| 1 | /* Native-dependent code for OpenBSD/powerpc. |
| 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 <stddef.h> |
| 27 | #include <sys/types.h> |
| 28 | #include <sys/ptrace.h> |
| 29 | #include <machine/reg.h> |
| 30 | |
| 31 | #include "ppc-tdep.h" |
| 32 | #include "ppcobsd-tdep.h" |
| 33 | |
| 34 | /* OpenBSD/powerpc doesn't have PT_GETFPREGS/PT_SETFPREGS like |
| 35 | NetBSD/powerpc and FreeBSD/powerpc. */ |
| 36 | |
| 37 | /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this |
| 38 | for all registers. */ |
| 39 | |
| 40 | void |
| 41 | fetch_inferior_registers (int regnum) |
| 42 | { |
| 43 | struct reg regs; |
| 44 | |
| 45 | if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), |
| 46 | (PTRACE_ARG3_TYPE) ®s, 0) == -1) |
| 47 | perror_with_name ("Couldn't get registers"); |
| 48 | |
| 49 | ppcobsd_supply_gregset (&ppcobsd_gregset, current_regcache, -1, |
| 50 | ®s, sizeof regs); |
| 51 | } |
| 52 | |
| 53 | /* Store register REGNUM back into the inferior. If REGNUM is -1, do |
| 54 | this for all registers. */ |
| 55 | |
| 56 | void |
| 57 | store_inferior_registers (int regnum) |
| 58 | { |
| 59 | struct reg regs; |
| 60 | |
| 61 | if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), |
| 62 | (PTRACE_ARG3_TYPE) ®s, 0) == -1) |
| 63 | perror_with_name ("Couldn't get registers"); |
| 64 | |
| 65 | ppcobsd_collect_gregset (&ppcobsd_gregset, current_regcache, |
| 66 | regnum, ®s, sizeof regs); |
| 67 | |
| 68 | if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), |
| 69 | (PTRACE_ARG3_TYPE) ®s, 0) == -1) |
| 70 | perror_with_name ("Couldn't write registers"); |
| 71 | } |
| 72 | \f |
| 73 | |
| 74 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
| 75 | void _initialize_ppcobsd_nat (void); |
| 76 | |
| 77 | void |
| 78 | _initialize_ppcobsd_nat (void) |
| 79 | { |
| 80 | /* General-purpose registers. */ |
| 81 | ppcobsd_reg_offsets.r0_offset = offsetof (struct reg, gpr); |
| 82 | ppcobsd_reg_offsets.pc_offset = offsetof (struct reg, pc); |
| 83 | ppcobsd_reg_offsets.ps_offset = offsetof (struct reg, ps); |
| 84 | ppcobsd_reg_offsets.cr_offset = offsetof (struct reg, cnd); |
| 85 | ppcobsd_reg_offsets.lr_offset = offsetof (struct reg, lr); |
| 86 | ppcobsd_reg_offsets.ctr_offset = offsetof (struct reg, cnt); |
| 87 | ppcobsd_reg_offsets.xer_offset = offsetof (struct reg, xer); |
| 88 | ppcobsd_reg_offsets.mq_offset = offsetof (struct reg, mq); |
| 89 | |
| 90 | /* Floating-point registers. */ |
| 91 | ppcobsd_reg_offsets.f0_offset = offsetof (struct reg, fpr); |
| 92 | ppcobsd_reg_offsets.fpscr_offset = -1; |
| 93 | |
| 94 | /* AltiVec registers. */ |
| 95 | ppcobsd_reg_offsets.vr0_offset = offsetof (struct vreg, vreg); |
| 96 | ppcobsd_reg_offsets.vscr_offset = offsetof (struct vreg, vscr); |
| 97 | ppcobsd_reg_offsets.vrsave_offset = offsetof (struct vreg, vrsave); |
| 98 | } |