1 /* This file is included by pthread_create.c to define in libpthread 2 all the magic symbols required by libthread_db. 3 4 Copyright (C) 2003-2022 Free Software Foundation, Inc. 5 This file is part of the GNU C Library. 6 7 The GNU C Library is free software; you can redistribute it and/or 8 modify it under the terms of the GNU Lesser General Public 9 License as published by the Free Software Foundation; either 10 version 2.1 of the License, or (at your option) any later version. 11 12 The GNU C Library is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 Lesser General Public License for more details. 16 17 You should have received a copy of the GNU Lesser General Public 18 License along with the GNU C Library; if not, see 19 <https://www.gnu.org/licenses/>. */ 20 21 #include <stdint.h> 22 #include "thread_dbP.h" 23 #include <tls.h> 24 #include <ldsodefs.h> 25 26 typedef struct pthread pthread; 27 typedef struct pthread_key_struct pthread_key_struct; 28 typedef struct pthread_key_data pthread_key_data; 29 typedef struct 30 { 31 struct pthread_key_data data[PTHREAD_KEY_2NDLEVEL_SIZE]; 32 } 33 pthread_key_data_level2; 34 35 typedef struct 36 { 37 union dtv dtv[UINT32_MAX / 2 / sizeof (union dtv)]; /* No constant bound. */ 38 } dtv; 39 40 typedef struct link_map link_map; 41 typedef struct rtld_global rtld_global; 42 typedef struct dtv_slotinfo_list dtv_slotinfo_list; 43 typedef struct dtv_slotinfo dtv_slotinfo; 44 45 #define schedparam_sched_priority schedparam.sched_priority 46 47 #define eventbuf_eventmask eventbuf.eventmask 48 #define eventbuf_eventmask_event_bits eventbuf.eventmask.event_bits 49 50 #define DESC(name, offset, obj) \ 51 DB_DEFINE_DESC (name, 8 * sizeof (obj), 1, offset); 52 #define ARRAY_DESC(name, offset, obj) \ 53 DB_DEFINE_DESC (name, \ 54 8 * sizeof (obj)[0], sizeof (obj) / sizeof (obj)[0], \ 55 offset); 56 /* Flexible arrays do not have a length that can be determined. */ 57 #define FLEXIBLE_ARRAY_DESC(name, offset, obj) \ 58 DB_DEFINE_DESC (name, 8 * sizeof (obj)[0], 0, offset); 59 60 #if TLS_TCB_AT_TP 61 # define dtvp header.dtv 62 #elif TLS_DTV_AT_TP 63 /* Special case hack. If TLS_TCB_SIZE == 0 (on PowerPC), there is no TCB 64 containing the DTV at the TP, but actually the TCB lies behind the TP, 65 i.e. at the very end of the area covered by TLS_PRE_TCB_SIZE. */ 66 DESC (_thread_db_pthread_dtvp, 67 TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv) 68 - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv *) 69 #endif 70 71 72 #define DB_STRUCT(type) \ 73 const uint32_t _thread_db_sizeof_##type = sizeof (type); 74 #define DB_STRUCT_FIELD(type, field) \ 75 DESC (_thread_db_##type##_##field, \ 76 offsetof (type, field), ((type *) 0)->field) 77 #define DB_STRUCT_ARRAY_FIELD(type, field) \ 78 ARRAY_DESC (_thread_db_##type##_##field, \ 79 offsetof (type, field), ((type *) 0)->field) 80 #define DB_STRUCT_FLEXIBLE_ARRAY(type, field) \ 81 FLEXIBLE_ARRAY_DESC (_thread_db_##type##_##field, \ 82 offsetof (type, field), ((type *) 0)->field) 83 #define DB_VARIABLE(name) DESC (_thread_db_##name, 0, name) 84 #define DB_ARRAY_VARIABLE(name) ARRAY_DESC (_thread_db_##name, 0, name) 85 #define DB_SYMBOL(name) /* Nothing. */ 86 #define DB_FUNCTION(name) /* Nothing. */ 87 #include "structs.def" 88 #undef DB_STRUCT 89 #undef DB_STRUCT_FIELD 90 #undef DB_SYMBOL 91 #undef DB_FUNCTION 92 #undef DB_VARIABLE 93 #undef DESC 94 95 96 97 #ifdef DB_THREAD_SELF 98 # ifdef DB_THREAD_SELF_INCLUDE 99 # include DB_THREAD_SELF_INCLUDE 100 # endif 101 102 /* This macro is defined in the machine's tls.h using the three below. */ 103 # define CONST_THREAD_AREA(bits, value) \ 104 const uint32_t _thread_db_const_thread_area = (value); 105 # define REGISTER_THREAD_AREA(bits, regofs, scale) \ 106 DB_DEFINE_DESC (_thread_db_register##bits##_thread_area, \ 107 bits, (scale), (regofs)); 108 # define REGISTER(bits, size, regofs, bias) \ 109 DB_DEFINE_DESC (_thread_db_register##bits, size, (uint32_t)(bias), (regofs)); 110 111 DB_THREAD_SELF 112 #endif 113