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/* symtab.h
Copyright (C) 2000-2021 Free Software Foundation, Inc.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifndef symtab_h
#define symtab_h
/* For a profile to be intelligible to a human user, it is necessary
to map code-addresses into source-code information. Source-code
information can be any combination of: (i) function-name, (ii)
source file-name, and (iii) source line number.
The symbol table is used to map addresses into source-code
information. */
#define NBBS 10
/* Symbol-entry. For each external in the specified file we gather
its address, the number of calls and compute its share of cpu time. */
typedef struct sym
{
/* Common information:
In the symbol-table, fields ADDR and FUNC_NAME are guaranteed
to contain valid information. FILE may be 0, if unknown and
LINE_NUM maybe 0 if unknown. */
bfd_vma addr; /* Address of entry point. */
bfd_vma end_addr; /* End-address. */
const char *name; /* Name of function this sym is from. */
Source_File *file; /* Source file symbol comes from. */
int line_num; /* Source line number. */
unsigned int /* Boolean fields: */
is_func:1, /* Is this a function entry point? */
is_static:1, /* Is this a local (static) symbol? */
is_bb_head:1, /* Is this the head of a basic-blk? */
mapped:1, /* This symbol was mapped to another name. */
has_been_placed:1; /* Have we placed this symbol? */
unsigned long ncalls; /* How many times executed */
int nuses; /* How many times this symbol appears in
a particular context. */
bfd_vma bb_addr[NBBS]; /* Address of basic-block start. */
unsigned long bb_calls[NBBS];/* How many times basic-block was called. */
struct sym *next; /* For building chains of syms. */
struct sym *prev; /* For building chains of syms. */
/* Profile specific information: */
/* Histogram specific information: */
struct
{
double time; /* (Weighted) ticks in this routine. */
bfd_vma scaled_addr; /* Scaled entry point. */
}
hist;
/* Call-graph specific information: */
struct
{
unsigned long self_calls; /* How many calls to self. */
double child_time; /* Cumulative ticks in children. */
int index; /* Index in the graph list. */
int top_order; /* Graph call chain top-sort order. */
bfd_boolean print_flag; /* Should this be printed? */
struct
{
double fract; /* What % of time propagates. */
double self; /* How much self time propagates. */
double child; /* How much child time propagates. */
}
prop;
struct
{
int num; /* Internal number of cycle on. */
struct sym *head; /* Head of cycle. */
struct sym *next; /* Next member of cycle. */
}
cyc;
struct arc *parents; /* List of caller arcs. */
struct arc *children; /* List of callee arcs. */
}
cg;
}
Sym;
/* Symbol-tables are always assumed to be sorted
in increasing order of addresses. */
typedef struct
{
unsigned int len; /* # of symbols in this table. */
Sym *base; /* First element in symbol table. */
Sym *limit; /* Limit = base + len. */
}
Sym_Table;
extern Sym_Table symtab; /* The symbol table. */
extern void sym_init (Sym *);
extern void symtab_finalize (Sym_Table *);
#ifdef DEBUG
extern Sym *dbg_sym_lookup (Sym_Table *, bfd_vma);
#endif
extern Sym *sym_lookup (Sym_Table *, bfd_vma);
extern void find_call (Sym *, bfd_vma, bfd_vma);
#endif /* symtab_h */
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