+++ /dev/null
-/* Handle HP SOM shared libraries for GDB, the GNU Debugger.
-
- Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004 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
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- 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.
-
- Written by the Center for Software Science at the Univerity of Utah
- and by Cygnus Support. */
-
-
-#include "defs.h"
-
-#include "frame.h"
-#include "bfd.h"
-#include "som.h"
-#include "libhppa.h"
-#include "gdbcore.h"
-#include "symtab.h"
-#include "breakpoint.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "inferior.h"
-#include "gdb-stabs.h"
-#include "gdb_stat.h"
-#include "gdbcmd.h"
-#include "language.h"
-#include "regcache.h"
-#include "gdb_assert.h"
-#include "exec.h"
-#include "hppa-tdep.h"
-
-#include <fcntl.h>
-
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
-
-#ifndef SHL_LOAD
-#define SHL_LOAD 4
-#endif
-
-#ifndef SHL_UNLOAD
-#define SHL_UNLOAD 8
-#endif
-
-/* Uncomment this to turn on some debugging output.
- */
-
-/* #define SOLIB_DEBUG
- */
-
-/* This lives in hppa-tdep.c. */
-extern struct unwind_table_entry *find_unwind_entry (CORE_ADDR pc);
-
-/* These ought to be defined in some public interface, but aren't. They
- define the meaning of the various bits in the distinguished __dld_flags
- variable that is declared in every debuggable a.out on HP-UX, and that
- is shared between the debugger and the dynamic linker.
- */
-#define DLD_FLAGS_MAPPRIVATE 0x1
-#define DLD_FLAGS_HOOKVALID 0x2
-#define DLD_FLAGS_LISTVALID 0x4
-#define DLD_FLAGS_BOR_ENABLE 0x8
-
-/* TODO:
-
- * Support for hpux8 dynamic linker. */
-
-/* The basic structure which describes a dynamically loaded object. This
- data structure is private to the dynamic linker and isn't found in
- any HPUX include file. */
-
-struct som_solib_mapped_entry
- {
- /* The name of the library. */
- char *name;
-
- /* Version of this structure (it is expected to change again in hpux10). */
- unsigned char struct_version;
-
- /* Binding mode for this library. */
- unsigned char bind_mode;
-
- /* Version of this library. */
- short library_version;
-
- /* Start of text address,
- * link-time text location (length of text area),
- * end of text address. */
- CORE_ADDR text_addr;
- CORE_ADDR text_link_addr;
- CORE_ADDR text_end;
-
- /* Start of data, start of bss and end of data. */
- CORE_ADDR data_start;
- CORE_ADDR bss_start;
- CORE_ADDR data_end;
-
- /* Value of linkage pointer (%r19). */
- CORE_ADDR got_value;
-
- /* Next entry. */
- struct som_solib_mapped_entry *next;
-
- /* There are other fields, but I don't have information as to what is
- contained in them. */
-
- /* For versions from HPUX-10.30 and up */
-
- /* Address in target of offset from thread-local register of
- * start of this thread's data. I.e., the first thread-local
- * variable in this shared library starts at *(tsd_start_addr)
- * from that area pointed to by cr27 (mpsfu_hi).
- *
- * We do the indirection as soon as we read it, so from then
- * on it's the offset itself.
- */
- CORE_ADDR tsd_start_addr;
-
- /* Following this are longwords holding:
-
- * ?, ?, ?, ptr to -1, ptr to-1, ptr to lib name (leaf name),
- * ptr to __data_start, ptr to __data_end
- */
-
-
- };
-
-/* A structure to keep track of all the known shared objects. */
-struct so_list
- {
- struct som_solib_mapped_entry som_solib;
- struct objfile *objfile;
- bfd *abfd;
- struct section_table *sections;
- struct section_table *sections_end;
-/* elz: added this field to store the address in target space (in the
- library) of the library descriptor (handle) which we read into
- som_solib_mapped_entry structure */
- CORE_ADDR solib_addr;
- struct so_list *next;
-
- };
-
-static struct so_list *so_list_head;
-
-
-/* This is the cumulative size in bytes of the symbol tables of all
- shared objects on the so_list_head list. (When we say size, here
- we mean of the information before it is brought into memory and
- potentially expanded by GDB.) When adding a new shlib, this value
- is compared against the threshold size, held by auto_solib_limit
- (in megabytes). If adding symbols for the new shlib would cause
- the total size to exceed the threshold, then the new shlib's
- symbols are not loaded. */
-static LONGEST som_solib_total_st_size;
-
-/* When the threshold is reached for any shlib, we refuse to add
- symbols for subsequent shlibs, even if those shlibs' symbols would
- be small enough to fit under the threshold. (Although this may
- result in one, early large shlib preventing the loading of later,
- smalller shlibs' symbols, it allows us to issue one informational
- message. The alternative, to issue a message for each shlib whose
- symbols aren't loaded, could be a big annoyance where the threshold
- is exceeded due to a very large number of shlibs.)
- */
-static int som_solib_st_size_threshold_exceeded;
-
-/* These addresses should be filled in by som_solib_create_inferior_hook.
- They are also used elsewhere in this module.
- */
-typedef struct
- {
- CORE_ADDR address;
- struct unwind_table_entry *unwind;
- }
-addr_and_unwind_t;
-
-/* When adding fields, be sure to clear them in _initialize_som_solib. */
-static struct
- {
- int is_valid;
- addr_and_unwind_t hook;
- addr_and_unwind_t hook_stub;
- addr_and_unwind_t load;
- addr_and_unwind_t load_stub;
- addr_and_unwind_t unload;
- addr_and_unwind_t unload2;
- addr_and_unwind_t unload_stub;
- }
-dld_cache;
-
-
-
-static void som_sharedlibrary_info_command (char *, int);
-
-static void som_solib_sharedlibrary_command (char *, int);
-
-static LONGEST
-som_solib_sizeof_symbol_table (char *filename)
-{
- bfd *abfd;
- int desc;
- char *absolute_name;
- LONGEST st_size = (LONGEST) 0;
- asection *sect;
-
- /* We believe that filename was handed to us by the dynamic linker, and
- is therefore always an absolute path.
- */
- desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, filename,
- O_RDONLY | O_BINARY, 0, &absolute_name);
- if (desc < 0)
- {
- perror_with_name (filename);
- }
- filename = absolute_name;
-
- abfd = bfd_fdopenr (filename, gnutarget, desc);
- if (!abfd)
- {
- close (desc);
- make_cleanup (xfree, filename);
- error (_("\"%s\": can't open to read symbols: %s."), filename,
- bfd_errmsg (bfd_get_error ()));
- }
-
- if (!bfd_check_format (abfd, bfd_object)) /* Reads in section info */
- {
- bfd_close (abfd); /* This also closes desc */
- make_cleanup (xfree, filename);
- error (_("\"%s\": can't read symbols: %s."), filename,
- bfd_errmsg (bfd_get_error ()));
- }
-
- /* Sum the sizes of the various sections that compose debug info. */
-
- /* This contains non-DOC information. */
- sect = bfd_get_section_by_name (abfd, "$DEBUG$");
- if (sect)
- st_size += (LONGEST) bfd_section_size (abfd, sect);
-
- /* This contains DOC information. */
- sect = bfd_get_section_by_name (abfd, "$PINFO$");
- if (sect)
- st_size += (LONGEST) bfd_section_size (abfd, sect);
-
- bfd_close (abfd); /* This also closes desc */
- xfree (filename);
-
- /* Unfortunately, just summing the sizes of various debug info
- sections isn't a very accurate measurement of how much heap
- space the debugger will need to hold them. It also doesn't
- account for space needed by linker (aka "minimal") symbols.
-
- Anecdotal evidence suggests that just summing the sizes of
- debug-info-related sections understates the heap space needed
- to represent it internally by about an order of magnitude.
-
- Since it's not exactly brain surgery we're doing here, rather
- than attempt to more accurately measure the size of a shlib's
- symbol table in GDB's heap, we'll just apply a 10x fudge-
- factor to the debug info sections' size-sum. No, this doesn't
- account for minimal symbols in non-debuggable shlibs. But it
- all roughly washes out in the end.
- */
- return st_size * (LONGEST) 10;
-}
-
-
-static void
-som_solib_add_solib_objfile (struct so_list *so, char *name, int from_tty,
- CORE_ADDR text_addr)
-{
- struct hppa_objfile_private *obj_private;
- struct obj_section *s;
-
- so->objfile = symbol_file_add (name, from_tty, NULL, 0, OBJF_SHARED);
- so->abfd = so->objfile->obfd;
-
- /* syms_from_objfile has bizarre section offset code,
- so I do my own right here. */
- for (s = so->objfile->sections; s < so->objfile->sections_end; s++)
- {
- flagword aflag = bfd_get_section_flags(so->abfd, s->the_bfd_section);
- if (aflag & SEC_CODE)
- {
- s->addr += so->som_solib.text_addr - so->som_solib.text_link_addr;
- s->endaddr += so->som_solib.text_addr - so->som_solib.text_link_addr;
- }
- else if (aflag & SEC_DATA)
- {
- s->addr += so->som_solib.data_start;
- s->endaddr += so->som_solib.data_start;
- }
- else
- ;
- }
-
- /* Mark this as a shared library and save private data.
- */
- so->objfile->flags |= OBJF_SHARED;
-
- obj_private = (struct hppa_objfile_private *)
- objfile_data (so->objfile, hppa_objfile_priv_data);
- if (obj_private == NULL)
- {
- obj_private = (struct hppa_objfile_private *)
- obstack_alloc (&so->objfile->objfile_obstack,
- sizeof (struct hppa_objfile_private));
- set_objfile_data (so->objfile, hppa_objfile_priv_data, obj_private);
- obj_private->unwind_info = NULL;
- obj_private->so_info = NULL;
- }
-
- obj_private->so_info = so;
-
- if (!bfd_check_format (so->abfd, bfd_object))
- {
- error (_("\"%s\": not in executable format: %s."),
- name, bfd_errmsg (bfd_get_error ()));
- }
-}
-
-
-static void
-som_solib_load_symbols (struct so_list *so, char *name, int from_tty,
- CORE_ADDR text_addr, struct target_ops *target)
-{
- struct section_table *p;
- int status;
- char buf[4];
- CORE_ADDR presumed_data_start;
-
-#ifdef SOLIB_DEBUG
- printf ("--Adding symbols for shared library \"%s\"\n", name);
-#endif
-
- som_solib_add_solib_objfile (so, name, from_tty, text_addr);
-
- /* Now we need to build a section table for this library since
- we might be debugging a core file from a dynamically linked
- executable in which the libraries were not privately mapped. */
- if (build_section_table (so->abfd,
- &so->sections,
- &so->sections_end))
- {
- error (_("Unable to build section table for shared library\n."));
- return;
- }
-
- /* Relocate all the sections based on where they got loaded. */
- for (p = so->sections; p < so->sections_end; p++)
- {
- if (p->the_bfd_section->flags & SEC_CODE)
- {
- p->addr += ANOFFSET (so->objfile->section_offsets, SECT_OFF_TEXT (so->objfile));
- p->endaddr += ANOFFSET (so->objfile->section_offsets, SECT_OFF_TEXT (so->objfile));
- }
- else if (p->the_bfd_section->flags & SEC_DATA)
- {
- p->addr += ANOFFSET (so->objfile->section_offsets, SECT_OFF_DATA (so->objfile));
- p->endaddr += ANOFFSET (so->objfile->section_offsets, SECT_OFF_DATA (so->objfile));
- }
- }
-
- /* Now see if we need to map in the text and data for this shared
- library (for example debugging a core file which does not use
- private shared libraries.).
-
- Carefully peek at the first text address in the library. If the
- read succeeds, then the libraries were privately mapped and were
- included in the core dump file.
-
- If the peek failed, then the libraries were not privately mapped
- and are not in the core file, we'll have to read them in ourselves. */
- status = target_read_memory (text_addr, buf, 4);
- if (status != 0)
- {
- int old, new;
-
- new = so->sections_end - so->sections;
-
- old = target_resize_to_sections (target, new);
-
- /* Copy over the old data before it gets clobbered. */
- memcpy ((char *) (target->to_sections + old),
- so->sections,
- ((sizeof (struct section_table)) * new));
- }
-}
-
-
-/* FIXME: cagney/2003-02-01: This just isn't right. Given an address
- within the target's address space, this converts the value into an
- address within the host's (i.e., GDB's) address space. Given that
- the host/target address spaces are separate, this can't be right. */
-
-static void *
-hpux_address_to_host_pointer_hack (CORE_ADDR addr)
-{
- void *ptr;
-
- gdb_assert (sizeof (ptr) == TYPE_LENGTH (builtin_type_void_data_ptr));
- ADDRESS_TO_POINTER (builtin_type_void_data_ptr, &ptr, addr);
- return ptr;
-}
-
-/* Add symbols from shared libraries into the symtab list, unless the
- size threshold specified by auto_solib_limit (in megabytes) would
- be exceeded. */
-
-void
-som_solib_add (char *arg_string, int from_tty, struct target_ops *target, int readsyms)
-{
- struct minimal_symbol *msymbol;
- struct so_list *so_list_tail;
- CORE_ADDR addr;
- asection *shlib_info;
- int status;
- unsigned int dld_flags;
- char buf[4], *re_err;
- int threshold_warning_given = 0;
-
- /* First validate our arguments. */
- re_err = re_comp (arg_string ? arg_string : ".");
- if (re_err != NULL)
- {
- error (_("Invalid regexp: %s"), re_err);
- }
-
- /* If we're debugging a core file, or have attached to a running
- process, then som_solib_create_inferior_hook will not have been
- called.
-
- We need to first determine if we're dealing with a dynamically
- linked executable. If not, then return without an error or warning.
-
- We also need to examine __dld_flags to determine if the shared library
- list is valid and to determine if the libraries have been privately
- mapped. */
- if (symfile_objfile == NULL)
- return;
-
- /* First see if the objfile was dynamically linked. */
- shlib_info = bfd_get_section_by_name (symfile_objfile->obfd, "$SHLIB_INFO$");
- if (!shlib_info)
- return;
-
- /* It's got a $SHLIB_INFO$ section, make sure it's not empty. */
- if (bfd_section_size (symfile_objfile->obfd, shlib_info) == 0)
- return;
-
- msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
- if (msymbol == NULL)
- error (_("Unable to find __dld_flags symbol in object file."));
-
- addr = SYMBOL_VALUE_ADDRESS (msymbol);
- /* Read the current contents. */
- status = target_read_memory (addr, buf, 4);
- if (status != 0)
- error (_("Unable to read __dld_flags."));
- dld_flags = extract_unsigned_integer (buf, 4);
-
- /* __dld_list may not be valid. If not, then we punt, warning the user if
- we were called as a result of the add-symfile command.
- */
- if ((dld_flags & DLD_FLAGS_LISTVALID) == 0)
- {
- if (from_tty)
- error (_("__dld_list is not valid according to __dld_flags."));
- return;
- }
-
- /* 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 breakpoint\n\
-in a shared library will not work until you rerun the program."));
-
- msymbol = lookup_minimal_symbol ("__dld_list", NULL, NULL);
- if (!msymbol)
- {
- /* 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. */
- msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
- if (!msymbol)
- error (_("Unable to find dynamic library list."));
- addr = SYMBOL_VALUE_ADDRESS (msymbol) - 8;
- }
- else
- addr = SYMBOL_VALUE_ADDRESS (msymbol);
-
- status = target_read_memory (addr, buf, 4);
- if (status != 0)
- error (_("Unable to find dynamic library list."));
-
- addr = extract_unsigned_integer (buf, 4);
-
- /* If addr is zero, then we're using an old dynamic loader which
- doesn't maintain __dld_list. We'll have to use a completely
- different approach to get shared library information. */
- if (addr == 0)
- goto old_dld;
-
- /* Using the information in __dld_list is the preferred method
- to get at shared library information. It doesn't depend on
- any functions in /opt/langtools/lib/end.o and has a chance of working
- with hpux10 when it is released. */
- status = target_read_memory (addr, buf, 4);
- if (status != 0)
- error (_("Unable to find dynamic library list."));
-
- /* addr now holds the address of the first entry in the dynamic
- library list. */
- addr = extract_unsigned_integer (buf, 4);
-
- /* Now that we have a pointer to the dynamic library list, walk
- through it and add the symbols for each library. */
-
- so_list_tail = so_list_head;
- /* Find the end of the list of shared objects. */
- while (so_list_tail && so_list_tail->next)
- so_list_tail = so_list_tail->next;
-
-#ifdef SOLIB_DEBUG
- printf ("--About to read shared library list data\n");
-#endif
-
- /* "addr" will always point to the base of the
- * current data entry describing the current
- * shared library.
- */
- while (1)
- {
- CORE_ADDR name_addr, text_addr;
- unsigned int name_len;
- char *name;
- struct so_list *new_so;
- struct so_list *so_list = so_list_head;
- struct stat statbuf;
- LONGEST st_size;
- int is_main_program;
-
- if (addr == 0)
- break;
-
- /* Get a pointer to the name of this library. */
- status = target_read_memory (addr, buf, 4);
- if (status != 0)
- goto err;
-
- name_addr = extract_unsigned_integer (buf, 4);
- name_len = 0;
- while (1)
- {
- target_read_memory (name_addr + name_len, buf, 1);
- if (status != 0)
- goto err;
-
- name_len++;
- if (*buf == '\0')
- break;
- }
- name = alloca (name_len);
- status = target_read_memory (name_addr, name, name_len);
- if (status != 0)
- goto err;
-
- /* See if we've already loaded something with this name. */
- while (so_list)
- {
- if (!strcmp (so_list->som_solib.name, name))
- break;
- so_list = so_list->next;
- }
-
- /* See if the file exists. If not, give a warning, but don't
- die. */
- status = stat (name, &statbuf);
- if (status == -1)
- {
- warning (_("Can't find file %s referenced in dld_list."), name);
-
- status = target_read_memory (addr + 36, buf, 4);
- if (status != 0)
- goto err;
-
- addr = (CORE_ADDR) extract_unsigned_integer (buf, 4);
- continue;
- }
-
- /* If we've already loaded this one or it's the main program, skip it. */
- is_main_program = (strcmp (name, symfile_objfile->name) == 0);
- if (so_list || is_main_program)
- {
- /* This is the "next" pointer in the strcuture.
- */
- status = target_read_memory (addr + 36, buf, 4);
- if (status != 0)
- goto err;
-
- addr = (CORE_ADDR) extract_unsigned_integer (buf, 4);
-
- /* Record the main program's symbol table size. */
- if (is_main_program && !so_list)
- {
- st_size = som_solib_sizeof_symbol_table (name);
- som_solib_total_st_size += st_size;
- }
-
- /* Was this a shlib that we noted but didn't load the symbols for?
- If so, were we invoked this time from the command-line, via
- a 'sharedlibrary' or 'add-symbol-file' command? If yes to
- both, we'd better load the symbols this time.
- */
- if (from_tty && so_list && !is_main_program && (so_list->objfile == NULL))
- som_solib_load_symbols (so_list,
- name,
- from_tty,
- so_list->som_solib.text_addr,
- target);
-
- continue;
- }
-
- name = obsavestring (name, name_len - 1,
- &symfile_objfile->objfile_obstack);
-
- status = target_read_memory (addr + 8, buf, 4);
- if (status != 0)
- goto err;
-
- text_addr = extract_unsigned_integer (buf, 4);
-
- new_so = (struct so_list *) xmalloc (sizeof (struct so_list));
- memset ((char *) new_so, 0, sizeof (struct so_list));
- if (so_list_head == NULL)
- {
- so_list_head = new_so;
- so_list_tail = new_so;
- }
- else
- {
- so_list_tail->next = new_so;
- so_list_tail = new_so;
- }
-
- /* Fill in all the entries in GDB's shared library list.
- */
-
- new_so->solib_addr = addr;
- new_so->som_solib.name = name;
- status = target_read_memory (addr + 4, buf, 4);
- if (status != 0)
- goto err;
-
- new_so->som_solib.struct_version = extract_unsigned_integer (buf + 3, 1);
- new_so->som_solib.bind_mode = extract_unsigned_integer (buf + 2, 1);
- /* Following is "high water mark", highest version number
- * seen, rather than plain version number.
- */
- new_so->som_solib.library_version = extract_unsigned_integer (buf, 2);
- new_so->som_solib.text_addr = text_addr;
-
- /* Q: What about longword at "addr + 8"?
- * A: It's read above, out of order, into "text_addr".
- */
-
- status = target_read_memory (addr + 12, buf, 4);
- if (status != 0)
- goto err;
-
- new_so->som_solib.text_link_addr = extract_unsigned_integer (buf, 4);
-
- status = target_read_memory (addr + 16, buf, 4);
- if (status != 0)
- goto err;
-
- new_so->som_solib.text_end = extract_unsigned_integer (buf, 4);
-
- status = target_read_memory (addr + 20, buf, 4);
- if (status != 0)
- goto err;
-
- new_so->som_solib.data_start = extract_unsigned_integer (buf, 4);
-
- status = target_read_memory (addr + 24, buf, 4);
- if (status != 0)
- goto err;
-
- new_so->som_solib.bss_start = extract_unsigned_integer (buf, 4);
-
- status = target_read_memory (addr + 28, buf, 4);
- if (status != 0)
- goto err;
-
- new_so->som_solib.data_end = extract_unsigned_integer (buf, 4);
-
- status = target_read_memory (addr + 32, buf, 4);
- if (status != 0)
- goto err;
-
- new_so->som_solib.got_value = extract_unsigned_integer (buf, 4);
-
- status = target_read_memory (addr + 36, buf, 4);
- if (status != 0)
- goto err;
-
- /* FIXME: cagney/2003-02-01: I think som_solib.next should be a
- CORE_ADDR. */
- new_so->som_solib.next =
- hpux_address_to_host_pointer_hack (extract_unsigned_integer (buf, 4));
-
- /* Note that we don't re-set "addr" to the next pointer
- * until after we've read the trailing data.
- */
-
- status = target_read_memory (addr + 40, buf, 4);
- new_so->som_solib.tsd_start_addr = extract_unsigned_integer (buf, 4);
- if (status != 0)
- goto err;
-
- /* Now indirect via that value!
- */
- status = target_read_memory (new_so->som_solib.tsd_start_addr, buf, 4);
- new_so->som_solib.tsd_start_addr = extract_unsigned_integer (buf, 4);
- if (status != 0)
- goto err;
-#ifdef SOLIB_DEBUG
- printf ("\n+ library \"%s\" is described at 0x%x\n", name, addr);
- printf (" 'version' is %d\n", new_so->som_solib.struct_version);
- printf (" 'bind_mode' is %d\n", new_so->som_solib.bind_mode);
- printf (" 'library_version' is %d\n", new_so->som_solib.library_version);
- printf (" 'text_addr' is 0x%x\n", new_so->som_solib.text_addr);
- printf (" 'text_link_addr' is 0x%x\n", new_so->som_solib.text_link_addr);
- printf (" 'text_end' is 0x%x\n", new_so->som_solib.text_end);
- printf (" 'data_start' is 0x%x\n", new_so->som_solib.data_start);
- printf (" 'bss_start' is 0x%x\n", new_so->som_solib.bss_start);
- printf (" 'data_end' is 0x%x\n", new_so->som_solib.data_end);
- printf (" 'got_value' is %x\n", new_so->som_solib.got_value);
- printf (" 'next' is 0x%x\n", new_so->som_solib.next);
- printf (" 'tsd_start_addr' is 0x%x\n", new_so->som_solib.tsd_start_addr);
-#endif
-
- /* Go on to the next shared library descriptor.
- */
- addr = (CORE_ADDR) new_so->som_solib.next;
-
-
-
- /* At this point, we have essentially hooked the shlib into the
- "info share" command. However, we haven't yet loaded its
- symbol table. We must now decide whether we ought to, i.e.,
- whether doing so would exceed the symbol table size threshold.
-
- If the threshold has just now been exceeded, then we'll issue
- a warning message (which explains how to load symbols manually,
- if the user so desires).
-
- If the threshold has just now or previously been exceeded,
- we'll just add the shlib to the list of object files, but won't
- actually load its symbols. (This is more useful than it might
- sound, for it allows us to e.g., still load and use the shlibs'
- unwind information for stack tracebacks.)
- */
-
- /* Note that we DON'T want to preclude the user from using the
- add-symbol-file command! Thus, we only worry about the threshold
- when we're invoked for other reasons.
- */
- st_size = som_solib_sizeof_symbol_table (name);
- som_solib_st_size_threshold_exceeded =
- !from_tty &&
- auto_solib_limit > 0 &&
- readsyms &&
- ((st_size + som_solib_total_st_size) > (auto_solib_limit * (LONGEST) (1024 * 1024)));
-
- if (som_solib_st_size_threshold_exceeded)
- {
- if (!threshold_warning_given)
- warning (_("\
-Symbols for some libraries have not been loaded, because doing so would\n\
-exceed the size threshold specified by auto-solib-limit.\n\
-To manually load symbols, use the 'sharedlibrary' command.\n\
-To raise the threshold, set auto-solib-limit to a larger value and rerun\n\
-the program."));
- threshold_warning_given = 1;
-
- /* We'll still make note of this shlib, even if we don't
- read its symbols. This allows us to use its unwind
- information well enough to know how to e.g., correctly
- do a traceback from a PC within the shlib, even if we
- can't symbolize those PCs...
- */
- som_solib_add_solib_objfile (new_so, name, from_tty, text_addr);
- continue;
- }
-
- som_solib_total_st_size += st_size;
-
- /* This fills in new_so->objfile, among others. */
- som_solib_load_symbols (new_so, name, from_tty, text_addr, target);
- }
-
-#ifdef SOLIB_DEBUG
- printf ("--Done reading shared library data\n");
-#endif
-
- /* Getting new symbols may change our opinion about what is
- frameless. */
- reinit_frame_cache ();
- return;
-
-old_dld:
- error (_("Debugging dynamic executables loaded via the hpux8 dld.sl is not supported."));
-
-err:
- error (_("Error while reading dynamic library list."));
-}
-
-
-/* This hook gets called just before the first instruction in the
- inferior process is executed.
-
- This is our opportunity to set magic flags in the inferior so
- that GDB can be notified when a shared library is mapped in and
- to tell the dynamic linker that a private copy of the library is
- needed (so GDB can set breakpoints in the library).
-
- __dld_flags is the location of the magic flags; as of this implementation
- there are 3 flags of interest:
-
- bit 0 when set indicates that private copies of the libraries are needed
- bit 1 when set indicates that the callback hook routine is valid
- bit 2 when set indicates that the dynamic linker should maintain the
- __dld_list structure when loading/unloading libraries.
-
- Note that shared libraries are not mapped in at this time, so we have
- run the inferior until the libraries are mapped in. Typically this
- means running until the "_start" is called. */
-
-void
-som_solib_create_inferior_hook (void)
-{
- struct minimal_symbol *msymbol;
- unsigned int dld_flags, status, have_endo;
- asection *shlib_info;
- char buf[4];
- struct objfile *objfile;
- CORE_ADDR anaddr;
-
- /* First, remove all the solib event breakpoints. Their addresses
- may have changed since the last time we ran the program. */
- remove_solib_event_breakpoints ();
-
- if (symfile_objfile == NULL)
- return;
-
- /* First see if the objfile was dynamically linked. */
- shlib_info = bfd_get_section_by_name (symfile_objfile->obfd, "$SHLIB_INFO$");
- if (!shlib_info)
- return;
-
- /* It's got a $SHLIB_INFO$ section, make sure it's not empty. */
- if (bfd_section_size (symfile_objfile->obfd, shlib_info) == 0)
- return;
-
- have_endo = 0;
- /* Slam the pid of the process into __d_pid.
-
- 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
- annoyance to users of modern systems and foul up the testsuite as
- well. As a result, the warnings have been disabled. */
- msymbol = lookup_minimal_symbol ("__d_pid", NULL, symfile_objfile);
- if (msymbol == NULL)
- goto keep_going;
-
- anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
- store_unsigned_integer (buf, 4, PIDGET (inferior_ptid));
- 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"));
- goto keep_going;
- }
-
- /* 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
- events occur.
-
- 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
- function named "__d_trap" itself, but doesn't provide "_DLD_HOOK".
- We'll look first for the old flavor and then the new.
- */
- msymbol = lookup_minimal_symbol ("_DLD_HOOK", NULL, symfile_objfile);
- if (msymbol == NULL)
- 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"));
- goto keep_going;
- }
- anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
- dld_cache.hook.address = anaddr;
-
- /* Grrr, this might not be an export symbol! We have to find the
- export stub. */
- ALL_OBJFILES (objfile)
- {
- struct unwind_table_entry *u;
- struct minimal_symbol *msymbol2;
-
- /* What a crock. */
- msymbol2 = lookup_minimal_symbol_solib_trampoline (DEPRECATED_SYMBOL_NAME (msymbol),
- objfile);
- /* Found a symbol with the right name. */
- if (msymbol2)
- {
- struct unwind_table_entry *u;
- /* It must be a shared library trampoline. */
- if (SYMBOL_TYPE (msymbol2) != mst_solib_trampoline)
- continue;
-
- /* It must also be an export stub. */
- u = find_unwind_entry (SYMBOL_VALUE (msymbol2));
- if (!u || u->stub_unwind.stub_type != EXPORT)
- continue;
-
- /* OK. Looks like the correct import stub. */
- anaddr = SYMBOL_VALUE (msymbol2);
- dld_cache.hook_stub.address = anaddr;
- }
- }
- store_unsigned_integer (buf, 4, anaddr);
-
- 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"));
- goto keep_going;
- }
- anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
- status = target_write_memory (anaddr, buf, 4);
-
- /* Now set a shlib_event breakpoint at __d_trap so we can track
- significant shared library events. */
- 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"));
- goto keep_going;
- }
- create_solib_event_breakpoint (SYMBOL_VALUE_ADDRESS (msymbol));
-
- /* We have all the support usually found in end.o, so we can track
- shl_load and shl_unload calls. */
- have_endo = 1;
-
-keep_going:
-
- /* Get the address of __dld_flags, if no such symbol exists, then we can
- not debug the shared code. */
- msymbol = lookup_minimal_symbol ("__dld_flags", NULL, NULL);
- if (msymbol == NULL)
- 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."));
- dld_flags = extract_unsigned_integer (buf, 4);
-
- /* Turn on the flags we care about. */
- 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."));
-
- /* Now find the address of _start and set a breakpoint there.
- We still need this code for two reasons:
-
- * Not all sites have /opt/langtools/lib/end.o, so it's not always
- possible to track the dynamic linker's events.
-
- * At this time no events are triggered for shared libraries
- loaded at startup time (what a crock). */
-
- msymbol = lookup_minimal_symbol ("_start", NULL, symfile_objfile);
- if (msymbol == NULL)
- error (_("Unable to find _start symbol in object file."));
-
- anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
-
- /* Make the breakpoint at "_start" a shared library event breakpoint. */
- create_solib_event_breakpoint (anaddr);
-
- /* Wipe out all knowledge of old shared libraries since their
- mapping can change from one exec to another! */
- while (so_list_head)
- {
- struct so_list *temp;
-
- temp = so_list_head;
- xfree (so_list_head);
- so_list_head = temp->next;
- }
- 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.
- */
-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);
-}
-
-
-/* This function creates a breakpoint on the dynamic linker hook, which
- is called when e.g., a shl_load or shl_unload call is made. This
- breakpoint will only trigger when a shl_load call is made.
-
- If filename is NULL, then loads of any dll will be caught. Else,
- only loads of the file whose pathname is the string contained by
- filename will be caught.
-
- Undefined behaviour is guaranteed if this function is called before
- som_solib_create_inferior_hook.
- */
-void
-som_solib_create_catch_load_hook (int pid, int tempflag, char *filename,
- char *cond_string)
-{
- create_solib_load_event_breakpoint ("__d_trap", tempflag,
- filename, cond_string);
-}
-
-/* This function creates a breakpoint on the dynamic linker hook, which
- is called when e.g., a shl_load or shl_unload call is made. This
- breakpoint will only trigger when a shl_unload call is made.
-
- If filename is NULL, then unloads of any dll will be caught. Else,
- only unloads of the file whose pathname is the string contained by
- filename will be caught.
-
- Undefined behaviour is guaranteed if this function is called before
- som_solib_create_inferior_hook.
- */
-void
-som_solib_create_catch_unload_hook (int pid, int tempflag, char *filename,
- char *cond_string)
-{
- create_solib_unload_event_breakpoint ("__d_trap", tempflag,
- filename, cond_string);
-}
-
-int
-som_solib_have_load_event (int pid)
-{
- CORE_ADDR event_kind;
-
- event_kind = read_register (HPPA_ARG0_REGNUM);
- return (event_kind == SHL_LOAD);
-}
-
-int
-som_solib_have_unload_event (int pid)
-{
- CORE_ADDR event_kind;
-
- event_kind = read_register (HPPA_ARG0_REGNUM);
- return (event_kind == SHL_UNLOAD);
-}
-
-static char *
-som_solib_library_pathname (int pid)
-{
- CORE_ADDR dll_handle_address;
- CORE_ADDR dll_pathname_address;
- struct som_solib_mapped_entry dll_descriptor;
- char *p;
- static char dll_pathname[1024];
-
- /* Read the descriptor of this newly-loaded library. */
- dll_handle_address = read_register (HPPA_ARG1_REGNUM);
- read_memory (dll_handle_address, (char *) &dll_descriptor, sizeof (dll_descriptor));
-
- /* We can find a pointer to the dll's pathname within the descriptor. */
- dll_pathname_address = (CORE_ADDR) dll_descriptor.name;
-
- /* Read the pathname, one byte at a time. */
- p = dll_pathname;
- for (;;)
- {
- char b;
- read_memory (dll_pathname_address++, (char *) &b, 1);
- *p++ = b;
- if (b == '\0')
- break;
- }
-
- return dll_pathname;
-}
-
-char *
-som_solib_loaded_library_pathname (int pid)
-{
- if (!som_solib_have_load_event (pid))
- error (_("Must have a load event to use this query"));
-
- return som_solib_library_pathname (pid);
-}
-
-char *
-som_solib_unloaded_library_pathname (int pid)
-{
- if (!som_solib_have_unload_event (pid))
- error (_("Must have an unload event to use this query"));
-
- return som_solib_library_pathname (pid);
-}
-
-static void
-som_solib_desire_dynamic_linker_symbols (void)
-{
- struct objfile *objfile;
- struct unwind_table_entry *u;
- struct minimal_symbol *dld_msymbol;
-
- /* Do we already know the value of these symbols? If so, then
- we've no work to do.
-
- (If you add clauses to this test, be sure to likewise update the
- test within the loop.)
- */
- if (dld_cache.is_valid)
- return;
-
- ALL_OBJFILES (objfile)
- {
- dld_msymbol = lookup_minimal_symbol ("shl_load", NULL, objfile);
- if (dld_msymbol != NULL)
- {
- dld_cache.load.address = SYMBOL_VALUE (dld_msymbol);
- dld_cache.load.unwind = find_unwind_entry (dld_cache.load.address);
- }
-
- dld_msymbol = lookup_minimal_symbol_solib_trampoline ("shl_load",
- objfile);
- if (dld_msymbol != NULL)
- {
- if (SYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
- {
- u = find_unwind_entry (SYMBOL_VALUE (dld_msymbol));
- if ((u != NULL) && (u->stub_unwind.stub_type == EXPORT))
- {
- dld_cache.load_stub.address = SYMBOL_VALUE (dld_msymbol);
- dld_cache.load_stub.unwind = u;
- }
- }
- }
-
- dld_msymbol = lookup_minimal_symbol ("shl_unload", NULL, objfile);
- if (dld_msymbol != NULL)
- {
- dld_cache.unload.address = SYMBOL_VALUE (dld_msymbol);
- dld_cache.unload.unwind = find_unwind_entry (dld_cache.unload.address);
-
- /* ??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
- 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
- case, but since I don't seem to have any legitimate way to
- look for this thing via the symbol table...
- */
- if (dld_cache.unload.unwind != NULL)
- {
- u = find_unwind_entry (dld_cache.unload.unwind->region_end + 4);
- if (u != NULL)
- {
- dld_cache.unload2.address = u->region_start;
- dld_cache.unload2.unwind = u;
- }
- }
- }
-
- dld_msymbol = lookup_minimal_symbol_solib_trampoline ("shl_unload",
- objfile);
- if (dld_msymbol != NULL)
- {
- if (SYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
- {
- u = find_unwind_entry (SYMBOL_VALUE (dld_msymbol));
- if ((u != NULL) && (u->stub_unwind.stub_type == EXPORT))
- {
- dld_cache.unload_stub.address = SYMBOL_VALUE (dld_msymbol);
- dld_cache.unload_stub.unwind = u;
- }
- }
- }
-
- /* Did we find everything we were looking for? If so, stop. */
- if ((dld_cache.load.address != 0)
- && (dld_cache.load_stub.address != 0)
- && (dld_cache.unload.address != 0)
- && (dld_cache.unload_stub.address != 0))
- {
- dld_cache.is_valid = 1;
- break;
- }
- }
-
- dld_cache.hook.unwind = find_unwind_entry (dld_cache.hook.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
- this function is a "desire" operation, and not a "require".
- */
-}
-
-int
-som_solib_in_dynamic_linker (int pid, CORE_ADDR pc)
-{
- struct unwind_table_entry *u_pc;
-
- /* Are we in the dld itself?
-
- ??rehrauer: Large hack -- We'll assume that any address in a
- shared text region is the dld's text. This would obviously
- fall down if the user attached to a process, whose shlibs
- weren't mapped to a (writeable) private region. However, in
- that case the debugger probably isn't able to set the fundamental
- breakpoint in the dld callback anyways, so this hack should be
- safe.
- */
- if ((pc & (CORE_ADDR) 0xc0000000) == (CORE_ADDR) 0xc0000000)
- return 1;
-
- /* Cache the address of some symbols that are part of the dynamic
- linker, if not already known.
- */
- som_solib_desire_dynamic_linker_symbols ();
-
- /* Are we in the dld callback? Or its export stub? */
- u_pc = find_unwind_entry (pc);
- if (u_pc == NULL)
- return 0;
-
- if ((u_pc == dld_cache.hook.unwind) || (u_pc == dld_cache.hook_stub.unwind))
- return 1;
-
- /* Or the interface of the dld (i.e., "shl_load" or friends)? */
- if ((u_pc == dld_cache.load.unwind)
- || (u_pc == dld_cache.unload.unwind)
- || (u_pc == dld_cache.unload2.unwind)
- || (u_pc == dld_cache.load_stub.unwind)
- || (u_pc == dld_cache.unload_stub.unwind))
- return 1;
-
- /* Apparently this address isn't part of the dld's text. */
- return 0;
-}
-
-
-/* Return the GOT value for the shared library in which ADDR belongs. If
- ADDR isn't in any known shared library, return zero. */
-
-CORE_ADDR
-som_solib_get_got_by_pc (CORE_ADDR addr)
-{
- struct so_list *so_list = so_list_head;
- CORE_ADDR got_value = 0;
-
- while (so_list)
- {
- if (so_list->som_solib.text_addr <= addr
- && so_list->som_solib.text_end > addr)
- {
- got_value = so_list->som_solib.got_value;
- break;
- }
- so_list = so_list->next;
- }
- return got_value;
-}
-
-/* elz:
- 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. */
-/* this function is used in hppa_fix_call_dummy in hppa-tdep.c */
-
-CORE_ADDR
-som_solib_get_solib_by_pc (CORE_ADDR addr)
-{
- struct so_list *so_list = so_list_head;
-
- while (so_list)
- {
- if (so_list->som_solib.text_addr <= addr
- && so_list->som_solib.text_end > addr)
- {
- break;
- }
- so_list = so_list->next;
- }
- if (so_list)
- return so_list->solib_addr;
- else
- return 0;
-}
-
-
-int
-som_solib_section_offsets (struct objfile *objfile,
- struct section_offsets *offsets)
-{
- struct so_list *so_list = so_list_head;
-
- while (so_list)
- {
- /* Oh what a pain! We need the offsets before so_list->objfile
- is valid. The BFDs will never match. Make a best guess. */
- if (strstr (objfile->name, so_list->som_solib.name))
- {
- asection *private_section;
-
- /* The text offset is easy. */
- offsets->offsets[SECT_OFF_TEXT (objfile)]
- = (so_list->som_solib.text_addr
- - so_list->som_solib.text_link_addr);
- offsets->offsets[SECT_OFF_RODATA (objfile)]
- = ANOFFSET (offsets, SECT_OFF_TEXT (objfile));
-
- /* We should look at presumed_dp in the SOM header, but
- that's not easily available. This should be OK though. */
- private_section = bfd_get_section_by_name (objfile->obfd,
- "$PRIVATE$");
- if (!private_section)
- {
- warning (_("Unable to find $PRIVATE$ in shared library!"));
- offsets->offsets[SECT_OFF_DATA (objfile)] = 0;
- offsets->offsets[SECT_OFF_BSS (objfile)] = 0;
- return 1;
- }
- offsets->offsets[SECT_OFF_DATA (objfile)]
- = (so_list->som_solib.data_start - private_section->vma);
- offsets->offsets[SECT_OFF_BSS (objfile)]
- = ANOFFSET (offsets, SECT_OFF_DATA (objfile));
- return 1;
- }
- so_list = so_list->next;
- }
- return 0;
-}
-
-/* Dump information about all the currently loaded shared libraries. */
-
-static void
-som_sharedlibrary_info_command (char *ignore, int from_tty)
-{
- struct so_list *so_list = so_list_head;
-
- if (exec_bfd == NULL)
- {
- printf_unfiltered ("No executable file.\n");
- return;
- }
-
- if (so_list == NULL)
- {
- printf_unfiltered ("No shared libraries loaded at this time.\n");
- return;
- }
-
- printf_unfiltered ("Shared Object Libraries\n");
- printf_unfiltered (" %-12s%-12s%-12s%-12s%-12s%-12s\n",
- " flags", " tstart", " tend", " dstart", " dend", " dlt");
- while (so_list)
- {
- unsigned int flags;
-
- flags = so_list->som_solib.struct_version << 24;
- flags |= so_list->som_solib.bind_mode << 16;
- flags |= so_list->som_solib.library_version;
- printf_unfiltered ("%s", so_list->som_solib.name);
- if (so_list->objfile == NULL)
- printf_unfiltered (" (symbols not loaded)");
- printf_unfiltered ("\n");
- printf_unfiltered (" %-12s", hex_string_custom (flags, 8));
- printf_unfiltered ("%-12s",
- hex_string_custom (so_list->som_solib.text_addr, 8));
- printf_unfiltered ("%-12s",
- hex_string_custom (so_list->som_solib.text_end, 8));
- printf_unfiltered ("%-12s",
- hex_string_custom (so_list->som_solib.data_start, 8));
- printf_unfiltered ("%-12s",
- hex_string_custom (so_list->som_solib.data_end, 8));
- printf_unfiltered ("%-12s\n",
- hex_string_custom (so_list->som_solib.got_value, 8));
- so_list = so_list->next;
- }
-}
-
-static void
-som_solib_sharedlibrary_command (char *args, int from_tty)
-{
- dont_repeat ();
- som_solib_add (args, from_tty, (struct target_ops *) 0, 1);
-}
-
-
-
-char *
-som_solib_address (CORE_ADDR addr)
-{
- struct so_list *so = so_list_head;
-
- while (so)
- {
- /* Is this address within this shlib's text range? If so,
- return the shlib's name.
- */
- if ((addr >= so->som_solib.text_addr) && (addr <= so->som_solib.text_end))
- return so->som_solib.name;
-
- /* Nope, keep looking... */
- so = so->next;
- }
-
- /* No, we couldn't prove that the address is within a shlib. */
- return NULL;
-}
-
-
-void
-som_solib_restart (void)
-{
- struct so_list *sl = so_list_head;
-
- /* Before the shlib info vanishes, use it to disable any breakpoints
- that may still be active in those shlibs.
- */
- disable_breakpoints_in_shlibs (0);
-
- /* Discard all the shlib descriptors.
- */
- while (sl)
- {
- struct so_list *next_sl = sl->next;
- xfree (sl);
- sl = next_sl;
- }
- so_list_head = NULL;
-
- som_solib_total_st_size = (LONGEST) 0;
- som_solib_st_size_threshold_exceeded = 0;
-
- dld_cache.is_valid = 0;
-
- dld_cache.hook.address = 0;
- dld_cache.hook.unwind = NULL;
-
- dld_cache.hook_stub.address = 0;
- dld_cache.hook_stub.unwind = NULL;
-
- dld_cache.load.address = 0;
- dld_cache.load.unwind = NULL;
-
- dld_cache.load_stub.address = 0;
- dld_cache.load_stub.unwind = NULL;
-
- dld_cache.unload.address = 0;
- dld_cache.unload.unwind = NULL;
-
- dld_cache.unload2.address = 0;
- dld_cache.unload2.unwind = NULL;
-
- dld_cache.unload_stub.address = 0;
- dld_cache.unload_stub.unwind = NULL;
-}
-
-
-void
-_initialize_som_solib (void)
-{
- add_com ("sharedlibrary", class_files, som_solib_sharedlibrary_command,
- _("Load shared object library symbols for files matching REGEXP."));
- add_info ("sharedlibrary", som_sharedlibrary_info_command,
- _("Status of loaded shared object libraries."));
-
- add_setshow_boolean_cmd ("auto-solib-add", class_support,
- &auto_solib_add, _("\
-Set autoloading of shared library symbols."), _("\
-Show autoloading of shared library symbols."), _("\
-If \"on\", symbols from all shared object libraries will be loaded\n\
-automatically when the inferior begins execution, when the dynamic linker\n\
-informs gdb that a new library has been loaded, or when attaching to the\n\
-inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."),
- NULL,
- NULL, /* FIXME: i18n: */
- &setlist, &showlist);
-
- add_setshow_zinteger_cmd ("auto-solib-limit", class_support,
- &auto_solib_limit, _("\
-Set threshold (in Mb) for autoloading shared library symbols."), _("\
-Show threshold (in Mb) for autoloading shared library symbols."), _("\
-When shared library autoloading is enabled, new libraries will be loaded\n\
-only until the total size of shared library symbols exceeds this\n\
-threshold in megabytes. Is ignored when using `sharedlibrary'."),
- NULL,
- NULL, /* FIXME: i18n: */
- &setlist, &showlist);
-
- /* ??rehrauer: On HP-UX, the kernel parameter MAXDSIZ limits how
- much data space a process can use. We ought to be reading
- MAXDSIZ and setting auto_solib_limit to some large fraction of
- that value. If not that, we maybe ought to be setting it smaller
- than the default for MAXDSIZ (that being 64Mb, I believe).
- However, [1] this threshold is only crudely approximated rather
- than actually measured, and [2] 50 Mbytes is too small for
- debugging gdb itself. Thus, the arbitrary 100 figure. */
- auto_solib_limit = 100; /* Megabytes */
-
- som_solib_restart ();
-}
-
-/* Get some HPUX-specific data from a shared lib.
- */
-CORE_ADDR
-som_solib_thread_start_addr (struct so_list *so)
-{
- return so->som_solib.tsd_start_addr;
-}
-
-#ifdef PA_SOM_ONLY
-void
-no_shared_libraries (char *ignored, int from_tty)
-{
-}
-#endif
projects / binutils-gdb.git / commitdiff