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
;
39 deprecated_registers_fetched ();
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 (deprecated_registers
, &inferior_registers
, 16 * 4);
50 memcpy (&deprecated_registers
[REGISTER_BYTE (FP0_REGNUM
)],
51 &inferior_fp_registers
, sizeof inferior_fp_registers
.fps_regs
);
53 *(int *) &deprecated_registers
[REGISTER_BYTE (PS_REGNUM
)] = inferior_registers
.r_ps
;
54 *(int *) &deprecated_registers
[REGISTER_BYTE (PC_REGNUM
)] = inferior_registers
.r_pc
;
56 memcpy (&deprecated_registers
[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
, deprecated_registers
, 16 * 4);
74 memcpy (&inferior_fp_registers
,
75 &deprecated_registers
[REGISTER_BYTE (FP0_REGNUM
)],
76 sizeof inferior_fp_registers
.fps_regs
);
78 inferior_registers
.r_ps
= *(int *) &&deprecated_registers
[REGISTER_BYTE (PS_REGNUM
)];
79 inferior_registers
.r_pc
= *(int *) &&deprecated_registers
[REGISTER_BYTE (PC_REGNUM
)];
82 memcpy (&inferior_fp_registers
.fps_control
,
83 &&deprecated_registers
[REGISTER_BYTE (FPC_REGNUM
)],
84 sizeof inferior_fp_registers
-
85 sizeof inferior_fp_registers
.fps_regs
);
87 ptrace (PTRACE_SETREGS
, PIDGET (inferior_ptid
),
88 (PTRACE_ARG3_TYPE
) & inferior_registers
);
90 ptrace (PTRACE_SETFPREGS
, PIDGET (inferior_ptid
),
91 (PTRACE_ARG3_TYPE
) & inferior_fp_registers
);
95 /* All of this stuff is only relevant if both host and target are sun3. */
97 /* Provide registers to GDB from a core file.
99 CORE_REG_SECT points to an array of bytes, which were obtained from
100 a core file which BFD thinks might contain register contents.
101 CORE_REG_SIZE is its size.
103 WHICH says which register set corelow suspects this is:
104 0 --- the general-purpose register set
105 2 --- the floating-point register set
107 REG_ADDR isn't used. */
110 fetch_core_registers (char *core_reg_sect
, unsigned core_reg_size
,
111 int which
, CORE_ADDR reg_addr
)
113 struct regs
*regs
= (struct regs
*) core_reg_sect
;
117 if (core_reg_size
< sizeof (struct regs
))
118 error ("Can't find registers in core file");
120 memcpy (&deprecated_registers
, (char *) regs
, 16 * 4);
121 supply_register (PS_REGNUM
, (char *) ®s
->r_ps
);
122 supply_register (PC_REGNUM
, (char *) ®s
->r_pc
);
128 #define fpustruct ((struct fpu *) core_reg_sect)
130 if (core_reg_size
>= sizeof (struct fpu
))
134 memcpy (&&deprecated_registers
[REGISTER_BYTE (FP0_REGNUM
)],
135 fpustruct
->f_fpstatus
.fps_regs
,
136 sizeof fpustruct
->f_fpstatus
.fps_regs
);
137 memcpy (&&deprecated_registers
[REGISTER_BYTE (FPC_REGNUM
)],
138 &fpustruct
->f_fpstatus
.fps_control
,
139 sizeof fpustruct
->f_fpstatus
-
140 sizeof fpustruct
->f_fpstatus
.fps_regs
);
144 fprintf_unfiltered (gdb_stderr
,
145 "Couldn't read float regs from core file\n");
150 /* Register that we are able to handle sun3 core file formats.
151 FIXME: is this really bfd_target_unknown_flavour? */
153 static struct core_fns sun3_core_fns
=
155 bfd_target_unknown_flavour
, /* core_flavour */
156 default_check_format
, /* check_format */
157 default_core_sniffer
, /* core_sniffer */
158 fetch_core_registers
, /* core_read_registers */
163 _initialize_core_sun3 (void)
165 add_core_fns (&sun3_core_fns
);