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, 2 insertions, 109 deletions

diff --git a/gdb/m68k-bsd-tdep.c b/gdb/m68k-bsd-tdep.c
index 0d2a4e9..349774d 100644
--- a/gdb/m68k-bsd-tdep.c
+++ b/gdb/m68k-bsd-tdep.c
@@ -129,60 +129,6 @@ m68kbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
 }
 
 
-/* Signal trampolines.  */
-
-static void
-m68kobsd_sigtramp_cache_init (const struct tramp_frame *self,
-			      struct frame_info *this_frame,
-			      struct trad_frame_cache *this_cache,
-			      CORE_ADDR func)
-{
-  CORE_ADDR addr, base, pc;
-  int regnum;
-
-  base = get_frame_register_unsigned (this_frame, M68K_SP_REGNUM);
-
-  /* The 'addql #4,%sp' instruction at offset 8 adjusts the stack
-     pointer.  Adjust the frame base accordingly.  */
-  pc = get_frame_register_unsigned (this_frame, M68K_PC_REGNUM);
-  if ((pc - func) > 8)
-    base -= 4;
-
-  /* Get frame pointer, stack pointer, program counter and processor
-     state from `struct sigcontext'.  */
-  addr = get_frame_memory_unsigned (this_frame, base + 8, 4);
-  trad_frame_set_reg_addr (this_cache, M68K_FP_REGNUM, addr + 8);
-  trad_frame_set_reg_addr (this_cache, M68K_SP_REGNUM, addr + 12);
-  trad_frame_set_reg_addr (this_cache, M68K_PC_REGNUM, addr + 20);
-  trad_frame_set_reg_addr (this_cache, M68K_PS_REGNUM, addr + 24);
-
-  /* The sc_ap member of `struct sigcontext' points to additional
-     hardware state.  Here we find the missing registers.  */
-  addr = get_frame_memory_unsigned (this_frame, addr + 16, 4) + 4;
-  for (regnum = M68K_D0_REGNUM; regnum < M68K_FP_REGNUM; regnum++, addr += 4)
-    trad_frame_set_reg_addr (this_cache, regnum, addr);
-
-  /* Construct the frame ID using the function start.  */
-  trad_frame_set_id (this_cache, frame_id_build (base, func));
-}
-
-static const struct tramp_frame m68kobsd_sigtramp = {
-  SIGTRAMP_FRAME,
-  2,
-  {
-    { 0x206f, -1 }, { 0x000c, -1},	/* moveal %sp@(12),%a0 */
-    { 0x4e90, -1 },			/* jsr %a0@ */
-    { 0x588f, -1 },			/* addql #4,%sp */
-    { 0x4e41, -1 },			/* trap #1 */
-    { 0x2f40, -1 }, { 0x0004, -1 },	/* moveal %d0,%sp@(4) */
-    { 0x7001, -1 },			/* moveq #SYS_exit,%d0 */
-    { 0x4e40, -1 },			/* trap #0 */
-    { TRAMP_SENTINEL_INSN, -1 }
-  },
-  m68kobsd_sigtramp_cache_init
-};
-
-
 static void
 m68kbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
@@ -195,30 +141,6 @@ m68kbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 
   set_gdbarch_iterate_over_regset_sections
     (gdbarch, m68kbsd_iterate_over_regset_sections);
-}
-
-/* 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;
-
-  tramp_frame_prepend_unwinder (gdbarch, &m68kobsd_sigtramp);
-}
-
-/* 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);
 
   /* NetBSD ELF uses the SVR4 ABI.  */
   m68k_svr4_init_abi (info, gdbarch);
@@ -230,41 +152,12 @@ m68kbsd_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 }
 
 
-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);
+  gdbarch_register_osabi (bfd_arch_m68k, 0, GDB_OSABI_NETBSD,
+			  m68kbsd_init_abi);
 }