1 /* Native-dependent code for HP PA-RISC BSD's. 2 3 Copyright 2004, 2005 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, 20 Boston, MA 02111-1307, USA. */ 21 22 #include "defs.h" 23 #include "inferior.h" 24 #include "regcache.h" 25 #include "target.h" 26 27 #include <sys/types.h> 28 #include <sys/ptrace.h> 29 #include <machine/reg.h> 30 31 #include "hppa-tdep.h" 32 #include "inf-ptrace.h" 33 34 static int 35 hppabsd_gregset_supplies_p (int regnum) 36 { 37 return (regnum >= HPPA_R0_REGNUM && regnum <= HPPA_PCOQ_TAIL_REGNUM); 38 } 39 40 /* Supply the general-purpose registers stored in GREGS to REGCACHE. */ 41 42 static void 43 hppabsd_supply_gregset (struct regcache *regcache, const void *gregs) 44 { 45 const char *regs = gregs; 46 int regnum; 47 48 for (regnum = HPPA_R1_REGNUM; regnum <= HPPA_R31_REGNUM; regnum++) 49 regcache_raw_supply (regcache, regnum, regs + regnum * 4); 50 51 regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs); 52 regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); 53 regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); 54 } 55 56 /* Collect the general-purpose registers from REGCACHE and store them 57 in GREGS. */ 58 59 static void 60 hppabsd_collect_gregset (const struct regcache *regcache, 61 void *gregs, int regnum) 62 { 63 char *regs = gregs; 64 int i; 65 66 for (i = HPPA_R1_REGNUM; i <= HPPA_R31_REGNUM; i++) 67 { 68 if (regnum == -1 || regnum == i) 69 regcache_raw_collect (regcache, i, regs + i * 4); 70 } 71 72 if (regnum == -1 || regnum == HPPA_SAR_REGNUM) 73 regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs); 74 if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) 75 regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); 76 if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) 77 regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); 78 } 79 80 81 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this 82 for all registers (including the floating-point registers). */ 83 84 static void 85 hppabsd_fetch_registers (int regnum) 86 { 87 struct regcache *regcache = current_regcache; 88 89 if (regnum == -1 || hppabsd_gregset_supplies_p (regnum)) 90 { 91 struct reg regs; 92 93 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), 94 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 95 perror_with_name (_("Couldn't get registers")); 96 97 hppabsd_supply_gregset (regcache, ®s); 98 } 99 } 100 101 /* Store register REGNUM back into the inferior. If REGNUM is -1, do 102 this for all registers (including the floating-point registers). */ 103 104 static void 105 hppabsd_store_registers (int regnum) 106 { 107 if (regnum == -1 || hppabsd_gregset_supplies_p (regnum)) 108 { 109 struct reg regs; 110 111 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), 112 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 113 perror_with_name (_("Couldn't get registers")); 114 115 hppabsd_collect_gregset (current_regcache, ®s, regnum); 116 117 if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), 118 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 119 perror_with_name (_("Couldn't write registers")); 120 } 121 } 122 123 /* Provide a prototype to silence -Wmissing-prototypes. */ 124 void _initialize_hppabsd_nat (void); 125 126 void 127 _initialize_hppabsd_nat (void) 128 { 129 struct target_ops *t; 130 131 /* Add in local overrides. */ 132 t = inf_ptrace_target (); 133 t->to_fetch_registers = hppabsd_fetch_registers; 134 t->to_store_registers = hppabsd_store_registers; 135 add_target (t); 136 } 137