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* i386-tdep.h: New file.

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* i387-nat.c: Include i386-tdep.h when multiarch.
* i387-tdep.c: Ditto.
This commit is contained in:
Jiri Smid 2001-09-21 12:15:15 +00:00
parent cab16195fe
commit 9a82579f3d
3 changed files with 80 additions and 0 deletions
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73
gdb/i386-tdep.h Normal file
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/* Target-dependent code for GDB, the GNU debugger.
Copyright 2001
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 I386_TDEP_H
#define I386_TDEP_H
#define FPU_REG_RAW_SIZE 10
#define XMM0_REGNUM FIRST_XMM_REGNUM
#define FIRST_FPU_REGNUM FP0_REGNUM
#define LAST_FPU_REGNUM (gdbarch_tdep (current_gdbarch)->last_fpu_regnum)
#define FIRST_XMM_REGNUM (gdbarch_tdep (current_gdbarch)->first_xmm_regnum)
#define LAST_XMM_REGNUM (gdbarch_tdep (current_gdbarch)->last_xmm_regnum)
#define MXCSR_REGNUM (gdbarch_tdep (current_gdbarch)->mxcsr_regnum)
#define FIRST_FPU_CTRL_REGNUM (gdbarch_tdep (current_gdbarch)->first_fpu_ctrl_regnum)
#define LAST_FPU_CTRL_REGNUM (FIRST_FPU_CTRL_REGNUM + 7)
/* All of these control registers (except for FCOFF and FDOFF) are
sixteen bits long (at most) in the FPU, but are zero-extended to
thirty-two bits in GDB's register file. This makes it easier to
compute the size of the control register file, and somewhat easier
to convert to and from the FSAVE instruction's 32-bit format. */
/* FPU control word. */
#define FCTRL_REGNUM (FIRST_FPU_CTRL_REGNUM)
/* FPU status word. */
#define FSTAT_REGNUM (FIRST_FPU_CTRL_REGNUM + 1)
/* FPU register tag word. */
#define FTAG_REGNUM (FIRST_FPU_CTRL_REGNUM + 2)
/* FPU instruction's code segment selector 16 bits, called "FPU Instruction
Pointer Selector" in the x86 manuals. */
#define FCS_REGNUM (FIRST_FPU_CTRL_REGNUM + 3)
/* FPU instruction's offset within segment ("Fpu Code OFFset"). */
#define FCOFF_REGNUM (FIRST_FPU_CTRL_REGNUM + 4)
/* FPU operand's data segment. */
#define FDS_REGNUM (FIRST_FPU_CTRL_REGNUM + 5)
/* FPU operand's offset within segment. */
#define FDOFF_REGNUM (FIRST_FPU_CTRL_REGNUM + 6)
/* FPU opcode, bottom eleven bits. */
#define FOP_REGNUM (FIRST_FPU_CTRL_REGNUM + 7)
/* i386 architecture specific information. */
struct gdbarch_tdep
{
int last_fpu_regnum;
int first_xmm_regnum;
int last_xmm_regnum;
int mxcsr_regnum; /* Streaming SIMD Extension control/status. */
int first_fpu_ctrl_regnum;
};
#define IS_FP_REGNUM(n) (FIRST_FPU_REGNUM <= (n) && (n) <= LAST_FPU_REGNUM)
#define IS_FPU_CTRL_REGNUM(n) (FIRST_FPU_CTRL_REGNUM <= (n) && (n) <= LAST_FPU_CTRL_REGNUM)
#define IS_SSE_REGNUM(n) (FIRST_XMM_REGNUM <= (n) && (n) <= LAST_XMM_REGNUM)
#endif

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gdb/i387-nat.c
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@ -25,6 +25,10 @@
#include "i387-nat.h"
#if GDB_MULTI_ARCH > 0
#include "i386-tdep.h"
#endif
/* FIXME: kettenis/2000-05-21: Right now more than a few i386 targets
define their own routines to manage the floating-point registers in
GDB's register array. Most (if not all) of these targets use the

3
gdb/i387-tdep.c
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@ -30,6 +30,9 @@
#include "gdb_assert.h"
#include "doublest.h"
#if GDB_MULTI_ARCH >0
#include "i386-tdep.h"
#endif
/* FIXME: Eliminate the next two functions when we have the time to
change all the callers. */