1 /* Host-dependent code for Sun-3 for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1989, 1991, 1992 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. */
24 #include <sys/ptrace.h>
25 #define KERNEL /* To get floating point reg definitions */
26 #include <machine/reg.h>
28 static void fetch_core_registers
PARAMS ((char *, unsigned, int, CORE_ADDR
));
31 fetch_inferior_registers (regno
)
34 struct regs inferior_registers
;
36 struct fp_status inferior_fp_registers
;
38 extern char registers
[];
42 ptrace (PTRACE_GETREGS
, inferior_pid
,
43 (PTRACE_ARG3_TYPE
) &inferior_registers
);
45 ptrace (PTRACE_GETFPREGS
, inferior_pid
,
46 (PTRACE_ARG3_TYPE
) &inferior_fp_registers
);
49 memcpy (registers
, &inferior_registers
, 16 * 4);
51 memcpy (®isters
[REGISTER_BYTE (FP0_REGNUM
)], &inferior_fp_registers
,
52 sizeof inferior_fp_registers
.fps_regs
);
54 *(int *)®isters
[REGISTER_BYTE (PS_REGNUM
)] = inferior_registers
.r_ps
;
55 *(int *)®isters
[REGISTER_BYTE (PC_REGNUM
)] = inferior_registers
.r_pc
;
57 memcpy (®isters
[REGISTER_BYTE (FPC_REGNUM
)],
58 &inferior_fp_registers
.fps_control
,
59 sizeof inferior_fp_registers
- sizeof inferior_fp_registers
.fps_regs
);
63 /* Store our register values back into the inferior.
64 If REGNO is -1, do this for all registers.
65 Otherwise, REGNO specifies which register (so we can save time). */
68 store_inferior_registers (regno
)
71 struct regs inferior_registers
;
73 struct fp_status inferior_fp_registers
;
75 extern char registers
[];
77 memcpy (&inferior_registers
, registers
, 16 * 4);
79 memcpy (&inferior_fp_registers
, ®isters
[REGISTER_BYTE (FP0_REGNUM
)],
80 sizeof inferior_fp_registers
.fps_regs
);
82 inferior_registers
.r_ps
= *(int *)®isters
[REGISTER_BYTE (PS_REGNUM
)];
83 inferior_registers
.r_pc
= *(int *)®isters
[REGISTER_BYTE (PC_REGNUM
)];
86 memcpy (&inferior_fp_registers
.fps_control
,
87 ®isters
[REGISTER_BYTE (FPC_REGNUM
)],
88 sizeof inferior_fp_registers
- sizeof inferior_fp_registers
.fps_regs
);
91 ptrace (PTRACE_SETREGS
, inferior_pid
,
92 (PTRACE_ARG3_TYPE
) &inferior_registers
);
94 ptrace (PTRACE_SETFPREGS
, inferior_pid
,
95 (PTRACE_ARG3_TYPE
) &inferior_fp_registers
);
100 /* All of this stuff is only relevant if both host and target are sun3. */
101 /* Machine-dependent code for pulling registers out of a Sun-3 core file. */
104 fetch_core_registers (core_reg_sect
, core_reg_size
, which
, reg_addr
)
106 unsigned core_reg_size
;
108 CORE_ADDR reg_addr
; /* Unused in this version */
110 extern char registers
[];
111 struct regs
*regs
= (struct regs
*) core_reg_sect
;
114 if (core_reg_size
< sizeof (struct regs
))
115 error ("Can't find registers in core file");
117 memcpy (registers
, (char *)regs
, 16 * 4);
118 supply_register (PS_REGNUM
, (char *)®s
->r_ps
);
119 supply_register (PC_REGNUM
, (char *)®s
->r_pc
);
121 } else if (which
== 2) {
123 #define fpustruct ((struct fpu *) core_reg_sect)
125 if (core_reg_size
>= sizeof (struct fpu
))
128 memcpy (®isters
[REGISTER_BYTE (FP0_REGNUM
)],
129 fpustruct
->f_fpstatus
.fps_regs
,
130 sizeof fpustruct
->f_fpstatus
.fps_regs
);
131 memcpy (®isters
[REGISTER_BYTE (FPC_REGNUM
)],
132 &fpustruct
->f_fpstatus
.fps_control
,
133 sizeof fpustruct
->f_fpstatus
-
134 sizeof fpustruct
->f_fpstatus
.fps_regs
);
138 fprintf_unfiltered (gdb_stderr
, "Couldn't read float regs from core file\n");
143 /* Register that we are able to handle sun3 core file formats.
144 FIXME: is this really bfd_target_unknown_flavour? */
146 static struct core_fns sun3_core_fns
=
148 bfd_target_unknown_flavour
,
149 fetch_core_registers
,
154 _initialize_core_sun3 ()
156 add_core_fns (&sun3_core_fns
);