summaryrefslogtreecommitdiff
path: root/nptl_db
diff options
context:
space:
mode:
Diffstat (limited to 'nptl_db')
-rw-r--r--nptl_db/Makefile5
-rw-r--r--nptl_db/Versions3
-rw-r--r--nptl_db/td_thr_tls_get_addr.c47
-rw-r--r--nptl_db/td_thr_tlsbase.c67
-rw-r--r--nptl_db/thread_db.h14
5 files changed, 90 insertions, 46 deletions
diff --git a/nptl_db/Makefile b/nptl_db/Makefile
index 4e6d1ea236..d6dcec5aea 100644
--- a/nptl_db/Makefile
+++ b/nptl_db/Makefile
@@ -41,9 +41,8 @@ libthread_db-routines = td_init td_log td_ta_new td_ta_delete \
td_thr_event_enable td_thr_set_event \
td_thr_clear_event td_thr_event_getmsg \
td_ta_set_event td_ta_event_getmsg \
- td_ta_clear_event td_symbol_list td_thr_tls_get_addr
-
-
+ td_ta_clear_event td_symbol_list \
+ td_thr_tlsbase td_thr_tls_get_addr
libthread_db-inhibit-o = $(filter-out .os,$(object-suffixes))
diff --git a/nptl_db/Versions b/nptl_db/Versions
index 4ca8042c12..063493c676 100644
--- a/nptl_db/Versions
+++ b/nptl_db/Versions
@@ -18,4 +18,7 @@ libthread_db {
GLIBC_2.3 {
td_thr_tls_get_addr;
}
+ GLIBC_2.3.3 {
+ td_thr_tlsbase;
+ }
}
diff --git a/nptl_db/td_thr_tls_get_addr.c b/nptl_db/td_thr_tls_get_addr.c
index d1e29da8b9..c900cac8e0 100644
--- a/nptl_db/td_thr_tls_get_addr.c
+++ b/nptl_db/td_thr_tls_get_addr.c
@@ -1,7 +1,7 @@
/* Get address of thread local variable.
- Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 2002,2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 2002.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -18,15 +18,9 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#include <stddef.h>
#include <link.h>
#include "thread_dbP.h"
-
-/* Value used for dtv entries for which the allocation is delayed. */
-# define TLS_DTV_UNALLOCATED ((void *) -1l)
-
-
td_err_e
td_thr_tls_get_addr (const td_thrhandle_t *th __attribute__ ((unused)),
void *map_address __attribute__ ((unused)),
@@ -34,44 +28,17 @@ td_thr_tls_get_addr (const td_thrhandle_t *th __attribute__ ((unused)),
void **address __attribute__ ((unused)))
{
#if USE_TLS
- size_t modid;
- union dtv pdtv, *dtvp;
-
- LOG ("td_thr_tls_get_addr");
-
- psaddr_t dtvpp = th->th_unique;
-#if TLS_TCB_AT_TP
- dtvpp += offsetof (struct pthread, header.dtv);
-#elif TLS_DTV_AT_TP
- dtvpp += TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv);
-#else
-# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined."
-#endif
-
- /* Get the DTV pointer from the thread descriptor. */
- if (ps_pdread (th->th_ta_p->ph, dtvpp, &dtvp, sizeof dtvp) != PS_OK)
- return TD_ERR; /* XXX Other error value? */
-
/* Read the module ID from the link_map. */
+ size_t modid;
if (ps_pdread (th->th_ta_p->ph,
&((struct link_map *) map_address)->l_tls_modid,
&modid, sizeof modid) != PS_OK)
return TD_ERR; /* XXX Other error value? */
- /* Get the corresponding entry in the DTV. */
- if (ps_pdread (th->th_ta_p->ph, dtvp + modid,
- &pdtv, sizeof (union dtv)) != PS_OK)
- return TD_ERR; /* XXX Other error value? */
-
- /* It could be that the memory for this module is not allocated for
- the given thread. */
- if (pdtv.pointer == TLS_DTV_UNALLOCATED)
- /* There is not much we can do. */
- return TD_NOTALLOC;
-
- *address = (char *) pdtv.pointer + offset;
-
- return TD_OK;
+ td_err_e result = td_thr_tlsbase (th, modid, address);
+ if (result == TD_OK)
+ *address += offset;
+ return result;
#else
return TD_ERR;
#endif
diff --git a/nptl_db/td_thr_tlsbase.c b/nptl_db/td_thr_tlsbase.c
new file mode 100644
index 0000000000..ff8f1c7504
--- /dev/null
+++ b/nptl_db/td_thr_tlsbase.c
@@ -0,0 +1,67 @@
+/* Locate TLS data for a thread.
+ Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "thread_dbP.h"
+
+/* Value used for dtv entries for which the allocation is delayed. */
+# define TLS_DTV_UNALLOCATED ((void *) -1l)
+
+td_err_e
+td_thr_tlsbase (const td_thrhandle_t *th,
+ unsigned long int modid,
+ psaddr_t *base)
+{
+ if (modid < 1)
+ return TD_NOTLS;
+
+#if USE_TLS
+ union dtv pdtv, *dtvp;
+
+ LOG ("td_thr_tlsbase");
+
+ psaddr_t dtvpp = th->th_unique;
+#if TLS_TCB_AT_TP
+ dtvpp += offsetof (struct pthread, header.dtv);
+#elif TLS_DTV_AT_TP
+ dtvpp += TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv);
+#else
+# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined."
+#endif
+
+ /* Get the DTV pointer from the thread descriptor. */
+ if (ps_pdread (th->th_ta_p->ph, dtvpp, &dtvp, sizeof dtvp) != PS_OK)
+ return TD_ERR; /* XXX Other error value? */
+
+ /* Get the corresponding entry in the DTV. */
+ if (ps_pdread (th->th_ta_p->ph, dtvp + modid,
+ &pdtv, sizeof (union dtv)) != PS_OK)
+ return TD_ERR; /* XXX Other error value? */
+
+ /* It could be that the memory for this module is not allocated for
+ the given thread. */
+ if (pdtv.pointer == TLS_DTV_UNALLOCATED)
+ return TD_TLSDEFER;
+
+ *base = (char *) pdtv.pointer;
+
+ return TD_OK;
+#else
+ return TD_ERR;
+#endif
+}
diff --git a/nptl_db/thread_db.h b/nptl_db/thread_db.h
index ee7179c6dc..6328e16e76 100644
--- a/nptl_db/thread_db.h
+++ b/nptl_db/thread_db.h
@@ -1,4 +1,5 @@
-/* Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
+/* thread_db.h -- interface to libthread_db.so library for debugging -lpthread
+ Copyright (C) 1999,2001,2002,2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -52,8 +53,10 @@ typedef enum
TD_MALLOC, /* Out of memory. */
TD_PARTIALREG, /* Not entire register set was read or written. */
TD_NOXREGS, /* X register set not available for given thread. */
- TD_NOTALLOC, /* TLS memory not yet allocated. */
- TD_VERSION /* Version if libpthread and libthread_db do not match. */
+ TD_TLSDEFER, /* Thread has not yet allocated TLS for given module. */
+ TD_NOTALLOC = TD_TLSDEFER,
+ TD_VERSION, /* Version if libpthread and libthread_db do not match. */
+ TD_NOTLS /* There is TLS segment in the given module. */
} td_err_e;
@@ -402,6 +405,11 @@ extern td_err_e td_thr_setxregs (const td_thrhandle_t *__th,
const void *__addr);
+/* Get address of the given module's TLS storage area for the given thread. */
+extern td_err_e td_thr_tlsbase (const td_thrhandle_t *__th,
+ unsigned long int __modid,
+ psaddr_t *__base);
+
/* Get address of thread local variable. */
extern td_err_e td_thr_tls_get_addr (const td_thrhandle_t *__th,
void *__map_address, size_t __offset,
View Lorry Controller Status