1 /* Native-dependent code for Alpha BSD's.
2 Copyright (C) 2000 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. */
24 #include <sys/types.h>
25 #include <sys/ptrace.h>
26 #include <machine/reg.h>
28 #ifdef HAVE_SYS_PROCFS_H
29 #include <sys/procfs.h>
32 #ifndef HAVE_GREGSET_T
33 typedef struct reg gregset_t
;
36 #ifndef HAVE_FPREGSET_T
37 typedef struct fpreg fpregset_t
;
42 /* Number of general-purpose registers. */
45 /* Number of floating point registers. */
49 /* Transfering the registers between GDB, inferiors and core files. */
51 /* Fill GDB's register array with the genereal-purpose register values
55 supply_gregset (gregset_t
*gregsetp
)
59 for (i
= 0; i
< NUM_GREGS
; i
++)
61 if (CANNOT_FETCH_REGISTER (i
))
62 supply_register (i
, NULL
);
64 supply_register (i
, (char *) &gregsetp
->r_regs
[i
]);
67 /* The PC travels in the R_ZERO slot. */
68 supply_register (PC_REGNUM
, (char *) &gregsetp
->r_regs
[R_ZERO
]);
71 /* Fill register REGNO (if it is a general-purpose register) in
72 *GREGSETPS with the value in GDB's register array. If REGNO is -1,
73 do this for all registers. */
76 fill_gregset (gregset_t
*gregsetp
, int regno
)
80 for (i
= 0; i
< NUM_GREGS
; i
++)
81 if ((regno
== -1 || regno
== i
) && ! CANNOT_STORE_REGISTER (i
))
82 memcpy (&gregsetp
->r_regs
[i
], ®isters
[REGISTER_BYTE (i
)],
83 REGISTER_RAW_SIZE (i
));
85 /* The PC travels in the R_ZERO slot. */
86 if (regno
== -1 || regno
== PC_REGNUM
)
87 memcpy (&gregsetp
->r_regs
[R_ZERO
], ®isters
[REGISTER_BYTE (PC_REGNUM
)],
88 REGISTER_RAW_SIZE (PC_REGNUM
));
91 /* Fill GDB's register array with the floating-point register values
95 supply_fpregset (fpregset_t
*fpregsetp
)
99 for (i
= FP0_REGNUM
; i
< FP0_REGNUM
+ NUM_FPREGS
; i
++)
101 if (CANNOT_FETCH_REGISTER (i
))
102 supply_register (i
, NULL
);
104 supply_register (i
, (char *) &fpregsetp
->fpr_regs
[i
- FP0_REGNUM
]);
107 supply_register (FPCR_REGNUM
, (char *) &fpregsetp
->fpr_cr
);
110 /* Fill register REGNO (if it is a floating-point register) in
111 *FPREGSETP with the value in GDB's register array. If REGNO is -1,
112 do this for all registers. */
115 fill_fpregset (fpregset_t
*fpregsetp
, int regno
)
119 for (i
= FP0_REGNUM
; i
< FP0_REGNUM
+ NUM_FPREGS
; i
++)
120 if ((regno
== -1 || regno
== i
) && ! CANNOT_STORE_REGISTER (i
))
121 memcpy (&fpregsetp
->fpr_regs
[i
- FP0_REGNUM
],
122 ®isters
[REGISTER_BYTE (i
)], REGISTER_RAW_SIZE (i
));
124 if (regno
== -1 || regno
== FPCR_REGNUM
)
125 memcpy (&fpregsetp
->fpr_cr
, ®isters
[REGISTER_BYTE (FPCR_REGNUM
)],
126 REGISTER_RAW_SIZE (FPCR_REGNUM
));
129 /* Fetch register REGNO from the inferior. If REGNO is -1, do this
130 for all registers (including the floating point registers). */
133 fetch_inferior_registers (int regno
)
137 if (ptrace (PT_GETREGS
, inferior_pid
, (PTRACE_ARG3_TYPE
) &gregs
, 0) == -1)
138 perror_with_name ("Couldn't get registers");
140 supply_gregset (&gregs
);
142 if (regno
== -1 || regno
>= FP0_REGNUM
)
146 if (ptrace (PT_GETFPREGS
, inferior_pid
,
147 (PTRACE_ARG3_TYPE
) &fpregs
, 0) == -1)
148 perror_with_name ("Couldn't get floating point status");
150 supply_fpregset (&fpregs
);
153 /* Reset virtual frame pointer. */
154 supply_register (FP_REGNUM
, NULL
);
157 /* Store register REGNO back into the inferior. If REGNO is -1, do
158 this for all registers (including the floating point registers). */
161 store_inferior_registers (int regno
)
165 if (ptrace (PT_GETREGS
, inferior_pid
, (PTRACE_ARG3_TYPE
) &gregs
, 0) == -1)
166 perror_with_name ("Couldn't get registers");
168 fill_gregset (&gregs
, regno
);
170 if (ptrace (PT_SETREGS
, inferior_pid
, (PTRACE_ARG3_TYPE
) &gregs
, 0) == -1)
171 perror_with_name ("Couldn't write registers");
173 if (regno
== -1 || regno
>= FP0_REGNUM
)
177 if (ptrace (PT_GETFPREGS
, inferior_pid
,
178 (PTRACE_ARG3_TYPE
) &fpregs
, 0) == -1)
179 perror_with_name ("Couldn't get floating point status");
181 fill_fpregset (&fpregs
, regno
);
183 if (ptrace (PT_SETFPREGS
, inferior_pid
,
184 (PTRACE_ARG3_TYPE
) &fpregs
, 0) == -1)
185 perror_with_name ("Couldn't write floating point status");
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