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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [hppabsd-nat.c] - Rev 207
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/* Native-dependent code for HP PA-RISC 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 "hppa-tdep.h" #include "inf-ptrace.h" static int hppabsd_gregset_supplies_p (int regnum) { return (regnum >= HPPA_R0_REGNUM && regnum <= HPPA_PCOQ_TAIL_REGNUM); } static int hppabsd_fpregset_supplies_p (int regnum) { return (regnum >= HPPA_FP0_REGNUM && regnum <= HPPA_FP31R_REGNUM); } /* Supply the general-purpose registers stored in GREGS to REGCACHE. */ static void hppabsd_supply_gregset (struct regcache *regcache, const void *gregs) { const char *regs = gregs; int regnum; for (regnum = HPPA_R1_REGNUM; regnum <= HPPA_R31_REGNUM; regnum++) regcache_raw_supply (regcache, regnum, regs + regnum * 4); regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs); regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); } /* Supply the floating-point registers stored in FPREGS to REGCACHE. */ static void hppabsd_supply_fpregset (struct regcache *regcache, const void *fpregs) { const char *regs = fpregs; int regnum; for (regnum = HPPA_FP0_REGNUM; regnum <= HPPA_FP31R_REGNUM; regnum += 2, regs += 8) { regcache_raw_supply (regcache, regnum, regs); regcache_raw_supply (regcache, regnum + 1, regs + 4); } } /* Collect the general-purpose registers from REGCACHE and store them in GREGS. */ static void hppabsd_collect_gregset (const struct regcache *regcache, void *gregs, int regnum) { char *regs = gregs; int i; for (i = HPPA_R1_REGNUM; i <= HPPA_R31_REGNUM; i++) { if (regnum == -1 || regnum == i) regcache_raw_collect (regcache, i, regs + i * 4); } if (regnum == -1 || regnum == HPPA_SAR_REGNUM) regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs); if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); } /* Collect the floating-point registers from REGCACHE and store them in FPREGS. */ static void hppabsd_collect_fpregset (struct regcache *regcache, void *fpregs, int regnum) { char *regs = fpregs; int i; for (i = HPPA_FP0_REGNUM; i <= HPPA_FP31R_REGNUM; i += 2, regs += 8) { if (regnum == -1 || regnum == i || regnum == i + 1) { regcache_raw_collect (regcache, i, regs); regcache_raw_collect (regcache, i + 1, regs + 4); } } } /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this for all registers (including the floating-point registers). */ static void hppabsd_fetch_registers (struct regcache *regcache, int regnum) { if (regnum == -1 || hppabsd_gregset_supplies_p (regnum)) { struct reg regs; if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), (PTRACE_TYPE_ARG3) ®s, 0) == -1) perror_with_name (_("Couldn't get registers")); hppabsd_supply_gregset (regcache, ®s); } if (regnum == -1 || hppabsd_fpregset_supplies_p (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")); hppabsd_supply_fpregset (regcache, &fpregs); } } /* Store register REGNUM back into the inferior. If REGNUM is -1, do this for all registers (including the floating-point registers). */ static void hppabsd_store_registers (struct regcache *regcache, int regnum) { if (regnum == -1 || hppabsd_gregset_supplies_p (regnum)) { struct reg regs; if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), (PTRACE_TYPE_ARG3) ®s, 0) == -1) perror_with_name (_("Couldn't get registers")); hppabsd_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")); } if (regnum == -1 || hppabsd_fpregset_supplies_p (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")); hppabsd_collect_fpregset (regcache, &fpregs, regnum); 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_hppabsd_nat (void); void _initialize_hppabsd_nat (void) { struct target_ops *t; /* Add in local overrides. */ t = inf_ptrace_target (); t->to_fetch_registers = hppabsd_fetch_registers; t->to_store_registers = hppabsd_store_registers; add_target (t); }
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