| /* Native-dependent code for PowerPC's running NetBSD, for GDB. |
| Copyright 2002 Free Software Foundation, Inc. |
| Contributed by Wasabi Systems, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include <sys/types.h> |
| #include <sys/ptrace.h> |
| #include <machine/reg.h> |
| |
| #include "defs.h" |
| #include "inferior.h" |
| |
| #include "ppc-tdep.h" |
| #include "ppcnbsd-tdep.h" |
| |
| /* Returns true if PT_GETREGS fetches this register. */ |
| static int |
| getregs_supplies (int regno) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
| |
| return ((regno >= 0 && regno <= 31) |
| || regno == tdep->ppc_lr_regnum |
| || regno == tdep->ppc_cr_regnum |
| || regno == tdep->ppc_xer_regnum |
| || regno == tdep->ppc_ctr_regnum |
| || regno == PC_REGNUM); |
| } |
| |
| /* Like above, but for PT_GETFPREGS. */ |
| static int |
| getfpregs_supplies (int regno) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
| |
| return ((regno >= FP0_REGNUM && regno <= FP0_REGNUM + 31) |
| || regno == tdep->ppc_fpscr_regnum); |
| } |
| |
| void |
| fetch_inferior_registers (int regno) |
| { |
| if (regno == -1 || getregs_supplies (regno)) |
| { |
| struct reg regs; |
| |
| if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) ®s, 0) == -1) |
| perror_with_name ("Couldn't get registers"); |
| |
| ppcnbsd_supply_reg ((char *) ®s, regno); |
| if (regno != -1) |
| return; |
| } |
| |
| if (regno == -1 || getfpregs_supplies (regno)) |
| { |
| struct fpreg fpregs; |
| |
| if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) |
| perror_with_name ("Couldn't get FP registers"); |
| |
| ppcnbsd_supply_fpreg ((char *) &fpregs, regno); |
| if (regno != -1) |
| return; |
| } |
| } |
| |
| void |
| store_inferior_registers (int regno) |
| { |
| if (regno == -1 || getregs_supplies (regno)) |
| { |
| struct reg regs; |
| |
| if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) ®s, 0) == -1) |
| perror_with_name ("Couldn't get registers"); |
| |
| ppcnbsd_fill_reg ((char *) ®s, regno); |
| |
| if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) ®s, 0) == -1) |
| perror_with_name ("Couldn't write registers"); |
| |
| if (regno != -1) |
| return; |
| } |
| |
| if (regno == -1 || getfpregs_supplies (regno)) |
| { |
| struct fpreg fpregs; |
| |
| if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) |
| perror_with_name ("Couldn't get FP registers"); |
| |
| ppcnbsd_fill_fpreg ((char *) &fpregs, regno); |
| |
| if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_ARG3_TYPE) &fpregs, 0) == -1) |
| perror_with_name ("Couldn't set FP registers"); |
| } |
| } |