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Diffstat (limited to 'gcc-4.9/gcc/collect2-aix.h')
| -rw-r--r-- | gcc-4.9/gcc/collect2-aix.h | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/collect2-aix.h b/gcc-4.9/gcc/collect2-aix.h new file mode 100644 index 000000000..953b87784 --- /dev/null +++ b/gcc-4.9/gcc/collect2-aix.h @@ -0,0 +1,302 @@ +/* AIX cross support for collect2. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC 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, or (at your option) any later +version. + +GCC 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 GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +/* collect2-aix.c requires mmap support. It should otherwise be + fairly portable. */ +#if defined(CROSS_DIRECTORY_STRUCTURE) \ + && defined(TARGET_AIX_VERSION) \ + && HAVE_MMAP + +#define CROSS_AIX_SUPPORT 1 + +/* ------------------------------------------------------------------------- + Definitions adapted from bfd. (Fairly heavily adapted in some cases.) + ------------------------------------------------------------------------- */ + +/* Compatibility types for bfd. */ +typedef unsigned HOST_WIDE_INT bfd_vma; + +/* The size of an archive's fl_magic field. */ +#define FL_MAGIC_SIZE 8 + +/* The expected contents of fl_magic for big archives. */ +#define FL_MAGIC_BIG_AR "<bigaf>\012" + +/* The size of each offset string in the header of a big archive. */ +#define AR_BIG_OFFSET_SIZE 20 + +/* The format of the file header in a "big" XCOFF archive. */ +struct external_big_ar_filehdr +{ + /* Magic string. */ + char fl_magic[FL_MAGIC_SIZE]; + + /* Offset of the member table (decimal ASCII string). */ + char fl_memoff[AR_BIG_OFFSET_SIZE]; + + /* Offset of the global symbol table for 32-bit objects (decimal ASCII + string). */ + char fl_symoff[AR_BIG_OFFSET_SIZE]; + + /* Offset of the global symbol table for 64-bit objects (decimal ASCII + string). */ + char fl_symoff64[AR_BIG_OFFSET_SIZE]; + + /* Offset of the first member in the archive (decimal ASCII string). */ + char fl_firstmemoff[AR_BIG_OFFSET_SIZE]; + + /* Offset of the last member in the archive (decimal ASCII string). */ + char fl_lastmemoff[AR_BIG_OFFSET_SIZE]; + + /* Offset of the first member on the free list (decimal ASCII + string). */ + char fl_freeoff[AR_BIG_OFFSET_SIZE]; +}; + +/* Each archive name is followed by this many bytes of magic string. */ +#define SXCOFFARFMAG 2 + +/* The format of a member header in a "big" XCOFF archive. */ +struct external_big_ar_member +{ + /* File size not including the header (decimal ASCII string). */ + char ar_size[AR_BIG_OFFSET_SIZE]; + + /* File offset of next archive member (decimal ASCII string). */ + char ar_nextoff[AR_BIG_OFFSET_SIZE]; + + /* File offset of previous archive member (decimal ASCII string). */ + char ar_prevoff[AR_BIG_OFFSET_SIZE]; + + /* File mtime (decimal ASCII string). */ + char ar_date[12]; + + /* File UID (decimal ASCII string). */ + char ar_uid[12]; + + /* File GID (decimal ASCII string). */ + char ar_gid[12]; + + /* File mode (octal ASCII string). */ + char ar_mode[12]; + + /* Length of file name (decimal ASCII string). */ + char ar_namlen[4]; + + /* 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. */ +}; + +/* The known values of f_magic in an XCOFF file header. */ +#define U802WRMAGIC 0730 /* Writeable text segments. */ +#define U802ROMAGIC 0735 /* Readonly sharable text segments. */ +#define U802TOCMAGIC 0737 /* Readonly text segments and TOC. */ +#define U803XTOCMAGIC 0757 /* Aix 4.3 64-bit XCOFF. */ +#define U64_TOCMAGIC 0767 /* AIX 5+ 64-bit XCOFF. */ + +/* The number of bytes in an XCOFF file's f_magic field. */ +#define F_MAGIC_SIZE 2 + +/* The format of a 32-bit XCOFF file header. */ +struct external_filehdr_32 +{ + /* The magic number. */ + char f_magic[F_MAGIC_SIZE]; + + /* The number of sections. */ + char f_nscns[2]; + + /* Time & date stamp. */ + char f_timdat[4]; + + /* The offset of the symbol table from the start of the file. */ + char f_symptr[4]; + + /* The number of entries in the symbol table. */ + char f_nsyms[4]; + + /* The size of the auxiliary header. */ + char f_opthdr[2]; + + /* Flags. */ + char f_flags[2]; +}; + +/* The format of a 64-bit XCOFF file header. */ +struct external_filehdr_64 +{ + /* The magic number. */ + char f_magic[F_MAGIC_SIZE]; + + /* The number of sections. */ + char f_nscns[2]; + + /* Time & date stamp. */ + char f_timdat[4]; + + /* The offset of the symbol table from the start of the file. */ + char f_symptr[8]; + + /* The size of the auxiliary header. */ + char f_opthdr[2]; + + /* Flags. */ + char f_flags[2]; + + /* The number of entries in the symbol table. */ + char f_nsyms[4]; +}; + +/* An internal representation of the XCOFF file header. */ +struct internal_filehdr +{ + unsigned short f_magic; + unsigned short f_nscns; + long f_timdat; + bfd_vma f_symptr; + long f_nsyms; + unsigned short f_opthdr; + unsigned short f_flags; +}; + +/* Symbol classes have their names in the debug section if this flag + is set. */ +#define DBXMASK 0x80 + +/* The format of an XCOFF symbol-table entry. */ +struct external_syment +{ + union { + struct { + union { + /* The name of the symbol. There is an implicit null character + after the end of the array. */ + char n_name[8]; + struct { + /* If n_zeroes is zero, n_offset is the offset the name from + the start of the string table. */ + char n_zeroes[4]; + char n_offset[4]; + } u; + } u; + + /* The symbol's value. */ + char n_value[4]; + } xcoff32; + struct { + /* The symbol's value. */ + char n_value[8]; + + /* The offset of the symbol from the start of the string table. */ + char n_offset[4]; + } xcoff64; + } u; + + /* The number of the section to which this symbol belongs. */ + char n_scnum[2]; + + /* The type of symbol. (It can be interpreted as an n_lang + and an n_cpu byte, but we don't care about that here.) */ + char n_type[2]; + + /* The class of symbol (a C_* value). */ + char n_sclass[1]; + + /* The number of auxiliary symbols attached to this entry. */ + char n_numaux[1]; +}; + +/* Definitions required by collect2. */ +#define C_EXT 2 + +#define F_SHROBJ 0x2000 +#define F_LOADONLY 0x4000 + +#define N_UNDEF ((short) 0) +#define N_TMASK 060 +#define N_BTSHFT 4 + +#define DT_NON 0 +#define DT_FCN 2 + +/* ------------------------------------------------------------------------- + Local code. + ------------------------------------------------------------------------- */ + +/* An internal representation of an XCOFF symbol-table entry, + which is associated with the API-defined SYMENT type. */ +struct internal_syment +{ + char n_name[9]; + unsigned int n_zeroes; + bfd_vma n_offset; + bfd_vma n_value; + short n_scnum; + unsigned short n_flags; + unsigned short n_type; + unsigned char n_sclass; + unsigned char n_numaux; +}; +typedef struct internal_syment SYMENT; + +/* The internal representation of the API-defined LDFILE type. */ +struct internal_ldfile +{ + /* The file handle for the associated file, or -1 if it hasn't been + opened yet. */ + int fd; + + /* The start of the current XCOFF object, if one has been mapped + into memory. Null otherwise. */ + char *object; + + /* The offset of OBJECT from the start of the containing page. */ + size_t page_offset; + + /* The size of the file pointed to by OBJECT. Valid iff OFFSET + is nonnull. */ + size_t object_size; + + /* The offset of the next member in an archive after OBJECT, + or -1 if this isn't an archive. Valid iff OFFSET is nonnull. */ + off_t next_member; + + /* The parsed version of the XCOFF file header. */ + struct internal_filehdr filehdr; +}; +typedef struct internal_ldfile LDFILE; + +/* The API allows the file header to be directly accessed via this macro. */ +#define HEADER(FILE) ((FILE)->filehdr) + +/* API-defined return codes. SUCCESS must be > 0 and FAILURE must be <= 0. */ +#define SUCCESS 1 +#define FAILURE 0 + +/* API-defined functions. */ +extern LDFILE *ldopen (char *, LDFILE *); +extern char *ldgetname (LDFILE *, SYMENT *); +extern int ldtbread (LDFILE *, long, SYMENT *); +extern int ldclose (LDFILE *); + +#endif |