1 /* Simulator tracing/debugging support.
2 Copyright (C) 1997, 1998 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 /* The -t option only prints useful values. It's easy to type and shouldn't
82 splat on the screen everything under the sun making nothing easy to
84 #define TRACE_USEFUL_MASK \
85 ((1 << TRACE_INSN_IDX) \
86 | (1 << TRACE_LINENUM_IDX) \
87 | (1 << TRACE_MEMORY_IDX) \
88 | (1 << TRACE_MODEL_IDX) \
89 | (1 << TRACE_EVENTS_IDX))
91 /* Masks so WITH_TRACE can have symbolic values.
92 The case choice here is on purpose. The lowercase parts are args to
94 #define TRACE_insn (1 << TRACE_INSN_IDX)
95 #define TRACE_decode (1 << TRACE_DECODE_IDX)
96 #define TRACE_extract (1 << TRACE_EXTRACT_IDX)
97 #define TRACE_linenum (1 << TRACE_LINENUM_IDX)
98 #define TRACE_memory (1 << TRACE_MEMORY_IDX)
99 #define TRACE_model (1 << TRACE_MODEL_IDX)
100 #define TRACE_alu (1 << TRACE_ALU_IDX)
101 #define TRACE_core (1 << TRACE_CORE_IDX)
102 #define TRACE_events (1 << TRACE_EVENTS_IDX)
103 #define TRACE_fpu (1 << TRACE_FPU_IDX)
104 #define TRACE_branch (1 << TRACE_BRANCH_IDX)
105 #define TRACE_debug (1 << TRACE_DEBUG_IDX)
107 /* Preprocessor macros to simplify tests of WITH_TRACE. */
108 #define WITH_TRACE_INSN_P (WITH_TRACE & TRACE_insn)
109 #define WITH_TRACE_DECODE_P (WITH_TRACE & TRACE_decode)
110 #define WITH_TRACE_EXTRACT_P (WITH_TRACE & TRACE_extract)
111 #define WITH_TRACE_LINENUM_P (WITH_TRACE & TRACE_linenum)
112 #define WITH_TRACE_MEMORY_P (WITH_TRACE & TRACE_memory)
113 #define WITH_TRACE_MODEL_P (WITH_TRACE & TRACE_model)
114 #define WITH_TRACE_ALU_P (WITH_TRACE & TRACE_alu)
115 #define WITH_TRACE_CORE_P (WITH_TRACE & TRACE_core)
116 #define WITH_TRACE_EVENTS_P (WITH_TRACE & TRACE_events)
117 #define WITH_TRACE_FPU_P (WITH_TRACE & TRACE_fpu)
118 #define WITH_TRACE_BRANCH_P (WITH_TRACE & TRACE_branch)
119 #define WITH_TRACE_DEBUG_P (WITH_TRACE & TRACE_debug)
121 /* Tracing install handler. */
122 MODULE_INSTALL_FN trace_install;
124 /* Struct containing all system and cpu trace data.
126 System trace data is stored with the associated module.
127 System and cpu tracing must share the same space of bitmasks as they
128 are arguments to --with-trace. One could have --with-trace and
129 --with-cpu-trace or some such but that's an over-complication at this point
130 in time. Also, there may be occasions where system and cpu tracing may
131 wish to share a name. */
133 typedef struct _trace_data {
135 /* Global summary of all the current trace options */
138 /* Boolean array of specified tracing flags. */
139 /* ??? It's not clear that using an array vs a bit mask is faster.
140 Consider the case where one wants to test whether any of several bits
142 char trace_flags[MAX_TRACE_VALUES];
143 #define TRACE_FLAGS(t) ((t)->trace_flags)
145 /* Tracing output goes to this or stderr if NULL.
146 We can't store `stderr' here as stderr goes through a callback. */
148 #define TRACE_FILE(t) ((t)->trace_file)
150 /* Buffer to store the prefix to be printed before any trace line. */
151 char trace_prefix[256];
152 #define TRACE_PREFIX(t) ((t)->trace_prefix)
154 /* Buffer to save the inputs for the current instruction. Use a
155 union to force the buffer into correct alignment */
161 } trace_input_data[16];
162 unsigned8 trace_input_fmt[16];
163 unsigned8 trace_input_size[16];
165 #define TRACE_INPUT_DATA(t) ((t)->trace_input_data)
166 #define TRACE_INPUT_FMT(t) ((t)->trace_input_fmt)
167 #define TRACE_INPUT_SIZE(t) ((t)->trace_input_size)
168 #define TRACE_INPUT_IDX(t) ((t)->trace_input_idx)
170 /* Category of trace being performed */
172 #define TRACE_IDX(t) ((t)->trace_idx)
175 ??? Not all cpu's support this. */
177 #define TRACE_RANGE(t) (& (t)->range)
180 /* System tracing support. */
182 #define STATE_TRACE_FLAGS(sd) TRACE_FLAGS (STATE_TRACE_DATA (sd))
184 /* Return non-zero if tracing of IDX is enabled for non-cpu specific
185 components. The "S" in "STRACE" refers to "System". */
186 #define STRACE_P(sd,idx) \
187 ((WITH_TRACE & (1 << (idx))) != 0 \
188 && STATE_TRACE_FLAGS (sd)[idx] != 0)
190 /* Non-zero if --trace-<xxxx> was specified for SD. */
191 #define STRACE_DEBUG_P(sd) STRACE_P (sd, TRACE_DEBUG_IDX)
193 /* CPU tracing support. */
195 #define CPU_TRACE_FLAGS(cpu) TRACE_FLAGS (CPU_TRACE_DATA (cpu))
197 /* Return non-zero if tracing of IDX is enabled for CPU. */
198 #define TRACE_P(cpu,idx) \
199 ((WITH_TRACE & (1 << (idx))) != 0 \
200 && CPU_TRACE_FLAGS (cpu)[idx] != 0)
202 /* Non-zero if --trace-<xxxx> was specified for CPU. */
203 #define TRACE_ANY_P(cpu) ((WITH_TRACE) && (CPU_TRACE_DATA (cpu)->trace_any_p))
204 #define TRACE_INSN_P(cpu) TRACE_P (cpu, TRACE_INSN_IDX)
205 #define TRACE_DECODE_P(cpu) TRACE_P (cpu, TRACE_DECODE_IDX)
206 #define TRACE_EXTRACT_P(cpu) TRACE_P (cpu, TRACE_EXTRACT_IDX)
207 #define TRACE_LINENUM_P(cpu) TRACE_P (cpu, TRACE_LINENUM_IDX)
208 #define TRACE_MEMORY_P(cpu) TRACE_P (cpu, TRACE_MEMORY_IDX)
209 #define TRACE_MODEL_P(cpu) TRACE_P (cpu, TRACE_MODEL_IDX)
210 #define TRACE_ALU_P(cpu) TRACE_P (cpu, TRACE_ALU_IDX)
211 #define TRACE_CORE_P(cpu) TRACE_P (cpu, TRACE_CORE_IDX)
212 #define TRACE_EVENTS_P(cpu) TRACE_P (cpu, TRACE_EVENTS_IDX)
213 #define TRACE_FPU_P(cpu) TRACE_P (cpu, TRACE_FPU_IDX)
214 #define TRACE_BRANCH_P(cpu) TRACE_P (cpu, TRACE_BRANCH_IDX)
215 #define TRACE_DEBUG_P(cpu) TRACE_P (cpu, TRACE_DEBUG_IDX)
217 /* Traceing functions.
221 /* Prime the trace buffers ready for any trace output.
222 Must be called prior to any other trace operation */
223 extern void trace_prefix PARAMS ((SIM_DESC sd,
228 const char *file_name,
232 __attribute__((format (printf, 8, 9)));
234 /* Generic trace print, assumes trace_prefix() has been called */
236 extern void trace_generic PARAMS ((SIM_DESC sd,
241 __attribute__((format (printf, 4, 5)));
243 /* Trace a varying number of word sized inputs/outputs. trace_result*
244 must be called to close the trace operation. */
246 extern void trace_input0 PARAMS ((SIM_DESC sd,
250 extern void trace_input_word1 PARAMS ((SIM_DESC sd,
255 extern void trace_input_word2 PARAMS ((SIM_DESC sd,
261 extern void trace_input_word3 PARAMS ((SIM_DESC sd,
268 extern void trace_input_word4 PARAMS ((SIM_DESC sd,
276 extern void trace_input_addr1 PARAMS ((SIM_DESC sd,
281 extern void trace_input_bool1 PARAMS ((SIM_DESC sd,
286 extern void trace_input_fp1 PARAMS ((SIM_DESC sd,
291 extern void trace_input_fp2 PARAMS ((SIM_DESC sd,
297 extern void trace_input_fp3 PARAMS ((SIM_DESC sd,
304 extern void trace_input_fpu1 PARAMS ((SIM_DESC sd,
307 struct _sim_fpu *f0));
309 extern void trace_input_fpu2 PARAMS ((SIM_DESC sd,
313 struct _sim_fpu *f1));
315 extern void trace_input_fpu3 PARAMS ((SIM_DESC sd,
320 struct _sim_fpu *f2));
322 /* Other trace_input{_<fmt><nr-inputs>} functions can go here */
324 extern void trace_result0 PARAMS ((SIM_DESC sd,
328 extern void trace_result_word1 PARAMS ((SIM_DESC sd,
333 extern void trace_result_word2 PARAMS ((SIM_DESC sd,
339 extern void trace_result_word4 PARAMS ((SIM_DESC sd,
347 extern void trace_result_bool1 PARAMS ((SIM_DESC sd,
352 extern void trace_result_addr1 PARAMS ((SIM_DESC sd,
357 extern void trace_result_fp1 PARAMS ((SIM_DESC sd,
362 extern void trace_result_fp2 PARAMS ((SIM_DESC sd,
368 extern void trace_result_fpu1 PARAMS ((SIM_DESC sd,
371 struct _sim_fpu *f0));
373 extern void trace_result_string1 PARAMS ((SIM_DESC sd,
378 extern void trace_result_word1_string1 PARAMS ((SIM_DESC sd,
384 /* Other trace_result{_<type><nr-results>} */
387 /* Macro's for tracing ALU instructions */
389 #define TRACE_ALU_INPUT0() \
391 if (TRACE_ALU_P (CPU)) \
392 trace_input0 (SD, CPU, TRACE_ALU_IDX); \
395 #define TRACE_ALU_INPUT1(V0) \
397 if (TRACE_ALU_P (CPU)) \
398 trace_input_word1 (SD, CPU, TRACE_ALU_IDX, (V0)); \
401 #define TRACE_ALU_INPUT2(V0,V1) \
403 if (TRACE_ALU_P (CPU)) \
404 trace_input_word2 (SD, CPU, TRACE_ALU_IDX, (V0), (V1)); \
407 #define TRACE_ALU_INPUT3(V0,V1,V2) \
409 if (TRACE_ALU_P (CPU)) \
410 trace_input_word3 (SD, CPU, TRACE_ALU_IDX, (V0), (V1), (V2)); \
413 #define TRACE_ALU_INPUT4(V0,V1,V2,V3) \
415 if (TRACE_ALU_P (CPU)) \
416 trace_input_word4 (SD, CPU, TRACE_ALU_IDX, (V0), (V1), (V2), (V3)); \
419 #define TRACE_ALU_RESULT(R0) TRACE_ALU_RESULT1(R0)
421 #define TRACE_ALU_RESULT0() \
423 if (TRACE_ALU_P (CPU)) \
424 trace_result0 (SD, CPU, TRACE_ALU_IDX); \
427 #define TRACE_ALU_RESULT1(R0) \
429 if (TRACE_ALU_P (CPU)) \
430 trace_result_word1 (SD, CPU, TRACE_ALU_IDX, (R0)); \
433 #define TRACE_ALU_RESULT2(R0,R1) \
435 if (TRACE_ALU_P (CPU)) \
436 trace_result_word2 (SD, CPU, TRACE_ALU_IDX, (R0), (R1)); \
439 #define TRACE_ALU_RESULT4(R0,R1,R2,R3) \
441 if (TRACE_ALU_P (CPU)) \
442 trace_result_word4 (SD, CPU, TRACE_ALU_IDX, (R0), (R1), (R2), (R3)); \
446 /* Macro's for tracing FPU instructions */
448 #define TRACE_FP_INPUT0() \
450 if (TRACE_FPU_P (CPU)) \
451 trace_input0 (SD, CPU, TRACE_FPU_IDX); \
454 #define TRACE_FP_INPUT1(V0) \
456 if (TRACE_FPU_P (CPU)) \
457 trace_input_fp1 (SD, CPU, TRACE_FPU_IDX, (V0)); \
460 #define TRACE_FP_INPUT2(V0,V1) \
462 if (TRACE_FPU_P (CPU)) \
463 trace_input_fp2 (SD, CPU, TRACE_FPU_IDX, (V0), (V1)); \
466 #define TRACE_FP_INPUT3(V0,V1,V2) \
468 if (TRACE_FPU_P (CPU)) \
469 trace_input_fp3 (SD, CPU, TRACE_FPU_IDX, (V0), (V1), (V2)); \
472 #define TRACE_FP_INPUT_WORD1(V0) \
474 if (TRACE_FPU_P (CPU)) \
475 trace_input_word1 (SD, CPU, TRACE_FPU_IDX, (V0)); \
478 #define TRACE_FP_RESULT(R0) \
480 if (TRACE_FPU_P (CPU)) \
481 trace_result_fp1 (SD, CPU, TRACE_FPU_IDX, (R0)); \
484 #define TRACE_FP_RESULT2(R0,R1) \
486 if (TRACE_FPU_P (CPU)) \
487 trace_result_fp2 (SD, CPU, TRACE_FPU_IDX, (R0), (R1)); \
490 #define TRACE_FP_RESULT_BOOL(R0) \
492 if (TRACE_FPU_P (CPU)) \
493 trace_result_bool1 (SD, CPU, TRACE_FPU_IDX, (R0)); \
496 #define TRACE_FP_RESULT_WORD(R0) \
498 if (TRACE_FPU_P (CPU)) \
499 trace_result_word1 (SD, CPU, TRACE_FPU_IDX, (R0)); \
503 /* Macros for tracing branches */
505 #define TRACE_BRANCH_INPUT(COND) \
507 if (TRACE_BRANCH_P (CPU)) \
508 trace_input_bool1 (SD, CPU, TRACE_BRANCH_IDX, (COND)); \
511 #define TRACE_BRANCH_RESULT(DEST) \
513 if (TRACE_BRANCH_P (CPU)) \
514 trace_result_addr1 (SD, CPU, TRACE_BRANCH_IDX, (DEST)); \
518 /* The function trace_one_insn has been replaced by the function pair
519 trace_prefix() + trace_generic() */
520 extern void trace_one_insn PARAMS ((SIM_DESC sd,
524 const char *file_name,
529 __attribute__((format (printf, 8, 9)));
531 extern void trace_printf PARAMS ((SIM_DESC, sim_cpu *, const char *, ...))
532 __attribute__((format (printf, 3, 4)));
534 extern void trace_vprintf PARAMS ((SIM_DESC, sim_cpu *, const char *, va_list));
537 This is included here because there isn't enough of it to justify
540 /* Return non-zero if debugging of IDX for CPU is enabled. */
541 #define DEBUG_P(cpu, idx) \
542 ((WITH_DEBUG & (1 << (idx))) != 0 \
543 && CPU_DEBUG_FLAGS (cpu)[idx] != 0)
545 /* Non-zero if "--debug-insn" specified. */
546 #define DEBUG_INSN_P(cpu) DEBUG_P (cpu, DEBUG_INSN_IDX)
548 extern void debug_printf PARAMS ((sim_cpu *, const char *, ...))
549 __attribute__((format (printf, 2, 3)));
551 #endif /* SIM_TRACE_H */