1 /* Native-dependent code for SVR4 Unix running on i386's, for GDB.
2 Copyright 1988, 1989, 1991, 1992, 1996 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 #ifdef HAVE_SYS_PROCFS_H
24 #include <sys/procfs.h>
26 /* The /proc interface divides the target machine's register set up into
27 two different sets, the general register set (gregset) and the floating
28 point register set (fpregset). For each set, there is an ioctl to get
29 the current register set and another ioctl to set the current values.
31 The actual structure passed through the ioctl interface is, of course,
32 naturally machine dependent, and is different for each set of registers.
33 For the i386 for example, the general register set is typically defined
36 typedef int gregset_t[19]; (in <sys/regset.h>)
38 #define GS 0 (in <sys/reg.h>)
44 and the floating point set by:
46 typedef struct fpregset
50 struct fpchip_state // fp extension state //
52 int state[27]; // 287/387 saved state //
53 int status; // status word saved at exception //
55 struct fp_emul_space // for emulators //
60 int f_fpregs[62]; // union of the above //
62 long f_wregs[33]; // saved weitek state //
65 These routines provide the packing and unpacking of gregset_t and
66 fpregset_t formatted data.
72 /* This is a duplicate of the table in i386-xdep.c. */
83 /* FIXME: These routine absolutely depends upon (NUM_REGS - NUM_FREGS)
84 being less than or equal to the number of registers that can be stored
85 in a gregset_t. Note that with the current scheme there will typically
86 be more registers actually stored in a gregset_t that what we know
87 about. This is bogus and should be fixed. */
89 /* Given a pointer to a general register set in /proc format (gregset_t *),
90 unpack the register contents and supply them as gdb's idea of the current
94 supply_gregset (gregsetp
)
98 register greg_t
*regp
= (greg_t
*) gregsetp
;
101 for (regi
= 0 ; regi
< (NUM_REGS
- NUM_FREGS
) ; regi
++)
103 supply_register (regi
, (char *) (regp
+ regmap
[regi
]));
108 fill_gregset (gregsetp
, regno
)
113 register greg_t
*regp
= (greg_t
*) gregsetp
;
114 extern char registers
[];
117 for (regi
= 0 ; regi
< (NUM_REGS
- NUM_FREGS
) ; regi
++)
119 if ((regno
== -1) || (regno
== regi
))
121 *(regp
+ regmap
[regi
]) = *(int *) ®isters
[REGISTER_BYTE (regi
)];
126 #endif /* HAVE_GREGSET_T */
128 #if defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T)
130 /* Given a pointer to a floating point register set in /proc format
131 (fpregset_t *), unpack the register contents and supply them as gdb's
132 idea of the current floating point register values. */
135 supply_fpregset (fpregsetp
)
136 fpregset_t
*fpregsetp
;
138 /* FIXME: see m68k-tdep.c for an example, for the m68k. */
141 /* Given a pointer to a floating point register set in /proc format
142 (fpregset_t *), update the register specified by REGNO from gdb's idea
143 of the current floating point register set. If REGNO is -1, update
147 fill_fpregset (fpregsetp
, regno
)
148 fpregset_t
*fpregsetp
;
151 /* FIXME: see m68k-tdep.c for an example, for the m68k. */
154 #endif /* defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T) */
156 #endif /* HAVE_SYS_PROCFS_H */
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