* config/i386/linux.h (NO_PROFILE_COUNTERS): Define to 1.
	* config/i386/freebsd.h (NO_PROFILE_COUNTERS): Likewise.
	* config/i386/netbsd-elf.h (NO_PROFILE_COUNTERS): Likewise.
	* config/xtensa/xtensa.h (NO_PROFILE_COUTNERS): Likewise.
	* config/darwin.h (NO_PROFILE_COUNTERS): Likewise.
	* final.c (NO_PROFILE_COUNTERS): Define to 0 if not defined.
	(profile_function): Allow NO_PROFILE_COUNTERS to be non-constant.
	* config/rs6000/rs6000.c (output_profile_hook): Likewise.

	* configure.in (powerpc*-*, s390*-*): Set tls_as_opt.
	Pass it to $gcc_cv_as.
	* configure: Rebuilt.

	* config/rs6000/rs6000.c (rs6000_abi_name): Remove initializer.
	(print_operand): Allow TARGET_AIX to be non-constant.
	(rs6000_aix_emit_builtin_unwind_init, rs6000_emit_eh_toc_restore):
	Define unconditionally.
	(rs6000_elf_declare_function_name): New function.
	* config/rs6000/rs6000.md (eh_return): Allow TARGET_AIX to be
	non-constant.
	* config/rs6000/linux64.h [!RS6000_BI_ARCH] (TARGET_64BIT): Define
	to 1.
	(DEFAULT_ARCH64_P, RS6000_BI_ARCH_P): Define.
	[IN_LIBGCC2] (TARGET_64BIT): Define based on whether __powerpc64__
	is defined.
	(TARGET_AIX): Define to 1 if TARGET_64BIT.
	(PROCESSOR_DEFAULT): Remove.
	(TARGET_RELOCATABLE, RS6000_ABI_NAME, INVALID_64BIT,
	INVALID_32BIT, SUBSUBTARGET_OVERRIDE_OPTIONS): Define.
	[RS6000_BI_ARCH] (OVERRIDE_OPTIONS, ASM_FILE_START): Define.
	(ASM_DEFAULT_SPEC, ASM_SPEC, LINK_OS_LINUX_SPEC): Define for both
	-m32 and -m64.
	(MULTILIB_DEFAULTS): Define.
	(SUBSUBTARGET_EXTRA_SPECS): Define.
	(ASM_SPEC32, ASM_SPEC64, ASM_SPEC_COMMON): Define.
	(TARGET_TOC): Define only if !RS6000_BI_ARCH.
	(TARGET_NO_TOC): Remove.
	[!RS6000_BI_ARCH] (TARGET_RELOCATABLE, TARGET_EABI,
	TARGET_PROTOTYPE): Define to 0.
	(NO_PROFILE_COUNTERS): Define to TARGET_64BIT.
	(PROFILE_HOOK): Only call output_profile_hook if TARGET_64BIT.
	(ADJUST_FIELD_ALIGN, ROUND_TYPE_ALIGN): Adjust to work properly
	if !TARGET_64BIT.
	(USER_LABEL_PREFIX): Remove.
	(JUMP_TABLES_IN_TEXT_SECTION): Define to TARGET_64BIT.
	(SETUP_FRAME_ADDRESSES): Only call rs6000_aix_emit_builtin_unwind_init
	if TARGET_64BIT.
	(TARGET_OS_CPP_BUILTINS): Handle both -m32 and -m64.
	(LINK_OS_LINUX_SPEC32, LINK_OS_LINUX_SPEC64): Define.
	(STARTFILE_LINUX_SPEC, ENDFILE_LINUX_SPEC): Remove.
	(TOC_SECTION_ASM_OP): Define depending on TARGET_64BIT.
	(MINIMAL_TOC_SECTION_ASM_OP): Likewise.
	(SIZE_TYPE, PTRDIFF_TYPE, WCHAR_TYPE): Define depending on
	TARGET_64BIT.
	(RS6000_CALL_GLUE): Likewise.
	(SAVE_FP_PREFIX, SAVE_FP_SUFFIX, RESTORE_FP_PREFIX,
	RESTORE_FP_SUFFIX): Likewise.
	(ASM_DECLARE_FUNCTION_NAME): Remove.
	(ASM_DECLARE_FUNCTION_SIZE, ASM_OUTPUT_SOURCE_LINE,
	DBX_OUTPUT_BRAC, DBX_OUTPUT_NFUN): Only output dot before function
	name if TARGET_64BIT.
	(ASM_OUTPUT_SPECIAL_POOL_ENTRY_P): Handle both TARGET_64BIT and
	!TARGET_64BIT.
	(ASM_OUTPUT_REG_PUSH, ASM_OUTPUT_REG_POP): Remove undefs.
	(ASM_PREFERRED_EH_DATA_FORMAT): Take TARGET_64BIT into account.
	(DRAFT_V4_STRUCT_RET): Define.
	(SIGNAL_FRAMESIZE): New enum value.
	(MD_FALLBACK_FRAME_STATE_FOR): Define.
	* config/rs6000/default64.h: New file.
	* config/rs6000/sysv4.h (SUBTARGET_SWITCHES): Add -m32 and -m64
	options.
	(SUBTARGET_OVERRIDE_OPTIONS): If rs6000_abi_name is NULL, set it
	to RS6000_ABI_NAME.  Only disallow mixing of -fPIC with -mcall-aixdesc
	if !TARGET_64BIT.
	[!RS6000_BI_ARCH] (SUBSUBTARGET_OVERRIDE_OPTIONS): Define.
	(ASM_DECLARE_FUNCTION_NAME): Use rs6000_elf_declare_function_name
	function.
	(TARGET_OS_SYSV_CPP_BUILTINS): Define.
	(TARGET_OS_CPP_BUILTINS): Use it.
	(CPP_SYSV_SPEC): Remove.
	(CPP_SPEC): Remove cpp_sysv.
	(SUBTARGET_EXTRA_SPECS): Remove cpp_sysv.
	Add SUBSUBTARGET_EXTRA_SPECS.
	(SUBSUBTARGET_EXTRA_SPECS): Define.
	* config/rs6000/biarch64.h: New file.
	* config/rs6000/rs6000-protos.h (rs6000_elf_declare_function_name):
	New prototype.
	* config/rs6000/x-linux64: New file.
	* config/rs6000/t-linux64: Build -m64, -m32 and -m32 -msoft-float
	multilibs.
	* config/rs6000/eabi-ci.asm: Protect with #ifndef __powerpc64__.
	* config/rs6000/eabi-cn.asm: Likewise.
	* config/rs6000/tramp.asm: Likewise.
	* config/rs6000/sol-ci.asm: Likewise.
	* config/rs6000/sol-cn.asm: Likewise.
	* config/rs6000/linux.h (TARGET_64BIT): Define to 0.
	(TARGET_OS_CPP_BUILTINS): Use TARGET_OS_SYSV_CPP_BUILTINS.
	* config/rs6000/ppc-asm.h: Move __powerpc64__ section before
	_CALL_AIXDESC section.
	* config.gcc (powerpc64-*-linux*): Configure a bi-arch compiler,
	defaulting to -m64 unless --with-cpu= is one of the 32-bit CPUs
	or default32.

Co-Authored-By: Alan Modra <amodra@bigpond.net.au>

From-SVN: r67442