1/* Target-dependent code for DICOS running on x86-64's, for GDB. 2 3 Copyright (C) 2009, 2010, 2011 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 3 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, see <http://www.gnu.org/licenses/>. */ 19 20#include "defs.h" 21#include "osabi.h" 22#include "gdb_string.h" 23#include "amd64-tdep.h" 24#include "dicos-tdep.h" 25 26static CORE_ADDR 27amd64_dicos_push_dummy_code (struct gdbarch *gdbarch, 28 CORE_ADDR sp, CORE_ADDR funaddr, 29 struct value **args, int nargs, 30 struct type *value_type, 31 CORE_ADDR *real_pc, CORE_ADDR *bp_addr, 32 struct regcache *regcache) 33{ 34 int bplen; 35 CORE_ADDR bppc = sp; 36 37 gdbarch_breakpoint_from_pc (gdbarch, &bppc, &bplen); 38 *bp_addr = sp - bplen; 39 *real_pc = funaddr; 40 41 return *bp_addr; 42} 43 44static void 45amd64_dicos_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) 46{ 47 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 48 49 amd64_init_abi (info, gdbarch); 50 51 dicos_init_abi (gdbarch); 52 53 set_gdbarch_push_dummy_code (gdbarch, amd64_dicos_push_dummy_code); 54} 55 56static enum gdb_osabi 57amd64_dicos_osabi_sniffer (bfd *abfd) 58{ 59 char *target_name = bfd_get_target (abfd); 60 61 /* On amd64-DICOS, the Load Module's "header" section is 72 62 bytes. */ 63 if (strcmp (target_name, "elf64-x86-64") == 0 64 && dicos_load_module_p (abfd, 72)) 65 return GDB_OSABI_DICOS; 66 67 return GDB_OSABI_UNKNOWN; 68} 69 70/* Provide a prototype to silence -Wmissing-prototypes. */ 71void _initialize_amd64_dicos_tdep (void); 72 73void 74_initialize_amd64_dicos_tdep (void) 75{ 76 gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour, 77 amd64_dicos_osabi_sniffer); 78 79 gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, 80 GDB_OSABI_DICOS, 81 amd64_dicos_init_abi); 82} 83