/* Target-dependent code for DICOS running on i386's, for GDB.
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/* Target-dependent code for DICOS running on i386's, for GDB.
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Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
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Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include "osabi.h"
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#include "osabi.h"
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include "dicos-tdep.h"
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#include "dicos-tdep.h"
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static CORE_ADDR
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static CORE_ADDR
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i386_dicos_push_dummy_code (struct gdbarch *gdbarch,
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i386_dicos_push_dummy_code (struct gdbarch *gdbarch,
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CORE_ADDR sp, CORE_ADDR funaddr,
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CORE_ADDR sp, CORE_ADDR funaddr,
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struct value **args, int nargs,
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struct value **args, int nargs,
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struct type *value_type,
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struct type *value_type,
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CORE_ADDR *real_pc, CORE_ADDR *bp_addr,
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CORE_ADDR *real_pc, CORE_ADDR *bp_addr,
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struct regcache *regcache)
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struct regcache *regcache)
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{
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{
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int bplen;
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int bplen;
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CORE_ADDR bppc = sp;
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CORE_ADDR bppc = sp;
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gdbarch_breakpoint_from_pc (gdbarch, &bppc, &bplen);
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gdbarch_breakpoint_from_pc (gdbarch, &bppc, &bplen);
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*bp_addr = sp - bplen;
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*bp_addr = sp - bplen;
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*real_pc = funaddr;
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*real_pc = funaddr;
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return *bp_addr;
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return *bp_addr;
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}
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}
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static void
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static void
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i386_dicos_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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i386_dicos_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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dicos_init_abi (gdbarch);
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dicos_init_abi (gdbarch);
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set_gdbarch_push_dummy_code (gdbarch, i386_dicos_push_dummy_code);
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set_gdbarch_push_dummy_code (gdbarch, i386_dicos_push_dummy_code);
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}
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}
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static enum gdb_osabi
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static enum gdb_osabi
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i386_dicos_osabi_sniffer (bfd *abfd)
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i386_dicos_osabi_sniffer (bfd *abfd)
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{
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{
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char *target_name = bfd_get_target (abfd);
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char *target_name = bfd_get_target (abfd);
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/* On x86-DICOS, the Load Module's "header" section is 36 bytes. */
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/* On x86-DICOS, the Load Module's "header" section is 36 bytes. */
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if (strcmp (target_name, "elf32-i386") == 0
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if (strcmp (target_name, "elf32-i386") == 0
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&& dicos_load_module_p (abfd, 36))
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&& dicos_load_module_p (abfd, 36))
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return GDB_OSABI_DICOS;
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return GDB_OSABI_DICOS;
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return GDB_OSABI_UNKNOWN;
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return GDB_OSABI_UNKNOWN;
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}
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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/* Provide a prototype to silence -Wmissing-prototypes. */
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void _initialize_i386_dicos_tdep (void);
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void _initialize_i386_dicos_tdep (void);
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void
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void
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_initialize_i386_dicos_tdep (void)
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_initialize_i386_dicos_tdep (void)
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{
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{
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gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
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gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
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i386_dicos_osabi_sniffer);
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i386_dicos_osabi_sniffer);
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gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_DICOS,
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gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_DICOS,
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i386_dicos_init_abi);
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i386_dicos_init_abi);
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}
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}
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