X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fstd-regs.c;h=b9c906b9c3f4b35543da9273660aa77cf4b47ecc;hb=873657b9e824943ae44c12966c29cbbcd21c986f;hp=2edcba8ac38545934071cb8058ac16a69e712c22;hpb=123dc839145c04e57435369a9f2551a505ce0b33;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/std-regs.c b/gdb/std-regs.c
index 2edcba8ac3..b9c906b9c3 100644
--- a/gdb/std-regs.c
+++ b/gdb/std-regs.c
@@ -1,6 +1,6 @@
 /* Builtin frame register, for GDB, the GNU debugger.
 
-   Copyright (C) 2002, 2005, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2002-2020 Free Software Foundation, Inc.
 
    Contributed by Red Hat.
 
@@ -8,7 +8,7 @@
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -17,80 +17,37 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
 #include "user-regs.h"
 #include "frame.h"
 #include "gdbtypes.h"
 #include "value.h"
-#include "gdb_string.h"
-
-/* Types that describe the various builtin registers.  */
-
-static struct type *builtin_type_frame_reg;
-
-/* Constructors for those types.  */
-
-static void
-build_builtin_type_frame_reg (void)
-{
-  /* $frame.  */
-  if (builtin_type_frame_reg == NULL)
-    {
-#if 0
-      struct frame
-      {
-	void *base;
-      };
-#endif
-      builtin_type_frame_reg = init_composite_type ("frame", TYPE_CODE_STRUCT);
-      append_composite_type_field (builtin_type_frame_reg, "base",
-				   builtin_type_void_data_ptr);
-    }
-}
-
-static struct value *
-value_of_builtin_frame_reg (struct frame_info *frame, const void *baton)
-{
-  struct value *val;
-  gdb_byte *buf;
-  build_builtin_type_frame_reg ();
-  val = allocate_value (builtin_type_frame_reg);
-  VALUE_LVAL (val) = not_lval;
-  buf = value_contents_raw (val);
-  memset (buf, 0, TYPE_LENGTH (value_type (val)));
-  /* frame.base.  */
-  if (frame != NULL)
-    ADDRESS_TO_POINTER (builtin_type_void_data_ptr, buf,
-			get_frame_base (frame));
-  buf += TYPE_LENGTH (builtin_type_void_data_ptr);
-  /* frame.XXX.  */
-  return val;
-}
+#include "gdbarch.h"
 
 static struct value *
 value_of_builtin_frame_fp_reg (struct frame_info *frame, const void *baton)
 {
-  if (DEPRECATED_FP_REGNUM >= 0)
+  struct gdbarch *gdbarch = get_frame_arch (frame);
+
+  if (gdbarch_deprecated_fp_regnum (gdbarch) >= 0)
     /* NOTE: cagney/2003-04-24: Since the mere presence of "fp" in the
        register name table overrides this built-in $fp register, there
-       is no real reason for this DEPRECATED_FP_REGNUM trickery here.
+       is no real reason for this gdbarch_deprecated_fp_regnum trickery here.
        An architecture wanting to implement "$fp" as alias for a raw
        register can do so by adding "fp" to register name table (mind
        you, doing this is probably a dangerous thing).  */
-    return value_of_register (DEPRECATED_FP_REGNUM, frame);
+    return value_of_register (gdbarch_deprecated_fp_regnum (gdbarch),
+			      frame);
   else
     {
-      struct value *val = allocate_value (builtin_type_void_data_ptr);
+      struct type *data_ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
+      struct value *val = allocate_value (data_ptr_type);
       gdb_byte *buf = value_contents_raw (val);
-      if (frame == NULL)
-	memset (buf, 0, TYPE_LENGTH (value_type (val)));
-      else
-	ADDRESS_TO_POINTER (builtin_type_void_data_ptr, buf,
-			    get_frame_base_address (frame));
+
+      gdbarch_address_to_pointer (gdbarch, data_ptr_type,
+				  buf, get_frame_base_address (frame));
       return val;
     }
 }
@@ -98,17 +55,18 @@ value_of_builtin_frame_fp_reg (struct frame_info *frame, const void *baton)
 static struct value *
 value_of_builtin_frame_pc_reg (struct frame_info *frame, const void *baton)
 {
-  if (PC_REGNUM >= 0)
-    return value_of_register (PC_REGNUM, frame);
+  struct gdbarch *gdbarch = get_frame_arch (frame);
+
+  if (gdbarch_pc_regnum (gdbarch) >= 0)
+    return value_of_register (gdbarch_pc_regnum (gdbarch), frame);
   else
     {
-      struct value *val = allocate_value (builtin_type_void_data_ptr);
+      struct type *func_ptr_type = builtin_type (gdbarch)->builtin_func_ptr;
+      struct value *val = allocate_value (func_ptr_type);
       gdb_byte *buf = value_contents_raw (val);
-      if (frame == NULL)
-	memset (buf, 0, TYPE_LENGTH (value_type (val)));
-      else
-	ADDRESS_TO_POINTER (builtin_type_void_data_ptr, buf,
-			    get_frame_pc (frame));
+
+      gdbarch_address_to_pointer (gdbarch, func_ptr_type,
+				  buf, get_frame_pc (frame));
       return val;
     }
 }
@@ -116,34 +74,26 @@ value_of_builtin_frame_pc_reg (struct frame_info *frame, const void *baton)
 static struct value *
 value_of_builtin_frame_sp_reg (struct frame_info *frame, const void *baton)
 {
-#ifdef SP_REGNUM
-  if (SP_REGNUM >= 0)
-    return value_of_register (SP_REGNUM, frame);
-#endif
+  struct gdbarch *gdbarch = get_frame_arch (frame);
+
+  if (gdbarch_sp_regnum (gdbarch) >= 0)
+    return value_of_register (gdbarch_sp_regnum (gdbarch), frame);
   error (_("Standard register ``$sp'' is not available for this target"));
 }
 
 static struct value *
 value_of_builtin_frame_ps_reg (struct frame_info *frame, const void *baton)
 {
-#ifdef PS_REGNUM
-  if (PS_REGNUM >= 0)
-    return value_of_register (PS_REGNUM, frame);
-#endif
+  struct gdbarch *gdbarch = get_frame_arch (frame);
+
+  if (gdbarch_ps_regnum (gdbarch) >= 0)
+    return value_of_register (gdbarch_ps_regnum (gdbarch), frame);
   error (_("Standard register ``$ps'' is not available for this target"));
 }
 
-extern initialize_file_ftype _initialize_frame_reg; /* -Wmissing-prototypes */
-
 void
 _initialize_frame_reg (void)
 {
-  /* FIXME: cagney/2002-02-08: At present the local builtin types
-     can't be initialized using _initialize*() or gdbarch.  Due mainly
-     to non-multi-arch targets, GDB initializes things piece meal and,
-     as a consequence can leave these types NULL.  */
-  DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_frame_reg);
-
   /* Frame based $fp, $pc, $sp and $ps.  These only come into play
      when the target does not define its own version of these
      registers.  */
@@ -151,10 +101,4 @@ _initialize_frame_reg (void)
   user_reg_add_builtin ("pc", value_of_builtin_frame_pc_reg, NULL);
   user_reg_add_builtin ("sp", value_of_builtin_frame_sp_reg, NULL);
   user_reg_add_builtin ("ps", value_of_builtin_frame_ps_reg, NULL);
-
-  /* NOTE: cagney/2002-04-05: For moment leave the $frame / $gdbframe
-     / $gdb.frame disabled.  It isn't yet clear which of the many
-     options is the best.  */
-  if (0)
-    user_reg_add_builtin ("frame", value_of_builtin_frame_reg, NULL);
 }