1 /* Simulator tracing/debugging support.
2 Copyright (C) 1997-2015 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 3 of the License, or
10 (at your option) any later version.
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
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* This file is meant to be included by sim-basics.h. */
25 /* Standard traceable entities. */
28 /* Trace insn execution. */
31 /* Trace insn decoding.
32 ??? This is more of a simulator debugging operation and might best be
33 moved to --debug-decode. */
36 /* Trace insn extraction.
37 ??? This is more of a simulator debugging operation and might best be
38 moved to --debug-extract. */
41 /* Trace insn execution but include line numbers. */
44 /* Trace memory operations.
45 The difference between this and TRACE_CORE_IDX is (I think) that this
46 is intended to apply to a higher level. TRACE_CORE_IDX applies to the
47 low level core operations. */
50 /* Include model performance data in tracing output. */
53 /* Trace ALU (Arithmetic Logic Unit) operations. */
56 /* Trace memory core operations. */
62 /* Trace FPU (Floating Point Unit) operations. */
65 /* Trace VPU (Vector Processing Unit) operations. */
68 /* Trace branching. */
74 /* Add information useful for debugging the simulator to trace output. */
77 /* Simulator specific trace bits begin here. */
81 /* Maximum number of traceable entities. */
82 #ifndef MAX_TRACE_VALUES
83 #define MAX_TRACE_VALUES 32
86 /* The -t option only prints useful values. It's easy to type and shouldn't
87 splat on the screen everything under the sun making nothing easy to
89 #define TRACE_USEFUL_MASK \
90 (TRACE_insn | TRACE_linenum | TRACE_memory | TRACE_model)
92 /* Masks so WITH_TRACE can have symbolic values.
93 The case choice here is on purpose. The lowercase parts are args to
95 #define TRACE_insn (1 << TRACE_INSN_IDX)
96 #define TRACE_decode (1 << TRACE_DECODE_IDX)
97 #define TRACE_extract (1 << TRACE_EXTRACT_IDX)
98 #define TRACE_linenum (1 << TRACE_LINENUM_IDX)
99 #define TRACE_memory (1 << TRACE_MEMORY_IDX)
100 #define TRACE_model (1 << TRACE_MODEL_IDX)
101 #define TRACE_alu (1 << TRACE_ALU_IDX)
102 #define TRACE_core (1 << TRACE_CORE_IDX)
103 #define TRACE_events (1 << TRACE_EVENTS_IDX)
104 #define TRACE_fpu (1 << TRACE_FPU_IDX)
105 #define TRACE_vpu (1 << TRACE_VPU_IDX)
106 #define TRACE_branch (1 << TRACE_BRANCH_IDX)
107 #define TRACE_syscall (1 << TRACE_SYSCALL_IDX)
108 #define TRACE_debug (1 << TRACE_DEBUG_IDX)
110 /* Return non-zero if tracing of idx is enabled (compiled in). */
111 #define WITH_TRACE_P(idx) (WITH_TRACE & (1 << idx))
113 /* Preprocessor macros to simplify tests of WITH_TRACE. */
114 #define WITH_TRACE_ANY_P (WITH_TRACE)
115 #define WITH_TRACE_INSN_P WITH_TRACE_P (TRACE_INSN_IDX)
116 #define WITH_TRACE_DECODE_P WITH_TRACE_P (TRACE_DECODE_IDX)
117 #define WITH_TRACE_EXTRACT_P WITH_TRACE_P (TRACE_EXTRACT_IDX)
118 #define WITH_TRACE_LINENUM_P WITH_TRACE_P (TRACE_LINENUM_IDX)
119 #define WITH_TRACE_MEMORY_P WITH_TRACE_P (TRACE_MEMORY_IDX)
120 #define WITH_TRACE_MODEL_P WITH_TRACE_P (TRACE_MODEL_IDX)
121 #define WITH_TRACE_ALU_P WITH_TRACE_P (TRACE_ALU_IDX)
122 #define WITH_TRACE_CORE_P WITH_TRACE_P (TRACE_CORE_IDX)
123 #define WITH_TRACE_EVENTS_P WITH_TRACE_P (TRACE_EVENTS_IDX)
124 #define WITH_TRACE_FPU_P WITH_TRACE_P (TRACE_FPU_IDX)
125 #define WITH_TRACE_VPU_P WITH_TRACE_P (TRACE_VPU_IDX)
126 #define WITH_TRACE_BRANCH_P WITH_TRACE_P (TRACE_BRANCH_IDX)
127 #define WITH_TRACE_SYSCALL_P WITH_TRACE_P (TRACE_SYSCALL_IDX)
128 #define WITH_TRACE_DEBUG_P WITH_TRACE_P (TRACE_DEBUG_IDX)
130 /* Tracing install handler. */
131 MODULE_INSTALL_FN trace_install;
133 /* Struct containing all system and cpu trace data.
135 System trace data is stored with the associated module.
136 System and cpu tracing must share the same space of bitmasks as they
137 are arguments to --with-trace. One could have --with-trace and
138 --with-cpu-trace or some such but that's an over-complication at this point
139 in time. Also, there may be occasions where system and cpu tracing may
140 wish to share a name. */
142 typedef struct _trace_data {
144 /* Global summary of all the current trace options */
147 /* Boolean array of specified tracing flags. */
148 /* ??? It's not clear that using an array vs a bit mask is faster.
149 Consider the case where one wants to test whether any of several bits
151 char trace_flags[MAX_TRACE_VALUES];
152 #define TRACE_FLAGS(t) ((t)->trace_flags)
154 /* Tracing output goes to this or stderr if NULL.
155 We can't store `stderr' here as stderr goes through a callback. */
157 #define TRACE_FILE(t) ((t)->trace_file)
159 /* Buffer to store the prefix to be printed before any trace line. */
160 char trace_prefix[256];
161 #define TRACE_PREFIX(t) ((t)->trace_prefix)
163 /* Buffer to save the inputs for the current instruction. Use a
164 union to force the buffer into correct alignment */
170 } trace_input_data[16];
171 unsigned8 trace_input_fmt[16];
172 unsigned8 trace_input_size[16];
174 #define TRACE_INPUT_DATA(t) ((t)->trace_input_data)
175 #define TRACE_INPUT_FMT(t) ((t)->trace_input_fmt)
176 #define TRACE_INPUT_SIZE(t) ((t)->trace_input_size)
177 #define TRACE_INPUT_IDX(t) ((t)->trace_input_idx)
179 /* Category of trace being performed */
181 #define TRACE_IDX(t) ((t)->trace_idx)
184 ??? Not all cpu's support this. */
186 #define TRACE_RANGE(t) (& (t)->range)
189 /* System tracing support. */
191 #define STATE_TRACE_FLAGS(sd) TRACE_FLAGS (STATE_TRACE_DATA (sd))
193 /* Return non-zero if tracing of IDX is enabled for non-cpu specific
194 components. The "S" in "STRACE" refers to "System". */
195 #define STRACE_P(sd,idx) \
196 (WITH_TRACE_P (idx) && STATE_TRACE_FLAGS (sd)[idx] != 0)
198 /* Non-zero if --trace-<xxxx> was specified for SD. */
199 #define STRACE_ANY_P(sd) (WITH_TRACE_ANY_P && (STATE_TRACE_DATA (sd)->trace_any_p))
200 #define STRACE_INSN_P(sd) STRACE_P (sd, TRACE_INSN_IDX)
201 #define STRACE_DECODE_P(sd) STRACE_P (sd, TRACE_DECODE_IDX)
202 #define STRACE_EXTRACT_P(sd) STRACE_P (sd, TRACE_EXTRACT_IDX)
203 #define STRACE_LINENUM_P(sd) STRACE_P (sd, TRACE_LINENUM_IDX)
204 #define STRACE_MEMORY_P(sd) STRACE_P (sd, TRACE_MEMORY_IDX)
205 #define STRACE_MODEL_P(sd) STRACE_P (sd, TRACE_MODEL_IDX)
206 #define STRACE_ALU_P(sd) STRACE_P (sd, TRACE_ALU_IDX)
207 #define STRACE_CORE_P(sd) STRACE_P (sd, TRACE_CORE_IDX)
208 #define STRACE_EVENTS_P(sd) STRACE_P (sd, TRACE_EVENTS_IDX)
209 #define STRACE_FPU_P(sd) STRACE_P (sd, TRACE_FPU_IDX)
210 #define STRACE_VPU_P(sd) STRACE_P (sd, TRACE_VPU_IDX)
211 #define STRACE_BRANCH_P(sd) STRACE_P (sd, TRACE_BRANCH_IDX)
212 #define STRACE_SYSCALL_P(sd) STRACE_P (sd, TRACE_SYSCALL_IDX)
213 #define STRACE_DEBUG_P(sd) STRACE_P (sd, TRACE_DEBUG_IDX)
215 /* Helper functions for printing messages. */
216 #define STRACE(sd, idx, fmt, args...) \
218 if (STRACE_P (sd, idx)) \
219 trace_generic (sd, NULL, idx, fmt, ## args); \
221 #define STRACE_INSN(sd, fmt, args...) STRACE (sd, TRACE_INSN_IDX, fmt, ## args)
222 #define STRACE_DECODE(sd, fmt, args...) STRACE (sd, TRACE_DECODE_IDX, fmt, ## args)
223 #define STRACE_EXTRACT(sd, fmt, args...) STRACE (sd, TRACE_EXTRACT_IDX, fmt, ## args)
224 #define STRACE_LINENUM(sd, fmt, args...) STRACE (sd, TRACE_LINENUM_IDX, fmt, ## args)
225 #define STRACE_MEMORY(sd, fmt, args...) STRACE (sd, TRACE_MEMORY_IDX, fmt, ## args)
226 #define STRACE_MODEL(sd, fmt, args...) STRACE (sd, TRACE_MODEL_IDX, fmt, ## args)
227 #define STRACE_ALU(sd, fmt, args...) STRACE (sd, TRACE_ALU_IDX, fmt, ## args)
228 #define STRACE_CORE(sd, fmt, args...) STRACE (sd, TRACE_CORE_IDX, fmt, ## args)
229 #define STRACE_EVENTS(sd, fmt, args...) STRACE (sd, TRACE_EVENTS_IDX, fmt, ## args)
230 #define STRACE_FPU(sd, fmt, args...) STRACE (sd, TRACE_FPU_IDX, fmt, ## args)
231 #define STRACE_VPU(sd, fmt, args...) STRACE (sd, TRACE_VPU_IDX, fmt, ## args)
232 #define STRACE_BRANCH(sd, fmt, args...) STRACE (sd, TRACE_BRANCH_IDX, fmt, ## args)
233 #define STRACE_SYSCALL(sd, fmt, args...) STRACE (sd, TRACE_SYSCALL_IDX, fmt, ## args)
234 #define STRACE_DEBUG(sd, fmt, args...) STRACE (sd, TRACE_DEBUG_IDX, fmt, ## args)
236 /* CPU tracing support. */
238 #define CPU_TRACE_FLAGS(cpu) TRACE_FLAGS (CPU_TRACE_DATA (cpu))
240 /* Return non-zero if tracing of IDX is enabled for CPU. */
241 #define TRACE_P(cpu,idx) \
242 (WITH_TRACE_P (idx) && CPU_TRACE_FLAGS (cpu)[idx] != 0)
244 /* Non-zero if --trace-<xxxx> was specified for CPU. */
245 #define TRACE_ANY_P(cpu) (WITH_TRACE_ANY_P && (CPU_TRACE_DATA (cpu)->trace_any_p))
246 #define TRACE_INSN_P(cpu) TRACE_P (cpu, TRACE_INSN_IDX)
247 #define TRACE_DECODE_P(cpu) TRACE_P (cpu, TRACE_DECODE_IDX)
248 #define TRACE_EXTRACT_P(cpu) TRACE_P (cpu, TRACE_EXTRACT_IDX)
249 #define TRACE_LINENUM_P(cpu) TRACE_P (cpu, TRACE_LINENUM_IDX)
250 #define TRACE_MEMORY_P(cpu) TRACE_P (cpu, TRACE_MEMORY_IDX)
251 #define TRACE_MODEL_P(cpu) TRACE_P (cpu, TRACE_MODEL_IDX)
252 #define TRACE_ALU_P(cpu) TRACE_P (cpu, TRACE_ALU_IDX)
253 #define TRACE_CORE_P(cpu) TRACE_P (cpu, TRACE_CORE_IDX)
254 #define TRACE_EVENTS_P(cpu) TRACE_P (cpu, TRACE_EVENTS_IDX)
255 #define TRACE_FPU_P(cpu) TRACE_P (cpu, TRACE_FPU_IDX)
256 #define TRACE_VPU_P(cpu) TRACE_P (cpu, TRACE_VPU_IDX)
257 #define TRACE_BRANCH_P(cpu) TRACE_P (cpu, TRACE_BRANCH_IDX)
258 #define TRACE_SYSCALL_P(cpu) TRACE_P (cpu, TRACE_SYSCALL_IDX)
259 #define TRACE_DEBUG_P(cpu) TRACE_P (cpu, TRACE_DEBUG_IDX)
261 /* Helper functions for printing messages. */
262 #define TRACE(cpu, idx, fmt, args...) \
264 if (TRACE_P (cpu, idx)) \
265 trace_generic (CPU_STATE (cpu), cpu, idx, fmt, ## args); \
267 #define TRACE_INSN(cpu, fmt, args...) TRACE (cpu, TRACE_INSN_IDX, fmt, ## args)
268 #define TRACE_DECODE(cpu, fmt, args...) TRACE (cpu, TRACE_DECODE_IDX, fmt, ## args)
269 #define TRACE_EXTRACT(cpu, fmt, args...) TRACE (cpu, TRACE_EXTRACT_IDX, fmt, ## args)
270 #define TRACE_LINENUM(cpu, fmt, args...) TRACE (cpu, TRACE_LINENUM_IDX, fmt, ## args)
271 #define TRACE_MEMORY(cpu, fmt, args...) TRACE (cpu, TRACE_MEMORY_IDX, fmt, ## args)
272 #define TRACE_MODEL(cpu, fmt, args...) TRACE (cpu, TRACE_MODEL_IDX, fmt, ## args)
273 #define TRACE_ALU(cpu, fmt, args...) TRACE (cpu, TRACE_ALU_IDX, fmt, ## args)
274 #define TRACE_CORE(cpu, fmt, args...) TRACE (cpu, TRACE_CORE_IDX, fmt, ## args)
275 #define TRACE_EVENTS(cpu, fmt, args...) TRACE (cpu, TRACE_EVENTS_IDX, fmt, ## args)
276 #define TRACE_FPU(cpu, fmt, args...) TRACE (cpu, TRACE_FPU_IDX, fmt, ## args)
277 #define TRACE_VPU(cpu, fmt, args...) TRACE (cpu, TRACE_VPU_IDX, fmt, ## args)
278 #define TRACE_BRANCH(cpu, fmt, args...) TRACE (cpu, TRACE_BRANCH_IDX, fmt, ## args)
279 #define TRACE_SYSCALL(cpu, fmt, args...) TRACE (cpu, TRACE_SYSCALL_IDX, fmt, ## args)
280 #define TRACE_DEBUG(cpu, fmt, args...) TRACE (cpu, TRACE_DEBUG_IDX, fmt, ## args)
282 /* Tracing functions. */
284 /* Prime the trace buffers ready for any trace output.
285 Must be called prior to any other trace operation */
286 extern void trace_prefix (SIM_DESC sd,
291 const char *file_name,
295 __attribute__((format (printf, 8, 9)));
297 /* Generic trace print, assumes trace_prefix() has been called */
299 extern void trace_generic (SIM_DESC sd,
304 __attribute__((format (printf, 4, 5)));
314 trace_fmt_instruction_incomplete,
317 /* Trace a varying number of word sized inputs/outputs. trace_result*
318 must be called to close the trace operation. */
320 extern void save_data (SIM_DESC sd,
326 extern void trace_input0 (SIM_DESC sd,
330 extern void trace_input_word1 (SIM_DESC sd,
335 extern void trace_input_word2 (SIM_DESC sd,
341 extern void trace_input_word3 (SIM_DESC sd,
348 extern void trace_input_word4 (SIM_DESC sd,
356 extern void trace_input_addr1 (SIM_DESC sd,
361 extern void trace_input_bool1 (SIM_DESC sd,
366 extern void trace_input_fp1 (SIM_DESC sd,
371 extern void trace_input_fp2 (SIM_DESC sd,
377 extern void trace_input_fp3 (SIM_DESC sd,
384 extern void trace_input_fpu1 (SIM_DESC sd,
387 struct _sim_fpu *f0);
389 extern void trace_input_fpu2 (SIM_DESC sd,
393 struct _sim_fpu *f1);
395 extern void trace_input_fpu3 (SIM_DESC sd,
400 struct _sim_fpu *f2);
402 /* Other trace_input{_<fmt><nr-inputs>} functions can go here */
404 extern void trace_result0 (SIM_DESC sd,
408 extern void trace_result_word1 (SIM_DESC sd,
413 extern void trace_result_word2 (SIM_DESC sd,
419 extern void trace_result_word4 (SIM_DESC sd,
427 extern void trace_result_bool1 (SIM_DESC sd,
432 extern void trace_result_addr1 (SIM_DESC sd,
437 extern void trace_result_fp1 (SIM_DESC sd,
442 extern void trace_result_fp2 (SIM_DESC sd,
448 extern void trace_result_fpu1 (SIM_DESC sd,
451 struct _sim_fpu *f0);
453 extern void trace_result_string1 (SIM_DESC sd,
458 extern void trace_result_word1_string1 (SIM_DESC sd,
464 /* Other trace_result{_<type><nr-results>} */
467 /* Macros for tracing ALU instructions */
469 #define TRACE_ALU_INPUT0() \
471 if (TRACE_ALU_P (CPU)) \
472 trace_input0 (SD, CPU, TRACE_ALU_IDX); \
475 #define TRACE_ALU_INPUT1(V0) \
477 if (TRACE_ALU_P (CPU)) \
478 trace_input_word1 (SD, CPU, TRACE_ALU_IDX, (V0)); \
481 #define TRACE_ALU_INPUT2(V0,V1) \
483 if (TRACE_ALU_P (CPU)) \
484 trace_input_word2 (SD, CPU, TRACE_ALU_IDX, (V0), (V1)); \
487 #define TRACE_ALU_INPUT3(V0,V1,V2) \
489 if (TRACE_ALU_P (CPU)) \
490 trace_input_word3 (SD, CPU, TRACE_ALU_IDX, (V0), (V1), (V2)); \
493 #define TRACE_ALU_INPUT4(V0,V1,V2,V3) \
495 if (TRACE_ALU_P (CPU)) \
496 trace_input_word4 (SD, CPU, TRACE_ALU_IDX, (V0), (V1), (V2), (V3)); \
499 #define TRACE_ALU_RESULT(R0) TRACE_ALU_RESULT1(R0)
501 #define TRACE_ALU_RESULT0() \
503 if (TRACE_ALU_P (CPU)) \
504 trace_result0 (SD, CPU, TRACE_ALU_IDX); \
507 #define TRACE_ALU_RESULT1(R0) \
509 if (TRACE_ALU_P (CPU)) \
510 trace_result_word1 (SD, CPU, TRACE_ALU_IDX, (R0)); \
513 #define TRACE_ALU_RESULT2(R0,R1) \
515 if (TRACE_ALU_P (CPU)) \
516 trace_result_word2 (SD, CPU, TRACE_ALU_IDX, (R0), (R1)); \
519 #define TRACE_ALU_RESULT4(R0,R1,R2,R3) \
521 if (TRACE_ALU_P (CPU)) \
522 trace_result_word4 (SD, CPU, TRACE_ALU_IDX, (R0), (R1), (R2), (R3)); \
525 /* Macros for tracing inputs to comparative branch instructions. */
527 #define TRACE_BRANCH_INPUT1(V0) \
529 if (TRACE_BRANCH_P (CPU)) \
530 trace_input_word1 (SD, CPU, TRACE_BRANCH_IDX, (V0)); \
533 #define TRACE_BRANCH_INPUT2(V0,V1) \
535 if (TRACE_BRANCH_P (CPU)) \
536 trace_input_word2 (SD, CPU, TRACE_BRANCH_IDX, (V0), (V1)); \
539 /* Macros for tracing FPU instructions */
541 #define TRACE_FP_INPUT0() \
543 if (TRACE_FPU_P (CPU)) \
544 trace_input0 (SD, CPU, TRACE_FPU_IDX); \
547 #define TRACE_FP_INPUT1(V0) \
549 if (TRACE_FPU_P (CPU)) \
550 trace_input_fp1 (SD, CPU, TRACE_FPU_IDX, (V0)); \
553 #define TRACE_FP_INPUT2(V0,V1) \
555 if (TRACE_FPU_P (CPU)) \
556 trace_input_fp2 (SD, CPU, TRACE_FPU_IDX, (V0), (V1)); \
559 #define TRACE_FP_INPUT3(V0,V1,V2) \
561 if (TRACE_FPU_P (CPU)) \
562 trace_input_fp3 (SD, CPU, TRACE_FPU_IDX, (V0), (V1), (V2)); \
565 #define TRACE_FP_INPUT_WORD1(V0) \
567 if (TRACE_FPU_P (CPU)) \
568 trace_input_word1 (SD, CPU, TRACE_FPU_IDX, (V0)); \
571 #define TRACE_FP_RESULT(R0) \
573 if (TRACE_FPU_P (CPU)) \
574 trace_result_fp1 (SD, CPU, TRACE_FPU_IDX, (R0)); \
577 #define TRACE_FP_RESULT2(R0,R1) \
579 if (TRACE_FPU_P (CPU)) \
580 trace_result_fp2 (SD, CPU, TRACE_FPU_IDX, (R0), (R1)); \
583 #define TRACE_FP_RESULT_BOOL(R0) \
585 if (TRACE_FPU_P (CPU)) \
586 trace_result_bool1 (SD, CPU, TRACE_FPU_IDX, (R0)); \
589 #define TRACE_FP_RESULT_WORD(R0) \
591 if (TRACE_FPU_P (CPU)) \
592 trace_result_word1 (SD, CPU, TRACE_FPU_IDX, (R0)); \
596 /* Macros for tracing branches */
598 #define TRACE_BRANCH_INPUT(COND) \
600 if (TRACE_BRANCH_P (CPU)) \
601 trace_input_bool1 (SD, CPU, TRACE_BRANCH_IDX, (COND)); \
604 #define TRACE_BRANCH_RESULT(DEST) \
606 if (TRACE_BRANCH_P (CPU)) \
607 trace_result_addr1 (SD, CPU, TRACE_BRANCH_IDX, (DEST)); \
611 /* The function trace_one_insn has been replaced by the function pair
612 trace_prefix() + trace_generic() */
613 extern void trace_one_insn (SIM_DESC sd,
617 const char *file_name,
622 __attribute__((format (printf, 8, 9)));
624 extern void trace_printf (SIM_DESC, sim_cpu *, const char *, ...)
625 __attribute__((format (printf, 3, 4)));
627 extern void trace_vprintf (SIM_DESC, sim_cpu *, const char *, va_list);
630 This is included here because there isn't enough of it to justify
633 /* Return non-zero if debugging of IDX for CPU is enabled. */
634 #define DEBUG_P(cpu, idx) \
635 ((WITH_DEBUG & (1 << (idx))) != 0 \
636 && CPU_DEBUG_FLAGS (cpu)[idx] != 0)
638 /* Non-zero if "--debug-insn" specified. */
639 #define DEBUG_INSN_P(cpu) DEBUG_P (cpu, DEBUG_INSN_IDX)
641 /* GDB also has a debug_printf, so we shadow ours. */
642 #define debug_printf sim_debug_printf
644 extern void debug_printf (sim_cpu *, const char *, ...)
645 __attribute__((format (printf, 2, 3)));
647 #endif /* SIM_TRACE_H */