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 */ 28 const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname); 29 30 /* Get DW_AT_comp_dir (should be NULL with older gcc) */ 31 const char *cu_get_comp_dir(Dwarf_Die *cu_die); 32 33 /* Get a line number and file name for given address */ 34 int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr, 35 const char **fname, int *lineno); 36 37 /* Walk on funcitons at given address */ 38 int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr, 39 int (*callback)(Dwarf_Die *, void *), void *data); 40 41 /* Get DW_AT_linkage_name (should be NULL for C binary) */ 42 const char *die_get_linkage_name(Dwarf_Die *dw_die); 43 44 /* Ensure that this DIE is a subprogram and definition (not declaration) */ 45 bool die_is_func_def(Dwarf_Die *dw_die); 46 47 /* Ensure that this DIE is an instance of a subprogram */ 48 bool die_is_func_instance(Dwarf_Die *dw_die); 49 50 /* Compare diename and tname */ 51 bool die_compare_name(Dwarf_Die *dw_die, const char *tname); 52 53 /* Matching diename with glob pattern */ 54 bool die_match_name(Dwarf_Die *dw_die, const char *glob); 55 56 /* Get callsite line number of inline-function instance */ 57 int die_get_call_lineno(Dwarf_Die *in_die); 58 59 /* Get callsite file name of inlined function instance */ 60 const char *die_get_call_file(Dwarf_Die *in_die); 61 62 /* Get type die */ 63 Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); 64 65 /* Get a type die, but skip qualifiers and typedef */ 66 Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); 67 68 /* Check whether the DIE is signed or not */ 69 bool die_is_signed_type(Dwarf_Die *tp_die); 70 71 /* Get data_member_location offset */ 72 int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs); 73 74 /* Return values for die_find_child() callbacks */ 75 enum { 76 DIE_FIND_CB_END = 0, /* End of Search */ 77 DIE_FIND_CB_CHILD = 1, /* Search only children */ 78 DIE_FIND_CB_SIBLING = 2, /* Search only siblings */ 79 DIE_FIND_CB_CONTINUE = 3, /* Search children and siblings */ 80 }; 81 82 /* Search child DIEs */ 83 Dwarf_Die *die_find_child(Dwarf_Die *rt_die, 84 int (*callback)(Dwarf_Die *, void *), 85 void *data, Dwarf_Die *die_mem); 86 87 /* Search a non-inlined function including given address */ 88 Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, 89 Dwarf_Die *die_mem); 90 91 /* Search a non-inlined function with tail call at given address */ 92 Dwarf_Die *die_find_tailfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, 93 Dwarf_Die *die_mem); 94 95 /* Search the top inlined function including given address */ 96 Dwarf_Die *die_find_top_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, 97 Dwarf_Die *die_mem); 98 99 /* Search the deepest inlined function including given address */ 100 Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, 101 Dwarf_Die *die_mem); 102 103 /* Walk on the instances of given DIE */ 104 int die_walk_instances(Dwarf_Die *in_die, 105 int (*callback)(Dwarf_Die *, void *), void *data); 106 107 /* Walker on lines (Note: line number will not be sorted) */ 108 typedef int (* line_walk_callback_t) (const char *fname, int lineno, 109 Dwarf_Addr addr, void *data); 110 111 /* 112 * Walk on lines inside given DIE. If the DIE is a subprogram, walk only on 113 * the lines inside the subprogram, otherwise the DIE must be a CU DIE. 114 */ 115 int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, void *data); 116 117 /* Find a variable called 'name' at given address */ 118 Dwarf_Die *die_find_variable_at(Dwarf_Die *sp_die, const char *name, 119 Dwarf_Addr addr, Dwarf_Die *die_mem); 120 121 /* Find a member called 'name' */ 122 Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name, 123 Dwarf_Die *die_mem); 124 125 /* Get the name of given variable DIE */ 126 int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf); 127 128 /* Get the name and type of given variable DIE, stored as "type\tname" */ 129 int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf); 130 int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, struct strbuf *buf); 131 132 /* Check if target program is compiled with optimization */ 133 bool die_is_optimized_target(Dwarf_Die *cu_die); 134 135 /* Use next address after prologue as probe location */ 136 void die_skip_prologue(Dwarf_Die *sp_die, Dwarf_Die *cu_die, 137 Dwarf_Addr *entrypc); 138 139 #endif 140
