diff options
Diffstat (limited to 'nptl_db/thread_dbP.h')
| -rw-r--r-- | nptl_db/thread_dbP.h | 239 |
1 files changed, 195 insertions, 44 deletions
diff --git a/nptl_db/thread_dbP.h b/nptl_db/thread_dbP.h index 4407143af0..4546d24c23 100644 --- a/nptl_db/thread_dbP.h +++ b/nptl_db/thread_dbP.h @@ -1,30 +1,54 @@ -/* Private header for thread debug library. */ +/* Private header for thread debug library + 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. */ + #ifndef _THREAD_DBP_H #define _THREAD_DBP_H 1 #include <stdbool.h> +#include <stdint.h> #include <string.h> +#include <stdlib.h> #include <unistd.h> +#include <assert.h> #include "proc_service.h" #include "thread_db.h" -#include "../nptl/pthreadP.h" -#include <list.h> - +#include "../nptl/pthreadP.h" /* This is for *_BITMASK only. */ /* Indeces for the symbol names. */ enum { - SYM_PTHREAD_THREADS_EVENTS = 0, - SYM_PTHREAD_LAST_EVENT, - SYM_PTHREAD_NTHREADS, - SYM_PTHREAD_STACK_USED, - SYM_PTHREAD_STACK_USER, - SYM_PTHREAD_KEYS, - SYM_PTHREAD_KEYS_MAX, - SYM_PTHREAD_SIZEOF_DESCR, - SYM_PTHREAD_CREATE_EVENT, - SYM_PTHREAD_DEATH_EVENT, - SYM_PTHREAD_VERSION, +# define DB_STRUCT(type) SYM_SIZEOF_##type, +# define DB_STRUCT_FIELD(type, field) SYM_##type##_FIELD_##field, +# define DB_SYMBOL(name) SYM_##name, +# define DB_VARIABLE(name) SYM_##name, SYM_DESC_##name, +# include "structs.def" +# undef DB_STRUCT +# undef DB_STRUCT_FIELD +# undef DB_SYMBOL +# undef DB_VARIABLE + + SYM_TH_UNIQUE_CONST_THREAD_AREA, + SYM_TH_UNIQUE_REGISTER64, + SYM_TH_UNIQUE_REGISTER32, + SYM_TH_UNIQUE_REGISTER64_THREAD_AREA, + SYM_TH_UNIQUE_REGISTER32_THREAD_AREA, + SYM_NUM_MESSAGES }; @@ -32,50 +56,68 @@ enum /* Comment out the following for less verbose output. */ #ifndef NDEBUG # define LOG(c) if (__td_debug) __libc_write (2, c "\n", strlen (c "\n")) -extern int __td_debug; +extern int __td_debug attribute_hidden; #else # define LOG(c) #endif +#define DB_DESC_SIZE(desc) ((desc)[0]) +#define DB_DESC_NELEM(desc) ((desc)[1]) +#define DB_DESC_OFFSET(desc) ((int32_t) (desc)[2]) +#define DB_SIZEOF_DESC (3 * sizeof (uint32_t)) +#define DB_DEFINE_DESC(name, size, nelem, offset) \ + const uint32_t name[3] = { (size), (nelem), (offset) } +typedef uint32_t db_desc_t[3]; + + /* Handle for a process. This type is opaque. */ struct td_thragent { + /* Chain on the list of all agent structures. */ + list_t list; + /* Delivered by the debugger and we have to pass it back in the proc callbacks. */ struct ps_prochandle *ph; - /* Some cached information. */ - - /* Lists of running threads. */ - psaddr_t stack_used; - psaddr_t stack_user; - - /* Address of the `pthread_keys' array. */ - struct pthread_key_struct *keys; - - /* Maximum number of thread-local data keys. */ - int pthread_keys_max; - - /* Size of 2nd level array for thread-local data keys. */ - int pthread_key_2ndlevel_size; - - /* Sizeof struct _pthread_descr_struct. */ - int sizeof_descr; - - /* Pointer to the `__pthread_threads_events' variable in the target. */ - psaddr_t pthread_threads_eventsp; - - /* Pointer to the `__pthread_last_event' variable in the target. */ - psaddr_t pthread_last_event; - - /* List head the queue agent structures. */ - list_t list; + /* Cached values read from the inferior. */ +# define DB_STRUCT(type) \ + uint32_t ta_sizeof_##type; +# define DB_STRUCT_FIELD(type, field) \ + db_desc_t ta_field_##type##_##field; +# define DB_SYMBOL(name) \ + psaddr_t ta_addr_##name; +# define DB_VARIABLE(name) \ + psaddr_t ta_addr_##name; \ + db_desc_t ta_var_##name; +# include "structs.def" +# undef DB_STRUCT +# undef DB_STRUCT_FIELD +# undef DB_SYMBOL +# undef DB_VARIABLE + + /* The method of locating a thread's th_unique value. */ + enum + { + ta_howto_unknown, + ta_howto_reg, + ta_howto_reg_thread_area, + ta_howto_const_thread_area + } ta_howto; + union + { + uint32_t const_thread_area; /* Constant argument to ps_get_thread_area. */ + /* These are as if the descriptor of the field in prregset_t, + but DB_DESC_NELEM is overloaded as follows: */ + db_desc_t reg; /* Signed bias applied to register value. */ + db_desc_t reg_thread_area; /* Bits to scale down register value. */ + } ta_howto_data; }; /* List of all known descriptors. */ -extern list_t __td_agent_list; +extern list_t __td_agent_list attribute_hidden; /* Function used to test for correct thread agent pointer. */ @@ -93,6 +135,115 @@ ta_ok (const td_thragent_t *ta) /* Internal wrapper around ps_pglobal_lookup. */ -extern int td_lookup (struct ps_prochandle *ps, int idx, psaddr_t *sym_addr); +extern ps_err_e td_lookup (struct ps_prochandle *ps, + int idx, psaddr_t *sym_addr) attribute_hidden; + + + + +/* Store in psaddr_t VAR the address of inferior's symbol NAME. */ +#define DB_GET_SYMBOL(var, ta, name) \ + (((ta)->ta_addr_##name == 0 \ + && td_lookup ((ta)->ph, SYM_##name, &(ta)->ta_addr_##name) != PS_OK) \ + ? TD_ERR : ((var) = (ta)->ta_addr_##name, TD_OK)) + +/* Store in psaddr_t VAR the value of ((TYPE) PTR)->FIELD[IDX] in the inferior. + A target field smaller than psaddr_t is zero-extended. */ +#define DB_GET_FIELD(var, ta, ptr, type, field, idx) \ + _td_fetch_value ((ta), (ta)->ta_field_##type##_##field, \ + SYM_##type##_FIELD_##field, \ + (psaddr_t) 0 + (idx), (ptr), &(var)) + +#define DB_GET_FIELD_ADDRESS(var, ta, ptr, type, field, idx) \ + ((var) = (ptr), _td_locate_field ((ta), (ta)->ta_field_##type##_##field, \ + SYM_##type##_FIELD_##field, \ + (psaddr_t) 0 + (idx), &(var))) + +extern td_err_e _td_locate_field (td_thragent_t *ta, + db_desc_t desc, int descriptor_name, + psaddr_t idx, + psaddr_t *address) attribute_hidden; + + +/* Like DB_GET_FIELD, but PTR is a local pointer to a structure that + has already been copied in from the inferior. */ +#define DB_GET_FIELD_LOCAL(var, ta, ptr, type, field, idx) \ + _td_fetch_value_local ((ta), (ta)->ta_field_##type##_##field, \ + SYM_##type##_FIELD_##field, \ + (psaddr_t) 0 + (idx), (ptr), &(var)) + +/* Store in psaddr_t VAR the value of variable NAME[IDX] in the inferior. + A target value smaller than psaddr_t is zero-extended. */ +#define DB_GET_VALUE(var, ta, name, idx) \ + (((ta)->ta_addr_##name == 0 \ + && td_lookup ((ta)->ph, SYM_##name, &(ta)->ta_addr_##name) != PS_OK) \ + ? TD_ERR \ + : _td_fetch_value ((ta), (ta)->ta_var_##name, SYM_DESC_##name, \ + (psaddr_t) 0 + (idx), (ta)->ta_addr_##name, &(var))) + +/* Helper functions for those. */ +extern td_err_e _td_fetch_value (td_thragent_t *ta, + db_desc_t field, int descriptor_name, + psaddr_t idx, psaddr_t address, + psaddr_t *result) attribute_hidden; +extern td_err_e _td_fetch_value_local (td_thragent_t *ta, + db_desc_t field, + int descriptor_name, + psaddr_t idx, void *address, + psaddr_t *result) attribute_hidden; + +/* Store psaddr_t VALUE in ((TYPE) PTR)->FIELD[IDX] in the inferior. + A target field smaller than psaddr_t is zero-extended. */ +#define DB_PUT_FIELD(ta, ptr, type, field, idx, value) \ + _td_store_value ((ta), (ta)->ta_field_##type##_##field, \ + SYM_##type##_FIELD_##field, \ + (psaddr_t) 0 + (idx), (ptr), (value)) + +#define DB_PUT_FIELD_LOCAL(ta, ptr, type, field, idx, value) \ + _td_store_value_local ((ta), (ta)->ta_field_##type##_##field, \ + SYM_##type##_FIELD_##field, \ + (psaddr_t) 0 + (idx), (ptr), (value)) + +/* Store psaddr_t VALUE in variable NAME[IDX] in the inferior. + A target field smaller than psaddr_t is zero-extended. */ +#define DB_PUT_VALUE(ta, name, idx, value) \ + (((ta)->ta_addr_##name == 0 \ + && td_lookup ((ta)->ph, SYM_##name, &(ta)->ta_addr_##name) != PS_OK) \ + ? TD_ERR \ + : _td_store_value ((ta), (ta)->ta_var_##name, SYM_DESC_##name, \ + (psaddr_t) 0 + (idx), (ta)->ta_addr_##name, (value))) + +/* Helper functions for those. */ +extern td_err_e _td_store_value (td_thragent_t *ta, + db_desc_t field, int descriptor_name, + psaddr_t idx, psaddr_t address, + psaddr_t value) attribute_hidden; +extern td_err_e _td_store_value_local (td_thragent_t *ta, + db_desc_t field, int descriptor_name, + psaddr_t idx, void *address, + psaddr_t value) attribute_hidden; + +#define DB_GET_STRUCT(var, ta, ptr, type) \ + ({ td_err_e _err = TD_OK; \ + if ((ta)->ta_sizeof_##type == 0) \ + _err = _td_check_sizeof ((ta), &(ta)->ta_sizeof_##type, \ + SYM_SIZEOF_##type); \ + if (_err == TD_OK) \ + _err = ps_pdread ((ta)->ph, (ptr), \ + (var) = __alloca ((ta)->ta_sizeof_##type), \ + (ta)->ta_sizeof_##type) \ + == PS_OK ? TD_OK : TD_ERR; \ + else \ + (var) = NULL; \ + _err; \ + }) +#define DB_PUT_STRUCT(ta, ptr, type, copy) \ + ({ assert ((ta)->ta_sizeof_##type != 0); \ + ps_pdwrite ((ta)->ph, (ptr), (copy), (ta)->ta_sizeof_##type) \ + == PS_OK ? TD_OK : TD_ERR; \ + }) + +extern td_err_e _td_check_sizeof (td_thragent_t *ta, uint32_t *sizep, + int sizep_name) attribute_hidden; #endif /* thread_dbP.h */ |