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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | /* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef _DWARF_AUX_H #define _DWARF_AUX_H /* * dwarf-aux.h : libdw auxiliary interfaces */ #include <dwarf.h> #include <elfutils/libdw.h> #include <elfutils/libdwfl.h> #include <elfutils/version.h> struct strbuf; /* Find the realpath of the target file */ const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname); /* Get DW_AT_comp_dir (should be NULL with older gcc) */ const char *cu_get_comp_dir(Dwarf_Die *cu_die); /* Get a line number and file name for given address */ int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr, const char **fname, int *lineno); /* Walk on funcitons at given address */ int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr, int (*callback)(Dwarf_Die *, void *), void *data); /* Get DW_AT_linkage_name (should be NULL for C binary) */ const char *die_get_linkage_name(Dwarf_Die *dw_die); /* Get the lowest PC in DIE (including range list) */ int die_entrypc(Dwarf_Die *dw_die, Dwarf_Addr *addr); /* Ensure that this DIE is a subprogram and definition (not declaration) */ bool die_is_func_def(Dwarf_Die *dw_die); /* Ensure that this DIE is an instance of a subprogram */ bool die_is_func_instance(Dwarf_Die *dw_die); /* Compare diename and tname */ bool die_compare_name(Dwarf_Die *dw_die, const char *tname); /* Matching diename with glob pattern */ bool die_match_name(Dwarf_Die *dw_die, const char *glob); /* Get callsite line number of inline-function instance */ int die_get_call_lineno(Dwarf_Die *in_die); /* Get callsite file name of inlined function instance */ const char *die_get_call_file(Dwarf_Die *in_die); /* Get type die */ Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); /* Get a type die, but skip qualifiers and typedef */ Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); /* Check whether the DIE is signed or not */ bool die_is_signed_type(Dwarf_Die *tp_die); /* Get data_member_location offset */ 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 */ 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 */ Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, Dwarf_Die *die_mem); /* Search a non-inlined function with tail call at given address */ Dwarf_Die *die_find_tailfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, Dwarf_Die *die_mem); /* Search the top inlined function including given address */ Dwarf_Die *die_find_top_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, Dwarf_Die *die_mem); /* Search the deepest inlined function including given address */ Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, Dwarf_Die *die_mem); /* Walk on the instances of given DIE */ int die_walk_instances(Dwarf_Die *in_die, int (*callback)(Dwarf_Die *, void *), void *data); /* 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. */ int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, void *data); /* Find a variable called 'name' at given address */ 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' */ Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name, Dwarf_Die *die_mem); /* Get the name of given variable DIE */ int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf); /* Get the name and type of given variable DIE, stored as "type\tname" */ int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf); int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, struct strbuf *buf); /* Check if target program is compiled with optimization */ bool die_is_optimized_target(Dwarf_Die *cu_die); /* Use next address after prologue as probe location */ void die_skip_prologue(Dwarf_Die *sp_die, Dwarf_Die *cu_die, Dwarf_Addr *entrypc); #endif |