
bfd_boolean failed; |
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/* Output BFD. */ |
bfd *output_bfd; |
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/* Link information structure. */ |
struct bfd_link_info *info; |
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/* A mask of XCOFF_EXPALL and XCOFF_EXPFULL flags. */ |
unsigned int auto_export_flags; |
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/* Number of ldsym structures. */ |
size_t ldsym_count; |
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/* Size of string table. */ |
size_t string_size; |
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/* String table. */ |
char *strings; |
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/* Allocated size of string table. */ |
size_t string_alc; |
}; |
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/* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
from smaller values. Start with zero, widen, *then* decrement. */ |
#define MINUS_ONE (((bfd_vma) 0) - 1) |
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/* __rtinit, from /usr/include/rtinit.h. */ |
struct __rtinit |
{ |
/* Pointer to runtime linker. |
XXX: Is the parameter really void? */ |
int (*rtl) (void); |
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/* Offset to array of init functions, 0 if none. */ |
int init_offset; |
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/* Offset to array of fini functions, 0 if none. */ |
int fini_offset; |
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/* Size of __RTINIT_DESCRIPTOR. This value should be used instead of |
sizeof(__RTINIT_DESCRIPTOR). */ |
int __rtinit_descriptor_size; |
}; |
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#define RTINIT_DESCRIPTOR_SIZE (12) |
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struct __rtinit_descriptor |
{ |
/* Init/fini function. */ |
int f; |
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/* Offset, relative to the start of the __rtinit symbol, to name of the |
function. */ |
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int name_offset; |
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/* Flags */ |
unsigned char flags; |
}; |
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/* Archive */ |
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#define XCOFFARMAG "<aiaff>\012" |
#define XCOFFARMAGBIG "<bigaf>\012" |
#define SXCOFFARMAG 8 |
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/* The size of the ascii archive elements */ |
#define XCOFFARMAG_ELEMENT_SIZE 12 |
#define XCOFFARMAGBIG_ELEMENT_SIZE 20 |
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/* This terminates an XCOFF archive member name. */ |
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#define XCOFFARFMAG "`\012" |
#define SXCOFFARFMAG 2 |
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/* XCOFF archives start with this (printable) structure. */ |
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struct xcoff_ar_file_hdr |
{ |
/* Magic string. */ |
char magic[SXCOFFARMAG]; |
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/* Offset of the member table (decimal ASCII string). */ |
char memoff[XCOFFARMAG_ELEMENT_SIZE]; |
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/* Offset of the global symbol table (decimal ASCII string). */ |
char symoff[XCOFFARMAG_ELEMENT_SIZE]; |
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/* Offset of the first member in the archive (decimal ASCII string). */ |
char firstmemoff[XCOFFARMAG_ELEMENT_SIZE]; |
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/* Offset of the last member in the archive (decimal ASCII string). */ |
char lastmemoff[XCOFFARMAG_ELEMENT_SIZE]; |
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/* Offset of the first member on the free list (decimal ASCII |
string). */ |
char freeoff[XCOFFARMAG_ELEMENT_SIZE]; |
}; |
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#define SIZEOF_AR_FILE_HDR (SXCOFFARMAG + 5 * XCOFFARMAG_ELEMENT_SIZE) |
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/* This is the equivalent data structure for the big archive format. */ |
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struct xcoff_ar_file_hdr_big |
{ |
/* Magic string. */ |
char magic[SXCOFFARMAG]; |
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/* Offset of the member table (decimal ASCII string). */ |
char memoff[XCOFFARMAGBIG_ELEMENT_SIZE]; |
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/* Offset of the global symbol table for 32-bit objects (decimal ASCII |
string). */ |
char symoff[XCOFFARMAGBIG_ELEMENT_SIZE]; |
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/* Offset of the global symbol table for 64-bit objects (decimal ASCII |
string). */ |
char symoff64[XCOFFARMAGBIG_ELEMENT_SIZE]; |
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/* Offset of the first member in the archive (decimal ASCII string). */ |
char firstmemoff[XCOFFARMAGBIG_ELEMENT_SIZE]; |
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/* Offset of the last member in the archive (decimal ASCII string). */ |
char lastmemoff[XCOFFARMAGBIG_ELEMENT_SIZE]; |
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/* Offset of the first member on the free list (decimal ASCII |
string). */ |
char freeoff[XCOFFARMAGBIG_ELEMENT_SIZE]; |
}; |
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#define SIZEOF_AR_FILE_HDR_BIG (SXCOFFARMAG + 6 * XCOFFARMAGBIG_ELEMENT_SIZE) |
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/* Each XCOFF archive member starts with this (printable) structure. */ |
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struct xcoff_ar_hdr |
{ |
/* File size not including the header (decimal ASCII string). */ |
char size[XCOFFARMAG_ELEMENT_SIZE]; |
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/* File offset of next archive member (decimal ASCII string). */ |
char nextoff[XCOFFARMAG_ELEMENT_SIZE]; |
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/* File offset of previous archive member (decimal ASCII string). */ |
char prevoff[XCOFFARMAG_ELEMENT_SIZE]; |
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/* File mtime (decimal ASCII string). */ |
char date[12]; |
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/* File UID (decimal ASCII string). */ |
char uid[12]; |
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/* File GID (decimal ASCII string). */ |
char gid[12]; |
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/* File mode (octal ASCII string). */ |
char mode[12]; |
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/* Length of file name (decimal ASCII string). */ |
char namlen[4]; |
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/* This structure is followed by the file name. The length of the |
name is given in the namlen field. If the length of the name is |
odd, the name is followed by a null byte. The name and optional |
null byte are followed by XCOFFARFMAG, which is not included in |
namlen. The contents of the archive member follow; the number of |
bytes is given in the size field. */ |
}; |
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#define SIZEOF_AR_HDR (3 * XCOFFARMAG_ELEMENT_SIZE + 4 * 12 + 4) |
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/* The equivalent for the big archive format. */ |
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struct xcoff_ar_hdr_big |
{ |
/* File size not including the header (decimal ASCII string). */ |
char size[XCOFFARMAGBIG_ELEMENT_SIZE]; |
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/* File offset of next archive member (decimal ASCII string). */ |
char nextoff[XCOFFARMAGBIG_ELEMENT_SIZE]; |
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/* File offset of previous archive member (decimal ASCII string). */ |
char prevoff[XCOFFARMAGBIG_ELEMENT_SIZE]; |
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/* File mtime (decimal ASCII string). */ |
char date[12]; |
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/* File UID (decimal ASCII string). */ |
char uid[12]; |
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/* File GID (decimal ASCII string). */ |
char gid[12]; |
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/* File mode (octal ASCII string). */ |
char mode[12]; |
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/* Length of file name (decimal ASCII string). */ |
char namlen[4]; |
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/* This structure is followed by the file name. The length of the |
name is given in the namlen field. If the length of the name is |
odd, the name is followed by a null byte. The name and optional |
null byte are followed by XCOFFARFMAG, which is not included in |
namlen. The contents of the archive member follow; the number of |
bytes is given in the size field. */ |
}; |
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#define SIZEOF_AR_HDR_BIG (3 * XCOFFARMAGBIG_ELEMENT_SIZE + 4 * 12 + 4) |
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/* We often have to distinguish between the old and big file format. |
Make it a bit cleaner. We can use `xcoff_ardata' here because the |
`hdr' member has the same size and position in both formats. |
<bigaf> is the default format, return TRUE even when xcoff_ardata is |
NULL. */ |
#ifndef SMALL_ARCHIVE |
/* Creates big archives by default */ |
#define xcoff_big_format_p(abfd) \ |
((NULL != bfd_ardata (abfd) && NULL == xcoff_ardata (abfd)) || \ |
((NULL != bfd_ardata (abfd)) && \ |
(NULL != xcoff_ardata (abfd)) && \ |
(xcoff_ardata (abfd)->magic[1] == 'b'))) |
#else |
/* Creates small archives by default. */ |
#define xcoff_big_format_p(abfd) \ |
(((NULL != bfd_ardata (abfd)) && \ |
(NULL != xcoff_ardata (abfd)) && \ |
(xcoff_ardata (abfd)->magic[1] == 'b'))) |
#endif |
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/* We store a copy of the xcoff_ar_file_hdr in the tdata field of the |
artdata structure. Similar for the big archive. */ |
#define xcoff_ardata(abfd) \ |
((struct xcoff_ar_file_hdr *) bfd_ardata (abfd)->tdata) |
#define xcoff_ardata_big(abfd) \ |
((struct xcoff_ar_file_hdr_big *) bfd_ardata (abfd)->tdata) |
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/* We store a copy of the xcoff_ar_hdr in the arelt_data field of an |
archive element. Similar for the big archive. */ |
#define arch_eltdata(bfd) ((struct areltdata *) ((bfd)->arelt_data)) |
#define arch_xhdr(bfd) \ |
((struct xcoff_ar_hdr *) arch_eltdata (bfd)->arch_header) |
#define arch_xhdr_big(bfd) \ |
((struct xcoff_ar_hdr_big *) arch_eltdata (bfd)->arch_header) |
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/* True if symbols of class CLASS are external. */ |
#define EXTERN_SYM_P(CLASS) \ |
((CLASS) == C_EXT || (CLASS) == C_AIX_WEAKEXT) |
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#endif /* _INTERNAL_XCOFF_H */ |