111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
#ifndef symtab_h
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#define symtab_h
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#include "bfd.h"
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#include "gprof.h"
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/*
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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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*
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* The symbol table is used to map addresses into source-code
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* information.
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*/
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#include "source.h"
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#define NBBS 10
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/*
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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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*/
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typedef struct sym
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{
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/*
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* Common information:
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*
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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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*/
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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 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 info: */
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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 info: */
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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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/*
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* Symbol-tables are always assumed to be sorted in increasing order
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* of addresses:
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*/
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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 PARAMS ((Sym * sym));
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extern void symtab_finalize PARAMS ((Sym_Table * symtab));
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extern Sym *sym_lookup PARAMS ((Sym_Table * symtab, bfd_vma address));
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extern void find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
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#endif /* symtab_h */
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