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 (regno
)
36 struct regs inferior_registers
;
38 struct fp_status inferior_fp_registers
;
40 extern char registers
[];
44 ptrace (PTRACE_GETREGS
, inferior_pid
,
45 (PTRACE_ARG3_TYPE
) &inferior_registers
);
47 ptrace (PTRACE_GETFPREGS
, inferior_pid
,
48 (PTRACE_ARG3_TYPE
) &inferior_fp_registers
);
51 bcopy (&inferior_registers
, registers
, 16 * 4);
53 bcopy (&inferior_fp_registers
, ®isters
[REGISTER_BYTE (FP0_REGNUM
)],
54 sizeof inferior_fp_registers
.fps_regs
);
56 *(int *)®isters
[REGISTER_BYTE (PS_REGNUM
)] = inferior_registers
.r_ps
;
57 *(int *)®isters
[REGISTER_BYTE (PC_REGNUM
)] = inferior_registers
.r_pc
;
59 bcopy (&inferior_fp_registers
.fps_control
,
60 ®isters
[REGISTER_BYTE (FPC_REGNUM
)],
61 sizeof inferior_fp_registers
- sizeof inferior_fp_registers
.fps_regs
);
65 /* Store our register values back into the inferior.
66 If REGNO is -1, do this for all registers.
67 Otherwise, REGNO specifies which register (so we can save time). */
70 store_inferior_registers (regno
)
73 struct regs inferior_registers
;
75 struct fp_status inferior_fp_registers
;
77 extern char registers
[];
79 bcopy (registers
, &inferior_registers
, 16 * 4);
81 bcopy (®isters
[REGISTER_BYTE (FP0_REGNUM
)], &inferior_fp_registers
,
82 sizeof inferior_fp_registers
.fps_regs
);
84 inferior_registers
.r_ps
= *(int *)®isters
[REGISTER_BYTE (PS_REGNUM
)];
85 inferior_registers
.r_pc
= *(int *)®isters
[REGISTER_BYTE (PC_REGNUM
)];
88 bcopy (®isters
[REGISTER_BYTE (FPC_REGNUM
)],
89 &inferior_fp_registers
.fps_control
,
90 sizeof inferior_fp_registers
- sizeof inferior_fp_registers
.fps_regs
);
93 ptrace (PTRACE_SETREGS
, inferior_pid
,
94 (PTRACE_ARG3_TYPE
) &inferior_registers
);
96 ptrace (PTRACE_SETFPREGS
, inferior_pid
,
97 (PTRACE_ARG3_TYPE
) &inferior_fp_registers
);
101 /* Machine-dependent code for pulling registers out of a Sun-3 core file. */
104 fetch_core_registers (core_reg_sect
, core_reg_size
, which
, reg_addr
)
106 unsigned core_reg_size
;
108 unsigned int reg_addr
; /* Unused in this version */
110 extern char registers
[];
111 struct regs
*regs
= (struct regs
*) core_reg_sect
;
114 if (core_reg_size
< sizeof (struct regs
))
115 error ("Can't find registers in core file");
117 bcopy ((char *)regs
, registers
, 16 * 4);
118 supply_register (PS_REGNUM
, (char *)®s
->r_ps
);
119 supply_register (PC_REGNUM
, (char *)®s
->r_pc
);
121 } else if (which
== 2) {
123 #define fpustruct ((struct fpu *) core_reg_sect)
125 if (core_reg_size
>= sizeof (struct fpu
))
128 bcopy (fpustruct
->f_fpstatus
.fps_regs
,
129 ®isters
[REGISTER_BYTE (FP0_REGNUM
)],
130 sizeof fpustruct
->f_fpstatus
.fps_regs
);
131 bcopy (&fpustruct
->f_fpstatus
.fps_control
,
132 ®isters
[REGISTER_BYTE (FPC_REGNUM
)],
133 sizeof fpustruct
->f_fpstatus
-
134 sizeof fpustruct
->f_fpstatus
.fps_regs
);
138 fprintf (stderr
, "Couldn't read float regs from core file\n");
141 #else /* Not sun3 target. */
142 /* These functions shouldn't be called when we're cross-debugging. */
146 fetch_inferior_registers (regno
)
153 store_inferior_registers (regno
)
160 fetch_core_registers (core_reg_sect
, core_reg_size
, which
, reg_addr
)
162 unsigned core_reg_size
;
164 unsigned int reg_addr
; /* Unused in this version */
167 #endif /* Not sun3 target. */