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* configure.tgt (i[3456]86-*-openbsd*): Set gdb_target to obds.

Browse source 
* config/i386/obsd.mt: New file.
* i386bsd-nat.c (_initialize_i386bsd_nat): Introduce
i386obsd_sc_pc_offset and i386obsd_sc_sp_offset;
* i386obsd-nat.c (_initialize_i386obsd_nat): Set
i386obsd_sigtramp_start and i386obsd_sigtramp_end instead of
i386nbsd_sigtramp_start and i386nbsd_sigtramp_end.
* i386obsd-tdep.c: New file.
This commit is contained in:
Mark Kettenis 2002-10-20 11:54:40 +00:00
parent 05e17ccd8e
commit 005328e342
6 changed files with 147 additions and 6 deletions
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11
gdb/ChangeLog
View file

@ -1,3 +1,14 @@
2002-10-20 Mark Kettenis <kettenis@gnu.org>
* configure.tgt (i[3456]86-*-openbsd*): Set gdb_target to obds.
* config/i386/obsd.mt: New file.
* i386bsd-nat.c (_initialize_i386bsd_nat): Introduce
i386obsd_sc_pc_offset and i386obsd_sc_sp_offset;
* i386obsd-nat.c (_initialize_i386obsd_nat): Set
i386obsd_sigtramp_start and i386obsd_sigtramp_end instead of
i386nbsd_sigtramp_start and i386nbsd_sigtramp_end.
* i386obsd-tdep.c: New file.
2002-10-19 Adam Fedor <fedor@gnu.org>
* objc-exp.y (name_not_typename): Fix invalid comment.

3
gdb/config/i386/obsd.mt Normal file
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@ -0,0 +1,3 @@
# Target: Intel 386 running OpenBSD
TDEPFILES= i386-tdep.o i387-tdep.o i386bsd-tdep.o i386obsd-tdep.o corelow.o
TM_FILE= tm-i386.h

2
gdb/configure.tgt
View file

@ -94,7 +94,7 @@ i[3456]86-ncr-*) gdb_target=ncr3000 ;;
# OBSOLETE i[3456]86-*-aix*) gdb_target=i386aix ;;
i[3456]86-*-bsd*) gdb_target=i386bsd ;;
i[3456]86-*-netbsd*) gdb_target=nbsd ;;
i[3456]86-*-openbsd*) gdb_target=nbsd ;; # FIXME: needs its own target
i[3456]86-*-openbsd*) gdb_target=obsd ;;
# OBSOLETE i[3456]86-*-os9k) gdb_target=i386os9k ;;
i[3456]86-*-go32*) gdb_target=i386aout ;;
i[3456]86-*-msdosdjgpp*) gdb_target=go32 ;;

7
gdb/i386bsd-nat.c
View file

@ -400,11 +400,16 @@ _initialize_i386bsd_nat (void)
extern int i386fbsd4_sc_sp_offset;
#define SC_PC_OFFSET i386fbsd4_sc_pc_offset
#define SC_SP_OFFSET i386fbsd4_sc_sp_offset
#elif defined (NetBSD) || defined (__NetBSD_Version__) || defined (OpenBSD)
#elif defined (NetBSD) || defined (__NetBSD_Version__)
extern int i386nbsd_sc_pc_offset;
extern int i386nbsd_sc_sp_offset;
#define SC_PC_OFFSET i386nbsd_sc_pc_offset
#define SC_SP_OFFSET i386nbsd_sc_sp_offset
#elif defined (OpenBSD)
extern int i386obsd_sc_pc_offset;
extern int i386obsd_sc_sp_offset;
#define SC_PC_OFFSET i386obsd_sc_pc_offset
#define SC_SP_OFFSET i386obsd_sc_sp_offset
#else
extern int i386bsd_sc_pc_offset;
extern int i386bsd_sc_sp_offset;

8
gdb/i386obsd-nat.c
View file

@ -44,16 +44,16 @@ _initialize_i386obsd_nat (void)
int mib[2];
size_t len;
extern CORE_ADDR i386nbsd_sigtramp_start;
extern CORE_ADDR i386nbsd_sigtramp_end;
extern CORE_ADDR i386obsd_sigtramp_start;
extern CORE_ADDR i386obsd_sigtramp_end;
mib[0] = CTL_VM;
mib[1] = VM_PSSTRINGS;
len = sizeof (_ps);
if (sysctl (mib, 2, &_ps, &len, NULL, 0) == 0)
{
i386nbsd_sigtramp_start = (CORE_ADDR)_ps.val - 128;
i386nbsd_sigtramp_end = (CORE_ADDR)_ps.val;
i386obsd_sigtramp_start = (CORE_ADDR)_ps.val - 128;
i386obsd_sigtramp_end = (CORE_ADDR)_ps.val;
}
}
#endif

122
gdb/i386obsd-tdep.c Normal file
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@ -0,0 +1,122 @@
/* Target-dependent code for OpenBSD/i386.
Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 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 "gdbcore.h"
#include "regcache.h"
#include "i386-tdep.h"
#include "i387-tdep.h"
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_i386obsd_tdep (void);
#define SIZEOF_STRUCT_REG (16 * 4)
static void
i386obsd_supply_reg (char *regs, int regno)
{
int i;
for (i = 0; i <= 15; i++)
if (regno == i || regno == -1)
supply_register (i, regs + i * 4);
}
static void
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
CORE_ADDR ignore)
{
char *regs, *fsave;
/* We get everything from one section. */
if (which != 0)
return;
if (core_reg_size < (SIZEOF_STRUCT_REG + 108))
{
warning ("Wrong size register set in core file.");
return;
}
regs = core_reg_sect;
fsave = core_reg_sect + SIZEOF_STRUCT_REG;
/* Integer registers. */
i386obsd_supply_reg (regs, -1);
/* Floating point registers. */
i387_supply_fsave (fsave);
}
static struct core_fns i386obsd_core_fns =
{
bfd_target_unknown_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_core_registers, /* core_read_registers */
NULL /* next */
};
CORE_ADDR i386obsd_sigtramp_start = 0xbfbfdf20;
CORE_ADDR i386obsd_sigtramp_end = 0xbfbfdff0;
/* From <machine/signal.h>. */
int i386obsd_sc_pc_offset = 44;
int i386obsd_sc_sp_offset = 56;
static void
i386obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Obviously OpenBSD is BSD-based. */
i386bsd_init_abi (info, gdbarch);
/* OpenBSD uses -freg-struct-return by default. */
tdep->struct_return = reg_struct_return;
/* OpenBSD uses a different memory layout. */
tdep->sigtramp_start = i386obsd_sigtramp_start;
tdep->sigtramp_end = i386obsd_sigtramp_end;
/* OpenBSD has a `struct sigcontext' that's different from the
origional 4.3 BSD. */
tdep->sc_pc_offset = i386obsd_sc_pc_offset;
tdep->sc_sp_offset = i386obsd_sc_sp_offset;
}
void
_initialize_i386obsd_tdep (void)
{
add_core_fns (&i386obsd_core_fns);
/* FIXME: kettenis/20021020: Since OpenBSD/i386 binaries are
indistingushable from NetBSD/i386 a.out binaries, building a GDB
that should support both these targets will probably not work as
expected. */
#define GDB_OSABI_OPENBSD_AOUT GDB_OSABI_NETBSD_AOUT
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_OPENBSD_AOUT,
i386obsd_init_abi);
}