gdb: Remove support for obsolete OSABIs and a.out

gdb/ChangeLog:
2016-12-09  Pedro Alves  <palves@redhat.com>

	* Makefile.in (ALL_TARGET_OBS): Remove vax-obsd-tdep.o.
	* alpha-fbsd-tdep.c (_initialize_alphafbsd_tdep): Adjust.
	* alpha-nbsd-tdep.c: Move comment to _initialize_alphanbsd_tdep.
	(alphanbsd_core_osabi_sniffer): Delete.
	(_initialize_alphanbsd_tdep): No longer handle a.out.
	* alpha-obsd-tdep.c (_initialize_alphaobsd_tdep): Adjust.
	* amd64-fbsd-tdep.c (_initialize_amd64fbsd_tdep): Adjust.
	* amd64-nbsd-tdep.c (_initialize_amd64nbsd_tdep): Adjust.
	* amd64-obsd-tdep.c (amd64obsd_supply_regset)
	(amd64obsd_combined_regset)
	(amd64obsd_iterate_over_regset_sections, amd64obsd_core_init_abi):
	Delete.
	(_initialize_amd64obsd_tdep): Don't handle a.out.
	* arm-nbsd-nat.c (struct md_core, fetch_core_registers)
	(arm_netbsd_core_fns): Delete.
	(_initialize_arm_netbsd_nat): Don't register arm_netbsd_core_fns.
	* arm-nbsd-tdep.c (arm_netbsd_aout_init_abi)
	(arm_netbsd_aout_osabi_sniffer): Delete.
	(_initialize_arm_netbsd_tdep): Don't handle a.out.
	* arm-obsd-tdep.c (armobsd_core_osabi_sniffer): Delete.
	(_initialize_armobsd_tdep): Don't handle a.out.
	* arm-tdep.c (arm_gdbarch_init): Remove bfd_target_aout_flavour
	case.
	* breakpoint.c (disable_breakpoints_in_unloaded_shlib): Remove
	SunOS a.out handling.
	* configure.tgt (vax-*-netbsd* | vax-*-knetbsd*-gnu): Remove
	vax-obsd-tdep.o from gdb_target_objs.
	(vax-*-openbsd*): Likewise.
	(*-*-freebsd*): Adjust default gdb_osabi.
	(*-*-openbsd*): Likewise.
	* dbxread.c (block_address_function_relative): Delete.
	(dbx_symfile_read): Remove reference to
	block_address_function_relative.
	(dbx_symfile_read): Don't call read_dbx_dynamic_symtab.
	(read_dbx_dynamic_symtab): Delete.
	(process_one_symbol): Remove references to
	block_address_function_relative.
	* defs.h (GDB_OSABI_FREEBSD_AOUT, GDB_OSABI_NETBSD_AOUT): Remove.
	(GDB_OSABI_FREEBSD_ELF): Rename to ...
	(GDB_OSABI_FREEBSD): ... this.
	(GDB_OSABI_NETBSD_ELF): Rename to ...
	(GDB_OSABI_NETBSD): ... this.
	(GDB_OSABI_OPENBSD_ELF): Rename to ...
	(GDB_OSABI_OPENBSD): ... this.
	(GDB_OSABI_HPUX_ELF, GDB_OSABI_HPUX_SOM): Remove.
	* fbsd-tdep.c: Adjust comment.
	* hppa-nbsd-tdep.c (_initialize_hppanbsd_tdep): Adjust.
	* hppa-obsd-tdep.c (GDB_OSABI_NETBSD_CORE): Delete.
	(hppaobsd_core_osabi_sniffer): Delete.
	(_initialize_hppabsd_tdep): Don't handle a.out.
	* hppa-tdep.c (hppa_stub_frame_unwind_cache): Don't handle
	GDB_OSABI_HPUX_SOM.
	(hppa_gdbarch_init): Likewise.
	* i386-bsd-tdep.c (i386bsd_aout_osabi_sniffer)
	(i386bsd_core_osabi_sniffer, _initialize_i386bsd_tdep): Delete.
	* i386-fbsd-tdep.c (i386fbsdaout_init_abi): Delete.  Merge bits
	with ...
	(i386fbsd_init_abi): ... this.
	(_initialize_i386fbsd_tdep): Don't handle a.out.
	* i386-nbsd-tdep.c (_initialize_i386nbsd_tdep): Adjust.
	* i386-obsd-tdep.c (i386obsd_aout_supply_regset)
	(i386obsd_aout_gregset)
	(i386obsd_aout_iterate_over_regset_sections): Delete.
	(i386obsd_init_abi): Merge with i386obsd_elf_init_abi.
	(i386obsd_aout_init_abi): Delete.
	(_initialize_i386obsd_tdep): Don't handle a.out.
	* m68k-bsd-tdep.c (m68kobsd_sigtramp_cache_init)
	(m68kobsd_sigtramp): Delete.
	(m68kbsd_init_abi): Merge with ...
	(m68kbsd_elf_init_abi): ... this, and delete it.
	(m68kbsd_aout_init_abi): Delete.
	(m68kbsd_aout_osabi_sniffer, m68kbsd_core_osabi_sniffer): Delete.
	(_initialize_m68kbsd_tdep): Don't handle a.out.
	* mips-nbsd-tdep.c (_initialize_mipsnbsd_tdep): Adjust.
	* mips64-obsd-tdep.c (_initialize_mips64obsd_tdep): Adjust.
	* osabi.c (gdb_osabi_names): Remove "a.out" entries.  Drop "ELF"
	suffixes.  Remove "HP-UX" entries.
	(generic_elf_osabi_sniff_abi_tag_sections): Adjust.
	(generic_elf_osabi_sniffer): No longer handle GDB_OSABI_HPUX_ELF.
	Adjust.
	(_initialize_ppcfbsd_tdep): Adjust.
	* ppc-nbsd-tdep.c (_initialize_ppcnbsd_tdep): Adjust.
	* ppc-obsd-tdep.c (GDB_OSABI_NETBSD_CORE)
	(ppcobsd_core_osabi_sniffer): Delete.
	(_initialize_ppcobsd_tdep): Don't handle a.out.
	* rs6000-tdep.c (rs6000_gdbarch_init): Adjust.
	* sh-nbsd-tdep.c (GDB_OSABI_NETBSD_CORE)
	(shnbsd_core_osabi_sniffer): Delete.
	(_initialize_shnbsd_tdep): Don't handle a.out.
	* solib.c (clear_solib): Don't handle SunOS/a.out.
	* sparc-nbsd-tdep.c (sparc32nbsd_init_abi): Make extern.
	(sparc32nbsd_aout_init_abi): Delete.
	(sparc32nbsd_elf_init_abi): Merged into sparc32nbsd_init_abi.
	(sparcnbsd_aout_osabi_sniffer): Delete.
	(GDB_OSABI_NETBSD_CORE, sparcnbsd_core_osabi_sniffer): Delete.
	(_initialize_sparcnbsd_tdep): No longer handle a.out.
	* sparc-obsd-tdep.c (sparc32obsd_init_abi)
	(_initialize_sparc32obsd_tdep): Adjust.
	* sparc-tdep.h (sparc32nbsd_elf_init_abi): Rename to ...
	(sparc32nbsd_init_abi): ... this.
	* sparc64-fbsd-tdep.c (_initialize_sparc64fbsd_tdep): Adjust.
	* sparc64-nbsd-tdep.c (_initialize_sparc64nbsd_tdep): Adjust.
	* sparc64-obsd-tdep.c (_initialize_sparc64obsd_tdep): Adjust.
	* stabsread.c: Update comment.
	* symmisc.c (print_objfile_statistics): Don't mention "a.out" in
	output.
	* vax-nbsd-tdep.c (_initialize_vaxnbsd_tdep): Adjust.
	* vax-obsd-tdep.c: Delete file.

1 files changed, 3 insertions, 68 deletions

diff --git a/gdb/i386-obsd-tdep.c b/gdb/i386-obsd-tdep.c
index 08becfa..5495c54 100644
--- a/gdb/i386-obsd-tdep.c
+++ b/gdb/i386-obsd-tdep.c
@@ -134,40 +134,6 @@ static int i386obsd_r_reg_offset[] =
   15 * 4			/* %gs */
 };
 
-static void
-i386obsd_aout_supply_regset (const struct regset *regset,
-			     struct regcache *regcache, int regnum,
-			     const void *regs, size_t len)
-{
-  struct gdbarch *gdbarch = get_regcache_arch (regcache);
-  const struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-  const gdb_byte *gregs = (const gdb_byte *) regs;
-
-  gdb_assert (len >= tdep->sizeof_gregset + I387_SIZEOF_FSAVE);
-
-  i386_supply_gregset (regset, regcache, regnum, regs, tdep->sizeof_gregset);
-  i387_supply_fsave (regcache, regnum, gregs + tdep->sizeof_gregset);
-}
-
-static const struct regset i386obsd_aout_gregset =
-  {
-    NULL, i386obsd_aout_supply_regset, NULL
-  };
-
-static void
-i386obsd_aout_iterate_over_regset_sections (struct gdbarch *gdbarch,
-					    iterate_over_regset_sections_cb *cb,
-					    void *cb_data,
-					    const struct regcache *regcache)
-{
-  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-
-  /* OpenBSD a.out core dumps don't use seperate register sets for the
-     general-purpose and floating-point registers.  */
-
-  cb (".reg", tdep->sizeof_gregset + I387_SIZEOF_FSAVE,
-      &i386obsd_aout_gregset, NULL, cb_data);
-}
 
 
 /* Sigtramp routine location for OpenBSD 3.1 and earlier releases.  */
@@ -445,6 +411,7 @@ i386obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   /* Obviously OpenBSD is BSD-based.  */
   i386bsd_init_abi (info, gdbarch);
   obsd_init_abi (info, gdbarch);
+  i386_elf_init_abi (info, gdbarch);
 
   /* OpenBSD has a different `struct reg'.  */
   tdep->gregset_reg_offset = i386obsd_r_reg_offset;
@@ -470,30 +437,6 @@ i386obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 
   /* Unwind kernel trap frames correctly.  */
   frame_unwind_prepend_unwinder (gdbarch, &i386obsd_trapframe_unwind);
-}
-
-/* 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_iterate_over_regset_sections
-    (gdbarch, i386obsd_aout_iterate_over_regset_sections);
-}
-
-/* OpenBSD ELF.  */
-
-static void
-i386obsd_elf_init_abi (struct gdbarch_info info, struct gdbarch *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_solib_svr4_fetch_link_map_offsets
@@ -507,14 +450,6 @@ void _initialize_i386obsd_tdep (void);
 void
 _initialize_i386obsd_tdep (void)
 {
-  /* 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, 0, GDB_OSABI_OPENBSD_AOUT,
-			  i386obsd_aout_init_abi);
-  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_OPENBSD_ELF,
-			  i386obsd_elf_init_abi);
+  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_OPENBSD,
+			  i386obsd_init_abi);
 }