1 /* Native-dependent code for PowerPC's running NetBSD, for GDB.
2 Copyright 2002 Free Software Foundation, Inc.
3 Contributed by Wasabi Systems, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #include <sys/types.h>
23 #include <sys/ptrace.h>
24 #include <machine/reg.h>
28 #include "gdb_assert.h"
31 #include "ppcnbsd-tdep.h"
33 /* Returns true if PT_GETREGS fetches this register. */
35 getregs_supplies (int regno)
37 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
39 return ((regno >= 0 && regno <= 31)
40 || regno == tdep->ppc_lr_regnum
41 || regno == tdep->ppc_cr_regnum
42 || regno == tdep->ppc_xer_regnum
43 || regno == tdep->ppc_ctr_regnum
44 || regno == PC_REGNUM);
47 /* Like above, but for PT_GETFPREGS. */
49 getfpregs_supplies (int regno)
51 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
53 /* FIXME: jimb/2004-05-05: Some PPC variants don't have
54 floating-point registers. For such variants,
55 tdep->ppc_fp0_regnum and tdep->ppc_fpscr_regnum will be -1. I
56 don't think NetBSD runs on any of those chips, but we can at
57 least make sure that if someone tries it, they'll get a proper
59 gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
61 return ((regno >= tdep->ppc_fp0_regnum
62 && regno < tdep->ppc_fp0_regnum + ppc_num_fprs)
63 || regno == tdep->ppc_fpscr_regnum);
67 fetch_inferior_registers (int regno)
69 if (regno == -1 || getregs_supplies (regno))
73 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
74 (PTRACE_ARG3_TYPE) ®s, 0) == -1)
75 perror_with_name ("Couldn't get registers");
77 ppcnbsd_supply_reg ((char *) ®s, regno);
82 if (regno == -1 || getfpregs_supplies (regno))
86 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
87 (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
88 perror_with_name ("Couldn't get FP registers");
90 ppcnbsd_supply_fpreg ((char *) &fpregs, regno);
97 store_inferior_registers (int regno)
99 if (regno == -1 || getregs_supplies (regno))
103 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
104 (PTRACE_ARG3_TYPE) ®s, 0) == -1)
105 perror_with_name ("Couldn't get registers");
107 ppcnbsd_fill_reg ((char *) ®s, regno);
109 if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
110 (PTRACE_ARG3_TYPE) ®s, 0) == -1)
111 perror_with_name ("Couldn't write registers");
117 if (regno == -1 || getfpregs_supplies (regno))
121 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
122 (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
123 perror_with_name ("Couldn't get FP registers");
125 ppcnbsd_fill_fpreg ((char *) &fpregs, regno);
127 if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
128 (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
129 perror_with_name ("Couldn't set FP registers");