/* HP PA-RISC SOM object file format: definitions internal to BFD.
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
+ Copyright (C) 1990-2020 Free Software Foundation, Inc.
Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#ifndef _SOM_H
#define _SOM_H
-#include "../bfd/sysdep.h"
+#include "libhppa.h"
-#include <a.out.h>
-#include <lst.h>
-#include <ar.h>
+/* We want reloc.h to provide PA 2.0 defines. */
+#define PA_2_0
+#include "som/aout.h"
+#include "som/lst.h"
+#include "som/internal.h"
-#ifdef HOST_HPPABSD
+/* The SOM BFD backend doesn't currently use anything from these
+ two include files, but it's likely to need them in the future. */
+#ifdef R_DLT_REL
+#include <shl.h>
+#include <dl.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined (HOST_HPPABSD) || defined (HOST_HPPAOSF)
/* BSD uses a completely different scheme for object file identification.
so for now, define _PA_RISC_ID to accept any random value for a model
number. */
#define _PA_RISC_ID(__m_num) 1
#endif /* HOST_HPPABSD */
-#define FILE_HDR_SIZE sizeof(struct header)
-#define AUX_HDR_SIZE sizeof(struct som_exec_auxhdr)
-
typedef struct som_symbol
+{
+ asymbol symbol;
+ unsigned int som_type;
+
+ /* Structured like the ELF tc_data union. Allows more code sharing
+ in GAS this way. */
+ union
{
- asymbol symbol;
- short desc;
- char other;
- unsigned char type;
- unsigned int som_type;
-
- /* Structured like the ELF tc_data union. Allows more code sharing
- in GAS this way. */
- union
- {
- unsigned int hppa_arg_reloc;
- PTR any;
- }
- tc_data;
-
- /* Index of this symbol in the symbol table. Only used when
- building relocation streams for incomplete objects. */
- int index;
-
- /* How many times this symbol is used in a relocation. By sorting
- the symbols from most used to least used we can significantly
- reduce the size of the relocation stream for incomplete objects. */
- int reloc_count;
-
- /* The unwind descriptor bits associated with R_ENTRY relocations
- for functions (not enough room in a BFD reloc to store all the
- information, so we tack it onto the symbol associated with the
- function. */
- char *unwind;
+ struct
+ {
+ unsigned int hppa_arg_reloc;
+ unsigned int hppa_priv_level;
+ } ap;
+ void * any;
}
+ tc_data;
+
+ /* Index of this symbol in the symbol table. Only used when
+ building relocation streams for incomplete objects. */
+ int index;
+
+ /* How many times this symbol is used in a relocation. By sorting
+ the symbols from most used to least used we can significantly
+ reduce the size of the relocation stream for incomplete objects. */
+ int reloc_count;
+
+ /* During object file writing, the offset of the name of this symbol
+ in the SOM string table. */
+ int stringtab_offset;
+}
som_symbol_type;
-struct somdata
- {
- struct header *file_hdr;
- struct copyright_aux_hdr *copyright_aux_hdr;
- struct user_string_aux_hdr *version_aux_hdr;
- som_symbol_type *symtab;
- char *stringtab;
+/* A structure containing all the magic information stored in a BFD's
+ private data which needs to be copied during an objcopy/strip run. */
+struct som_exec_data
+{
+ /* Sort-of a magic number. BSD uses it to distinguish between
+ native executables and hpux executables. */
+ short system_id;
+
+ /* Magic exec flags. These control things like whether or not
+ null pointer dereferencing is allowed and the like. */
+ long exec_flags;
- /* We remember these offsets so that after check_file_format, we have
- no dependencies on the particular format of the exec_hdr. */
+ /* We must preserve the version identifier too. Some versions
+ of the HP linker do not grok NEW_VERSION_ID for reasons unknown. */
+ unsigned int version_id;
- file_ptr sym_filepos;
- file_ptr str_filepos;
- file_ptr reloc_filepos;
+ /* Add more stuff here as needed. Good examples of information
+ we might want to pass would be presumed_dp, entry_* and maybe
+ others from the file header. */
+};
- unsigned stringtab_size;
- };
+struct somdata
+{
+ /* All the magic information about an executable which lives
+ in the private BFD structure and needs to be copied from
+ the input bfd to the output bfd during an objcopy/strip. */
+ struct som_exec_data *exec_data;
+
+ /* These three fields are only used when writing files and are
+ generated from scratch. They need not be copied for objcopy
+ or strip to work. */
+ struct som_header *file_hdr;
+ struct som_string_auxhdr *copyright_aux_hdr;
+ struct som_string_auxhdr *version_aux_hdr;
+ struct som_exec_auxhdr *exec_hdr;
+ struct som_compilation_unit *comp_unit;
+
+ /* Pointers to a saved copy of the symbol and string tables. These
+ need not be copied for objcopy or strip to work. */
+ som_symbol_type *symtab;
+ char *stringtab;
+ asymbol **sorted_syms;
+
+ /* We remember these offsets so that after check_file_format, we have
+ no dependencies on the particular format of the exec_hdr.
+ These offsets need not be copied for objcopy or strip to work. */
+
+ file_ptr sym_filepos;
+ file_ptr str_filepos;
+ file_ptr reloc_filepos;
+ unsigned stringtab_size;
+ void * line_info;
+};
struct som_data_struct
- {
- struct somdata a;
- };
+{
+ struct somdata a;
+};
+
+/* Substructure of som_section_data_struct used to hold information
+ which can't be represented by the generic BFD section structure,
+ but which must be copied during objcopy or strip. */
+struct som_copyable_section_data_struct
+{
+ /* Various fields in space and subspace headers that we need
+ to pass around. */
+ unsigned int sort_key : 8;
+ unsigned int access_control_bits : 7;
+ unsigned int is_defined : 1;
+ unsigned int is_private : 1;
+ unsigned int quadrant : 2;
+ unsigned int is_comdat : 1;
+ unsigned int is_common : 1;
+ unsigned int dup_common : 1;
+
+ /* For subspaces, this points to the section which represents the
+ space in which the subspace is contained. For spaces it points
+ back to the section for this space. */
+ asection *container;
+
+ /* The user-specified space number. It is wrong to use this as
+ an index since duplicates and holes are allowed. */
+ int space_number;
+
+ /* Add more stuff here as needed. Good examples of information
+ we might want to pass would be initialization pointers,
+ and the many subspace flags we do not represent yet. */
+};
/* Used to keep extra SOM specific information for a given section.
reloc_size holds the size of the relocation stream, note this
is very different from the number of relocations as SOM relocations
- are variable length.
+ are variable length.
- reloc_stream is the actual stream of relocation entries.
-
- The BFD section index may not exactly match a SOM subspace index,
- for this reason we keep track of the original SOM subspace index
- when a subspace is turned into a BFD section. */
+ reloc_stream is the actual stream of relocation entries. */
struct som_section_data_struct
- {
- unsigned int reloc_size;
- char *reloc_stream;
- unsigned int subspace_index;
- asection *containing_space;
- int is_space;
- struct space_dictionary_record space_dict;
- int is_subspace;
- struct subspace_dictionary_record subspace_dict;
- };
+{
+ struct som_copyable_section_data_struct *copy_data;
+ unsigned int reloc_size;
+ unsigned char *reloc_stream;
+ struct som_space_dictionary_record *space_dict;
+ struct som_subspace_dictionary_record *subspace_dict;
+};
#define somdata(bfd) ((bfd)->tdata.som_data->a)
-#define obj_som_file_hdr(bfd) (somdata(bfd).file_hdr)
-#define obj_som_copyright_hdr(bfd) (somdata(bfd).copyright_aux_hdr)
-#define obj_som_version_hdr(bfd) (somdata(bfd).version_aux_hdr)
-#define obj_som_symtab(bfd) (somdata(bfd).symtab)
-#define obj_som_stringtab(bfd) (somdata(bfd).stringtab)
-#define obj_som_sym_filepos(bfd) (somdata(bfd).sym_filepos)
-#define obj_som_str_filepos(bfd) (somdata(bfd).str_filepos)
-#define obj_som_stringtab_size(bfd) (somdata(bfd).stringtab_size)
-#define obj_som_reloc_filepos(bfd) (somdata(bfd).reloc_filepos)
-#define som_section_data(sec) \
- ((struct som_section_data_struct *)sec->used_by_bfd)
-#define som_symbol_data(symbol) \
- (((som_symbol_type **) symbol->udata))
-
+#define obj_som_exec_data(bfd) (somdata (bfd).exec_data)
+#define obj_som_file_hdr(bfd) (somdata (bfd).file_hdr)
+#define obj_som_exec_hdr(bfd) (somdata (bfd).exec_hdr)
+#define obj_som_copyright_hdr(bfd) (somdata (bfd).copyright_aux_hdr)
+#define obj_som_version_hdr(bfd) (somdata (bfd).version_aux_hdr)
+#define obj_som_compilation_unit(bfd) (somdata (bfd).comp_unit)
+#define obj_som_symtab(bfd) (somdata (bfd).symtab)
+#define obj_som_stringtab(bfd) (somdata (bfd).stringtab)
+#define obj_som_sym_filepos(bfd) (somdata (bfd).sym_filepos)
+#define obj_som_str_filepos(bfd) (somdata (bfd).str_filepos)
+#define obj_som_stringtab_size(bfd) (somdata (bfd).stringtab_size)
+#define obj_som_reloc_filepos(bfd) (somdata (bfd).reloc_filepos)
+#define obj_som_sorted_syms(bfd) (somdata (bfd).sorted_syms)
+#define som_section_data(sec) ((struct som_section_data_struct *) sec->used_by_bfd)
+#define som_symbol_data(symbol) ((som_symbol_type *) symbol)
/* Defines groups of basic relocations. FIXME: These should
be the only basic relocations created by GAS. The rest
should be internal to the BFD backend.
The idea is both SOM and ELF define these basic relocation
- types so they map into a SOM or ELF specific reloation as
- appropriate. This allows GAS to share much more code
+ types so they map into a SOM or ELF specific relocation as
+ appropriate. This allows GAS to share much more code
between the two object formats. */
#define R_HPPA_NONE R_NO_RELOCATION
#define R_HPPA R_CODE_ONE_SYMBOL
-#define R_HPPA_ABS_CALL R_ABS_CALL
#define R_HPPA_PCREL_CALL R_PCREL_CALL
+#define R_HPPA_ABS_CALL R_ABS_CALL
#define R_HPPA_GOTOFF R_DP_RELATIVE
-#define R_HPPA_COMPLEX R_COMP1
-#define R_HPPA_COMPLEX_PCREL_CALL R_COMP2
-#define R_HPPA_COMPLEX_ABS_CALL R_COMP3
#define R_HPPA_ENTRY R_ENTRY
#define R_HPPA_EXIT R_EXIT
+#define R_HPPA_COMPLEX R_COMP1
+#define R_HPPA_BEGIN_BRTAB R_BEGIN_BRTAB
+#define R_HPPA_END_BRTAB R_END_BRTAB
+#define R_HPPA_BEGIN_TRY R_BEGIN_TRY
+#define R_HPPA_END_TRY R_END_TRY
/* Exported functions, mostly for use by GAS. */
-void bfd_som_set_section_attributes PARAMS ((asection *, int, int,
- unsigned char, int));
-void bfd_som_set_subsection_attributes PARAMS ((asection *, asection *,
- int, unsigned int, int));
-void bfd_som_set_symbol_type PARAMS ((asymbol *, unsigned int));
-void bfd_som_attach_unwind_info PARAMS ((asymbol *, char *));
-
+bfd_boolean bfd_som_set_section_attributes (asection *, int, int, unsigned int, int);
+bfd_boolean bfd_som_set_subsection_attributes (asection *, asection *, int, unsigned int, int, int, int, int);
+void bfd_som_set_symbol_type (asymbol *, unsigned int);
+bfd_boolean bfd_som_attach_aux_hdr (bfd *, int, char *);
+int ** hppa_som_gen_reloc_type (bfd *, int, int, enum hppa_reloc_field_selector_type_alt, int, asymbol *);
+bfd_boolean bfd_som_attach_compilation_unit (bfd *, const char *, const char *, const char *, const char *);
+asection * bfd_section_from_som_symbol (bfd *abfd, struct som_external_symbol_dictionary_record *symbol);
+
+#ifdef __cplusplus
+}
+#endif
#endif /* _SOM_H */
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