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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
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From: Keith Seitz <keiths@redhat.com>
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Date: Fri, 11 Jan 2019 17:02:18 -0500
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Subject: gdb-rhbz1187581-power8-regs-not-in-8.2-13of15.patch
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;; [PowerPC] Reject tdescs with VSX and no FPU or Altivec
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;; Pedro Franco de Carvalho, RH BZ 1187581
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[PowerPC] Reject tdescs with VSX and no FPU or Altivec
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Currently rs6000_gdbarch_init will accept a tdesc with the
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"org.gnu.gdb.power.vsx" feature but without the
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"org.gnu.gdb.power.altivec" or "org.gnu.gdb.power.fpu".
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It isn't clear from the standard features documentation that these are
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requirements. However, these tdescs would cause trouble in the VSX
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pseudo-register functions, so this patch will cause them to be
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rejected.
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gdb/ChangeLog:
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2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
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* rs6000-tdep.c (rs6000_gdbarch_init): Reject tdescs with vsx but
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without altivec or fpu.
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diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
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--- a/gdb/rs6000-tdep.c
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+++ b/gdb/rs6000-tdep.c
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@@ -6096,7 +6096,8 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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valid_p &= tdesc_numbered_register (feature, tdesc_data,
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PPC_VSR0_UPPER_REGNUM + i,
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vsx_regs[i]);
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- if (!valid_p)
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+
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+ if (!valid_p || !have_fpu || !have_altivec)
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{
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tdesc_data_cleanup (tdesc_data);
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return NULL;
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