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-rw-r--r--nptl_db/thread_dbP.h239
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 */