1/* Native-dependent code for HP PA-RISC BSD's. 2 3 Copyright 2004 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 26#include <sys/types.h> 27#include <sys/ptrace.h> 28#include <machine/reg.h> 29 30#include "hppa-tdep.h" 31 32static int 33hppabsd_gregset_supplies_p (int regnum) 34{ 35 return (regnum >= HPPA_R0_REGNUM && regnum <= HPPA_PCOQ_TAIL_REGNUM); 36} 37 38/* Supply the general-purpose registers stored in GREGS to REGCACHE. */ 39 40static void 41hppabsd_supply_gregset (struct regcache *regcache, const void *gregs) 42{ 43 const char *regs = gregs; 44 int regnum; 45 46 for (regnum = HPPA_R1_REGNUM; regnum <= HPPA_R31_REGNUM; regnum++) 47 regcache_raw_supply (regcache, regnum, regs + regnum * 4); 48 49 regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs); 50 regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); 51 regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); 52} 53 54/* Collect the general-purpose registers from REGCACHE and store them 55 in GREGS. */ 56 57static void 58hppabsd_collect_gregset (const struct regcache *regcache, 59 void *gregs, int regnum) 60{ 61 char *regs = gregs; 62 int i; 63 64 for (i = HPPA_R1_REGNUM; i <= HPPA_R31_REGNUM; i++) 65 { 66 if (regnum == -1 || regnum == i) 67 regcache_raw_collect (regcache, i, regs + i * 4); 68 } 69 70 if (regnum == -1 || regnum == HPPA_SAR_REGNUM) 71 regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs); 72 if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) 73 regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); 74 if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) 75 regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); 76} 77 78 79/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this 80 for all registers (including the floating-point registers). */ 81 82void 83fetch_inferior_registers (int regnum) 84{ 85 struct regcache *regcache = current_regcache; 86 87 if (regnum == -1 || hppabsd_gregset_supplies_p (regnum)) 88 { 89 struct reg regs; 90 91 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), 92 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 93 perror_with_name ("Couldn't get registers"); 94 95 hppabsd_supply_gregset (regcache, ®s); 96 } 97} 98 99/* Store register REGNUM back into the inferior. If REGNUM is -1, do 100 this for all registers (including the floating-point registers). */ 101 102void 103store_inferior_registers (int regnum) 104{ 105 if (regnum == -1 || hppabsd_gregset_supplies_p (regnum)) 106 { 107 struct reg regs; 108 109 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), 110 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 111 perror_with_name ("Couldn't get registers"); 112 113 hppabsd_collect_gregset (current_regcache, ®s, regnum); 114 115 if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), 116 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 117 perror_with_name ("Couldn't write registers"); 118 } 119} 120