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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/perf/util/dwarf-aux.h | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/util/dwarf-aux.h')
-rw-r--r-- | tools/perf/util/dwarf-aux.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/tools/perf/util/dwarf-aux.h b/tools/perf/util/dwarf-aux.h new file mode 100644 index 000000000..506006e0c --- /dev/null +++ b/tools/perf/util/dwarf-aux.h @@ -0,0 +1,130 @@ +/* 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 |