1 /* HP PA-RISC SOM object file format: definitions internal to BFD.
2 Copyright (C) 1990-1991 Free Software Foundation, Inc.
4 Contributed by the Center for Software Science at the
5 University of Utah (pa-gdb-bugs@cs.utah.edu).
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
26 #include "../bfd/sysdep.h"
34 /* BSD uses a completely different scheme for object file identification.
35 so for now, define _PA_RISC_ID to accept any random value for a model
38 #define _PA_RISC_ID(__m_num) 1
39 #endif /* HOST_HPPABSD */
41 #define FILE_HDR_SIZE sizeof(struct header)
42 #define AUX_HDR_SIZE sizeof(struct som_exec_auxhdr)
44 typedef struct som_symbol
50 unsigned int som_type;
52 /* Structured like the ELF tc_data union. Allows more code sharing
56 unsigned int hppa_arg_reloc;
61 /* Index of this symbol in the symbol table. Only used when
62 building relocation streams for incomplete objects. */
65 /* How many times this symbol is used in a relocation. By sorting
66 the symbols from most used to least used we can significantly
67 reduce the size of the relocation stream for incomplete objects. */
70 /* The unwind descriptor bits associated with R_ENTRY relocations
71 for functions (not enough room in a BFD reloc to store all the
72 information, so we tack it onto the symbol associated with the
80 struct header *file_hdr;
81 struct copyright_aux_hdr *copyright_aux_hdr;
82 struct user_string_aux_hdr *version_aux_hdr;
83 som_symbol_type *symtab;
86 /* We remember these offsets so that after check_file_format, we have
87 no dependencies on the particular format of the exec_hdr. */
91 file_ptr reloc_filepos;
93 unsigned stringtab_size;
96 struct som_data_struct
101 /* Used to keep extra SOM specific information for a given section.
103 reloc_size holds the size of the relocation stream, note this
104 is very different from the number of relocations as SOM relocations
107 reloc_stream is the actual stream of relocation entries.
109 The BFD section index may not exactly match a SOM subspace index,
110 for this reason we keep track of the original SOM subspace index
111 when a subspace is turned into a BFD section. */
113 struct som_section_data_struct
115 unsigned int reloc_size;
117 unsigned int subspace_index;
118 asection *containing_space;
120 struct space_dictionary_record space_dict;
122 struct subspace_dictionary_record subspace_dict;
125 #define somdata(bfd) ((bfd)->tdata.som_data->a)
126 #define obj_som_file_hdr(bfd) (somdata(bfd).file_hdr)
127 #define obj_som_copyright_hdr(bfd) (somdata(bfd).copyright_aux_hdr)
128 #define obj_som_version_hdr(bfd) (somdata(bfd).version_aux_hdr)
129 #define obj_som_symtab(bfd) (somdata(bfd).symtab)
130 #define obj_som_stringtab(bfd) (somdata(bfd).stringtab)
131 #define obj_som_sym_filepos(bfd) (somdata(bfd).sym_filepos)
132 #define obj_som_str_filepos(bfd) (somdata(bfd).str_filepos)
133 #define obj_som_stringtab_size(bfd) (somdata(bfd).stringtab_size)
134 #define obj_som_reloc_filepos(bfd) (somdata(bfd).reloc_filepos)
135 #define som_section_data(sec) \
136 ((struct som_section_data_struct *)sec->used_by_bfd)
137 #define som_symbol_data(symbol) \
138 (((som_symbol_type **) symbol->udata))
141 /* Defines groups of basic relocations. FIXME: These should
142 be the only basic relocations created by GAS. The rest
143 should be internal to the BFD backend.
145 The idea is both SOM and ELF define these basic relocation
146 types so they map into a SOM or ELF specific reloation as
147 appropriate. This allows GAS to share much more code
148 between the two object formats. */
150 #define R_HPPA_NONE R_NO_RELOCATION
151 #define R_HPPA R_CODE_ONE_SYMBOL
152 #define R_HPPA_ABS_CALL R_ABS_CALL
153 #define R_HPPA_PCREL_CALL R_PCREL_CALL
154 #define R_HPPA_GOTOFF R_DP_RELATIVE
155 #define R_HPPA_COMPLEX R_COMP1
156 #define R_HPPA_COMPLEX_PCREL_CALL R_COMP2
157 #define R_HPPA_COMPLEX_ABS_CALL R_COMP3
158 #define R_HPPA_ENTRY R_ENTRY
159 #define R_HPPA_EXIT R_EXIT
161 /* Exported functions, mostly for use by GAS. */
162 void bfd_som_set_section_attributes PARAMS ((asection *, int, int,
163 unsigned char, int));
164 void bfd_som_set_subsection_attributes PARAMS ((asection *, asection *,
165 int, unsigned int, int));
166 void bfd_som_set_symbol_type PARAMS ((asymbol *, unsigned int));
167 void bfd_som_attach_unwind_info PARAMS ((asymbol *, char *));