1 /* symtab.h 2 3 Copyright (C) 2000-2020 Free Software Foundation, Inc. 4 5 This file is part of GNU Binutils. 6 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. 11 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. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 20 MA 02110-1301, USA. */ 21 22 #ifndef symtab_h 23 #define symtab_h 24 25 /* For a profile to be intelligible to a human user, it is necessary 26 to map code-addresses into source-code information. Source-code 27 information can be any combination of: (i) function-name, (ii) 28 source file-name, and (iii) source line number. 29 30 The symbol table is used to map addresses into source-code 31 information. */ 32 33 #define NBBS 10 34 35 /* Symbol-entry. For each external in the specified file we gather 36 its address, the number of calls and compute its share of cpu time. */ 37 typedef struct sym 38 { 39 /* Common information: 40 41 In the symbol-table, fields ADDR and FUNC_NAME are guaranteed 42 to contain valid information. FILE may be 0, if unknown and 43 LINE_NUM maybe 0 if unknown. */ 44 45 bfd_vma addr; /* Address of entry point. */ 46 bfd_vma end_addr; /* End-address. */ 47 const char *name; /* Name of function this sym is from. */ 48 Source_File *file; /* Source file symbol comes from. */ 49 int line_num; /* Source line number. */ 50 unsigned int /* Boolean fields: */ 51 is_func:1, /* Is this a function entry point? */ 52 is_static:1, /* Is this a local (static) symbol? */ 53 is_bb_head:1, /* Is this the head of a basic-blk? */ 54 mapped:1, /* This symbol was mapped to another name. */ 55 has_been_placed:1; /* Have we placed this symbol? */ 56 unsigned long ncalls; /* How many times executed */ 57 int nuses; /* How many times this symbol appears in 58 a particular context. */ 59 bfd_vma bb_addr[NBBS]; /* Address of basic-block start. */ 60 unsigned long bb_calls[NBBS];/* How many times basic-block was called. */ 61 struct sym *next; /* For building chains of syms. */ 62 struct sym *prev; /* For building chains of syms. */ 63 64 /* Profile specific information: */ 65 66 /* Histogram specific information: */ 67 struct 68 { 69 double time; /* (Weighted) ticks in this routine. */ 70 bfd_vma scaled_addr; /* Scaled entry point. */ 71 } 72 hist; 73 74 /* Call-graph specific information: */ 75 struct 76 { 77 unsigned long self_calls; /* How many calls to self. */ 78 double child_time; /* Cumulative ticks in children. */ 79 int index; /* Index in the graph list. */ 80 int top_order; /* Graph call chain top-sort order. */ 81 bfd_boolean print_flag; /* Should this be printed? */ 82 struct 83 { 84 double fract; /* What % of time propagates. */ 85 double self; /* How much self time propagates. */ 86 double child; /* How much child time propagates. */ 87 } 88 prop; 89 struct 90 { 91 int num; /* Internal number of cycle on. */ 92 struct sym *head; /* Head of cycle. */ 93 struct sym *next; /* Next member of cycle. */ 94 } 95 cyc; 96 struct arc *parents; /* List of caller arcs. */ 97 struct arc *children; /* List of callee arcs. */ 98 } 99 cg; 100 } 101 Sym; 102 103 /* Symbol-tables are always assumed to be sorted 104 in increasing order of addresses. */ 105 typedef struct 106 { 107 unsigned int len; /* # of symbols in this table. */ 108 Sym *base; /* First element in symbol table. */ 109 Sym *limit; /* Limit = base + len. */ 110 } 111 Sym_Table; 112 113 extern Sym_Table symtab; /* The symbol table. */ 114 115 extern void sym_init (Sym *); 116 extern void symtab_finalize (Sym_Table *); 117 #ifdef DEBUG 118 extern Sym *dbg_sym_lookup (Sym_Table *, bfd_vma); 119 #endif 120 extern Sym *sym_lookup (Sym_Table *, bfd_vma); 121 extern void find_call (Sym *, bfd_vma, bfd_vma); 122 123 #endif /* symtab_h */ 124