/* Internal format of XCOFF object file data structures for BFD.
- Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+ Copyright (C) 1995-2021 Free Software Foundation, Inc.
Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#ifndef _INTERNAL_XCOFF_H
#define _INTERNAL_XCOFF_H
-/*
- * LINKER
- */
+/* XCOFF specific f_flags. */
-/*
- * names of "special" sections
- */
+/* File was profiled with fdpr. */
+#define F_FDPR_PROF 0x0010
+
+/* File was reordered with fdpr. */
+#define F_FDPR_OPTI 0x0020
+
+/* File use very large program support. */
+#define F_DSA 0x0040
+
+/* One aux header specifying medium page sizes is non-zero. */
+#define F_VARPG 0x0100
+
+/* Read/write sections are non-executable. */
+#define F_NONEXEC 0x8000
+
+/* Linker */
+
+/* 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"
+
+/* XCOFF uses special .dwXXX sections with the type STYP_DWARF. */
+#define STYP_DWARF 0x0010
+
+/* 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
/* XCOFF uses a special .loader section with type STYP_LOADER. */
#define STYP_LOADER 0x1000
+/* 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
+
+/* Specifies an initialized thread-local data section. */
+#define STYP_TDATA 0x0400
+
+/* Specifies an uninitialized thread-local data section. */
+#define STYP_TBSS 0x0800
+
/* XCOFF uses a special .debug section with type STYP_DEBUG. */
-#define STYP_DEBUG 0x2000
+#define STYP_DEBUG 0x2000
+
+/* 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
/* XCOFF handles line number or relocation overflow by creating
another section header with STYP_OVRFLO set. */
#define RS6K_AOUTHDR_NMAGIC 0x0108 /* new: text r/o, data r/w */
#define RS6K_AOUTHDR_ZMAGIC 0x010B /* paged: text r/o, both page-aligned */
-
/* XCOFF relocation types.
The relocations are described in the function
xcoff[64]_ppc_relocate_section in coff64-rs6000.c and coff-rs6000.c */
#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)
+/* Storage class #defines, from /usr/include/storclass.h that are not already
+ defined in internal.h */
-/*
- * Storage class #defines, from /usr/include/storclass.h
- * That are not already defined in internal.h
- */
-#define C_INFO 110 /* Comment string in .info section */
+/* Comment string in .info section */
+#define C_INFO 110
+/* Dwarf symbol. */
+#define C_DWARF 112
-/*
- * AUXILLARY SYMBOL ENTRIES
- *
- * auxemt
- */
+/* Auxillary Symbol Entries */
/* 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_US 5 /* "Reserved for internal use" */
/* 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_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 */
/* The ldhdr structure. This appears at the start of the .loader
section. */
struct internal_ldhdr
{
- /*
- * The version number:
- * 1 : 32 bit
- * 2 : 64 bit
- */
+ /* The version number:
+ 1 : 32 bit
+ 2 : 64 bit */
unsigned long l_version;
+
/* The number of symbol table entries. */
bfd_size_type l_nsyms;
+
/* The number of relocation table entries. */
bfd_size_type l_nreloc;
+
/* The length of the import file string table. */
bfd_size_type l_istlen;
+
/* The number of import files. */
bfd_size_type l_nimpid;
+
/* The offset from the start of the .loader section to the first
entry in the import file table. */
bfd_size_type l_impoff;
+
/* The length of the string table. */
bfd_size_type l_stlen;
+
/* The offset from the start of the .loader section to the first
entry in the string table. */
bfd_size_type l_stoff;
+
/* The offset to start of the symbol table, only in XCOFF64 */
bfd_vma l_symoff;
+
/* The offset to the start of the relocation table, only in XCOFF64 */
bfd_vma l_rldoff;
};
struct internal_ldsym
{
union
+ {
+ /* The symbol name if <= SYMNMLEN characters. */
+ char _l_name[SYMNMLEN];
+ struct
{
- /* The symbol name if <= SYMNMLEN characters. */
- char _l_name[SYMNMLEN];
- struct
- {
- /* Zero if the symbol name is more than SYMNMLEN characters. */
- long _l_zeroes;
- /* The offset in the string table if the symbol name is more
- than SYMNMLEN characters. */
- long _l_offset;
- } _l_l;
- } _l;
+ /* Zero if the symbol name is more than SYMNMLEN characters. */
+ long _l_zeroes;
+
+ /* The offset in the string table if the symbol name is more
+ than SYMNMLEN characters. */
+ long _l_offset;
+ }
+ _l_l;
+ }
+ _l;
+
/* The symbol value. */
bfd_vma l_value;
+
/* The symbol section number. */
short l_scnum;
+
/* The symbol type and flags. */
char l_smtype;
+
/* The symbol storage class. */
char l_smclas;
+
/* The import file ID. */
bfd_size_type l_ifile;
+
/* Offset to the parameter type check string. */
bfd_size_type l_parm;
};
#define L_ENTRY (0x20)
/* Exported symbol. */
#define L_EXPORT (0x10)
+/* Weak symbol. */
+#define L_WEAK (0x08)
/* The ldrel structure. This is used to represent a reloc in the
.loader section. */
{
/* The reloc address. */
bfd_vma l_vaddr;
+
/* The symbol table index in the .loader section symbol table. */
bfd_size_type l_symndx;
+
/* The relocation type and size. */
short l_rtype;
+
/* The section number this relocation applies to. */
short l_rsecnm;
};
asection *toc_section;
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;
- /* 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;
+ {
+ /* 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;
+
+ /* 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;
/* If this symbol is a function entry point which is called, this
field holds a pointer to the function descriptor. If this symbol
unsigned char smclas;
};
-/*
- * #define for xcoff_link_hash_entry.flags
- *
- * XCOFF_REF_REGULAR
- * Symbol is referenced by a regular object.
- *
- * XCOFF_DEF_REGULAR
- * Symbol is defined by a regular object.
- *
- * XCOFF_DEF_DYNAMIC
- * Symbol is defined by a dynamic object.
- *
- * XCOFF_LDREL
- * Symbol is used in a reloc being copied into the .loader section.
- *
- * XCOFF_ENTRY
- * Symbol is the entry point.
- *
- * XCOFF_CALLED
- * Symbol is called; this is, it appears in a R_BR reloc.
- *
- * XCOFF_SET_TOC
- * Symbol needs the TOC entry filled in.
- *
- * XCOFF_IMPORT
- * Symbol is explicitly imported.
- *
- * XCOFF_EXPORT
- * Symbol is explicitly exported.
- *
- * XCOFF_BUILT_LDSYM
- * Symbol has been processed by xcoff_build_ldsyms.
- *
- * XCOFF_MARK
- * Symbol is mentioned by a section which was not garbage collected.
- *
- * XCOFF_HAS_SIZE
- * Symbol size is recorded in size_list list from hash table.
- *
- * XCOFF_DESCRIPTOR
- * Symbol is a function descriptor.
- *
- * XCOFF_MULTIPLY_DEFINED
- * Multiple definitions have been for the symbol.
- *
- * XCOFF_RTINIT
- * Symbol is the __rtinit symbol
- *
- * XCOFF_SYSCALL32
- * Symbol is an imported 32 bit syscall
- *
- * XCOFF_SYSCALL64
- * Symbol is an imported 64 bit syscall
- */
+/* Flags for xcoff_link_hash_entry. */
+/* 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
/* The XCOFF linker hash table. */
#define XCOFF_SPECIAL_SECTION_END 4
#define XCOFF_SPECIAL_SECTION_END2 5
-struct xcoff_link_hash_table
-{
- struct bfd_link_hash_table root;
-
- /* The .debug string hash table. We need to compute this while
- reading the input files, so that we know how large the .debug
- section will be before we assign section positions. */
- struct bfd_strtab_hash *debug_strtab;
-
- /* The .debug section we will use for the final output. */
- asection *debug_section;
-
- /* The .loader section we will use for the final output. */
- asection *loader_section;
-
- /* A count of non TOC relative relocs which will need to be
- allocated in the .loader section. */
- size_t ldrel_count;
-
- /* The .loader section header. */
- struct internal_ldhdr ldhdr;
-
- /* The .gl section we use to hold global linkage code. */
- asection *linkage_section;
-
- /* The .tc section we use to hold toc entries we build for global
- linkage code. */
- asection *toc_section;
-
- /* The .ds section we use to hold function descriptors which we
- create for exported symbols. */
- asection *descriptor_section;
-
- /* The list of import files. */
- struct xcoff_import_file *imports;
-
- /* Required alignment of sections within the output file. */
- unsigned long file_align;
-
- /* Whether the .text section must be read-only. */
- boolean textro;
-
- /* Whether garbage collection was done. */
- boolean gc;
-
- /* A linked list of symbols for which we have size information. */
- struct xcoff_link_size_list
- {
- struct xcoff_link_size_list *next;
- struct xcoff_link_hash_entry *h;
- bfd_size_type size;
- } *size_list;
-
- /* Magic sections: _text, _etext, _data, _edata, _end, end. */
- asection *special_sections[XCOFF_NUMBER_OF_SPECIAL_SECTIONS];
-};
-
+/* These flags indicate which of -bexpall and -bexpfull are in effect. */
+#define XCOFF_EXPALL 1
+#define XCOFF_EXPFULL 2
/* This structure is used to pass information through
xcoff_link_hash_traverse. */
struct xcoff_loader_info
{
/* Set if a problem occurred. */
- boolean failed;
+ bfd_boolean failed;
+
/* Output BFD. */
bfd *output_bfd;
+
/* Link information structure. */
struct bfd_link_info *info;
- /* Whether all defined symbols should be exported. */
- boolean export_defineds;
+
+ /* A mask of XCOFF_EXPALL and XCOFF_EXPFULL flags. */
+ unsigned int auto_export_flags;
+
/* Number of ldsym structures. */
size_t ldsym_count;
+
/* Size of string table. */
size_t string_size;
+
/* String table. */
- bfd_byte *strings;
+ char *strings;
+
/* Allocated size of string table. */
size_t string_alc;
};
from smaller values. Start with zero, widen, *then* decrement. */
#define MINUS_ONE (((bfd_vma) 0) - 1)
+/* __rtinit, from /usr/include/rtinit.h. */
+struct __rtinit
+{
+ /* Pointer to runtime linker.
+ XXX: Is the parameter really void? */
+ int (*rtl) (void);
+
+ /* Offset to array of init functions, 0 if none. */
+ int init_offset;
+
+ /* Offset to array of fini functions, 0 if none. */
+ int fini_offset;
-/*
- * __rtinit
- * from /usr/include/rtinit.h
- */
-struct __rtinit {
- int (*rtl) PARAMS ((void)); /* Pointer to runtime linker.
- XXX: Is the parameter really void? */
- int init_offset; /* Offset to array of init functions
- (0 if none). */
- int fini_offset; /* Offset to array of fini functions
- (0 if none). */
- int __rtinit_descriptor_size; /* Size of __RTINIT_DESCRIPTOR.
- This value should be used instead
- of sizeof(__RTINIT_DESCRIPTOR). */
+ /* Size of __RTINIT_DESCRIPTOR. This value should be used instead of
+ sizeof(__RTINIT_DESCRIPTOR). */
+ int __rtinit_descriptor_size;
};
#define RTINIT_DESCRIPTOR_SIZE (12)
-struct __rtinit_descriptor {
- int f; /* Init/fini function. */
- int name_offset; /* Offset (within __rtinit symbol)
- to name of function. */
- unsigned char flags; /* Flags */
-};
+struct __rtinit_descriptor
+{
+ /* Init/fini function. */
+ int f;
+ /* Offset, relative to the start of the __rtinit symbol, to name of the
+ function. */
+ int name_offset;
+
+ /* Flags */
+ unsigned char flags;
+};
-/*
- * ARCHIVE
- */
+/* Archive */
#define XCOFFARMAG "<aiaff>\012"
#define XCOFFARMAGBIG "<bigaf>\012"
#define SXCOFFARMAG 8
+/* The size of the ascii archive elements */
+#define XCOFFARMAG_ELEMENT_SIZE 12
+#define XCOFFARMAGBIG_ELEMENT_SIZE 20
+
/* This terminates an XCOFF archive member name. */
#define XCOFFARFMAG "`\012"
char magic[SXCOFFARMAG];
/* Offset of the member table (decimal ASCII string). */
- char memoff[12];
+ char memoff[XCOFFARMAG_ELEMENT_SIZE];
/* Offset of the global symbol table (decimal ASCII string). */
- char symoff[12];
+ char symoff[XCOFFARMAG_ELEMENT_SIZE];
/* Offset of the first member in the archive (decimal ASCII string). */
- char firstmemoff[12];
+ char firstmemoff[XCOFFARMAG_ELEMENT_SIZE];
/* Offset of the last member in the archive (decimal ASCII string). */
- char lastmemoff[12];
+ char lastmemoff[XCOFFARMAG_ELEMENT_SIZE];
/* Offset of the first member on the free list (decimal ASCII
string). */
- char freeoff[12];
+ char freeoff[XCOFFARMAG_ELEMENT_SIZE];
};
-#define SIZEOF_AR_FILE_HDR (5 * 12 + SXCOFFARMAG)
+#define SIZEOF_AR_FILE_HDR (SXCOFFARMAG + 5 * XCOFFARMAG_ELEMENT_SIZE)
/* This is the equivalent data structure for the big archive format. */
char magic[SXCOFFARMAG];
/* Offset of the member table (decimal ASCII string). */
- char memoff[20];
+ char memoff[XCOFFARMAGBIG_ELEMENT_SIZE];
/* Offset of the global symbol table for 32-bit objects (decimal ASCII
string). */
- char symoff[20];
+ char symoff[XCOFFARMAGBIG_ELEMENT_SIZE];
/* Offset of the global symbol table for 64-bit objects (decimal ASCII
string). */
- char symoff64[20];
+ char symoff64[XCOFFARMAGBIG_ELEMENT_SIZE];
/* Offset of the first member in the archive (decimal ASCII string). */
- char firstmemoff[20];
+ char firstmemoff[XCOFFARMAGBIG_ELEMENT_SIZE];
/* Offset of the last member in the archive (decimal ASCII string). */
- char lastmemoff[20];
+ char lastmemoff[XCOFFARMAGBIG_ELEMENT_SIZE];
/* Offset of the first member on the free list (decimal ASCII
string). */
- char freeoff[20];
+ char freeoff[XCOFFARMAGBIG_ELEMENT_SIZE];
};
-#define SIZEOF_AR_FILE_HDR_BIG (6 * 20 + SXCOFFARMAG)
-
+#define SIZEOF_AR_FILE_HDR_BIG (SXCOFFARMAG + 6 * XCOFFARMAGBIG_ELEMENT_SIZE)
/* Each XCOFF archive member starts with this (printable) structure. */
struct xcoff_ar_hdr
{
/* File size not including the header (decimal ASCII string). */
- char size[12];
+ char size[XCOFFARMAG_ELEMENT_SIZE];
/* File offset of next archive member (decimal ASCII string). */
- char nextoff[12];
+ char nextoff[XCOFFARMAG_ELEMENT_SIZE];
/* File offset of previous archive member (decimal ASCII string). */
- char prevoff[12];
+ char prevoff[XCOFFARMAG_ELEMENT_SIZE];
/* File mtime (decimal ASCII string). */
char date[12];
bytes is given in the size field. */
};
-#define SIZEOF_AR_HDR (7 * 12 + 4)
+#define SIZEOF_AR_HDR (3 * XCOFFARMAG_ELEMENT_SIZE + 4 * 12 + 4)
/* The equivalent for the big archive format. */
struct xcoff_ar_hdr_big
{
/* File size not including the header (decimal ASCII string). */
- char size[20];
+ char size[XCOFFARMAGBIG_ELEMENT_SIZE];
/* File offset of next archive member (decimal ASCII string). */
- char nextoff[20];
+ char nextoff[XCOFFARMAGBIG_ELEMENT_SIZE];
/* File offset of previous archive member (decimal ASCII string). */
- char prevoff[20];
+ char prevoff[XCOFFARMAGBIG_ELEMENT_SIZE];
/* File mtime (decimal ASCII string). */
char date[12];
bytes is given in the size field. */
};
-#define SIZEOF_AR_HDR_BIG (3 * 20 + 4 * 12 + 4)
+#define SIZEOF_AR_HDR_BIG (3 * XCOFFARMAGBIG_ELEMENT_SIZE + 4 * 12 + 4)
/* 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. */
+ `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) \
- (xcoff_ardata (abfd)->magic[1] == 'b')
+ ((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
/* We store a copy of the xcoff_ar_file_hdr in the tdata field of the
artdata structure. Similar for the big archive. */
#define arch_xhdr_big(bfd) \
((struct xcoff_ar_hdr_big *) arch_eltdata (bfd)->arch_header)
+/* True if symbols of class CLASS are external. */
+#define EXTERN_SYM_P(CLASS) \
+ ((CLASS) == C_EXT || (CLASS) == C_AIX_WEAKEXT)
+
#endif /* _INTERNAL_XCOFF_H */
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