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[PATCH] Add OpenBSD/hppa support


Subject says it all.  Live debugging on OpenBSD/hppa 3.5 is pretty
much broken, but that will hopefully be fixed in the next release.

Getting NetBSD/hp700 to work shouldn't be to difficult now.

Committed,

Mark


Index: ChangeLog
from  Mark Kettenis  <kettenis@gnu.org>

	Add OpenBSD/hppa support.
	* NEWS (New native configurations): Mention OpenBSD/hppa.
	* hppabsd-nat.c, hppabsd-tdep.c, config/pa/obsd.mh,
	config/pa/obsd.mt, config/pa/nm-obsd.h, config/pa/tm-bsd.h: New
	files.
	* Makefile.in (ALLDEPFILES): Add hppabsd-nat.c and hppabsd-tdep.c.
	(hppabsd-nat.o, hppabsd-tdep.c): New dependencies.
	* configure.host: Add hppa*-*-openbsd*.
	* configure.tgt: Add hppa*-*-openbsd*.

Index: NEWS
===================================================================
RCS file: /cvs/src/src/gdb/NEWS,v
retrieving revision 1.152
diff -u -p -u -p -r1.152 NEWS
--- NEWS 17 Jun 2004 17:30:30 -0000 1.152
+++ NEWS 26 Jun 2004 10:02:44 -0000
@@ -22,6 +22,7 @@ kernel.
 
 * New native configurations
 
+OpenBSD/hppa					hppa*-*-openbsd*
 OpenBSD/m68k					m68*-*-openbsd*
 OpenBSD/m88k					m88*-*-openbsd*
 OpenBSD/powerpc					powerpc-*-openbsd*
Index: Makefile.in
===================================================================
RCS file: /cvs/src/src/gdb/Makefile.in,v
retrieving revision 1.588
diff -u -p -u -p -r1.588 Makefile.in
--- Makefile.in 20 Jun 2004 18:10:13 -0000 1.588
+++ Makefile.in 26 Jun 2004 10:02:47 -0000
@@ -1360,6 +1360,7 @@ ALLDEPFILES = \
 	hppa-tdep.c hppa-hpux-tdep.c \
 	hppah-nat.c hpread.c \
 	hppa-linux-tdep.c hppa-linux-nat.c \
+	hppabsd-nat.c hppabsd-tdep.c \
 	i386-tdep.c i386v-nat.c i386-linux-nat.c \
 	i386v4-nat.c i386ly-tdep.c i386-cygwin-tdep.c \
 	i386bsd-nat.c i386bsd-tdep.c i386fbsd-nat.c i386fbsd-tdep.c \
@@ -1876,6 +1877,11 @@ hppa-linux-tdep.o: hppa-linux-tdep.c $(d
 	$(elf_common_h) $(value_h)
 hppa-linux-nat.o: hppa-linux-nat.c $(defs_h) $(gdbcore_h) $(regcache_h) \
 	$(gdb_string_h) $(inferior_h)
+hppabsd-nat.o: hppabsd-nat.c $(defs_h) $(inferior_h) $(regcache_h) \
+	$(hppa_tdep_h)
+hppabsd-tdep.o: hppabsd-tdep.c $(defs_h) $(arch_utils_h) $(osabi_h) \
+	$(regcache_h) $(regset_h) $(gdb_assert_h) $(gdb_string_h) \
+	$(hppa_tdep_h) $(solib_svr4_h)
 hpread.o: hpread.c $(defs_h) $(bfd_h) $(gdb_string_h) $(hp_symtab_h) \
 	$(syms_h) $(symtab_h) $(symfile_h) $(objfiles_h) $(buildsym_h) \
 	$(complaints_h) $(gdb_stabs_h) $(gdbtypes_h) $(demangle_h) \
Index: configure.tgt
===================================================================
RCS file: /cvs/src/src/gdb/configure.tgt,v
retrieving revision 1.143
diff -u -p -u -p -r1.143 configure.tgt
--- configure.tgt 24 May 2004 21:00:08 -0000 1.143
+++ configure.tgt 26 Jun 2004 10:02:47 -0000
@@ -76,6 +76,7 @@ hppa*64*-*-hpux11*)	gdb_target=hppa64 ;;
 hppa*-*-hpux*)		gdb_target=hppahpux ;;
 hppa*-*-hiux*)		gdb_target=hppahpux ;;
 hppa*-*-linux*)		gdb_target=linux ;;
+hppa*-*-openbsd*)	gdb_target=obsd ;;
 hppa*-*-*)		gdb_target=hppa ;;
 
 i[34567]86-ncr-*)	gdb_target=ncr3000 ;;
Index: configure.host
===================================================================
RCS file: /cvs/src/src/gdb/configure.host,v
retrieving revision 1.79
diff -u -p -u -p -r1.79 configure.host
--- configure.host 24 May 2004 21:00:08 -0000 1.79
+++ configure.host 26 Jun 2004 10:02:48 -0000
@@ -50,6 +50,7 @@ hppa*64*-*-hpux11*)	gdb_host=hpux11w ;;
 hppa*-*-hpux11*)	gdb_host=hpux11 ;;
 hppa*-*-hpux*)		gdb_host=hppahpux ;;
 hppa*-*-linux*)		gdb_host=linux ;;
+hppa*-*-openbsd*)	gdb_host=obsd ;;
 
 i[34567]86-ncr-*)	gdb_host=ncr3000 ;;
 i[34567]86-*-dgux*)	gdb_host=i386v4 ;;
Index: hppabsd-nat.c
===================================================================
RCS file: hppabsd-nat.c
diff -N hppabsd-nat.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ hppabsd-nat.c 26 Jun 2004 10:02:48 -0000
@@ -0,0 +1,119 @@
+/* Native-dependent code for HP PA-RISC 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 <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+
+#include "hppa-tdep.h"
+
+static int
+hppabsd_gregset_supplies_p (int regnum)
+{
+  return (regnum >= HPPA_R0_REGNUM && regnum <= HPPA_PCOQ_TAIL_REGNUM);
+}
+
+/* Supply the general-purpose registers stored in GREGS to REGCACHE.  */
+
+static void
+hppabsd_supply_gregset (struct regcache *regcache, const void *gregs)
+{
+  const char *regs = gregs;
+  int regnum;
+
+  for (regnum = HPPA_R1_REGNUM; regnum <= HPPA_R31_REGNUM; regnum++)
+    regcache_raw_supply (regcache, regnum, regs + regnum * 4);
+
+  regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs);
+  regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
+  regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
+}
+
+/* Collect the general-purpose registers from REGCACHE and store them
+   in GREGS.  */
+
+static void
+hppabsd_collect_gregset (const struct regcache *regcache,
+			  void *gregs, int regnum)
+{
+  char *regs = gregs;
+  int i;
+
+  for (i = HPPA_R1_REGNUM; i <= HPPA_R31_REGNUM; i++)
+    {
+      if (regnum == -1 || regnum == i)
+	regcache_raw_collect (regcache, i, regs + i * 4);
+    }
+
+  if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
+    regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs);
+  if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
+    regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
+  if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
+    regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
+}
+
+
+/* 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)
+{
+  struct regcache *regcache = current_regcache;
+
+  if (regnum == -1 || hppabsd_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");
+
+      hppabsd_supply_gregset (regcache, &regs);
+    }
+}
+
+/* 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 || hppabsd_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");
+
+      hppabsd_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");
+    }
+}
Index: hppabsd-tdep.c
===================================================================
RCS file: hppabsd-tdep.c
diff -N hppabsd-tdep.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ hppabsd-tdep.c 26 Jun 2004 10:02:48 -0000
@@ -0,0 +1,137 @@
+/* Target-dependent code for HP PA-RISC 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 "hppa-tdep.h"
+#include "solib-svr4.h"
+
+/* Core file support.  */
+
+/* Sizeof `struct reg' in <machine/reg.h>.  */
+#define HPPABSD_SIZEOF_GREGS	(34 * 4)
+
+/* 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
+hppabsd_supply_gregset (const struct regset *regset, struct regcache *regcache,
+		     int regnum, const void *gregs, size_t len)
+{
+  const char *regs = gregs;
+  size_t offset;
+  int i;
+
+  gdb_assert (len >= HPPABSD_SIZEOF_GREGS);
+
+  for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4)
+    {
+      if (regnum == -1 || regnum == i)
+	regcache_raw_supply (regcache, i, regs + offset);
+    }
+
+  if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
+    regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs);
+  if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
+    regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
+  if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
+    regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
+}
+
+/* OpenBSD/hppa register set.  */
+
+static struct regset hppabsd_gregset =
+{
+  NULL,
+  hppabsd_supply_gregset
+};
+
+/* Return the appropriate register set for the core section identified
+   by SECT_NAME and SECT_SIZE.  */
+
+static const struct regset *
+hppabsd_regset_from_core_section (struct gdbarch *gdbarch,
+				  const char *sect_name, size_t sect_size)
+{
+  if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPABSD_SIZEOF_GREGS)
+    return &hppabsd_gregset;
+
+  return NULL;
+}
+
+
+static void
+hppabsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  /* Core file support.  */
+  set_gdbarch_regset_from_core_section
+    (gdbarch, hppabsd_regset_from_core_section);
+
+  /* OpenBSD and NetBSD use ELF.  */
+  tdep->is_elf = 1;
+
+  /* OpenBSD and NetBSD 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);
+}
+
+
+/* OpenBSD uses uses the traditional NetBSD core file format, even for
+   ports that use ELF.  */
+#define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
+
+static enum gdb_osabi
+hppabsd_core_osabi_sniffer (bfd *abfd)
+{
+  if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
+    return GDB_OSABI_NETBSD_CORE;
+
+  return GDB_OSABI_UNKNOWN;
+}
+
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+void _initialize_hppabsd_tdep (void);
+
+void
+_initialize_hppabsd_tdep (void)
+{
+  /* BFD doesn't set a flavour for NetBSD style a.out core files.  */
+  gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour,
+				  hppabsd_core_osabi_sniffer);
+
+  gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF,
+			  hppabsd_init_abi);
+  gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF,
+			  hppabsd_init_abi);
+}
Index: config/pa/nm-obsd.h
===================================================================
RCS file: config/pa/nm-obsd.h
diff -N config/pa/nm-obsd.h
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ config/pa/nm-obsd.h 26 Jun 2004 10:02:48 -0000
@@ -0,0 +1,28 @@
+/* Native-dependent definitions for OpenBSD/hppa.
+
+   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 NM_OBSD_H
+#define NM_OBSD_H
+
+/* Get generic BSD native definitions.  */
+#include "config/nm-bsd.h"
+
+#endif /* nm-obsd.h */
Index: config/pa/obsd.mh
===================================================================
RCS file: config/pa/obsd.mh
diff -N config/pa/obsd.mh
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ config/pa/obsd.mh 26 Jun 2004 10:02:48 -0000
@@ -0,0 +1,3 @@
+# Host: OpenBSD/hppa
+NATDEPFILES= fork-child.o infptrace.o inftarg.o hppabsd-nat.o
+NAT_FILE= nm-obsd.h
Index: config/pa/obsd.mt
===================================================================
RCS file: config/pa/obsd.mt
diff -N config/pa/obsd.mt
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ config/pa/obsd.mt 26 Jun 2004 10:02:48 -0000
@@ -0,0 +1,3 @@
+# Target: OpenBSD/hppa
+TDEPFILES= hppa-tdep.o hppabsd-tdep.o corelow.o solib.o solib-svr4.o
+TM_FILE= tm-bsd.h
Index: config/pa/tm-bsd.h
===================================================================
RCS file: config/pa/tm-bsd.h
diff -N config/pa/tm-bsd.h
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ config/pa/tm-bsd.h 26 Jun 2004 10:02:48 -0000
@@ -0,0 +1,28 @@
+/* Target-dependent definitions for HP PA-RISC 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.  */
+
+#ifndef TM_BSD_H
+#define TM_BSD_H
+
+/* Shared library support.  */
+#include "solib.h"
+
+#endif /* tm-bsd.h */


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