gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / bfd / som.h

diff --git a/bfd/som.h b/bfd/som.h
index 5a7c92de3c88cb515116f64f425393642043e8bc..bf983c124657d539d77c8b4f82770e6afa451c8c 100644 (file)
--- a/bfd/som.h
+++ b/bfd/som.h
@@ -1,5 +1,5 @@
 /* HP PA-RISC SOM object file format:  definitions internal to BFD.
 /* 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).
 
    Contributed by the Center for Software Science at the
    University of Utah (pa-gdb-bugs@cs.utah.edu).


@@ -8,7 +8,7 @@
 
    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
 
    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,
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,


@@ -18,19 +18,33 @@
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
 
    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
 
 
 #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.  */
 /* 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.  */


@@ -38,132 +52,194 @@
 #define _PA_RISC_ID(__m_num) 1
 #endif /* HOST_HPPABSD */
 
 #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
 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;
 
 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 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
 
 /* 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
 
 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 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
 
 /* 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
    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_PCREL_CALL               R_PCREL_CALL

+#define R_HPPA_ABS_CALL                        R_ABS_CALL

 #define        R_HPPA_GOTOFF                   R_DP_RELATIVE
 #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_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.  */
 
 /* 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 */
 #endif /* _SOM_H */