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Diffstat (limited to 'contrib/gdb/gdb/i387-tdep.h')
| -rw-r--r-- | contrib/gdb/gdb/i387-tdep.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/contrib/gdb/gdb/i387-tdep.h b/contrib/gdb/gdb/i387-tdep.h new file mode 100644 index 0000000..978fdf9 --- /dev/null +++ b/contrib/gdb/gdb/i387-tdep.h @@ -0,0 +1,118 @@ +/* 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, 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 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 */ |
