* exec.c: #include "arch-utils.h"

[deliverable/binutils-gdb.git] / gdb / i387-tdep.c

diff --git a/gdb/i387-tdep.c b/gdb/i387-tdep.c
index 6315899c139fce256ebaa897916f5a1b475bec1f..6df384c850685bc3cb0facf66e2400ae4a84574a 100644 (file)
--- a/gdb/i387-tdep.c
+++ b/gdb/i387-tdep.c
@@ -1,13 +1,13 @@
 /* Intel 387 floating point stuff.
 
-   Copyright (C) 1988, 1989, 1991, 1992, 1993, 1994, 1998, 1999, 2000,
-   2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 1988, 1989, 1991, 1992, 1993, 1994, 1998, 1999, 2000, 2001,
+   2002, 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    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,
@@ -16,9 +16,7 @@
    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 "doublest.h"
@@ -287,6 +285,25 @@ i387_print_float_info (struct gdbarch *gdbarch, struct ui_file *file,
 }
 \f
 
+/* Return nonzero if a value of type TYPE stored in register REGNUM
+   needs any special handling.  */
+
+int
+i387_convert_register_p (struct gdbarch *gdbarch, int regnum, struct type *type)
+{
+  if (i386_fp_regnum_p (regnum))
+    {
+      /* Floating point registers must be converted unless we are
+        accessing them in their hardware type.  */
+      if (type == builtin_type_i387_ext)
+       return 0;
+      else
+       return 1;
+    }
+
+  return 0;
+}
+
 /* Read a value of type TYPE from register REGNUM in frame FRAME, and
    return its contents in TO.  */
 
@@ -306,8 +323,7 @@ i387_register_to_value (struct frame_info *frame, int regnum,
       return;
     }
 
-  /* Convert to TYPE.  This should be a no-op if TYPE is equivalent to
-     the extended floating-point format used by the FPU.  */
+  /* Convert to TYPE.  */
   get_frame_register (frame, regnum, from);
   convert_typed_floating (from, builtin_type_i387_ext, to, type);
 }
@@ -331,8 +347,7 @@ i387_value_to_register (struct frame_info *frame, int regnum,
       return;
     }
 
-  /* Convert from TYPE.  This should be a no-op if TYPE is equivalent
-     to the extended floating-point format used by the FPU.  */
+  /* Convert from TYPE.  */
   convert_typed_floating (from, type, to, builtin_type_i387_ext);
   put_frame_register (frame, regnum, to);
 }
@@ -437,7 +452,7 @@ i387_supply_fsave (struct regcache *regcache, int regnum, const void *fsave)
 void
 i387_collect_fsave (const struct regcache *regcache, int regnum, void *fsave)
 {
-  struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+  struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
   gdb_byte *regs = fsave;
   int i;
 
@@ -473,17 +488,6 @@ i387_collect_fsave (const struct regcache *regcache, int regnum, void *fsave)
       }
 #undef I387_ST0_REGNUM
 }
-
-/* Fill register REGNUM (if it is a floating-point register) in *FSAVE
-   with the value in GDB's register cache.  If REGNUM is -1, do this
-   for all registers.  This function doesn't touch any of the reserved
-   bits in *FSAVE.  */
-
-void
-i387_fill_fsave (void *fsave, int regnum)
-{
-  i387_collect_fsave (current_regcache, regnum, fsave);
-}
 \f
 
 /* At fxsave_offset[REGNUM] you'll find the offset to the location in
@@ -636,7 +640,7 @@ i387_supply_fxsave (struct regcache *regcache, int regnum, const void *fxsave)
 void
 i387_collect_fxsave (const struct regcache *regcache, int regnum, void *fxsave)
 {
-  struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+  struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
   gdb_byte *regs = fxsave;
   int i;
 
@@ -701,17 +705,6 @@ i387_collect_fxsave (const struct regcache *regcache, int regnum, void *fxsave)
 #undef I387_NUM_XMM_REGS
 }
 
-/* Fill register REGNUM (if it is a floating-point or SSE register) in
-   *FXSAVE with the value in GDB's register cache.  If REGNUM is -1, do
-   this for all registers.  This function doesn't touch any of the
-   reserved bits in *FXSAVE.  */
-
-void
-i387_fill_fxsave (void *fxsave, int regnum)
-{
-  i387_collect_fxsave (current_regcache, regnum, fxsave);
-}
-
 /* Recreate the FTW (tag word) valid bits from the 80-bit FP data in
    *RAW.  */