--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/collect2-aix.h	Fri Feb 12 23:39:51 2010 +0900
@@ -0,0 +1,301 @@
+/* AIX cross support for collect2.
+   Copyright (C) 2009 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.)
+   ------------------------------------------------------------------------- */
+
+/* Compatiblity 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 auxillary 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 auxillary 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 auxillary symbols attached to this entry.  */
+  char n_numaux[1];
+};
+
+/* Definitions required by collect2.  */
+#define C_EXT 2
+
+#define F_SHROBJ 0x2000
+
+#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