| 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", |
| 79 | from_pc, self_pc, count)); |
| 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", |
| 113 | arc->parent->addr, arc->child->addr, arc->count)); |
| 114 | } |
| 115 | } |
| 116 | } |