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pkgsrc-ng/lang/gcc45/patches/patch-gcc_config_rs6000_netbsd64.h
Lionel Sambuc 612ad0a18c lang/gcc45
2016-01-22 00:09:29 +01:00

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$NetBSD$
--- gcc/config/rs6000/netbsd64.h.orig Wed May 21 19:48:54 2014
+++ gcc/config/rs6000/netbsd64.h
@@ -0,0 +1,566 @@
+/* Definitions of target machine for GNU compiler,
+ for 64 bit PowerPC NetBSD.
+ Copyright (C) 2006 Free Software Foundation, Inc.
+ Contributed by Matthew Green (mrg@eterna.com.au).
+
+ This file is part of GCC.
+
+ GCC 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, or (at your
+ option) any later version.
+
+ GCC 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 GCC; see the file COPYING. If not, write to the
+ Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+#ifndef RS6000_BI_ARCH
+
+#undef DEFAULT_ABI
+#define DEFAULT_ABI ABI_AIX
+
+#undef TARGET_64BIT
+#define TARGET_64BIT 1
+
+#define DEFAULT_ARCH64_P 1
+#define RS6000_BI_ARCH_P 0
+
+#else
+
+#define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT)
+#define RS6000_BI_ARCH_P 1
+
+#endif
+
+#ifdef IN_LIBGCC2
+#undef TARGET_64BIT
+#ifdef __powerpc64__
+#define TARGET_64BIT 1
+#else
+#define TARGET_64BIT 0
+#endif
+#endif
+
+#undef TARGET_AIX
+#define TARGET_AIX TARGET_64BIT
+
+#ifdef HAVE_LD_NO_DOT_SYMS
+/* New ABI uses a local sym for the function entry point. */
+extern int dot_symbols;
+#undef DOT_SYMBOLS
+#define DOT_SYMBOLS dot_symbols
+#endif
+
+#define TARGET_PROFILE_KERNEL profile_kernel
+
+#undef PROCESSOR_DEFAULT
+#define PROCESSOR_DEFAULT PROCESSOR_POWER4
+#undef PROCESSOR_DEFAULT64
+#define PROCESSOR_DEFAULT64 PROCESSOR_POWER4
+
+/* We don't need to generate entries in .fixup, except when
+ -mrelocatable or -mrelocatable-lib is given. */
+#undef RELOCATABLE_NEEDS_FIXUP
+#define RELOCATABLE_NEEDS_FIXUP \
+ (target_flags & target_flags_explicit & MASK_RELOCATABLE)
+
+#undef RS6000_ABI_NAME
+#define RS6000_ABI_NAME "netbsd"
+
+#define INVALID_64BIT "-m%s not supported in this configuration"
+#define INVALID_32BIT INVALID_64BIT
+
+#undef SUBSUBTARGET_OVERRIDE_OPTIONS
+#define SUBSUBTARGET_OVERRIDE_OPTIONS \
+ do \
+ { \
+ if (!rs6000_explicit_options.alignment) \
+ rs6000_alignment_flags = MASK_ALIGN_NATURAL; \
+ if (TARGET_64BIT) \
+ { \
+ if (DEFAULT_ABI != ABI_AIX) \
+ { \
+ rs6000_current_abi = ABI_AIX; \
+ error (INVALID_64BIT, "call"); \
+ } \
+ dot_symbols = !strcmp (rs6000_abi_name, "aixdesc"); \
+ if (target_flags & MASK_RELOCATABLE) \
+ { \
+ target_flags &= ~MASK_RELOCATABLE; \
+ error (INVALID_64BIT, "relocatable"); \
+ } \
+ if (target_flags & MASK_EABI) \
+ { \
+ target_flags &= ~MASK_EABI; \
+ error (INVALID_64BIT, "eabi"); \
+ } \
+ if (TARGET_PROTOTYPE) \
+ { \
+ target_prototype = 0; \
+ error (INVALID_64BIT, "prototype"); \
+ } \
+ if ((target_flags & MASK_POWERPC64) == 0) \
+ { \
+ target_flags |= MASK_POWERPC64; \
+ error ("-m64 requires a PowerPC64 cpu"); \
+ } \
+ } \
+ else \
+ { \
+ if (!RS6000_BI_ARCH_P) \
+ error (INVALID_32BIT, "32"); \
+ if (TARGET_PROFILE_KERNEL) \
+ { \
+ TARGET_PROFILE_KERNEL = 0; \
+ error (INVALID_32BIT, "profile-kernel"); \
+ } \
+ } \
+ } \
+ while (0)
+
+#ifdef RS6000_BI_ARCH
+
+#undef OVERRIDE_OPTIONS
+#define OVERRIDE_OPTIONS \
+ rs6000_override_options (((TARGET_DEFAULT ^ target_flags) & MASK_64BIT) \
+ ? (char *) 0 : TARGET_CPU_DEFAULT)
+
+#endif
+
+#undef ASM_DEFAULT_SPEC
+#undef ASM_SPEC
+#undef LINK_OS_NETBSD_SPEC
+
+#ifndef RS6000_BI_ARCH
+#define ASM_DEFAULT_SPEC "-mppc64"
+#define ASM_SPEC "%(asm_spec64) %(asm_spec_common)"
+#define LINK_OS_NETBSD_SPEC "%(link_os_netbsd_spec64)"
+#else
+#if DEFAULT_ARCH64_P
+#define ASM_DEFAULT_SPEC "-mppc%{!m32:64}"
+#define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)"
+#define LINK_OS_NETBSD_SPEC "%{m32:%(link_os_netbsd_spec32)}%{!m32:%(link_os_netbsd_spec64)}"
+#else
+#define ASM_DEFAULT_SPEC "-mppc%{m64:64}"
+#define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"
+#define LINK_OS_NETBSD_SPEC "%{!m64:%(link_os_netbsd_spec32)}%{m64:%(link_os_netbsd_spec64)}"
+#endif
+#endif
+
+#define ASM_SPEC32 "-a32 %{n} %{T} %{Ym,*} %{Yd,*} \
+%{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
+%{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
+%{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
+ %{mcall-freebsd: -mbig} \
+ %{mcall-i960-old: -mlittle} \
+ %{mcall-linux: -mbig} \
+ %{mcall-gnu: -mbig} \
+ %{mcall-netbsd: -mbig} \
+}}}}"
+
+#define ASM_SPEC64 "-a64"
+
+#define ASM_SPEC_COMMON "%(asm_cpu) \
+%{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
+%{v:-V} %{Qy:} %{!Qn:-Qy} %{Wa,*:%*} \
+%{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian}"
+
+#undef SUBSUBTARGET_EXTRA_SPECS
+#define SUBSUBTARGET_EXTRA_SPECS \
+ { "asm_spec_common", ASM_SPEC_COMMON }, \
+ { "asm_spec32", ASM_SPEC32 }, \
+ { "asm_spec64", ASM_SPEC64 }, \
+ { "link_os_netbsd_spec32", LINK_OS_NETBSD_SPEC32 }, \
+ { "link_os_netbsd_spec64", LINK_OS_NETBSD_SPEC64 },
+
+#undef MULTILIB_DEFAULTS
+#if DEFAULT_ARCH64_P
+#define MULTILIB_DEFAULTS { "m64" }
+#else
+#define MULTILIB_DEFAULTS { "m32" }
+#endif
+
+#ifndef RS6000_BI_ARCH
+
+/* 64-bit PowerPC NetBSD is always big-endian. */
+#undef TARGET_LITTLE_ENDIAN
+#define TARGET_LITTLE_ENDIAN 0
+
+/* 64-bit PowerPC NetBSD always has a TOC. */
+#undef TARGET_TOC
+#define TARGET_TOC 1
+
+/* Some things from sysv4.h we don't do when 64 bit. */
+#undef TARGET_RELOCATABLE
+#define TARGET_RELOCATABLE 0
+#undef TARGET_EABI
+#define TARGET_EABI 0
+#undef TARGET_PROTOTYPE
+#define TARGET_PROTOTYPE 0
+#undef RELOCATABLE_NEEDS_FIXUP
+#define RELOCATABLE_NEEDS_FIXUP 0
+
+#endif
+
+/* PowerPC64 NetBSD word-aligns FP doubles when -malign-power is given. */
+#undef ADJUST_FIELD_ALIGN
+#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
+ ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
+ ? 128 \
+ : (TARGET_64BIT \
+ && TARGET_ALIGN_NATURAL == 0 \
+ && TYPE_MODE (strip_array_types (TREE_TYPE (FIELD))) == DFmode) \
+ ? MIN ((COMPUTED), 32) \
+ : (COMPUTED))
+
+/* PowerPC64 NetBSD increases natural record alignment to doubleword if
+ the first field is an FP double, only if in power alignment mode. */
+#undef ROUND_TYPE_ALIGN
+#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
+ ((TARGET_64BIT \
+ && (TREE_CODE (STRUCT) == RECORD_TYPE \
+ || TREE_CODE (STRUCT) == UNION_TYPE \
+ || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
+ && TARGET_ALIGN_NATURAL == 0) \
+ ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \
+ : MAX ((COMPUTED), (SPECIFIED)))
+
+/* Use the default for compiling target libs. */
+#ifdef IN_TARGET_LIBS
+#undef TARGET_ALIGN_NATURAL
+#define TARGET_ALIGN_NATURAL 1
+#endif
+
+/* Indicate that jump tables go in the text section. */
+#undef JUMP_TABLES_IN_TEXT_SECTION
+#define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT
+
+/* The linux ppc64 ABI isn't explicit on whether aggregates smaller
+ than a doubleword should be padded upward or downward. You could
+ reasonably assume that they follow the normal rules for structure
+ layout treating the parameter area as any other block of memory,
+ then map the reg param area to registers. i.e. pad upward.
+ Setting both of the following defines results in this behavior.
+ Setting just the first one will result in aggregates that fit in a
+ doubleword being padded downward, and others being padded upward.
+ Not a bad idea as this results in struct { int x; } being passed
+ the same way as an int. */
+#define AGGREGATE_PADDING_FIXED TARGET_64BIT
+#define AGGREGATES_PAD_UPWARD_ALWAYS 0
+
+/* Specify padding for the last element of a block move between
+ registers and memory. FIRST is nonzero if this is the only
+ element. */
+#define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
+ (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE))
+
+/* Override svr4.h */
+#undef MD_EXEC_PREFIX
+#undef MD_STARTFILE_PREFIX
+
+/* NetBSD doesn't support saving and restoring 64-bit regs in a 32-bit
+ process. XXXMRG? */
+#define OS_MISSING_POWERPC64 !TARGET_64BIT
+
+/* NetBSD has float and long double forms of math functions. */
+#undef TARGET_C99_FUNCTIONS
+#define TARGET_C99_FUNCTIONS 1
+
+/* NetBSD doesn't have sincos that follows the GNU extension. */
+#undef TARGET_HAS_SINCOS
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ NETBSD_OS_CPP_BUILTINS_ELF(); \
+ if (TARGET_64BIT) \
+ { \
+ builtin_define ("__PPC__"); \
+ builtin_define ("__PPC64__"); \
+ builtin_define ("__powerpc__"); \
+ builtin_define ("__powerpc64__"); \
+ builtin_define_with_int_value ("__PIC__", 2); \
+ builtin_assert ("cpu=powerpc64"); \
+ builtin_assert ("machine=powerpc64"); \
+ } \
+ else \
+ { \
+ builtin_define_std ("PPC"); \
+ builtin_define_std ("powerpc"); \
+ builtin_assert ("cpu=powerpc"); \
+ builtin_assert ("machine=powerpc"); \
+ TARGET_OS_SYSV_CPP_BUILTINS (); \
+ } \
+ } \
+ while (0)
+
+/* Override the default from rs6000.h to avoid conflicts with macros
+ defined in NetBSD header files. */
+
+#undef RS6000_CPU_CPP_ENDIAN_BUILTINS
+#define RS6000_CPU_CPP_ENDIAN_BUILTINS() \
+ do \
+ { \
+ builtin_define ("__BIG_ENDIAN__"); \
+ builtin_assert ("machine=bigendian"); \
+ } \
+ while (0)
+
+#undef CPP_OS_DEFAULT_SPEC
+#define CPP_OS_DEFAULT_SPEC "%(cpp_os_netbsd)"
+
+#undef LINK_SHLIB_SPEC
+#define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
+
+#undef LIB_DEFAULT_SPEC
+#define LIB_DEFAULT_SPEC "%(lib_netbsd)"
+
+#undef STARTFILE_DEFAULT_SPEC
+#define STARTFILE_DEFAULT_SPEC "%(startfile_netbsd)"
+
+#undef ENDFILE_DEFAULT_SPEC
+#define ENDFILE_DEFAULT_SPEC "%(endfile_netbsd)"
+
+#undef CRTSAVRES_DEFAULT_SPEC
+#define CRTSAVRES_DEFAULT_SPEC ""
+
+#undef LINK_START_DEFAULT_SPEC
+#define LINK_START_DEFAULT_SPEC "%(link_start_netbsd)"
+
+#undef LINK_OS_DEFAULT_SPEC
+#define LINK_OS_DEFAULT_SPEC "%(link_os_netbsd)"
+
+#define LINK_OS_NETBSD_SPEC32 "-m elf32ppc %{!shared: %{!static: \
+ %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
+
+#define LINK_OS_NETBSD_SPEC64 "-m elf64ppc %{!shared: %{!static: \
+ %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
+
+#undef TOC_SECTION_ASM_OP
+#define TOC_SECTION_ASM_OP \
+ (TARGET_64BIT \
+ ? "\t.section\t\".toc\",\"aw\"" \
+ : "\t.section\t\".got\",\"aw\"")
+
+#undef MINIMAL_TOC_SECTION_ASM_OP
+#define MINIMAL_TOC_SECTION_ASM_OP \
+ (TARGET_64BIT \
+ ? "\t.section\t\".toc1\",\"aw\"" \
+ : ((TARGET_RELOCATABLE || flag_pic) \
+ ? "\t.section\t\".got2\",\"aw\"" \
+ : "\t.section\t\".got1\",\"aw\""))
+
+#undef TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (PowerPC64 NetBSD)");
+
+/* Make GCC agree with <machine/ansi.h>. */
+
+#undef SIZE_TYPE
+#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int")
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+/* Override rs6000.h definition. */
+#undef ASM_APP_ON
+#define ASM_APP_ON "#APP\n"
+
+/* Override rs6000.h definition. */
+#undef ASM_APP_OFF
+#define ASM_APP_OFF "#NO_APP\n"
+
+/* PowerPC no-op instruction. */
+#undef RS6000_CALL_GLUE
+#define RS6000_CALL_GLUE (TARGET_64BIT ? "nop" : "cror 31,31,31")
+
+#undef RS6000_MCOUNT
+#define RS6000_MCOUNT "_mcount"
+
+#ifdef __powerpc64__
+/* _init and _fini functions are built from bits spread across many
+ object files, each potentially with a different TOC pointer. For
+ that reason, place a nop after the call so that the linker can
+ restore the TOC pointer if a TOC adjusting call stub is needed. */
+#if DOT_SYMBOLS
+#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
+ asm (SECTION_OP "\n" \
+" bl ." #FUNC "\n" \
+" nop\n" \
+" .previous");
+#else
+#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
+ asm (SECTION_OP "\n" \
+" bl " #FUNC "\n" \
+" nop\n" \
+" .previous");
+#endif
+#endif
+
+/* FP save and restore routines. */
+#undef SAVE_FP_PREFIX
+#define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_")
+#undef SAVE_FP_SUFFIX
+#define SAVE_FP_SUFFIX (TARGET_64BIT ? "" : "_l")
+#undef RESTORE_FP_PREFIX
+#define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_")
+#undef RESTORE_FP_SUFFIX
+#define RESTORE_FP_SUFFIX (TARGET_64BIT ? "" : "_l")
+
+/* Dwarf2 debugging. */
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
+
+/* This is how to declare the size of a function. */
+#undef ASM_DECLARE_FUNCTION_SIZE
+#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
+ do \
+ { \
+ if (!flag_inhibit_size_directive) \
+ { \
+ fputs ("\t.size\t", (FILE)); \
+ if (TARGET_64BIT && DOT_SYMBOLS) \
+ putc ('.', (FILE)); \
+ assemble_name ((FILE), (FNAME)); \
+ fputs (",.-", (FILE)); \
+ rs6000_output_function_entry (FILE, FNAME); \
+ putc ('\n', (FILE)); \
+ } \
+ } \
+ while (0)
+
+/* Return nonzero if this entry is to be written into the constant
+ pool in a special way. We do so if this is a SYMBOL_REF, LABEL_REF
+ or a CONST containing one of them. If -mfp-in-toc (the default),
+ we also do this for floating-point constants. We actually can only
+ do this if the FP formats of the target and host machines are the
+ same, but we can't check that since not every file that uses
+ the macros includes real.h. We also do this when we can write the
+ entry into the TOC and the entry is not larger than a TOC entry. */
+
+#undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
+#define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
+ (TARGET_TOC \
+ && (GET_CODE (X) == SYMBOL_REF \
+ || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
+ && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
+ || GET_CODE (X) == LABEL_REF \
+ || (GET_CODE (X) == CONST_INT \
+ && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
+ || (GET_CODE (X) == CONST_DOUBLE \
+ && ((TARGET_64BIT \
+ && (TARGET_MINIMAL_TOC \
+ || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
+ && ! TARGET_NO_FP_IN_TOC))) \
+ || (!TARGET_64BIT \
+ && !TARGET_NO_FP_IN_TOC \
+ && !TARGET_RELOCATABLE \
+ && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
+ && BITS_PER_WORD == HOST_BITS_PER_INT)))))
+
+/* This ABI cannot use DBX_LINES_FUNCTION_RELATIVE, nor can it use
+ dbxout_stab_value_internal_label_diff, because we must
+ use the function code label, not the function descriptor label. */
+#define DBX_OUTPUT_SOURCE_LINE(FILE, LINE, COUNTER) \
+do \
+ { \
+ char temp[256]; \
+ const char *s; \
+ ASM_GENERATE_INTERNAL_LABEL (temp, "LM", COUNTER); \
+ dbxout_begin_stabn_sline (LINE); \
+ assemble_name (FILE, temp); \
+ putc ('-', FILE); \
+ s = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); \
+ rs6000_output_function_entry (FILE, s); \
+ putc ('\n', FILE); \
+ targetm.asm_out.internal_label (FILE, "LM", COUNTER); \
+ COUNTER += 1; \
+ } \
+while (0)
+
+/* Similarly, we want the function code label here. Cannot use
+ dbxout_stab_value_label_diff, as we have to use
+ rs6000_output_function_entry. FIXME. */
+#define DBX_OUTPUT_BRAC(FILE, NAME, BRAC) \
+ do \
+ { \
+ const char *s; \
+ dbxout_begin_stabn (BRAC); \
+ s = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); \
+ /* dbxout_block passes this macro the function name as NAME, \
+ assuming that it is the function code start label. In our \
+ case, the function name is the OPD entry. dbxout_block is \
+ broken, hack around it here. */ \
+ if (NAME == s) \
+ putc ('0', FILE); \
+ else \
+ { \
+ assemble_name (FILE, NAME); \
+ putc ('-', FILE); \
+ rs6000_output_function_entry (FILE, s); \
+ } \
+ putc ('\n', FILE); \
+ } \
+ while (0)
+
+#define DBX_OUTPUT_LBRAC(FILE, NAME) DBX_OUTPUT_BRAC (FILE, NAME, N_LBRAC)
+#define DBX_OUTPUT_RBRAC(FILE, NAME) DBX_OUTPUT_BRAC (FILE, NAME, N_RBRAC)
+
+/* Another case where we want the dot name. */
+#define DBX_OUTPUT_NFUN(FILE, LSCOPE, DECL) \
+ do \
+ { \
+ const char *s; \
+ dbxout_begin_empty_stabs (N_FUN); \
+ assemble_name (FILE, LSCOPE); \
+ putc ('-', FILE); \
+ s = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); \
+ rs6000_output_function_entry (FILE, s); \
+ putc ('\n', FILE); \
+ } \
+ while (0)
+
+/* Select a format to encode pointers in exception handling data. CODE
+ is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
+ true if the symbol may be affected by dynamic relocations. */
+#undef ASM_PREFERRED_EH_DATA_FORMAT
+#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
+ ((TARGET_64BIT || flag_pic || TARGET_RELOCATABLE) \
+ ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \
+ | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \
+ : DW_EH_PE_absptr)
+
+/* For backward compatibility, we must continue to use the AIX
+ structure return convention. */
+#undef DRAFT_V4_STRUCT_RET
+#define DRAFT_V4_STRUCT_RET (!TARGET_64BIT)
+
+#define TARGET_ASM_FILE_END rs6000_elf_end_indicate_exec_stack
+
+#define TARGET_POSIX_IO
+
+#define LINK_GCC_C_SEQUENCE_SPEC \
+ "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
+
+/* Use --as-needed -lgcc_s for eh support. */
+#ifdef HAVE_LD_AS_NEEDED
+#define USE_LD_AS_NEEDED 1
+#endif
+
+/* NetBSD ppc64 has 128-bit long double support. */
+#undef RS6000_DEFAULT_LONG_DOUBLE_SIZE
+#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
+#define POWERPC_NETBSD
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