/* Read HP PA/Risc object files for GDB.
- Copyright 1991, 1992, 1996, 1999 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 "som.h"
#include "libhppa.h"
-/* Various things we might complain about... */
-
-static void som_symfile_init (struct objfile *);
-
-static void som_new_init (struct objfile *);
-
-static void som_symfile_read (struct objfile *, int);
-
-static void som_symfile_finish (struct objfile *);
-
-static void
-som_symtab_read (bfd *, struct objfile *, struct section_offsets *);
-
-static void
-som_symfile_offsets (struct objfile *, struct section_addr_info *);
-
-/* 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 *);
+#include "solib-som.h"
/*
*/
static void
-som_symtab_read (abfd, objfile, section_offsets)
- bfd *abfd;
- struct objfile *objfile;
- struct section_offsets *section_offsets;
+som_symtab_read (bfd *abfd, struct objfile *objfile,
+ struct section_offsets *section_offsets)
{
unsigned int number_of_symbols;
int val, dynamic;
number_of_symbols = bfd_get_symcount (abfd);
- 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_read (buf, symsize * number_of_symbols, 1, abfd);
+ val = bfd_bread (buf, symsize * number_of_symbols, abfd);
if (val != symsize * number_of_symbols)
- error ("Couldn't read symbol dictionary!");
-
- stringtab = alloca (obj_som_stringtab_size (abfd));
+ error (_("Couldn't read symbol dictionary!"));
+
+ /* 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_read (stringtab, obj_som_stringtab_size (abfd), 1, abfd);
+ val = bfd_bread (stringtab, obj_som_stringtab_size (abfd), abfd);
if (val != obj_som_stringtab_size (abfd))
- error ("Can't read in HP string table.");
+ error (_("Can't read in HP string table."));
/* We need to determine if objfile is a dynamic executable (so we
can do the right thing for ST_ENTRY vs ST_CODE symbols).
There's nothing in the header which easily allows us to do
- this. The only reliable way I know of is to check for the
- existance of a $SHLIB_INFO$ section with a non-zero size. */
- /* The code below is not a reliable way to check whether an
- * executable is dynamic, so I commented it out - RT
- * shlib_info = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$");
- * if (shlib_info)
- * dynamic = (bfd_section_size (objfile->obfd, shlib_info) != 0);
- * else
- * dynamic = 0;
- */
- /* I replaced the code with a simple check for text offset not being
- * zero. Still not 100% reliable, but a more reliable way of asking
- * "is this a dynamic executable?" than the above. RT
- */
+ this.
+
+ This code used to rely upon the existence of a $SHLIB_INFO$
+ section to make this determination. HP claims that it is
+ more accurate to check for a nonzero text offset, but they
+ have not provided any information about why that test is
+ more accurate. */
dynamic = (text_offset != 0);
endbufp = buf + number_of_symbols;
symname = bufp->name.n_strx + stringtab;
ms_type = mst_text;
bufp->symbol_value += text_offset;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ 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;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ 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;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ 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;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ 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
if ((symname[0] == 'L' && symname[1] == '$')
|| (symname[0] == '$' && symname[strlen (symname) - 1] == '$')
|| (symname[0] == 'D' && symname[1] == '$')
+ || (strncmp (symname, "L0\001", 3) == 0)
|| (strncmp (symname, "$PIC", 4) == 0))
continue;
break;
symname = bufp->name.n_strx + stringtab;
ms_type = mst_file_text;
bufp->symbol_value += text_offset;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ bufp->symbol_value = gdbarch_smash_text_address
+ (current_gdbarch, bufp->symbol_value);
break;
case ST_ENTRY:
symname = bufp->name.n_strx + stringtab;
- /* For a dynamic executable, ST_ENTRY symbols are
- the stubs, while the ST_CODE symbol is the real
- function. */
- if (dynamic)
- ms_type = mst_solib_trampoline;
- else
- ms_type = mst_file_text;
+ /* SS_LOCAL symbols in a shared library do not have
+ export stubs, so we do not have to worry about
+ using mst_file_text vs mst_solib_trampoline here like
+ we do for SS_UNIVERSAL and SS_EXTERNAL symbols above. */
+ ms_type = mst_file_text;
bufp->symbol_value += text_offset;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ 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;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ bufp->symbol_value = gdbarch_smash_text_address
+ (current_gdbarch, bufp->symbol_value);
break;
}
if (bufp->name.n_strx > obj_som_stringtab_size (abfd))
- error ("Invalid symbol data; bad HP string table offset: %d",
+ error (_("Invalid symbol data; bad HP string table offset: %d"),
bufp->name.n_strx);
prim_record_minimal_symbol (symname, bufp->symbol_value, ms_type,
capability even for files compiled without -g. */
static void
-som_symfile_read (objfile, mainline)
- struct objfile *objfile;
- int mainline;
+som_symfile_read (struct objfile *objfile, int mainline)
{
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
som_symtab_read (abfd, objfile, objfile->section_offsets);
- /* 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? */
- stabsect_build_psymtabs (objfile, mainline,
- "$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$");
-
- /* Now read the native debug information.
- This builds the psymtab. This used to be done via a scan of
- the DNTT, but is now done via the PXDB-built quick-lookup tables
- together with a scan of the GNTT. See hp-psymtab-read.c. */
- hpread_build_psymtabs (objfile, mainline);
-
/* Install any minimal symbols that have been collected as the current
minimal symbols for this objfile.
Further symbol-reading is done incrementally, file-by-file,
in a step known as "psymtab-to-symtab" expansion. hp-symtab-read.c
contains the code to do the actual DNTT scanning and symtab building. */
install_minimal_symbols (objfile);
-
- /* Force hppa-tdep.c to re-read the unwind descriptors. */
- objfile->obj_private = NULL;
do_cleanups (back_to);
+
+ /* Now read information from the stabs debug sections.
+ This is emitted by gcc. */
+ stabsect_build_psymtabs (objfile, mainline,
+ "$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$");
}
/* Initialize anything that needs initializing when a completely new symbol
We reinitialize buildsym, since we may be reading stabs from a SOM file. */
static void
-som_new_init (ignore)
- struct objfile *ignore;
+som_new_init (struct objfile *ignore)
{
stabsread_new_init ();
buildsym_new_init ();
objfile struct from the global list of known objfiles. */
static void
-som_symfile_finish (objfile)
- struct objfile *objfile;
+som_symfile_finish (struct objfile *objfile)
{
- if (objfile->sym_stab_info != NULL)
+ if (objfile->deprecated_sym_stab_info != NULL)
{
- mfree (objfile->md, objfile->sym_stab_info);
+ xfree (objfile->deprecated_sym_stab_info);
}
- hpread_symfile_finish (objfile);
}
/* SOM specific initialization routine for reading symbols. */
static void
-som_symfile_init (objfile)
- struct objfile *objfile;
+som_symfile_init (struct objfile *objfile)
{
/* SOM objects may be reordered, so set OBJF_REORDERED. If we
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.
Plain and simple for now. */
static void
-som_symfile_offsets (objfile, addrs)
- struct objfile *objfile;
- struct section_addr_info *addrs;
+som_symfile_offsets (struct objfile *objfile, struct section_addr_info *addrs)
{
int i;
CORE_ADDR text_addr;
- objfile->num_sections = SECT_OFF_MAX;
+ objfile->num_sections = bfd_count_sections (objfile->obfd);
objfile->section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS);
+ obstack_alloc (&objfile->objfile_obstack,
+ SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
/* FIXME: ezannoni 2000-04-20 The section names in SOM are not
.text, .data, etc, but $TEXT$, $DATA$,... We should initialize
/* Note: Here is OK to compare with ".text" because this is the
name that gdb itself gives to that section, not the SOM
name. */
- for (i = 0; i < SECT_OFF_MAX && addrs->other[i].name; i++)
+ for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
if (strcmp (addrs->other[i].name, ".text") == 0)
break;
text_addr = addrs->other[i].addr;
- for (i = 0; i < SECT_OFF_MAX; i++)
- ANOFFSET (objfile->section_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. */
-int
-init_import_symbols (objfile)
- struct objfile *objfile;
-{
- unsigned int import_list;
- unsigned int import_list_size;
- unsigned int string_table;
- unsigned int string_table_size;
- char *string_buffer;
- register int i;
- register int j;
- register 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->psymbol_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->psymbol_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->psymbol_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;
- free (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 (objfile)
- struct objfile *objfile;
-{
- unsigned int export_list;
- unsigned int export_list_size;
- unsigned int string_table;
- unsigned int string_table_size;
- char *string_buffer;
- register int i;
- register int j;
- register 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->psymbol_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->psymbol_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->psymbol_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;
- }
+ for (i = 0; i < objfile->num_sections; i++)
+ (objfile->section_offsets)->offsets[i] = text_addr;
}
-
- objfile->export_list_size = export_list_size;
- free (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 */
};
void
-_initialize_somread ()
+_initialize_somread (void)
{
add_symtab_fns (&som_sym_fns);
}