1 /* Simulator tracing/debugging support.
2 Copyright (C) 1997 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
5 This file is part of GDB, the GNU debugger.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 This program 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
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License along
18 with this program; if not, write to the Free Software Foundation, Inc.,
19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 /* This file is meant to be included by sim-basics.h. */
26 /* Standard traceable entities. */
29 /* Trace insn execution. */
32 /* Trace insn decoding.
33 ??? This is more of a simulator debugging operation and might best be
34 moved to --debug-decode. */
37 /* Trace insn extraction.
38 ??? This is more of a simulator debugging operation and might best be
39 moved to --debug-extract. */
42 /* Trace insn execution but include line numbers. */
45 /* Trace memory operations.
46 The difference between this and TRACE_CORE_IDX is (I think) that this
47 is intended to apply to a higher level. TRACE_CORE_IDX applies to the
48 low level core operations. */
51 /* Include model performance data in tracing output. */
54 /* Trace ALU operations. */
57 /* Trace memory core operations. */
63 /* Trace fpu operations. */
66 /* Trace branching. */
69 /* Add information useful for debugging the simulator to trace output. */
72 /* Simulator specific trace bits begin here. */
76 /* Maximum number of traceable entities. */
77 #ifndef MAX_TRACE_VALUES
78 #define MAX_TRACE_VALUES 32
81 /* Masks so WITH_TRACE can have symbolic values.
82 The case choice here is on purpose. The lowercase parts are args to
84 #define TRACE_insn (1 << TRACE_INSN_IDX)
85 #define TRACE_decode (1 << TRACE_DECODE_IDX)
86 #define TRACE_extract (1 << TRACE_EXTRACT_IDX)
87 #define TRACE_linenum (1 << TRACE_LINENUM_IDX)
88 #define TRACE_memory (1 << TRACE_MEMORY_IDX)
89 #define TRACE_model (1 << TRACE_MODEL_IDX)
90 #define TRACE_alu (1 << TRACE_ALU_IDX)
91 #define TRACE_core (1 << TRACE_CORE_IDX)
92 #define TRACE_events (1 << TRACE_EVENTS_IDX)
93 #define TRACE_fpu (1 << TRACE_FPU_IDX)
94 #define TRACE_branch (1 << TRACE_BRANCH_IDX)
95 #define TRACE_debug (1 << TRACE_DEBUG_IDX)
97 /* Preprocessor macros to simplify tests of WITH_TRACE. */
98 #define WITH_TRACE_INSN_P (WITH_TRACE & TRACE_insn)
99 #define WITH_TRACE_DECODE_P (WITH_TRACE & TRACE_decode)
100 #define WITH_TRACE_EXTRACT_P (WITH_TRACE & TRACE_extract)
101 #define WITH_TRACE_LINENUM_P (WITH_TRACE & TRACE_linenum)
102 #define WITH_TRACE_MEMORY_P (WITH_TRACE & TRACE_memory)
103 #define WITH_TRACE_MODEL_P (WITH_TRACE & TRACE_model)
104 #define WITH_TRACE_ALU_P (WITH_TRACE & TRACE_alu)
105 #define WITH_TRACE_CORE_P (WITH_TRACE & TRACE_core)
106 #define WITH_TRACE_EVENTS_P (WITH_TRACE & TRACE_events)
107 #define WITH_TRACE_FPU_P (WITH_TRACE & TRACE_fpu)
108 #define WITH_TRACE_BRANCH_P (WITH_TRACE & TRACE_branch)
109 #define WITH_TRACE_DEBUG_P (WITH_TRACE & TRACE_debug)
111 /* Tracing install handler. */
112 MODULE_INSTALL_FN trace_install;
114 /* Struct containing all system and cpu trace data.
116 System trace data is stored with the associated module.
117 System and cpu tracing must share the same space of bitmasks as they
118 are arguments to --with-trace. One could have --with-trace and
119 --with-cpu-trace or some such but that's an over-complication at this point
120 in time. Also, there may be occasions where system and cpu tracing may
121 wish to share a name. */
123 typedef struct _trace_data {
125 /* Boolean array of specified tracing flags. */
126 /* ??? It's not clear that using an array vs a bit mask is faster.
127 Consider the case where one wants to test whether any of several bits
129 char trace_flags[MAX_TRACE_VALUES];
130 #define TRACE_FLAGS(t) ((t)->trace_flags)
132 /* Tracing output goes to this or stderr if NULL.
133 We can't store `stderr' here as stderr goes through a callback. */
135 #define TRACE_FILE(t) ((t)->trace_file)
137 /* Buffer to store the prefix to be printed before any trace line */
138 char trace_prefix[256];
139 #define TRACE_PREFIX(t) ((t)->trace_prefix)
141 /* Buffer to save the inputs for the current instruction. Use a
142 union to force the buffer into correct alignment */
148 } trace_input_data[16];
149 unsigned8 trace_input_fmt[16];
150 unsigned8 trace_input_size[16];
152 #define TRACE_INPUT_DATA(t) ((t)->trace_input_data)
153 #define TRACE_INPUT_FMT(t) ((t)->trace_input_fmt)
154 #define TRACE_INPUT_SIZE(t) ((t)->trace_input_size)
155 #define TRACE_INPUT_IDX(t) ((t)->trace_input_idx)
157 /* Category of trace being performed */
159 #define TRACE_IDX(t) ((t)->trace_idx)
164 /* System tracing support. */
166 #define STATE_TRACE_FLAGS(sd) TRACE_FLAGS (STATE_TRACE_DATA (sd))
168 /* Return non-zero if tracing of IDX is enabled for non-cpu specific
169 components. The "S" in "STRACE" refers to "System". */
170 #define STRACE_P(sd,idx) \
171 ((WITH_TRACE & (1 << (idx))) != 0 \
172 && STATE_TRACE_FLAGS (sd)[idx] != 0)
174 /* Non-zero if --trace-<xxxx> was specified for SD. */
175 #define STRACE_DEBUG_P(sd) STRACE_P (sd, TRACE_DEBUG_IDX)
177 /* CPU tracing support. */
179 #define CPU_TRACE_FLAGS(cpu) TRACE_FLAGS (CPU_TRACE_DATA (cpu))
181 /* Return non-zero if tracing of IDX is enabled for CPU. */
182 #define TRACE_P(cpu,idx) \
183 ((WITH_TRACE & (1 << (idx))) != 0 \
184 && CPU_TRACE_FLAGS (cpu)[idx] != 0)
186 /* Non-zero if --trace-<xxxx> was specified for CPU. */
187 #define TRACE_INSN_P(cpu) TRACE_P (cpu, TRACE_INSN_IDX)
188 #define TRACE_DECODE_P(cpu) TRACE_P (cpu, TRACE_DECODE_IDX)
189 #define TRACE_EXTRACT_P(cpu) TRACE_P (cpu, TRACE_EXTRACT_IDX)
190 #define TRACE_LINENUM_P(cpu) TRACE_P (cpu, TRACE_LINENUM_IDX)
191 #define TRACE_MEMORY_P(cpu) TRACE_P (cpu, TRACE_MEMORY_IDX)
192 #define TRACE_MODEL_P(cpu) TRACE_P (cpu, TRACE_MODEL_IDX)
193 #define TRACE_ALU_P(cpu) TRACE_P (cpu, TRACE_ALU_IDX)
194 #define TRACE_CORE_P(cpu) TRACE_P (cpu, TRACE_CORE_IDX)
195 #define TRACE_EVENTS_P(cpu) TRACE_P (cpu, TRACE_EVENTS_IDX)
196 #define TRACE_FPU_P(cpu) TRACE_P (cpu, TRACE_FPU_IDX)
197 #define TRACE_BRANCH_P(cpu) TRACE_P (cpu, TRACE_BRANCH_IDX)
198 #define TRACE_DEBUG_P(cpu) TRACE_P (cpu, TRACE_DEBUG_IDX)
200 /* Traceing functions.
204 /* Prime the trace buffers ready for any trace output.
205 Must be called prior to any other trace operation */
206 extern void trace_prefix PARAMS ((SIM_DESC sd,
210 const char *file_name,
214 __attribute__((format (printf, 7, 8)));
216 /* Generic trace print, assumes trace_prefix() has been called */
218 extern void trace_generic PARAMS ((SIM_DESC sd,
223 __attribute__((format (printf, 4, 5)));
225 /* Trace a varying number of word sized inputs/outputs. trace_result*
226 must be called to close the trace operation. */
228 extern void trace_input0 PARAMS ((SIM_DESC sd,
231 extern void trace_input_word1 PARAMS ((SIM_DESC sd,
235 extern void trace_input_word2 PARAMS ((SIM_DESC sd,
240 extern void trace_input_word3 PARAMS ((SIM_DESC sd,
247 extern void trace_input_fp1 PARAMS ((SIM_DESC sd,
252 extern void trace_input_fp2 PARAMS ((SIM_DESC sd,
258 extern void trace_input_fp3 PARAMS ((SIM_DESC sd,
265 extern void trace_input_fpu1 PARAMS ((SIM_DESC sd,
268 struct _sim_fpu *f0));
270 extern void trace_input_fpu2 PARAMS ((SIM_DESC sd,
274 struct _sim_fpu *f1));
276 extern void trace_input_fpu3 PARAMS ((SIM_DESC sd,
281 struct _sim_fpu *f2));
283 /* Other trace_input{_<fmt><nr-inputs>} functions can go here */
285 extern void trace_result_word1 PARAMS ((SIM_DESC sd,
290 extern void trace_result_fp1 PARAMS ((SIM_DESC sd,
295 extern void trace_result_fpu1 PARAMS ((SIM_DESC sd,
298 struct _sim_fpu *f0));
300 extern void trace_result_string1 PARAMS ((SIM_DESC sd,
305 extern void trace_result_word1_string1 PARAMS ((SIM_DESC sd,
311 /* Other trace_result{_<type><nr-results>} */
314 /* Macro's for tracing ALU instructions */
315 #define TRACE_ALU_INPUT0() \
317 if (TRACE_ALU_P (CPU)) \
318 trace_input0 (SD, CPU, TRACE_ALU_IDX); \
321 #define TRACE_ALU_INPUT1(V0) \
323 if (TRACE_ALU_P (CPU)) \
324 trace_input_word1 (SD, CPU, TRACE_ALU_IDX, (V0)); \
327 #define TRACE_ALU_INPUT2(V0,V1) \
329 if (TRACE_ALU_P (CPU)) \
330 trace_input_word2 (SD, CPU, TRACE_ALU_IDX, (V0), (V1)); \
333 #define TRACE_ALU_INPUT3(V0,V1,V2) \
335 if (TRACE_ALU_P (CPU)) \
336 trace_input_word3 (SD, CPU, TRACE_ALU_IDX, (V0), (V1), (V2)); \
339 #define TRACE_ALU_RESULT(R0) \
341 if (TRACE_ALU_P (CPU)) \
342 trace_result_word1 (SD, CPU, TRACE_ALU_IDX, (R0)); \
346 /* The function trace_one_insn has been replaced by trace_generic */
347 extern void trace_one_insn PARAMS ((SIM_DESC sd,
351 const char *file_name,
356 __attribute__((format (printf, 8, 9)));
358 extern void trace_printf PARAMS ((SIM_DESC, sim_cpu *, const char *, ...))
359 __attribute__((format (printf, 3, 4)));
361 extern void trace_vprintf PARAMS ((SIM_DESC, sim_cpu *, const char *, va_list));
364 This is included here because there isn't enough of it to justify
367 /* Return non-zero if debugging of IDX for CPU is enabled. */
368 #define DEBUG_P(cpu, idx) \
369 ((WITH_DEBUG & (1 << (idx))) != 0 \
370 && CPU_DEBUG_FLAGS (cpu)[idx] != 0)
372 /* Non-zero if "--debug-insn" specified. */
373 #define DEBUG_INSN_P(cpu) DEBUG_P (cpu, DEBUG_INSN_IDX)
375 extern void debug_printf PARAMS ((sim_cpu *, const char *, ...))
376 __attribute__((format (printf, 2, 3)));
378 #endif /* SIM_TRACE_H */