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");