1 //========================================================================
5 // Supports thread-aware debugging
7 //========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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27 // or inline functions from this file, or you compile this file and link it
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30 // License. However the source code for this file must still be made available
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38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //========================================================================
41 //#####DESCRIPTIONBEGIN####
43 // Author(s): Red Hat, nickg
44 // Contributors: Red Hat, nickg
47 // Description: These are the calls used to extract operating system
48 // specific information used in supporting thread aware
49 // debugging. The Operating Environment being debugged
50 // needs to supply these functions.
51 // Usage: This header is not to be included by user code.
53 //####DESCRIPTIONEND####
55 //========================================================================
57 #if !defined(DBG_THREADS_API_INCLUDED)
58 #define DBG_THREADS_API_INCLUDED 1
60 #include <cyg/infra/cyg_type.h> /* externC */
62 #define has_thread_void 0
63 #define has_thread_current 1
64 #define has_thread_registers 2
65 #define has_thread_reg_change 4
66 #define has_thread_list 8
67 #define has_thread_info 16
69 typedef unsigned char threadref[8] ;
71 struct dbg_capabilities
77 /* fill in the list of thread aware capabilities */
78 externC int dbg_thread_capabilities(struct dbg_capabilities * cbp) ;
81 /* Fillin the identifier of the current thread */
82 /* return 1 if defined, 0 if not defined */
83 externC int dbg_currthread(threadref * varparm) ;
85 /* Return the unique ID number of a given thread. */
86 /* Return 0 if not valid. */
87 externC int dbg_thread_id(threadref *threadid);
89 /* Return the unique ID number of the current thread. */
90 externC int dbg_currthread_id(void);
92 /* get the first or next member of the list of known threads */
93 externC int dbg_threadlist(int startflag,
94 threadref * lastthreadid,
95 threadref * next_thread
98 /* return 1 if next_threadid has been filled in with a value */
99 /* return 0 if there are none or no more */
101 /* The O.S can fill in the following information about a thread when queried.
102 The structure of thise strings is determined by the O.S.
103 It is display oriented, so figure out what the users need to see.
104 Nulls are OK but GDB will fill some not so meaningful data.
105 These pointers may be in the calles private structures, the info will
106 get copied immediatly after the call to retreive it.
108 struct cygmon_thread_debug_info
110 threadref thread_id ;
111 int context_exists ; /* To the point where examining its state,
112 registers and stack makes sense to GDB */
113 char * thread_display ; /* As shown in thread status window, name, state */
114 char * unique_thread_name ; /* human readable identifier, window label */
115 char * more_display ; /* more detailed info about thread.
116 priority, queuedepth, state, stack usage, statistics */
122 externC int dbg_threadinfo(
123 threadref * threadid,
124 struct cygmon_thread_debug_info * info) ;
126 /* Return 1 if threadid is defined and info copied, 0 otherwise */
128 /* The O.S should fillin the array of registers using values from the
129 saves context. The array MUST be in GDB register save order even if
130 the saved context is different or smaller. Do not alter the values of
131 registers which are NOT in the O.S. thread context. Their default values
132 have already been assigned.
135 externC int dbg_getthreadreg(
136 threadref * osthreadid,
137 int regcount, /* count of registers in the array */
138 void * regval) ; /* fillin this array */
141 /* The O.S. should scan through this list of registers which are in
142 GDB order and the O.S. should replace the values of all registers
143 which are defined in the saved context of thread or process identified
144 by osthreadid. Return 0 if the threadis does not map to a known
145 process or other error. Return 1 if the setting is successful. */
147 externC int dbg_setthreadreg(
148 threadref * osthreadid,
149 int regcount , /* number of registers */
152 /* Control over OS scheduler. With the scheduler locked it should not
153 perform any rescheduling in response to interrupts. */
154 externC int dbg_scheduler(
155 threadref * osthreadid,
156 int lock, /* 0 == unlock, 1 == lock */
157 int mode); /* 0 == step, 1 == continue */
161 #endif /* DBG_THREADS_API_INCLUDED */