| /* Native-dependent code for modern VAX BSD's. |
| |
| Copyright (C) 2004-2005, 2007-2012 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "inferior.h" |
| #include "regcache.h" |
| #include "target.h" |
| |
| #include <sys/types.h> |
| #include <sys/ptrace.h> |
| #include <machine/reg.h> |
| |
| #include "vax-tdep.h" |
| #include "inf-ptrace.h" |
| |
| /* Supply the general-purpose registers stored in GREGS to REGCACHE. */ |
| |
| static void |
| vaxbsd_supply_gregset (struct regcache *regcache, const void *gregs) |
| { |
| const gdb_byte *regs = gregs; |
| int regnum; |
| |
| for (regnum = 0; regnum < VAX_NUM_REGS; regnum++) |
| regcache_raw_supply (regcache, regnum, regs + regnum * 4); |
| } |
| |
| /* Collect the general-purpose registers from REGCACHE and store them |
| in GREGS. */ |
| |
| static void |
| vaxbsd_collect_gregset (const struct regcache *regcache, |
| void *gregs, int regnum) |
| { |
| gdb_byte *regs = gregs; |
| int i; |
| |
| for (i = 0; i <= VAX_NUM_REGS; i++) |
| { |
| if (regnum == -1 || regnum == i) |
| regcache_raw_collect (regcache, i, regs + i * 4); |
| } |
| } |
| |
| |
| /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this |
| for all registers. */ |
| |
| static void |
| vaxbsd_fetch_inferior_registers (struct target_ops *ops, |
| struct regcache *regcache, int regnum) |
| { |
| struct reg regs; |
| |
| if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), |
| (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
| perror_with_name (_("Couldn't get registers")); |
| |
| vaxbsd_supply_gregset (regcache, ®s); |
| } |
| |
| /* Store register REGNUM back into the inferior. If REGNUM is -1, do |
| this for all registers. */ |
| |
| static void |
| vaxbsd_store_inferior_registers (struct target_ops *ops, |
| struct regcache *regcache, int regnum) |
| { |
| struct reg regs; |
| |
| if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), |
| (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
| perror_with_name (_("Couldn't get registers")); |
| |
| vaxbsd_collect_gregset (regcache, ®s, regnum); |
| |
| if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), |
| (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
| perror_with_name (_("Couldn't write registers")); |
| } |
| |
| |
| /* Support for debugging kernel virtual memory images. */ |
| |
| #include <sys/types.h> |
| #include <machine/pcb.h> |
| |
| #include "bsd-kvm.h" |
| |
| static int |
| vaxbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb) |
| { |
| int regnum; |
| |
| /* The following is true for OpenBSD 3.5: |
| |
| The pcb contains the register state at the context switch inside |
| cpu_switch(). */ |
| |
| /* The stack pointer shouldn't be zero. */ |
| if (pcb->KSP == 0) |
| return 0; |
| |
| for (regnum = VAX_R0_REGNUM; regnum < VAX_AP_REGNUM; regnum++) |
| regcache_raw_supply (regcache, regnum, &pcb->R[regnum - VAX_R0_REGNUM]); |
| regcache_raw_supply (regcache, VAX_AP_REGNUM, &pcb->AP); |
| regcache_raw_supply (regcache, VAX_FP_REGNUM, &pcb->FP); |
| regcache_raw_supply (regcache, VAX_SP_REGNUM, &pcb->KSP); |
| regcache_raw_supply (regcache, VAX_PC_REGNUM, &pcb->PC); |
| regcache_raw_supply (regcache, VAX_PS_REGNUM, &pcb->PSL); |
| |
| return 1; |
| } |
| |
| |
| /* Provide a prototype to silence -Wmissing-prototypes. */ |
| void _initialize_vaxbsd_nat (void); |
| |
| void |
| _initialize_vaxbsd_nat (void) |
| { |
| struct target_ops *t; |
| |
| t = inf_ptrace_target (); |
| t->to_fetch_registers = vaxbsd_fetch_inferior_registers; |
| t->to_store_registers = vaxbsd_store_inferior_registers; |
| add_target (t); |
| |
| /* Support debugging kernel virtual memory images. */ |
| bsd_kvm_add_target (vaxbsd_supply_pcb); |
| } |