/* Read HP PA/Risc object files for GDB.
- Copyright 1991, 1992, 1996, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1991-2014 Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support.
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
+ 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,
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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "bfd.h"
-#include <syms.h>
+#include "som/aout.h"
#include "symtab.h"
#include "symfile.h"
#include "objfiles.h"
#include "stabsread.h"
#include "gdb-stabs.h"
#include "complaints.h"
-#include "gdb_string.h"
#include "demangle.h"
#include "som.h"
#include "libhppa.h"
+#include "psymtab.h"
-/* Various things we might complain about... */
+#include "solib-som.h"
-static void
-som_symfile_init PARAMS ((struct objfile *));
-
-static void
-som_new_init PARAMS ((struct objfile *));
-
-static void
-som_symfile_read PARAMS ((struct objfile *, int));
-
-static void
-som_symfile_finish PARAMS ((struct objfile *));
-
-static void
-som_symtab_read PARAMS ((bfd *, struct objfile *,
- struct section_offsets *));
-
-static void
-som_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR));
-
-/* FIXME: These should really be in a common header somewhere */
-
-extern void
-hpread_build_psymtabs PARAMS ((struct objfile *, int));
-
-extern void
-hpread_symfile_finish PARAMS ((struct objfile *));
-
-extern void
-hpread_symfile_init PARAMS ((struct objfile *));
-
-extern void
-do_pxdb PARAMS ((bfd *));
-
-/*
-
- LOCAL FUNCTION
-
- som_symtab_read -- read the symbol table of a SOM file
-
- SYNOPSIS
-
- void som_symtab_read (bfd *abfd, struct objfile *objfile,
- struct section_offsets *section_offsets)
-
- DESCRIPTION
+/* Read the symbol table of a SOM file.
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.
- */
+ function and data symbols to the minimal symbol table. */
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)
{
+ struct cleanup *cleanup;
+ struct gdbarch *gdbarch = get_objfile_arch (objfile);
unsigned int number_of_symbols;
int val, dynamic;
char *stringtab;
asection *shlib_info;
- struct symbol_dictionary_record *buf, *bufp, *endbufp;
+ struct som_external_symbol_dictionary_record *buf, *bufp, *endbufp;
char *symname;
- CONST int symsize = sizeof (struct symbol_dictionary_record);
- CORE_ADDR text_offset, data_offset;
-
+ const int symsize = sizeof (struct som_external_symbol_dictionary_record);
- 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);
+ /* 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);
+ cleanup = 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
- */
- dynamic = (text_offset != 0);
+ 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 = (ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)) != 0);
endbufp = buf + number_of_symbols;
for (bufp = buf; bufp < endbufp; ++bufp)
{
enum minimal_symbol_type ms_type;
+ unsigned int flags = bfd_getb32 (bufp->flags);
+ unsigned int symbol_type
+ = (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK;
+ unsigned int symbol_scope
+ = (flags >> SOM_SYMBOL_SCOPE_SH) & SOM_SYMBOL_SCOPE_MASK;
+ CORE_ADDR symbol_value = bfd_getb32 (bufp->symbol_value);
+ asection *section = NULL;
QUIT;
- switch (bufp->symbol_scope)
+ /* Compute the section. */
+ switch (symbol_scope)
+ {
+ case SS_EXTERNAL:
+ if (symbol_type != ST_STORAGE)
+ section = bfd_und_section_ptr;
+ else
+ section = bfd_com_section_ptr;
+ break;
+
+ case SS_UNSAT:
+ if (symbol_type != ST_STORAGE)
+ section = bfd_und_section_ptr;
+ else
+ section = bfd_com_section_ptr;
+ break;
+
+ case SS_UNIVERSAL:
+ section = bfd_section_from_som_symbol (abfd, bufp);
+ break;
+
+ case SS_LOCAL:
+ section = bfd_section_from_som_symbol (abfd, bufp);
+ break;
+ }
+
+ switch (symbol_scope)
{
case SS_UNIVERSAL:
case SS_EXTERNAL:
- switch (bufp->symbol_type)
+ switch (symbol_type)
{
case ST_SYM_EXT:
case ST_ARG_EXT:
case ST_PRI_PROG:
case ST_SEC_PROG:
case ST_MILLICODE:
- symname = bufp->name.n_strx + stringtab;
+ symname = bfd_getb32 (bufp->name) + stringtab;
ms_type = mst_text;
- bufp->symbol_value += text_offset;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
break;
case ST_ENTRY:
- symname = bufp->name.n_strx + stringtab;
+ symname = bfd_getb32 (bufp->name) + stringtab;
/* For a dynamic executable, ST_ENTRY symbols are
the stubs, while the ST_CODE symbol is the real
function. */
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
+ symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
break;
case ST_STUB:
- symname = bufp->name.n_strx + stringtab;
+ symname = bfd_getb32 (bufp->name) + stringtab;
ms_type = mst_solib_trampoline;
- bufp->symbol_value += text_offset;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
break;
case ST_DATA:
- symname = bufp->name.n_strx + stringtab;
- bufp->symbol_value += data_offset;
+ symname = bfd_getb32 (bufp->name) + stringtab;
ms_type = mst_data;
break;
default:
case SS_GLOBAL:
#endif
case SS_LOCAL:
- switch (bufp->symbol_type)
+ switch (symbol_type)
{
case ST_SYM_EXT:
case ST_ARG_EXT:
continue;
case ST_CODE:
- symname = bufp->name.n_strx + stringtab;
+ symname = bfd_getb32 (bufp->name) + stringtab;
ms_type = mst_file_text;
- bufp->symbol_value += text_offset;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
check_strange_names:
/* Utah GCC 2.5, FSF GCC 2.6 and later generate correct local
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 '$'.
+ being '$'.
And finally, the newer HP compilers emit crud like $PIC_foo$N
in some circumstance (PIC code I guess). It's also claimed
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;
case ST_PRI_PROG:
case ST_SEC_PROG:
case ST_MILLICODE:
- symname = bufp->name.n_strx + stringtab;
+ symname = bfd_getb32 (bufp->name) + stringtab;
ms_type = mst_file_text;
- bufp->symbol_value += text_offset;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ symbol_value = gdbarch_addr_bits_remove (gdbarch, 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;
- bufp->symbol_value += text_offset;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ symname = bfd_getb32 (bufp->name) + stringtab;
+ /* 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;
+ symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
break;
case ST_STUB:
- symname = bufp->name.n_strx + stringtab;
+ symname = bfd_getb32 (bufp->name) + stringtab;
ms_type = mst_solib_trampoline;
- bufp->symbol_value += text_offset;
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (bufp->symbol_value);
-#endif
+ symbol_value = gdbarch_addr_bits_remove (gdbarch, symbol_value);
break;
case ST_DATA:
- symname = bufp->name.n_strx + stringtab;
- bufp->symbol_value += data_offset;
+ symname = bfd_getb32 (bufp->name) + stringtab;
ms_type = mst_file_data;
goto check_strange_names;
This also happens for weak symbols, but their type is
ST_DATA. */
case SS_UNSAT:
- switch (bufp->symbol_type)
+ switch (symbol_type)
{
case ST_STORAGE:
case ST_DATA:
- symname = bufp->name.n_strx + stringtab;
- bufp->symbol_value += data_offset;
+ symname = bfd_getb32 (bufp->name) + stringtab;
ms_type = mst_data;
break;
continue;
}
- if (bufp->name.n_strx > obj_som_stringtab_size (abfd))
- error ("Invalid symbol data; bad HP string table offset: %d",
- bufp->name.n_strx);
+ if (bfd_getb32 (bufp->name) > obj_som_stringtab_size (abfd))
+ error (_("Invalid symbol data; bad HP string table offset: %s"),
+ plongest (bfd_getb32 (bufp->name)));
+
+ if (bfd_is_const_section (section))
+ {
+ struct obj_section *iter;
+
+ ALL_OBJFILE_OSECTIONS (objfile, iter)
+ {
+ CORE_ADDR start;
+ CORE_ADDR len;
+
+ if (bfd_is_const_section (iter->the_bfd_section))
+ continue;
+
+ start = bfd_get_section_vma (iter->objfile->obfd,
+ iter->the_bfd_section);
+ len = bfd_get_section_size (iter->the_bfd_section);
+ if (start <= symbol_value && symbol_value < start + len)
+ {
+ section = iter->the_bfd_section;
+ break;
+ }
+ }
+ }
- prim_record_minimal_symbol (symname, bufp->symbol_value, ms_type,
- objfile);
+ prim_record_minimal_symbol_and_info (symname, symbol_value, ms_type,
+ gdb_bfd_section_index (objfile->obfd,
+ section),
+ objfile);
}
+
+ do_cleanups (cleanup);
}
/* Scan and build partial symbols for a symbol file.
SECTION_OFFSETS is a set of offsets to apply to relocate the symbols
in each section. This is ignored, as it isn't needed for SOM.
- MAINLINE is true if we are reading the main symbol
- table (as opposed to a shared lib or dynamically loaded file).
-
This function only does the minimum work necessary for letting the
user "name" things symbolically; it does not read the entire symtab.
Instead, it reads the external and static symbols and puts them in partial
for real.
We look for sections with specific names, to tell us what debug
- format to look for: FIXME!!!
+ format to look for.
somstab_build_psymtabs() handles STABS symbols.
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 symfile_flags)
{
bfd *abfd = objfile->obfd;
struct cleanup *back_to;
- do_pxdb (symfile_bfd_open (objfile->name));
-
init_minimal_symbol_collection ();
- back_to = make_cleanup ((make_cleanup_func) discard_minimal_symbols, 0);
-
- /* 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
+ back_to = make_cleanup_discard_minimal_symbols ();
- /* Process the normal SOM symbol table first.
+ /* 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". */
+ 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$");
-
- /* Now read the native debug information.
- This builds the psymtab. This used to be done via a scan of
- the DNTT, but is now done via the PXDB-built quick-lookup tables
- together with a scan of the GNTT. See hp-psymtab-read.c. */
- hpread_build_psymtabs (objfile, mainline);
-
/* Install any minimal symbols that have been collected as the current
- minimal symbols for this objfile.
+ minimal symbols for this objfile.
Further symbol-reading is done incrementally, file-by-file,
- in a step known as "psymtab-to-symtab" expansion. hp-symtab-read.c
- contains the code to do the actual DNTT scanning and symtab building. */
+ in a step known as "psymtab-to-symtab" expansion. hp-symtab-read.c
+ contains the code to do the actual DNTT scanning and symtab building. */
install_minimal_symbols (objfile);
-
- /* Force hppa-tdep.c to re-read the unwind descriptors. */
- objfile->obj_private = NULL;
do_cleanups (back_to);
+
+ /* Now read information from the stabs debug sections.
+ This is emitted by gcc. */
+ stabsect_build_psymtabs (objfile,
+ "$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 ();
}
/* Perform any local cleanups required when we are done with a particular
- objfile. I.E, we are in the process of discarding all symbol information
+ objfile. I.e, we are in the process of discarding all symbol information
for an objfile, freeing up all memory held for it, and unlinking the
- objfile struct from the global list of known objfiles. */
+ 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)
- {
- mfree (objfile->md, objfile->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. */
+/* An object of this type is passed to find_section_offset. */
-static void
-som_symfile_offsets (objfile, addr)
- struct objfile *objfile;
- CORE_ADDR addr;
+struct find_section_offset_arg
{
- int i;
+ /* The objfile. */
- objfile->num_sections = SECT_OFF_MAX;
- objfile->section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS);
+ struct objfile *objfile;
- /* First see if we're a shared library. If so, get the section
- offsets from the library, else get them from addr. */
- if (!som_solib_section_offsets (objfile, objfile->section_offsets))
- {
- for (i = 0; i < SECT_OFF_MAX; i++)
- ANOFFSET (objfile->section_offsets, i) = addr;
- }
-}
+ /* Flags to invert. */
+
+ flagword invert;
-/* 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;
+ /* Flags to look for. */
+
+ flagword flags;
+
+ /* A text section with non-zero size, if any. */
+
+ asection *best_section;
+
+ /* An empty text section, if any. */
+
+ asection *empty_section;
+};
+
+/* A callback for bfd_map_over_sections that tries to find a section
+ with particular flags in an objfile. */
+
+static void
+find_section_offset (bfd *abfd, asection *sect, void *arg)
{
- 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;
+ struct find_section_offset_arg *info = arg;
+ flagword aflag;
- }
- }
+ aflag = bfd_get_section_flags (abfd, sect);
+
+ aflag ^= info->invert;
- /* 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 ((aflag & info->flags) == info->flags)
{
- if (buffer[i].type != (unsigned char) 0)
+ if (bfd_section_size (abfd, sect) > 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 */
+ if (info->best_section == NULL)
+ info->best_section = sect;
}
else
- objfile->import_list[k] = NULL;
+ {
+ if (info->empty_section == NULL)
+ info->empty_section = sect;
+ }
}
+}
- objfile->import_list_size = import_list_size;
- free (string_buffer);
- return import_list_size;
+/* Set a section index from a BFD. */
+
+static void
+set_section_index (struct objfile *objfile, flagword invert, flagword flags,
+ int *index_ptr)
+{
+ struct find_section_offset_arg info;
+
+ info.objfile = objfile;
+ info.best_section = NULL;
+ info.empty_section = NULL;
+ info.invert = invert;
+ info.flags = flags;
+ bfd_map_over_sections (objfile->obfd, find_section_offset, &info);
+
+ if (info.best_section)
+ *index_ptr = info.best_section->index;
+ else if (info.empty_section)
+ *index_ptr = info.empty_section->index;
}
-/* 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;
+/* SOM specific parsing routine for section offsets.
+
+ Plain and simple for now. */
+
+static void
+som_symfile_offsets (struct objfile *objfile,
+ const struct section_addr_info *addrs)
{
- 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;
- }
- }
- }
+ int i;
+ CORE_ADDR text_addr;
+ asection *sect;
- /* 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++)
+ objfile->num_sections = bfd_count_sections (objfile->obfd);
+ objfile->section_offsets = (struct section_offsets *)
+ obstack_alloc (&objfile->objfile_obstack,
+ SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
+
+ set_section_index (objfile, 0, SEC_ALLOC | SEC_CODE,
+ &objfile->sect_index_text);
+ set_section_index (objfile, 0, SEC_ALLOC | SEC_DATA,
+ &objfile->sect_index_data);
+ set_section_index (objfile, SEC_LOAD, SEC_ALLOC | SEC_LOAD,
+ &objfile->sect_index_bss);
+ set_section_index (objfile, 0, SEC_ALLOC | SEC_READONLY,
+ &objfile->sect_index_rodata);
+
+ /* 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))
{
- 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;
- }
- }
+ /* 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 < addrs->num_sections; i++)
+ if (strcmp (addrs->other[i].name, ".text") == 0)
+ break;
+ text_addr = addrs->other[i].addr;
- objfile->export_list_size = export_list_size;
- free (string_buffer);
- return export_list_size;
+ for (i = 0; i < objfile->num_sections; i++)
+ (objfile->section_offsets)->offsets[i] = text_addr;
+ }
}
\f
/* Register that we are able to handle SOM object file formats. */
-static struct sym_fns som_sym_fns =
+static const 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, /* init anything gbl to entire symtab */
+ som_symfile_init, /* read initial info, setup for sym_read() */
+ som_symfile_read, /* read a symbol file into symtab */
+ NULL, /* sym_read_psymbols */
+ som_symfile_finish, /* finished with file, cleanup */
+ som_symfile_offsets, /* Translate ext. to int. relocation */
+ default_symfile_segments, /* Get segment information from a file. */
+ NULL,
+ default_symfile_relocate, /* Relocate a debug section. */
+ NULL, /* sym_get_probes */
+ &psym_functions
};
+initialize_file_ftype _initialize_somread;
+
void
-_initialize_somread ()
+_initialize_somread (void)
{
- add_symtab_fns (&som_sym_fns);
+ add_symtab_fns (bfd_target_som_flavour, &som_sym_fns);
}
projects / deliverable / binutils-gdb.git / blobdiff