Remove global variable arm_linux_has_wmmx_registers in arm-linux-nat.c

This patch is to remove the global variable arm_linux_has_wmmx_registers
in arm-linux-nat.c, and add a new field have_wmmx_registers in
'struct gdbarch_tdep'.

gdb:

2015-05-28  Yao Qi  <yao.qi@linaro.org>

	* arm-linux-nat.c (arm_linux_has_wmmx_registers): Remove.
	(arm_linux_fetch_inferior_registers): Use
	tdep->have_wmmx_registers instead of arm_linux_has_wmmx_registers.
	(arm_linux_store_inferior_registers): Likewise.
	(arm_linux_read_description): Don't set
	arm_linux_has_wmmx_registers.
	* arm-tdep.c (arm_gdbarch_init): Set
	tdep->have_wmmx_registers according target descriptions.
	* arm-tdep.h (struct gdbarch_tdep) <have_wmmx_registers>: New
	field.

1 files changed, 1 insertions, 0 deletions

diff --git a/gdb/arm-tdep.h b/gdb/arm-tdep.h
index 06658a00e8..f81679a201 100644
--- a/gdb/arm-tdep.h
+++ b/gdb/arm-tdep.h
@@ -161,6 +161,7 @@ struct gdbarch_tdep
   enum arm_float_model fp_model; /* Floating point calling conventions.  */
 
   int have_fpa_registers;	/* Does the target report the FPA registers?  */
+  int have_wmmx_registers;	/* Does the target report the WMMX registers?  */
   /* The number of VFP registers reported by the target.  It is zero
      if VFP registers are not supported.  */
   int vfp_register_count;