1 /* Host-dependent code for Sun-3 for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1996, 1999, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
27 #include <sys/ptrace.h>
28 #define KERNEL /* To get floating point reg definitions */
29 #include <machine/reg.h>
31 static void fetch_core_registers (char *, unsigned, int, CORE_ADDR
);
34 fetch_inferior_registers (int regno
)
36 struct regs inferior_registers
;
37 struct fp_status inferior_fp_registers
;
41 ptrace (PTRACE_GETREGS
, PIDGET (inferior_ptid
),
42 (PTRACE_ARG3_TYPE
) & inferior_registers
);
45 ptrace (PTRACE_GETFPREGS
, PIDGET (inferior_ptid
),
46 (PTRACE_ARG3_TYPE
) & inferior_fp_registers
);
48 memcpy (registers
, &inferior_registers
, 16 * 4);
50 memcpy (®isters
[REGISTER_BYTE (FP0_REGNUM
)], &inferior_fp_registers
,
51 sizeof inferior_fp_registers
.fps_regs
);
53 *(int *) ®isters
[REGISTER_BYTE (PS_REGNUM
)] = inferior_registers
.r_ps
;
54 *(int *) ®isters
[REGISTER_BYTE (PC_REGNUM
)] = inferior_registers
.r_pc
;
56 memcpy (®isters
[REGISTER_BYTE (FPC_REGNUM
)],
57 &inferior_fp_registers
.fps_control
,
58 sizeof inferior_fp_registers
-
59 sizeof inferior_fp_registers
.fps_regs
);
62 /* Store our register values back into the inferior.
63 If REGNO is -1, do this for all registers.
64 Otherwise, REGNO specifies which register (so we can save time). */
67 store_inferior_registers (int 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
, PIDGET (inferior_ptid
),
87 (PTRACE_ARG3_TYPE
) & inferior_registers
);
89 ptrace (PTRACE_SETFPREGS
, PIDGET (inferior_ptid
),
90 (PTRACE_ARG3_TYPE
) & inferior_fp_registers
);
94 /* All of this stuff is only relevant if both host and target are sun3. */
96 /* Provide registers to GDB from a core file.
98 CORE_REG_SECT points to an array of bytes, which were obtained from
99 a core file which BFD thinks might contain register contents.
100 CORE_REG_SIZE is its size.
102 WHICH says which register set corelow suspects this is:
103 0 --- the general-purpose register set
104 2 --- the floating-point register set
106 REG_ADDR isn't used. */
109 fetch_core_registers (char *core_reg_sect
, unsigned core_reg_size
,
110 int which
, CORE_ADDR reg_addr
)
112 struct regs
*regs
= (struct regs
*) core_reg_sect
;
116 if (core_reg_size
< sizeof (struct regs
))
117 error ("Can't find registers in core file");
119 memcpy (registers
, (char *) regs
, 16 * 4);
120 supply_register (PS_REGNUM
, (char *) ®s
->r_ps
);
121 supply_register (PC_REGNUM
, (char *) ®s
->r_pc
);
127 #define fpustruct ((struct fpu *) core_reg_sect)
129 if (core_reg_size
>= sizeof (struct fpu
))
133 memcpy (®isters
[REGISTER_BYTE (FP0_REGNUM
)],
134 fpustruct
->f_fpstatus
.fps_regs
,
135 sizeof fpustruct
->f_fpstatus
.fps_regs
);
136 memcpy (®isters
[REGISTER_BYTE (FPC_REGNUM
)],
137 &fpustruct
->f_fpstatus
.fps_control
,
138 sizeof fpustruct
->f_fpstatus
-
139 sizeof fpustruct
->f_fpstatus
.fps_regs
);
143 fprintf_unfiltered (gdb_stderr
,
144 "Couldn't read float regs from core file\n");
149 /* Register that we are able to handle sun3 core file formats.
150 FIXME: is this really bfd_target_unknown_flavour? */
152 static struct core_fns sun3_core_fns
=
154 bfd_target_unknown_flavour
, /* core_flavour */
155 default_check_format
, /* check_format */
156 default_core_sniffer
, /* core_sniffer */
157 fetch_core_registers
, /* core_read_registers */
162 _initialize_core_sun3 (void)
164 add_core_fns (&sun3_core_fns
);