/* Target-dependent code for the i387.
- Copyright 2000, 2001 Free Software Foundation, Inc.
+
+ Copyright (C) 2000, 2001, 2002, 2003, 2004, 2007
+ 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,
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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef I387_TDEP_H
#define I387_TDEP_H
-/* Fill register REGNUM in GDB's register array with the appropriate
- value from *FSAVE. This function masks off any of the reserved
- bits in *FSAVE. */
-
-extern void i387_supply_register (int regnum, char *fsave);
+struct gdbarch;
+struct frame_info;
+struct regcache;
+struct type;
+struct ui_file;
+
+/* Because the number of general-purpose registers is different for
+ AMD64, the floating-point registers and SSE registers get shifted.
+ The following definitions are intended to help writing code that
+ needs the register numbers of floating-point registers and SSE
+ registers. In order to use these, one should provide a definition
+ for I387_ST0_REGNUM, and possibly I387_NUM_XMM_REGS, preferably by
+ using a local "#define" in the body of the function that uses this.
+ Please "#undef" them before the end of the function. */
+
+#define I387_FCTRL_REGNUM (I387_ST0_REGNUM + 8)
+#define I387_FSTAT_REGNUM (I387_FCTRL_REGNUM + 1)
+#define I387_FTAG_REGNUM (I387_FCTRL_REGNUM + 2)
+#define I387_FISEG_REGNUM (I387_FCTRL_REGNUM + 3)
+#define I387_FIOFF_REGNUM (I387_FCTRL_REGNUM + 4)
+#define I387_FOSEG_REGNUM (I387_FCTRL_REGNUM + 5)
+#define I387_FOOFF_REGNUM (I387_FCTRL_REGNUM + 6)
+#define I387_FOP_REGNUM (I387_FCTRL_REGNUM + 7)
+#define I387_XMM0_REGNUM (I387_ST0_REGNUM + 16)
+#define I387_MXCSR_REGNUM (I387_XMM0_REGNUM + I387_NUM_XMM_REGS)
+\f
+
+/* Print out the i387 floating point state. */
+
+extern void i387_print_float_info (struct gdbarch *gdbarch,
+ struct ui_file *file,
+ struct frame_info *frame,
+ const char *args);
+
+/* Read a value of type TYPE from register REGNUM in frame FRAME, and
+ return its contents in TO. */
+
+extern void i387_register_to_value (struct frame_info *frame, int regnum,
+ struct type *type, gdb_byte *to);
+
+/* Write the contents FROM of a value of type TYPE into register
+ REGNUM in frame FRAME. */
+
+extern void i387_value_to_register (struct frame_info *frame, int regnum,
+ struct type *type, const gdb_byte *from);
+\f
+
+/* Size of the memory area use by the 'fsave' and 'fxsave'
+ instructions. */
+#define I387_SIZEOF_FSAVE 108
+#define I387_SIZEOF_FXSAVE 512
+
+/* Fill register REGNUM in REGCACHE with the appropriate value from
+ *FSAVE. This function masks off any of the reserved bits in
+ *FSAVE. */
+
+extern void i387_supply_fsave (struct regcache *regcache, int regnum,
+ const void *fsave);
-/* Fill GDB's register array with the floating-point register values
- in *FSAVE. This function masks off any of the reserved
- bits in *FSAVE. */
+/* Fill register REGNUM (if it is a floating-point register) in *FSAVE
+ with the value from REGCACHE. If REGNUM is -1, do this for all
+ registers. This function doesn't touch any of the reserved bits in
+ *FSAVE. */
-extern void i387_supply_fsave (char *fsave);
+extern void i387_collect_fsave (const struct regcache *regcache, int regnum,
+ void *fsave);
-/* Fill register REGNUM (if it is a floating-point register) in *FSAVE
- with the value in GDB's register array. If REGNUM is -1, do this
- for all registers. This function doesn't touch any of the reserved
- bits in *FSAVE. */
+/* Fill register REGNUM in REGCACHE with the appropriate
+ floating-point or SSE register value from *FXSAVE. This function
+ masks off any of the reserved bits in *FXSAVE. */
-extern void i387_fill_fsave (char *fsave, int regnum);
+extern void i387_supply_fxsave (struct regcache *regcache, int regnum,
+ const void *fxsave);
-/* Fill GDB's register array with the floating-point and SSE register
- values in *FXSAVE. This function masks off any of the reserved
+/* Fill register REGNUM (if it is a floating-point or SSE register) in
+ *FXSAVE with the value from REGCACHE. If REGNUM is -1, do this for
+ all registers. This function doesn't touch any of the reserved
bits in *FXSAVE. */
-extern void i387_supply_fxsave (char *fxsave);
+extern void i387_collect_fxsave (const struct regcache *regcache, int regnum,
+ void *fxsave);
-/* Fill register REGNUM (if it is a floating-point or SSE register) in
- *FXSAVE with the value in GDB's register array. If REGNUM is -1, do
- this for all registers. This function doesn't touch any of the
- reserved bits in *FXSAVE. */
+/* Prepare the FPU stack in REGCACHE for a function return. */
-extern void i387_fill_fxsave (char *fxsave, int regnum);
+extern void i387_return_value (struct gdbarch *gdbarch,
+ struct regcache *regcache);
#endif /* i387-tdep.h */
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