/* Target-dependent code for the i387.
- Copyright 2000, 2001 Free Software Foundation, Inc.
+
+ Copyright 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GDB.
#define I387_TDEP_H
struct gdbarch;
-struct ui_file;
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_value_to_register (struct frame_info *frame, int regnum,
struct type *type, const void *from);
+\f
-/* 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. */
+/* Size of the memory area use by the 'fsave' and 'fxsave'
+ instructions. */
+#define I387_SIZEOF_FSAVE 108
+#define I387_SIZEOF_FXSAVE 512
-extern void i387_supply_register (int regnum, char *fsave);
+/* Fill register REGNUM in REGCACHE with the appropriate value from
+ *FSAVE. This function masks off any of the reserved bits in
+ *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. */
+extern void i387_supply_fsave (struct regcache *regcache, int regnum,
+ const void *fsave);
-extern void i387_supply_fsave (char *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_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
+ 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. */
-extern void i387_fill_fsave (char *fsave, int regnum);
+extern void i387_fill_fsave (void *fsave, int regnum);
+
+/* 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_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
+ *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. */
-extern void i387_fill_fxsave (char *fxsave, int regnum);
+extern void i387_fill_fxsave (void *fxsave, int regnum);
+
+/* Prepare the FPU stack in REGCACHE for a function return. */
+
+extern void i387_return_value (struct gdbarch *gdbarch,
+ struct regcache *regcache);
#endif /* i387-tdep.h */