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 (char *, unsigned, int, CORE_ADDR
);
32 fetch_inferior_registers (regno
)
35 struct regs inferior_registers
;
36 struct fp_status inferior_fp_registers
;
40 ptrace (PTRACE_GETREGS
, inferior_pid
,
41 (PTRACE_ARG3_TYPE
) & inferior_registers
);
44 ptrace (PTRACE_GETFPREGS
, inferior_pid
,
45 (PTRACE_ARG3_TYPE
) & inferior_fp_registers
);
47 memcpy (registers
, &inferior_registers
, 16 * 4);
49 memcpy (®isters
[REGISTER_BYTE (FP0_REGNUM
)], &inferior_fp_registers
,
50 sizeof inferior_fp_registers
.fps_regs
);
52 *(int *) ®isters
[REGISTER_BYTE (PS_REGNUM
)] = inferior_registers
.r_ps
;
53 *(int *) ®isters
[REGISTER_BYTE (PC_REGNUM
)] = inferior_registers
.r_pc
;
55 memcpy (®isters
[REGISTER_BYTE (FPC_REGNUM
)],
56 &inferior_fp_registers
.fps_control
,
57 sizeof inferior_fp_registers
-
58 sizeof inferior_fp_registers
.fps_regs
);
61 /* Store our register values back into the inferior.
62 If REGNO is -1, do this for all registers.
63 Otherwise, REGNO specifies which register (so we can save time). */
66 store_inferior_registers (regno
)
69 struct regs inferior_registers
;
70 struct fp_status inferior_fp_registers
;
72 memcpy (&inferior_registers
, registers
, 16 * 4);
74 memcpy (&inferior_fp_registers
, ®isters
[REGISTER_BYTE (FP0_REGNUM
)],
75 sizeof inferior_fp_registers
.fps_regs
);
77 inferior_registers
.r_ps
= *(int *) ®isters
[REGISTER_BYTE (PS_REGNUM
)];
78 inferior_registers
.r_pc
= *(int *) ®isters
[REGISTER_BYTE (PC_REGNUM
)];
81 memcpy (&inferior_fp_registers
.fps_control
,
82 ®isters
[REGISTER_BYTE (FPC_REGNUM
)],
83 sizeof inferior_fp_registers
-
84 sizeof inferior_fp_registers
.fps_regs
);
86 ptrace (PTRACE_SETREGS
, inferior_pid
,
87 (PTRACE_ARG3_TYPE
) & inferior_registers
);
89 ptrace (PTRACE_SETFPREGS
, inferior_pid
,
90 (PTRACE_ARG3_TYPE
) & inferior_fp_registers
);
94 /* All of this stuff is only relevant if both host and target are sun3. */
95 /* Machine-dependent code for pulling registers out of a Sun-3 core file. */
98 fetch_core_registers (core_reg_sect
, core_reg_size
, which
, reg_addr
)
100 unsigned core_reg_size
;
102 CORE_ADDR reg_addr
; /* Unused in this version */
104 struct regs
*regs
= (struct regs
*) core_reg_sect
;
108 if (core_reg_size
< sizeof (struct regs
))
109 error ("Can't find registers in core file");
111 memcpy (registers
, (char *) regs
, 16 * 4);
112 supply_register (PS_REGNUM
, (char *) ®s
->r_ps
);
113 supply_register (PC_REGNUM
, (char *) ®s
->r_pc
);
119 #define fpustruct ((struct fpu *) core_reg_sect)
121 if (core_reg_size
>= sizeof (struct fpu
))
125 memcpy (®isters
[REGISTER_BYTE (FP0_REGNUM
)],
126 fpustruct
->f_fpstatus
.fps_regs
,
127 sizeof fpustruct
->f_fpstatus
.fps_regs
);
128 memcpy (®isters
[REGISTER_BYTE (FPC_REGNUM
)],
129 &fpustruct
->f_fpstatus
.fps_control
,
130 sizeof fpustruct
->f_fpstatus
-
131 sizeof fpustruct
->f_fpstatus
.fps_regs
);
135 fprintf_unfiltered (gdb_stderr
,
136 "Couldn't read float regs from core file\n");
141 /* Register that we are able to handle sun3 core file formats.
142 FIXME: is this really bfd_target_unknown_flavour? */
144 static struct core_fns sun3_core_fns
=
146 bfd_target_unknown_flavour
, /* core_flavour */
147 default_check_format
, /* check_format */
148 default_core_sniffer
, /* core_sniffer */
149 fetch_core_registers
, /* core_read_registers */
154 _initialize_core_sun3 ()
156 add_core_fns (&sun3_core_fns
);