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Add OpenBSD/m68k support.

Browse Source 
* NEWS (New native configurations): Mention OpenBSD/m68k.
* m68kbsd-tdep.c: New file.
* m68kbsd-nat.c: New file.
* Makefile.in (ALLDEPFILES): Add m68kbsd-nat.c and m68kbsd-tdep.c.
(m68kbsd-nat.o, m68kbsd-tdep.o): New dependencies.
* configure.host: Add m68k-*-openbsd.
* configure.tgt: Add m68k-*-openbsd.
* config/m68k/tm-obsd.h: New file.
* config/m68k/obsd.mt: New file.
* config/m68k/obsd.mh: New file.
* config/djgpp/fnchange.lst: Add entries for m68kbsd-nat.c and
m68kbsd-tdep.c.
This commit is contained in:
Mark Kettenis 2004-04-30 23:28:52 +00:00
parent c40f49a4cd
commit 8f2d3ea000
11 changed files with 457 additions and 0 deletions
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16
gdb/ChangeLog
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@ -1,3 +1,19 @@
2004-05-01 Mark Kettenis <kettenis@gnu.org>
Add OpenBSD/m68k support.
* NEWS (New native configurations): Mention OpenBSD/m68k.
* m68kbsd-tdep.c: New file.
* m68kbsd-nat.c: New file.
* Makefile.in (ALLDEPFILES): Add m68kbsd-nat.c and m68kbsd-tdep.c.
(m68kbsd-nat.o, m68kbsd-tdep.o): New dependencies.
* configure.host: Add m68k-*-openbsd.
* configure.tgt: Add m68k-*-openbsd.
* config/m68k/tm-obsd.h: New file.
* config/m68k/obsd.mt: New file.
* config/m68k/obsd.mh: New file.
* config/djgpp/fnchange.lst: Add entries for m68kbsd-nat.c and
m68kbsd-tdep.c.
2004-04-30 Andrew Cagney <cagney@redhat.com>
* mipsnbsd-tdep.c (mipsnbsd_pc_in_sigtramp): Delete function.

6
gdb/Makefile.in
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@ -1340,6 +1340,7 @@ ALLDEPFILES = \
lynx-nat.c m3-nat.c \
m68hc11-tdep.c \
m68k-tdep.c \
m68kbsd-nat.c m68kbsd-tdep.c \
mcore-tdep.c \
mips-linux-nat.c mips-linux-tdep.c \
mips-nat.c \
@ -2017,6 +2018,11 @@ m68klinux-tdep.o: m68klinux-tdep.c $(defs_h) $(gdbcore_h) $(doublest_h) \
$(floatformat_h) $(frame_h) $(target_h) $(gdb_string_h) \
$(gdbtypes_h) $(osabi_h) $(regcache_h) $(objfiles_h) $(symtab_h) \
$(m68k_tdep_h)
m68kbsd-nat.o: m68kbsd-nat.c $(defs_h) $(inferior_h) $(regcache_h) \
$(gdb_assert_h) $(m68k_tdep_h)
m68kbsd-tdep.o: m68kbsd-tdep.c $(defs_h) $(arch_utils_h) $(osabi_h) \
$(regcache_h) $(regset_h) $(gdb_assert_h) $(gdb_string_h) \
$(m68k_tdep_h) $(solib_svr4_h)
m68knbsd-nat.o: m68knbsd-nat.c $(defs_h) $(inferior_h) $(gdbcore_h) \
$(regcache_h)
m68knbsd-tdep.o: m68knbsd-tdep.c $(defs_h) $(gdbtypes_h) $(regcache_h)

1
gdb/NEWS
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@ -16,6 +16,7 @@ systems (Solaris, IRIX). Ref: server/519.
* New native configurations
OpenBSD/m68k m68k-*-openbsd*
OpenBSD/powerpc powerpc-*-openbsd*
NetBSD/vax vax-*-netbsd*
OpenBSD/vax vax-*-openbsd*

2
gdb/config/djgpp/fnchange.lst
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@ -141,6 +141,8 @@
@V@/gdb/m2-exp.tab.c @V@/gdb/m2-exp_tab.c
@V@/gdb/m68klinux-nat.c @V@/gdb/m68kl-nat.c
@V@/gdb/m68klinux-tdep.c @V@/gdb/m68kl-tdep.c
@V@/gdb/m68kbsd-nat.c @V@/gdb/m68bsd-nat.c
@V@/gdb/m68kbsd-tdep.c @V@/gdb/m68bsd-tdep.c
@V@/gdb/m68knbsd-nat.c @V@/gdb/m6nbsd-nat.c
@V@/gdb/m68knbsd-tdep.c @V@/gdb/m6nbsd-tdep.c
@V@/gdb/mips-linux-nat.c @V@/gdb/mipslnxnat.c

4
gdb/config/m68k/obsd.mh Normal file
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@ -0,0 +1,4 @@
# Host: OpenBSD/m68k
NATDEPFILES= m68kbsd-nat.o fork-child.o infptrace.o inftarg.o \
solib.o solib-sunos.o
NAT_FILE= nm-nbsdaout.h

3
gdb/config/m68k/obsd.mt Normal file
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@ -0,0 +1,3 @@
# Target: OpenBSD/m68k
TDEPFILES= m68k-tdep.o m68kbsd-tdep.o corelow.o solib.o solib-svr4.o
TM_FILE= tm-obsd.h

27
gdb/config/m68k/tm-obsd.h Normal file
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@ -0,0 +1,27 @@
/* Target-dependent definitions for OpenBSD/m68k.
Copyright 2004 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. */
#ifndef TM_OBSD_H
#define TM_OBSD_H
#include "solib.h"
#endif /* tm-obsd.h */

1
gdb/configure.host
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@ -85,6 +85,7 @@ ia64-*-linux*) gdb_host=linux ;;
m68*-*-linux*) gdb_host=linux ;;
m68*-*-netbsd*) gdb_host=nbsdaout ;;
m68*-*-openbsd*) gdb_host=obsd ;;
mips-sgi-irix5*) gdb_host=irix5 ;;
mips-sgi-irix6*) gdb_host=irix6 ;;

1
gdb/configure.tgt
View File

@ -114,6 +114,7 @@ m68*-*-linux*) gdb_target=linux
build_gdbserver=yes
;;
m68*-*-netbsd*) gdb_target=nbsdaout ;;
m68*-*-openbsd*) gdb_target=obsd ;;
m68*-*-os68k*) gdb_target=os68k ;;
m68*-*-uclinux*) gdb_target=monitor ;;
m68*-*-vxworks*) gdb_target=vxworks68 ;;

170
gdb/m68kbsd-nat.c Normal file
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@ -0,0 +1,170 @@
/* Native-dependent code for Motorola 68000 BSD's.
Copyright 2004 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 "inferior.h"
#include "regcache.h"
#include "gdb_assert.h"
#include <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#include "m68k-tdep.h"
static int
m68kbsd_gregset_supplies_p (int regnum)
{
return (regnum >= M68K_D0_REGNUM && regnum <= M68K_PC_REGNUM);
}
static int
m68kbsd_fpregset_supplies_p (int regnum)
{
return (regnum >= M68K_FP0_REGNUM && regnum <= M68K_FPI_REGNUM);
}
/* Supply the general-purpose registers stored in GREGS to REGCACHE. */
static void
m68kbsd_supply_gregset (struct regcache *regcache, const void *gregs)
{
const char *regs = gregs;
int regnum;
for (regnum = M68K_D0_REGNUM; regnum <= M68K_PC_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum, regs + regnum * 4);
}
/* Supply the floating-point registers stored in FPREGS to REGCACHE. */
static void
m68kbsd_supply_fpregset (struct regcache *regcache, const void *fpregs)
{
const char *regs = fpregs;
int regnum;
for (regnum = M68K_FP0_REGNUM; regnum <= M68K_FPI_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum,
regs + m68kbsd_fpreg_offset (regnum));
}
/* Collect the general-purpose registers from REGCACHE and store them
in GREGS. */
static void
m68kbsd_collect_gregset (const struct regcache *regcache,
void *gregs, int regnum)
{
char *regs = gregs;
int i;
for (i = M68K_D0_REGNUM; i <= M68K_PC_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
regcache_raw_collect (regcache, regnum, regs + i * 4);
}
}
/* Collect the floating-point registers from REGCACHE and store them
in FPREGS. */
static void
m68kbsd_collect_fpregset (struct regcache *regcache,
void *fpregs, int regnum)
{
char *regs = fpregs;
int i;
for (i = M68K_FP0_REGNUM; i <= M68K_FPI_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
regcache_raw_collect (regcache, regnum,
regs + m68kbsd_fpreg_offset (i));
}
}
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers (including the floating-point registers). */
void
fetch_inferior_registers (int regnum)
{
if (regnum == -1 || m68kbsd_gregset_supplies_p (regnum))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &regs, 0) == -1)
perror_with_name ("Couldn't get registers");
m68kbsd_supply_gregset (current_regcache, &regs);
}
if (regnum == -1 || m68kbsd_fpregset_supplies_p (regnum))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point status");
m68kbsd_supply_fpregset (current_regcache, &fpregs);
}
}
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
this for all registers (including the floating-point registers). */
void
store_inferior_registers (int regnum)
{
if (regnum == -1 || m68kbsd_gregset_supplies_p (regnum))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &regs, 0) == -1)
perror_with_name ("Couldn't get registers");
m68kbsd_collect_gregset (current_regcache, &regs, regnum);
if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &regs, 0) == -1)
perror_with_name ("Couldn't write registers");
}
if (regnum == -1 || m68kbsd_fpregset_supplies_p (regnum))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point status");
m68kbsd_collect_fpregset (current_regcache, &fpregs, regnum);
if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't write floating point status");
}
}

226
gdb/m68kbsd-tdep.c Normal file
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@ -0,0 +1,226 @@
/* Target-dependent code for Motorola 68000 BSD's.
Copyright 2004 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 "regcache.h"
#include "regset.h"
#include "gdb_assert.h"
#include "gdb_string.h"
#include "m68k-tdep.h"
#include "solib-svr4.h"
/* Core file support. */
/* Sizeof `struct reg' in <machine/reg.h>. */
#define M68KBSD_SIZEOF_GREGS (18 * 4)
/* Sizeof `struct fpreg' in <machine/reg.h. */
#define M68KBSD_SIZEOF_FPREGS (((8 * 3) + 3) * 4)
int
m68kbsd_fpreg_offset (int regnum)
{
if (regnum >= M68K_FPC_REGNUM)
return 8 * 12 + (regnum - M68K_FPC_REGNUM) * 4;
return (regnum - M68K_FP0_REGNUM) * 12;
}
/* Supply register REGNUM from the buffer specified by FPREGS and LEN
in the floating-point register set REGSET to register cache
REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
static void
m68kbsd_supply_fpregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *fpregs, size_t len)
{
const char *regs = fpregs;
int i;
gdb_assert (len >= M68KBSD_SIZEOF_FPREGS);
for (i = M68K_FP0_REGNUM; i <= M68K_PC_REGNUM; i++)
{
if (regnum == i || regnum == -1)
regcache_raw_supply (regcache, i, regs + m68kbsd_fpreg_offset (i));
}
}
/* Supply register REGNUM from the buffer specified by GREGS and LEN
in the general-purpose register set REGSET to register cache
REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
static void
m68kbsd_supply_gregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
const char *regs = gregs;
int i;
gdb_assert (len >= M68KBSD_SIZEOF_GREGS);
for (i = M68K_D0_REGNUM; i <= M68K_PC_REGNUM; i++)
{
if (regnum == i || regnum == -1)
regcache_raw_supply (regcache, i, regs + i * 4);
}
if (len >= M68KBSD_SIZEOF_GREGS + M68KBSD_SIZEOF_FPREGS)
{
regs += M68KBSD_SIZEOF_GREGS;
len -= M68KBSD_SIZEOF_GREGS;
m68kbsd_supply_fpregset (regset, regcache, regnum, regs, len);
}
}
/* Motorola 68000 register sets. */
static struct regset m68kbsd_gregset =
{
NULL,
m68kbsd_supply_gregset
};
static struct regset m68kbsd_fpregset =
{
NULL,
m68kbsd_supply_fpregset
};
/* Return the appropriate register set for the core section identified
by SECT_NAME and SECT_SIZE. */
static const struct regset *
m68kbsd_regset_from_core_section (struct gdbarch *gdbarch,
const char *sect_name, size_t sect_size)
{
if (strcmp (sect_name, ".reg") == 0 && sect_size >= M68KBSD_SIZEOF_GREGS)
return &m68kbsd_gregset;
if (strcmp (sect_name, ".reg2") == 0 && sect_size >= M68KBSD_SIZEOF_FPREGS)
return &m68kbsd_fpregset;
return NULL;
}
/* Support for shared libraries. */
/* Return non-zero if we are in a shared library trampoline code stub. */
int
m68kbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
{
return (name && !strcmp (name, "_DYNAMIC"));
}
static void
m68kbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
tdep->jb_pc = 5;
tdep->jb_elt_size = 4;
set_gdbarch_regset_from_core_section
(gdbarch, m68kbsd_regset_from_core_section);
}
/* OpenBSD and NetBSD a.out. */
static void
m68kbsd_aout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
m68kbsd_init_abi (info, gdbarch);
tdep->struct_return = reg_struct_return;
/* Assume SunOS-style shared libraries. */
set_gdbarch_in_solib_call_trampoline
(gdbarch, m68kbsd_aout_in_solib_call_trampoline);
}
/* NetBSD ELF. */
static void
m68kbsd_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
m68kbsd_init_abi (info, gdbarch);
tdep->struct_return = pcc_struct_return;
/* NetBSD ELF uses SVR4-style shared libraries. */
set_gdbarch_in_solib_call_trampoline
(gdbarch, generic_in_solib_call_trampoline);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
}
static enum gdb_osabi
m68kbsd_aout_osabi_sniffer (bfd *abfd)
{
if (strcmp (bfd_get_target (abfd), "a.out-m68k-netbsd") == 0
|| strcmp (bfd_get_target (abfd), "a.out-m68k4k-netbsd") == 0)
return GDB_OSABI_NETBSD_AOUT;
return GDB_OSABI_UNKNOWN;
}
static enum gdb_osabi
m68kbsd_core_osabi_sniffer (bfd *abfd)
{
if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
return GDB_OSABI_NETBSD_AOUT;
return GDB_OSABI_UNKNOWN;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_m68kbsd_tdep (void);
void
_initialize_m68kbsd_tdep (void)
{
gdbarch_register_osabi_sniffer (bfd_arch_m68k, bfd_target_aout_flavour,
m68kbsd_aout_osabi_sniffer);
/* BFD doesn't set a flavour for NetBSD style a.out core files. */
gdbarch_register_osabi_sniffer (bfd_arch_m68k, bfd_target_unknown_flavour,
m68kbsd_core_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_m68k, 0, GDB_OSABI_NETBSD_AOUT,
m68kbsd_aout_init_abi);
gdbarch_register_osabi (bfd_arch_m68k, 0, GDB_OSABI_NETBSD_ELF,
m68kbsd_elf_init_abi);
}