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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [vaxbsd-nat.c] - Rev 450
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/* Native-dependent code for modern VAX BSD's. Copyright (C) 2004, 2005, 2007, 2008 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 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 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); }
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