[binutils-gdb] [PowerPC] Reject tdescs with VSX and no FPU or Altivec

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT 81ab84fd6cdaab121988e0c424f8cdc0ae472e14 ***

Author: Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
Branch: master
Commit: 81ab84fd6cdaab121988e0c424f8cdc0ae472e14

[PowerPC] Reject tdescs with VSX and no FPU or Altivec

Currently rs6000_gdbarch_init will accept a tdesc with the
"org.gnu.gdb.power.vsx" feature but without the
"org.gnu.gdb.power.altivec" or "org.gnu.gdb.power.fpu".

It isn't clear from the standard features documentation that these are
requirements.  However, these tdescs would cause trouble in the VSX
pseudo-register functions, so this patch will cause them to be
rejected.

gdb/ChangeLog:
2018-10-26  Pedro Franco de Carvalho  <pedromfc@linux.ibm.com>

	* rs6000-tdep.c (rs6000_gdbarch_init): Reject tdescs with vsx but
	without altivec or fpu.