Support for xcoff64

1 files changed, 617 insertions, 0 deletions

diff --git a/include/coff/xcoff.h b/include/coff/xcoff.h
new file mode 100644
index 0000000..bc1ee5c
--- /dev/null
+++ b/include/coff/xcoff.h
@@ -0,0 +1,617 @@
+/* Internal format of XCOFF object file data structures for BFD.
+
+   Copyright 1995, 1996, 1997, 1998, 1999, 2000 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
+   (at your option) any later version.
+   
+   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _INTERNAL_XCOFF_H
+#define _INTERNAL_XCOFF_H
+
+/*
+ * LINKER
+ */
+
+/*
+ * names of "special" sections
+ */
+#define _TEXT	".text"
+#define _DATA	".data"
+#define _BSS	".bss"
+#define _PAD	".pad"
+#define _LOADER	".loader"
+
+/* XCOFF uses a special .loader section with type STYP_LOADER.  */
+#define STYP_LOADER 0x1000
+
+/* XCOFF uses a special .debug section with type STYP_DEBUG.  */
+#define STYP_DEBUG 0x2000
+
+/* XCOFF handles line number or relocation overflow by creating
+   another section header with STYP_OVRFLO set.  */
+#define STYP_OVRFLO 0x8000
+
+#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  */
+
+#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)
+
+
+/* 
+ * 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 */
+
+
+/* 
+ * AUXILLARY SYMBOL ENTRIES
+ *
+ * auxemt
+ */
+
+/* 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" */
+
+/* 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 */
+
+/* The ldhdr structure.  This appears at the start of the .loader
+   section.  */
+
+struct internal_ldhdr
+{
+  /* 
+   * 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;
+};
+
+/* The ldsym structure.  This is used to represent a symbol in the
+   .loader section.  */
+
+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;
+	  /* 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;
+};
+
+/* These flags are for the l_smtype field (the lower three bits are an
+   XTY_* value).  */
+
+/* Imported symbol.  */
+#define L_IMPORT (0x40)
+/* Entry point.  */
+#define L_ENTRY (0x20)
+/* Exported symbol.  */
+#define L_EXPORT (0x10)
+
+/* The ldrel structure.  This is used to represent a reloc in the
+   .loader section.  */
+
+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;
+};
+
+/* An entry in the XCOFF linker hash table.  */
+struct xcoff_link_hash_entry
+{
+  struct bfd_link_hash_entry root;
+
+  /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
+     there is a reloc against this symbol.  */
+  long indx;
+
+  /* If we have created a TOC entry for this symbol, this is the .tc
+     section which holds it.  */
+  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 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;
+
+  /* The .loader symbol table entry, if there is one.  */
+  struct internal_ldsym *ldsym;
+
+  /* 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;
+
+  /* Some linker flags.  */
+  unsigned long flags;
+
+  /* The storage mapping class.  */
+  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 
+ *
+ */
+
+#define XCOFF_REF_REGULAR      0x00000001
+#define XCOFF_DEF_REGULAR      0x00000002
+#define XCOFF_DEF_DYNAMIC      0x00000004
+#define XCOFF_LDREL            0x00000008
+#define XCOFF_ENTRY            0x00000010
+#define XCOFF_CALLED           0x00000020
+#define XCOFF_SET_TOC          0x00000040
+#define XCOFF_IMPORT           0x00000080
+#define XCOFF_EXPORT           0x00000100
+#define XCOFF_BUILT_LDSYM      0x00000200
+#define XCOFF_MARK             0x00000400
+#define XCOFF_HAS_SIZE         0x00000800
+#define XCOFF_DESCRIPTOR       0x00001000
+#define XCOFF_MULTIPLY_DEFINED 0x00002000
+#define XCOFF_RTINIT           0x00004000
+
+
+/* The XCOFF linker hash table.  */
+
+#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
+
+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];
+};
+
+
+/* This structure is used to pass information through
+   xcoff_link_hash_traverse.  */
+
+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 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 */
+};
+
+
+
+/* 
+ * ARCHIVE
+ */
+
+#define XCOFFARMAG    "<aiaff>\012"
+#define XCOFFARMAGBIG "<bigaf>\012"
+#define SXCOFFARMAG   8
+
+/* This terminates an XCOFF archive member name.  */
+
+#define XCOFFARFMAG "`\012"
+#define SXCOFFARFMAG 2
+
+/* XCOFF archives start with this (printable) structure.  */
+
+struct xcoff_ar_file_hdr
+{
+  /* Magic string.  */
+  char magic[SXCOFFARMAG];
+
+  /* Offset of the member table (decimal ASCII string).  */
+  char memoff[12];
+
+  /* Offset of the global symbol table (decimal ASCII string).  */
+  char symoff[12];
+
+  /* Offset of the first member in the archive (decimal ASCII string).  */
+  char firstmemoff[12];
+
+  /* Offset of the last member in the archive (decimal ASCII string).  */
+  char lastmemoff[12];
+
+  /* Offset of the first member on the free list (decimal ASCII
+     string).  */
+  char freeoff[12];
+};
+
+#define SIZEOF_AR_FILE_HDR (5 * 12 + SXCOFFARMAG)
+
+/* This is the equivalent data structure for the big archive format.  */
+
+struct xcoff_ar_file_hdr_big
+{
+  /* Magic string.  */
+  char magic[SXCOFFARMAG];
+
+  /* Offset of the member table (decimal ASCII string).  */
+  char memoff[20];
+
+  /* Offset of the global symbol table for 32-bit objects (decimal ASCII
+     string).  */
+  char symoff[20];
+
+  /* Offset of the global symbol table for 64-bit objects (decimal ASCII
+     string).  */
+  char symoff64[20];
+
+  /* Offset of the first member in the archive (decimal ASCII string).  */
+  char firstmemoff[20];
+
+  /* Offset of the last member in the archive (decimal ASCII string).  */
+  char lastmemoff[20];
+
+  /* Offset of the first member on the free list (decimal ASCII
+     string).  */
+  char freeoff[20];
+};
+
+#define SIZEOF_AR_FILE_HDR_BIG (6 * 20 + SXCOFFARMAG)
+
+
+/* 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];
+
+  /* File offset of next archive member (decimal ASCII string).  */
+  char nextoff[12];
+
+  /* File offset of previous archive member (decimal ASCII string).  */
+  char prevoff[12];
+
+  /* File mtime (decimal ASCII string).  */
+  char date[12];
+
+  /* File UID (decimal ASCII string).  */
+  char uid[12];
+
+  /* File GID (decimal ASCII string).  */
+  char gid[12];
+
+  /* File mode (octal ASCII string).  */
+  char mode[12];
+
+  /* Length of file name (decimal ASCII string).  */
+  char 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.  */
+};
+
+#define SIZEOF_AR_HDR (7 * 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];
+
+  /* File offset of next archive member (decimal ASCII string).  */
+  char nextoff[20];
+
+  /* File offset of previous archive member (decimal ASCII string).  */
+  char prevoff[20];
+
+  /* File mtime (decimal ASCII string).  */
+  char date[12];
+
+  /* File UID (decimal ASCII string).  */
+  char uid[12];
+
+  /* File GID (decimal ASCII string).  */
+  char gid[12];
+
+  /* File mode (octal ASCII string).  */
+  char mode[12];
+
+  /* Length of file name (decimal ASCII string).  */
+  char 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.  */
+};
+
+#define SIZEOF_AR_HDR_BIG (3 * 20 + 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.  */
+#define xcoff_big_format_p(abfd) \
+  (xcoff_ardata (abfd)->magic[1] == 'b')
+
+/* 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)
+
+/* 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)
+
+#endif /* _INTERNAL_XCOFF_H */