| /* Definitions for 64-bit PowerPC running FreeBSD using the ELF format |
| Copyright (C) 2012-2021 Free Software Foundation, Inc. |
| |
| 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 3, 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 COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* Undef gnu-user.h macros we don't want. */ |
| #undef CPLUSPLUS_CPP_SPEC |
| #undef LINK_GCC_C_SEQUENCE_SPEC |
| |
| /* Override the defaults, which exist to force the proper definition. */ |
| |
| #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_USES_LINUX64_OPT 1 |
| #ifdef HAVE_LD_LARGE_TOC |
| #undef TARGET_CMODEL |
| #define TARGET_CMODEL rs6000_current_cmodel |
| #define SET_CMODEL(opt) rs6000_current_cmodel = opt |
| #else |
| #define SET_CMODEL(opt) do {} while (0) |
| #endif |
| |
| #undef PROCESSOR_DEFAULT |
| #define PROCESSOR_DEFAULT PROCESSOR_PPC7450 |
| #undef PROCESSOR_DEFAULT64 |
| #define PROCESSOR_DEFAULT64 PROCESSOR_POWER8 |
| |
| /* 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 \ |
| (rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE) |
| |
| #undef RS6000_ABI_NAME |
| #define RS6000_ABI_NAME "freebsd" |
| |
| #define INVALID_64BIT "-m%s not supported in this configuration" |
| #define INVALID_32BIT INVALID_64BIT |
| |
| /* Use LINUX64 instead of FREEBSD64 for compat with e.g. sysv4le.h */ |
| #ifdef LINUX64_DEFAULT_ABI_ELFv2 |
| #define ELFv2_ABI_CHECK (rs6000_elf_abi != 1) |
| #else |
| #define ELFv2_ABI_CHECK (rs6000_elf_abi == 2) |
| #endif |
| |
| #undef SUBSUBTARGET_OVERRIDE_OPTIONS |
| #define SUBSUBTARGET_OVERRIDE_OPTIONS \ |
| do rs6000_linux64_override_options (); while (0) |
| |
| #undef ASM_SPEC |
| #undef LINK_OS_FREEBSD_SPEC |
| |
| #define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)" |
| #define LINK_OS_FREEBSD_SPEC "%{m32:%(link_os_freebsd_spec32)}%{!m32:%(link_os_freebsd_spec64)}" |
| |
| #define ASM_SPEC32 "-a32 \ |
| %{mrelocatable} %{mrelocatable-lib} %{" FPIE_OR_FPIC_SPEC ":-K PIC} \ |
| %{memb} %{!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) \ |
| %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}" \ |
| ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_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_freebsd_spec32", LINK_OS_FREEBSD_SPEC32 }, \ |
| { "link_os_freebsd_spec64", LINK_OS_FREEBSD_SPEC64 }, |
| |
| #define LINK_OS_FREEBSD_SPEC_DEF "\ |
| %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \ |
| %{v:-V} \ |
| %{assert*} %{R*} %{rpath*} %{defsym*} \ |
| %{shared:-Bshareable %{h*} %{soname*}} \ |
| %{!shared: \ |
| %{!static: \ |
| %{rdynamic: -export-dynamic} \ |
| %{!dynamic-linker:-dynamic-linker " FBSD_DYNAMIC_LINKER "}} \ |
| %{static:-Bstatic}} \ |
| %{symbolic:-Bsymbolic}" |
| |
| #undef DEFAULT_ASM_ENDIAN |
| #define LINK_OS_FREEBSD_SPEC32 "-melf32ppc_fbsd " LINK_OS_FREEBSD_SPEC_DEF |
| #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN) |
| #define DEFAULT_ASM_ENDIAN " -mlittle" |
| #define LINK_OS_FREEBSD_SPEC64 "-melf64lppc_fbsd " LINK_OS_FREEBSD_SPEC_DEF |
| #else |
| #define DEFAULT_ASM_ENDIAN " -mbig" |
| #define LINK_OS_FREEBSD_SPEC64 "-melf64ppc_fbsd " LINK_OS_FREEBSD_SPEC_DEF |
| #endif |
| |
| #undef MULTILIB_DEFAULTS |
| #define MULTILIB_DEFAULTS { "m64" } |
| |
| /* PowerPC-64 FreeBSD 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) ? PAD_UPWARD : targetm.calls.function_arg_padding (MODE, TYPE)) |
| |
| /* FreeBSD doesn't support saving and restoring 64-bit regs with a 32-bit |
| kernel. This is supported when running on a 64-bit kernel with |
| COMPAT_FREEBSD32, but tell GCC it isn't so that our 32-bit binaries |
| are compatible. */ |
| #define OS_MISSING_POWERPC64 !TARGET_64BIT |
| |
| #undef FBSD_TARGET_CPU_CPP_BUILTINS |
| #define FBSD_TARGET_CPU_CPP_BUILTINS() \ |
| do \ |
| { \ |
| builtin_define ("__PPC__"); \ |
| builtin_define ("__ppc__"); \ |
| builtin_define ("__powerpc__"); \ |
| if (TARGET_64BIT) \ |
| { \ |
| builtin_define ("__arch64__"); \ |
| builtin_define ("__LP64__"); \ |
| builtin_define ("__PPC64__"); \ |
| builtin_define ("__powerpc64__"); \ |
| 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) |
| |
| #undef CPP_OS_DEFAULT_SPEC |
| #define CPP_OS_DEFAULT_SPEC "%(cpp_os_freebsd)" |
| |
| #undef CPP_OS_FREEBSD_SPEC |
| #define CPP_OS_FREEBSD_SPEC "" |
| |
| #undef STARTFILE_DEFAULT_SPEC |
| #define STARTFILE_DEFAULT_SPEC "%(startfile_freebsd)" |
| |
| #undef ENDFILE_DEFAULT_SPEC |
| #define ENDFILE_DEFAULT_SPEC "%(endfile_freebsd)" |
| |
| #undef LIB_DEFAULT_SPEC |
| #define LIB_DEFAULT_SPEC "%(lib_freebsd)" |
| |
| #undef LINK_START_DEFAULT_SPEC |
| #define LINK_START_DEFAULT_SPEC "%(link_start_freebsd)" |
| |
| #undef LINK_OS_DEFAULT_SPEC |
| #define LINK_OS_DEFAULT_SPEC "%(link_os_freebsd)" |
| |
| /* XXX: This is wrong for many platforms in sysv4.h. |
| We should work on getting that definition fixed. */ |
| #undef LINK_SHLIB_SPEC |
| #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}" |
| |
| |
| /************************[ Target stuff ]***********************************/ |
| |
| /* Define the actual types of some ANSI-mandated types. |
| Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c, |
| c-common.c, and config/<arch>/<arch>.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") |
| |
| /* rs6000.h gets this wrong for FreeBSD. We use the GCC defaults instead. */ |
| #undef WCHAR_TYPE |
| |
| #undef WCHAR_TYPE_SIZE |
| #define WCHAR_TYPE_SIZE 32 |
| |
| /* Function profiling bits */ |
| #undef RS6000_MCOUNT |
| #define RS6000_MCOUNT "_mcount" |
| |
| #define PROFILE_HOOK(LABEL) \ |
| do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0) |
| |
| /* _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. */ |
| #ifdef __powerpc64__ |
| #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ |
| asm (SECTION_OP "\n" \ |
| " bl " #FUNC "\n" \ |
| " nop\n" \ |
| " .previous"); |
| #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 "" |
| #undef RESTORE_FP_PREFIX |
| #define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_") |
| #undef RESTORE_FP_SUFFIX |
| #define RESTORE_FP_SUFFIX "" |
| |
| /* 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 \ |
| ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \ |
| | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \ |
| : DW_EH_PE_absptr) |
| |
| /* Static stack checking is supported by means of probes. */ |
| #define STACK_CHECK_STATIC_BUILTIN 1 |
| |
| /* The default value isn't sufficient in 64-bit mode. */ |
| #define STACK_CHECK_PROTECT (TARGET_64BIT ? 16 * 1024 : 12 * 1024) |
| |
| /* Use standard DWARF numbering for DWARF debugging information. */ |
| #define RS6000_USE_DWARF_NUMBERING |
| |
| /* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */ |
| #undef ADJUST_FIELD_ALIGN |
| #define ADJUST_FIELD_ALIGN(FIELD, TYPE, COMPUTED) \ |
| ((TARGET_64BIT \ |
| && TARGET_ALIGN_NATURAL == 0 \ |
| && TYPE_MODE (strip_array_types (TYPE)) == DFmode) \ |
| ? MIN ((COMPUTED), 32) \ |
| : (COMPUTED)) |
| |
| #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\"" \ |
| : (flag_pic \ |
| ? "\t.section\t\".got2\",\"aw\"" \ |
| : "\t.section\t\".got1\",\"aw\"")) |
| |
| /* 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) |
| |
| #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P |
| #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \ |
| (TARGET_TOC \ |
| && (SYMBOL_REF_P (X) \ |
| || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \ |
| && SYMBOL_REF_P (XEXP (XEXP (X, 0), 0))) \ |
| || GET_CODE (X) == LABEL_REF \ |
| || (CONST_INT_P (X) \ |
| && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \ |
| || (CONST_DOUBLE_P (X) \ |
| && ((TARGET_64BIT \ |
| && (TARGET_MINIMAL_TOC \ |
| || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \ |
| && ! TARGET_NO_FP_IN_TOC))) \ |
| || (!TARGET_64BIT \ |
| && !TARGET_NO_FP_IN_TOC \ |
| && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \ |
| && BITS_PER_WORD == HOST_BITS_PER_INT))))) |
| |
| /* Use --as-needed -lgcc_s for eh support. */ |
| #ifdef HAVE_LD_AS_NEEDED |
| #define USE_LD_AS_NEEDED 1 |
| #endif |
| |
| #define POWERPC_FREEBSD |
