/* Native-dependent code for OpenBSD/mips64. Copyright (C) 2004 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #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 "mips-tdep.h" #include "inf-ptrace.h" /* Shorthand for some register numbers used below. */ #define MIPS_PC_REGNUM MIPS_EMBED_PC_REGNUM #define MIPS_FP0_REGNUM MIPS_EMBED_FP0_REGNUM #define MIPS_FSR_REGNUM MIPS_EMBED_FP0_REGNUM + 32 /* Supply the general-purpose registers stored in GREGS to REGCACHE. */ static void mips64obsd_supply_gregset (struct regcache *regcache, const void *gregs) { const char *regs = gregs; int regnum; for (regnum = MIPS_ZERO_REGNUM; regnum <= MIPS_PC_REGNUM; regnum++) regcache_raw_supply (regcache, regnum, regs + regnum * 8); for (regnum = MIPS_FP0_REGNUM; regnum <= MIPS_FSR_REGNUM; regnum++) regcache_raw_supply (regcache, regnum, regs + (regnum + 2) * 8); } /* Collect the general-purpose registers from REGCACHE and store them in GREGS. */ static void mips64obsd_collect_gregset (const struct regcache *regcache, void *gregs, int regnum) { char *regs = gregs; int i; for (i = MIPS_ZERO_REGNUM; i <= MIPS_PC_REGNUM; i++) { if (regnum == -1 || regnum == i) regcache_raw_collect (regcache, i, regs + i * 8); } for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++) { if (regnum == -1 || regnum == i) regcache_raw_collect (regcache, i, regs + (i + 2) * 8); } } /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this for all registers. */ static void mips64obsd_fetch_inferior_registers (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")); mips64obsd_supply_gregset (current_regcache, ®s); } /* Store register REGNUM back into the inferior. If REGNUM is -1, do this for all registers. */ static void mips64obsd_store_inferior_registers (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")); mips64obsd_collect_gregset (current_regcache, ®s, regnum); if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), (PTRACE_TYPE_ARG3) ®s, 0) == -1) perror_with_name (_("Couldn't write registers")); } /* Provide a prototype to silence -Wmissing-prototypes. */ void _initialize_mips64obsd_nat (void); void _initialize_mips64obsd_nat (void) { struct target_ops *t; t = inf_ptrace_target (); t->to_fetch_registers = mips64obsd_fetch_inferior_registers; t->to_store_registers = mips64obsd_store_inferior_registers; add_target (t); }