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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
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From: Fedora GDB patches <invalid@email.com>
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Date: Fri, 27 Oct 2017 21:07:50 +0200
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Subject: gdb-7.2.50-sparc-add-workaround-to-broken-debug-files.patch
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;; Toolchain on sparc is slightly broken and debuginfo files are generated
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;; with non 64bit aligned tables/offsets.
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;; See for example readelf -S ../Xvnc.debug.
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;;
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;; As a consenquence calculation of sectp->filepos as used in
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;; dwarf2_read_section (gdb/dwarf2read.c:1525) will return a non aligned buffer
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;; that cannot be used directly as done with MMAP.
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;; Usage will result in a BusError.
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;;
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;; While we figure out what's wrong in the toolchain and do a full archive
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;; rebuild to fix it, we need to be able to use gdb :)
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;;=push
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diff --git a/gdb/gdb_bfd.c b/gdb/gdb_bfd.c
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--- a/gdb/gdb_bfd.c
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+++ b/gdb/gdb_bfd.c
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@@ -24,12 +24,14 @@
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#include "hashtab.h"
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#include "filestuff.h"
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#include "vec.h"
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+#ifndef __sparc__
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#ifdef HAVE_MMAP
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#include <sys/mman.h>
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#ifndef MAP_FAILED
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#define MAP_FAILED ((void *) -1)
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#endif
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#endif
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+#endif
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#include "target.h"
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#include "gdb/fileio.h"
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#include "inferior.h"
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@@ -484,6 +486,7 @@ free_one_bfd_section (bfd *abfd, asection *sectp, void *ignore)
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if (sect != NULL && sect->data != NULL)
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{
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+#ifndef __sparc__
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#ifdef HAVE_MMAP
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if (sect->map_addr != NULL)
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{
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@@ -493,6 +496,7 @@ free_one_bfd_section (bfd *abfd, asection *sectp, void *ignore)
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gdb_assert (res == 0);
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}
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else
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+#endif
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#endif
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xfree (sect->data);
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}
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@@ -659,6 +663,7 @@ gdb_bfd_map_section (asection *sectp, bfd_size_type *size)
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if (descriptor->data != NULL)
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goto done;
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+#ifndef __sparc__
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#ifdef HAVE_MMAP
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if (!bfd_is_section_compressed (abfd, sectp))
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{
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@@ -693,6 +698,7 @@ gdb_bfd_map_section (asection *sectp, bfd_size_type *size)
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}
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}
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#endif /* HAVE_MMAP */
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+#endif
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/* Handle compressed sections, or ordinary uncompressed sections in
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the no-mmap case. */
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