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jeremybenn |
/* Definitions of target machine for GNU compiler. IRIX version 6.
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Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004,
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2005, 2006, 2007, 2008, 2010
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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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/* Allow some special handling for IRIX 6. */
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#undef TARGET_IRIX6
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#define TARGET_IRIX6 1
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/* Default to -mabi=n32 and -mips3. */
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#undef MULTILIB_DEFAULTS
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#define MULTILIB_DEFAULTS { "mabi=n32" }
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/* Force the default ABI onto the command line in order to make the specs
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easier to write. Default to the mips2 ISA for the O32 ABI. */
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#undef DRIVER_SELF_SPECS
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#define DRIVER_SELF_SPECS \
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"%{!mabi=*: -mabi=n32}", \
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"%{mabi=32: %{!mips*: %{!march*: -mips2}}}", \
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/* Configuration-independent MIPS rules. */ \
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BASE_DRIVER_SELF_SPECS
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/* Force the generation of dwarf .debug_frame sections even if not
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compiling -g. This guarantees that we can unwind the stack. */
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#define DWARF2_FRAME_INFO 1
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/* The system unwinder in libexc requires a specific dwarf return address
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column to work. */
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#undef DWARF_FRAME_RETURN_COLUMN
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#define DWARF_FRAME_RETURN_COLUMN (FP_REG_LAST + 1)
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#undef MACHINE_TYPE
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#define MACHINE_TYPE "SGI running IRIX 6.x"
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#ifdef IRIX_USING_GNU_LD
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#define IRIX_SUBTARGET_LINK_SPEC \
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"%{mabi=32: -melf32bsmip}%{mabi=n32: -melf32bmipn32}%{mabi=64: -melf64bmip}"
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#else
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/* Explicitly hide crt symbols that would normally be marked with
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a "hidden" visibility attribute.
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We have traditionally disabled this attribute when using the
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native linker because the native linker's visibility support is
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not fully-compatible with the GNU linker's. In particular, the
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native linker does not pull in archive objects purely to resolve
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references to the object's hidden symbols, whereas the GNU
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linker does.
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The gcc build system currently hides symbols in some static
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libraries (typically libgcov.a or libgcc.a) whenever visibility
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attributes are supported. On targets with GNU semantics, this
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makes sure that uses of libx.so symbols in one dynamic object are
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not resolved to libx.a symbols in another dynamic object. But
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on targets with IRIX semantics, hiding the symbols prevents the
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static archive from working at all.
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It would probably be better to enable visiblity attributes for
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IRIX ld and disable the static archives versioning. It shouldn't
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make anything worse, since libx.a symbols are global by default
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anyway. However, no-one has volunteered to do this yet. */
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#define IRIX_SUBTARGET_LINK_SPEC \
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"%{w} -_SYSTYPE_SVR4 -woff 131 \
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%{shared:-hidden_symbol __dso_handle} \
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%{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"
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#endif
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/* Profiling is supported via libprof1.a not -lc_p as in IRIX 3. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC \
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"%{!shared: \
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%{mabi=32:%{pg:gcrt1.o%s} \
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%{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
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%{mabi=n32: \
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%{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
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%{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
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%{!p:/usr/lib32/mips4/crt1.o%s}}} \
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%{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
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%{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
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%{!p:/usr/lib32/mips3/crt1.o%s}}}} \
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%{mabi=64: \
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%{mips4:%{pg:/usr/lib64/mips4/gcrt1.o} \
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%{!pg:%{p:/usr/lib64/mips4/mcrt1.o /usr/lib64/mips4/libprof1.a} \
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%{!p:/usr/lib64/mips4/crt1.o}}} \
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%{!mips4:%{pg:/usr/lib64/mips3/gcrt1.o} \
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%{!pg:%{p:/usr/lib64/mips3/mcrt1.o /usr/lib64/mips3/libprof1.a} \
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%{!p:/usr/lib64/mips3/crt1.o}}}}} \
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irix-crti.o%s crtbegin.o%s"
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{mabi=n32: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
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-L/usr/lib32} \
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%{mabi=64: %{mips4:-L/usr/lib64/mips4} %{!mips4:-L/usr/lib64/mips3} \
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-L/usr/lib64} \
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%{!shared:" \
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SUBTARGET_DONT_WARN_UNUSED_SPEC \
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" %{pthread:-lpthread} %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc " \
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SUBTARGET_WARN_UNUSED_SPEC "}"
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/* Avoid getting two warnings for libgcc.a everytime we link. libgcc.a
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contains references to copysignl, so link with libm to resolve them. */
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#undef LIBGCC_SPEC
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#define LIBGCC_SPEC \
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SUBTARGET_DONT_WARN_UNUSED_SPEC " -lgcc -lm " SUBTARGET_WARN_UNUSED_SPEC
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC \
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"crtend.o%s irix-crtn.o%s \
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%{!shared: \
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%{mabi=32:crtn.o%s}\
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%{mabi=n32:%{mips4:/usr/lib32/mips4/crtn.o%s}\
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%{!mips4:/usr/lib32/mips3/crtn.o%s}}\
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%{mabi=64:%{mips4:/usr/lib64/mips4/crtn.o%s}\
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%{!mips4:/usr/lib64/mips3/crtn.o%s}}}"
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#define MIPS_TFMODE_FORMAT mips_extended_format
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#undef SUBTARGET_CPP_SPEC
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#define SUBTARGET_CPP_SPEC "%{pthread:-D_REENTRANT}"
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