1 /* Native-dependent code for Alpha BSD's.
2 Copyright 2000, 2001 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. */
25 #include <sys/types.h>
26 #include <sys/ptrace.h>
27 #include <machine/reg.h>
29 #ifdef HAVE_SYS_PROCFS_H
30 #include <sys/procfs.h>
33 #ifndef HAVE_GREGSET_T
34 typedef struct reg gregset_t
;
37 #ifndef HAVE_FPREGSET_T
38 typedef struct fpreg fpregset_t
;
43 /* Number of general-purpose registers. */
46 /* Number of floating point registers. */
50 /* Transfering the registers between GDB, inferiors and core files. */
52 /* Fill GDB's register array with the general-purpose register values
56 supply_gregset (gregset_t
*gregsetp
)
60 for (i
= 0; i
< NUM_GREGS
; i
++)
62 if (CANNOT_FETCH_REGISTER (i
))
63 supply_register (i
, NULL
);
65 supply_register (i
, (char *) &gregsetp
->r_regs
[i
]);
68 /* The PC travels in the R_ZERO slot. */
69 supply_register (PC_REGNUM
, (char *) &gregsetp
->r_regs
[R_ZERO
]);
72 /* Fill register REGNO (if it is a general-purpose register) in
73 *GREGSETPS with the value in GDB's register array. If REGNO is -1,
74 do this for all registers. */
77 fill_gregset (gregset_t
*gregsetp
, int regno
)
81 for (i
= 0; i
< NUM_GREGS
; i
++)
82 if ((regno
== -1 || regno
== i
) && ! CANNOT_STORE_REGISTER (i
))
83 memcpy (&gregsetp
->r_regs
[i
], ®isters
[REGISTER_BYTE (i
)],
84 REGISTER_RAW_SIZE (i
));
86 /* The PC travels in the R_ZERO slot. */
87 if (regno
== -1 || regno
== PC_REGNUM
)
88 memcpy (&gregsetp
->r_regs
[R_ZERO
], ®isters
[REGISTER_BYTE (PC_REGNUM
)],
89 REGISTER_RAW_SIZE (PC_REGNUM
));
92 /* Fill GDB's register array with the floating-point register values
96 supply_fpregset (fpregset_t
*fpregsetp
)
100 for (i
= FP0_REGNUM
; i
< FP0_REGNUM
+ NUM_FPREGS
; i
++)
102 if (CANNOT_FETCH_REGISTER (i
))
103 supply_register (i
, NULL
);
105 supply_register (i
, (char *) &fpregsetp
->fpr_regs
[i
- FP0_REGNUM
]);
108 supply_register (FPCR_REGNUM
, (char *) &fpregsetp
->fpr_cr
);
111 /* Fill register REGNO (if it is a floating-point register) in
112 *FPREGSETP with the value in GDB's register array. If REGNO is -1,
113 do this for all registers. */
116 fill_fpregset (fpregset_t
*fpregsetp
, int regno
)
120 for (i
= FP0_REGNUM
; i
< FP0_REGNUM
+ NUM_FPREGS
; i
++)
121 if ((regno
== -1 || regno
== i
) && ! CANNOT_STORE_REGISTER (i
))
122 memcpy (&fpregsetp
->fpr_regs
[i
- FP0_REGNUM
],
123 ®isters
[REGISTER_BYTE (i
)], REGISTER_RAW_SIZE (i
));
125 if (regno
== -1 || regno
== FPCR_REGNUM
)
126 memcpy (&fpregsetp
->fpr_cr
, ®isters
[REGISTER_BYTE (FPCR_REGNUM
)],
127 REGISTER_RAW_SIZE (FPCR_REGNUM
));
130 /* Fetch register REGNO from the inferior. If REGNO is -1, do this
131 for all registers (including the floating point registers). */
134 fetch_inferior_registers (int regno
)
138 if (ptrace (PT_GETREGS
, inferior_pid
, (PTRACE_ARG3_TYPE
) &gregs
, 0) == -1)
139 perror_with_name ("Couldn't get registers");
141 supply_gregset (&gregs
);
143 if (regno
== -1 || regno
>= FP0_REGNUM
)
147 if (ptrace (PT_GETFPREGS
, inferior_pid
,
148 (PTRACE_ARG3_TYPE
) &fpregs
, 0) == -1)
149 perror_with_name ("Couldn't get floating point status");
151 supply_fpregset (&fpregs
);
154 /* Reset virtual frame pointer. */
155 supply_register (FP_REGNUM
, NULL
);
158 /* Store register REGNO back into the inferior. If REGNO is -1, do
159 this for all registers (including the floating point registers). */
162 store_inferior_registers (int regno
)
166 if (ptrace (PT_GETREGS
, inferior_pid
, (PTRACE_ARG3_TYPE
) &gregs
, 0) == -1)
167 perror_with_name ("Couldn't get registers");
169 fill_gregset (&gregs
, regno
);
171 if (ptrace (PT_SETREGS
, inferior_pid
, (PTRACE_ARG3_TYPE
) &gregs
, 0) == -1)
172 perror_with_name ("Couldn't write registers");
174 if (regno
== -1 || regno
>= FP0_REGNUM
)
178 if (ptrace (PT_GETFPREGS
, inferior_pid
,
179 (PTRACE_ARG3_TYPE
) &fpregs
, 0) == -1)
180 perror_with_name ("Couldn't get floating point status");
182 fill_fpregset (&fpregs
, regno
);
184 if (ptrace (PT_SETFPREGS
, inferior_pid
,
185 (PTRACE_ARG3_TYPE
) &fpregs
, 0) == -1)
186 perror_with_name ("Couldn't write floating point status");
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