/* Native-dependent code for NetBSD/hppa. Copyright (C) 2008-2019 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 <sys/types.h> #include <sys/ptrace.h> #include <machine/reg.h> #include "hppa-tdep.h" #include "inf-ptrace.h" #include "nbsd-nat.h" class hppa_nbsd_nat_target final : public nbsd_nat_target { void fetch_registers (struct regcache *, int) override; void store_registers (struct regcache *, int) override; }; static hppa_nbsd_nat_target the_hppa_nbsd_nat_target; static int hppanbsd_gregset_supplies_p (int regnum) { return ((regnum >= HPPA_R0_REGNUM && regnum <= HPPA_R31_REGNUM) || (regnum >= HPPA_SAR_REGNUM && regnum <= HPPA_PCSQ_TAIL_REGNUM) || regnum == HPPA_IPSW_REGNUM || (regnum >= HPPA_SR4_REGNUM && regnum <= HPPA_SR4_REGNUM + 5)); } static int hppanbsd_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 hppanbsd_supply_gregset (struct regcache *regcache, const void *gregs) { const char *regs = gregs; const int *r = gregs; int regnum; for (regnum = HPPA_R1_REGNUM; regnum <= HPPA_R31_REGNUM; regnum++) regcache->raw_supply (regnum, regs + regnum * 4); regcache->raw_supply (HPPA_SAR_REGNUM, regs + 32 * 4); regcache->raw_supply (HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4); regcache->raw_supply (HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4); regcache->raw_supply (HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4); regcache->raw_supply (HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4); regcache->raw_supply (HPPA_IPSW_REGNUM, regs); regcache->raw_supply (HPPA_SR4_REGNUM, regs + 41 * 4); regcache->raw_supply (HPPA_SR4_REGNUM + 1, regs + 37 * 4); regcache->raw_supply (HPPA_SR4_REGNUM + 2, regs + 38 * 4); regcache->raw_supply (HPPA_SR4_REGNUM + 3, regs + 39 * 4); regcache->raw_supply (HPPA_SR4_REGNUM + 4, regs + 40 * 4); } /* Supply the floating-point registers stored in FPREGS to REGCACHE. */ static void hppanbsd_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 (regnum, regs); regcache->raw_supply (regnum + 1, regs + 4); } } /* Collect the general-purpose registers from REGCACHE and store them in GREGS. */ static void hppanbsd_collect_gregset (const struct regcache *regcache, void *gregs, int regnum) { char *regs = gregs; int *r = gregs; int i; for (i = HPPA_R1_REGNUM; i <= HPPA_R31_REGNUM; i++) { if (regnum == -1 || regnum == i) regcache->raw_collect (i, regs + i * 4); } if (regnum == -1 || regnum == HPPA_IPSW_REGNUM) regcache->raw_collect (HPPA_IPSW_REGNUM, regs); if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) regcache->raw_collect (HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4); if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) regcache->raw_collect (HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4); if (regnum == -1 || regnum == HPPA_SAR_REGNUM) regcache->raw_collect (HPPA_SAR_REGNUM, regs + 32 * 4); if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM) regcache->raw_collect (HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4); if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM) regcache->raw_collect (HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4); if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) regcache->raw_collect (HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4); if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) regcache->raw_collect (HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4); if (regnum == -1 || regnum == HPPA_IPSW_REGNUM) regcache->raw_collect (HPPA_IPSW_REGNUM, regs); if (regnum == -1 || regnum == HPPA_SR4_REGNUM) regcache->raw_collect (HPPA_SR4_REGNUM, regs + 41 * 4); if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 1) regcache->raw_collect (HPPA_SR4_REGNUM + 1, regs + 37 * 4); if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 2) regcache->raw_collect (HPPA_SR4_REGNUM + 2, regs + 38 * 4); if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 3) regcache->raw_collect (HPPA_SR4_REGNUM + 3, regs + 39 * 4); if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 4) regcache->raw_collect (HPPA_SR4_REGNUM + 4, regs + 40 * 4); } /* Collect the floating-point registers from REGCACHE and store them in FPREGS. */ static void hppanbsd_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 (i, regs); regcache->raw_collect (i + 1, regs + 4); } } } /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this for all registers (including the floating-point registers). */ void hppa_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regnum) { pid_t pid = regcache->ptid ().pid (); if (regnum == -1 || hppanbsd_gregset_supplies_p (regnum)) { struct reg regs; if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) perror_with_name (_("Couldn't get registers")); hppanbsd_supply_gregset (regcache, ®s); } if (regnum == -1 || hppanbsd_fpregset_supplies_p (regnum)) { struct fpreg fpregs; if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) perror_with_name (_("Couldn't get floating point status")); hppanbsd_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). */ void hppa_nbsd_nat_target::store_registers (struct regcache *regcache, int regnum) { pid_t pid = regcache->ptid ().pid (); if (regnum == -1 || hppanbsd_gregset_supplies_p (regnum)) { struct reg regs; if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) perror_with_name (_("Couldn't get registers")); hppanbsd_collect_gregset (regcache, ®s, regnum); if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) perror_with_name (_("Couldn't write registers")); } if (regnum == -1 || hppanbsd_fpregset_supplies_p (regnum)) { struct fpreg fpregs; if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) perror_with_name (_("Couldn't get floating point status")); hppanbsd_collect_fpregset (regcache, &fpregs, regnum); if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) perror_with_name (_("Couldn't write floating point status")); } } void _initialize_hppanbsd_nat (void) { add_inf_child_target (&the_hppa_nbsd_nat_target); }