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Re: AIX DWARF debugging sections
- From: David Edelsohn <dje dot gcc at gmail dot com>
- To: Joel Brobecker <brobecker at adacore dot com>
- Cc: Doug Evans <dje at google dot com>, Tristan Gingold <gingold at adacore dot com>, GDB Patches <gdb-patches at sourceware dot org>
- Date: Mon, 12 Oct 2015 13:41:54 -0400
- Subject: Re: AIX DWARF debugging sections
- Authentication-results: sourceware.org; auth=none
- References: <20151002213227 dot GA3602 at adacore dot com> <CAGWvnyk5YtqV=kjDa=MVJup7wdt2s=BdADAVAvg+D9rp9ihxfA at mail dot gmail dot com> <CADPb22RhyhWrxLu2vy-TOp7ua97BWBJ6Loa9puoSFiYZq82NBg at mail dot gmail dot com> <20151006165157 dot GA3341 at adacore dot com> <CAGWvnykS9J5cHfbDg4swVhXZdJ+Lzk7JQmikbPrXh2E4p-xshg at mail dot gmail dot com> <CADPb22Q1s4q7NCzUO5iLt0cT8ewH21RhmHTnyPh7AS=4nhFmsw at mail dot gmail dot com> <CAGWvnymgdDdzeKNDrjrwwTnO9dPrkcfJjOhJJn9RjGX_+BheJQ at mail dot gmail dot com> <20151010000433 dot GB3341 at adacore dot com> <CADPb22QmuPeP_QBDNWA4iSi1jsnTvAiAurV8HWGCAYnPoMr+wg at mail dot gmail dot com> <CAGWvnyn51SPQeHvS3xNmc+9J8VwXiL1d94uVR84z_=4EYwdF+Q at mail dot gmail dot com> <20151012155021 dot GC3341 at adacore dot com>
On Mon, Oct 12, 2015 at 11:50 AM, Joel Brobecker <brobecker@adacore.com> wrote:
>> AIX XLC apparently will not utilize .dwmac macro section until DWARF5
>> to encore the .debug_macro section, so GCC and GDB should utilize it
>> as .debug_macro and not produce or consume .debug_macinfo.
>
> OK, if macinfo data cannot be generated by XLC, then it would make
> sense to me to just ammend your patch to only update the .debug_macro
> entry. If that's correct, then that avoids the concern I had about
> having two entries with the same section name.
Appended is a revised patch that associates .dwmac with debug_macro.
I will revise GCC accordingly.
Thanks, David
* xcoffread (dwrf2_xcoff_names): Add .dwmac and .dwpbtyp.
diff --git a/gdb/xcoffread.c b/gdb/xcoffread.c
index 0d49751..5f27859 100644
--- a/gdb/xcoffread.c
+++ b/gdb/xcoffread.c
@@ -159,11 +159,11 @@ static const struct dwarf2_debug_sections dwarf2_xcoff_nam
es = {
{ ".dwabrev", NULL },
{ ".dwline", NULL },
{ ".dwloc", NULL },
- { NULL, NULL }, /* debug_macinfo */
- { NULL, NULL }, /* debug_macro */
+ { NULL, NULL }, /* XLC does not generate debug_macinfo for DWARF4 and below *
/
+ { ".dwmac", NULL }, /* debug_macro for DWARF5 and above */
{ ".dwstr", NULL },
{ ".dwrnges", NULL },
- { NULL, NULL }, /* debug_types */
+ { ".dwpbtyp", NULL },
{ NULL, NULL }, /* debug_addr */
{ ".dwframe", NULL },
{ NULL, NULL }, /* eh_frame */