gdb

	* amd64-tdep.c (amd64_pseudo_register_read_value): Rename
	from amd64_pseudo_register_read.  Change arguments.  Call
	mark_value_bytes_unavailable when needed.
	(amd64_init_abi): Use set_gdbarch_pseudo_register_read_value, not
	set_gdbarch_pseudo_register_read.
	* sentinel-frame.c (sentinel_frame_prev_register): Use
	regcache_cooked_read_value.
	* regcache.h (regcache_cooked_read_value): Declare.
	* regcache.c (regcache_cooked_read_value): New function.
	(regcache_cooked_read): Call
	gdbarch_pseudo_register_read_value if available.
	* i386-tdep.h (i386_pseudo_register_read_value): Declare.
	(i386_pseudo_register_read): Remove.
	* i386-tdep.c (i386_pseudo_register_read_into_value): Rename from
	i386_pseudo_register_read.  Change arguments.  Call
	mark_value_bytes_unavailable when needed.
	(i386_pseudo_register_read_value): New function.
	(i386_gdbarch_init): Call set_gdbarch_pseudo_register_read_value,
	not set_gdbarch_pseudo_register_read.
	* gdbarch.sh (pseudo_register_read_value): New method.
	* gdbarch.c, gdbarch.h: Rebuild.
	* findvar.c (value_from_register): Call get_frame_register_value.
gdb/testsuite
	* gdb.dwarf2/typeddwarf.c: XFAIL 'z' on x86-64.
	* gdb.dwarf2/typeddwarf.exp (xfail-gdb-test): Add arch_pattern
	argument.
	* gdb.dwarf2/typeddwarf-amd64.S: New file.

1 files changed, 55 insertions, 0 deletions

diff --git a/gdb/regcache.c b/gdb/regcache.c
index 41f218d7f27..0af93e83a41 100644
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -709,11 +709,66 @@ regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf)
 
       return regcache->register_status[regnum];
     }
+  else if (gdbarch_pseudo_register_read_value_p (regcache->descr->gdbarch))
+    {
+      struct value *mark, *computed;
+      enum register_status result = REG_VALID;
+
+      mark = value_mark ();
+
+      computed = gdbarch_pseudo_register_read_value (regcache->descr->gdbarch,
+						     regcache, regnum);
+      if (value_entirely_available (computed))
+	memcpy (buf, value_contents_raw (computed),
+		regcache->descr->sizeof_register[regnum]);
+      else
+	{
+	  memset (buf, 0, regcache->descr->sizeof_register[regnum]);
+	  result = REG_UNAVAILABLE;
+	}
+
+      value_free_to_mark (mark);
+
+      return result;
+    }
   else
     return gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache,
 					 regnum, buf);
 }
 
+struct value *
+regcache_cooked_read_value (struct regcache *regcache, int regnum)
+{
+  gdb_assert (regnum >= 0);
+  gdb_assert (regnum < regcache->descr->nr_cooked_registers);
+
+  if (regnum < regcache->descr->nr_raw_registers
+      || (regcache->readonly_p
+	  && regcache->register_status[regnum] != REG_UNKNOWN)
+      || !gdbarch_pseudo_register_read_value_p (regcache->descr->gdbarch))
+    {
+      struct value *result;
+
+      result = allocate_value (register_type (regcache->descr->gdbarch,
+					      regnum));
+      VALUE_LVAL (result) = lval_register;
+      VALUE_REGNUM (result) = regnum;
+
+      /* It is more efficient in general to do this delegation in this
+	 direction than in the other one, even though the value-based
+	 API is preferred.  */
+      if (regcache_cooked_read (regcache, regnum,
+				value_contents_raw (result)) == REG_UNAVAILABLE)
+	mark_value_bytes_unavailable (result, 0,
+				      TYPE_LENGTH (value_type (result)));
+
+      return result;
+    }
+  else
+    return gdbarch_pseudo_register_read_value (regcache->descr->gdbarch,
+					       regcache, regnum);
+}
+
 enum register_status
 regcache_cooked_read_signed (struct regcache *regcache, int regnum,
 			     LONGEST *val)