1 /* Native-dependent code for SVR4 Unix running on i386's, for GDB.
2 Copyright 1988, 1989, 1991, 1992, 1996, 1998 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,
19 Boston, MA 02111-1307, USA. */
30 #ifdef HAVE_SYS_PROCFS_H
32 #include <sys/procfs.h>
34 /* The /proc interface divides the target machine's register set up into
35 two different sets, the general register set (gregset) and the floating
36 point register set (fpregset). For each set, there is an ioctl to get
37 the current register set and another ioctl to set the current values.
39 The actual structure passed through the ioctl interface is, of course,
40 naturally machine dependent, and is different for each set of registers.
41 For the i386 for example, the general register set is typically defined
44 typedef int gregset_t[19]; (in <sys/regset.h>)
46 #define GS 0 (in <sys/reg.h>)
52 and the floating point set by:
54 typedef struct fpregset
58 struct fpchip_state // fp extension state //
60 int state[27]; // 287/387 saved state //
61 int status; // status word saved at exception //
63 struct fp_emul_space // for emulators //
68 int f_fpregs[62]; // union of the above //
70 long f_wregs[33]; // saved weitek state //
73 These routines provide the packing and unpacking of gregset_t and
74 fpregset_t formatted data.
80 /* This is a duplicate of the table in i386-xdep.c. */
90 /* Prototypes for local functions */
92 void fill_gregset
PARAMS ((gregset_t
*, int));
94 void supply_gregset
PARAMS ((gregset_t
*));
96 void supply_fpregset
PARAMS ((fpregset_t
*));
98 void fill_fpregset
PARAMS ((fpregset_t
*, int));
101 /* FIXME: These routine absolutely depends upon (NUM_REGS - NUM_FREGS)
102 being less than or equal to the number of registers that can be stored
103 in a gregset_t. Note that with the current scheme there will typically
104 be more registers actually stored in a gregset_t that what we know
105 about. This is bogus and should be fixed. */
107 /* Given a pointer to a general register set in /proc format (gregset_t *),
108 unpack the register contents and supply them as gdb's idea of the current
112 supply_gregset (gregsetp
)
116 register greg_t
*regp
= (greg_t
*) gregsetp
;
119 for (regi
= 0; regi
< (NUM_REGS
- NUM_FREGS
); regi
++)
121 supply_register (regi
, (char *) (regp
+ regmap
[regi
]));
126 fill_gregset (gregsetp
, regno
)
131 register greg_t
*regp
= (greg_t
*) gregsetp
;
134 for (regi
= 0; regi
< (NUM_REGS
- NUM_FREGS
); regi
++)
136 if ((regno
== -1) || (regno
== regi
))
138 *(regp
+ regmap
[regi
]) = *(int *) ®isters
[REGISTER_BYTE (regi
)];
143 #endif /* HAVE_GREGSET_T */
145 #if defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T)
147 /* Given a pointer to a floating point register set in /proc format
148 (fpregset_t *), unpack the register contents and supply them as gdb's
149 idea of the current floating point register values. */
152 supply_fpregset (fpregsetp
)
153 fpregset_t
*fpregsetp
;
155 /* FIXME: see m68k-tdep.c for an example, for the m68k. */
158 /* Given a pointer to a floating point register set in /proc format
159 (fpregset_t *), update the register specified by REGNO from gdb's idea
160 of the current floating point register set. If REGNO is -1, update
164 fill_fpregset (fpregsetp
, regno
)
165 fpregset_t
*fpregsetp
;
168 /* FIXME: see m68k-tdep.c for an example, for the m68k. */
171 #endif /* defined (FP0_REGNUM) && defined (HAVE_FPREGSET_T) */
173 #endif /* HAVE_SYS_PROCFS_H */
This page took 0.032932 seconds and 4 git commands to generate.