[Ltrace-devel] [PATCH] Add support for using elfutils as unwinder.

[Andreas Schwab]

Mark Wielaard <mjw at redhat.com> writes:

> @@ -880,6 +889,59 @@ proc_add_library(struct process *proc, struct library *lib)
>  	debug(DEBUG_PROCESS, "added library %s@%p (%s) to %d",
>  	      lib->soname, lib->base, lib->pathname, proc->pid);
>  
> +#if defined(HAVE_LIBDW)
> +	if (options.bt_depth > 0) {
> +		/* Setup module tracking for libdwfl unwinding.  */
> +		struct process *leader = proc->leader;
> +		Dwfl *dwfl = leader->dwfl;
> +		if (dwfl == NULL) {
> +			static const Dwfl_Callbacks proc_callbacks = {
> +				.find_elf = dwfl_linux_proc_find_elf,
> +				.find_debuginfo = dwfl_standard_find_debuginfo
> +			};
> +			dwfl = dwfl_begin(&proc_callbacks);
> +			if (dwfl == NULL)
> +				fprintf(stderr,
> +					"Couldn't initialize libdwfl unwinding "
> +					"for process %d: %s\n", leader->pid,
> +					dwfl_errmsg (-1));
> +		}
> +
> +		if (dwfl != NULL) {
> +			dwfl_report_begin_add(dwfl);
> +			if (dwfl_report_elf(dwfl, lib->soname,
> +					    lib->pathname, -1,
> +					    (GElf_Addr) lib->base,
> +					    false) == NULL)

proc.c: In function 'proc_add_library':
proc.c:944:6: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
      (GElf_Addr) lib->base,
      ^

Andreas.

-- 
Andreas Schwab, schwab at linux-m68k.org
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