Fix PR build/1549.

* i386obsd-tdep.c: Update copyright years.  Include
"solib-svr4.h".
(i386obsd_init_abi): Don't set regset_from_core_section here.
(i386obsd_aout_init_abi): New function.  Set
regset_from_core_section here.
(i386obsd_elf_init_abi): New function.
(_initialize_i386obsd_tdep): Register OS/ABI for OpenBSD ELF.
* Makefile.in (i386obsd-tdep.o): Update dependecies.
* config/i386/obsd.mt (TDEPFILES): Add solib.o and solib-svr4.o.
(TM_FILE): Set to tm-nbsd.h.

* config/i386/obsd.mh (NATDEPFILES): Remove solib.o and
solib-sunos.o.

gdb/ChangeLog

@@ -1,5 +1,20 @@
 2004-02-21  Mark Kettenis  <kettenis@gnu.org>
 
+	Fix PR build/1549.
+	* i386obsd-tdep.c: Update copyright years.  Include
+	"solib-svr4.h".
+	(i386obsd_init_abi): Don't set regset_from_core_section here.
+	(i386obsd_aout_init_abi): New function.  Set
+	regset_from_core_section here.
+	(i386obsd_elf_init_abi): New function.
+	(_initialize_i386obsd_tdep): Register OS/ABI for OpenBSD ELF.
+	* Makefile.in (i386obsd-tdep.o): Update dependecies.
+	* config/i386/obsd.mt (TDEPFILES): Add solib.o and solib-svr4.o.
+	(TM_FILE): Set to tm-nbsd.h.
+
+	* config/i386/obsd.mh (NATDEPFILES): Remove solib.o and
+	solib-sunos.o.
+
 	* solib-svr4.h: Update copyright year.
 	(svr4_ilp32_fetch_link_map_offsets)
 	(svr4_lp64_fetch_link_map_offsets): New prototype.

gdb/Makefile.in

@@ -1850,7 +1850,7 @@ i386-nto-tdep.o: i386-nto-tdep.c $(gdb_string_h) $(gdb_assert_h) $(defs_h) \
 i386obsd-nat.o: i386obsd-nat.c $(defs_h) $(i386_tdep_h)
 i386obsd-tdep.o: i386obsd-tdep.c $(defs_h) $(arch_utils_h) $(gdbcore_h) \
 	$(regcache_h) $(regset_h) $(osabi_h) $(gdb_assert_h) $(gdb_string_h) \
-	$(i386_tdep_h) $(i387_tdep_h)
+	$(i386_tdep_h) $(i387_tdep_h) $(solib_svr4_h)
 i386-sol2-tdep.o: i386-sol2-tdep.c $(defs_h) $(value_h) $(osabi_h) \
 	$(i386_tdep_h)
 i386-stub.o: i386-stub.c

gdb/config/i386/obsd.mh

@@ -1,10 +1,9 @@
-# Host: Intel 386 running OpenBSD
+# Host: OpenBSD/i386 ELF
 
 XM_FILE= xm-i386.h
 
 NAT_FILE= nm-obsd.h
-NATDEPFILES= fork-child.o infptrace.o inftarg.o i386bsd-nat.o i386obsd-nat.o \
+NATDEPFILES= fork-child.o infptrace.o inftarg.o i386bsd-nat.o i386obsd-nat.o
-	solib.o solib-sunos.o
 
 # The OpenBSD yacc generates yyname and yyrule tables that conflict at
 # link time if we define YYDEBUG to a non-zero value.

gdb/config/i386/obsd.mt

@@ -1,3 +1,4 @@
-# Target: Intel 386 running OpenBSD
+# Target: OpenBSD/i386
-TDEPFILES= i386-tdep.o i387-tdep.o i386bsd-tdep.o i386obsd-tdep.o corelow.o
+TDEPFILES= i386-tdep.o i387-tdep.o i386bsd-tdep.o i386obsd-tdep.o corelow.o \
-TM_FILE= tm-i386.h
+	solib.o solib-svr4.o
+TM_FILE= tm-nbsd.h

gdb/i386obsd-tdep.c

@@ -1,6 +1,7 @@
 /* Target-dependent code for OpenBSD/i386.
 
-   Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002, 2003
+   Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002,
+   2003, 2004
    Free Software Foundation, Inc.
 
    This file is part of GDB.
@@ -32,6 +33,7 @@
 
 #include "i386-tdep.h"
 #include "i387-tdep.h"
+#include "solib-svr4.h"
 
 /* From <machine/reg.h>.  */
 static int i386obsd_r_reg_offset[] =
@@ -130,10 +132,6 @@ i386obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   tdep->gregset_num_regs = ARRAY_SIZE (i386obsd_r_reg_offset);
   tdep->sizeof_gregset = 16 * 4;
 
-  /* OpenBSD has a single register set.  */
-  set_gdbarch_regset_from_core_section
-    (gdbarch, i386obsd_aout_regset_from_core_section);
-
   /* OpenBSD uses -freg-struct-return by default.  */
   tdep->struct_return = reg_struct_return;
 
@@ -146,6 +144,38 @@ i386obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   tdep->sc_reg_offset = i386obsd_sc_reg_offset;
   tdep->sc_num_regs = ARRAY_SIZE (i386obsd_sc_reg_offset);
 }
+
+/* OpenBSD a.out.  */
+
+static void
+i386obsd_aout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+  i386obsd_init_abi (info, gdbarch);
+
+  /* OpenBSD a.out has a single register set.  */
+  set_gdbarch_regset_from_core_section
+    (gdbarch, i386obsd_aout_regset_from_core_section);
+}
+
+/* OpenBSD ELF.  */
+
+static void
+i386obsd_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  /* It's still OpenBSD.  */
+  i386obsd_init_abi (info, gdbarch);
+
+  /* But ELF-based.  */
+  i386_elf_init_abi (info, gdbarch);
+
+  /* OpenBSD 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);
+}
 
 
 /* Provide a prototype to silence -Wmissing-prototypes.  */
@@ -161,5 +191,7 @@ _initialize_i386obsd_tdep (void)
 #define GDB_OSABI_OPENBSD_AOUT GDB_OSABI_NETBSD_AOUT
 
   gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_OPENBSD_AOUT,
-			  i386obsd_init_abi);
+			  i386obsd_aout_init_abi);
+  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_OPENBSD_ELF,
+			  i386obsd_elf_init_abi);
 }