| 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 | \f |
| 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 | } |