/* Native-dependent code for SVR4 Unix running on i386's, for GDB.
- Copyright 1988, 1989, 1991, 1992, 1996 Free Software Foundation, Inc.
+ Copyright 1988, 1989, 1991, 1992, 1996, 1997, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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. */
#include "defs.h"
+#include "value.h"
+#include "inferior.h"
+#include "regcache.h"
+
+#ifdef HAVE_SYS_REG_H
+#include <sys/reg.h>
+#endif
+#include "i387-nat.h"
+
#ifdef HAVE_SYS_PROCFS_H
#include <sys/procfs.h>
+/* Prototypes for supply_gregset etc. */
+#include "gregset.h"
+
/* The /proc interface divides the target machine's register set up into
- two different sets, the general register set (gregset) and the floating
- point register set (fpregset). For each set, there is an ioctl to get
- the current register set and another ioctl to set the current values.
-
- The actual structure passed through the ioctl interface is, of course,
- naturally machine dependent, and is different for each set of registers.
- For the i386 for example, the general register set is typically defined
- by:
-
- typedef int gregset_t[19]; (in <sys/regset.h>)
-
- #define GS 0 (in <sys/reg.h>)
- #define FS 1
- ...
- #define UESP 17
- #define SS 18
-
- and the floating point set by:
-
- typedef struct fpregset
- {
- union
- {
- struct fpchip_state // fp extension state //
- {
- int state[27]; // 287/387 saved state //
- int status; // status word saved at exception //
- } fpchip_state;
- struct fp_emul_space // for emulators //
- {
- char fp_emul[246];
- char fp_epad[2];
- } fp_emul_space;
- int f_fpregs[62]; // union of the above //
- } fp_reg_set;
- long f_wregs[33]; // saved weitek state //
- } fpregset_t;
-
- These routines provide the packing and unpacking of gregset_t and
- fpregset_t formatted data.
+ two different sets, the general register set (gregset) and the floating
+ point register set (fpregset). For each set, there is an ioctl to get
+ the current register set and another ioctl to set the current values.
+
+ The actual structure passed through the ioctl interface is, of course,
+ naturally machine dependent, and is different for each set of registers.
+ For the i386 for example, the general register set is typically defined
+ by:
+
+ typedef int gregset_t[19]; (in <sys/regset.h>)
+
+ #define GS 0 (in <sys/reg.h>)
+ #define FS 1
+ ...
+ #define UESP 17
+ #define SS 18
+
+ and the floating point set by:
+
+ typedef struct fpregset
+ {
+ union
+ {
+ struct fpchip_state // fp extension state //
+ {
+ int state[27]; // 287/387 saved state //
+ int status; // status word saved at exception //
+ } fpchip_state;
+ struct fp_emul_space // for emulators //
+ {
+ char fp_emul[246];
+ char fp_epad[2];
+ } fp_emul_space;
+ int f_fpregs[62]; // union of the above //
+ } fp_reg_set;
+ long f_wregs[33]; // saved weitek state //
+ } fpregset_t;
+
+ These routines provide the packing and unpacking of gregset_t and
+ fpregset_t formatted data.
*/
/* This is a duplicate of the table in i386-xdep.c. */
-static int regmap[] =
+static int regmap[] =
{
EAX, ECX, EDX, EBX,
UESP, EBP, ESI, EDI,
DS, ES, FS, GS,
};
+/* Prototypes for local functions */
+
+void fill_gregset (gregset_t *, int);
+
+void supply_gregset (gregset_t *);
+
+void supply_fpregset (fpregset_t *);
+
+void fill_fpregset (fpregset_t *, int);
+
/* FIXME: These routine absolutely depends upon (NUM_REGS - NUM_FREGS)
- being less than or equal to the number of registers that can be stored
- in a gregset_t. Note that with the current scheme there will typically
- be more registers actually stored in a gregset_t that what we know
- about. This is bogus and should be fixed. */
+ being less than or equal to the number of registers that can be stored
+ in a gregset_t. Note that with the current scheme there will typically
+ be more registers actually stored in a gregset_t that what we know
+ about. This is bogus and should be fixed. */
/* Given a pointer to a general register set in /proc format (gregset_t *),
- unpack the register contents and supply them as gdb's idea of the current
- register values. */
+ unpack the register contents and supply them as gdb's idea of the current
+ register values. */
void
-supply_gregset (gregsetp)
- gregset_t *gregsetp;
+supply_gregset (gregset_t *gregsetp)
{
register int regi;
register greg_t *regp = (greg_t *) gregsetp;
extern int regmap[];
- for (regi = 0 ; regi < (NUM_REGS - NUM_FREGS) ; regi++)
+ for (regi = 0; regi < (NUM_REGS - NUM_FREGS); regi++)
{
supply_register (regi, (char *) (regp + regmap[regi]));
}
}
void
-fill_gregset (gregsetp, regno)
- gregset_t *gregsetp;
- int regno;
+fill_gregset (gregset_t *gregsetp, int regno)
{
int regi;
register greg_t *regp = (greg_t *) gregsetp;
- extern char registers[];
extern int regmap[];
- for (regi = 0 ; regi < (NUM_REGS - NUM_FREGS) ; regi++)
+ for (regi = 0; regi < (NUM_REGS - NUM_FREGS); regi++)
{
if ((regno == -1) || (regno == regi))
{
}
}
-#endif /* HAVE_GREGSET_T */
+#endif /* HAVE_GREGSET_T */
-#if defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T)
+#if defined (HAVE_FPREGSET_T)
/* Given a pointer to a floating point register set in /proc format
- (fpregset_t *), unpack the register contents and supply them as gdb's
- idea of the current floating point register values. */
+ (fpregset_t *), unpack the register contents and supply them as gdb's
+ idea of the current floating point register values. */
+
+/* FIXME: Assumes that fpregsetp contains an i387 FSAVE area. */
+#if !defined(FPREGSET_FSAVE_OFFSET)
+#define FPREGSET_FSAVE_OFFSET 0
+#endif
-void
-supply_fpregset (fpregsetp)
- fpregset_t *fpregsetp;
+void
+supply_fpregset (fpregset_t *fpregsetp)
{
- /* FIXME: see m68k-tdep.c for an example, for the m68k. */
+ if (NUM_FREGS == 0)
+ return;
+
+ i387_supply_fsave ((char *) fpregsetp + FPREGSET_FSAVE_OFFSET);
}
/* Given a pointer to a floating point register set in /proc format
- (fpregset_t *), update the register specified by REGNO from gdb's idea
- of the current floating point register set. If REGNO is -1, update
- them all. */
+ (fpregset_t *), update the register specified by REGNO from gdb's idea
+ of the current floating point register set. If REGNO is -1, update
+ them all. */
void
-fill_fpregset (fpregsetp, regno)
- fpregset_t *fpregsetp;
- int regno;
+fill_fpregset (fpregset_t *fpregsetp, int regno)
{
- /* FIXME: see m68k-tdep.c for an example, for the m68k. */
+ if (NUM_FREGS == 0)
+ return;
+
+ i387_fill_fsave ((char *) fpregsetp + FPREGSET_FSAVE_OFFSET, regno);
}
-#endif /* defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T) */
+#endif /* defined (HAVE_FPREGSET_T) */
-#endif /* HAVE_SYS_PROCFS_H */
+#endif /* HAVE_SYS_PROCFS_H */
projects / deliverable / binutils-gdb.git / blobdiff