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1 /*
2    This file is part of Callgrind, a Valgrind tool for call graph
3    profiling programs.
4 
5    Copyright (C) 2002-2017, Josef Weidendorfer (Josef.Weidendorfer@gmx.de)
6 
7    This tool is derived from and contains lot of code from Cachegrind
8    Copyright (C) 2002-2017 Nicholas Nethercote (njn@valgrind.org)
9 
10    This program is free software; you can redistribute it and/or
11    modify it under the terms of the GNU General Public License as
12    published by the Free Software Foundation; either version 2 of the
13    License, or (at your option) any later version.
14 
15    This program is distributed in the hope that it will be useful, but
16    WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18    General Public License for more details.
19 
20    You should have received a copy of the GNU General Public License
21    along with this program; if not, write to the Free Software
22    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23    02111-1307, USA.
24 
25    The GNU General Public License is contained in the file COPYING.
26 */
27 
28 #include "config.h" // for VG_PREFIX
29 
30 #include "global.h"
31 
32 
33 
34 /*------------------------------------------------------------*/
35 /*--- Function specific configuration options              ---*/
36 /*------------------------------------------------------------*/
37 
38 /* Special value for separate_callers: automatic = adaptive */
39 #define CONFIG_AUTO    -1
40 
41 #define CONFIG_DEFAULT -1
42 #define CONFIG_FALSE    0
43 #define CONFIG_TRUE     1
44 
45 /* Logging configuration for a function */
46 struct _fn_config {
47     Int dump_before;
48     Int dump_after;
49     Int zero_before;
50     Int toggle_collect;
51 
52     Int skip;    /* Handle CALL to this function as JMP (= Skip)? */
53     Int group;   /* don't change caller dependency inside group !=0 */
54     Int pop_on_jump;
55 
56     Int separate_callers;    /* separate logging dependent on caller  */
57     Int separate_recursions; /* separate logging of rec. levels       */
58 
59 #if CLG_ENABLE_DEBUG
60     Int verbosity; /* Change debug verbosity level while in function */
61 #endif
62 };
63 
64 /* Configurations for function name prefix patterns.
65  * Currently, only very limit patterns are possible:
66  * Exact prefix patterns and "*::" are allowed.
67  * E.g.
68  *  - "abc" matches all functions starting with "abc".
69  *  - "abc*::def" matches all functions starting with "abc" and
70  *    starting with "def" after the first "::" separator.
71  *  - "*::print(" matches C++ methods "print" in all classes
72  *    without namespace. I.e. "*" doesn't match a "::".
73  *
74  * We build a trie from patterns, and for a given function, we
75  * go down the tree and apply all non-default configurations.
76  */
77 
78 
79 #define NODE_DEGREE 30
80 
81 /* node of compressed trie search structure */
82 typedef struct _config_node config_node;
83 struct _config_node {
84   Int length;
85 
86   fn_config* config;
87   config_node* sub_node[NODE_DEGREE];
88   config_node* next;
89   config_node* wild_star;
90   config_node* wild_char;
91 
92   HChar name[1];
93 };
94 
95 /* root of trie */
96 static config_node* fn_configs = 0;
97 
98 static __inline__
new_fnc(void)99 fn_config* new_fnc(void)
100 {
101    fn_config* fnc = (fn_config*) CLG_MALLOC("cl.clo.nf.1",
102                                             sizeof(fn_config));
103 
104    fnc->dump_before  = CONFIG_DEFAULT;
105    fnc->dump_after   = CONFIG_DEFAULT;
106    fnc->zero_before  = CONFIG_DEFAULT;
107    fnc->toggle_collect = CONFIG_DEFAULT;
108    fnc->skip         = CONFIG_DEFAULT;
109    fnc->pop_on_jump  = CONFIG_DEFAULT;
110    fnc->group        = CONFIG_DEFAULT;
111    fnc->separate_callers    = CONFIG_DEFAULT;
112    fnc->separate_recursions = CONFIG_DEFAULT;
113 
114 #if CLG_ENABLE_DEBUG
115    fnc->verbosity    = CONFIG_DEFAULT;
116 #endif
117 
118    return fnc;
119 }
120 
121 
new_config(const HChar * name,int length)122 static config_node* new_config(const HChar* name, int length)
123 {
124     int i;
125     config_node* node = (config_node*) CLG_MALLOC("cl.clo.nc.1",
126                                                   sizeof(config_node) + length);
127 
128     for(i=0;i<length;i++) {
129       if (name[i] == 0) break;
130       node->name[i] = name[i];
131     }
132     node->name[i] = 0;
133 
134     node->length = length;
135     node->config = 0;
136     for(i=0;i<NODE_DEGREE;i++)
137 	node->sub_node[i] = 0;
138     node->next = 0;
139     node->wild_char = 0;
140     node->wild_star = 0;
141 
142     CLG_DEBUG(3, "   new_config('%s', len %d)\n", node->name, length);
143 
144     return node;
145 }
146 
147 static __inline__
is_wild(HChar n)148 Bool is_wild(HChar n)
149 {
150   return (n == '*') || (n == '?');
151 }
152 
153 /* Recursively build up function matching tree (prefix tree).
154  * Returns function config object for pattern <name>
155  * and starting at tree node <*pnode>.
156  *
157  * Tree nodes (config_node) are created as needed,
158  * tree root is stored into <*pnode>, and the created
159  * leaf (fn_config) for the given pattern is returned.
160  */
get_fnc2(config_node * node,const HChar * name)161 static fn_config* get_fnc2(config_node* node, const HChar* name)
162 {
163   config_node *new_sub, *n, *nprev;
164   int offset, len;
165 
166   CLG_DEBUG(3, "  get_fnc2(%p, '%s')\n", node, name);
167 
168   if (name[0] == 0) {
169     if (!node->config) node->config = new_fnc();
170     return node->config;
171   }
172 
173   if (is_wild(*name)) {
174     if (*name == '*') {
175       while(name[1] == '*') name++;
176       new_sub = node->wild_star;
177     }
178     else
179       new_sub = node->wild_char;
180 
181     if (!new_sub) {
182       new_sub = new_config(name, 1);
183       if (*name == '*')
184 	node->wild_star = new_sub;
185       else
186 	node->wild_char = new_sub;
187     }
188 
189     return get_fnc2( new_sub, name+1);
190   }
191 
192   n = node->sub_node[ name[0]%NODE_DEGREE ];
193   nprev = 0;
194   len = 0;
195   while(n) {
196     for(len=0; name[len] == n->name[len]; len++);
197     if (len>0) break;
198     nprev = n;
199     n = n->next;
200   }
201 
202   if (!n) {
203     len = 1;
204     while(name[len] && (!is_wild(name[len]))) len++;
205     new_sub = new_config(name, len);
206     new_sub->next = node->sub_node[ name[0]%NODE_DEGREE ];
207     node->sub_node[ name[0]%NODE_DEGREE ] = new_sub;
208 
209     if (name[len] == 0) {
210       new_sub->config = new_fnc();
211       return new_sub->config;
212     }
213 
214     /* recurse on wildcard */
215     return get_fnc2( new_sub, name+len);
216   }
217 
218   if (len < n->length) {
219 
220     /* split up the subnode <n> */
221     config_node *new_node;
222     int i;
223 
224     new_node = new_config(n->name, len);
225     if (nprev)
226       nprev->next = new_node;
227     else
228       node->sub_node[ n->name[0]%NODE_DEGREE ] = new_node;
229     new_node->next = n->next;
230 
231     new_node->sub_node[ n->name[len]%NODE_DEGREE ] = n;
232 
233     for(i=0, offset=len; offset < n->length; i++, offset++)
234       n->name[i] = n->name[offset];
235     n->name[i] = 0;
236     n->length = i;
237 
238     name += len;
239     offset = 0;
240     while(name[offset] && (!is_wild(name[offset]))) offset++;
241     new_sub  = new_config(name, offset);
242     /* this sub_node of new_node could already be set: chain! */
243     new_sub->next = new_node->sub_node[ name[0]%NODE_DEGREE ];
244     new_node->sub_node[ name[0]%NODE_DEGREE ] = new_sub;
245 
246     if (name[offset]==0) {
247       new_sub->config = new_fnc();
248       return new_sub->config;
249     }
250 
251     /* recurse on wildcard */
252     return get_fnc2( new_sub, name+offset);
253   }
254 
255   name += n->length;
256 
257   if (name[0] == 0) {
258     /* name and node name are the same */
259     if (!n->config) n->config = new_fnc();
260     return n->config;
261   }
262 
263   offset = 1;
264   while(name[offset] && (!is_wild(name[offset]))) offset++;
265 
266   new_sub = new_config(name, offset);
267   new_sub->next = n->sub_node[ name[0]%NODE_DEGREE ];
268   n->sub_node[ name[0]%NODE_DEGREE ] = new_sub;
269 
270   return get_fnc2(new_sub, name+offset);
271 }
272 
print_config_node(int depth,int hash,config_node * node)273 static void print_config_node(int depth, int hash, config_node* node)
274 {
275   config_node* n;
276   int i;
277 
278   if (node != fn_configs) {
279     const HChar sp[] = "                                        ";
280 
281     if (depth>40) depth=40;
282     VG_(printf)("%s", sp+40-depth);
283     if (hash >=0) VG_(printf)(" [hash %2d]", hash);
284     else if (hash == -2) VG_(printf)(" [wildc ?]");
285     else if (hash == -3) VG_(printf)(" [wildc *]");
286     VG_(printf)(" '%s' (len %d)\n", node->name, node->length);
287   }
288   for(i=0;i<NODE_DEGREE;i++) {
289     n = node->sub_node[i];
290     while(n) {
291       print_config_node(depth+1, i, n);
292       n = n->next;
293     }
294   }
295   if (node->wild_char) print_config_node(depth+1, -2, node->wild_char);
296   if (node->wild_star) print_config_node(depth+1, -3, node->wild_star);
297 }
298 
299 /* get a function config for a name pattern (from command line) */
get_fnc(const HChar * name)300 static fn_config* get_fnc(const HChar* name)
301 {
302   fn_config* fnc;
303 
304   CLG_DEBUG(3, " +get_fnc(%s)\n", name);
305   if (fn_configs == 0)
306     fn_configs = new_config(name, 0);
307   fnc =  get_fnc2(fn_configs, name);
308 
309   CLG_DEBUGIF(3) {
310     CLG_DEBUG(3, " -get_fnc(%s):\n", name);
311     print_config_node(3, -1, fn_configs);
312   }
313   return fnc;
314 }
315 
316 
317 
update_fn_config1(fn_node * fn,fn_config * fnc)318 static void update_fn_config1(fn_node* fn, fn_config* fnc)
319 {
320     if (fnc->dump_before != CONFIG_DEFAULT)
321 	fn->dump_before = (fnc->dump_before == CONFIG_TRUE);
322 
323     if (fnc->dump_after != CONFIG_DEFAULT)
324 	fn->dump_after = (fnc->dump_after == CONFIG_TRUE);
325 
326     if (fnc->zero_before != CONFIG_DEFAULT)
327 	fn->zero_before = (fnc->zero_before == CONFIG_TRUE);
328 
329     if (fnc->toggle_collect != CONFIG_DEFAULT)
330 	fn->toggle_collect = (fnc->toggle_collect == CONFIG_TRUE);
331 
332     if (fnc->skip != CONFIG_DEFAULT)
333 	fn->skip = (fnc->skip == CONFIG_TRUE);
334 
335     if (fnc->pop_on_jump != CONFIG_DEFAULT)
336 	fn->pop_on_jump = (fnc->pop_on_jump == CONFIG_TRUE);
337 
338     if (fnc->group != CONFIG_DEFAULT)
339 	fn->group = fnc->group;
340 
341     if (fnc->separate_callers != CONFIG_DEFAULT)
342 	fn->separate_callers = fnc->separate_callers;
343 
344     if (fnc->separate_recursions != CONFIG_DEFAULT)
345 	fn->separate_recursions = fnc->separate_recursions;
346 
347 #if CLG_ENABLE_DEBUG
348     if (fnc->verbosity != CONFIG_DEFAULT)
349 	fn->verbosity = fnc->verbosity;
350 #endif
351 }
352 
353 /* Recursively go down the function matching tree,
354  * looking for a match to <name>. For every matching leaf,
355  * <fn> is updated with the pattern config.
356  */
update_fn_config2(fn_node * fn,const HChar * name,config_node * node)357 static void update_fn_config2(fn_node* fn, const HChar* name,
358                               config_node* node)
359 {
360     config_node* n;
361 
362     CLG_DEBUG(3, "  update_fn_config2('%s', node '%s'): \n",
363 	     name, node->name);
364     if ((*name == 0) && node->config) {
365       CLG_DEBUG(3, "   found!\n");
366       update_fn_config1(fn, node->config);
367       return;
368     }
369 
370     n = node->sub_node[ name[0]%NODE_DEGREE ];
371     while(n) {
372       if (VG_(strncmp)(name, n->name, n->length)==0) break;
373       n = n->next;
374     }
375     if (n) {
376 	CLG_DEBUG(3, "   '%s' matching at hash %d\n",
377 		  n->name, name[0]%NODE_DEGREE);
378 	update_fn_config2(fn, name+n->length, n);
379     }
380 
381     if (node->wild_char) {
382 	CLG_DEBUG(3, "   skip '%c' for wildcard '?'\n", *name);
383 	update_fn_config2(fn, name+1, node->wild_char);
384     }
385 
386     if (node->wild_star) {
387       CLG_DEBUG(3, "   wildcard '*'\n");
388       while(*name) {
389 	update_fn_config2(fn, name, node->wild_star);
390 	name++;
391       }
392       update_fn_config2(fn, name, node->wild_star);
393     }
394 }
395 
396 /* Update function config according to configs of name prefixes */
CLG_(update_fn_config)397 void CLG_(update_fn_config)(fn_node* fn)
398 {
399     CLG_DEBUG(3, "  update_fn_config('%s')\n", fn->name);
400     if (fn_configs)
401       update_fn_config2(fn, fn->name, fn_configs);
402 }
403 
404 
405 /*--------------------------------------------------------------------*/
406 /*--- Command line processing                                      ---*/
407 /*--------------------------------------------------------------------*/
408 
CLG_(process_cmd_line_option)409 Bool CLG_(process_cmd_line_option)(const HChar* arg)
410 {
411    const HChar* tmp_str;
412 
413    if      VG_BOOL_CLO(arg, "--skip-plt", CLG_(clo).skip_plt) {}
414 
415    else if VG_BOOL_CLO(arg, "--collect-jumps", CLG_(clo).collect_jumps) {}
416    /* compatibility alias, deprecated option */
417    else if VG_BOOL_CLO(arg, "--trace-jump",    CLG_(clo).collect_jumps) {}
418 
419    else if VG_BOOL_CLO(arg, "--combine-dumps", CLG_(clo).combine_dumps) {}
420 
421    else if VG_BOOL_CLO(arg, "--collect-atstart", CLG_(clo).collect_atstart) {}
422 
423    else if VG_BOOL_CLO(arg, "--instr-atstart", CLG_(clo).instrument_atstart) {}
424 
425    else if VG_BOOL_CLO(arg, "--separate-threads", CLG_(clo).separate_threads) {}
426 
427    else if VG_BOOL_CLO(arg, "--compress-strings", CLG_(clo).compress_strings) {}
428    else if VG_BOOL_CLO(arg, "--compress-mangled", CLG_(clo).compress_mangled) {}
429    else if VG_BOOL_CLO(arg, "--compress-pos",     CLG_(clo).compress_pos) {}
430 
431    else if VG_STR_CLO(arg, "--fn-skip", tmp_str) {
432        fn_config* fnc = get_fnc(tmp_str);
433        fnc->skip = CONFIG_TRUE;
434    }
435 
436    else if VG_STR_CLO(arg, "--dump-before", tmp_str) {
437        fn_config* fnc = get_fnc(tmp_str);
438        fnc->dump_before = CONFIG_TRUE;
439    }
440 
441    else if VG_STR_CLO(arg, "--zero-before", tmp_str) {
442        fn_config* fnc = get_fnc(tmp_str);
443        fnc->zero_before = CONFIG_TRUE;
444    }
445 
446    else if VG_STR_CLO(arg, "--dump-after", tmp_str) {
447        fn_config* fnc = get_fnc(tmp_str);
448        fnc->dump_after = CONFIG_TRUE;
449    }
450 
451    else if VG_STR_CLO(arg, "--toggle-collect", tmp_str) {
452        fn_config* fnc = get_fnc(tmp_str);
453        fnc->toggle_collect = CONFIG_TRUE;
454        /* defaults to initial collection off */
455        CLG_(clo).collect_atstart = False;
456    }
457 
458    else if VG_INT_CLO(arg, "--separate-recs", CLG_(clo).separate_recursions) {}
459 
460    /* change handling of a jump between functions to ret+call */
461    else if VG_XACT_CLO(arg, "--pop-on-jump", CLG_(clo).pop_on_jump, True) {}
462    else if VG_STR_CLO( arg, "--pop-on-jump", tmp_str) {
463        fn_config* fnc = get_fnc(tmp_str);
464        fnc->pop_on_jump = CONFIG_TRUE;
465    }
466 
467 #if CLG_ENABLE_DEBUG
468    else if VG_INT_CLO(arg, "--ct-verbose", CLG_(clo).verbose) {}
469    else if VG_INT_CLO(arg, "--ct-vstart",  CLG_(clo).verbose_start) {}
470 
471    else if VG_STREQN(12, arg, "--ct-verbose") {
472        fn_config* fnc;
473        HChar* s;
474        UInt n = VG_(strtoll10)(arg+12, &s);
475        if ((n <= 0) || *s != '=') return False;
476        fnc = get_fnc(s+1);
477        fnc->verbosity = n;
478    }
479 #endif
480 
481    else if VG_XACT_CLO(arg, "--separate-callers=auto",
482                             CLG_(clo).separate_callers, CONFIG_AUTO) {}
483    else if VG_INT_CLO( arg, "--separate-callers",
484                             CLG_(clo).separate_callers) {}
485 
486    else if VG_STREQN(10, arg, "--fn-group") {
487        fn_config* fnc;
488        HChar* s;
489        UInt n = VG_(strtoll10)(arg+10, &s);
490        if ((n <= 0) || *s != '=') return False;
491        fnc = get_fnc(s+1);
492        fnc->group = n;
493    }
494 
495    else if VG_STREQN(18, arg, "--separate-callers") {
496        fn_config* fnc;
497        HChar* s;
498        UInt n = VG_(strtoll10)(arg+18, &s);
499        if ((n <= 0) || *s != '=') return False;
500        fnc = get_fnc(s+1);
501        fnc->separate_callers = n;
502    }
503 
504    else if VG_STREQN(15, arg, "--separate-recs") {
505        fn_config* fnc;
506        HChar* s;
507        UInt n = VG_(strtoll10)(arg+15, &s);
508        if ((n <= 0) || *s != '=') return False;
509        fnc = get_fnc(s+1);
510        fnc->separate_recursions = n;
511    }
512 
513    else if VG_STR_CLO(arg, "--callgrind-out-file", CLG_(clo).out_format) {}
514 
515    else if VG_BOOL_CLO(arg, "--mangle-names", CLG_(clo).mangle_names) {}
516 
517    else if VG_BOOL_CLO(arg, "--skip-direct-rec",
518                             CLG_(clo).skip_direct_recursion) {}
519 
520    else if VG_BOOL_CLO(arg, "--dump-bbs",   CLG_(clo).dump_bbs) {}
521    else if VG_BOOL_CLO(arg, "--dump-line",  CLG_(clo).dump_line) {}
522    else if VG_BOOL_CLO(arg, "--dump-instr", CLG_(clo).dump_instr) {}
523    else if VG_BOOL_CLO(arg, "--dump-bb",    CLG_(clo).dump_bb) {}
524 
525    else if VG_INT_CLO( arg, "--dump-every-bb", CLG_(clo).dump_every_bb) {}
526 
527    else if VG_BOOL_CLO(arg, "--collect-alloc",   CLG_(clo).collect_alloc) {}
528    else if VG_BOOL_CLO(arg, "--collect-systime", CLG_(clo).collect_systime) {}
529    else if VG_BOOL_CLO(arg, "--collect-bus",     CLG_(clo).collect_bus) {}
530    /* for option compatibility with cachegrind */
531    else if VG_BOOL_CLO(arg, "--cache-sim",       CLG_(clo).simulate_cache) {}
532    /* compatibility alias, deprecated option */
533    else if VG_BOOL_CLO(arg, "--simulate-cache",  CLG_(clo).simulate_cache) {}
534    /* for option compatibility with cachegrind */
535    else if VG_BOOL_CLO(arg, "--branch-sim",      CLG_(clo).simulate_branch) {}
536    else {
537        Bool isCachesimOption = (*CLG_(cachesim).parse_opt)(arg);
538 
539        /* cache simulator is used if a simulator option is given */
540        if (isCachesimOption)
541 	   CLG_(clo).simulate_cache = True;
542 
543        return isCachesimOption;
544    }
545 
546    return True;
547 }
548 
CLG_(print_usage)549 void CLG_(print_usage)(void)
550 {
551    VG_(printf)(
552 "\n   dump creation options:\n"
553 "    --callgrind-out-file=<f>  Output file name [callgrind.out.%%p]\n"
554 "    --dump-line=no|yes        Dump source lines of costs? [yes]\n"
555 "    --dump-instr=no|yes       Dump instruction address of costs? [no]\n"
556 "    --compress-strings=no|yes Compress strings in profile dump? [yes]\n"
557 "    --compress-pos=no|yes     Compress positions in profile dump? [yes]\n"
558 "    --combine-dumps=no|yes    Concat all dumps into same file [no]\n"
559 #if CLG_EXPERIMENTAL
560 "    --compress-events=no|yes  Compress events in profile dump? [no]\n"
561 "    --dump-bb=no|yes          Dump basic block address of costs? [no]\n"
562 "    --dump-bbs=no|yes         Dump basic block info? [no]\n"
563 "    --dump-skipped=no|yes     Dump info on skipped functions in calls? [no]\n"
564 "    --mangle-names=no|yes     Mangle separation into names? [yes]\n"
565 #endif
566 
567 "\n   activity options (for interactivity use callgrind_control):\n"
568 "    --dump-every-bb=<count>   Dump every <count> basic blocks [0=never]\n"
569 "    --dump-before=<func>      Dump when entering function\n"
570 "    --zero-before=<func>      Zero all costs when entering function\n"
571 "    --dump-after=<func>       Dump when leaving function\n"
572 #if CLG_EXPERIMENTAL
573 "    --dump-objs=no|yes        Dump static object information [no]\n"
574 #endif
575 
576 "\n   data collection options:\n"
577 "    --instr-atstart=no|yes    Do instrumentation at callgrind start [yes]\n"
578 "    --collect-atstart=no|yes  Collect at process/thread start [yes]\n"
579 "    --toggle-collect=<func>   Toggle collection on enter/leave function\n"
580 "    --collect-jumps=no|yes    Collect jumps? [no]\n"
581 "    --collect-bus=no|yes      Collect global bus events? [no]\n"
582 #if CLG_EXPERIMENTAL
583 "    --collect-alloc=no|yes    Collect memory allocation info? [no]\n"
584 #endif
585 "    --collect-systime=no|yes  Collect system call time info? [no]\n"
586 
587 "\n   cost entity separation options:\n"
588 "    --separate-threads=no|yes Separate data per thread [no]\n"
589 "    --separate-callers=<n>    Separate functions by call chain length [0]\n"
590 "    --separate-callers<n>=<f> Separate <n> callers for function <f>\n"
591 "    --separate-recs=<n>       Separate function recursions up to level [2]\n"
592 "    --separate-recs<n>=<f>    Separate <n> recursions for function <f>\n"
593 "    --skip-plt=no|yes         Ignore calls to/from PLT sections? [yes]\n"
594 "    --skip-direct-rec=no|yes  Ignore direct recursions? [yes]\n"
595 "    --fn-skip=<function>      Ignore calls to/from function?\n"
596 #if CLG_EXPERIMENTAL
597 "    --fn-group<no>=<func>     Put function into separation group <no>\n"
598 #endif
599 "\n   simulation options:\n"
600 "    --branch-sim=no|yes       Do branch prediction simulation [no]\n"
601 "    --cache-sim=no|yes        Do cache simulation [no]\n"
602     );
603 
604    (*CLG_(cachesim).print_opts)();
605 
606 //   VG_(printf)("\n"
607 //	       "  For full callgrind documentation, see\n"
608 //	       "  "VG_PREFIX"/share/doc/callgrind/html/callgrind.html\n\n");
609 }
610 
CLG_(print_debug_usage)611 void CLG_(print_debug_usage)(void)
612 {
613     VG_(printf)(
614 
615 #if CLG_ENABLE_DEBUG
616 "    --ct-verbose=<level>       Verbosity of standard debug output [0]\n"
617 "    --ct-vstart=<BB number>    Only be verbose after basic block [0]\n"
618 "    --ct-verbose<level>=<func> Verbosity while in <func>\n"
619 #else
620 "    (none)\n"
621 #endif
622 
623     );
624 }
625 
626 
CLG_(set_clo_defaults)627 void CLG_(set_clo_defaults)(void)
628 {
629   /* Default values for command line arguments */
630 
631   /* dump options */
632   CLG_(clo).out_format       = 0;
633   CLG_(clo).combine_dumps    = False;
634   CLG_(clo).compress_strings = True;
635   CLG_(clo).compress_mangled = False;
636   CLG_(clo).compress_events  = False;
637   CLG_(clo).compress_pos     = True;
638   CLG_(clo).mangle_names     = True;
639   CLG_(clo).dump_line        = True;
640   CLG_(clo).dump_instr       = False;
641   CLG_(clo).dump_bb          = False;
642   CLG_(clo).dump_bbs         = False;
643 
644   CLG_(clo).dump_every_bb    = 0;
645 
646   /* Collection */
647   CLG_(clo).separate_threads = False;
648   CLG_(clo).collect_atstart  = True;
649   CLG_(clo).collect_jumps    = False;
650   CLG_(clo).collect_alloc    = False;
651   CLG_(clo).collect_systime  = False;
652   CLG_(clo).collect_bus      = False;
653 
654   CLG_(clo).skip_plt         = True;
655   CLG_(clo).separate_callers = 0;
656   CLG_(clo).separate_recursions = 2;
657   CLG_(clo).skip_direct_recursion = False;
658 
659   /* Instrumentation */
660   CLG_(clo).instrument_atstart = True;
661   CLG_(clo).simulate_cache = False;
662   CLG_(clo).simulate_branch = False;
663 
664   /* Call graph */
665   CLG_(clo).pop_on_jump = False;
666 
667 #if CLG_ENABLE_DEBUG
668   CLG_(clo).verbose = 0;
669   CLG_(clo).verbose_start = 0;
670 #endif
671 }
672