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,
19 Boston, MA 02111-1307, USA. */
25 #include <sys/ptrace.h>
26 #define KERNEL /* To get floating point reg definitions */
27 #include <machine/reg.h>
29 static void fetch_core_registers
PARAMS ((char *, unsigned, int, CORE_ADDR
));
32 fetch_inferior_registers (regno
)
35 struct regs inferior_registers
;
37 struct fp_status inferior_fp_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
;
76 memcpy (&inferior_registers
, registers
, 16 * 4);
78 memcpy (&inferior_fp_registers
, ®isters
[REGISTER_BYTE (FP0_REGNUM
)],
79 sizeof inferior_fp_registers
.fps_regs
);
81 inferior_registers
.r_ps
= *(int *) ®isters
[REGISTER_BYTE (PS_REGNUM
)];
82 inferior_registers
.r_pc
= *(int *) ®isters
[REGISTER_BYTE (PC_REGNUM
)];
85 memcpy (&inferior_fp_registers
.fps_control
,
86 ®isters
[REGISTER_BYTE (FPC_REGNUM
)],
87 sizeof inferior_fp_registers
- sizeof inferior_fp_registers
.fps_regs
);
90 ptrace (PTRACE_SETREGS
, inferior_pid
,
91 (PTRACE_ARG3_TYPE
) & inferior_registers
);
93 ptrace (PTRACE_SETFPREGS
, inferior_pid
,
94 (PTRACE_ARG3_TYPE
) & inferior_fp_registers
);
99 /* All of this stuff is only relevant if both host and target are sun3. */
100 /* Machine-dependent code for pulling registers out of a Sun-3 core file. */
103 fetch_core_registers (core_reg_sect
, core_reg_size
, which
, reg_addr
)
105 unsigned core_reg_size
;
107 CORE_ADDR reg_addr
; /* Unused in this version */
109 struct regs
*regs
= (struct regs
*) core_reg_sect
;
113 if (core_reg_size
< sizeof (struct regs
))
114 error ("Can't find registers in core file");
116 memcpy (registers
, (char *) regs
, 16 * 4);
117 supply_register (PS_REGNUM
, (char *) ®s
->r_ps
);
118 supply_register (PC_REGNUM
, (char *) ®s
->r_pc
);
124 #define fpustruct ((struct fpu *) core_reg_sect)
126 if (core_reg_size
>= sizeof (struct fpu
))
129 memcpy (®isters
[REGISTER_BYTE (FP0_REGNUM
)],
130 fpustruct
->f_fpstatus
.fps_regs
,
131 sizeof fpustruct
->f_fpstatus
.fps_regs
);
132 memcpy (®isters
[REGISTER_BYTE (FPC_REGNUM
)],
133 &fpustruct
->f_fpstatus
.fps_control
,
134 sizeof fpustruct
->f_fpstatus
-
135 sizeof fpustruct
->f_fpstatus
.fps_regs
);
139 fprintf_unfiltered (gdb_stderr
, "Couldn't read float regs from core file\n");
144 /* Register that we are able to handle sun3 core file formats.
145 FIXME: is this really bfd_target_unknown_flavour? */
147 static struct core_fns sun3_core_fns
=
149 bfd_target_unknown_flavour
, /* core_flavour */
150 default_check_format
, /* check_format */
151 default_core_sniffer
, /* core_sniffer */
152 fetch_core_registers
, /* core_read_registers */
157 _initialize_core_sun3 ()
159 add_core_fns (&sun3_core_fns
);