643 lines
21 KiB
C
643 lines
21 KiB
C
/* Definitions of target machine for GNU compiler,
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for 64 bit PowerPC linux.
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Copyright (C) 2000-2017 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef RS6000_BI_ARCH
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#undef TARGET_64BIT
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#define TARGET_64BIT 1
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#define DEFAULT_ARCH64_P 1
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#define RS6000_BI_ARCH_P 0
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#else
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#define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT)
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#define RS6000_BI_ARCH_P 1
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#endif
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#ifdef IN_LIBGCC2
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#undef TARGET_64BIT
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#ifdef __powerpc64__
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#define TARGET_64BIT 1
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#else
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#define TARGET_64BIT 0
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#endif
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#endif
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#undef TARGET_AIX
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#define TARGET_AIX TARGET_64BIT
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#ifdef HAVE_LD_NO_DOT_SYMS
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/* New ABI uses a local sym for the function entry point. */
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extern int dot_symbols;
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#undef DOT_SYMBOLS
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#define DOT_SYMBOLS dot_symbols
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#endif
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#define TARGET_PROFILE_KERNEL profile_kernel
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#undef TARGET_KEEP_LEAF_WHEN_PROFILED
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#define TARGET_KEEP_LEAF_WHEN_PROFILED rs6000_keep_leaf_when_profiled
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#define TARGET_USES_LINUX64_OPT 1
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#ifdef HAVE_LD_LARGE_TOC
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#undef TARGET_CMODEL
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#define TARGET_CMODEL rs6000_current_cmodel
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#define SET_CMODEL(opt) rs6000_current_cmodel = opt
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#else
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#define SET_CMODEL(opt) do {} while (0)
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#endif
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#undef PROCESSOR_DEFAULT
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#define PROCESSOR_DEFAULT PROCESSOR_POWER7
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#undef PROCESSOR_DEFAULT64
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#define PROCESSOR_DEFAULT64 PROCESSOR_POWER8
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/* We don't need to generate entries in .fixup, except when
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-mrelocatable or -mrelocatable-lib is given. */
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#undef RELOCATABLE_NEEDS_FIXUP
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#define RELOCATABLE_NEEDS_FIXUP \
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(rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE)
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#undef RS6000_ABI_NAME
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#define RS6000_ABI_NAME "linux"
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#define INVALID_64BIT "-m%s not supported in this configuration"
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#define INVALID_32BIT INVALID_64BIT
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#ifdef LINUX64_DEFAULT_ABI_ELFv2
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#define ELFv2_ABI_CHECK (rs6000_elf_abi != 1)
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#else
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#define ELFv2_ABI_CHECK (rs6000_elf_abi == 2)
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#endif
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#undef SUBSUBTARGET_OVERRIDE_OPTIONS
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#define SUBSUBTARGET_OVERRIDE_OPTIONS \
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do \
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{ \
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if (!global_options_set.x_rs6000_alignment_flags) \
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rs6000_alignment_flags = MASK_ALIGN_NATURAL; \
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if (rs6000_isa_flags & OPTION_MASK_64BIT) \
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{ \
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if (DEFAULT_ABI != ABI_AIX) \
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{ \
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rs6000_current_abi = ABI_AIX; \
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error (INVALID_64BIT, "call"); \
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} \
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dot_symbols = !strcmp (rs6000_abi_name, "aixdesc"); \
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if (ELFv2_ABI_CHECK) \
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{ \
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rs6000_current_abi = ABI_ELFv2; \
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if (dot_symbols) \
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error ("-mcall-aixdesc incompatible with -mabi=elfv2"); \
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} \
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if (rs6000_isa_flags & OPTION_MASK_RELOCATABLE) \
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{ \
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rs6000_isa_flags &= ~OPTION_MASK_RELOCATABLE; \
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error (INVALID_64BIT, "relocatable"); \
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} \
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if (rs6000_isa_flags & OPTION_MASK_EABI) \
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{ \
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rs6000_isa_flags &= ~OPTION_MASK_EABI; \
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error (INVALID_64BIT, "eabi"); \
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} \
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if (TARGET_PROTOTYPE) \
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{ \
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target_prototype = 0; \
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error (INVALID_64BIT, "prototype"); \
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} \
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if ((rs6000_isa_flags & OPTION_MASK_POWERPC64) == 0) \
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{ \
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rs6000_isa_flags |= OPTION_MASK_POWERPC64; \
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error ("-m64 requires a PowerPC64 cpu"); \
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} \
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if ((rs6000_isa_flags_explicit \
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& OPTION_MASK_MINIMAL_TOC) != 0) \
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{ \
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if (global_options_set.x_rs6000_current_cmodel \
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&& rs6000_current_cmodel != CMODEL_SMALL) \
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error ("-mcmodel incompatible with other toc options"); \
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SET_CMODEL (CMODEL_SMALL); \
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} \
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else \
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{ \
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if (!global_options_set.x_rs6000_current_cmodel) \
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SET_CMODEL (CMODEL_MEDIUM); \
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if (rs6000_current_cmodel != CMODEL_SMALL) \
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{ \
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if (!global_options_set.x_TARGET_NO_FP_IN_TOC) \
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TARGET_NO_FP_IN_TOC \
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= rs6000_current_cmodel == CMODEL_MEDIUM; \
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if (!global_options_set.x_TARGET_NO_SUM_IN_TOC) \
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TARGET_NO_SUM_IN_TOC = 0; \
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} \
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} \
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} \
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else \
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{ \
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if (!RS6000_BI_ARCH_P) \
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error (INVALID_32BIT, "32"); \
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if (TARGET_PROFILE_KERNEL) \
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{ \
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TARGET_PROFILE_KERNEL = 0; \
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error (INVALID_32BIT, "profile-kernel"); \
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} \
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if (global_options_set.x_rs6000_current_cmodel) \
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{ \
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SET_CMODEL (CMODEL_SMALL); \
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error (INVALID_32BIT, "cmodel"); \
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} \
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} \
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} \
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while (0)
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#undef ASM_DEFAULT_SPEC
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#undef ASM_SPEC
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#undef LINK_OS_LINUX_SPEC
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#undef LINK_SECURE_PLT_SPEC
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#ifndef RS6000_BI_ARCH
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#define ASM_DEFAULT_SPEC "-mppc64"
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#define ASM_SPEC "%(asm_spec64) %(asm_spec_common)"
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#define LINK_OS_LINUX_SPEC "%(link_os_linux_spec64)"
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#define LINK_SECURE_PLT_SPEC ""
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#else
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#if DEFAULT_ARCH64_P
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#define ASM_DEFAULT_SPEC "-mppc%{!m32:64}"
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#define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)"
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#define LINK_OS_LINUX_SPEC "%{m32:%(link_os_linux_spec32)}%{!m32:%(link_os_linux_spec64)}"
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#define LINK_SECURE_PLT_SPEC "%{m32: " LINK_SECURE_PLT_DEFAULT_SPEC "}"
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#else
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#define ASM_DEFAULT_SPEC "-mppc%{m64:64}"
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#define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"
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#define LINK_OS_LINUX_SPEC "%{!m64:%(link_os_linux_spec32)}%{m64:%(link_os_linux_spec64)}"
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#define LINK_SECURE_PLT_SPEC "%{!m64: " LINK_SECURE_PLT_DEFAULT_SPEC "}"
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#endif
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#endif
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#define ASM_SPEC32 "-a32 \
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%{mrelocatable} %{mrelocatable-lib} %{" FPIE_OR_FPIC_SPEC ":-K PIC} \
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%{memb|msdata=eabi: -memb}"
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#define ASM_SPEC64 "-a64"
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#define ASM_SPEC_COMMON "%(asm_cpu) \
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%{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}" \
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ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN)
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#undef SUBSUBTARGET_EXTRA_SPECS
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#define SUBSUBTARGET_EXTRA_SPECS \
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{ "asm_spec_common", ASM_SPEC_COMMON }, \
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{ "asm_spec32", ASM_SPEC32 }, \
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{ "asm_spec64", ASM_SPEC64 }, \
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{ "link_os_linux_spec32", LINK_OS_LINUX_SPEC32 }, \
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{ "link_os_linux_spec64", LINK_OS_LINUX_SPEC64 }, \
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{ "link_os_extra_spec32", LINK_OS_EXTRA_SPEC32 }, \
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{ "link_os_extra_spec64", LINK_OS_EXTRA_SPEC64 }, \
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{ "link_os_new_dtags", LINK_OS_NEW_DTAGS_SPEC }, \
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{ "include_extra", INCLUDE_EXTRA_SPEC }, \
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{ "dynamic_linker_prefix", DYNAMIC_LINKER_PREFIX },
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/* Optional specs used for overriding the system include directory, default
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-rpath links, and prefix for the dynamic linker. Normally, there are not
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defined, but if the user configure with the --with-advance-toolchain=<xxx>
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option, the advance-toolchain.h file will override these. */
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#ifndef INCLUDE_EXTRA_SPEC
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#define INCLUDE_EXTRA_SPEC ""
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#endif
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#ifndef LINK_OS_EXTRA_SPEC32
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#define LINK_OS_EXTRA_SPEC32 ""
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#endif
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#ifndef LINK_OS_EXTRA_SPEC64
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#define LINK_OS_EXTRA_SPEC64 ""
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#endif
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#ifndef LINK_OS_NEW_DTAGS_SPEC
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#define LINK_OS_NEW_DTAGS_SPEC ""
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#endif
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#ifndef DYNAMIC_LINKER_PREFIX
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#define DYNAMIC_LINKER_PREFIX ""
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#endif
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#undef MULTILIB_DEFAULTS
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#if DEFAULT_ARCH64_P
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#define MULTILIB_DEFAULTS { "m64" }
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#else
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#define MULTILIB_DEFAULTS { "m32" }
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#endif
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/* Split stack is only supported for 64 bit, and requires glibc >= 2.18. */
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#if TARGET_GLIBC_MAJOR * 1000 + TARGET_GLIBC_MINOR >= 2018
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# ifndef RS6000_BI_ARCH
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# define TARGET_CAN_SPLIT_STACK
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# else
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# if DEFAULT_ARCH64_P
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/* Supported, and the default is -m64 */
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# define TARGET_CAN_SPLIT_STACK_64BIT 1
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# else
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/* Supported, and the default is -m32 */
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# define TARGET_CAN_SPLIT_STACK_64BIT 0
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# endif
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# endif
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#endif
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#ifndef RS6000_BI_ARCH
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/* 64-bit PowerPC Linux always has a TOC. */
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#undef TARGET_TOC
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#define TARGET_TOC 1
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/* Some things from sysv4.h we don't do when 64 bit. */
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#undef OPTION_RELOCATABLE
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#define OPTION_RELOCATABLE 0
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#undef OPTION_EABI
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#define OPTION_EABI 0
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#undef OPTION_PROTOTYPE
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#define OPTION_PROTOTYPE 0
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#undef RELOCATABLE_NEEDS_FIXUP
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#define RELOCATABLE_NEEDS_FIXUP 0
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#endif
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/* We use glibc _mcount for profiling. */
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#define NO_PROFILE_COUNTERS 1
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#define PROFILE_HOOK(LABEL) \
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do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0)
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/* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */
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#undef ADJUST_FIELD_ALIGN
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#define ADJUST_FIELD_ALIGN(FIELD, TYPE, COMPUTED) \
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(rs6000_special_adjust_field_align_p ((TYPE), (COMPUTED)) \
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? 128 \
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: (TARGET_64BIT \
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&& TARGET_ALIGN_NATURAL == 0 \
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&& TYPE_MODE (strip_array_types (TYPE)) == DFmode) \
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? MIN ((COMPUTED), 32) \
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: (COMPUTED))
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/* PowerPC64 Linux increases natural record alignment to doubleword if
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the first field is an FP double, only if in power alignment mode. */
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#undef ROUND_TYPE_ALIGN
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#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
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((TARGET_64BIT \
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&& (TREE_CODE (STRUCT) == RECORD_TYPE \
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|| TREE_CODE (STRUCT) == UNION_TYPE \
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|| TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
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&& TARGET_ALIGN_NATURAL == 0) \
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? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \
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: MAX ((COMPUTED), (SPECIFIED)))
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/* Use the default for compiling target libs. */
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#ifdef IN_TARGET_LIBS
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#undef TARGET_ALIGN_NATURAL
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#define TARGET_ALIGN_NATURAL 1
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#endif
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/* Indicate that jump tables go in the text section. */
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#undef JUMP_TABLES_IN_TEXT_SECTION
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#define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT
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/* The linux ppc64 ABI isn't explicit on whether aggregates smaller
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than a doubleword should be padded upward or downward. You could
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reasonably assume that they follow the normal rules for structure
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layout treating the parameter area as any other block of memory,
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then map the reg param area to registers. i.e. pad upward.
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Setting both of the following defines results in this behavior.
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Setting just the first one will result in aggregates that fit in a
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doubleword being padded downward, and others being padded upward.
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Not a bad idea as this results in struct { int x; } being passed
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the same way as an int. */
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#define AGGREGATE_PADDING_FIXED TARGET_64BIT
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#define AGGREGATES_PAD_UPWARD_ALWAYS 0
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/* Specify padding for the last element of a block move between
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registers and memory. FIRST is nonzero if this is the only
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element. */
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#define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
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(!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE))
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/* Linux doesn't support saving and restoring 64-bit regs in a 32-bit
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process. */
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#define OS_MISSING_POWERPC64 !TARGET_64BIT
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#ifdef SINGLE_LIBC
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#define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
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#define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
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#define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
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#undef OPTION_MUSL
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#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
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#else
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#define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
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#define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
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#define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
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#undef OPTION_MUSL
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#define OPTION_MUSL (linux_libc == LIBC_MUSL)
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#endif
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/* Determine what functions are present at the runtime;
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this includes full c99 runtime and sincos. */
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#undef TARGET_LIBC_HAS_FUNCTION
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#define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function
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#undef TARGET_OS_CPP_BUILTINS
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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if (TARGET_64BIT) \
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{ \
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builtin_define ("__PPC__"); \
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builtin_define ("__PPC64__"); \
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builtin_define ("__powerpc__"); \
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builtin_define ("__powerpc64__"); \
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if (!DOT_SYMBOLS) \
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builtin_define ("_CALL_LINUX"); \
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builtin_assert ("cpu=powerpc64"); \
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builtin_assert ("machine=powerpc64"); \
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} \
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else \
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{ \
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builtin_define_std ("PPC"); \
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builtin_define_std ("powerpc"); \
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builtin_assert ("cpu=powerpc"); \
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builtin_assert ("machine=powerpc"); \
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TARGET_OS_SYSV_CPP_BUILTINS (); \
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} \
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} \
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while (0)
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#undef CPP_OS_DEFAULT_SPEC
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#define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux) %(include_extra)"
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#undef LINK_SHLIB_SPEC
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#define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
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#undef LIB_DEFAULT_SPEC
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#define LIB_DEFAULT_SPEC "%(lib_linux)"
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#undef STARTFILE_DEFAULT_SPEC
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#define STARTFILE_DEFAULT_SPEC "%(startfile_linux)"
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#undef ENDFILE_DEFAULT_SPEC
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#define ENDFILE_DEFAULT_SPEC "%(endfile_linux)"
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#undef LINK_START_DEFAULT_SPEC
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#define LINK_START_DEFAULT_SPEC "%(link_start_linux)"
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#undef LINK_OS_DEFAULT_SPEC
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#define LINK_OS_DEFAULT_SPEC "%(link_os_linux)"
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#define GLIBC_DYNAMIC_LINKER32 "%(dynamic_linker_prefix)/lib/ld.so.1"
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#ifdef LINUX64_DEFAULT_ABI_ELFv2
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#define GLIBC_DYNAMIC_LINKER64 \
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"%{mabi=elfv1:%(dynamic_linker_prefix)/lib64/ld64.so.1;" \
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":%(dynamic_linker_prefix)/lib64/ld64.so.2}"
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#else
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#define GLIBC_DYNAMIC_LINKER64 \
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"%{mabi=elfv2:%(dynamic_linker_prefix)/lib64/ld64.so.2;" \
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":%(dynamic_linker_prefix)/lib64/ld64.so.1}"
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#endif
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#define MUSL_DYNAMIC_LINKER32 \
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"/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
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#define MUSL_DYNAMIC_LINKER64 \
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"/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
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#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
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#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
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#if DEFAULT_LIBC == LIBC_UCLIBC
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#define CHOOSE_DYNAMIC_LINKER(G, U, M) \
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"%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
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#elif DEFAULT_LIBC == LIBC_GLIBC
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#define CHOOSE_DYNAMIC_LINKER(G, U, M) \
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"%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
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#elif DEFAULT_LIBC == LIBC_MUSL
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#define CHOOSE_DYNAMIC_LINKER(G, U, M) \
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"%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
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#else
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#error "Unsupported DEFAULT_LIBC"
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#endif
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#define GNU_USER_DYNAMIC_LINKER32 \
|
|
CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
|
|
MUSL_DYNAMIC_LINKER32)
|
|
#define GNU_USER_DYNAMIC_LINKER64 \
|
|
CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
|
|
MUSL_DYNAMIC_LINKER64)
|
|
|
|
#undef DEFAULT_ASM_ENDIAN
|
|
#if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
|
|
#define DEFAULT_ASM_ENDIAN " -mlittle"
|
|
#define LINK_OS_LINUX_EMUL32 ENDIAN_SELECT(" -m elf32ppclinux", \
|
|
" -m elf32lppclinux", \
|
|
" -m elf32lppclinux")
|
|
#define LINK_OS_LINUX_EMUL64 ENDIAN_SELECT(" -m elf64ppc", \
|
|
" -m elf64lppc", \
|
|
" -m elf64lppc")
|
|
#else
|
|
#define DEFAULT_ASM_ENDIAN " -mbig"
|
|
#define LINK_OS_LINUX_EMUL32 ENDIAN_SELECT(" -m elf32ppclinux", \
|
|
" -m elf32lppclinux", \
|
|
" -m elf32ppclinux")
|
|
#define LINK_OS_LINUX_EMUL64 ENDIAN_SELECT(" -m elf64ppc", \
|
|
" -m elf64lppc", \
|
|
" -m elf64ppc")
|
|
#endif
|
|
|
|
#define LINK_OS_LINUX_SPEC32 LINK_OS_LINUX_EMUL32 " %{!shared: %{!static: \
|
|
%{rdynamic:-export-dynamic} \
|
|
-dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "}} \
|
|
%(link_os_extra_spec32)"
|
|
|
|
#define LINK_OS_LINUX_SPEC64 LINK_OS_LINUX_EMUL64 " %{!shared: %{!static: \
|
|
%{rdynamic:-export-dynamic} \
|
|
-dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "}} \
|
|
%(link_os_extra_spec64)"
|
|
|
|
#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\""))
|
|
|
|
/* Must be at least as big as our pointer type. */
|
|
#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
|
|
|
|
#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 ""
|
|
#undef RESTORE_FP_PREFIX
|
|
#define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_")
|
|
#undef RESTORE_FP_SUFFIX
|
|
#define RESTORE_FP_SUFFIX ""
|
|
|
|
/* 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 \
|
|
&& SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
|
|
&& BITS_PER_WORD == HOST_BITS_PER_INT)))))
|
|
|
|
/* 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)
|
|
|
|
/* 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)
|
|
|
|
#ifdef TARGET_LIBC_PROVIDES_SSP
|
|
/* ppc32 glibc provides __stack_chk_guard in -0x7008(2),
|
|
ppc64 glibc provides it at -0x7010(13). */
|
|
#define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? -0x7010 : -0x7008)
|
|
#endif
|
|
|
|
#define POWERPC_LINUX
|
|
|
|
/* ppc{32,64} linux has 128-bit long double support in glibc 2.4 and later. */
|
|
#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
|
|
#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
|
|
#endif
|
|
|
|
/* 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)
|
|
|
|
/* Software floating point support for exceptions and rounding modes
|
|
depends on the C library in use. */
|
|
#undef TARGET_FLOAT_EXCEPTIONS_ROUNDING_SUPPORTED_P
|
|
#define TARGET_FLOAT_EXCEPTIONS_ROUNDING_SUPPORTED_P \
|
|
rs6000_linux_float_exceptions_rounding_supported_p
|
|
|
|
/* Support for TARGET_ATOMIC_ASSIGN_EXPAND_FENV without FPRs depends
|
|
on glibc 2.19 or greater. */
|
|
#if TARGET_GLIBC_MAJOR > 2 \
|
|
|| (TARGET_GLIBC_MAJOR == 2 && TARGET_GLIBC_MINOR >= 19)
|
|
#define RS6000_GLIBC_ATOMIC_FENV 1
|
|
#endif
|
|
|
|
/* The IEEE 128-bit emulator is only built on Linux systems. Flag that we
|
|
should enable the type handling for KFmode on VSX systems even if we are not
|
|
enabling the __float128 keyword. */
|
|
#undef TARGET_FLOAT128_ENABLE_TYPE
|
|
#define TARGET_FLOAT128_ENABLE_TYPE 1
|