1 /* Native-dependent code for Alpha BSD's.
2 Copyright 2000, 2001, 2002 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 regcache_collect (i
, (char *) &gregsetp
->r_regs
[i
]);
85 /* The PC travels in the R_ZERO slot. */
86 if (regno
== -1 || regno
== PC_REGNUM
)
87 regcache_collect (PC_REGNUM
, (char *) &gregsetp
->r_regs
[R_ZERO
]);
90 /* Fill GDB's register array with the floating-point register values
94 supply_fpregset (fpregset_t
*fpregsetp
)
98 for (i
= FP0_REGNUM
; i
< FP0_REGNUM
+ NUM_FPREGS
; i
++)
100 if (CANNOT_FETCH_REGISTER (i
))
101 supply_register (i
, NULL
);
103 supply_register (i
, (char *) &fpregsetp
->fpr_regs
[i
- FP0_REGNUM
]);
106 supply_register (FPCR_REGNUM
, (char *) &fpregsetp
->fpr_cr
);
109 /* Fill register REGNO (if it is a floating-point register) in
110 *FPREGSETP with the value in GDB's register array. If REGNO is -1,
111 do this for all registers. */
114 fill_fpregset (fpregset_t
*fpregsetp
, int regno
)
118 for (i
= FP0_REGNUM
; i
< FP0_REGNUM
+ NUM_FPREGS
; i
++)
119 if ((regno
== -1 || regno
== i
) && ! CANNOT_STORE_REGISTER (i
))
120 regcache_collect (i
, (char *) &fpregsetp
->fpr_regs
[i
- FP0_REGNUM
]);
122 if (regno
== -1 || regno
== FPCR_REGNUM
)
123 regcache_collect (FPCR_REGNUM
, (char *) &fpregsetp
->fpr_cr
);
127 /* Determine if PT_GETREGS fetches this register. */
130 getregs_supplies (int regno
)
133 return ((regno
>= V0_REGNUM
&& regno
<= ZERO_REGNUM
)
134 || regno
>= PC_REGNUM
);
138 /* Fetch register REGNO from the inferior. If REGNO is -1, do this
139 for all registers (including the floating point registers). */
142 fetch_inferior_registers (int regno
)
145 if (regno
== -1 || getregs_supplies (regno
))
149 if (ptrace (PT_GETREGS
, PIDGET (inferior_ptid
),
150 (PTRACE_ARG3_TYPE
) &gregs
, 0) == -1)
151 perror_with_name ("Couldn't get registers");
153 supply_gregset (&gregs
);
158 if (regno
== -1 || regno
>= FP0_REGNUM
)
162 if (ptrace (PT_GETFPREGS
, PIDGET (inferior_ptid
),
163 (PTRACE_ARG3_TYPE
) &fpregs
, 0) == -1)
164 perror_with_name ("Couldn't get floating point status");
166 supply_fpregset (&fpregs
);
169 /* Reset virtual frame pointer. */
170 supply_register (FP_REGNUM
, NULL
);
173 /* Store register REGNO back into the inferior. If REGNO is -1, do
174 this for all registers (including the floating point registers). */
177 store_inferior_registers (int regno
)
180 if (regno
== -1 || getregs_supplies (regno
))
183 if (ptrace (PT_GETREGS
, PIDGET (inferior_ptid
),
184 (PTRACE_ARG3_TYPE
) &gregs
, 0) == -1)
185 perror_with_name ("Couldn't get registers");
187 fill_gregset (&gregs
, regno
);
189 if (ptrace (PT_SETREGS
, PIDGET (inferior_ptid
),
190 (PTRACE_ARG3_TYPE
) &gregs
, 0) == -1)
191 perror_with_name ("Couldn't write registers");
197 if (regno
== -1 || regno
>= FP0_REGNUM
)
201 if (ptrace (PT_GETFPREGS
, PIDGET (inferior_ptid
),
202 (PTRACE_ARG3_TYPE
) &fpregs
, 0) == -1)
203 perror_with_name ("Couldn't get floating point status");
205 fill_fpregset (&fpregs
, regno
);
207 if (ptrace (PT_SETFPREGS
, PIDGET (inferior_ptid
),
208 (PTRACE_ARG3_TYPE
) &fpregs
, 0) == -1)
209 perror_with_name ("Couldn't write floating point status");
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