/* Handle OSF/1, Digital UNIX, and Tru64 shared libraries
|
/* Handle OSF/1, Digital UNIX, and Tru64 shared libraries
|
for GDB, the GNU Debugger.
|
for GDB, the GNU Debugger.
|
Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2007, 2008,
|
Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2007, 2008,
|
2009, 2010 Free Software Foundation, Inc.
|
2009, 2010 Free Software Foundation, Inc.
|
|
|
This file is part of GDB.
|
This file is part of GDB.
|
|
|
This program is free software; you can redistribute it and/or modify
|
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
|
it under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 3 of the License, or
|
the Free Software Foundation; either version 3 of the License, or
|
(at your option) any later version.
|
(at your option) any later version.
|
|
|
This program is distributed in the hope that it will be useful,
|
This program is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
GNU General Public License for more details.
|
GNU General Public License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
/* When handling shared libraries, GDB has to find out the pathnames
|
/* When handling shared libraries, GDB has to find out the pathnames
|
of all shared libraries that are currently loaded (to read in their
|
of all shared libraries that are currently loaded (to read in their
|
symbols) and where the shared libraries are loaded in memory
|
symbols) and where the shared libraries are loaded in memory
|
(to relocate them properly from their prelinked addresses to the
|
(to relocate them properly from their prelinked addresses to the
|
current load address).
|
current load address).
|
|
|
Under OSF/1 there are two possibilities to get at this information:
|
Under OSF/1 there are two possibilities to get at this information:
|
|
|
1) Peek around in the runtime loader structures.
|
1) Peek around in the runtime loader structures.
|
These are not documented, and they are not defined in the system
|
These are not documented, and they are not defined in the system
|
header files. The definitions below were obtained by experimentation,
|
header files. The definitions below were obtained by experimentation,
|
but they seem stable enough.
|
but they seem stable enough.
|
|
|
2) Use the libxproc.a library, which contains the equivalent ldr_*
|
2) Use the libxproc.a library, which contains the equivalent ldr_*
|
routines. The library is documented in Tru64 5.x, but as of 5.1, it
|
routines. The library is documented in Tru64 5.x, but as of 5.1, it
|
only allows a process to examine itself. On earlier versions, it
|
only allows a process to examine itself. On earlier versions, it
|
may require that the GDB executable be dynamically linked and that
|
may require that the GDB executable be dynamically linked and that
|
NAT_CLIBS include -lxproc -Wl,-expect_unresolved,ldr_process_context
|
NAT_CLIBS include -lxproc -Wl,-expect_unresolved,ldr_process_context
|
for GDB and all applications that are using libgdb.
|
for GDB and all applications that are using libgdb.
|
|
|
We will use the peeking approach until libxproc.a works for other
|
We will use the peeking approach until libxproc.a works for other
|
processes. */
|
processes. */
|
|
|
#include "defs.h"
|
#include "defs.h"
|
|
|
#include <sys/types.h>
|
#include <sys/types.h>
|
#include <signal.h>
|
#include <signal.h>
|
#include "gdb_string.h"
|
#include "gdb_string.h"
|
|
|
#include "bfd.h"
|
#include "bfd.h"
|
#include "symtab.h"
|
#include "symtab.h"
|
#include "symfile.h"
|
#include "symfile.h"
|
#include "objfiles.h"
|
#include "objfiles.h"
|
#include "target.h"
|
#include "target.h"
|
#include "inferior.h"
|
#include "inferior.h"
|
#include "gdbthread.h"
|
#include "gdbthread.h"
|
#include "solist.h"
|
#include "solist.h"
|
#include "solib.h"
|
#include "solib.h"
|
|
|
#ifdef USE_LDR_ROUTINES
|
#ifdef USE_LDR_ROUTINES
|
# include <loader.h>
|
# include <loader.h>
|
#endif
|
#endif
|
|
|
#ifndef USE_LDR_ROUTINES
|
#ifndef USE_LDR_ROUTINES
|
/* Definition of runtime loader structures, found by experimentation. */
|
/* Definition of runtime loader structures, found by experimentation. */
|
#define RLD_CONTEXT_ADDRESS 0x3ffc0000000
|
#define RLD_CONTEXT_ADDRESS 0x3ffc0000000
|
|
|
/* Per-module information structure referenced by ldr_context_t.head. */
|
/* Per-module information structure referenced by ldr_context_t.head. */
|
|
|
typedef struct
|
typedef struct
|
{
|
{
|
CORE_ADDR next;
|
CORE_ADDR next;
|
CORE_ADDR previous;
|
CORE_ADDR previous;
|
CORE_ADDR unknown1;
|
CORE_ADDR unknown1;
|
CORE_ADDR module_name;
|
CORE_ADDR module_name;
|
CORE_ADDR modinfo_addr; /* used by next_link_map_member() to detect
|
CORE_ADDR modinfo_addr; /* used by next_link_map_member() to detect
|
the end of the shared module list */
|
the end of the shared module list */
|
long module_id;
|
long module_id;
|
CORE_ADDR unknown2;
|
CORE_ADDR unknown2;
|
CORE_ADDR unknown3;
|
CORE_ADDR unknown3;
|
long region_count;
|
long region_count;
|
CORE_ADDR regioninfo_addr;
|
CORE_ADDR regioninfo_addr;
|
}
|
}
|
ldr_module_info_t;
|
ldr_module_info_t;
|
|
|
/* Per-region structure referenced by ldr_module_info_t.regioninfo_addr. */
|
/* Per-region structure referenced by ldr_module_info_t.regioninfo_addr. */
|
|
|
typedef struct
|
typedef struct
|
{
|
{
|
long unknown1;
|
long unknown1;
|
CORE_ADDR regionname_addr;
|
CORE_ADDR regionname_addr;
|
long protection;
|
long protection;
|
CORE_ADDR vaddr;
|
CORE_ADDR vaddr;
|
CORE_ADDR mapaddr;
|
CORE_ADDR mapaddr;
|
long size;
|
long size;
|
long unknown2[5];
|
long unknown2[5];
|
}
|
}
|
ldr_region_info_t;
|
ldr_region_info_t;
|
|
|
/* Structure at RLD_CONTEXT_ADDRESS specifying the start and finish addresses
|
/* Structure at RLD_CONTEXT_ADDRESS specifying the start and finish addresses
|
of the shared module list. */
|
of the shared module list. */
|
|
|
typedef struct
|
typedef struct
|
{
|
{
|
CORE_ADDR unknown1;
|
CORE_ADDR unknown1;
|
CORE_ADDR unknown2;
|
CORE_ADDR unknown2;
|
CORE_ADDR head;
|
CORE_ADDR head;
|
CORE_ADDR tail;
|
CORE_ADDR tail;
|
}
|
}
|
ldr_context_t;
|
ldr_context_t;
|
#endif /* !USE_LDR_ROUTINES */
|
#endif /* !USE_LDR_ROUTINES */
|
|
|
/* Per-section information, stored in struct lm_info.secs. */
|
/* Per-section information, stored in struct lm_info.secs. */
|
|
|
struct lm_sec
|
struct lm_sec
|
{
|
{
|
CORE_ADDR offset; /* difference between default and actual
|
CORE_ADDR offset; /* difference between default and actual
|
virtual addresses of section .name */
|
virtual addresses of section .name */
|
CORE_ADDR nameaddr; /* address in inferior of section name */
|
CORE_ADDR nameaddr; /* address in inferior of section name */
|
const char *name; /* name of section, null if not fetched */
|
const char *name; /* name of section, null if not fetched */
|
};
|
};
|
|
|
/* Per-module information, stored in struct so_list.lm_info. */
|
/* Per-module information, stored in struct so_list.lm_info. */
|
|
|
struct lm_info
|
struct lm_info
|
{
|
{
|
int isloader; /* whether the module is /sbin/loader */
|
int isloader; /* whether the module is /sbin/loader */
|
int nsecs; /* length of .secs */
|
int nsecs; /* length of .secs */
|
struct lm_sec secs[1]; /* variable-length array of sections, sorted
|
struct lm_sec secs[1]; /* variable-length array of sections, sorted
|
by name */
|
by name */
|
};
|
};
|
|
|
/* Context for iterating through the inferior's shared module list. */
|
/* Context for iterating through the inferior's shared module list. */
|
|
|
struct read_map_ctxt
|
struct read_map_ctxt
|
{
|
{
|
#ifdef USE_LDR_ROUTINES
|
#ifdef USE_LDR_ROUTINES
|
ldr_process_t proc;
|
ldr_process_t proc;
|
ldr_module_t next;
|
ldr_module_t next;
|
#else
|
#else
|
CORE_ADDR next; /* next element in module list */
|
CORE_ADDR next; /* next element in module list */
|
CORE_ADDR tail; /* last element in module list */
|
CORE_ADDR tail; /* last element in module list */
|
#endif
|
#endif
|
};
|
};
|
|
|
/* Forward declaration for this module's autoinit function. */
|
/* Forward declaration for this module's autoinit function. */
|
|
|
extern void _initialize_osf_solib (void);
|
extern void _initialize_osf_solib (void);
|
|
|
#ifdef USE_LDR_ROUTINES
|
#ifdef USE_LDR_ROUTINES
|
# if 0
|
# if 0
|
/* This routine is intended to be called by ldr_* routines to read memory from
|
/* This routine is intended to be called by ldr_* routines to read memory from
|
the current target. Usage:
|
the current target. Usage:
|
|
|
ldr_process = ldr_core_process ();
|
ldr_process = ldr_core_process ();
|
ldr_set_core_reader (ldr_read_memory);
|
ldr_set_core_reader (ldr_read_memory);
|
ldr_xdetach (ldr_process);
|
ldr_xdetach (ldr_process);
|
ldr_xattach (ldr_process);
|
ldr_xattach (ldr_process);
|
|
|
ldr_core_process() and ldr_read_memory() are neither documented nor
|
ldr_core_process() and ldr_read_memory() are neither documented nor
|
declared in system header files. They work with OSF/1 2.x, and they might
|
declared in system header files. They work with OSF/1 2.x, and they might
|
work with later versions as well. */
|
work with later versions as well. */
|
|
|
static int
|
static int
|
ldr_read_memory (CORE_ADDR memaddr, char *myaddr, int len, int readstring)
|
ldr_read_memory (CORE_ADDR memaddr, char *myaddr, int len, int readstring)
|
{
|
{
|
int result;
|
int result;
|
char *buffer;
|
char *buffer;
|
|
|
if (readstring)
|
if (readstring)
|
{
|
{
|
target_read_string (memaddr, &buffer, len, &result);
|
target_read_string (memaddr, &buffer, len, &result);
|
if (result == 0)
|
if (result == 0)
|
strcpy (myaddr, buffer);
|
strcpy (myaddr, buffer);
|
xfree (buffer);
|
xfree (buffer);
|
}
|
}
|
else
|
else
|
result = target_read_memory (memaddr, myaddr, len);
|
result = target_read_memory (memaddr, myaddr, len);
|
|
|
if (result != 0)
|
if (result != 0)
|
result = -result;
|
result = -result;
|
return result;
|
return result;
|
}
|
}
|
# endif /* 0 */
|
# endif /* 0 */
|
#endif /* USE_LDR_ROUTINES */
|
#endif /* USE_LDR_ROUTINES */
|
|
|
/* Comparison for qsort() and bsearch(): return -1, 0, or 1 according to
|
/* Comparison for qsort() and bsearch(): return -1, 0, or 1 according to
|
whether lm_sec *P1's name is lexically less than, equal to, or greater
|
whether lm_sec *P1's name is lexically less than, equal to, or greater
|
than that of *P2. */
|
than that of *P2. */
|
|
|
static int
|
static int
|
lm_sec_cmp (const void *p1, const void *p2)
|
lm_sec_cmp (const void *p1, const void *p2)
|
{
|
{
|
const struct lm_sec *lms1 = p1, *lms2 = p2;
|
const struct lm_sec *lms1 = p1, *lms2 = p2;
|
return strcmp (lms1->name, lms2->name);
|
return strcmp (lms1->name, lms2->name);
|
}
|
}
|
|
|
/* Sort LMI->secs so that osf_relocate_section_addresses() can binary-search
|
/* Sort LMI->secs so that osf_relocate_section_addresses() can binary-search
|
it. */
|
it. */
|
|
|
static void
|
static void
|
lm_secs_sort (struct lm_info *lmi)
|
lm_secs_sort (struct lm_info *lmi)
|
{
|
{
|
qsort (lmi->secs, lmi->nsecs, sizeof *lmi->secs, lm_sec_cmp);
|
qsort (lmi->secs, lmi->nsecs, sizeof *lmi->secs, lm_sec_cmp);
|
}
|
}
|
|
|
/* Populate name fields of LMI->secs. */
|
/* Populate name fields of LMI->secs. */
|
|
|
static void
|
static void
|
fetch_sec_names (struct lm_info *lmi)
|
fetch_sec_names (struct lm_info *lmi)
|
{
|
{
|
#ifndef USE_LDR_ROUTINES
|
#ifndef USE_LDR_ROUTINES
|
int i, errcode;
|
int i, errcode;
|
struct lm_sec *lms;
|
struct lm_sec *lms;
|
char *name;
|
char *name;
|
|
|
for (i = 0; i < lmi->nsecs; i++)
|
for (i = 0; i < lmi->nsecs; i++)
|
{
|
{
|
lms = lmi->secs + i;
|
lms = lmi->secs + i;
|
target_read_string (lms->nameaddr, &name, PATH_MAX, &errcode);
|
target_read_string (lms->nameaddr, &name, PATH_MAX, &errcode);
|
if (errcode != 0)
|
if (errcode != 0)
|
{
|
{
|
warning (_("unable to read shared sec name at 0x%lx"), lms->nameaddr);
|
warning (_("unable to read shared sec name at 0x%lx"), lms->nameaddr);
|
name = xstrdup ("");
|
name = xstrdup ("");
|
}
|
}
|
lms->name = name;
|
lms->name = name;
|
}
|
}
|
lm_secs_sort (lmi);
|
lm_secs_sort (lmi);
|
#endif
|
#endif
|
}
|
}
|
|
|
/* target_so_ops callback. Adjust SEC's addresses after it's been mapped into
|
/* target_so_ops callback. Adjust SEC's addresses after it's been mapped into
|
the process. */
|
the process. */
|
|
|
static void
|
static void
|
osf_relocate_section_addresses (struct so_list *so,
|
osf_relocate_section_addresses (struct so_list *so,
|
struct target_section *sec)
|
struct target_section *sec)
|
{
|
{
|
struct lm_info *lmi;
|
struct lm_info *lmi;
|
struct lm_sec lms_key, *lms;
|
struct lm_sec lms_key, *lms;
|
|
|
/* Fetch SO's section names if we haven't done so already. */
|
/* Fetch SO's section names if we haven't done so already. */
|
lmi = so->lm_info;
|
lmi = so->lm_info;
|
if (lmi->nsecs && !lmi->secs[0].name)
|
if (lmi->nsecs && !lmi->secs[0].name)
|
fetch_sec_names (lmi);
|
fetch_sec_names (lmi);
|
|
|
/* Binary-search for offset information corresponding to SEC. */
|
/* Binary-search for offset information corresponding to SEC. */
|
lms_key.name = sec->the_bfd_section->name;
|
lms_key.name = sec->the_bfd_section->name;
|
lms = bsearch (&lms_key, lmi->secs, lmi->nsecs, sizeof *lms, lm_sec_cmp);
|
lms = bsearch (&lms_key, lmi->secs, lmi->nsecs, sizeof *lms, lm_sec_cmp);
|
if (lms)
|
if (lms)
|
{
|
{
|
sec->addr += lms->offset;
|
sec->addr += lms->offset;
|
sec->endaddr += lms->offset;
|
sec->endaddr += lms->offset;
|
}
|
}
|
}
|
}
|
|
|
/* target_so_ops callback. Free parts of SO allocated by this file. */
|
/* target_so_ops callback. Free parts of SO allocated by this file. */
|
|
|
static void
|
static void
|
osf_free_so (struct so_list *so)
|
osf_free_so (struct so_list *so)
|
{
|
{
|
int i;
|
int i;
|
const char *name;
|
const char *name;
|
|
|
for (i = 0; i < so->lm_info->nsecs; i++)
|
for (i = 0; i < so->lm_info->nsecs; i++)
|
{
|
{
|
name = so->lm_info->secs[i].name;
|
name = so->lm_info->secs[i].name;
|
if (name)
|
if (name)
|
xfree ((void *) name);
|
xfree ((void *) name);
|
}
|
}
|
xfree (so->lm_info);
|
xfree (so->lm_info);
|
}
|
}
|
|
|
/* target_so_ops callback. Discard information accumulated by this file and
|
/* target_so_ops callback. Discard information accumulated by this file and
|
not freed by osf_free_so(). */
|
not freed by osf_free_so(). */
|
|
|
static void
|
static void
|
osf_clear_solib (void)
|
osf_clear_solib (void)
|
{
|
{
|
return;
|
return;
|
}
|
}
|
|
|
/* target_so_ops callback. Prepare to handle shared libraries after the
|
/* target_so_ops callback. Prepare to handle shared libraries after the
|
inferior process has been created but before it's executed any
|
inferior process has been created but before it's executed any
|
instructions.
|
instructions.
|
|
|
For a statically bound executable, the inferior's first instruction is the
|
For a statically bound executable, the inferior's first instruction is the
|
one at "_start", or a similar text label. No further processing is needed
|
one at "_start", or a similar text label. No further processing is needed
|
in that case.
|
in that case.
|
|
|
For a dynamically bound executable, this first instruction is somewhere
|
For a dynamically bound executable, this first instruction is somewhere
|
in the rld, and the actual user executable is not yet mapped in.
|
in the rld, and the actual user executable is not yet mapped in.
|
We continue the inferior again, rld then maps in the actual user
|
We continue the inferior again, rld then maps in the actual user
|
executable and any needed shared libraries and then sends
|
executable and any needed shared libraries and then sends
|
itself a SIGTRAP.
|
itself a SIGTRAP.
|
|
|
At that point we discover the names of all shared libraries and
|
At that point we discover the names of all shared libraries and
|
read their symbols in.
|
read their symbols in.
|
|
|
FIXME
|
FIXME
|
|
|
This code does not properly handle hitting breakpoints which the
|
This code does not properly handle hitting breakpoints which the
|
user might have set in the rld itself. Proper handling would have
|
user might have set in the rld itself. Proper handling would have
|
to check if the SIGTRAP happened due to a kill call.
|
to check if the SIGTRAP happened due to a kill call.
|
|
|
Also, what if child has exit()ed? Must exit loop somehow. */
|
Also, what if child has exit()ed? Must exit loop somehow. */
|
|
|
static void
|
static void
|
osf_solib_create_inferior_hook (int from_tty)
|
osf_solib_create_inferior_hook (int from_tty)
|
{
|
{
|
struct inferior *inf;
|
struct inferior *inf;
|
struct thread_info *tp;
|
struct thread_info *tp;
|
|
|
inf = current_inferior ();
|
inf = current_inferior ();
|
|
|
/* If we are attaching to the inferior, the shared libraries
|
/* If we are attaching to the inferior, the shared libraries
|
have already been mapped, so nothing more to do. */
|
have already been mapped, so nothing more to do. */
|
if (inf->attach_flag)
|
if (inf->attach_flag)
|
return;
|
return;
|
|
|
/* Nothing to do for statically bound executables. */
|
/* Nothing to do for statically bound executables. */
|
|
|
if (symfile_objfile == NULL
|
if (symfile_objfile == NULL
|
|| symfile_objfile->obfd == NULL
|
|| symfile_objfile->obfd == NULL
|
|| ((bfd_get_file_flags (symfile_objfile->obfd) & DYNAMIC) == 0))
|
|| ((bfd_get_file_flags (symfile_objfile->obfd) & DYNAMIC) == 0))
|
return;
|
return;
|
|
|
/* Now run the target. It will eventually get a SIGTRAP, at
|
/* Now run the target. It will eventually get a SIGTRAP, at
|
which point all of the libraries will have been mapped in and we
|
which point all of the libraries will have been mapped in and we
|
can go groveling around in the rld structures to find
|
can go groveling around in the rld structures to find
|
out what we need to know about them.
|
out what we need to know about them.
|
|
|
If debugging from a core file, we cannot resume the execution
|
If debugging from a core file, we cannot resume the execution
|
of the inferior. But this is actually not an issue, because
|
of the inferior. But this is actually not an issue, because
|
shared libraries have already been mapped anyways, which means
|
shared libraries have already been mapped anyways, which means
|
we have nothing more to do. */
|
we have nothing more to do. */
|
if (!target_can_run (¤t_target))
|
if (!target_can_run (¤t_target))
|
return;
|
return;
|
|
|
tp = inferior_thread ();
|
tp = inferior_thread ();
|
clear_proceed_status ();
|
clear_proceed_status ();
|
inf->stop_soon = STOP_QUIETLY;
|
inf->stop_soon = STOP_QUIETLY;
|
tp->stop_signal = TARGET_SIGNAL_0;
|
tp->stop_signal = TARGET_SIGNAL_0;
|
do
|
do
|
{
|
{
|
target_resume (minus_one_ptid, 0, tp->stop_signal);
|
target_resume (minus_one_ptid, 0, tp->stop_signal);
|
wait_for_inferior (0);
|
wait_for_inferior (0);
|
}
|
}
|
while (tp->stop_signal != TARGET_SIGNAL_TRAP);
|
while (tp->stop_signal != TARGET_SIGNAL_TRAP);
|
|
|
/* solib_add will call reinit_frame_cache.
|
/* solib_add will call reinit_frame_cache.
|
But we are stopped in the runtime loader and we do not have symbols
|
But we are stopped in the runtime loader and we do not have symbols
|
for the runtime loader. So heuristic_proc_start will be called
|
for the runtime loader. So heuristic_proc_start will be called
|
and will put out an annoying warning.
|
and will put out an annoying warning.
|
Delaying the resetting of stop_soon until after symbol loading
|
Delaying the resetting of stop_soon until after symbol loading
|
suppresses the warning. */
|
suppresses the warning. */
|
solib_add ((char *) 0, 0, (struct target_ops *) 0, auto_solib_add);
|
solib_add ((char *) 0, 0, (struct target_ops *) 0, auto_solib_add);
|
inf->stop_soon = NO_STOP_QUIETLY;
|
inf->stop_soon = NO_STOP_QUIETLY;
|
}
|
}
|
|
|
/* target_so_ops callback. Do additional symbol handling, lookup, etc. after
|
/* target_so_ops callback. Do additional symbol handling, lookup, etc. after
|
symbols for a shared object have been loaded. */
|
symbols for a shared object have been loaded. */
|
|
|
static void
|
static void
|
osf_special_symbol_handling (void)
|
osf_special_symbol_handling (void)
|
{
|
{
|
return;
|
return;
|
}
|
}
|
|
|
/* Initialize CTXT in preparation for iterating through the inferior's module
|
/* Initialize CTXT in preparation for iterating through the inferior's module
|
list using read_map(). Return success. */
|
list using read_map(). Return success. */
|
|
|
static int
|
static int
|
open_map (struct read_map_ctxt *ctxt)
|
open_map (struct read_map_ctxt *ctxt)
|
{
|
{
|
#ifdef USE_LDR_ROUTINES
|
#ifdef USE_LDR_ROUTINES
|
/* Note: As originally written, ldr_my_process() was used to obtain
|
/* Note: As originally written, ldr_my_process() was used to obtain
|
the value for ctxt->proc. This is incorrect, however, since
|
the value for ctxt->proc. This is incorrect, however, since
|
ldr_my_process() retrieves the "unique identifier" associated
|
ldr_my_process() retrieves the "unique identifier" associated
|
with the current process (i.e. GDB) and not the one being
|
with the current process (i.e. GDB) and not the one being
|
debugged. Presumably, the pid of the process being debugged is
|
debugged. Presumably, the pid of the process being debugged is
|
compatible with the "unique identifier" used by the ldr_
|
compatible with the "unique identifier" used by the ldr_
|
routines, so we use that. */
|
routines, so we use that. */
|
ctxt->proc = ptid_get_pid (inferior_ptid);
|
ctxt->proc = ptid_get_pid (inferior_ptid);
|
if (ldr_xattach (ctxt->proc) != 0)
|
if (ldr_xattach (ctxt->proc) != 0)
|
return 0;
|
return 0;
|
ctxt->next = LDR_NULL_MODULE;
|
ctxt->next = LDR_NULL_MODULE;
|
#else
|
#else
|
CORE_ADDR ldr_context_addr, prev, next;
|
CORE_ADDR ldr_context_addr, prev, next;
|
ldr_context_t ldr_context;
|
ldr_context_t ldr_context;
|
|
|
if (target_read_memory ((CORE_ADDR) RLD_CONTEXT_ADDRESS,
|
if (target_read_memory ((CORE_ADDR) RLD_CONTEXT_ADDRESS,
|
(char *) &ldr_context_addr,
|
(char *) &ldr_context_addr,
|
sizeof (CORE_ADDR)) != 0)
|
sizeof (CORE_ADDR)) != 0)
|
return 0;
|
return 0;
|
if (target_read_memory (ldr_context_addr,
|
if (target_read_memory (ldr_context_addr,
|
(char *) &ldr_context,
|
(char *) &ldr_context,
|
sizeof (ldr_context_t)) != 0)
|
sizeof (ldr_context_t)) != 0)
|
return 0;
|
return 0;
|
ctxt->next = ldr_context.head;
|
ctxt->next = ldr_context.head;
|
ctxt->tail = ldr_context.tail;
|
ctxt->tail = ldr_context.tail;
|
#endif
|
#endif
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* Initialize SO to have module NAME, /sbin/loader indicator ISLOADR, and
|
/* Initialize SO to have module NAME, /sbin/loader indicator ISLOADR, and
|
space for NSECS sections. */
|
space for NSECS sections. */
|
|
|
static void
|
static void
|
init_so (struct so_list *so, char *name, int isloader, int nsecs)
|
init_so (struct so_list *so, char *name, int isloader, int nsecs)
|
{
|
{
|
int namelen, i;
|
int namelen, i;
|
|
|
/* solib.c requires various fields to be initialized to 0. */
|
/* solib.c requires various fields to be initialized to 0. */
|
memset (so, 0, sizeof *so);
|
memset (so, 0, sizeof *so);
|
|
|
/* Copy the name. */
|
/* Copy the name. */
|
namelen = strlen (name);
|
namelen = strlen (name);
|
if (namelen >= SO_NAME_MAX_PATH_SIZE)
|
if (namelen >= SO_NAME_MAX_PATH_SIZE)
|
namelen = SO_NAME_MAX_PATH_SIZE - 1;
|
namelen = SO_NAME_MAX_PATH_SIZE - 1;
|
|
|
memcpy (so->so_original_name, name, namelen);
|
memcpy (so->so_original_name, name, namelen);
|
so->so_original_name[namelen] = '\0';
|
so->so_original_name[namelen] = '\0';
|
memcpy (so->so_name, so->so_original_name, namelen + 1);
|
memcpy (so->so_name, so->so_original_name, namelen + 1);
|
|
|
/* Allocate section space. */
|
/* Allocate section space. */
|
so->lm_info = xmalloc (sizeof (struct lm_info)
|
so->lm_info = xmalloc (sizeof (struct lm_info)
|
+ (nsecs - 1) * sizeof (struct lm_sec));
|
+ (nsecs - 1) * sizeof (struct lm_sec));
|
so->lm_info->isloader = isloader;
|
so->lm_info->isloader = isloader;
|
so->lm_info->nsecs = nsecs;
|
so->lm_info->nsecs = nsecs;
|
for (i = 0; i < nsecs; i++)
|
for (i = 0; i < nsecs; i++)
|
so->lm_info->secs[i].name = NULL;
|
so->lm_info->secs[i].name = NULL;
|
}
|
}
|
|
|
/* Initialize SO's section SECIDX with name address NAMEADDR, name string
|
/* Initialize SO's section SECIDX with name address NAMEADDR, name string
|
NAME, default virtual address VADDR, and actual virtual address
|
NAME, default virtual address VADDR, and actual virtual address
|
MAPADDR. */
|
MAPADDR. */
|
|
|
static void
|
static void
|
init_sec (struct so_list *so, int secidx, CORE_ADDR nameaddr,
|
init_sec (struct so_list *so, int secidx, CORE_ADDR nameaddr,
|
const char *name, CORE_ADDR vaddr, CORE_ADDR mapaddr)
|
const char *name, CORE_ADDR vaddr, CORE_ADDR mapaddr)
|
{
|
{
|
struct lm_sec *lms;
|
struct lm_sec *lms;
|
|
|
lms = so->lm_info->secs + secidx;
|
lms = so->lm_info->secs + secidx;
|
lms->nameaddr = nameaddr;
|
lms->nameaddr = nameaddr;
|
lms->name = name;
|
lms->name = name;
|
lms->offset = mapaddr - vaddr;
|
lms->offset = mapaddr - vaddr;
|
}
|
}
|
|
|
/* If there are more elements starting at CTXT in inferior's module list,
|
/* If there are more elements starting at CTXT in inferior's module list,
|
store the next element in SO, advance CTXT to the next element, and return
|
store the next element in SO, advance CTXT to the next element, and return
|
1, else return 0. */
|
1, else return 0. */
|
|
|
static int
|
static int
|
read_map (struct read_map_ctxt *ctxt, struct so_list *so)
|
read_map (struct read_map_ctxt *ctxt, struct so_list *so)
|
{
|
{
|
ldr_module_info_t minf;
|
ldr_module_info_t minf;
|
ldr_region_info_t rinf;
|
ldr_region_info_t rinf;
|
|
|
#ifdef USE_LDR_ROUTINES
|
#ifdef USE_LDR_ROUTINES
|
size_t size;
|
size_t size;
|
ldr_region_t i;
|
ldr_region_t i;
|
|
|
/* Retrieve the next element. */
|
/* Retrieve the next element. */
|
if (ldr_next_module (ctxt->proc, &ctxt->next) != 0)
|
if (ldr_next_module (ctxt->proc, &ctxt->next) != 0)
|
return 0;
|
return 0;
|
if (ctxt->next == LDR_NULL_MODULE)
|
if (ctxt->next == LDR_NULL_MODULE)
|
return 0;
|
return 0;
|
if (ldr_inq_module (ctxt->proc, ctxt->next, &minf, sizeof minf, &size) != 0)
|
if (ldr_inq_module (ctxt->proc, ctxt->next, &minf, sizeof minf, &size) != 0)
|
return 0;
|
return 0;
|
|
|
/* Initialize the module name and section count. */
|
/* Initialize the module name and section count. */
|
init_so (so, minf.lmi_name, 0, minf.lmi_nregion);
|
init_so (so, minf.lmi_name, 0, minf.lmi_nregion);
|
|
|
/* Retrieve section names and offsets. */
|
/* Retrieve section names and offsets. */
|
for (i = 0; i < minf.lmi_nregion; i++)
|
for (i = 0; i < minf.lmi_nregion; i++)
|
{
|
{
|
if (ldr_inq_region (ctxt->proc, ctxt->next, i, &rinf,
|
if (ldr_inq_region (ctxt->proc, ctxt->next, i, &rinf,
|
sizeof rinf, &size) != 0)
|
sizeof rinf, &size) != 0)
|
goto err;
|
goto err;
|
init_sec (so, (int) i, 0, xstrdup (rinf.lri_name),
|
init_sec (so, (int) i, 0, xstrdup (rinf.lri_name),
|
(CORE_ADDR) rinf.lri_vaddr, (CORE_ADDR) rinf.lri_mapaddr);
|
(CORE_ADDR) rinf.lri_vaddr, (CORE_ADDR) rinf.lri_mapaddr);
|
}
|
}
|
lm_secs_sort (so->lm_info);
|
lm_secs_sort (so->lm_info);
|
#else
|
#else
|
char *name;
|
char *name;
|
int errcode, i;
|
int errcode, i;
|
|
|
/* Retrieve the next element. */
|
/* Retrieve the next element. */
|
if (!ctxt->next)
|
if (!ctxt->next)
|
return 0;
|
return 0;
|
if (target_read_memory (ctxt->next, (char *) &minf, sizeof minf) != 0)
|
if (target_read_memory (ctxt->next, (char *) &minf, sizeof minf) != 0)
|
return 0;
|
return 0;
|
if (ctxt->next == ctxt->tail)
|
if (ctxt->next == ctxt->tail)
|
ctxt->next = 0;
|
ctxt->next = 0;
|
else
|
else
|
ctxt->next = minf.next;
|
ctxt->next = minf.next;
|
|
|
/* Initialize the module name and section count. */
|
/* Initialize the module name and section count. */
|
target_read_string (minf.module_name, &name, PATH_MAX, &errcode);
|
target_read_string (minf.module_name, &name, PATH_MAX, &errcode);
|
if (errcode != 0)
|
if (errcode != 0)
|
return 0;
|
return 0;
|
init_so (so, name, !minf.modinfo_addr, minf.region_count);
|
init_so (so, name, !minf.modinfo_addr, minf.region_count);
|
xfree (name);
|
xfree (name);
|
|
|
/* Retrieve section names and offsets. */
|
/* Retrieve section names and offsets. */
|
for (i = 0; i < minf.region_count; i++)
|
for (i = 0; i < minf.region_count; i++)
|
{
|
{
|
if (target_read_memory (minf.regioninfo_addr + i * sizeof rinf,
|
if (target_read_memory (minf.regioninfo_addr + i * sizeof rinf,
|
(char *) &rinf, sizeof rinf) != 0)
|
(char *) &rinf, sizeof rinf) != 0)
|
goto err;
|
goto err;
|
init_sec (so, i, rinf.regionname_addr, NULL, rinf.vaddr, rinf.mapaddr);
|
init_sec (so, i, rinf.regionname_addr, NULL, rinf.vaddr, rinf.mapaddr);
|
}
|
}
|
#endif /* !USE_LDR_ROUTINES */
|
#endif /* !USE_LDR_ROUTINES */
|
return 1;
|
return 1;
|
|
|
err:
|
err:
|
osf_free_so (so);
|
osf_free_so (so);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Free resources allocated by open_map (CTXT). */
|
/* Free resources allocated by open_map (CTXT). */
|
|
|
static void
|
static void
|
close_map (struct read_map_ctxt *ctxt)
|
close_map (struct read_map_ctxt *ctxt)
|
{
|
{
|
#ifdef USE_LDR_ROUTINES
|
#ifdef USE_LDR_ROUTINES
|
ldr_xdetach (ctxt->proc);
|
ldr_xdetach (ctxt->proc);
|
#endif
|
#endif
|
}
|
}
|
|
|
/* target_so_ops callback. Return a list of shared objects currently loaded
|
/* target_so_ops callback. Return a list of shared objects currently loaded
|
in the inferior. */
|
in the inferior. */
|
|
|
static struct so_list *
|
static struct so_list *
|
osf_current_sos (void)
|
osf_current_sos (void)
|
{
|
{
|
struct so_list *head = NULL, *tail = NULL, *newtail, so;
|
struct so_list *head = NULL, *tail = NULL, *newtail, so;
|
struct read_map_ctxt ctxt;
|
struct read_map_ctxt ctxt;
|
int skipped_main;
|
int skipped_main;
|
|
|
if (!open_map (&ctxt))
|
if (!open_map (&ctxt))
|
return NULL;
|
return NULL;
|
|
|
/* Read subsequent elements. */
|
/* Read subsequent elements. */
|
for (skipped_main = 0;;)
|
for (skipped_main = 0;;)
|
{
|
{
|
if (!read_map (&ctxt, &so))
|
if (!read_map (&ctxt, &so))
|
break;
|
break;
|
|
|
/* Skip the main program module, which is first in the list after
|
/* Skip the main program module, which is first in the list after
|
/sbin/loader. */
|
/sbin/loader. */
|
if (!so.lm_info->isloader && !skipped_main)
|
if (!so.lm_info->isloader && !skipped_main)
|
{
|
{
|
osf_free_so (&so);
|
osf_free_so (&so);
|
skipped_main = 1;
|
skipped_main = 1;
|
continue;
|
continue;
|
}
|
}
|
|
|
newtail = xmalloc (sizeof *newtail);
|
newtail = xmalloc (sizeof *newtail);
|
if (!head)
|
if (!head)
|
head = newtail;
|
head = newtail;
|
else
|
else
|
tail->next = newtail;
|
tail->next = newtail;
|
tail = newtail;
|
tail = newtail;
|
|
|
memcpy (tail, &so, sizeof so);
|
memcpy (tail, &so, sizeof so);
|
tail->next = NULL;
|
tail->next = NULL;
|
}
|
}
|
|
|
close_map (&ctxt);
|
close_map (&ctxt);
|
return head;
|
return head;
|
}
|
}
|
|
|
/* target_so_ops callback. Attempt to locate and open the main symbol
|
/* target_so_ops callback. Attempt to locate and open the main symbol
|
file. */
|
file. */
|
|
|
static int
|
static int
|
osf_open_symbol_file_object (void *from_ttyp)
|
osf_open_symbol_file_object (void *from_ttyp)
|
{
|
{
|
struct read_map_ctxt ctxt;
|
struct read_map_ctxt ctxt;
|
struct so_list so;
|
struct so_list so;
|
int found;
|
int found;
|
|
|
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;
|
|
|
/* The first module after /sbin/loader is the main program. */
|
/* The first module after /sbin/loader is the main program. */
|
if (!open_map (&ctxt))
|
if (!open_map (&ctxt))
|
return 0;
|
return 0;
|
for (found = 0; !found;)
|
for (found = 0; !found;)
|
{
|
{
|
if (!read_map (&ctxt, &so))
|
if (!read_map (&ctxt, &so))
|
break;
|
break;
|
found = !so.lm_info->isloader;
|
found = !so.lm_info->isloader;
|
osf_free_so (&so);
|
osf_free_so (&so);
|
}
|
}
|
close_map (&ctxt);
|
close_map (&ctxt);
|
|
|
if (found)
|
if (found)
|
symbol_file_add_main (so.so_name, *(int *) from_ttyp);
|
symbol_file_add_main (so.so_name, *(int *) from_ttyp);
|
return found;
|
return found;
|
}
|
}
|
|
|
/* target_so_ops callback. Return whether PC is in the dynamic linker. */
|
/* target_so_ops callback. Return whether PC is in the dynamic linker. */
|
|
|
static int
|
static int
|
osf_in_dynsym_resolve_code (CORE_ADDR pc)
|
osf_in_dynsym_resolve_code (CORE_ADDR pc)
|
{
|
{
|
/* This function currently always return False. This is a temporary
|
/* This function currently always return False. This is a temporary
|
solution which only consequence is to introduce a minor incovenience
|
solution which only consequence is to introduce a minor incovenience
|
for the user: When stepping inside a subprogram located in a shared
|
for the user: When stepping inside a subprogram located in a shared
|
library, gdb might stop inside the dynamic loader code instead of
|
library, gdb might stop inside the dynamic loader code instead of
|
inside the subprogram itself. See the explanations in infrun.c about
|
inside the subprogram itself. See the explanations in infrun.c about
|
the in_solib_dynsym_resolve_code() function for more details. */
|
the in_solib_dynsym_resolve_code() function for more details. */
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static struct target_so_ops osf_so_ops;
|
static struct target_so_ops osf_so_ops;
|
|
|
void
|
void
|
_initialize_osf_solib (void)
|
_initialize_osf_solib (void)
|
{
|
{
|
osf_so_ops.relocate_section_addresses = osf_relocate_section_addresses;
|
osf_so_ops.relocate_section_addresses = osf_relocate_section_addresses;
|
osf_so_ops.free_so = osf_free_so;
|
osf_so_ops.free_so = osf_free_so;
|
osf_so_ops.clear_solib = osf_clear_solib;
|
osf_so_ops.clear_solib = osf_clear_solib;
|
osf_so_ops.solib_create_inferior_hook = osf_solib_create_inferior_hook;
|
osf_so_ops.solib_create_inferior_hook = osf_solib_create_inferior_hook;
|
osf_so_ops.special_symbol_handling = osf_special_symbol_handling;
|
osf_so_ops.special_symbol_handling = osf_special_symbol_handling;
|
osf_so_ops.current_sos = osf_current_sos;
|
osf_so_ops.current_sos = osf_current_sos;
|
osf_so_ops.open_symbol_file_object = osf_open_symbol_file_object;
|
osf_so_ops.open_symbol_file_object = osf_open_symbol_file_object;
|
osf_so_ops.in_dynsym_resolve_code = osf_in_dynsym_resolve_code;
|
osf_so_ops.in_dynsym_resolve_code = osf_in_dynsym_resolve_code;
|
osf_so_ops.bfd_open = solib_bfd_open;
|
osf_so_ops.bfd_open = solib_bfd_open;
|
|
|
/* FIXME: Don't do this here. *_gdbarch_init() should set so_ops. */
|
/* FIXME: Don't do this here. *_gdbarch_init() should set so_ops. */
|
current_target_so_ops = &osf_so_ops;
|
current_target_so_ops = &osf_so_ops;
|
}
|
}
|
|
|
