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282 |
jeremybenn |
/* Definitions of target machine for GNU compiler, for MIPS NetBSD systems.
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Copyright (C) 1993, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004,
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2007 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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* Define default target values. */
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#undef MACHINE_TYPE
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#if TARGET_ENDIAN_DEFAULT != 0
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#define MACHINE_TYPE "NetBSD/mipseb ELF"
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#else
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#define MACHINE_TYPE "NetBSD/mipsel ELF"
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#endif
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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NETBSD_OS_CPP_BUILTINS_ELF(); \
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builtin_define ("__NO_LEADING_UNDERSCORES__"); \
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builtin_define ("__GP_SUPPORT__"); \
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if (TARGET_LONG64) \
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builtin_define ("__LONG64"); \
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\
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if (TARGET_ABICALLS) \
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builtin_define ("__ABICALLS__"); \
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\
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if (mips_abi == ABI_EABI) \
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builtin_define ("__mips_eabi"); \
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else if (mips_abi == ABI_N32) \
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builtin_define ("__mips_n32"); \
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else if (mips_abi == ABI_64) \
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builtin_define ("__mips_n64"); \
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else if (mips_abi == ABI_O64) \
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builtin_define ("__mips_o64"); \
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} \
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while (0)
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/* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for NetBSD.
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Specifically, they define too many namespace-invasive macros. Override
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them here. Note this is structured for easy comparison to the version
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in mips.h.
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FIXME: This probably isn't the best solution. But in the absence
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of something better, it will have to do, for now. */
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#undef TARGET_CPU_CPP_BUILTINS
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#define TARGET_CPU_CPP_BUILTINS() \
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do \
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{ \
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builtin_assert ("cpu=mips"); \
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builtin_define ("__mips__"); \
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builtin_define ("_mips"); \
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\
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/* No _R3000 or _R4000. */ \
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if (TARGET_64BIT) \
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builtin_define ("__mips64"); \
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\
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if (TARGET_FLOAT64) \
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builtin_define ("__mips_fpr=64"); \
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else \
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builtin_define ("__mips_fpr=32"); \
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\
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if (TARGET_MIPS16) \
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builtin_define ("__mips16"); \
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\
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MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info); \
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MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info); \
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\
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if (ISA_MIPS1) \
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builtin_define ("__mips=1"); \
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else if (ISA_MIPS2) \
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builtin_define ("__mips=2"); \
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else if (ISA_MIPS3) \
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builtin_define ("__mips=3"); \
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else if (ISA_MIPS4) \
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builtin_define ("__mips=4"); \
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else if (ISA_MIPS32) \
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{ \
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builtin_define ("__mips=32"); \
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builtin_define ("__mips_isa_rev=1"); \
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} \
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else if (ISA_MIPS32R2) \
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{ \
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builtin_define ("__mips=32"); \
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builtin_define ("__mips_isa_rev=2"); \
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} \
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else if (ISA_MIPS64) \
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{ \
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builtin_define ("__mips=64"); \
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builtin_define ("__mips_isa_rev=1"); \
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} \
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\
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if (TARGET_HARD_FLOAT) \
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builtin_define ("__mips_hard_float"); \
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else if (TARGET_SOFT_FLOAT) \
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builtin_define ("__mips_soft_float"); \
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\
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if (TARGET_SINGLE_FLOAT) \
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builtin_define ("__mips_single_float"); \
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\
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if (TARGET_BIG_ENDIAN) \
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builtin_define ("__MIPSEB__"); \
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else \
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builtin_define ("__MIPSEL__"); \
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\
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/* No language dialect defines. */ \
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\
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/* ABIs handled in TARGET_OS_CPP_BUILTINS. */ \
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} \
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while (0)
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/* Clean up after the generic MIPS/ELF configuration. */
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#undef MD_EXEC_PREFIX
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#undef MD_STARTFILE_PREFIX
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/* Extra specs we need. */
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#undef SUBTARGET_EXTRA_SPECS
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#define SUBTARGET_EXTRA_SPECS \
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{ "netbsd_cpp_spec", NETBSD_CPP_SPEC }, \
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{ "netbsd_link_spec", NETBSD_LINK_SPEC_ELF }, \
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{ "netbsd_entry_point", NETBSD_ENTRY_POINT },
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/* Provide a SUBTARGET_CPP_SPEC appropriate for NetBSD. */
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#undef SUBTARGET_CPP_SPEC
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#define SUBTARGET_CPP_SPEC "%(netbsd_cpp_spec)"
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/* Provide a LINK_SPEC appropriate for a NetBSD/mips target.
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This is a copy of LINK_SPEC from <netbsd-elf.h> tweaked for
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the MIPS target. */
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#undef LINK_SPEC
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#define LINK_SPEC \
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"%{EL:-m elf32lmip} \
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%{EB:-m elf32bmip} \
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%(endian_spec) \
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%{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} %{mips64} \
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%{bestGnum} %{call_shared} %{no_archive} %{exact_version} \
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%(netbsd_link_spec)"
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#define NETBSD_ENTRY_POINT "__start"
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#undef SUBTARGET_ASM_SPEC
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#define SUBTARGET_ASM_SPEC \
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"%{!mno-abicalls: \
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%{!fno-PIC:%{!fno-pic:-KPIC}}}"
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/* -G is incompatible with -KPIC which is the default, so only allow objects
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in the small data section if the user explicitly asks for it. */
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#undef MIPS_DEFAULT_GVALUE
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#define MIPS_DEFAULT_GVALUE 0
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/* This defines which switch letters take arguments. -G is a MIPS
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special. */
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#undef SWITCH_TAKES_ARG
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#define SWITCH_TAKES_ARG(CHAR) \
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(DEFAULT_SWITCH_TAKES_ARG (CHAR) \
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|| (CHAR) == 'R' \
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|| (CHAR) == 'G')
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#undef ASM_FINAL_SPEC
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#undef SET_ASM_OP
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/* NetBSD hasn't historically provided _flush_cache(), but rather
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_cacheflush(), which takes the same arguments as the former. */
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#undef CACHE_FLUSH_FUNC
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#define CACHE_FLUSH_FUNC "_cacheflush"
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/* Make gcc agree with <machine/ansi.h> */
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 32
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#undef WINT_TYPE
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#define WINT_TYPE "int"
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