1 /* Host-dependent code for Sun-3 for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1989, 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
24 #include <sys/ptrace.h>
25 #define KERNEL /* To get floating point reg definitions */
26 #include <machine/reg.h>
30 #if defined (GDB_TARGET_IS_SUN3)
31 /* All of this stuff is only relevant if both host and target are sun3. */
33 fetch_inferior_registers ()
35 struct regs inferior_registers
;
37 struct fp_status inferior_fp_registers
;
39 extern char registers
[];
43 ptrace (PTRACE_GETREGS
, inferior_pid
,
44 (PTRACE_ARG3_TYPE
) &inferior_registers
);
46 ptrace (PTRACE_GETFPREGS
, inferior_pid
,
47 (PTRACE_ARG3_TYPE
) &inferior_fp_registers
);
50 bcopy (&inferior_registers
, registers
, 16 * 4);
52 bcopy (&inferior_fp_registers
, ®isters
[REGISTER_BYTE (FP0_REGNUM
)],
53 sizeof inferior_fp_registers
.fps_regs
);
55 *(int *)®isters
[REGISTER_BYTE (PS_REGNUM
)] = inferior_registers
.r_ps
;
56 *(int *)®isters
[REGISTER_BYTE (PC_REGNUM
)] = inferior_registers
.r_pc
;
58 bcopy (&inferior_fp_registers
.fps_control
,
59 ®isters
[REGISTER_BYTE (FPC_REGNUM
)],
60 sizeof inferior_fp_registers
- sizeof inferior_fp_registers
.fps_regs
);
64 /* Store our register values back into the inferior.
65 If REGNO is -1, do this for all registers.
66 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 bcopy (registers
, &inferior_registers
, 16 * 4);
79 bcopy (®isters
[REGISTER_BYTE (FP0_REGNUM
)], &inferior_fp_registers
,
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 bcopy (®isters
[REGISTER_BYTE (FPC_REGNUM
)],
87 &inferior_fp_registers
.fps_control
,
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
);
99 /* Machine-dependent code for pulling registers out of a Sun-3 core file. */
102 fetch_core_registers (core_reg_sect
, core_reg_size
, which
)
104 unsigned core_reg_size
;
107 extern char registers
[];
108 struct regs
*regs
= (struct regs
*) core_reg_sect
;
111 if (core_reg_size
< sizeof (struct regs
))
112 error ("Can't find registers in core file");
114 bcopy ((char *)regs
, registers
, 16 * 4);
115 supply_register (PS_REGNUM
, ®s
->r_ps
);
116 supply_register (PC_REGNUM
, ®s
->r_pc
);
118 } else if (which
== 2) {
120 #define fpustruct ((struct fpu *) core_reg_sect)
122 if (core_reg_size
>= sizeof (struct fpu
))
125 bcopy (fpustruct
->f_fpstatus
.fps_regs
,
126 ®isters
[REGISTER_BYTE (FP0_REGNUM
)],
127 sizeof fpustruct
->f_fpstatus
.fps_regs
);
128 bcopy (&fpustruct
->f_fpstatus
.fps_control
,
129 ®isters
[REGISTER_BYTE (FPC_REGNUM
)],
130 sizeof fpustruct
->f_fpstatus
-
131 sizeof fpustruct
->f_fpstatus
.fps_regs
);
135 fprintf (stderr
, "Couldn't read float regs from core file\n");
138 #else /* Not sun3 target. */
139 /* These functions shouldn't be called when we're cross-debugging. */
142 fetch_inferior_registers ()
147 store_inferior_registers (regno
)
154 fetch_core_registers (core_reg_sect
, core_reg_size
, which
)
156 unsigned core_reg_size
;
160 #endif /* Not sun3 target. */