* i386fbsd-tdep.c: New file.

(i386fbsd_sigtramp_start, i386fbsd_sigtramp_end,
i386fbsd_sc_reg_offset, i386fbsdaout_init_abi, i386fbsd_init_abi,
i386fbsd4_sc_reg_offset, i386fbsd4_init_abi): Move here from
i386bsd-tdep.c.
(_initialize_i386fbsd_tdep): New function.
(i386fbsd_r_reg_offset, i386fbsd4_r_reg_offset): New varibles.
(i386fbsdaout_init_abi): Initialize TDEP->gregset_reg_offset,
TDEP->gregset_num_regs, TDEP->sizeof_gregset and
TDEP->sizeof_fpregset.  Use ARRAY_SIZE to initialize
TDEP->sc_num_regs.
(i386fbsd4_init_abi): Initialize TDEP->gregset_reg_offset,
TDEP->gregset_num_regs and TDEP->sizeof_gregset.  Use ARRAY_SIZE
to initialize TDEP->sc_num_regs.
* i386bsd-tdep.c (i386fbsd_sigtramp_start, i386fbsd_sigtramp_end,
i386fbsd_sc_reg_offset, i386fbsdaout_init_abi, i386fbsd_init_abi,
i386fbsd4_sc_reg_offset, i386fbsd4_init_abi): Remove.
(_initialize_i386bsd_tdep): Don't register FreeBSD a.out and
FreeBSD ELF OS/ABI's here.
* Makefile.in (ALLDEPFILES): Add i386fbsd-tdep.c.
(i386fbsd-tdep.o): New target.
* config/i386/fbsd.mt (TDEPFILES): Add i386fbsd-tdep.o.
* config/i386/fbsd64.mt (TDEPFILES):  Add i386fbsd-tdep.o.

1 files changed, 171 insertions, 0 deletions

diff --git a/gdb/i386fbsd-tdep.c b/gdb/i386fbsd-tdep.c
new file mode 100644
index 0000000..786de7d
--- /dev/null
+++ b/gdb/i386fbsd-tdep.c
@@ -0,0 +1,171 @@
+/* Target-dependent code for FreeBSD/i386.
+
+   Copyright 2003 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 "osabi.h"
+
+#include "i386-tdep.h"
+#include "i387-tdep.h"
+
+/* FreeBSD 3.0-RELEASE or later.  */
+
+/* From <machine/reg.h>.  */
+static int i386fbsd_r_reg_offset[] =
+{
+  9 * 4, 8 * 4, 7 * 4, 6 * 4,	/* %eax, %ecx, %edx, %ebx */
+  15 * 4, 4 * 4,		/* %esp, %ebp */
+  3 * 4, 2 * 4,			/* %esi, %edi */
+  12 * 4, 14 * 4,		/* %eip, %eflags */
+  13 * 4, 16 * 4,		/* %cs, %ss */
+  1 * 4, 0 * 4, -1, -1		/* %ds, %es, %fs, %gs */
+};
+
+CORE_ADDR i386fbsd_sigtramp_start = 0xbfbfdf20;
+CORE_ADDR i386fbsd_sigtramp_end = 0xbfbfdff0;
+
+/* From <machine/signal.h>.  */
+static int i386fbsd_sc_reg_offset[] =
+{
+  8 + 14 * 4,			/* %eax */
+  8 + 13 * 4,			/* %ecx */
+  8 + 12 * 4,			/* %edx */
+  8 + 11 * 4,			/* %ebx */
+  8 + 0 * 4,                    /* %esp */
+  8 + 1 * 4,                    /* %ebp */
+  8 + 10 * 4,                   /* %esi */
+  8 + 9 * 4,                    /* %edi */
+  8 + 3 * 4,                    /* %eip */
+  8 + 4 * 4,                    /* %eflags */
+  8 + 7 * 4,                    /* %cs */
+  8 + 8 * 4,                    /* %ss */
+  8 + 6 * 4,                    /* %ds */
+  8 + 5 * 4,                    /* %es */
+  8 + 15 * 4,			/* %fs */
+  8 + 16 * 4			/* %gs */
+};
+
+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 has a different `struct reg', and reserves some space for
+     its FPU emulator in `struct fpreg'.  */
+  tdep->gregset_reg_offset = i386fbsd_r_reg_offset;
+  tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd_r_reg_offset);
+  tdep->sizeof_gregset = 18 * 4;
+  tdep->sizeof_fpregset = 176;
+
+  /* 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;
+
+  /* FreeBSD has a more complete `struct sigcontext'.  */
+  tdep->sc_reg_offset = i386fbsd_sc_reg_offset;
+  tdep->sc_num_regs = ARRAY_SIZE (i386fbsd_sc_reg_offset);
+}
+
+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/reg.h>.  */
+static int i386fbsd4_r_reg_offset[] =
+{
+  10 * 4, 9 * 4, 8 * 4, 7 * 4,	/* %eax, %ecx, %edx, %ebx */
+  16 * 4, 5 * 4,		/* %esp, %ebp */
+  4 * 4, 3 * 4,			/* %esi, %edi */
+  13 * 4, 15 * 4,		/* %eip, %eflags */
+  14 * 4, 17 * 4,		/* %cs, %ss */
+  2 * 4, 1 * 4, 0 * 4, 18 * 4	/* %ds, %es, %fs, %gs */
+};
+
+/* From <machine/signal.h>.  */
+int i386fbsd4_sc_reg_offset[] =
+{
+  20 + 11 * 4,			/* %eax */
+  20 + 10 * 4,			/* %ecx */
+  20 + 9 * 4,			/* %edx */
+  20 + 8 * 4,			/* %ebx */
+  20 + 17 * 4,			/* %esp */
+  20 + 6 * 4,			/* %ebp */
+  20 + 5 * 4,			/* %esi */
+  20 + 4 * 4,			/* %edi */
+  20 + 14 * 4,			/* %eip */
+  20 + 16 * 4,			/* %eflags */
+  20 + 15 * 4,			/* %cs */
+  20 + 18 * 4,			/* %ss */
+  20 + 3 * 4,			/* %ds */
+  20 + 2 * 4,			/* %es */
+  20 + 1 * 4,			/* %fs */
+  20 + 0 * 4			/* %gs */
+};
+
+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 reg'.  */
+  tdep->gregset_reg_offset = i386fbsd4_r_reg_offset;
+  tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd4_r_reg_offset);
+  tdep->sizeof_gregset = 19 * 4;
+
+  /* FreeBSD 4.0 introduced a new `struct sigcontext'.  */
+  tdep->sc_reg_offset = i386fbsd4_sc_reg_offset;
+  tdep->sc_num_regs = ARRAY_SIZE (i386fbsd4_sc_reg_offset);
+}
+
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+void _initialize_i386fbsd_tdep (void);
+
+void
+_initialize_i386fbsd_tdep (void)
+{
+  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD_AOUT,
+			  i386fbsdaout_init_abi);
+  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD_ELF,
+			  i386fbsd4_init_abi);
+}