/* Read HP PA/Risc object files for GDB.
- Copyright 1991, 1992, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002,
- 2004 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1992, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002,
+ 2004, 2007 Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support.
This file is part of GDB.
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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "bfd.h"
#include "solib-som.h"
-/* Prototypes for local functions. */
-static int init_import_symbols (struct objfile *objfile);
-
-/* FIXME: These should really be in a common header somewhere */
-
-extern void hpread_build_psymtabs (struct objfile *, int);
-
-extern void hpread_symfile_finish (struct objfile *);
-
-extern void hpread_symfile_init (struct objfile *);
-
-extern void do_pxdb (bfd *);
-
/*
LOCAL FUNCTION
number_of_symbols = bfd_get_symcount (abfd);
- /* FIXME (alloca): could be quite large. */
- buf = alloca (symsize * number_of_symbols);
+ /* Allocate a buffer to read in the debug info.
+ We avoid using alloca because the memory size could be so large
+ that we could hit the stack size limit. */
+ buf = xmalloc (symsize * number_of_symbols);
+ make_cleanup (xfree, buf);
bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET);
val = bfd_bread (buf, symsize * number_of_symbols, abfd);
if (val != symsize * number_of_symbols)
error (_("Couldn't read symbol dictionary!"));
- /* FIXME (alloca): could be quite large. */
- stringtab = alloca (obj_som_stringtab_size (abfd));
+ /* Allocate a buffer to read in the som stringtab section of
+ the debugging info. Again, we avoid using alloca because
+ the data could be so large that we could potentially hit
+ the stack size limitat. */
+ stringtab = xmalloc (obj_som_stringtab_size (abfd));
+ make_cleanup (xfree, stringtab);
bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET);
val = bfd_bread (stringtab, obj_som_stringtab_size (abfd), abfd);
if (val != obj_som_stringtab_size (abfd))
symname = bufp->name.n_strx + stringtab;
ms_type = mst_text;
bufp->symbol_value += text_offset;
- bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value);
+ bufp->symbol_value = gdbarch_smash_text_address
+ (current_gdbarch, bufp->symbol_value);
break;
case ST_ENTRY:
else
ms_type = mst_text;
bufp->symbol_value += text_offset;
- bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value);
+ bufp->symbol_value = gdbarch_smash_text_address
+ (current_gdbarch, bufp->symbol_value);
break;
case ST_STUB:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_solib_trampoline;
bufp->symbol_value += text_offset;
- bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value);
+ bufp->symbol_value = gdbarch_smash_text_address
+ (current_gdbarch, bufp->symbol_value);
break;
case ST_DATA:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_file_text;
bufp->symbol_value += text_offset;
- bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value);
+ bufp->symbol_value = gdbarch_smash_text_address
+ (current_gdbarch, bufp->symbol_value);
check_strange_names:
/* Utah GCC 2.5, FSF GCC 2.6 and later generate correct local
symname = bufp->name.n_strx + stringtab;
ms_type = mst_file_text;
bufp->symbol_value += text_offset;
- bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value);
+ bufp->symbol_value = gdbarch_smash_text_address
+ (current_gdbarch, bufp->symbol_value);
break;
case ST_ENTRY:
we do for SS_UNIVERSAL and SS_EXTERNAL symbols above. */
ms_type = mst_file_text;
bufp->symbol_value += text_offset;
- bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value);
+ bufp->symbol_value = gdbarch_smash_text_address
+ (current_gdbarch, bufp->symbol_value);
break;
case ST_STUB:
symname = bufp->name.n_strx + stringtab;
ms_type = mst_solib_trampoline;
bufp->symbol_value += text_offset;
- bufp->symbol_value = SMASH_TEXT_ADDRESS (bufp->symbol_value);
+ bufp->symbol_value = gdbarch_smash_text_address
+ (current_gdbarch, bufp->symbol_value);
break;
bfd *abfd = objfile->obfd;
struct cleanup *back_to;
- do_pxdb (symfile_bfd_open (objfile->name));
-
init_minimal_symbol_collection ();
back_to = make_cleanup_discard_minimal_symbols ();
- /* Read in the import list and the export list. Currently
- the export list isn't used; the import list is used in
- hp-symtab-read.c to handle static vars declared in other
- shared libraries. */
- init_import_symbols (objfile);
-#if 0 /* Export symbols not used today 1997-08-05 */
- init_export_symbols (objfile);
-#else
- objfile->export_list = NULL;
- objfile->export_list_size = 0;
-#endif
-
/* Process the normal SOM symbol table first.
This reads in the DNTT and string table, but doesn't
actually scan the DNTT. It does scan the linker symbol
do_cleanups (back_to);
/* Now read information from the stabs debug sections.
- This is a no-op for SOM.
- Perhaps it is intended for some kind of mixed STABS/SOM
- situation? */
+ This is emitted by gcc. */
stabsect_build_psymtabs (objfile, mainline,
"$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$");
-
- /* Now read the native debug information.
- This builds the psymtab. This used to be done via a scan of
- the DNTT, but is now done via the PXDB-built quick-lookup tables
- together with a scan of the GNTT. See hp-psymtab-read.c. */
- hpread_build_psymtabs (objfile, mainline);
-
- /* Force hppa-tdep.c to re-read the unwind descriptors. */
- objfile->deprecated_obj_private = NULL;
}
/* Initialize anything that needs initializing when a completely new symbol
{
xfree (objfile->deprecated_sym_stab_info);
}
- hpread_symfile_finish (objfile);
}
/* SOM specific initialization routine for reading symbols. */
find this causes a significant slowdown in gdb then we could
set it in the debug symbol readers only when necessary. */
objfile->flags |= OBJF_REORDERED;
- hpread_symfile_init (objfile);
}
/* SOM specific parsing routine for section offsets.
(objfile->section_offsets)->offsets[i] = text_addr;
}
}
-
-/* Read in and initialize the SOM import list which is present
- for all executables and shared libraries. The import list
- consists of the symbols that are referenced in OBJFILE but
- not defined there. (Variables that are imported are dealt
- with as "loc_indirect" vars.)
- Return value = number of import symbols read in. */
-static int
-init_import_symbols (struct objfile *objfile)
-{
- unsigned int import_list;
- unsigned int import_list_size;
- unsigned int string_table;
- unsigned int string_table_size;
- char *string_buffer;
- int i;
- int j;
- int k;
- asection *text_section; /* section handle */
- unsigned int dl_header[12]; /* SOM executable header */
-
- /* A struct for an entry in the SOM import list */
- typedef struct
- {
- int name; /* index into the string table */
- short dont_care1; /* we don't use this */
- unsigned char type; /* 0 = NULL, 2 = Data, 3 = Code, 7 = Storage, 13 = Plabel */
- unsigned int reserved2:8; /* not used */
- }
- SomImportEntry;
-
- /* We read 100 entries in at a time from the disk file. */
-#define SOM_READ_IMPORTS_NUM 100
-#define SOM_READ_IMPORTS_CHUNK_SIZE (sizeof (SomImportEntry) * SOM_READ_IMPORTS_NUM)
- SomImportEntry buffer[SOM_READ_IMPORTS_NUM];
-
- /* Initialize in case we error out */
- objfile->import_list = NULL;
- objfile->import_list_size = 0;
-
- /* It doesn't work, for some reason, to read in space $TEXT$;
- the subspace $SHLIB_INFO$ has to be used. Some BFD quirk? pai/1997-08-05 */
- text_section = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$");
- if (!text_section)
- return 0;
- /* Get the SOM executable header */
- bfd_get_section_contents (objfile->obfd, text_section, dl_header, 0, 12 * sizeof (int));
-
- /* Check header version number for 10.x HP-UX */
- /* Currently we deal only with 10.x systems; on 9.x the version # is 89060912.
- FIXME: Change for future HP-UX releases and mods to the SOM executable format */
- if (dl_header[0] != 93092112)
- return 0;
-
- import_list = dl_header[4];
- import_list_size = dl_header[5];
- if (!import_list_size)
- return 0;
- string_table = dl_header[10];
- string_table_size = dl_header[11];
- if (!string_table_size)
- return 0;
-
- /* Suck in SOM string table */
- string_buffer = (char *) xmalloc (string_table_size);
- bfd_get_section_contents (objfile->obfd, text_section, string_buffer,
- string_table, string_table_size);
-
- /* Allocate import list in the psymbol obstack; this has nothing
- to do with psymbols, just a matter of convenience. We want the
- import list to be freed when the objfile is deallocated */
- objfile->import_list
- = (ImportEntry *) obstack_alloc (&objfile->objfile_obstack,
- import_list_size * sizeof (ImportEntry));
-
- /* Read in the import entries, a bunch at a time */
- for (j = 0, k = 0;
- j < (import_list_size / SOM_READ_IMPORTS_NUM);
- j++)
- {
- bfd_get_section_contents (objfile->obfd, text_section, buffer,
- import_list + j * SOM_READ_IMPORTS_CHUNK_SIZE,
- SOM_READ_IMPORTS_CHUNK_SIZE);
- for (i = 0; i < SOM_READ_IMPORTS_NUM; i++, k++)
- {
- if (buffer[i].type != (unsigned char) 0)
- {
- objfile->import_list[k]
- = (char *) obstack_alloc (&objfile->objfile_obstack, strlen (string_buffer + buffer[i].name) + 1);
- strcpy (objfile->import_list[k], string_buffer + buffer[i].name);
- /* Some day we might want to record the type and other information too */
- }
- else /* null type */
- objfile->import_list[k] = NULL;
-
- }
- }
-
- /* Get the leftovers */
- if (k < import_list_size)
- bfd_get_section_contents (objfile->obfd, text_section, buffer,
- import_list + k * sizeof (SomImportEntry),
- (import_list_size - k) * sizeof (SomImportEntry));
- for (i = 0; k < import_list_size; i++, k++)
- {
- if (buffer[i].type != (unsigned char) 0)
- {
- objfile->import_list[k]
- = (char *) obstack_alloc (&objfile->objfile_obstack, strlen (string_buffer + buffer[i].name) + 1);
- strcpy (objfile->import_list[k], string_buffer + buffer[i].name);
- /* Some day we might want to record the type and other information too */
- }
- else
- objfile->import_list[k] = NULL;
- }
-
- objfile->import_list_size = import_list_size;
- xfree (string_buffer);
- return import_list_size;
-}
-
-/* Read in and initialize the SOM export list which is present
- for all executables and shared libraries. The import list
- consists of the symbols that are referenced in OBJFILE but
- not defined there. (Variables that are imported are dealt
- with as "loc_indirect" vars.)
- Return value = number of import symbols read in. */
-int
-init_export_symbols (struct objfile *objfile)
-{
- unsigned int export_list;
- unsigned int export_list_size;
- unsigned int string_table;
- unsigned int string_table_size;
- char *string_buffer;
- int i;
- int j;
- int k;
- asection *text_section; /* section handle */
- unsigned int dl_header[12]; /* SOM executable header */
-
- /* A struct for an entry in the SOM export list */
- typedef struct
- {
- int next; /* for hash table use -- we don't use this */
- int name; /* index into string table */
- int value; /* offset or plabel */
- int dont_care1; /* not used */
- unsigned char type; /* 0 = NULL, 2 = Data, 3 = Code, 7 = Storage, 13 = Plabel */
- char dont_care2; /* not used */
- short dont_care3; /* not used */
- }
- SomExportEntry;
-
- /* We read 100 entries in at a time from the disk file. */
-#define SOM_READ_EXPORTS_NUM 100
-#define SOM_READ_EXPORTS_CHUNK_SIZE (sizeof (SomExportEntry) * SOM_READ_EXPORTS_NUM)
- SomExportEntry buffer[SOM_READ_EXPORTS_NUM];
-
- /* Initialize in case we error out */
- objfile->export_list = NULL;
- objfile->export_list_size = 0;
-
- /* It doesn't work, for some reason, to read in space $TEXT$;
- the subspace $SHLIB_INFO$ has to be used. Some BFD quirk? pai/1997-08-05 */
- text_section = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$");
- if (!text_section)
- return 0;
- /* Get the SOM executable header */
- bfd_get_section_contents (objfile->obfd, text_section, dl_header, 0, 12 * sizeof (int));
-
- /* Check header version number for 10.x HP-UX */
- /* Currently we deal only with 10.x systems; on 9.x the version # is 89060912.
- FIXME: Change for future HP-UX releases and mods to the SOM executable format */
- if (dl_header[0] != 93092112)
- return 0;
-
- export_list = dl_header[8];
- export_list_size = dl_header[9];
- if (!export_list_size)
- return 0;
- string_table = dl_header[10];
- string_table_size = dl_header[11];
- if (!string_table_size)
- return 0;
-
- /* Suck in SOM string table */
- string_buffer = (char *) xmalloc (string_table_size);
- bfd_get_section_contents (objfile->obfd, text_section, string_buffer,
- string_table, string_table_size);
-
- /* Allocate export list in the psymbol obstack; this has nothing
- to do with psymbols, just a matter of convenience. We want the
- export list to be freed when the objfile is deallocated */
- objfile->export_list
- = (ExportEntry *) obstack_alloc (&objfile->objfile_obstack,
- export_list_size * sizeof (ExportEntry));
-
- /* Read in the export entries, a bunch at a time */
- for (j = 0, k = 0;
- j < (export_list_size / SOM_READ_EXPORTS_NUM);
- j++)
- {
- bfd_get_section_contents (objfile->obfd, text_section, buffer,
- export_list + j * SOM_READ_EXPORTS_CHUNK_SIZE,
- SOM_READ_EXPORTS_CHUNK_SIZE);
- for (i = 0; i < SOM_READ_EXPORTS_NUM; i++, k++)
- {
- if (buffer[i].type != (unsigned char) 0)
- {
- objfile->export_list[k].name
- = (char *) obstack_alloc (&objfile->objfile_obstack, strlen (string_buffer + buffer[i].name) + 1);
- strcpy (objfile->export_list[k].name, string_buffer + buffer[i].name);
- objfile->export_list[k].address = buffer[i].value;
- /* Some day we might want to record the type and other information too */
- }
- else
- /* null type */
- {
- objfile->export_list[k].name = NULL;
- objfile->export_list[k].address = 0;
- }
- }
- }
-
- /* Get the leftovers */
- if (k < export_list_size)
- bfd_get_section_contents (objfile->obfd, text_section, buffer,
- export_list + k * sizeof (SomExportEntry),
- (export_list_size - k) * sizeof (SomExportEntry));
- for (i = 0; k < export_list_size; i++, k++)
- {
- if (buffer[i].type != (unsigned char) 0)
- {
- objfile->export_list[k].name
- = (char *) obstack_alloc (&objfile->objfile_obstack, strlen (string_buffer + buffer[i].name) + 1);
- strcpy (objfile->export_list[k].name, string_buffer + buffer[i].name);
- /* Some day we might want to record the type and other information too */
- objfile->export_list[k].address = buffer[i].value;
- }
- else
- {
- objfile->export_list[k].name = NULL;
- objfile->export_list[k].address = 0;
- }
- }
-
- objfile->export_list_size = export_list_size;
- xfree (string_buffer);
- return export_list_size;
-}
\f
som_symfile_read, /* sym_read: read a symbol file into symtab */
som_symfile_finish, /* sym_finish: finished with file, cleanup */
som_symfile_offsets, /* sym_offsets: Translate ext. to int. relocation */
+ default_symfile_segments, /* sym_segments: Get segment information from
+ a file. */
NULL /* next: pointer to next struct sym_fns */
};