gdb/x86: Implement ax_pseudo_register_collect hook.

Makes "collect $ymm15" action work.

gdb/ChangeLog:

	* amd64-tdep.c (amd64_ax_pseudo_register_collect): New function.
	(amd64_init_abi): Fill ax_pseudo_register_collect hook.
	* gdb/i386-tdep.c (i386_pseudo_register_read_into_value): Remove
	misleading comment.
	(i386_pseudo_register_write): Ditto.
	(i386_ax_pseudo_register_collect): New function.
	(i386_gdbarch_init): Fill ax_pseudo_register_collect hook.
	* i386-tdep.h: Add i386_ax_pseudo_register_collect prototype.

1 files changed, 31 insertions, 0 deletions

diff --git a/gdb/amd64-tdep.c b/gdb/amd64-tdep.c
index fae92b2..a62efde 100644
--- a/gdb/amd64-tdep.c
+++ b/gdb/amd64-tdep.c
@@ -455,6 +455,35 @@ amd64_pseudo_register_write (struct gdbarch *gdbarch,
     i386_pseudo_register_write (gdbarch, regcache, regnum, buf);
 }
 
+/* Implement the 'ax_pseudo_register_collect' gdbarch method.  */
+
+static int
+amd64_ax_pseudo_register_collect (struct gdbarch *gdbarch,
+				  struct agent_expr *ax, int regnum)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  if (i386_byte_regnum_p (gdbarch, regnum))
+    {
+      int gpnum = regnum - tdep->al_regnum;
+
+      if (gpnum >= AMD64_NUM_LOWER_BYTE_REGS)
+	ax_reg_mask (ax, gpnum - AMD64_NUM_LOWER_BYTE_REGS);
+      else
+	ax_reg_mask (ax, gpnum);
+      return 0;
+    }
+  else if (i386_dword_regnum_p (gdbarch, regnum))
+    {
+      int gpnum = regnum - tdep->eax_regnum;
+
+      ax_reg_mask (ax, gpnum);
+      return 0;
+    }
+  else
+    return i386_ax_pseudo_register_collect (gdbarch, ax, regnum);
+}
+
 
 
 /* Register classes as defined in the psABI.  */
@@ -2997,6 +3026,8 @@ amd64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 					  amd64_pseudo_register_read_value);
   set_gdbarch_pseudo_register_write (gdbarch,
 				     amd64_pseudo_register_write);
+  set_gdbarch_ax_pseudo_register_collect (gdbarch,
+					  amd64_ax_pseudo_register_collect);
 
   set_tdesc_pseudo_register_name (gdbarch, amd64_pseudo_register_name);