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252b5132 RH |
1 | #include "cg_arcs.h" |
2 | #include "call_graph.h" | |
3 | #include "corefile.h" | |
4 | #include "gmon_io.h" | |
5 | #include "gmon_out.h" | |
6 | #include "symtab.h" | |
7 | #include "sym_ids.h" | |
8 | ||
9 | extern void | |
10 | DEFUN (cg_tally, (from_pc, self_pc, count), | |
11 | bfd_vma from_pc AND bfd_vma self_pc AND unsigned long count) | |
12 | { | |
13 | Sym *parent; | |
14 | Sym *child; | |
15 | ||
16 | parent = sym_lookup (&symtab, from_pc); | |
17 | child = sym_lookup (&symtab, self_pc); | |
18 | ||
19 | if (child == NULL || parent == NULL) | |
20 | return; | |
21 | ||
22 | /* If we're doing line-by-line profiling, both the parent and the | |
23 | child will probably point to line symbols instead of function | |
24 | symbols. For the parent this is fine, since this identifies the | |
25 | line number in the calling routing, but the child should always | |
26 | point to a function entry point, so we back up in the symbol | |
27 | table until we find it. | |
28 | ||
29 | For normal profiling, is_func will be set on all symbols, so this | |
30 | code will do nothing. */ | |
31 | ||
32 | while (child >= symtab.base && ! child->is_func) | |
33 | --child; | |
34 | ||
35 | if (child < symtab.base) | |
36 | return; | |
37 | ||
38 | /* | |
39 | * Keep arc if it is on INCL_ARCS table or if the INCL_ARCS table | |
40 | * is empty and it is not in the EXCL_ARCS table. | |
41 | */ | |
42 | if (sym_id_arc_is_present (&syms[INCL_ARCS], parent, child) | |
43 | || (syms[INCL_ARCS].len == 0 | |
44 | && !sym_id_arc_is_present (&syms[EXCL_ARCS], parent, child))) | |
45 | { | |
46 | child->ncalls += count; | |
47 | DBG (TALLYDEBUG, | |
48 | printf (_("[cg_tally] arc from %s to %s traversed %lu times\n"), | |
49 | parent->name, child->name, count)); | |
50 | arc_add (parent, child, count); | |
51 | } | |
52 | } | |
53 | ||
54 | ||
55 | /* | |
56 | * Read a record from file IFP describing an arc in the function | |
57 | * call-graph and the count of how many times the arc has been | |
58 | * traversed. FILENAME is the name of file IFP and is provided | |
59 | * for formatting error-messages only. | |
60 | */ | |
61 | void | |
62 | DEFUN (cg_read_rec, (ifp, filename), FILE * ifp AND CONST char *filename) | |
63 | { | |
64 | bfd_vma from_pc, self_pc; | |
65 | struct gmon_cg_arc_record arc; | |
66 | unsigned long count; | |
67 | ||
68 | if (fread (&arc, sizeof (arc), 1, ifp) != 1) | |
69 | { | |
70 | fprintf (stderr, _("%s: %s: unexpected end of file\n"), | |
71 | whoami, filename); | |
72 | done (1); | |
73 | } | |
74 | from_pc = get_vma (core_bfd, (bfd_byte *) arc.from_pc); | |
75 | self_pc = get_vma (core_bfd, (bfd_byte *) arc.self_pc); | |
76 | count = bfd_get_32 (core_bfd, (bfd_byte *) arc.count); | |
77 | DBG (SAMPLEDEBUG, | |
78 | printf ("[cg_read_rec] frompc 0x%lx selfpc 0x%lx count %lu\n", | |
fdcf7d43 | 79 | (unsigned long) from_pc, (unsigned long) self_pc, count)); |
252b5132 RH |
80 | /* add this arc: */ |
81 | cg_tally (from_pc, self_pc, count); | |
82 | } | |
83 | ||
84 | ||
85 | /* | |
86 | * Write all the arcs in the call-graph to file OFP. FILENAME is | |
87 | * the name of OFP and is provided for formatting error-messages | |
88 | * only. | |
89 | */ | |
90 | void | |
91 | DEFUN (cg_write_arcs, (ofp, filename), FILE * ofp AND const char *filename) | |
92 | { | |
93 | const unsigned char tag = GMON_TAG_CG_ARC; | |
94 | struct gmon_cg_arc_record raw_arc; | |
95 | Arc *arc; | |
96 | Sym *sym; | |
97 | ||
98 | for (sym = symtab.base; sym < symtab.limit; sym++) | |
99 | { | |
100 | for (arc = sym->cg.children; arc; arc = arc->next_child) | |
101 | { | |
102 | put_vma (core_bfd, arc->parent->addr, (bfd_byte *) raw_arc.from_pc); | |
103 | put_vma (core_bfd, arc->child->addr, (bfd_byte *) raw_arc.self_pc); | |
104 | bfd_put_32 (core_bfd, arc->count, (bfd_byte *) raw_arc.count); | |
105 | if (fwrite (&tag, sizeof (tag), 1, ofp) != 1 | |
106 | || fwrite (&raw_arc, sizeof (raw_arc), 1, ofp) != 1) | |
107 | { | |
108 | perror (filename); | |
109 | done (1); | |
110 | } | |
111 | DBG (SAMPLEDEBUG, | |
112 | printf ("[cg_write_arcs] frompc 0x%lx selfpc 0x%lx count %lu\n", | |
fdcf7d43 ILT |
113 | (unsigned long) arc->parent->addr, |
114 | (unsigned long) arc->child->addr, arc->count)); | |
252b5132 RH |
115 | } |
116 | } | |
117 | } |