/* Read HP PA/Risc object files for GDB.
- Copyright 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1991, 1992, 1994, 1995, 1996, 1998, 1999, 2000
+ Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support.
-This file is part of GDB.
+ This file is part of GDB.
-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
-(at your option) any later version.
+ 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
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-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. */
+ 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. */
#include "defs.h"
#include "bfd.h"
-#include <time.h> /* For time_t in libbfd.h. */
-#include <sys/types.h> /* For time_t, if not in time.h. */
-#include "libbfd.h"
-#include "som.h"
-#include "libhppa.h"
#include <syms.h>
#include "symtab.h"
#include "symfile.h"
#include "stabsread.h"
#include "gdb-stabs.h"
#include "complaints.h"
-#include <string.h>
+#include "gdb_string.h"
#include "demangle.h"
-#include <sys/file.h>
+#include "som.h"
+#include "libhppa.h"
-/* Size of n_value and n_strx fields in a stab symbol. */
-#define BYTES_IN_WORD 4
+/* Various things we might complain about... */
-#include "aout/aout64.h"
+static void som_symfile_init (struct objfile *);
-/* Various things we might complain about... */
+static void som_new_init (struct objfile *);
-static void
-som__symfile_init PARAMS ((struct objfile *));
+static void som_symfile_read (struct objfile *, int);
-static void
-som_new_init PARAMS ((struct objfile *));
+static void som_symfile_finish (struct objfile *);
static void
-som_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int));
+som_symtab_read (bfd *, struct objfile *, struct section_offsets *);
static void
-som_symfile_finish PARAMS ((struct objfile *));
+som_symfile_offsets (struct objfile *, struct section_addr_info *);
-static void
-som_symtab_read PARAMS ((bfd *, CORE_ADDR, struct objfile *));
+/* FIXME: These should really be in a common header somewhere */
-static void
-free_sominfo PARAMS ((PTR));
+extern void hpread_build_psymtabs (struct objfile *, int);
-static struct section_offsets *
-som_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR));
+extern void hpread_symfile_finish (struct objfile *);
-static void
-record_minimal_symbol PARAMS ((char *, CORE_ADDR,
- enum minimal_symbol_type,
- struct objfile *));
+extern void hpread_symfile_init (struct objfile *);
-static void
-record_minimal_symbol (name, address, ms_type, objfile)
- char *name;
- CORE_ADDR address;
- enum minimal_symbol_type ms_type;
- struct objfile *objfile;
-{
- name = obsavestring (name, strlen (name), &objfile -> symbol_obstack);
- prim_record_minimal_symbol (name, address, ms_type, objfile);
-}
+extern void do_pxdb (bfd *);
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- som_symtab_read -- read the symbol table of a SOM file
+ som_symtab_read -- read the symbol table of a SOM file
-SYNOPSIS
+ SYNOPSIS
- void som_symtab_read (bfd *abfd, CORE_ADDR addr,
- struct objfile *objfile)
+ void som_symtab_read (bfd *abfd, struct objfile *objfile,
+ struct section_offsets *section_offsets)
-DESCRIPTION
+ DESCRIPTION
- Given an open bfd, a base address to relocate symbols to, and a
- flag that specifies whether or not this bfd is for an executable
- or not (may be shared library for example), add all the global
- function and data symbols to the minimal symbol table.
-*/
+ Given an open bfd, a base address to relocate symbols to, and a
+ flag that specifies whether or not this bfd is for an executable
+ or not (may be shared library for example), add all the global
+ function and data symbols to the minimal symbol table.
+ */
static void
-som_symtab_read (abfd, addr, objfile)
- bfd *abfd;
- CORE_ADDR addr;
- struct objfile *objfile;
+som_symtab_read (bfd *abfd, struct objfile *objfile,
+ struct section_offsets *section_offsets)
{
unsigned int number_of_symbols;
- unsigned int i;
int val, dynamic;
char *stringtab;
asection *shlib_info;
struct symbol_dictionary_record *buf, *bufp, *endbufp;
char *symname;
CONST int symsize = sizeof (struct symbol_dictionary_record);
+ CORE_ADDR text_offset, data_offset;
+
+
+ text_offset = ANOFFSET (section_offsets, 0);
+ data_offset = ANOFFSET (section_offsets, 1);
number_of_symbols = bfd_get_symcount (abfd);
buf = alloca (symsize * number_of_symbols);
- bfd_seek (abfd, obj_som_sym_filepos (abfd), L_SET);
+ bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET);
val = bfd_read (buf, symsize * number_of_symbols, 1, abfd);
if (val != symsize * number_of_symbols)
error ("Couldn't read symbol dictionary!");
stringtab = alloca (obj_som_stringtab_size (abfd));
- bfd_seek (abfd, obj_som_str_filepos (abfd), L_SET);
+ bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET);
val = bfd_read (stringtab, obj_som_stringtab_size (abfd), 1, abfd);
if (val != obj_som_stringtab_size (abfd))
error ("Can't read in HP string table.");
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. */
- 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;
+ existence 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
+ */
+ dynamic = (text_offset != 0);
endbufp = buf + number_of_symbols;
for (bufp = buf; bufp < endbufp; ++bufp)
case ST_MILLICODE:
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
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. */
+ the stubs, while the ST_CODE symbol is the real
+ function. */
if (dynamic)
ms_type = mst_solib_trampoline;
else
ms_type = mst_text;
+ bufp->symbol_value += text_offset;
#ifdef SMASH_TEXT_ADDRESS
SMASH_TEXT_ADDRESS (bufp->symbol_value);
#endif
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
case ST_DATA:
symname = bufp->name.n_strx + stringtab;
+ bufp->symbol_value += data_offset;
ms_type = mst_data;
break;
default:
case ST_CODE:
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
check_strange_names:
/* Utah GCC 2.5, FSF GCC 2.6 and later generate correct local
- label prefixes for stabs, constant data, etc. So we need
- only filter out L$ symbols which are left in due to
- limitations in how GAS generates SOM relocations.
-
- When linking in the HPUX C-library the HP linker has
- the nasty habit of placing section symbols from the literal
- subspaces in the middle of the program's text. Filter
- those out as best we can. Check for first and last character
- being '$'. */
+ label prefixes for stabs, constant data, etc. So we need
+ only filter out L$ symbols which are left in due to
+ limitations in how GAS generates SOM relocations.
+
+ When linking in the HPUX C-library the HP linker has
+ the nasty habit of placing section symbols from the literal
+ subspaces in the middle of the program's text. Filter
+ those out as best we can. Check for first and last character
+ being '$'.
+
+ And finally, the newer HP compilers emit crud like $PIC_foo$N
+ in some circumstance (PIC code I guess). It's also claimed
+ that they emit D$ symbols too. What stupidity. */
if ((symname[0] == 'L' && symname[1] == '$')
- || (symname[0] == '$' && symname[strlen(symname) - 1] == '$'))
+ || (symname[0] == '$' && symname[strlen (symname) - 1] == '$')
+ || (symname[0] == 'D' && symname[1] == '$')
+ || (strncmp (symname, "$PIC", 4) == 0))
continue;
break;
case ST_MILLICODE:
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
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. */
+ the stubs, while the ST_CODE symbol is the real
+ function. */
if (dynamic)
ms_type = mst_solib_trampoline;
else
ms_type = mst_file_text;
+ bufp->symbol_value += text_offset;
#ifdef SMASH_TEXT_ADDRESS
SMASH_TEXT_ADDRESS (bufp->symbol_value);
#endif
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
case ST_DATA:
symname = bufp->name.n_strx + stringtab;
+ bufp->symbol_value += data_offset;
ms_type = mst_file_data;
goto check_strange_names;
}
break;
+ /* This can happen for common symbols when -E is passed to the
+ final link. No idea _why_ that would make the linker force
+ common symbols to have an SS_UNSAT scope, but it does.
+
+ This also happens for weak symbols, but their type is
+ ST_DATA. */
+ case SS_UNSAT:
+ switch (bufp->symbol_type)
+ {
+ case ST_STORAGE:
+ case ST_DATA:
+ symname = bufp->name.n_strx + stringtab;
+ bufp->symbol_value += data_offset;
+ ms_type = mst_data;
+ break;
+
+ default:
+ continue;
+ }
+ break;
+
default:
continue;
}
error ("Invalid symbol data; bad HP string table offset: %d",
bufp->name.n_strx);
- record_minimal_symbol (symname,
- bufp->symbol_value, ms_type,
- objfile);
+ prim_record_minimal_symbol (symname, bufp->symbol_value, ms_type,
+ objfile);
}
-
- install_minimal_symbols (objfile);
}
/* Scan and build partial symbols for a symbol file.
capability even for files compiled without -g. */
static void
-som_symfile_read (objfile, section_offsets, mainline)
- struct objfile *objfile;
- struct section_offsets *section_offsets;
- int mainline;
+som_symfile_read (struct objfile *objfile, int mainline)
{
bfd *abfd = objfile->obfd;
struct cleanup *back_to;
- CORE_ADDR offset;
-
- init_minimal_symbol_collection ();
- back_to = make_cleanup (discard_minimal_symbols, 0);
-
- make_cleanup (free_sominfo, (PTR) objfile);
-
- /* Process the normal SOM symbol table first. */
-
- /* FIXME, should take a section_offsets param, not just an offset. */
- offset = ANOFFSET (section_offsets, 0);
- som_symtab_read (abfd, offset, objfile);
+ do_pxdb (symfile_bfd_open (objfile->name));
- /* Now process debugging information, which is contained in
- special SOM sections. */
+ 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
- somstab_build_psymtabs (objfile, section_offsets, mainline);
+ /* 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
+ table and thus build up a "minimal symbol table". */
+
+ 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);
}
-/* This cleans up the objfile's sym_stab_info pointer, and the chain of
- stab_section_info's, that might be dangling from it. */
-
-static void
-free_sominfo (objp)
- PTR objp;
-{
- struct objfile *objfile = (struct objfile *)objp;
- struct dbx_symfile_info *dbxinfo = (struct dbx_symfile_info *)
- objfile->sym_stab_info;
- struct stab_section_info *ssi, *nssi;
-
- ssi = dbxinfo->stab_section_info;
- while (ssi)
- {
- nssi = ssi->next;
- mfree (objfile->md, ssi);
- ssi = nssi;
- }
-
- dbxinfo->stab_section_info = 0; /* Just say No mo info about this. */
-}
-
/* Initialize anything that needs initializing when a completely new symbol
file is specified (not just adding some symbols from another file, e.g. a
shared library).
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->sym_stab_info != NULL)
{
- mfree (objfile -> md, objfile -> sym_stab_info);
+ mfree (objfile->md, objfile->sym_stab_info);
}
+ hpread_symfile_finish (objfile);
}
-/* SOM specific initialization routine for reading symbols.
-
- It is passed a pointer to a struct sym_fns which contains, among other
- things, the BFD for the file whose symbols are being read, and a slot for
- a pointer to "private data" which we can fill with goodies.
-
- This routine is almost a complete ripoff of dbx_symfile_init. The
- common parts of these routines should be extracted and used instead of
- duplicating this code. FIXME. */
+/* SOM specific initialization routine for reading symbols. */
static void
-som_symfile_init (objfile)
- struct objfile *objfile;
+som_symfile_init (struct objfile *objfile)
{
- int val;
- bfd *sym_bfd = objfile->obfd;
- char *name = bfd_get_filename (sym_bfd);
- asection *stabsect; /* Section containing symbol table entries */
- asection *stringsect; /* Section containing symbol name strings */
-
- stabsect = bfd_get_section_by_name (sym_bfd, "$GDB_SYMBOLS$");
- stringsect = bfd_get_section_by_name (sym_bfd, "$GDB_STRINGS$");
-
- /* Allocate struct to keep track of the symfile */
- objfile->sym_stab_info = (PTR)
- xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info));
-
- memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info));
-
-
- /* FIXME POKING INSIDE BFD DATA STRUCTURES */
-#define STRING_TABLE_OFFSET (stringsect->filepos)
-#define SYMBOL_TABLE_OFFSET (stabsect->filepos)
-
- /* FIXME POKING INSIDE BFD DATA STRUCTURES */
-
- DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL;
- DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, "$TEXT$");
- if (!DBX_TEXT_SECT (objfile))
- error ("Can't find $TEXT$ section in symbol file");
-
- if (!stabsect)
- return;
-
- if (!stringsect)
- error ("Found stabs, but not string section");
-
- /* FIXME: I suspect this should be external_nlist. The size of host
- types like long and bfd_vma should not affect how we read the
- file. */
- DBX_SYMBOL_SIZE (objfile) = sizeof (struct internal_nlist);
- DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect)
- / DBX_SYMBOL_SIZE (objfile);
- DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET;
-
- /* Read the string table and stash it away in the psymbol_obstack. It is
- only needed as long as we need to expand psymbols into full symbols,
- so when we blow away the psymbol the string table goes away as well.
- Note that gdb used to use the results of attempting to malloc the
- string table, based on the size it read, as a form of sanity check
- for botched byte swapping, on the theory that a byte swapped string
- table size would be so totally bogus that the malloc would fail. Now
- that we put in on the psymbol_obstack, we can't do this since gdb gets
- a fatal error (out of virtual memory) if the size is bogus. We can
- however at least check to see if the size is zero or some negative
- value. */
-
- DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stringsect);
-
- if (DBX_SYMCOUNT (objfile) == 0
- || DBX_STRINGTAB_SIZE (objfile) == 0)
- return;
-
- if (DBX_STRINGTAB_SIZE (objfile) <= 0
- || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd))
- error ("ridiculous string table size (%d bytes).",
- DBX_STRINGTAB_SIZE (objfile));
-
- DBX_STRINGTAB (objfile) =
- (char *) obstack_alloc (&objfile -> psymbol_obstack,
- DBX_STRINGTAB_SIZE (objfile));
-
- /* Now read in the string table in one big gulp. */
-
- val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, L_SET);
- if (val < 0)
- perror_with_name (name);
- val = bfd_read (DBX_STRINGTAB (objfile), DBX_STRINGTAB_SIZE (objfile), 1,
- sym_bfd);
- if (val == 0)
- error ("End of file reading string table");
- else if (val < 0)
- /* It's possible bfd_read should be setting bfd_error, and we should be
- checking that. But currently it doesn't set bfd_error. */
- perror_with_name (name);
- else if (val != DBX_STRINGTAB_SIZE (objfile))
- error ("Short read reading string table");
+ /* 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 struct section_offsets *
-som_symfile_offsets (objfile, addr)
- struct objfile *objfile;
- CORE_ADDR addr;
+static void
+som_symfile_offsets (struct objfile *objfile, struct section_addr_info *addrs)
{
- struct section_offsets *section_offsets;
int i;
+ CORE_ADDR text_addr;
objfile->num_sections = SECT_OFF_MAX;
- section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile -> psymbol_obstack,
- sizeof (struct section_offsets)
- + sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1));
+ objfile->section_offsets = (struct section_offsets *)
+ obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS);
+
+ /* FIXME: ezannoni 2000-04-20 The section names in SOM are not
+ .text, .data, etc, but $TEXT$, $DATA$,... We should initialize
+ SET_OFF_* from bfd. (See default_symfile_offsets()). But I don't
+ know the correspondence between SOM sections and GDB's idea of
+ section names. So for now we default to what is was before these
+ changes.*/
+ objfile->sect_index_text = 0;
+ objfile->sect_index_data = 1;
+ objfile->sect_index_bss = 2;
+ objfile->sect_index_rodata = 3;
+
+ /* First see if we're a shared library. If so, get the section
+ offsets from the library, else get them from addrs. */
+ if (!som_solib_section_offsets (objfile, objfile->section_offsets))
+ {
+ /* 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++)
+ if (strcmp (addrs->other[i].name, ".text") == 0)
+ break;
+ text_addr = addrs->other[i].addr;
+
+ for (i = 0; i < SECT_OFF_MAX; i++)
+ (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. */
+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;
+ 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;
+
+ }
+ }
- for (i = 0; i < SECT_OFF_MAX; i++)
- ANOFFSET (section_offsets, i) = addr;
+ /* 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;
+ }
- return section_offsets;
+ 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;
+ 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;
+ }
+ }
+
+ objfile->export_list_size = export_list_size;
+ xfree (string_buffer);
+ return export_list_size;
}
\f
+
+
/* Register that we are able to handle SOM object file formats. */
static struct sym_fns som_sym_fns =
{
bfd_target_som_flavour,
- som_new_init, /* sym_new_init: init anything gbl to entire symtab */
- som_symfile_init, /* sym_init: read initial info, setup for sym_read() */
- 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 */
- NULL /* next: pointer to next struct sym_fns */
+ som_new_init, /* sym_new_init: init anything gbl to entire symtab */
+ som_symfile_init, /* sym_init: read initial info, setup for sym_read() */
+ 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 */
+ NULL /* next: pointer to next struct sym_fns */
};
void
-_initialize_somread ()
+_initialize_somread (void)
{
add_symtab_fns (&som_sym_fns);
}