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libbacktrace: use ELF symbol table if no debug info available

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PR libbacktrace/97080
	* fileline.c (backtrace_syminfo_to_full_callback): New function.
	(backtrace_syminfo_to_full_error_callback): New function.
	* elf.c (elf_nodebug): Call syminfo_fn if possible.
	* internal.h (struct backtrace_call_full): Define.
	(backtrace_syminfo_to_full_callback): Declare.
	(backtrace_syminfo_to_full_error_callback): Declare.
	* mtest.c (f3): Only check all[i] if data.index permits.
This commit is contained in:
Ian Lance Taylor
2020-09-16 17:03:52 -07:00
parent 753968c2e8
commit c8a81d4e3a
4 changed files with 115 additions and 39 deletions
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25
internal.h
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@@ -326,6 +326,31 @@ extern int backtrace_dwarf_add (struct backtrace_state *state,
void *data, fileline *fileline_fn,
struct dwarf_data **fileline_entry);
/* A data structure to pass to backtrace_syminfo_to_full. */
struct backtrace_call_full
{
backtrace_full_callback full_callback;
backtrace_error_callback full_error_callback;
void *full_data;
int ret;
};
/* A backtrace_syminfo_callback that can call into a
backtrace_full_callback, used when we have a symbol table but no
debug info. */
extern void backtrace_syminfo_to_full_callback (void *data, uintptr_t pc,
const char *symname,
uintptr_t symval,
uintptr_t symsize);
/* An error callback that corresponds to
backtrace_syminfo_to_full_callback. */
extern void backtrace_syminfo_to_full_error_callback (void *, const char *,
int);
/* A test-only hook for elf_uncompress_zdebug. */
extern int backtrace_uncompress_zdebug (struct backtrace_state *,