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f8aeae3473
for ChangeLog [BZ #17090] [BZ #17620] [BZ #17621] [BZ #17628] * NEWS: Update. * elf/dl-tls.c (_dl_update_slotinfo): Clean up outdated DTV entries with Static TLS too. Skip entries past the end of the allocated DTV, from Alan Modra. (tls_get_addr_tail): Update to glibc_likely/unlikely. Move Static TLS DTV entry set up from... (_dl_allocate_tls_init): ... here (fix modid assertion), ... * elf/dl-reloc.c (_dl_nothread_init_static_tls): ... here... * nptl/allocatestack.c (init_one_static_tls): ... and here... * elf/dlopen.c (dl_open_worker): Drop l_tls_modid upper bound for Static TLS. * elf/tlsdeschtab.h (map_generation): Return size_t. Check that the slot we find is associated with the given map before using its generation count. * nptl_db/db_info.c: Include ldsodefs.h. (rtld_global, dtv_slotinfo_list, dtv_slotinfo): New typedefs. * nptl_db/structs.def (DB_RTLD_VARIABLE): New macro. (DB_MAIN_VARIABLE, DB_RTLD_GLOBAL_FIELD): Likewise. (link_map::l_tls_offset): New struct field. (dtv_t::counter): Likewise. (rtld_global): New struct. (_rtld_global): New rtld variable. (dl_tls_dtv_slotinfo_list): New rtld global field. (dtv_slotinfo_list): New struct. (dtv_slotinfo): Likewise. * nptl_db/td_symbol_list.c: Drop gnu/lib-names.h include. (td_lookup): Rename to... (td_mod_lookup): ... this. Use new mod parameter instead of LIBPTHREAD_SO. * nptl_db/td_thr_tlsbase.c: Include link.h. (dtv_slotinfo_list, dtv_slotinfo): New functions. (td_thr_tlsbase): Check DTV generation. Compute Static TLS addresses even if the DTV is out of date or missing them. * nptl_db/fetch-value.c (_td_locate_field): Do not refuse to index zero-length arrays. * nptl_db/thread_dbP.h: Include gnu/lib-names.h. (td_lookup): Make it a macro implemented in terms of... (td_mod_lookup): ... this declaration. * nptl_db/db-symbols.awk (DB_RTLD_VARIABLE): Override. (DB_MAIN_VARIABLE): Likewise.
110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
/* This file is included by pthread_create.c to define in libpthread
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all the magic symbols required by libthread_db.
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Copyright (C) 2003-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <stdint.h>
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#include "thread_dbP.h"
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#include <tls.h>
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#include <ldsodefs.h>
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typedef struct pthread pthread;
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typedef struct pthread_key_struct pthread_key_struct;
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typedef struct pthread_key_data pthread_key_data;
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typedef struct
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{
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struct pthread_key_data data[PTHREAD_KEY_2NDLEVEL_SIZE];
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}
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pthread_key_data_level2;
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typedef struct
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{
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union dtv dtv[UINT32_MAX / 2 / sizeof (union dtv)]; /* No constant bound. */
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} dtv;
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typedef struct link_map link_map;
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typedef struct rtld_global rtld_global;
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typedef struct dtv_slotinfo_list dtv_slotinfo_list;
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typedef struct dtv_slotinfo dtv_slotinfo;
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/* Actually static in nptl/init.c, but we only need it for typeof. */
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extern bool __nptl_initial_report_events;
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#define schedparam_sched_priority schedparam.sched_priority
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#define eventbuf_eventmask eventbuf.eventmask
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#define eventbuf_eventmask_event_bits eventbuf.eventmask.event_bits
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#define DESC(name, offset, obj) \
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DB_DEFINE_DESC (name, 8 * sizeof (obj), 1, offset);
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#define ARRAY_DESC(name, offset, obj) \
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DB_DEFINE_DESC (name, \
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8 * sizeof (obj)[0], sizeof (obj) / sizeof (obj)[0], \
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offset);
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#if TLS_TCB_AT_TP
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# define dtvp header.dtv
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#elif TLS_DTV_AT_TP
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/* Special case hack. If TLS_TCB_SIZE == 0 (on PowerPC), there is no TCB
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containing the DTV at the TP, but actually the TCB lies behind the TP,
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i.e. at the very end of the area covered by TLS_PRE_TCB_SIZE. */
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DESC (_thread_db_pthread_dtvp,
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TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv)
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- (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv *)
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#endif
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#define DB_STRUCT(type) \
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const uint32_t _thread_db_sizeof_##type = sizeof (type);
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#define DB_STRUCT_FIELD(type, field) \
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DESC (_thread_db_##type##_##field, \
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offsetof (type, field), ((type *) 0)->field)
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#define DB_STRUCT_ARRAY_FIELD(type, field) \
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ARRAY_DESC (_thread_db_##type##_##field, \
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offsetof (type, field), ((type *) 0)->field)
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#define DB_VARIABLE(name) DESC (_thread_db_##name, 0, name)
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#define DB_ARRAY_VARIABLE(name) ARRAY_DESC (_thread_db_##name, 0, name)
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#define DB_SYMBOL(name) /* Nothing. */
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#define DB_FUNCTION(name) /* Nothing. */
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#include "structs.def"
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#undef DB_STRUCT
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#undef DB_STRUCT_FIELD
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#undef DB_SYMBOL
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#undef DB_FUNCTION
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#undef DB_VARIABLE
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#undef DESC
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#ifdef DB_THREAD_SELF
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# ifdef DB_THREAD_SELF_INCLUDE
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# include DB_THREAD_SELF_INCLUDE
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# endif
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/* This macro is defined in the machine's tls.h using the three below. */
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# define CONST_THREAD_AREA(bits, value) \
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const uint32_t _thread_db_const_thread_area = (value);
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# define REGISTER_THREAD_AREA(bits, regofs, scale) \
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DB_DEFINE_DESC (_thread_db_register##bits##_thread_area, \
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bits, (scale), (regofs));
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# define REGISTER(bits, size, regofs, bias) \
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DB_DEFINE_DESC (_thread_db_register##bits, size, (uint32_t)(bias), (regofs));
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DB_THREAD_SELF
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#endif
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