/* HP PA-RISC SOM object file format: definitions internal to BFD.
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
+ Copyright (C) 1990, 91, 92, 93, 94 Free Software Foundation, Inc.
Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
#define _SOM_H
#include "../bfd/sysdep.h"
+#include "libhppa.h"
#include <a.out.h>
#include <lst.h>
#include <ar.h>
+/* 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 HOST_HPPABSD
+#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. */
typedef struct som_symbol
{
asymbol symbol;
- short desc;
- char other;
- unsigned char type;
unsigned int som_type;
/* Structured like the ELF tc_data union. Allows more code sharing
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;
+ /* During object file writing, the offset of the name of this symbol
+ in the SOM string table. */
+ int stringtab_offset;
}
som_symbol_type;
+/* 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;
+
+ /* 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. */
+ };
+
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 a 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 header *file_hdr;
struct copyright_aux_hdr *copyright_aux_hdr;
struct user_string_aux_hdr *version_aux_hdr;
+ struct som_exec_auxhdr *exec_hdr;
+
+ /* 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. */
+ 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;
};
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;
+
+ /* 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.
- 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
{
+ struct som_copyable_section_data_struct *copy_data;
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 space_dictionary_record *space_dict;
+ struct subspace_dictionary_record *subspace_dict;
};
#define somdata(bfd) ((bfd)->tdata.som_data->a)
+#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_symtab(bfd) (somdata(bfd).symtab)
#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->udata))
+#define som_symbol_data(symbol) ((som_symbol_type *) symbol)
/* Defines groups of basic relocations. FIXME: These should
#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
/* 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));
+boolean bfd_som_set_section_attributes PARAMS ((asection *, int, int,
+ unsigned int, int));
+boolean 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 *));
-
+boolean bfd_som_attach_aux_hdr PARAMS ((bfd *, int, char *));
+int ** hppa_som_gen_reloc_type
+ PARAMS ((bfd *, int, int, enum hppa_reloc_field_selector_type_alt, int));
#endif /* _SOM_H */
projects / deliverable / binutils-gdb.git / blobdiff