| /* Native-dependent code for Alpha BSD's. |
| |
| Copyright 2000, 2001, 2002, 2004, 2005 Free Software Foundation, 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 "defs.h" |
| #include "inferior.h" |
| #include "regcache.h" |
| |
| #include "alpha-tdep.h" |
| #include "alphabsd-tdep.h" |
| #include "inf-ptrace.h" |
| |
| #include <sys/types.h> |
| #include <sys/ptrace.h> |
| #include <machine/reg.h> |
| |
| #ifdef HAVE_SYS_PROCFS_H |
| #include <sys/procfs.h> |
| #endif |
| |
| #ifndef HAVE_GREGSET_T |
| typedef struct reg gregset_t; |
| #endif |
| |
| #ifndef HAVE_FPREGSET_T |
| typedef struct fpreg fpregset_t; |
| #endif |
| |
| #include "gregset.h" |
| |
| /* Provide *regset() wrappers around the generic Alpha BSD register |
| supply/fill routines. */ |
| |
| void |
| supply_gregset (gregset_t *gregsetp) |
| { |
| alphabsd_supply_reg ((char *) gregsetp, -1); |
| } |
| |
| void |
| fill_gregset (gregset_t *gregsetp, int regno) |
| { |
| alphabsd_fill_reg ((char *) gregsetp, regno); |
| } |
| |
| void |
| supply_fpregset (fpregset_t *fpregsetp) |
| { |
| alphabsd_supply_fpreg ((char *) fpregsetp, -1); |
| } |
| |
| void |
| fill_fpregset (fpregset_t *fpregsetp, int regno) |
| { |
| alphabsd_fill_fpreg ((char *) fpregsetp, regno); |
| } |
| |
| /* Determine if PT_GETREGS fetches this register. */ |
| |
| static int |
| getregs_supplies (int regno) |
| { |
| return ((regno >= ALPHA_V0_REGNUM && regno <= ALPHA_ZERO_REGNUM) |
| || regno >= ALPHA_PC_REGNUM); |
| } |
| |
| /* Fetch register REGNO from the inferior. If REGNO is -1, do this |
| for all registers (including the floating point registers). */ |
| |
| static void |
| alphabsd_fetch_inferior_registers (int regno) |
| { |
| if (regno == -1 || getregs_supplies (regno)) |
| { |
| struct reg gregs; |
| |
| if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), |
| (PTRACE_TYPE_ARG3) &gregs, 0) == -1) |
| perror_with_name (_("Couldn't get registers")); |
| |
| alphabsd_supply_reg ((char *) &gregs, regno); |
| if (regno != -1) |
| return; |
| } |
| |
| if (regno == -1 || regno >= FP0_REGNUM) |
| { |
| struct fpreg fpregs; |
| |
| if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
| perror_with_name (_("Couldn't get floating point status")); |
| |
| alphabsd_supply_fpreg ((char *) &fpregs, regno); |
| } |
| } |
| |
| /* Store register REGNO back into the inferior. If REGNO is -1, do |
| this for all registers (including the floating point registers). */ |
| |
| static void |
| alphabsd_store_inferior_registers (int regno) |
| { |
| if (regno == -1 || getregs_supplies (regno)) |
| { |
| struct reg gregs; |
| if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), |
| (PTRACE_TYPE_ARG3) &gregs, 0) == -1) |
| perror_with_name (_("Couldn't get registers")); |
| |
| alphabsd_fill_reg ((char *) &gregs, regno); |
| |
| if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), |
| (PTRACE_TYPE_ARG3) &gregs, 0) == -1) |
| perror_with_name (_("Couldn't write registers")); |
| |
| if (regno != -1) |
| return; |
| } |
| |
| if (regno == -1 || regno >= FP0_REGNUM) |
| { |
| struct fpreg fpregs; |
| |
| if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
| perror_with_name (_("Couldn't get floating point status")); |
| |
| alphabsd_fill_fpreg ((char *) &fpregs, regno); |
| |
| if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid), |
| (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
| perror_with_name (_("Couldn't write floating point status")); |
| } |
| } |
| |
| /* Provide a prototype to silence -Wmissing-prototypes. */ |
| void _initialize_alphabsd_nat (void); |
| |
| void |
| _initialize_alphabsd_nat (void) |
| { |
| struct target_ops *t; |
| |
| t = inf_ptrace_target (); |
| t->to_fetch_registers = alphabsd_fetch_inferior_registers; |
| t->to_store_registers = alphabsd_store_inferior_registers; |
| add_target (t); |
| } |