-/* Handle SOM shared libraries for GDB, the GNU Debugger.
+/* Handle SOM shared libraries.
- Copyright 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
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 "som.h"
#include "symtab.h"
#include "bfd.h"
#include "symfile.h"
#include "hppa-tdep.h"
#include "solist.h"
+#include "solib.h"
+
+#include <sys/utsname.h>
+#include <string.h>
#undef SOLIB_SOM_DBG
{
flagword aflag = bfd_get_section_flags(so->abfd, sec->the_bfd_section);
- /* solib.c does something similar, but it only recognizes ".text", SOM calls
- the text section "$CODE$". */
- if (strcmp (sec->the_bfd_section->name, "$CODE$") == 0)
- {
- so->textsection = sec;
- }
-
if (aflag & SEC_CODE)
{
sec->addr += so->lm_info->text_addr - so->lm_info->text_link_addr;
;
}
+/* Get HP-UX major release number. Returns zero if the
+ release is not known. */
+
+static int
+get_hpux_major_release (void)
+{
+ static int hpux_major_release = -1;
+
+ if (hpux_major_release == -1)
+ {
+ struct utsname x;
+ char *p;
+
+ uname (&x);
+ p = strchr (x.release, '.');
+ hpux_major_release = p ? atoi (p + 1) : 0;
+ }
+
+ return hpux_major_release;
+}
+
+/* DL header flag defines. */
+#define SHLIB_TEXT_PRIVATE_ENABLE 0x4000
+
+/* The DL header is documented in <shl.h>. We are only interested
+ in the flags field to determine whether the executable wants shared
+ libraries mapped private. */
+struct {
+ short junk[37];
+ short flags;
+} dl_header;
+
/* This hook gets called just before the first instruction in the
inferior process is executed.
if (bfd_section_size (symfile_objfile->obfd, shlib_info) == 0)
return;
+ /* Read the DL header. */
+ bfd_get_section_contents (symfile_objfile->obfd, shlib_info,
+ (char *) &dl_header, 0, sizeof (dl_header));
+
have_endo = 0;
/* Slam the pid of the process into __d_pid.
status = target_write_memory (anaddr, buf, 4);
if (status != 0)
{
- warning ("Unable to write __d_pid");
- warning ("Suggest linking with /opt/langtools/lib/end.o.");
- warning ("GDB will be unable to track shl_load/shl_unload calls");
+ warning (_("\
+Unable to write __d_pid.\n\
+Suggest linking with /opt/langtools/lib/end.o.\n\
+GDB will be unable to track shl_load/shl_unload calls"));
goto keep_going;
}
msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile);
if (msymbol == NULL)
{
- warning ("Unable to find _DLD_HOOK symbol in object file.");
- warning ("Suggest linking with /opt/langtools/lib/end.o.");
- warning ("GDB will be unable to track shl_load/shl_unload calls");
+ warning (_("\
+Unable to find _DLD_HOOK symbol in object file.\n\
+Suggest linking with /opt/langtools/lib/end.o.\n\
+GDB will be unable to track shl_load/shl_unload calls"));
goto keep_going;
}
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
msymbol = lookup_minimal_symbol ("__dld_hook", NULL, symfile_objfile);
if (msymbol == NULL)
{
- warning ("Unable to find __dld_hook symbol in object file.");
- warning ("Suggest linking with /opt/langtools/lib/end.o.");
- warning ("GDB will be unable to track shl_load/shl_unload calls");
+ warning (_("\
+Unable to find __dld_hook symbol in object file.\n\
+Suggest linking with /opt/langtools/lib/end.o.\n\
+GDB will be unable to track shl_load/shl_unload calls"));
goto keep_going;
}
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile);
if (msymbol == NULL)
{
- warning ("Unable to find __dld_d_trap symbol in object file.");
- warning ("Suggest linking with /opt/langtools/lib/end.o.");
- warning ("GDB will be unable to track shl_load/shl_unload calls");
+ warning (_("\
+Unable to find __dld_d_trap symbol in object file.\n\
+Suggest linking with /opt/langtools/lib/end.o.\n\
+GDB will be unable to track shl_load/shl_unload calls"));
goto keep_going;
}
create_solib_event_breakpoint (SYMBOL_VALUE_ADDRESS (msymbol));
msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
if (msymbol == NULL)
{
- error ("Unable to find __dld_flags symbol in object file.\n");
+ error (_("Unable to find __dld_flags symbol in object file."));
}
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
/* Read the current contents. */
status = target_read_memory (anaddr, buf, 4);
if (status != 0)
- {
- error ("Unable to read __dld_flags\n");
- }
+ error (_("Unable to read __dld_flags."));
dld_flags = extract_unsigned_integer (buf, 4);
+ /* If the libraries were not mapped private on HP-UX 11 and later, warn
+ the user. On HP-UX 10 and earlier, there is no easy way to specify
+ that shared libraries should be privately mapped. So, we just force
+ private mapping. */
+ if (get_hpux_major_release () >= 11
+ && (dl_header.flags & SHLIB_TEXT_PRIVATE_ENABLE) == 0
+ && (dld_flags & DLD_FLAGS_MAPPRIVATE) == 0)
+ warning
+ (_("Private mapping of shared library text was not specified\n"
+ "by the executable; setting a breakpoint in a shared library which\n"
+ "is not privately mapped will not work. See the HP-UX 11i v3 chatr\n"
+ "manpage for methods to privately map shared library text."));
+
/* Turn on the flags we care about. */
- dld_flags |= DLD_FLAGS_MAPPRIVATE;
+ if (get_hpux_major_release () < 11)
+ dld_flags |= DLD_FLAGS_MAPPRIVATE;
if (have_endo)
dld_flags |= DLD_FLAGS_HOOKVALID;
store_unsigned_integer (buf, 4, dld_flags);
status = target_write_memory (anaddr, buf, 4);
if (status != 0)
- {
- error ("Unable to write __dld_flags\n");
- }
+ error (_("Unable to write __dld_flags."));
/* Now find the address of _start and set a breakpoint there.
We still need this code for two reasons:
msymbol = lookup_minimal_symbol ("_start", NULL, symfile_objfile);
if (msymbol == NULL)
- {
- error ("Unable to find _start symbol in object file.\n");
- }
+ error (_("Unable to find _start symbol in object file."));
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
clear_symtab_users ();
}
-/* This operation removes the "hook" between GDB and the dynamic linker,
- which causes the dld to notify GDB of shared library events.
-
- After this operation completes, the dld will no longer notify GDB of
- shared library events. To resume notifications, GDB must call
- som_solib_create_inferior_hook.
-
- This operation does not remove any knowledge of shared libraries
- of which GDB may already have been notified.
- */
-static void
-som_solib_remove_inferior_hook (int pid)
-{
- CORE_ADDR addr;
- struct minimal_symbol *msymbol;
- int status;
- char dld_flags_buffer[4];
- unsigned int dld_flags_value;
- struct cleanup *old_cleanups = save_inferior_ptid ();
-
- /* Ensure that we're really operating on the specified process. */
- inferior_ptid = pid_to_ptid (pid);
-
- /* We won't bother to remove the solib breakpoints from this process.
-
- In fact, on PA64 the breakpoint is hard-coded into the dld callback,
- and thus we're not supposed to remove it.
-
- Rather, we'll merely clear the dld_flags bit that enables callbacks.
- */
- msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
-
- addr = SYMBOL_VALUE_ADDRESS (msymbol);
- status = target_read_memory (addr, dld_flags_buffer, 4);
-
- dld_flags_value = extract_unsigned_integer (dld_flags_buffer, 4);
-
- dld_flags_value &= ~DLD_FLAGS_HOOKVALID;
- store_unsigned_integer (dld_flags_buffer, 4, dld_flags_value);
- status = target_write_memory (addr, dld_flags_buffer, 4);
-
- do_cleanups (old_cleanups);
-}
-
static void
som_special_symbol_handling (void)
{
sym = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
if (!sym)
- {
- error ("Unable to find __dld_flags symbol in object file.\n");
- return 0;
- }
+ error (_("Unable to find __dld_flags symbol in object file."));
addr = SYMBOL_VALUE_ADDRESS (sym);
read_memory (addr, buf, 4);
dld_flags = extract_unsigned_integer (buf, 4);
if ((dld_flags & DLD_FLAGS_LISTVALID) == 0)
- {
- error ("__dld_list is not valid according to __dld_flags.\n");
- return 0;
- }
-
- /* If the libraries were not mapped private, warn the user. */
- if ((dld_flags & DLD_FLAGS_MAPPRIVATE) == 0)
- warning ("The shared libraries were not privately mapped; setting a\n"
- "breakpoint in a shared library will not work until you rerun the "
- "program.\n");
+ error (_("__dld_list is not valid according to __dld_flags."));
sym = lookup_minimal_symbol ("__dld_list", NULL, NULL);
if (!sym)
sym = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
if (!sym)
{
- error ("Unable to find dynamic library list.\n");
+ error (_("Unable to find dynamic library list."));
return 0;
}
addr = SYMBOL_VALUE_ADDRESS (sym) - 8;
read_memory (addr, buf, 4);
addr = extract_unsigned_integer (buf, 4);
if (addr == 0)
- {
- error ("Debugging dynamic executables loaded via the hpux8 dld.sl is not supported.\n");
- return 0;
- }
+ return 0;
read_memory (addr, buf, 4);
return extract_unsigned_integer (buf, 4);
new->lm_info = xmalloc (sizeof (struct lm_info));
make_cleanup (xfree, new->lm_info);
- read_memory (lm, (char *)&dbuf, sizeof (struct dld_list));
+ read_memory (lm, (gdb_byte *)&dbuf, sizeof (struct dld_list));
- addr = extract_unsigned_integer (&dbuf.name, sizeof (dbuf.name));
+ addr = extract_unsigned_integer ((gdb_byte *)&dbuf.name,
+ sizeof (dbuf.name));
target_read_string (addr, &namebuf, SO_NAME_MAX_PATH_SIZE - 1, &errcode);
if (errcode != 0)
- {
- warning ("current_sos: Can't read pathname for load map: %s\n",
- safe_strerror (errcode));
- }
+ warning (_("Can't read pathname for load map: %s."),
+ safe_strerror (errcode));
else
{
strncpy (new->so_name, namebuf, SO_NAME_MAX_PATH_SIZE - 1);
lmi->lm_addr = lm;
#define EXTRACT(_fld) \
- extract_unsigned_integer (&dbuf._fld, sizeof (dbuf._fld));
+ extract_unsigned_integer ((gdb_byte *)&dbuf._fld, sizeof (dbuf._fld));
lmi->text_addr = EXTRACT (text_addr);
tmp = EXTRACT (info);
paddr_nz (new->lm_info->tsd_start_addr));
#endif
+ new->addr_low = lmi->text_addr;
+ new->addr_high = lmi->text_end;
+
/* Link the new object onto the list. */
new->next = NULL;
*link_ptr = new;
if (errcode)
{
- warning ("failed to read exec filename from attached file: %s",
+ warning (_("failed to read exec filename from attached file: %s"),
safe_strerror (errcode));
return 0;
}
som_so_ops.in_dynsym_resolve_code = som_in_dynsym_resolve_code;
}
-void som_solib_select (struct gdbarch_tdep *tdep)
+void som_solib_select (struct gdbarch *gdbarch)
{
- current_target_so_ops = &som_so_ops;
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ set_solib_ops (gdbarch, &som_so_ops);
tdep->solib_thread_start_addr = som_solib_thread_start_addr;
tdep->solib_get_got_by_pc = som_solib_get_got_by_pc;
"$PRIVATE$");
if (!private_section)
{
- warning ("Unable to find $PRIVATE$ in shared library!");
+ warning (_("Unable to find $PRIVATE$ in shared library!"));
offsets->offsets[SECT_OFF_DATA (objfile)] = 0;
offsets->offsets[SECT_OFF_BSS (objfile)] = 0;
return 1;
projects / deliverable / binutils-gdb.git / blobdiff