diff options
Diffstat (limited to 'gdb/i386bsd-tdep.c')
| -rw-r--r-- | gdb/i386bsd-tdep.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/gdb/i386bsd-tdep.c b/gdb/i386bsd-tdep.c deleted file mode 100644 index 368fa56..0000000 --- a/gdb/i386bsd-tdep.c +++ /dev/null @@ -1,198 +0,0 @@ -/* Target-dependent code for i386 BSD's. - Copyright 2001, 2002 Free Software Foundation, Inc. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include "arch-utils.h" -#include "frame.h" -#include "gdbcore.h" -#include "regcache.h" - -#include "gdb_string.h" - -#include "i386-tdep.h" - -/* Support for signal handlers. */ - -/* Return whether PC is in a BSD sigtramp routine. */ - -static int -i386bsd_pc_in_sigtramp (CORE_ADDR pc, char *name) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - return (pc >= tdep->sigtramp_start && pc < tdep->sigtramp_end); -} - -/* Assuming FRAME is for a BSD sigtramp routine, return the address of - the associated sigcontext structure. - - Note: This function is used for Solaris 2 too, so don't make it - static. */ - -CORE_ADDR -i386bsd_sigcontext_addr (struct frame_info *frame) -{ - if (frame->next) - /* If this isn't the top frame, the next frame must be for the - signal handler itself. A pointer to the sigcontext structure - is passed as the third argument to the signal handler. */ - return read_memory_unsigned_integer (frame->next->frame + 16, 4); - - /* This is the top frame. We'll have to find the address of the - sigcontext structure by looking at the stack pointer. */ - return read_memory_unsigned_integer (read_register (SP_REGNUM) + 8, 4); -} - -/* Return the start address of the sigtramp routine. */ - -CORE_ADDR -i386bsd_sigtramp_start (CORE_ADDR pc) -{ - return gdbarch_tdep (current_gdbarch)->sigtramp_start; -} - -/* Return the end address of the sigtramp routine. */ - -CORE_ADDR -i386bsd_sigtramp_end (CORE_ADDR pc) -{ - return gdbarch_tdep (current_gdbarch)->sigtramp_end; -} - - -/* Support for shared libraries. */ - -/* Return non-zero if we are in a shared library trampoline code stub. */ - -int -i386bsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name) -{ - return (name && !strcmp (name, "_DYNAMIC")); -} - -/* Traditional BSD (4.3 BSD, still used for BSDI and 386BSD). */ - -/* From <machine/signal.h>. */ -int i386bsd_sc_pc_offset = 20; -int i386bsd_sc_sp_offset = 8; - -void -i386bsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - - set_gdbarch_pc_in_sigtramp (gdbarch, i386bsd_pc_in_sigtramp); - - /* Assume SunOS-style shared libraries. */ - set_gdbarch_in_solib_call_trampoline (gdbarch, - i386bsd_aout_in_solib_call_trampoline); - - tdep->jb_pc_offset = 0; - - tdep->sigtramp_start = 0xfdbfdfc0; - tdep->sigtramp_end = 0xfdbfe000; - tdep->sigcontext_addr = i386bsd_sigcontext_addr; - tdep->sc_pc_offset = i386bsd_sc_pc_offset; - tdep->sc_sp_offset = i386bsd_sc_sp_offset; -} - -/* FreeBSD 3.0-RELEASE or later. */ - -CORE_ADDR i386fbsd_sigtramp_start = 0xbfbfdf20; -CORE_ADDR i386fbsd_sigtramp_end = 0xbfbfdff0; - -static void -i386fbsdaout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - - /* Obviously FreeBSD is BSD-based. */ - i386bsd_init_abi (info, gdbarch); - - /* FreeBSD uses -freg-struct-return by default. */ - tdep->struct_return = reg_struct_return; - - /* FreeBSD uses a different memory layout. */ - tdep->sigtramp_start = i386fbsd_sigtramp_start; - tdep->sigtramp_end = i386fbsd_sigtramp_end; -} - -static void -i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) -{ - /* It's almost identical to FreeBSD a.out. */ - i386fbsdaout_init_abi (info, gdbarch); - - /* Except that it uses ELF. */ - i386_elf_init_abi (info, gdbarch); - - /* FreeBSD ELF uses SVR4-style shared libraries. */ - set_gdbarch_in_solib_call_trampoline (gdbarch, - generic_in_solib_call_trampoline); -} - -/* FreeBSD 4.0-RELEASE or later. */ - -/* From <machine/signal.h>. */ -int i386fbsd4_sc_pc_offset = 76; -int i386fbsd4_sc_sp_offset = 88; - -static void -i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - - /* Inherit stuff from older releases. We assume that FreeBSD - 4.0-RELEASE always uses ELF. */ - i386fbsd_init_abi (info, gdbarch); - - /* FreeBSD 4.0 introduced a new `struct sigcontext'. */ - tdep->sc_pc_offset = i386fbsd4_sc_pc_offset; - tdep->sc_sp_offset = i386fbsd4_sc_sp_offset; -} - - -static enum gdb_osabi -i386bsd_aout_osabi_sniffer (bfd *abfd) -{ - if (strcmp (bfd_get_target (abfd), "a.out-i386-netbsd") == 0) - return GDB_OSABI_NETBSD_AOUT; - - if (strcmp (bfd_get_target (abfd), "a.out-i386-freebsd") == 0) - return GDB_OSABI_FREEBSD_AOUT; - - return GDB_OSABI_UNKNOWN; -} - - -/* Provide a prototype to silence -Wmissing-prototypes. */ -void _initialize_i386bsd_tdep (void); - -void -_initialize_i386bsd_tdep (void) -{ - gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_aout_flavour, - i386bsd_aout_osabi_sniffer); - - gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_FREEBSD_AOUT, - i386fbsdaout_init_abi); - gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_FREEBSD_ELF, - i386fbsd4_init_abi); -} |