/* Target-dependent code for the i387. Copyright 2000, 2001, 2002, 2003, 2004 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, 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); /* Size of the memory area use by the 'fsave' and 'fxsave' instructions. */ #define I387_SIZEOF_FSAVE 108 #define I387_SIZEOF_FXSAVE 512 void i387_swap_fxsave (struct regcache *regcache, const uint8_t *fxsave); /* 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 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 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 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_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 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 */