From e0d153c69040bb37cbdf09deb52fee3013c07742 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Mon, 27 Jun 2011 16:27:27 +0900 Subject: perf-probe: Move dwarf library routines to dwarf-aux.{c, h} Move dwarf library related routines to dwarf-aux.{c,h}. This includes several minor changes. - Add simple documents for each API. - Rename die_find_real_subprogram() to die_find_realfunc() - Rename line_walk_handler_t to line_walk_callback_t. - Minor cleanups. Signed-off-by: Masami Hiramatsu Cc: Peter Zijlstra Cc: Frederic Weisbecker Cc: Paul Mackerras Cc: Ingo Molnar Cc: Arnaldo Carvalho de Melo Link: http://lkml.kernel.org/r/20110627072727.6528.57647.stgit@fedora15 Signed-off-by: Steven Rostedt --- tools/perf/util/dwarf-aux.h | 100 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 tools/perf/util/dwarf-aux.h (limited to 'tools/perf/util/dwarf-aux.h') diff --git a/tools/perf/util/dwarf-aux.h b/tools/perf/util/dwarf-aux.h new file mode 100644 index 000000000000..bc3b21167e70 --- /dev/null +++ b/tools/perf/util/dwarf-aux.h @@ -0,0 +1,100 @@ +#ifndef _DWARF_AUX_H +#define _DWARF_AUX_H +/* + * dwarf-aux.h : libdw auxiliary interfaces + * + * 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + */ + +#include +#include +#include +#include + +/* Find the realpath of the target file */ +extern const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname); + +/* Get DW_AT_comp_dir (should be NULL with older gcc) */ +extern const char *cu_get_comp_dir(Dwarf_Die *cu_die); + +/* Get a line number and file name for given address */ +extern int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr, + const char **fname, int *lineno); + +/* Compare diename and tname */ +extern bool die_compare_name(Dwarf_Die *dw_die, const char *tname); + +/* Get callsite line number of inline-function instance */ +extern int die_get_call_lineno(Dwarf_Die *in_die); + +/* Get type die */ +extern Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); + +/* Get a type die, but skip qualifiers and typedef */ +extern Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); + +/* Check whether the DIE is signed or not */ +extern bool die_is_signed_type(Dwarf_Die *tp_die); + +/* Get data_member_location offset */ +extern int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs); + +/* Return values for die_find_child() callbacks */ +enum { + DIE_FIND_CB_END = 0, /* End of Search */ + DIE_FIND_CB_CHILD = 1, /* Search only children */ + DIE_FIND_CB_SIBLING = 2, /* Search only siblings */ + DIE_FIND_CB_CONTINUE = 3, /* Search children and siblings */ +}; + +/* Search child DIEs */ +extern Dwarf_Die *die_find_child(Dwarf_Die *rt_die, + int (*callback)(Dwarf_Die *, void *), + void *data, Dwarf_Die *die_mem); + +/* Search a non-inlined function including given address */ +extern Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, + Dwarf_Die *die_mem); + +/* Search an inlined function including given address */ +extern Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, + Dwarf_Die *die_mem); + +/* Walker on lines (Note: line number will not be sorted) */ +typedef int (* line_walk_callback_t) (const char *fname, int lineno, + Dwarf_Addr addr, void *data); + +/* + * Walk on lines inside given DIE. If the DIE is a subprogram, walk only on + * the lines inside the subprogram, otherwise the DIE must be a CU DIE. + */ +extern int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, + void *data); + +/* Find a variable called 'name' at given address */ +extern Dwarf_Die *die_find_variable_at(Dwarf_Die *sp_die, const char *name, + Dwarf_Addr addr, Dwarf_Die *die_mem); + +/* Find a member called 'name' */ +extern Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name, + Dwarf_Die *die_mem); + +/* Get the name of given variable DIE */ +extern int die_get_typename(Dwarf_Die *vr_die, char *buf, int len); + +/* Get the name and type of given variable DIE, stored as "type\tname" */ +extern int die_get_varname(Dwarf_Die *vr_die, char *buf, int len); +#endif -- cgit v1.2.3-59-g8ed1b