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Diffstat (limited to 'gprof/symtab.h')
-rw-r--r-- | gprof/symtab.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/gprof/symtab.h b/gprof/symtab.h new file mode 100644 index 0000000..a6a450e --- /dev/null +++ b/gprof/symtab.h @@ -0,0 +1,111 @@ +#ifndef symtab_h +#define symtab_h + +#include "bfd.h" +#include "gprof.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. + */ + +#include "source.h" + +#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 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 info: */ + struct + { + double time; /* (weighted) ticks in this routine */ + bfd_vma scaled_addr; /* scaled entry point */ + } + hist; + + /* call-graph specific info: */ + 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 */ + bool 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 PARAMS ((Sym * sym)); +extern void symtab_finalize PARAMS ((Sym_Table * symtab)); +extern Sym *sym_lookup PARAMS ((Sym_Table * symtab, bfd_vma address)); + +extern void find_call PARAMS ((Sym *, bfd_vma, bfd_vma)); + +#endif /* symtab_h */ |