/* Handle SOM shared libraries.
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/* Handle SOM shared libraries.
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|
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Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
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Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include "symtab.h"
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#include "symtab.h"
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#include "bfd.h"
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#include "bfd.h"
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#include "symfile.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "objfiles.h"
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#include "gdbcore.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "target.h"
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#include "inferior.h"
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#include "inferior.h"
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|
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#include "hppa-tdep.h"
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#include "hppa-tdep.h"
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#include "solist.h"
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#include "solist.h"
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#include "solib.h"
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#include "solib.h"
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#undef SOLIB_SOM_DBG
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#undef SOLIB_SOM_DBG
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/* These ought to be defined in some public interface, but aren't. They
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/* These ought to be defined in some public interface, but aren't. They
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define the meaning of the various bits in the distinguished __dld_flags
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define the meaning of the various bits in the distinguished __dld_flags
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variable that is declared in every debuggable a.out on HP-UX, and that
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variable that is declared in every debuggable a.out on HP-UX, and that
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is shared between the debugger and the dynamic linker.
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is shared between the debugger and the dynamic linker.
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*/
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*/
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#define DLD_FLAGS_MAPPRIVATE 0x1
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#define DLD_FLAGS_MAPPRIVATE 0x1
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#define DLD_FLAGS_HOOKVALID 0x2
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#define DLD_FLAGS_HOOKVALID 0x2
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#define DLD_FLAGS_LISTVALID 0x4
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#define DLD_FLAGS_LISTVALID 0x4
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#define DLD_FLAGS_BOR_ENABLE 0x8
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#define DLD_FLAGS_BOR_ENABLE 0x8
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|
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struct lm_info
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struct lm_info
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{
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{
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/* Version of this structure (it is expected to change again in hpux10). */
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/* Version of this structure (it is expected to change again in hpux10). */
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unsigned char struct_version;
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unsigned char struct_version;
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|
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/* Binding mode for this library. */
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/* Binding mode for this library. */
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unsigned char bind_mode;
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unsigned char bind_mode;
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/* Version of this library. */
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/* Version of this library. */
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short library_version;
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short library_version;
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/* Start of text address,
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/* Start of text address,
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link-time text location (length of text area),
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link-time text location (length of text area),
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end of text address. */
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end of text address. */
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CORE_ADDR text_addr;
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CORE_ADDR text_addr;
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CORE_ADDR text_link_addr;
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CORE_ADDR text_link_addr;
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CORE_ADDR text_end;
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CORE_ADDR text_end;
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/* Start of data, start of bss and end of data. */
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/* Start of data, start of bss and end of data. */
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CORE_ADDR data_start;
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CORE_ADDR data_start;
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CORE_ADDR bss_start;
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CORE_ADDR bss_start;
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CORE_ADDR data_end;
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CORE_ADDR data_end;
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/* Value of linkage pointer (%r19). */
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/* Value of linkage pointer (%r19). */
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CORE_ADDR got_value;
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CORE_ADDR got_value;
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/* Address in target of offset from thread-local register of
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/* Address in target of offset from thread-local register of
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start of this thread's data. I.e., the first thread-local
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start of this thread's data. I.e., the first thread-local
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variable in this shared library starts at *(tsd_start_addr)
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variable in this shared library starts at *(tsd_start_addr)
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from that area pointed to by cr27 (mpsfu_hi).
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from that area pointed to by cr27 (mpsfu_hi).
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|
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We do the indirection as soon as we read it, so from then
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We do the indirection as soon as we read it, so from then
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on it's the offset itself. */
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on it's the offset itself. */
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CORE_ADDR tsd_start_addr;
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CORE_ADDR tsd_start_addr;
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|
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/* Address of the link map entry in the loader. */
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/* Address of the link map entry in the loader. */
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CORE_ADDR lm_addr;
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CORE_ADDR lm_addr;
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};
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};
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|
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/* These addresses should be filled in by som_solib_create_inferior_hook.
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/* These addresses should be filled in by som_solib_create_inferior_hook.
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They are also used elsewhere in this module.
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They are also used elsewhere in this module.
|
*/
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*/
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typedef struct
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typedef struct
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{
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{
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CORE_ADDR address;
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CORE_ADDR address;
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struct unwind_table_entry *unwind;
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struct unwind_table_entry *unwind;
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}
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}
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addr_and_unwind_t;
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addr_and_unwind_t;
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/* When adding fields, be sure to clear them in _initialize_som_solib. */
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/* When adding fields, be sure to clear them in _initialize_som_solib. */
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static struct
|
static struct
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{
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{
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int is_valid;
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int is_valid;
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addr_and_unwind_t hook;
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addr_and_unwind_t hook;
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addr_and_unwind_t hook_stub;
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addr_and_unwind_t hook_stub;
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addr_and_unwind_t load;
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addr_and_unwind_t load;
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addr_and_unwind_t load_stub;
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addr_and_unwind_t load_stub;
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addr_and_unwind_t unload;
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addr_and_unwind_t unload;
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addr_and_unwind_t unload2;
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addr_and_unwind_t unload2;
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addr_and_unwind_t unload_stub;
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addr_and_unwind_t unload_stub;
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}
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}
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dld_cache;
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dld_cache;
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static void
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static void
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som_relocate_section_addresses (struct so_list *so,
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som_relocate_section_addresses (struct so_list *so,
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struct section_table *sec)
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struct section_table *sec)
|
{
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{
|
flagword aflag = bfd_get_section_flags(so->abfd, sec->the_bfd_section);
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flagword aflag = bfd_get_section_flags(so->abfd, sec->the_bfd_section);
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|
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if (aflag & SEC_CODE)
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if (aflag & SEC_CODE)
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{
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{
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sec->addr += so->lm_info->text_addr - so->lm_info->text_link_addr;
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sec->addr += so->lm_info->text_addr - so->lm_info->text_link_addr;
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sec->endaddr += so->lm_info->text_addr - so->lm_info->text_link_addr;
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sec->endaddr += so->lm_info->text_addr - so->lm_info->text_link_addr;
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}
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}
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else if (aflag & SEC_DATA)
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else if (aflag & SEC_DATA)
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{
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{
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sec->addr += so->lm_info->data_start;
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sec->addr += so->lm_info->data_start;
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sec->endaddr += so->lm_info->data_start;
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sec->endaddr += so->lm_info->data_start;
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}
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}
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else
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else
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;
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;
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}
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}
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|
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/* This hook gets called just before the first instruction in the
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/* This hook gets called just before the first instruction in the
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inferior process is executed.
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inferior process is executed.
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|
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This is our opportunity to set magic flags in the inferior so
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This is our opportunity to set magic flags in the inferior so
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that GDB can be notified when a shared library is mapped in and
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that GDB can be notified when a shared library is mapped in and
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to tell the dynamic linker that a private copy of the library is
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to tell the dynamic linker that a private copy of the library is
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needed (so GDB can set breakpoints in the library).
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needed (so GDB can set breakpoints in the library).
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|
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__dld_flags is the location of the magic flags; as of this implementation
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__dld_flags is the location of the magic flags; as of this implementation
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there are 3 flags of interest:
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there are 3 flags of interest:
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|
|
bit 0 when set indicates that private copies of the libraries are needed
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bit 0 when set indicates that private copies of the libraries are needed
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bit 1 when set indicates that the callback hook routine is valid
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bit 1 when set indicates that the callback hook routine is valid
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bit 2 when set indicates that the dynamic linker should maintain the
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bit 2 when set indicates that the dynamic linker should maintain the
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__dld_list structure when loading/unloading libraries.
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__dld_list structure when loading/unloading libraries.
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|
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Note that shared libraries are not mapped in at this time, so we have
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Note that shared libraries are not mapped in at this time, so we have
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run the inferior until the libraries are mapped in. Typically this
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run the inferior until the libraries are mapped in. Typically this
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means running until the "_start" is called. */
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means running until the "_start" is called. */
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|
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static void
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static void
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som_solib_create_inferior_hook (void)
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som_solib_create_inferior_hook (void)
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{
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{
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struct minimal_symbol *msymbol;
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struct minimal_symbol *msymbol;
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unsigned int dld_flags, status, have_endo;
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unsigned int dld_flags, status, have_endo;
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asection *shlib_info;
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asection *shlib_info;
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char buf[4];
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char buf[4];
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CORE_ADDR anaddr;
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CORE_ADDR anaddr;
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/* First, remove all the solib event breakpoints. Their addresses
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/* First, remove all the solib event breakpoints. Their addresses
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may have changed since the last time we ran the program. */
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may have changed since the last time we ran the program. */
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remove_solib_event_breakpoints ();
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remove_solib_event_breakpoints ();
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if (symfile_objfile == NULL)
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if (symfile_objfile == NULL)
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return;
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return;
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/* First see if the objfile was dynamically linked. */
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/* First see if the objfile was dynamically linked. */
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shlib_info = bfd_get_section_by_name (symfile_objfile->obfd, "$SHLIB_INFO$");
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shlib_info = bfd_get_section_by_name (symfile_objfile->obfd, "$SHLIB_INFO$");
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if (!shlib_info)
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if (!shlib_info)
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return;
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return;
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/* It's got a $SHLIB_INFO$ section, make sure it's not empty. */
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/* It's got a $SHLIB_INFO$ section, make sure it's not empty. */
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if (bfd_section_size (symfile_objfile->obfd, shlib_info) == 0)
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if (bfd_section_size (symfile_objfile->obfd, shlib_info) == 0)
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return;
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return;
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have_endo = 0;
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have_endo = 0;
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/* Slam the pid of the process into __d_pid.
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/* Slam the pid of the process into __d_pid.
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|
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We used to warn when this failed, but that warning is only useful
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We used to warn when this failed, but that warning is only useful
|
on very old HP systems (hpux9 and older). The warnings are an
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on very old HP systems (hpux9 and older). The warnings are an
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annoyance to users of modern systems and foul up the testsuite as
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annoyance to users of modern systems and foul up the testsuite as
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well. As a result, the warnings have been disabled. */
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well. As a result, the warnings have been disabled. */
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msymbol = lookup_minimal_symbol ("__d_pid", NULL, symfile_objfile);
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msymbol = lookup_minimal_symbol ("__d_pid", NULL, symfile_objfile);
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if (msymbol == NULL)
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if (msymbol == NULL)
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goto keep_going;
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goto keep_going;
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|
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anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
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anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
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store_unsigned_integer (buf, 4, PIDGET (inferior_ptid));
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store_unsigned_integer (buf, 4, PIDGET (inferior_ptid));
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status = target_write_memory (anaddr, buf, 4);
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status = target_write_memory (anaddr, buf, 4);
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if (status != 0)
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if (status != 0)
|
{
|
{
|
warning (_("\
|
warning (_("\
|
Unable to write __d_pid.\n\
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Unable to write __d_pid.\n\
|
Suggest linking with /opt/langtools/lib/end.o.\n\
|
Suggest linking with /opt/langtools/lib/end.o.\n\
|
GDB will be unable to track shl_load/shl_unload calls"));
|
GDB will be unable to track shl_load/shl_unload calls"));
|
goto keep_going;
|
goto keep_going;
|
}
|
}
|
|
|
/* Get the value of _DLD_HOOK (an export stub) and put it in __dld_hook;
|
/* Get the value of _DLD_HOOK (an export stub) and put it in __dld_hook;
|
This will force the dynamic linker to call __d_trap when significant
|
This will force the dynamic linker to call __d_trap when significant
|
events occur.
|
events occur.
|
|
|
Note that the above is the pre-HP-UX 9.0 behaviour. At 9.0 and above,
|
Note that the above is the pre-HP-UX 9.0 behaviour. At 9.0 and above,
|
the dld provides an export stub named "__d_trap" as well as the
|
the dld provides an export stub named "__d_trap" as well as the
|
function named "__d_trap" itself, but doesn't provide "_DLD_HOOK".
|
function named "__d_trap" itself, but doesn't provide "_DLD_HOOK".
|
We'll look first for the old flavor and then the new.
|
We'll look first for the old flavor and then the new.
|
*/
|
*/
|
msymbol = lookup_minimal_symbol ("_DLD_HOOK", NULL, symfile_objfile);
|
msymbol = lookup_minimal_symbol ("_DLD_HOOK", NULL, symfile_objfile);
|
if (msymbol == NULL)
|
if (msymbol == NULL)
|
msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile);
|
msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile);
|
if (msymbol == NULL)
|
if (msymbol == NULL)
|
{
|
{
|
warning (_("\
|
warning (_("\
|
Unable to find _DLD_HOOK symbol in object file.\n\
|
Unable to find _DLD_HOOK symbol in object file.\n\
|
Suggest linking with /opt/langtools/lib/end.o.\n\
|
Suggest linking with /opt/langtools/lib/end.o.\n\
|
GDB will be unable to track shl_load/shl_unload calls"));
|
GDB will be unable to track shl_load/shl_unload calls"));
|
goto keep_going;
|
goto keep_going;
|
}
|
}
|
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
|
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
|
dld_cache.hook.address = anaddr;
|
dld_cache.hook.address = anaddr;
|
|
|
/* Grrr, this might not be an export symbol! We have to find the
|
/* Grrr, this might not be an export symbol! We have to find the
|
export stub. */
|
export stub. */
|
msymbol = hppa_lookup_stub_minimal_symbol (SYMBOL_LINKAGE_NAME (msymbol),
|
msymbol = hppa_lookup_stub_minimal_symbol (SYMBOL_LINKAGE_NAME (msymbol),
|
EXPORT);
|
EXPORT);
|
if (msymbol != NULL)
|
if (msymbol != NULL)
|
{
|
{
|
anaddr = SYMBOL_VALUE (msymbol);
|
anaddr = SYMBOL_VALUE (msymbol);
|
dld_cache.hook_stub.address = anaddr;
|
dld_cache.hook_stub.address = anaddr;
|
}
|
}
|
store_unsigned_integer (buf, 4, anaddr);
|
store_unsigned_integer (buf, 4, anaddr);
|
|
|
msymbol = lookup_minimal_symbol ("__dld_hook", NULL, symfile_objfile);
|
msymbol = lookup_minimal_symbol ("__dld_hook", NULL, symfile_objfile);
|
if (msymbol == NULL)
|
if (msymbol == NULL)
|
{
|
{
|
warning (_("\
|
warning (_("\
|
Unable to find __dld_hook symbol in object file.\n\
|
Unable to find __dld_hook symbol in object file.\n\
|
Suggest linking with /opt/langtools/lib/end.o.\n\
|
Suggest linking with /opt/langtools/lib/end.o.\n\
|
GDB will be unable to track shl_load/shl_unload calls"));
|
GDB will be unable to track shl_load/shl_unload calls"));
|
goto keep_going;
|
goto keep_going;
|
}
|
}
|
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
|
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
|
status = target_write_memory (anaddr, buf, 4);
|
status = target_write_memory (anaddr, buf, 4);
|
|
|
/* Now set a shlib_event breakpoint at __d_trap so we can track
|
/* Now set a shlib_event breakpoint at __d_trap so we can track
|
significant shared library events. */
|
significant shared library events. */
|
msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile);
|
msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile);
|
if (msymbol == NULL)
|
if (msymbol == NULL)
|
{
|
{
|
warning (_("\
|
warning (_("\
|
Unable to find __dld_d_trap symbol in object file.\n\
|
Unable to find __dld_d_trap symbol in object file.\n\
|
Suggest linking with /opt/langtools/lib/end.o.\n\
|
Suggest linking with /opt/langtools/lib/end.o.\n\
|
GDB will be unable to track shl_load/shl_unload calls"));
|
GDB will be unable to track shl_load/shl_unload calls"));
|
goto keep_going;
|
goto keep_going;
|
}
|
}
|
create_solib_event_breakpoint (SYMBOL_VALUE_ADDRESS (msymbol));
|
create_solib_event_breakpoint (SYMBOL_VALUE_ADDRESS (msymbol));
|
|
|
/* We have all the support usually found in end.o, so we can track
|
/* We have all the support usually found in end.o, so we can track
|
shl_load and shl_unload calls. */
|
shl_load and shl_unload calls. */
|
have_endo = 1;
|
have_endo = 1;
|
|
|
keep_going:
|
keep_going:
|
|
|
/* Get the address of __dld_flags, if no such symbol exists, then we can
|
/* Get the address of __dld_flags, if no such symbol exists, then we can
|
not debug the shared code. */
|
not debug the shared code. */
|
msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
|
msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
|
if (msymbol == NULL)
|
if (msymbol == NULL)
|
{
|
{
|
error (_("Unable to find __dld_flags symbol in object file."));
|
error (_("Unable to find __dld_flags symbol in object file."));
|
}
|
}
|
|
|
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
|
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
|
|
|
/* Read the current contents. */
|
/* Read the current contents. */
|
status = target_read_memory (anaddr, buf, 4);
|
status = target_read_memory (anaddr, buf, 4);
|
if (status != 0)
|
if (status != 0)
|
error (_("Unable to read __dld_flags."));
|
error (_("Unable to read __dld_flags."));
|
dld_flags = extract_unsigned_integer (buf, 4);
|
dld_flags = extract_unsigned_integer (buf, 4);
|
|
|
/* Turn on the flags we care about. */
|
/* Turn on the flags we care about. */
|
dld_flags |= DLD_FLAGS_MAPPRIVATE;
|
dld_flags |= DLD_FLAGS_MAPPRIVATE;
|
if (have_endo)
|
if (have_endo)
|
dld_flags |= DLD_FLAGS_HOOKVALID;
|
dld_flags |= DLD_FLAGS_HOOKVALID;
|
store_unsigned_integer (buf, 4, dld_flags);
|
store_unsigned_integer (buf, 4, dld_flags);
|
status = target_write_memory (anaddr, buf, 4);
|
status = target_write_memory (anaddr, buf, 4);
|
if (status != 0)
|
if (status != 0)
|
error (_("Unable to write __dld_flags."));
|
error (_("Unable to write __dld_flags."));
|
|
|
/* Now find the address of _start and set a breakpoint there.
|
/* Now find the address of _start and set a breakpoint there.
|
We still need this code for two reasons:
|
We still need this code for two reasons:
|
|
|
* Not all sites have /opt/langtools/lib/end.o, so it's not always
|
* Not all sites have /opt/langtools/lib/end.o, so it's not always
|
possible to track the dynamic linker's events.
|
possible to track the dynamic linker's events.
|
|
|
* At this time no events are triggered for shared libraries
|
* At this time no events are triggered for shared libraries
|
loaded at startup time (what a crock). */
|
loaded at startup time (what a crock). */
|
|
|
msymbol = lookup_minimal_symbol ("_start", NULL, symfile_objfile);
|
msymbol = lookup_minimal_symbol ("_start", NULL, symfile_objfile);
|
if (msymbol == NULL)
|
if (msymbol == NULL)
|
error (_("Unable to find _start symbol in object file."));
|
error (_("Unable to find _start symbol in object file."));
|
|
|
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
|
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
|
|
|
/* Make the breakpoint at "_start" a shared library event breakpoint. */
|
/* Make the breakpoint at "_start" a shared library event breakpoint. */
|
create_solib_event_breakpoint (anaddr);
|
create_solib_event_breakpoint (anaddr);
|
|
|
clear_symtab_users ();
|
clear_symtab_users ();
|
}
|
}
|
|
|
static void
|
static void
|
som_special_symbol_handling (void)
|
som_special_symbol_handling (void)
|
{
|
{
|
}
|
}
|
|
|
static void
|
static void
|
som_solib_desire_dynamic_linker_symbols (void)
|
som_solib_desire_dynamic_linker_symbols (void)
|
{
|
{
|
struct objfile *objfile;
|
struct objfile *objfile;
|
struct unwind_table_entry *u;
|
struct unwind_table_entry *u;
|
struct minimal_symbol *dld_msymbol;
|
struct minimal_symbol *dld_msymbol;
|
|
|
/* Do we already know the value of these symbols? If so, then
|
/* Do we already know the value of these symbols? If so, then
|
we've no work to do.
|
we've no work to do.
|
|
|
(If you add clauses to this test, be sure to likewise update the
|
(If you add clauses to this test, be sure to likewise update the
|
test within the loop.)
|
test within the loop.)
|
*/
|
*/
|
if (dld_cache.is_valid)
|
if (dld_cache.is_valid)
|
return;
|
return;
|
|
|
ALL_OBJFILES (objfile)
|
ALL_OBJFILES (objfile)
|
{
|
{
|
dld_msymbol = lookup_minimal_symbol ("shl_load", NULL, objfile);
|
dld_msymbol = lookup_minimal_symbol ("shl_load", NULL, objfile);
|
if (dld_msymbol != NULL)
|
if (dld_msymbol != NULL)
|
{
|
{
|
dld_cache.load.address = SYMBOL_VALUE (dld_msymbol);
|
dld_cache.load.address = SYMBOL_VALUE (dld_msymbol);
|
dld_cache.load.unwind = find_unwind_entry (dld_cache.load.address);
|
dld_cache.load.unwind = find_unwind_entry (dld_cache.load.address);
|
}
|
}
|
|
|
dld_msymbol = lookup_minimal_symbol_solib_trampoline ("shl_load",
|
dld_msymbol = lookup_minimal_symbol_solib_trampoline ("shl_load",
|
objfile);
|
objfile);
|
if (dld_msymbol != NULL)
|
if (dld_msymbol != NULL)
|
{
|
{
|
if (SYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
|
if (SYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
|
{
|
{
|
u = find_unwind_entry (SYMBOL_VALUE (dld_msymbol));
|
u = find_unwind_entry (SYMBOL_VALUE (dld_msymbol));
|
if ((u != NULL) && (u->stub_unwind.stub_type == EXPORT))
|
if ((u != NULL) && (u->stub_unwind.stub_type == EXPORT))
|
{
|
{
|
dld_cache.load_stub.address = SYMBOL_VALUE (dld_msymbol);
|
dld_cache.load_stub.address = SYMBOL_VALUE (dld_msymbol);
|
dld_cache.load_stub.unwind = u;
|
dld_cache.load_stub.unwind = u;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
dld_msymbol = lookup_minimal_symbol ("shl_unload", NULL, objfile);
|
dld_msymbol = lookup_minimal_symbol ("shl_unload", NULL, objfile);
|
if (dld_msymbol != NULL)
|
if (dld_msymbol != NULL)
|
{
|
{
|
dld_cache.unload.address = SYMBOL_VALUE (dld_msymbol);
|
dld_cache.unload.address = SYMBOL_VALUE (dld_msymbol);
|
dld_cache.unload.unwind = find_unwind_entry (dld_cache.unload.address);
|
dld_cache.unload.unwind = find_unwind_entry (dld_cache.unload.address);
|
|
|
/* ??rehrauer: I'm not sure exactly what this is, but it appears
|
/* ??rehrauer: I'm not sure exactly what this is, but it appears
|
that on some HPUX 10.x versions, there's two unwind regions to
|
that on some HPUX 10.x versions, there's two unwind regions to
|
cover the body of "shl_unload", the second being 4 bytes past
|
cover the body of "shl_unload", the second being 4 bytes past
|
the end of the first. This is a large hack to handle that
|
the end of the first. This is a large hack to handle that
|
case, but since I don't seem to have any legitimate way to
|
case, but since I don't seem to have any legitimate way to
|
look for this thing via the symbol table...
|
look for this thing via the symbol table...
|
*/
|
*/
|
if (dld_cache.unload.unwind != NULL)
|
if (dld_cache.unload.unwind != NULL)
|
{
|
{
|
u = find_unwind_entry (dld_cache.unload.unwind->region_end + 4);
|
u = find_unwind_entry (dld_cache.unload.unwind->region_end + 4);
|
if (u != NULL)
|
if (u != NULL)
|
{
|
{
|
dld_cache.unload2.address = u->region_start;
|
dld_cache.unload2.address = u->region_start;
|
dld_cache.unload2.unwind = u;
|
dld_cache.unload2.unwind = u;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
dld_msymbol = lookup_minimal_symbol_solib_trampoline ("shl_unload",
|
dld_msymbol = lookup_minimal_symbol_solib_trampoline ("shl_unload",
|
objfile);
|
objfile);
|
if (dld_msymbol != NULL)
|
if (dld_msymbol != NULL)
|
{
|
{
|
if (SYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
|
if (SYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
|
{
|
{
|
u = find_unwind_entry (SYMBOL_VALUE (dld_msymbol));
|
u = find_unwind_entry (SYMBOL_VALUE (dld_msymbol));
|
if ((u != NULL) && (u->stub_unwind.stub_type == EXPORT))
|
if ((u != NULL) && (u->stub_unwind.stub_type == EXPORT))
|
{
|
{
|
dld_cache.unload_stub.address = SYMBOL_VALUE (dld_msymbol);
|
dld_cache.unload_stub.address = SYMBOL_VALUE (dld_msymbol);
|
dld_cache.unload_stub.unwind = u;
|
dld_cache.unload_stub.unwind = u;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Did we find everything we were looking for? If so, stop. */
|
/* Did we find everything we were looking for? If so, stop. */
|
if ((dld_cache.load.address != 0)
|
if ((dld_cache.load.address != 0)
|
&& (dld_cache.load_stub.address != 0)
|
&& (dld_cache.load_stub.address != 0)
|
&& (dld_cache.unload.address != 0)
|
&& (dld_cache.unload.address != 0)
|
&& (dld_cache.unload_stub.address != 0))
|
&& (dld_cache.unload_stub.address != 0))
|
{
|
{
|
dld_cache.is_valid = 1;
|
dld_cache.is_valid = 1;
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
dld_cache.hook.unwind = find_unwind_entry (dld_cache.hook.address);
|
dld_cache.hook.unwind = find_unwind_entry (dld_cache.hook.address);
|
dld_cache.hook_stub.unwind = find_unwind_entry (dld_cache.hook_stub.address);
|
dld_cache.hook_stub.unwind = find_unwind_entry (dld_cache.hook_stub.address);
|
|
|
/* We're prepared not to find some of these symbols, which is why
|
/* We're prepared not to find some of these symbols, which is why
|
this function is a "desire" operation, and not a "require".
|
this function is a "desire" operation, and not a "require".
|
*/
|
*/
|
}
|
}
|
|
|
static int
|
static int
|
som_in_dynsym_resolve_code (CORE_ADDR pc)
|
som_in_dynsym_resolve_code (CORE_ADDR pc)
|
{
|
{
|
struct unwind_table_entry *u_pc;
|
struct unwind_table_entry *u_pc;
|
|
|
/* Are we in the dld itself?
|
/* Are we in the dld itself?
|
|
|
??rehrauer: Large hack -- We'll assume that any address in a
|
??rehrauer: Large hack -- We'll assume that any address in a
|
shared text region is the dld's text. This would obviously
|
shared text region is the dld's text. This would obviously
|
fall down if the user attached to a process, whose shlibs
|
fall down if the user attached to a process, whose shlibs
|
weren't mapped to a (writeable) private region. However, in
|
weren't mapped to a (writeable) private region. However, in
|
that case the debugger probably isn't able to set the fundamental
|
that case the debugger probably isn't able to set the fundamental
|
breakpoint in the dld callback anyways, so this hack should be
|
breakpoint in the dld callback anyways, so this hack should be
|
safe.
|
safe.
|
*/
|
*/
|
if ((pc & (CORE_ADDR) 0xc0000000) == (CORE_ADDR) 0xc0000000)
|
if ((pc & (CORE_ADDR) 0xc0000000) == (CORE_ADDR) 0xc0000000)
|
return 1;
|
return 1;
|
|
|
/* Cache the address of some symbols that are part of the dynamic
|
/* Cache the address of some symbols that are part of the dynamic
|
linker, if not already known.
|
linker, if not already known.
|
*/
|
*/
|
som_solib_desire_dynamic_linker_symbols ();
|
som_solib_desire_dynamic_linker_symbols ();
|
|
|
/* Are we in the dld callback? Or its export stub? */
|
/* Are we in the dld callback? Or its export stub? */
|
u_pc = find_unwind_entry (pc);
|
u_pc = find_unwind_entry (pc);
|
if (u_pc == NULL)
|
if (u_pc == NULL)
|
return 0;
|
return 0;
|
|
|
if ((u_pc == dld_cache.hook.unwind) || (u_pc == dld_cache.hook_stub.unwind))
|
if ((u_pc == dld_cache.hook.unwind) || (u_pc == dld_cache.hook_stub.unwind))
|
return 1;
|
return 1;
|
|
|
/* Or the interface of the dld (i.e., "shl_load" or friends)? */
|
/* Or the interface of the dld (i.e., "shl_load" or friends)? */
|
if ((u_pc == dld_cache.load.unwind)
|
if ((u_pc == dld_cache.load.unwind)
|
|| (u_pc == dld_cache.unload.unwind)
|
|| (u_pc == dld_cache.unload.unwind)
|
|| (u_pc == dld_cache.unload2.unwind)
|
|| (u_pc == dld_cache.unload2.unwind)
|
|| (u_pc == dld_cache.load_stub.unwind)
|
|| (u_pc == dld_cache.load_stub.unwind)
|
|| (u_pc == dld_cache.unload_stub.unwind))
|
|| (u_pc == dld_cache.unload_stub.unwind))
|
return 1;
|
return 1;
|
|
|
/* Apparently this address isn't part of the dld's text. */
|
/* Apparently this address isn't part of the dld's text. */
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static void
|
static void
|
som_clear_solib (void)
|
som_clear_solib (void)
|
{
|
{
|
}
|
}
|
|
|
struct dld_list {
|
struct dld_list {
|
char name[4];
|
char name[4];
|
char info[4];
|
char info[4];
|
char text_addr[4];
|
char text_addr[4];
|
char text_link_addr[4];
|
char text_link_addr[4];
|
char text_end[4];
|
char text_end[4];
|
char data_start[4];
|
char data_start[4];
|
char bss_start[4];
|
char bss_start[4];
|
char data_end[4];
|
char data_end[4];
|
char got_value[4];
|
char got_value[4];
|
char next[4];
|
char next[4];
|
char tsd_start_addr_ptr[4];
|
char tsd_start_addr_ptr[4];
|
};
|
};
|
|
|
static CORE_ADDR
|
static CORE_ADDR
|
link_map_start (void)
|
link_map_start (void)
|
{
|
{
|
struct minimal_symbol *sym;
|
struct minimal_symbol *sym;
|
CORE_ADDR addr;
|
CORE_ADDR addr;
|
char buf[4];
|
char buf[4];
|
unsigned int dld_flags;
|
unsigned int dld_flags;
|
|
|
sym = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
|
sym = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
|
if (!sym)
|
if (!sym)
|
error (_("Unable to find __dld_flags symbol in object file."));
|
error (_("Unable to find __dld_flags symbol in object file."));
|
addr = SYMBOL_VALUE_ADDRESS (sym);
|
addr = SYMBOL_VALUE_ADDRESS (sym);
|
read_memory (addr, buf, 4);
|
read_memory (addr, buf, 4);
|
dld_flags = extract_unsigned_integer (buf, 4);
|
dld_flags = extract_unsigned_integer (buf, 4);
|
if ((dld_flags & DLD_FLAGS_LISTVALID) == 0)
|
if ((dld_flags & DLD_FLAGS_LISTVALID) == 0)
|
error (_("__dld_list is not valid according to __dld_flags."));
|
error (_("__dld_list is not valid according to __dld_flags."));
|
|
|
/* If the libraries were not mapped private, warn the user. */
|
/* If the libraries were not mapped private, warn the user. */
|
if ((dld_flags & DLD_FLAGS_MAPPRIVATE) == 0)
|
if ((dld_flags & DLD_FLAGS_MAPPRIVATE) == 0)
|
warning (_("The shared libraries were not privately mapped; setting a\n"
|
warning (_("The shared libraries were not privately mapped; setting a\n"
|
"breakpoint in a shared library will not work until you rerun the "
|
"breakpoint in a shared library will not work until you rerun the "
|
"program.\n"));
|
"program.\n"));
|
|
|
sym = lookup_minimal_symbol ("__dld_list", NULL, NULL);
|
sym = lookup_minimal_symbol ("__dld_list", NULL, NULL);
|
if (!sym)
|
if (!sym)
|
{
|
{
|
/* Older crt0.o files (hpux8) don't have __dld_list as a symbol,
|
/* Older crt0.o files (hpux8) don't have __dld_list as a symbol,
|
but the data is still available if you know where to look. */
|
but the data is still available if you know where to look. */
|
sym = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
|
sym = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
|
if (!sym)
|
if (!sym)
|
{
|
{
|
error (_("Unable to find dynamic library list."));
|
error (_("Unable to find dynamic library list."));
|
return 0;
|
return 0;
|
}
|
}
|
addr = SYMBOL_VALUE_ADDRESS (sym) - 8;
|
addr = SYMBOL_VALUE_ADDRESS (sym) - 8;
|
}
|
}
|
else
|
else
|
addr = SYMBOL_VALUE_ADDRESS (sym);
|
addr = SYMBOL_VALUE_ADDRESS (sym);
|
|
|
read_memory (addr, buf, 4);
|
read_memory (addr, buf, 4);
|
addr = extract_unsigned_integer (buf, 4);
|
addr = extract_unsigned_integer (buf, 4);
|
if (addr == 0)
|
if (addr == 0)
|
return 0;
|
return 0;
|
|
|
read_memory (addr, buf, 4);
|
read_memory (addr, buf, 4);
|
return extract_unsigned_integer (buf, 4);
|
return extract_unsigned_integer (buf, 4);
|
}
|
}
|
|
|
/* Does this so's name match the main binary? */
|
/* Does this so's name match the main binary? */
|
static int
|
static int
|
match_main (const char *name)
|
match_main (const char *name)
|
{
|
{
|
return strcmp (name, symfile_objfile->name) == 0;
|
return strcmp (name, symfile_objfile->name) == 0;
|
}
|
}
|
|
|
static struct so_list *
|
static struct so_list *
|
som_current_sos (void)
|
som_current_sos (void)
|
{
|
{
|
CORE_ADDR lm;
|
CORE_ADDR lm;
|
struct so_list *head = 0;
|
struct so_list *head = 0;
|
struct so_list **link_ptr = &head;
|
struct so_list **link_ptr = &head;
|
|
|
for (lm = link_map_start (); lm; )
|
for (lm = link_map_start (); lm; )
|
{
|
{
|
char *namebuf;
|
char *namebuf;
|
CORE_ADDR addr;
|
CORE_ADDR addr;
|
struct so_list *new;
|
struct so_list *new;
|
struct cleanup *old_chain;
|
struct cleanup *old_chain;
|
int errcode;
|
int errcode;
|
struct dld_list dbuf;
|
struct dld_list dbuf;
|
char tsdbuf[4];
|
char tsdbuf[4];
|
|
|
new = (struct so_list *) xmalloc (sizeof (struct so_list));
|
new = (struct so_list *) xmalloc (sizeof (struct so_list));
|
old_chain = make_cleanup (xfree, new);
|
old_chain = make_cleanup (xfree, new);
|
|
|
memset (new, 0, sizeof (*new));
|
memset (new, 0, sizeof (*new));
|
new->lm_info = xmalloc (sizeof (struct lm_info));
|
new->lm_info = xmalloc (sizeof (struct lm_info));
|
make_cleanup (xfree, new->lm_info);
|
make_cleanup (xfree, new->lm_info);
|
|
|
read_memory (lm, (gdb_byte *)&dbuf, sizeof (struct dld_list));
|
read_memory (lm, (gdb_byte *)&dbuf, sizeof (struct dld_list));
|
|
|
addr = extract_unsigned_integer ((gdb_byte *)&dbuf.name,
|
addr = extract_unsigned_integer ((gdb_byte *)&dbuf.name,
|
sizeof (dbuf.name));
|
sizeof (dbuf.name));
|
target_read_string (addr, &namebuf, SO_NAME_MAX_PATH_SIZE - 1, &errcode);
|
target_read_string (addr, &namebuf, SO_NAME_MAX_PATH_SIZE - 1, &errcode);
|
if (errcode != 0)
|
if (errcode != 0)
|
warning (_("Can't read pathname for load map: %s."),
|
warning (_("Can't read pathname for load map: %s."),
|
safe_strerror (errcode));
|
safe_strerror (errcode));
|
else
|
else
|
{
|
{
|
strncpy (new->so_name, namebuf, SO_NAME_MAX_PATH_SIZE - 1);
|
strncpy (new->so_name, namebuf, SO_NAME_MAX_PATH_SIZE - 1);
|
new->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
|
new->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
|
xfree (namebuf);
|
xfree (namebuf);
|
strcpy (new->so_original_name, new->so_name);
|
strcpy (new->so_original_name, new->so_name);
|
}
|
}
|
|
|
if (new->so_name[0] && !match_main (new->so_name))
|
if (new->so_name[0] && !match_main (new->so_name))
|
{
|
{
|
struct lm_info *lmi = new->lm_info;
|
struct lm_info *lmi = new->lm_info;
|
unsigned int tmp;
|
unsigned int tmp;
|
|
|
lmi->lm_addr = lm;
|
lmi->lm_addr = lm;
|
|
|
#define EXTRACT(_fld) \
|
#define EXTRACT(_fld) \
|
extract_unsigned_integer ((gdb_byte *)&dbuf._fld, sizeof (dbuf._fld));
|
extract_unsigned_integer ((gdb_byte *)&dbuf._fld, sizeof (dbuf._fld));
|
|
|
lmi->text_addr = EXTRACT (text_addr);
|
lmi->text_addr = EXTRACT (text_addr);
|
tmp = EXTRACT (info);
|
tmp = EXTRACT (info);
|
lmi->library_version = (tmp >> 16) & 0xffff;
|
lmi->library_version = (tmp >> 16) & 0xffff;
|
lmi->bind_mode = (tmp >> 8) & 0xff;
|
lmi->bind_mode = (tmp >> 8) & 0xff;
|
lmi->struct_version = tmp & 0xff;
|
lmi->struct_version = tmp & 0xff;
|
lmi->text_link_addr = EXTRACT (text_link_addr);
|
lmi->text_link_addr = EXTRACT (text_link_addr);
|
lmi->text_end = EXTRACT (text_end);
|
lmi->text_end = EXTRACT (text_end);
|
lmi->data_start = EXTRACT (data_start);
|
lmi->data_start = EXTRACT (data_start);
|
lmi->bss_start = EXTRACT (bss_start);
|
lmi->bss_start = EXTRACT (bss_start);
|
lmi->data_end = EXTRACT (data_end);
|
lmi->data_end = EXTRACT (data_end);
|
lmi->got_value = EXTRACT (got_value);
|
lmi->got_value = EXTRACT (got_value);
|
tmp = EXTRACT (tsd_start_addr_ptr);
|
tmp = EXTRACT (tsd_start_addr_ptr);
|
read_memory (tmp, tsdbuf, 4);
|
read_memory (tmp, tsdbuf, 4);
|
lmi->tsd_start_addr = extract_unsigned_integer (tsdbuf, 4);
|
lmi->tsd_start_addr = extract_unsigned_integer (tsdbuf, 4);
|
|
|
#ifdef SOLIB_SOM_DBG
|
#ifdef SOLIB_SOM_DBG
|
printf ("\n+ library \"%s\" is described at 0x%s\n", new->so_name,
|
printf ("\n+ library \"%s\" is described at 0x%s\n", new->so_name,
|
paddr_nz (lm));
|
paddr_nz (lm));
|
printf (" 'version' is %d\n", new->lm_info->struct_version);
|
printf (" 'version' is %d\n", new->lm_info->struct_version);
|
printf (" 'bind_mode' is %d\n", new->lm_info->bind_mode);
|
printf (" 'bind_mode' is %d\n", new->lm_info->bind_mode);
|
printf (" 'library_version' is %d\n",
|
printf (" 'library_version' is %d\n",
|
new->lm_info->library_version);
|
new->lm_info->library_version);
|
printf (" 'text_addr' is 0x%s\n",
|
printf (" 'text_addr' is 0x%s\n",
|
paddr_nz (new->lm_info->text_addr));
|
paddr_nz (new->lm_info->text_addr));
|
printf (" 'text_link_addr' is 0x%s\n",
|
printf (" 'text_link_addr' is 0x%s\n",
|
paddr_nz (new->lm_info->text_link_addr));
|
paddr_nz (new->lm_info->text_link_addr));
|
printf (" 'text_end' is 0x%s\n",
|
printf (" 'text_end' is 0x%s\n",
|
paddr_nz (new->lm_info->text_end));
|
paddr_nz (new->lm_info->text_end));
|
printf (" 'data_start' is 0x%s\n",
|
printf (" 'data_start' is 0x%s\n",
|
paddr_nz (new->lm_info->data_start));
|
paddr_nz (new->lm_info->data_start));
|
printf (" 'bss_start' is 0x%s\n",
|
printf (" 'bss_start' is 0x%s\n",
|
paddr_nz (new->lm_info->bss_start));
|
paddr_nz (new->lm_info->bss_start));
|
printf (" 'data_end' is 0x%s\n",
|
printf (" 'data_end' is 0x%s\n",
|
paddr_nz (new->lm_info->data_end));
|
paddr_nz (new->lm_info->data_end));
|
printf (" 'got_value' is %s\n",
|
printf (" 'got_value' is %s\n",
|
paddr_nz (new->lm_info->got_value));
|
paddr_nz (new->lm_info->got_value));
|
printf (" 'tsd_start_addr' is 0x%s\n",
|
printf (" 'tsd_start_addr' is 0x%s\n",
|
paddr_nz (new->lm_info->tsd_start_addr));
|
paddr_nz (new->lm_info->tsd_start_addr));
|
#endif
|
#endif
|
|
|
new->addr_low = lmi->text_addr;
|
new->addr_low = lmi->text_addr;
|
new->addr_high = lmi->text_end;
|
new->addr_high = lmi->text_end;
|
|
|
/* Link the new object onto the list. */
|
/* Link the new object onto the list. */
|
new->next = NULL;
|
new->next = NULL;
|
*link_ptr = new;
|
*link_ptr = new;
|
link_ptr = &new->next;
|
link_ptr = &new->next;
|
}
|
}
|
else
|
else
|
{
|
{
|
free_so (new);
|
free_so (new);
|
}
|
}
|
|
|
lm = EXTRACT (next);
|
lm = EXTRACT (next);
|
discard_cleanups (old_chain);
|
discard_cleanups (old_chain);
|
#undef EXTRACT
|
#undef EXTRACT
|
}
|
}
|
|
|
/* TODO: The original somsolib code has logic to detect and eliminate
|
/* TODO: The original somsolib code has logic to detect and eliminate
|
duplicate entries. Do we need that? */
|
duplicate entries. Do we need that? */
|
|
|
return head;
|
return head;
|
}
|
}
|
|
|
static int
|
static int
|
som_open_symbol_file_object (void *from_ttyp)
|
som_open_symbol_file_object (void *from_ttyp)
|
{
|
{
|
CORE_ADDR lm, l_name;
|
CORE_ADDR lm, l_name;
|
char *filename;
|
char *filename;
|
int errcode;
|
int errcode;
|
int from_tty = *(int *)from_ttyp;
|
int from_tty = *(int *)from_ttyp;
|
char buf[4];
|
char buf[4];
|
|
|
if (symfile_objfile)
|
if (symfile_objfile)
|
if (!query ("Attempt to reload symbols from process? "))
|
if (!query ("Attempt to reload symbols from process? "))
|
return 0;
|
return 0;
|
|
|
/* First link map member should be the executable. */
|
/* First link map member should be the executable. */
|
if ((lm = link_map_start ()) == 0)
|
if ((lm = link_map_start ()) == 0)
|
return 0; /* failed somehow... */
|
return 0; /* failed somehow... */
|
|
|
/* Read address of name from target memory to GDB. */
|
/* Read address of name from target memory to GDB. */
|
read_memory (lm + offsetof (struct dld_list, name), buf, 4);
|
read_memory (lm + offsetof (struct dld_list, name), buf, 4);
|
|
|
/* Convert the address to host format. Assume that the address is
|
/* Convert the address to host format. Assume that the address is
|
unsigned. */
|
unsigned. */
|
l_name = extract_unsigned_integer (buf, 4);
|
l_name = extract_unsigned_integer (buf, 4);
|
|
|
if (l_name == 0)
|
if (l_name == 0)
|
return 0; /* No filename. */
|
return 0; /* No filename. */
|
|
|
/* Now fetch the filename from target memory. */
|
/* Now fetch the filename from target memory. */
|
target_read_string (l_name, &filename, SO_NAME_MAX_PATH_SIZE - 1, &errcode);
|
target_read_string (l_name, &filename, SO_NAME_MAX_PATH_SIZE - 1, &errcode);
|
|
|
if (errcode)
|
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));
|
safe_strerror (errcode));
|
return 0;
|
return 0;
|
}
|
}
|
|
|
make_cleanup (xfree, filename);
|
make_cleanup (xfree, filename);
|
/* Have a pathname: read the symbol file. */
|
/* Have a pathname: read the symbol file. */
|
symbol_file_add_main (filename, from_tty);
|
symbol_file_add_main (filename, from_tty);
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
static void
|
static void
|
som_free_so (struct so_list *so)
|
som_free_so (struct so_list *so)
|
{
|
{
|
xfree (so->lm_info);
|
xfree (so->lm_info);
|
}
|
}
|
|
|
static CORE_ADDR
|
static CORE_ADDR
|
som_solib_thread_start_addr (struct so_list *so)
|
som_solib_thread_start_addr (struct so_list *so)
|
{
|
{
|
return so->lm_info->tsd_start_addr;
|
return so->lm_info->tsd_start_addr;
|
}
|
}
|
|
|
/* Return the GOT value for the shared library in which ADDR belongs. If
|
/* Return the GOT value for the shared library in which ADDR belongs. If
|
ADDR isn't in any known shared library, return zero. */
|
ADDR isn't in any known shared library, return zero. */
|
|
|
static CORE_ADDR
|
static CORE_ADDR
|
som_solib_get_got_by_pc (CORE_ADDR addr)
|
som_solib_get_got_by_pc (CORE_ADDR addr)
|
{
|
{
|
struct so_list *so_list = master_so_list ();
|
struct so_list *so_list = master_so_list ();
|
CORE_ADDR got_value = 0;
|
CORE_ADDR got_value = 0;
|
|
|
while (so_list)
|
while (so_list)
|
{
|
{
|
if (so_list->lm_info->text_addr <= addr
|
if (so_list->lm_info->text_addr <= addr
|
&& so_list->lm_info->text_end > addr)
|
&& so_list->lm_info->text_end > addr)
|
{
|
{
|
got_value = so_list->lm_info->got_value;
|
got_value = so_list->lm_info->got_value;
|
break;
|
break;
|
}
|
}
|
so_list = so_list->next;
|
so_list = so_list->next;
|
}
|
}
|
return got_value;
|
return got_value;
|
}
|
}
|
|
|
/* Return the address of the handle of the shared library in which ADDR belongs.
|
/* Return the address of the handle of the shared library in which ADDR belongs.
|
If ADDR isn't in any known shared library, return zero. */
|
If ADDR isn't in any known shared library, return zero. */
|
/* this function is used in initialize_hp_cxx_exception_support in
|
/* this function is used in initialize_hp_cxx_exception_support in
|
hppa-hpux-tdep.c */
|
hppa-hpux-tdep.c */
|
|
|
static CORE_ADDR
|
static CORE_ADDR
|
som_solib_get_solib_by_pc (CORE_ADDR addr)
|
som_solib_get_solib_by_pc (CORE_ADDR addr)
|
{
|
{
|
struct so_list *so_list = master_so_list ();
|
struct so_list *so_list = master_so_list ();
|
|
|
while (so_list)
|
while (so_list)
|
{
|
{
|
if (so_list->lm_info->text_addr <= addr
|
if (so_list->lm_info->text_addr <= addr
|
&& so_list->lm_info->text_end > addr)
|
&& so_list->lm_info->text_end > addr)
|
{
|
{
|
break;
|
break;
|
}
|
}
|
so_list = so_list->next;
|
so_list = so_list->next;
|
}
|
}
|
if (so_list)
|
if (so_list)
|
return so_list->lm_info->lm_addr;
|
return so_list->lm_info->lm_addr;
|
else
|
else
|
return 0;
|
return 0;
|
}
|
}
|
|
|
|
|
static struct target_so_ops som_so_ops;
|
static struct target_so_ops som_so_ops;
|
|
|
extern initialize_file_ftype _initialize_som_solib; /* -Wmissing-prototypes */
|
extern initialize_file_ftype _initialize_som_solib; /* -Wmissing-prototypes */
|
|
|
void
|
void
|
_initialize_som_solib (void)
|
_initialize_som_solib (void)
|
{
|
{
|
som_so_ops.relocate_section_addresses = som_relocate_section_addresses;
|
som_so_ops.relocate_section_addresses = som_relocate_section_addresses;
|
som_so_ops.free_so = som_free_so;
|
som_so_ops.free_so = som_free_so;
|
som_so_ops.clear_solib = som_clear_solib;
|
som_so_ops.clear_solib = som_clear_solib;
|
som_so_ops.solib_create_inferior_hook = som_solib_create_inferior_hook;
|
som_so_ops.solib_create_inferior_hook = som_solib_create_inferior_hook;
|
som_so_ops.special_symbol_handling = som_special_symbol_handling;
|
som_so_ops.special_symbol_handling = som_special_symbol_handling;
|
som_so_ops.current_sos = som_current_sos;
|
som_so_ops.current_sos = som_current_sos;
|
som_so_ops.open_symbol_file_object = som_open_symbol_file_object;
|
som_so_ops.open_symbol_file_object = som_open_symbol_file_object;
|
som_so_ops.in_dynsym_resolve_code = som_in_dynsym_resolve_code;
|
som_so_ops.in_dynsym_resolve_code = som_in_dynsym_resolve_code;
|
}
|
}
|
|
|
void som_solib_select (struct gdbarch *gdbarch)
|
void som_solib_select (struct gdbarch *gdbarch)
|
{
|
{
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
set_solib_ops (gdbarch, &som_so_ops);
|
set_solib_ops (gdbarch, &som_so_ops);
|
|
|
tdep->solib_thread_start_addr = som_solib_thread_start_addr;
|
tdep->solib_thread_start_addr = som_solib_thread_start_addr;
|
tdep->solib_get_got_by_pc = som_solib_get_got_by_pc;
|
tdep->solib_get_got_by_pc = som_solib_get_got_by_pc;
|
tdep->solib_get_solib_by_pc = som_solib_get_solib_by_pc;
|
tdep->solib_get_solib_by_pc = som_solib_get_solib_by_pc;
|
}
|
}
|
|
|
/* The rest of these functions are not part of the solib interface; they
|
/* The rest of these functions are not part of the solib interface; they
|
are used by somread.c or hppa-hpux-tdep.c */
|
are used by somread.c or hppa-hpux-tdep.c */
|
|
|
int
|
int
|
som_solib_section_offsets (struct objfile *objfile,
|
som_solib_section_offsets (struct objfile *objfile,
|
struct section_offsets *offsets)
|
struct section_offsets *offsets)
|
{
|
{
|
struct so_list *so_list = master_so_list ();
|
struct so_list *so_list = master_so_list ();
|
|
|
while (so_list)
|
while (so_list)
|
{
|
{
|
/* Oh what a pain! We need the offsets before so_list->objfile
|
/* Oh what a pain! We need the offsets before so_list->objfile
|
is valid. The BFDs will never match. Make a best guess. */
|
is valid. The BFDs will never match. Make a best guess. */
|
if (strstr (objfile->name, so_list->so_name))
|
if (strstr (objfile->name, so_list->so_name))
|
{
|
{
|
asection *private_section;
|
asection *private_section;
|
|
|
/* The text offset is easy. */
|
/* The text offset is easy. */
|
offsets->offsets[SECT_OFF_TEXT (objfile)]
|
offsets->offsets[SECT_OFF_TEXT (objfile)]
|
= (so_list->lm_info->text_addr
|
= (so_list->lm_info->text_addr
|
- so_list->lm_info->text_link_addr);
|
- so_list->lm_info->text_link_addr);
|
offsets->offsets[SECT_OFF_RODATA (objfile)]
|
offsets->offsets[SECT_OFF_RODATA (objfile)]
|
= ANOFFSET (offsets, SECT_OFF_TEXT (objfile));
|
= ANOFFSET (offsets, SECT_OFF_TEXT (objfile));
|
|
|
/* We should look at presumed_dp in the SOM header, but
|
/* We should look at presumed_dp in the SOM header, but
|
that's not easily available. This should be OK though. */
|
that's not easily available. This should be OK though. */
|
private_section = bfd_get_section_by_name (objfile->obfd,
|
private_section = bfd_get_section_by_name (objfile->obfd,
|
"$PRIVATE$");
|
"$PRIVATE$");
|
if (!private_section)
|
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_DATA (objfile)] = 0;
|
offsets->offsets[SECT_OFF_BSS (objfile)] = 0;
|
offsets->offsets[SECT_OFF_BSS (objfile)] = 0;
|
return 1;
|
return 1;
|
}
|
}
|
offsets->offsets[SECT_OFF_DATA (objfile)]
|
offsets->offsets[SECT_OFF_DATA (objfile)]
|
= (so_list->lm_info->data_start - private_section->vma);
|
= (so_list->lm_info->data_start - private_section->vma);
|
offsets->offsets[SECT_OFF_BSS (objfile)]
|
offsets->offsets[SECT_OFF_BSS (objfile)]
|
= ANOFFSET (offsets, SECT_OFF_DATA (objfile));
|
= ANOFFSET (offsets, SECT_OFF_DATA (objfile));
|
return 1;
|
return 1;
|
}
|
}
|
so_list = so_list->next;
|
so_list = so_list->next;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
