1#ifndef _DWARF_AUX_H
  2#define _DWARF_AUX_H
  3/*
  4 * dwarf-aux.h : libdw auxiliary interfaces
  5 *
  6 * This program is free software; you can redistribute it and/or modify
  7 * it under the terms of the GNU General Public License as published by
  8 * the Free Software Foundation; either version 2 of the License, or
  9 * (at your option) any later version.
 10 *
 11 * This program is distributed in the hope that it will be useful,
 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14 * GNU General Public License for more details.
 15 *
 16 * You should have received a copy of the GNU General Public License
 17 * along with this program; if not, write to the Free Software
 18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 19 *
 20 */
 21
 22#include <dwarf.h>
 23#include <elfutils/libdw.h>
 24#include <elfutils/libdwfl.h>
 25#include <elfutils/version.h>
 26
 
 
 27/* Find the realpath of the target file */
 28const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname);
 29
 30/* Get DW_AT_comp_dir (should be NULL with older gcc) */
 31const char *cu_get_comp_dir(Dwarf_Die *cu_die);
 32
 33/* Get a line number and file name for given address */
 34int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr,
 35		     const char **fname, int *lineno);
 36
 37/* Walk on funcitons at given address */
 38int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr,
 39			 int (*callback)(Dwarf_Die *, void *), void *data);
 40
 
 
 
 41/* Ensure that this DIE is a subprogram and definition (not declaration) */
 42bool die_is_func_def(Dwarf_Die *dw_die);
 43
 44/* Ensure that this DIE is an instance of a subprogram */
 45bool die_is_func_instance(Dwarf_Die *dw_die);
 46
 47/* Compare diename and tname */
 48bool die_compare_name(Dwarf_Die *dw_die, const char *tname);
 49
 50/* Matching diename with glob pattern */
 51bool die_match_name(Dwarf_Die *dw_die, const char *glob);
 52
 53/* Get callsite line number of inline-function instance */
 54int die_get_call_lineno(Dwarf_Die *in_die);
 55
 56/* Get callsite file name of inlined function instance */
 57const char *die_get_call_file(Dwarf_Die *in_die);
 58
 59/* Get type die */
 60Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
 61
 62/* Get a type die, but skip qualifiers and typedef */
 63Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
 64
 65/* Check whether the DIE is signed or not */
 66bool die_is_signed_type(Dwarf_Die *tp_die);
 67
 68/* Get data_member_location offset */
 69int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs);
 70
 71/* Return values for die_find_child() callbacks */
 72enum {
 73	DIE_FIND_CB_END = 0,		/* End of Search */
 74	DIE_FIND_CB_CHILD = 1,		/* Search only children */
 75	DIE_FIND_CB_SIBLING = 2,	/* Search only siblings */
 76	DIE_FIND_CB_CONTINUE = 3,	/* Search children and siblings */
 77};
 78
 79/* Search child DIEs */
 80Dwarf_Die *die_find_child(Dwarf_Die *rt_die,
 81			 int (*callback)(Dwarf_Die *, void *),
 82			 void *data, Dwarf_Die *die_mem);
 83
 84/* Search a non-inlined function including given address */
 85Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr,
 86			     Dwarf_Die *die_mem);
 87
 88/* Search a non-inlined function with tail call at given address */
 89Dwarf_Die *die_find_tailfunc(Dwarf_Die *cu_die, Dwarf_Addr addr,
 90				    Dwarf_Die *die_mem);
 91
 92/* Search the top inlined function including given address */
 93Dwarf_Die *die_find_top_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr,
 94				   Dwarf_Die *die_mem);
 95
 96/* Search the deepest inlined function including given address */
 97Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr,
 98			       Dwarf_Die *die_mem);
 99
100/* Walk on the instances of given DIE */
101int die_walk_instances(Dwarf_Die *in_die,
102		       int (*callback)(Dwarf_Die *, void *), void *data);
103
104/* Walker on lines (Note: line number will not be sorted) */
105typedef int (* line_walk_callback_t) (const char *fname, int lineno,
106				      Dwarf_Addr addr, void *data);
107
108/*
109 * Walk on lines inside given DIE. If the DIE is a subprogram, walk only on
110 * the lines inside the subprogram, otherwise the DIE must be a CU DIE.
111 */
112int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, void *data);
113
114/* Find a variable called 'name' at given address */
115Dwarf_Die *die_find_variable_at(Dwarf_Die *sp_die, const char *name,
116				Dwarf_Addr addr, Dwarf_Die *die_mem);
117
118/* Find a member called 'name' */
119Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name,
120			   Dwarf_Die *die_mem);
121
122/* Get the name of given variable DIE */
123int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf);
124
125/* Get the name and type of given variable DIE, stored as "type\tname" */
126int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf);
127int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, struct strbuf *buf);
 
 
 
 
 
 
 
 
128#endif

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2#ifndef _DWARF_AUX_H
  3#define _DWARF_AUX_H
  4/*
  5 * dwarf-aux.h : libdw auxiliary interfaces
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  6 */
  7
  8#include <dwarf.h>
  9#include <elfutils/libdw.h>
 10#include <elfutils/libdwfl.h>
 11#include <elfutils/version.h>
 12
 13struct strbuf;
 14
 15/* Find the realpath of the target file */
 16const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname);
 17
 18/* Get DW_AT_comp_dir (should be NULL with older gcc) */
 19const char *cu_get_comp_dir(Dwarf_Die *cu_die);
 20
 21/* Get a line number and file name for given address */
 22int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr,
 23		     const char **fname, int *lineno);
 24
 25/* Walk on funcitons at given address */
 26int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr,
 27			 int (*callback)(Dwarf_Die *, void *), void *data);
 28
 29/* Get DW_AT_linkage_name (should be NULL for C binary) */
 30const char *die_get_linkage_name(Dwarf_Die *dw_die);
 31
 32/* Ensure that this DIE is a subprogram and definition (not declaration) */
 33bool die_is_func_def(Dwarf_Die *dw_die);
 34
 35/* Ensure that this DIE is an instance of a subprogram */
 36bool die_is_func_instance(Dwarf_Die *dw_die);
 37
 38/* Compare diename and tname */
 39bool die_compare_name(Dwarf_Die *dw_die, const char *tname);
 40
 41/* Matching diename with glob pattern */
 42bool die_match_name(Dwarf_Die *dw_die, const char *glob);
 43
 44/* Get callsite line number of inline-function instance */
 45int die_get_call_lineno(Dwarf_Die *in_die);
 46
 47/* Get callsite file name of inlined function instance */
 48const char *die_get_call_file(Dwarf_Die *in_die);
 49
 50/* Get type die */
 51Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
 52
 53/* Get a type die, but skip qualifiers and typedef */
 54Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
 55
 56/* Check whether the DIE is signed or not */
 57bool die_is_signed_type(Dwarf_Die *tp_die);
 58
 59/* Get data_member_location offset */
 60int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs);
 61
 62/* Return values for die_find_child() callbacks */
 63enum {
 64	DIE_FIND_CB_END = 0,		/* End of Search */
 65	DIE_FIND_CB_CHILD = 1,		/* Search only children */
 66	DIE_FIND_CB_SIBLING = 2,	/* Search only siblings */
 67	DIE_FIND_CB_CONTINUE = 3,	/* Search children and siblings */
 68};
 69
 70/* Search child DIEs */
 71Dwarf_Die *die_find_child(Dwarf_Die *rt_die,
 72			 int (*callback)(Dwarf_Die *, void *),
 73			 void *data, Dwarf_Die *die_mem);
 74
 75/* Search a non-inlined function including given address */
 76Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr,
 77			     Dwarf_Die *die_mem);
 78
 79/* Search a non-inlined function with tail call at given address */
 80Dwarf_Die *die_find_tailfunc(Dwarf_Die *cu_die, Dwarf_Addr addr,
 81				    Dwarf_Die *die_mem);
 82
 83/* Search the top inlined function including given address */
 84Dwarf_Die *die_find_top_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr,
 85				   Dwarf_Die *die_mem);
 86
 87/* Search the deepest inlined function including given address */
 88Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr,
 89			       Dwarf_Die *die_mem);
 90
 91/* Walk on the instances of given DIE */
 92int die_walk_instances(Dwarf_Die *in_die,
 93		       int (*callback)(Dwarf_Die *, void *), void *data);
 94
 95/* Walker on lines (Note: line number will not be sorted) */
 96typedef int (* line_walk_callback_t) (const char *fname, int lineno,
 97				      Dwarf_Addr addr, void *data);
 98
 99/*
100 * Walk on lines inside given DIE. If the DIE is a subprogram, walk only on
101 * the lines inside the subprogram, otherwise the DIE must be a CU DIE.
102 */
103int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, void *data);
104
105/* Find a variable called 'name' at given address */
106Dwarf_Die *die_find_variable_at(Dwarf_Die *sp_die, const char *name,
107				Dwarf_Addr addr, Dwarf_Die *die_mem);
108
109/* Find a member called 'name' */
110Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name,
111			   Dwarf_Die *die_mem);
112
113/* Get the name of given variable DIE */
114int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf);
115
116/* Get the name and type of given variable DIE, stored as "type\tname" */
117int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf);
118int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, struct strbuf *buf);
119
120/* Check if target program is compiled with optimization */
121bool die_is_optimized_target(Dwarf_Die *cu_die);
122
123/* Use next address after prologue as probe location */
124void die_skip_prologue(Dwarf_Die *sp_die, Dwarf_Die *cu_die,
125		       Dwarf_Addr *entrypc);
126
127#endif