/* Handle SVR4 shared libraries for GDB, the GNU Debugger.
Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000,
- 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GDB.
ptr_type) == 0;
}
-/* Per-inferior SVR4 specific data. */
+/* Per pspace SVR4 specific data. */
struct svr4_info
{
- int pid;
-
CORE_ADDR debug_base; /* Base of dynamic linker structures */
/* Validity flag for debug_loader_offset. */
/* Load map address for the main executable. */
CORE_ADDR main_lm_addr;
-};
-
-/* List of known processes using solib-svr4 shared libraries, storing
- the required bookkeeping for each. */
-typedef struct svr4_info *svr4_info_p;
-DEF_VEC_P(svr4_info_p);
-VEC(svr4_info_p) *svr4_info = NULL;
+ CORE_ADDR interp_text_sect_low;
+ CORE_ADDR interp_text_sect_high;
+ CORE_ADDR interp_plt_sect_low;
+ CORE_ADDR interp_plt_sect_high;
+};
-/* Get svr4 data for inferior PID (target id). If none is found yet,
- add it now. This function always returns a valid object. */
+/* Per-program-space data key. */
+static const struct program_space_data *solib_svr4_pspace_data;
-struct svr4_info *
-get_svr4_info (int pid)
+static void
+svr4_pspace_data_cleanup (struct program_space *pspace, void *arg)
{
- int ix;
- struct svr4_info *it;
-
- gdb_assert (pid != 0);
-
- for (ix = 0; VEC_iterate (svr4_info_p, svr4_info, ix, it); ++ix)
- {
- if (it->pid == pid)
- return it;
- }
-
- it = XZALLOC (struct svr4_info);
- it->pid = pid;
-
- VEC_safe_push (svr4_info_p, svr4_info, it);
+ struct svr4_info *info;
- return it;
+ info = program_space_data (pspace, solib_svr4_pspace_data);
+ xfree (info);
}
-/* Get rid of any svr4 related bookkeeping for inferior PID (target
- id). */
+/* Get the current svr4 data. If none is found yet, add it now. This
+ function always returns a valid object. */
-static void
-remove_svr4_info (int pid)
+static struct svr4_info *
+get_svr4_info (void)
{
- int ix;
- struct svr4_info *it;
-
- for (ix = 0; VEC_iterate (svr4_info_p, svr4_info, ix, it); ++ix)
- {
- if (it->pid == pid)
- {
- VEC_unordered_remove (svr4_info_p, svr4_info, ix);
- return;
- }
- }
-}
+ struct svr4_info *info;
-/* This is an "inferior_exit" observer. Inferior PID (target id) is
- being removed from the inferior list, because it exited, was
- killed, detached, or we just dropped the connection to the debug
- interface --- discard any solib-svr4 related bookkeeping for this
- inferior. */
+ info = program_space_data (current_program_space, solib_svr4_pspace_data);
+ if (info != NULL)
+ return info;
-static void
-solib_svr4_inferior_exit (int pid)
-{
- remove_svr4_info (pid);
+ info = XZALLOC (struct svr4_info);
+ set_program_space_data (current_program_space, solib_svr4_pspace_data, info);
+ return info;
}
/* Local function prototypes */
ptr_type);
}
+/* On Solaris systems with some versions of the dynamic linker,
+ ld.so's l_name pointer points to the SONAME in the string table
+ rather than into writable memory. So that GDB can find shared
+ libraries when loading a core file generated by gcore, ensure that
+ memory areas containing the l_name string are saved in the core
+ file. */
+
+static int
+svr4_keep_data_in_core (CORE_ADDR vaddr, unsigned long size)
+{
+ struct svr4_info *info;
+ CORE_ADDR ldsomap;
+ struct so_list *new;
+ struct cleanup *old_chain;
+ struct link_map_offsets *lmo;
+ CORE_ADDR lm_name;
+
+ info = get_svr4_info ();
+
+ info->debug_base = 0;
+ locate_base (info);
+ if (!info->debug_base)
+ return 0;
+
+ ldsomap = solib_svr4_r_ldsomap (info);
+ if (!ldsomap)
+ return 0;
+
+ lmo = svr4_fetch_link_map_offsets ();
+ new = XZALLOC (struct so_list);
+ old_chain = make_cleanup (xfree, new);
+ new->lm_info = xmalloc (sizeof (struct lm_info));
+ make_cleanup (xfree, new->lm_info);
+ new->lm_info->l_addr = (CORE_ADDR)-1;
+ new->lm_info->lm_addr = ldsomap;
+ new->lm_info->lm = xzalloc (lmo->link_map_size);
+ make_cleanup (xfree, new->lm_info->lm);
+ read_memory (ldsomap, new->lm_info->lm, lmo->link_map_size);
+ lm_name = LM_NAME (new);
+ do_cleanups (old_chain);
+
+ return (lm_name >= vaddr && lm_name < vaddr + size);
+}
+
/*
LOCAL FUNCTION
int l_name_size = TYPE_LENGTH (ptr_type);
gdb_byte *l_name_buf = xmalloc (l_name_size);
struct cleanup *cleanups = make_cleanup (xfree, l_name_buf);
- struct svr4_info *info = get_svr4_info (PIDGET (inferior_ptid));
+ struct svr4_info *info = get_svr4_info ();
if (symfile_objfile)
if (!query (_("Attempt to reload symbols from process? ")))
static struct so_list *
svr4_default_sos (void)
{
- struct inferior *inf = current_inferior ();
- struct svr4_info *info = get_svr4_info (inf->pid);
+ struct svr4_info *info = get_svr4_info ();
struct so_list *head = NULL;
struct so_list **link_ptr = &head;
struct so_list *head = 0;
struct so_list **link_ptr = &head;
CORE_ADDR ldsomap = 0;
- struct inferior *inf;
struct svr4_info *info;
- if (ptid_equal (inferior_ptid, null_ptid))
- return NULL;
-
- inf = current_inferior ();
- info = get_svr4_info (inf->pid);
+ info = get_svr4_info ();
/* Always locate the debug struct, in case it has moved. */
info->debug_base = 0;
svr4_fetch_objfile_link_map (struct objfile *objfile)
{
struct so_list *so;
- struct svr4_info *info = get_svr4_info (PIDGET (inferior_ptid));
+ struct svr4_info *info = get_svr4_info ();
/* Cause svr4_current_sos() to be run if it hasn't been already. */
if (info->main_lm_addr == 0)
/* Return 1 if PC lies in the dynamic symbol resolution code of the
SVR4 run time loader. */
-static CORE_ADDR interp_text_sect_low;
-static CORE_ADDR interp_text_sect_high;
-static CORE_ADDR interp_plt_sect_low;
-static CORE_ADDR interp_plt_sect_high;
int
svr4_in_dynsym_resolve_code (CORE_ADDR pc)
{
- return ((pc >= interp_text_sect_low && pc < interp_text_sect_high)
- || (pc >= interp_plt_sect_low && pc < interp_plt_sect_high)
+ struct svr4_info *info = get_svr4_info ();
+
+ return ((pc >= info->interp_text_sect_low
+ && pc < info->interp_text_sect_high)
+ || (pc >= info->interp_plt_sect_low
+ && pc < info->interp_plt_sect_high)
|| in_plt_section (pc, NULL));
}
*/
static int
-enable_break (struct svr4_info *info)
+enable_break (struct svr4_info *info, int from_tty)
{
struct minimal_symbol *msymbol;
char **bkpt_namep;
asection *interp_sect;
gdb_byte *interp_name;
CORE_ADDR sym_addr;
- struct inferior *inf = current_inferior ();
/* First, remove all the solib event breakpoints. Their addresses
may have changed since the last time we ran the program. */
remove_solib_event_breakpoints ();
- interp_text_sect_low = interp_text_sect_high = 0;
- interp_plt_sect_low = interp_plt_sect_high = 0;
+ info->interp_text_sect_low = info->interp_text_sect_high = 0;
+ info->interp_plt_sect_low = info->interp_plt_sect_high = 0;
/* If we already have a shared library list in the target, and
r_debug contains r_brk, set the breakpoint there - this should
mean r_brk has already been relocated. Assume the dynamic linker
is the object containing r_brk. */
- solib_add (NULL, 0, ¤t_target, auto_solib_add);
+ solib_add (NULL, from_tty, ¤t_target, auto_solib_add);
sym_addr = 0;
if (info->debug_base && solib_svr4_r_map (info) != 0)
sym_addr = solib_svr4_r_brk (info);
interp_sect = bfd_get_section_by_name (tmp_bfd, ".text");
if (interp_sect)
{
- interp_text_sect_low =
+ info->interp_text_sect_low =
bfd_section_vma (tmp_bfd, interp_sect) + load_addr;
- interp_text_sect_high =
- interp_text_sect_low + bfd_section_size (tmp_bfd, interp_sect);
+ info->interp_text_sect_high =
+ info->interp_text_sect_low
+ + bfd_section_size (tmp_bfd, interp_sect);
}
interp_sect = bfd_get_section_by_name (tmp_bfd, ".plt");
if (interp_sect)
{
- interp_plt_sect_low =
+ info->interp_plt_sect_low =
bfd_section_vma (tmp_bfd, interp_sect) + load_addr;
- interp_plt_sect_high =
- interp_plt_sect_low + bfd_section_size (tmp_bfd, interp_sect);
+ info->interp_plt_sect_high =
+ info->interp_plt_sect_low
+ + bfd_section_size (tmp_bfd, interp_sect);
}
create_solib_event_breakpoint (target_gdbarch, sym_addr);
info->debug_loader_name = xstrdup (interp_name);
info->debug_loader_offset_p = 1;
info->debug_loader_offset = load_addr;
- solib_add (NULL, 0, ¤t_target, auto_solib_add);
+ solib_add (NULL, from_tty, ¤t_target, auto_solib_add);
}
/* Record the relocated start and end address of the dynamic linker
interp_sect = bfd_get_section_by_name (tmp_bfd, ".text");
if (interp_sect)
{
- interp_text_sect_low =
+ info->interp_text_sect_low =
bfd_section_vma (tmp_bfd, interp_sect) + load_addr;
- interp_text_sect_high =
- interp_text_sect_low + bfd_section_size (tmp_bfd, interp_sect);
+ info->interp_text_sect_high =
+ info->interp_text_sect_low
+ + bfd_section_size (tmp_bfd, interp_sect);
}
interp_sect = bfd_get_section_by_name (tmp_bfd, ".plt");
if (interp_sect)
{
- interp_plt_sect_low =
+ info->interp_plt_sect_low =
bfd_section_vma (tmp_bfd, interp_sect) + load_addr;
- interp_plt_sect_high =
- interp_plt_sect_low + bfd_section_size (tmp_bfd, interp_sect);
+ info->interp_plt_sect_high =
+ info->interp_plt_sect_low
+ + bfd_section_size (tmp_bfd, interp_sect);
}
/* Now try to set a breakpoint in the dynamic linker. */
msymbol = lookup_minimal_symbol (*bkpt_namep, NULL, symfile_objfile);
if ((msymbol != NULL) && (SYMBOL_VALUE_ADDRESS (msymbol) != 0))
{
- create_solib_event_breakpoint (target_gdbarch,
- SYMBOL_VALUE_ADDRESS (msymbol));
+ sym_addr = SYMBOL_VALUE_ADDRESS (msymbol);
+ sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch,
+ sym_addr,
+ ¤t_target);
+ create_solib_event_breakpoint (target_gdbarch, sym_addr);
return 1;
}
}
msymbol = lookup_minimal_symbol (*bkpt_namep, NULL, symfile_objfile);
if ((msymbol != NULL) && (SYMBOL_VALUE_ADDRESS (msymbol) != 0))
{
- create_solib_event_breakpoint (target_gdbarch,
- SYMBOL_VALUE_ADDRESS (msymbol));
+ sym_addr = SYMBOL_VALUE_ADDRESS (msymbol);
+ sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch,
+ sym_addr,
+ ¤t_target);
+ create_solib_event_breakpoint (target_gdbarch, sym_addr);
return 1;
}
}
SYNOPSIS
- void svr4_solib_create_inferior_hook ()
+ void svr4_solib_create_inferior_hook (int from_tty)
DESCRIPTION
*/
static void
-svr4_solib_create_inferior_hook (void)
+svr4_solib_create_inferior_hook (int from_tty)
{
struct inferior *inf;
struct thread_info *tp;
struct svr4_info *info;
- info = get_svr4_info (PIDGET (inferior_ptid));
+ info = get_svr4_info ();
/* Relocate the main executable if necessary. */
svr4_relocate_main_executable ();
if (!svr4_have_link_map_offsets ())
return;
- if (!enable_break (info))
+ if (!enable_break (info, from_tty))
return;
#if defined(_SCO_DS)
static void
svr4_clear_solib (void)
{
- remove_svr4_info (PIDGET (inferior_ptid));
+ struct svr4_info *info;
+
+ info = get_svr4_info ();
+ info->debug_base = 0;
+ info->debug_loader_offset_p = 0;
+ info->debug_loader_offset = 0;
+ xfree (info->debug_loader_name);
+ info->debug_loader_name = NULL;
}
static void
_initialize_svr4_solib (void)
{
solib_svr4_data = gdbarch_data_register_pre_init (solib_svr4_init);
+ solib_svr4_pspace_data
+ = register_program_space_data_with_cleanup (svr4_pspace_data_cleanup);
svr4_so_ops.relocate_section_addresses = svr4_relocate_section_addresses;
svr4_so_ops.free_so = svr4_free_so;
svr4_so_ops.bfd_open = solib_bfd_open;
svr4_so_ops.lookup_lib_global_symbol = elf_lookup_lib_symbol;
svr4_so_ops.same = svr4_same;
-
- observer_attach_inferior_exit (solib_svr4_inferior_exit);
+ svr4_so_ops.keep_data_in_core = svr4_keep_data_in_core;
}
projects / binutils-gdb.git / blobdiff