/* Definitions of target machine for GNU compiler, for DEC Alpha on OSF/1.
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/* Definitions of target machine for GNU compiler, for DEC Alpha on OSF/1.
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Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2001, 2002, 2003,
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Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2001, 2002, 2003,
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2004, 2007 Free Software Foundation, Inc.
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2004, 2007 Free Software Foundation, Inc.
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Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
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Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
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This file is part of GCC.
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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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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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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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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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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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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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/* As of OSF 4.0, as can subtract adjacent labels. */
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/* As of OSF 4.0, as can subtract adjacent labels. */
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#undef TARGET_AS_CAN_SUBTRACT_LABELS
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#undef TARGET_AS_CAN_SUBTRACT_LABELS
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#define TARGET_AS_CAN_SUBTRACT_LABELS 1
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#define TARGET_AS_CAN_SUBTRACT_LABELS 1
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/* The GEM libraries for X_float are present, though not used by C. */
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/* The GEM libraries for X_float are present, though not used by C. */
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#undef TARGET_HAS_XFLOATING_LIBS
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#undef TARGET_HAS_XFLOATING_LIBS
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#define TARGET_HAS_XFLOATING_LIBS 1
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#define TARGET_HAS_XFLOATING_LIBS 1
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/* Names to predefine in the preprocessor for this target machine. */
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/* Names to predefine in the preprocessor for this target machine. */
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#define TARGET_OS_CPP_BUILTINS() \
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#define TARGET_OS_CPP_BUILTINS() \
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do { \
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do { \
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builtin_define_std ("unix"); \
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builtin_define_std ("unix"); \
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builtin_define_std ("SYSTYPE_BSD"); \
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builtin_define_std ("SYSTYPE_BSD"); \
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builtin_define ("_SYSTYPE_BSD"); \
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builtin_define ("_SYSTYPE_BSD"); \
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builtin_define ("__osf__"); \
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builtin_define ("__osf__"); \
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builtin_define ("__digital__"); \
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builtin_define ("__digital__"); \
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builtin_define ("__arch64__"); \
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builtin_define ("__arch64__"); \
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builtin_define ("_LONGLONG"); \
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builtin_define ("_LONGLONG"); \
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builtin_assert ("system=unix"); \
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builtin_assert ("system=unix"); \
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builtin_assert ("system=xpg4"); \
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builtin_assert ("system=xpg4"); \
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/* Tru64 UNIX V5 has a 16 byte long \
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/* Tru64 UNIX V5 has a 16 byte long \
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double type and requires __X_FLOAT \
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double type and requires __X_FLOAT \
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to be defined for <math.h>. */ \
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to be defined for <math.h>. */ \
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if (LONG_DOUBLE_TYPE_SIZE == 128) \
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if (LONG_DOUBLE_TYPE_SIZE == 128) \
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builtin_define ("__X_FLOAT"); \
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builtin_define ("__X_FLOAT"); \
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\
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\
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/* Tru64 UNIX V4/V5 provide several ISO C94 \
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/* Tru64 UNIX V4/V5 provide several ISO C94 \
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features protected by the corresponding \
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features protected by the corresponding \
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__STDC_VERSION__ macro. libstdc++ v3 \
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__STDC_VERSION__ macro. libstdc++ v3 \
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needs them as well. */ \
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needs them as well. */ \
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if (c_dialect_cxx ()) \
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if (c_dialect_cxx ()) \
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builtin_define ("__STDC_VERSION__=199409L"); \
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builtin_define ("__STDC_VERSION__=199409L"); \
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} while (0)
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} while (0)
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/* Accept DEC C flags for multithreaded programs. We use _PTHREAD_USE_D4
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/* Accept DEC C flags for multithreaded programs. We use _PTHREAD_USE_D4
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instead of PTHREAD_USE_D4 since both have the same effect and the former
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instead of PTHREAD_USE_D4 since both have the same effect and the former
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doesn't invade the users' namespace. */
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doesn't invade the users' namespace. */
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#undef CPP_SUBTARGET_SPEC
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#undef CPP_SUBTARGET_SPEC
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#define CPP_SUBTARGET_SPEC \
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#define CPP_SUBTARGET_SPEC \
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"%{pthread|threads:-D_REENTRANT} %{threads:-D_PTHREAD_USE_D4}"
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"%{pthread|threads:-D_REENTRANT} %{threads:-D_PTHREAD_USE_D4}"
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/* Under OSF4, -p and -pg require -lprof1, and -lprof1 requires -lpdf. */
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/* Under OSF4, -p and -pg require -lprof1, and -lprof1 requires -lpdf. */
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#define LIB_SPEC \
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#define LIB_SPEC \
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"%{p|pg:-lprof1%{pthread|threads:_r} -lpdf} %{a:-lprof2} \
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"%{p|pg:-lprof1%{pthread|threads:_r} -lpdf} %{a:-lprof2} \
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%{threads: -lpthreads} %{pthread|threads: -lpthread -lmach -lexc} -lc"
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%{threads: -lpthreads} %{pthread|threads: -lpthread -lmach -lexc} -lc"
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/* Pass "-G 8" to ld because Alpha's CC does. Pass -O3 if we are
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/* Pass "-G 8" to ld because Alpha's CC does. Pass -O3 if we are
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optimizing, -O1 if we are not. Pass -S to silence `weak symbol
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optimizing, -O1 if we are not. Pass -S to silence `weak symbol
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multiply defined' warnings. Pass -shared, -non_shared or
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multiply defined' warnings. Pass -shared, -non_shared or
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-call_shared as appropriate. Pass -hidden_symbol so that our
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-call_shared as appropriate. Pass -hidden_symbol so that our
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constructor and call-frame data structures are not accidentally
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constructor and call-frame data structures are not accidentally
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overridden. */
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overridden. */
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#define LINK_SPEC \
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#define LINK_SPEC \
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"-G 8 %{O*:-O3} %{!O*:-O1} -S %{static:-non_shared} \
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"-G 8 %{O*:-O3} %{!O*:-O1} -S %{static:-non_shared} \
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%{!static:%{shared:-shared -hidden_symbol _GLOBAL_*} \
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%{!static:%{shared:-shared -hidden_symbol _GLOBAL_*} \
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%{!shared:-call_shared}} %{pg} %{taso} %{rpath*}"
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%{!shared:-call_shared}} %{pg} %{taso} %{rpath*}"
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#define STARTFILE_SPEC \
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#define STARTFILE_SPEC \
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"%{!shared:%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}"
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"%{!shared:%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}"
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#define ENDFILE_SPEC \
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#define ENDFILE_SPEC \
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"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
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"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
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#define MD_STARTFILE_PREFIX "/usr/lib/cmplrs/cc/"
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#define MD_STARTFILE_PREFIX "/usr/lib/cmplrs/cc/"
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/* Tru64 UNIX V5.1 requires a special as flag. Empty by default. */
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/* Tru64 UNIX V5.1 requires a special as flag. Empty by default. */
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#define ASM_OLDAS_SPEC ""
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#define ASM_OLDAS_SPEC ""
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/* In OSF/1 v3.2c, the assembler by default does not output file names which
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/* In OSF/1 v3.2c, the assembler by default does not output file names which
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causes mips-tfile to fail. Passing -g to the assembler fixes this problem.
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causes mips-tfile to fail. Passing -g to the assembler fixes this problem.
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??? Strictly speaking, we need -g only if the user specifies -g. Passing
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??? Strictly speaking, we need -g only if the user specifies -g. Passing
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it always means that we get slightly larger than necessary object files
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it always means that we get slightly larger than necessary object files
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if the user does not specify -g. If we don't pass -g, then mips-tfile
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if the user does not specify -g. If we don't pass -g, then mips-tfile
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will need to be fixed to work in this case. Pass -O0 since some
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will need to be fixed to work in this case. Pass -O0 since some
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optimization are broken and don't help us anyway. Pass -nocpp because
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optimization are broken and don't help us anyway. Pass -nocpp because
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there's no point in running CPP on our assembler output. */
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there's no point in running CPP on our assembler output. */
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#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
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#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
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#define ASM_SPEC "%{malpha-as:-g %(asm_oldas) -nocpp %{pg} -O0}"
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#define ASM_SPEC "%{malpha-as:-g %(asm_oldas) -nocpp %{pg} -O0}"
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#else
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#else
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#define ASM_SPEC "%{!mgas:-g %(asm_oldas) -nocpp %{pg} -O0}"
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#define ASM_SPEC "%{!mgas:-g %(asm_oldas) -nocpp %{pg} -O0}"
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#endif
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#endif
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/* Specify to run a post-processor, mips-tfile after the assembler
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/* Specify to run a post-processor, mips-tfile after the assembler
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has run to stuff the ecoff debug information into the object file.
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has run to stuff the ecoff debug information into the object file.
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This is needed because the Alpha assembler provides no way
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This is needed because the Alpha assembler provides no way
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of specifying such information in the assembly file. */
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of specifying such information in the assembly file. */
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#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
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#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
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#define ASM_FINAL_SPEC "\
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#define ASM_FINAL_SPEC "\
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%{malpha-as: %{!mno-mips-tfile: \
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%{malpha-as: %{!mno-mips-tfile: \
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\n mips-tfile %{v*: -v} \
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\n mips-tfile %{v*: -v} \
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%{K: -I %b.o~} \
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%{K: -I %b.o~} \
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%{!K: %{save-temps: -I %b.o~}} \
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%{!K: %{save-temps: -I %b.o~}} \
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%{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
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%{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
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%{.s:%i} %{!.s:%g.s}}}"
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%{.s:%i} %{!.s:%g.s}}}"
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#else
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#else
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#define ASM_FINAL_SPEC "\
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#define ASM_FINAL_SPEC "\
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%{!mgas: %{!mno-mips-tfile: \
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%{!mgas: %{!mno-mips-tfile: \
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\n mips-tfile %{v*: -v} \
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\n mips-tfile %{v*: -v} \
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%{K: -I %b.o~} \
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%{K: -I %b.o~} \
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%{!K: %{save-temps: -I %b.o~}} \
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%{!K: %{save-temps: -I %b.o~}} \
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%{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
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%{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
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%{.s:%i} %{!.s:%g.s}}}"
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%{.s:%i} %{!.s:%g.s}}}"
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#endif
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#endif
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#undef SUBTARGET_EXTRA_SPECS
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#undef SUBTARGET_EXTRA_SPECS
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#define SUBTARGET_EXTRA_SPECS { "asm_oldas", ASM_OLDAS_SPEC }
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#define SUBTARGET_EXTRA_SPECS { "asm_oldas", ASM_OLDAS_SPEC }
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/* Indicate that we have a stamp.h to use. */
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/* Indicate that we have a stamp.h to use. */
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#ifndef CROSS_COMPILE
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#ifndef CROSS_COMPILE
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#define HAVE_STAMP_H 1
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#define HAVE_STAMP_H 1
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#endif
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#endif
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/* Attempt to turn on access permissions for the stack. */
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/* Attempt to turn on access permissions for the stack. */
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#define ENABLE_EXECUTE_STACK \
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#define ENABLE_EXECUTE_STACK \
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void \
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void \
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__enable_execute_stack (void *addr) \
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__enable_execute_stack (void *addr) \
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{ \
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{ \
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extern int mprotect (const void *, size_t, int); \
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extern int mprotect (const void *, size_t, int); \
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long size = getpagesize (); \
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long size = getpagesize (); \
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long mask = ~(size-1); \
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long mask = ~(size-1); \
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char *page = (char *) (((long) addr) & mask); \
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char *page = (char *) (((long) addr) & mask); \
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char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
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char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
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\
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\
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/* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \
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/* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \
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if (mprotect (page, end - page, 7) < 0) \
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if (mprotect (page, end - page, 7) < 0) \
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perror ("mprotect of trampoline code"); \
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perror ("mprotect of trampoline code"); \
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}
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}
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/* Digital UNIX V4.0E (1091)/usr/include/sys/types.h 4.3.49.9 1997/08/14 */
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/* Digital UNIX V4.0E (1091)/usr/include/sys/types.h 4.3.49.9 1997/08/14 */
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#define SIZE_TYPE "long unsigned int"
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#define SIZE_TYPE "long unsigned int"
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#define PTRDIFF_TYPE "long int"
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#define PTRDIFF_TYPE "long int"
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/* The linker will stick __main into the .init section. */
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/* The linker will stick __main into the .init section. */
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#define HAS_INIT_SECTION
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#define HAS_INIT_SECTION
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#define LD_INIT_SWITCH "-init"
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#define LD_INIT_SWITCH "-init"
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#define LD_FINI_SWITCH "-fini"
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#define LD_FINI_SWITCH "-fini"
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/* The linker needs a space after "-o". This allows -oldstyle_liblookup to
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/* The linker needs a space after "-o". This allows -oldstyle_liblookup to
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be passed to ld. */
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be passed to ld. */
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#define SWITCHES_NEED_SPACES "o"
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#define SWITCHES_NEED_SPACES "o"
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/* Select a format to encode pointers in exception handling data. CODE
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/* Select a format to encode pointers in exception handling data. CODE
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is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
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is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
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true if the symbol may be affected by dynamic relocations.
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true if the symbol may be affected by dynamic relocations.
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We really ought to be using the SREL32 relocations that ECOFF has,
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We really ought to be using the SREL32 relocations that ECOFF has,
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but no version of the native assembler supports creating such things,
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but no version of the native assembler supports creating such things,
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and Compaq has no plans to rectify this. Worse, the dynamic loader
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and Compaq has no plans to rectify this. Worse, the dynamic loader
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cannot handle unaligned relocations, so we have to make sure that
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cannot handle unaligned relocations, so we have to make sure that
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things get padded appropriately. */
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things get padded appropriately. */
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#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
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#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
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(TARGET_GAS \
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(TARGET_GAS \
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? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
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? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
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: DW_EH_PE_aligned)
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: DW_EH_PE_aligned)
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/* This is how we tell the assembler that a symbol is weak. */
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/* This is how we tell the assembler that a symbol is weak. */
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#define ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, VALUE) \
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#define ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, VALUE) \
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do \
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do \
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{ \
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{ \
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(*targetm.asm_out.globalize_label) (FILE, NAME); \
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(*targetm.asm_out.globalize_label) (FILE, NAME); \
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fputs ("\t.weakext\t", FILE); \
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fputs ("\t.weakext\t", FILE); \
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assemble_name (FILE, NAME); \
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assemble_name (FILE, NAME); \
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if (VALUE) \
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if (VALUE) \
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{ \
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{ \
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fputc (' ', FILE); \
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fputc (' ', FILE); \
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assemble_name (FILE, VALUE); \
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assemble_name (FILE, VALUE); \
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} \
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} \
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fputc ('\n', FILE); \
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fputc ('\n', FILE); \
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} \
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} \
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while (0)
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while (0)
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#define ASM_WEAKEN_LABEL(FILE, NAME) ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, 0)
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#define ASM_WEAKEN_LABEL(FILE, NAME) ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, 0)
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/* Handle #pragma weak and #pragma pack. */
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/* Handle #pragma weak and #pragma pack. */
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#define HANDLE_SYSV_PRAGMA 1
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#define HANDLE_SYSV_PRAGMA 1
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/* Handle #pragma extern_prefix. Technically only needed for Tru64 5.x,
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/* Handle #pragma extern_prefix. Technically only needed for Tru64 5.x,
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but easier to manipulate preprocessor bits from here. */
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but easier to manipulate preprocessor bits from here. */
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#define TARGET_HANDLE_PRAGMA_EXTERN_PREFIX 1
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#define TARGET_HANDLE_PRAGMA_EXTERN_PREFIX 1
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