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2003-03-15 Roland McGrath <roland@redhat.com>

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* thread_db.h (td_err_e): Add TD_NOTLS and TD_TLSDEFER.
	(td_thr_tlsbase): Declare it.
	* td_thr_tlsbase.c: New file.
	* Makefile (libthread_db-routines): Add it.
	* Versions (libthread_db: GLIBC_2.3.3): New set, add td_thr_tlsbase.
	* td_thr_tls_get_addr.c (td_thr_tls_get_addr): Use td_thr_tlsbase.
This commit is contained in:
Roland McGrath 2003-03-15 23:55:23 +00:00
parent c04dad400a
commit 2f84cc6a48
10 changed files with 178 additions and 87 deletions
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3
linuxthreads_db/Makefile
View File

@ -39,7 +39,8 @@ libthread_db-routines = td_init td_log td_ta_delete td_ta_get_nthreads \
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))

3
linuxthreads_db/Versions
View File

@ -18,4 +18,7 @@ libthread_db {
GLIBC_2.3 {
td_thr_tls_get_addr;
}
GLIBC_2.3.3 {
td_thr_tlsbase;
}
}

42
linuxthreads_db/td_thr_tls_get_addr.c
View File

@ -18,14 +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)),
@ -33,44 +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_descr_struct, p_header.data.dtvp);
#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

67
linuxthreads_db/td_thr_tlsbase.c Normal file
View File

@ -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_descr_struct, p_header.data.dtvp);
#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
}

14
linuxthreads_db/thread_db.h
View File

@ -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,

5
nptl_db/Makefile
View File

@ -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))

3
nptl_db/Versions
View File

@ -18,4 +18,7 @@ libthread_db {
GLIBC_2.3 {
td_thr_tls_get_addr;
}
GLIBC_2.3.3 {
td_thr_tlsbase;
}
}

47
nptl_db/td_thr_tls_get_addr.c
View File

@ -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

67
nptl_db/td_thr_tlsbase.c Normal file
View File

@ -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
}

14
nptl_db/thread_db.h
View File

@ -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,