| /* Target-dependent code for the i387. |
| |
| Copyright 2000, 2001, 2002, 2003 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 |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 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. */ |
| |
| #ifndef I387_TDEP_H |
| #define I387_TDEP_H |
| |
| 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) |
| |
| |
| /* 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, void *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 void *from); |
| |
| |
| /* 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 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. */ |
| |
| 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 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. */ |
| |
| 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 */ |