124 lines
4.2 KiB
C
124 lines
4.2 KiB
C
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/* symtab.h
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Copyright (C) 2000-2022 Free Software Foundation, Inc.
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This file is part of GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef symtab_h
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#define symtab_h
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/* For a profile to be intelligible to a human user, it is necessary
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to map code-addresses into source-code information. Source-code
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information can be any combination of: (i) function-name, (ii)
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source file-name, and (iii) source line number.
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The symbol table is used to map addresses into source-code
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information. */
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#define NBBS 10
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/* Symbol-entry. For each external in the specified file we gather
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its address, the number of calls and compute its share of cpu time. */
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typedef struct sym
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{
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/* Common information:
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In the symbol-table, fields ADDR and FUNC_NAME are guaranteed
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to contain valid information. FILE may be 0, if unknown and
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LINE_NUM maybe 0 if unknown. */
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bfd_vma addr; /* Address of entry point. */
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bfd_vma end_addr; /* End-address. */
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const char *name; /* Name of function this sym is from. */
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Source_File *file; /* Source file symbol comes from. */
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int line_num; /* Source line number. */
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unsigned int /* Boolean fields: */
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is_func:1, /* Is this a function entry point? */
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is_static:1, /* Is this a local (static) symbol? */
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is_bb_head:1, /* Is this the head of a basic-blk? */
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mapped:1, /* This symbol was mapped to another name. */
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has_been_placed:1; /* Have we placed this symbol? */
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unsigned long ncalls; /* How many times executed */
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int nuses; /* How many times this symbol appears in
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a particular context. */
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bfd_vma bb_addr[NBBS]; /* Address of basic-block start. */
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unsigned long bb_calls[NBBS];/* How many times basic-block was called. */
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struct sym *next; /* For building chains of syms. */
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struct sym *prev; /* For building chains of syms. */
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/* Profile specific information: */
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/* Histogram specific information: */
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struct
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{
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double time; /* (Weighted) ticks in this routine. */
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bfd_vma scaled_addr; /* Scaled entry point. */
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}
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hist;
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/* Call-graph specific information: */
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struct
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{
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unsigned long self_calls; /* How many calls to self. */
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double child_time; /* Cumulative ticks in children. */
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int index; /* Index in the graph list. */
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int top_order; /* Graph call chain top-sort order. */
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bool print_flag; /* Should this be printed? */
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struct
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{
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double fract; /* What % of time propagates. */
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double self; /* How much self time propagates. */
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double child; /* How much child time propagates. */
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}
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prop;
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struct
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{
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int num; /* Internal number of cycle on. */
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struct sym *head; /* Head of cycle. */
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struct sym *next; /* Next member of cycle. */
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}
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cyc;
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struct arc *parents; /* List of caller arcs. */
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struct arc *children; /* List of callee arcs. */
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}
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cg;
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}
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Sym;
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/* Symbol-tables are always assumed to be sorted
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in increasing order of addresses. */
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typedef struct
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{
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unsigned int len; /* # of symbols in this table. */
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Sym *base; /* First element in symbol table. */
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Sym *limit; /* Limit = base + len. */
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}
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Sym_Table;
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extern Sym_Table symtab; /* The symbol table. */
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extern void sym_init (Sym *);
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extern void symtab_finalize (Sym_Table *);
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#ifdef DEBUG
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extern Sym *dbg_sym_lookup (Sym_Table *, bfd_vma);
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#endif
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extern Sym *sym_lookup (Sym_Table *, bfd_vma);
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extern void find_call (Sym *, bfd_vma, bfd_vma);
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#endif /* symtab_h */
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