X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=gdb%2Flinux-thread-db.c;h=ff5f2cc7629ee2c75dbf5aa437f9dbbbeecbd6b5;hb=e609377629a12f6518eaf100c1983e23c80fecc1;hp=692d5746ac797d948a9f0531583754431179b50a;hpb=ecd75fc8eed3bde86036141228074a20e55dcfc9;p=platform%2Fupstream%2Fbinutils.git
diff --git a/gdb/linux-thread-db.c b/gdb/linux-thread-db.c
index 692d574..ff5f2cc 100644
--- a/gdb/linux-thread-db.c
+++ b/gdb/linux-thread-db.c
@@ -18,18 +18,16 @@
along with this program. If not, see . */
#include "defs.h"
-
-#include "gdb_assert.h"
#include
#include "gdb_proc_service.h"
-#include "gdb_thread_db.h"
+#include "nat/gdb_thread_db.h"
#include "gdb_vecs.h"
#include "bfd.h"
#include "command.h"
-#include "exceptions.h"
#include "gdbcmd.h"
#include "gdbthread.h"
#include "inferior.h"
+#include "infrun.h"
#include "symfile.h"
#include "objfiles.h"
#include "target.h"
@@ -39,8 +37,8 @@
#include "gdbcore.h"
#include "observer.h"
#include "linux-nat.h"
-#include "linux-procfs.h"
-#include "linux-osdata.h"
+#include "nat/linux-procfs.h"
+#include "nat/linux-osdata.h"
#include "auto-load.h"
#include "cli/cli-utils.h"
@@ -196,6 +194,9 @@ struct thread_db_info
td_err_e (*td_thr_tls_get_addr_p) (const td_thrhandle_t *th,
psaddr_t map_address,
size_t offset, psaddr_t *address);
+ td_err_e (*td_thr_tlsbase_p) (const td_thrhandle_t *th,
+ unsigned long int modid,
+ psaddr_t *base);
};
/* List of known processes using thread_db, and the required
@@ -565,16 +566,16 @@ enable_thread_event (int event, CORE_ADDR *bp)
static int
inferior_has_bug (const char *ver_symbol, int ver_major_min, int ver_minor_min)
{
- struct minimal_symbol *version_msym;
+ struct bound_minimal_symbol version_msym;
CORE_ADDR version_addr;
char *version;
int err, got, retval = 0;
version_msym = lookup_minimal_symbol (ver_symbol, NULL, NULL);
- if (version_msym == NULL)
+ if (version_msym.minsym == NULL)
return 0;
- version_addr = SYMBOL_VALUE_ADDRESS (version_msym);
+ version_addr = BMSYMBOL_VALUE_ADDRESS (version_msym);
got = target_read_string (version_addr, &version, 32, &err);
if (err == 0 && memchr (version, 0, got) == &version[got -1])
{
@@ -799,6 +800,7 @@ try_thread_db_load_1 (struct thread_db_info *info)
info->td_ta_event_getmsg_p = dlsym (info->handle, "td_ta_event_getmsg");
info->td_thr_event_enable_p = dlsym (info->handle, "td_thr_event_enable");
info->td_thr_tls_get_addr_p = dlsym (info->handle, "td_thr_tls_get_addr");
+ info->td_thr_tlsbase_p = dlsym (info->handle, "td_thr_tlsbase");
if (thread_db_find_new_threads_silently (inferior_ptid) != 0)
{
@@ -838,7 +840,7 @@ try_thread_db_load_1 (struct thread_db_info *info)
relative, or just LIBTHREAD_DB. */
static int
-try_thread_db_load (const char *library)
+try_thread_db_load (const char *library, int check_auto_load_safe)
{
void *handle;
struct thread_db_info *info;
@@ -846,6 +848,25 @@ try_thread_db_load (const char *library)
if (libthread_db_debug)
printf_unfiltered (_("Trying host libthread_db library: %s.\n"),
library);
+
+ if (check_auto_load_safe)
+ {
+ if (access (library, R_OK) != 0)
+ {
+ /* Do not print warnings by file_is_auto_load_safe if the library does
+ not exist at this place. */
+ if (libthread_db_debug)
+ printf_unfiltered (_("open failed: %s.\n"), safe_strerror (errno));
+ return 0;
+ }
+
+ if (!file_is_auto_load_safe (library, _("auto-load: Loading libthread-db "
+ "library \"%s\" from explicit "
+ "directory.\n"),
+ library))
+ return 0;
+ }
+
handle = dlopen (library, RTLD_NOW);
if (handle == NULL)
{
@@ -919,12 +940,7 @@ try_thread_db_load_from_pdir_1 (struct objfile *obj, const char *subdir)
}
strcat (cp, LIBTHREAD_DB_SO);
- if (!file_is_auto_load_safe (path, _("auto-load: Loading libthread-db "
- "library \"%s\" from $pdir.\n"),
- path))
- result = 0;
- else
- result = try_thread_db_load (path);
+ result = try_thread_db_load (path, 1);
do_cleanups (cleanup);
return result;
@@ -970,7 +986,7 @@ try_thread_db_load_from_pdir (const char *subdir)
static int
try_thread_db_load_from_sdir (void)
{
- return try_thread_db_load (LIBTHREAD_DB_SO);
+ return try_thread_db_load (LIBTHREAD_DB_SO, 0);
}
/* Try to load libthread_db from directory DIR of length DIR_LEN.
@@ -993,13 +1009,7 @@ try_thread_db_load_from_dir (const char *dir, size_t dir_len)
path[dir_len] = '/';
strcpy (path + dir_len + 1, LIBTHREAD_DB_SO);
- if (!file_is_auto_load_safe (path, _("auto-load: Loading libthread-db "
- "library \"%s\" from explicit "
- "directory.\n"),
- path))
- result = 0;
- else
- result = try_thread_db_load (path);
+ result = try_thread_db_load (path, 1);
do_cleanups (cleanup);
return result;
@@ -1394,7 +1404,7 @@ check_event (ptid_t ptid)
/* Bail out early if we're not at a thread event breakpoint. */
stop_pc = regcache_read_pc (regcache)
- - gdbarch_decr_pc_after_break (gdbarch);
+ - target_decr_pc_after_break (gdbarch);
if (stop_pc != info->td_create_bp_addr
&& stop_pc != info->td_death_bp_addr)
return;
@@ -1754,17 +1764,15 @@ thread_db_pid_to_str (struct target_ops *ops, ptid_t ptid)
}
beneath = find_target_beneath (ops);
- if (beneath->to_pid_to_str (beneath, ptid))
- return beneath->to_pid_to_str (beneath, ptid);
-
- return normal_pid_to_str (ptid);
+ return beneath->to_pid_to_str (beneath, ptid);
}
/* Return a string describing the state of the thread specified by
INFO. */
static char *
-thread_db_extra_thread_info (struct thread_info *info)
+thread_db_extra_thread_info (struct target_ops *self,
+ struct thread_info *info)
{
if (info->private == NULL)
return NULL;
@@ -1802,21 +1810,39 @@ thread_db_get_thread_local_address (struct target_ops *ops,
info = get_thread_db_info (ptid_get_pid (ptid));
- /* glibc doesn't provide the needed interface. */
- if (!info->td_thr_tls_get_addr_p)
- throw_error (TLS_NO_LIBRARY_SUPPORT_ERROR,
- _("No TLS library support"));
-
- /* Caller should have verified that lm != 0. */
- gdb_assert (lm != 0);
-
/* Finally, get the address of the variable. */
- /* Note the cast through uintptr_t: this interface only works if
- a target address fits in a psaddr_t, which is a host pointer.
- So a 32-bit debugger can not access 64-bit TLS through this. */
- err = info->td_thr_tls_get_addr_p (&thread_info->private->th,
- (psaddr_t)(uintptr_t) lm,
- offset, &address);
+ if (lm != 0)
+ {
+ /* glibc doesn't provide the needed interface. */
+ if (!info->td_thr_tls_get_addr_p)
+ throw_error (TLS_NO_LIBRARY_SUPPORT_ERROR,
+ _("No TLS library support"));
+
+ /* Note the cast through uintptr_t: this interface only works if
+ a target address fits in a psaddr_t, which is a host pointer.
+ So a 32-bit debugger can not access 64-bit TLS through this. */
+ err = info->td_thr_tls_get_addr_p (&thread_info->private->th,
+ (psaddr_t)(uintptr_t) lm,
+ offset, &address);
+ }
+ else
+ {
+ /* If glibc doesn't provide the needed interface throw an error
+ that LM is zero - normally cases it should not be. */
+ if (!info->td_thr_tlsbase_p)
+ throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR,
+ _("TLS load module not found"));
+
+ /* This code path handles the case of -static -pthread executables:
+ https://sourceware.org/ml/libc-help/2014-03/msg00024.html
+ For older GNU libc r_debug.r_map is NULL. For GNU libc after
+ PR libc/16831 due to GDB PR threads/16954 LOAD_MODULE is also NULL.
+ The constant number 1 depends on GNU __libc_setup_tls
+ initialization of l_tls_modid to 1. */
+ err = info->td_thr_tlsbase_p (&thread_info->private->th,
+ 1, &address);
+ address = (char *) address + offset;
+ }
#ifdef THREAD_DB_HAS_TD_NOTALLOC
/* The memory hasn't been allocated, yet. */
@@ -1842,11 +1868,7 @@ thread_db_get_thread_local_address (struct target_ops *ops,
}
beneath = find_target_beneath (ops);
- if (beneath->to_get_thread_local_address)
- return beneath->to_get_thread_local_address (beneath, ptid, lm, offset);
- else
- throw_error (TLS_GENERIC_ERROR,
- _("TLS not supported on this target"));
+ return beneath->to_get_thread_local_address (beneath, ptid, lm, offset);
}
/* Callback routine used to find a thread based on the TID part of
@@ -1866,7 +1888,7 @@ thread_db_find_thread_from_tid (struct thread_info *thread, void *data)
/* Implement the to_get_ada_task_ptid target method for this target. */
static ptid_t
-thread_db_get_ada_task_ptid (long lwp, long thread)
+thread_db_get_ada_task_ptid (struct target_ops *self, long lwp, long thread)
{
struct thread_info *thread_info;