diff options
Diffstat (limited to 'include/coff/xcoff.h')
| -rw-r--r-- | include/coff/xcoff.h | 320 |
1 files changed, 171 insertions, 149 deletions
diff --git a/include/coff/xcoff.h b/include/coff/xcoff.h index bc1ee5cb2..0bb9d6c1e 100644 --- a/include/coff/xcoff.h +++ b/include/coff/xcoff.h @@ -1,6 +1,7 @@ /* Internal format of XCOFF object file data structures for BFD. - Copyright 1995, 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. + Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001 + 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. @@ -22,18 +23,16 @@ #ifndef _INTERNAL_XCOFF_H #define _INTERNAL_XCOFF_H -/* - * LINKER - */ +/* Linker */ -/* - * names of "special" sections - */ +/* 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 a special .loader section with type STYP_LOADER. */ #define STYP_LOADER 0x1000 @@ -45,11 +44,19 @@ another section header with STYP_OVRFLO set. */ #define STYP_OVRFLO 0x8000 +/* 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 a type check section. A section of this type contains parameter + argument type check strings used by the AIX binder. */ +#define STYP_TYPCHK 0x4000 + #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 */ - /* XCOFF relocation types. The relocations are described in the function xcoff[64]_ppc_relocate_section in coff64-rs6000.c and coff-rs6000.c */ @@ -77,22 +84,15 @@ #define R_RBR (0x1a) #define R_RBRC (0x1b) +/* 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 - -/* - * 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: */ @@ -104,7 +104,6 @@ #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 */ @@ -122,36 +121,45 @@ /* 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 */ /* 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; }; @@ -162,28 +170,37 @@ struct internal_ldhdr 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; }; @@ -205,10 +222,13 @@ struct internal_ldrel { /* 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; }; @@ -227,14 +247,16 @@ struct xcoff_link_hash_entry 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 @@ -257,72 +279,42 @@ struct xcoff_link_hash_entry 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 - * - */ +/* 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 called; this is, it appears in a R_BR reloc. */ #define XCOFF_CALLED 0x00000020 +/* Symbol needs the TOC entry filled in. */ #define XCOFF_SET_TOC 0x00000040 +/* Symbol is 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 /* The XCOFF linker hash table. */ @@ -381,11 +373,12 @@ struct xcoff_link_hash_table /* 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; + { + 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]; @@ -399,61 +392,77 @@ struct xcoff_loader_info { /* Set if a problem occurred. */ 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; + /* Number of ldsym structures. */ size_t ldsym_count; + /* Size of string table. */ size_t string_size; + /* String table. */ bfd_byte *strings; + /* Allocated size of string table. */ size_t string_alc; }; /* 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) - - -/* - * __rtinit - * from /usr/include/rtinit.h - */ -struct __rtinit { - int (*rtl)(); /* Pointer to runtime linker */ - 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). */ +#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) PARAMS ((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; + + /* 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; -/* - * ARCHIVE - */ + /* Flags */ + unsigned char flags; +}; + +/* 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" @@ -467,23 +476,23 @@ struct xcoff_ar_file_hdr 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. */ @@ -493,42 +502,41 @@ struct xcoff_ar_file_hdr_big 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]; @@ -553,20 +561,20 @@ struct xcoff_ar_hdr 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]; @@ -591,13 +599,27 @@ struct xcoff_ar_hdr_big 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) \ + ((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) \ - (xcoff_ardata (abfd)->magic[1] == 'b') + (((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. */ |