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jeremybenn |
/* Definitions of target machine for GNU compiler, for DEC Alpha on
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Tru64 UNIX V5.1.
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Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001,
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2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011
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Free Software Foundation, Inc.
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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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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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/* As of DEC OSF/1 V4.0, as can subtract adjacent 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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/* 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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#define TARGET_HAS_XFLOATING_LIBS 1
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/* Tru64 UNIX V5.1 uses IEEE QUAD format. */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (MASK_FPREGS | MASK_LONG_DOUBLE_128)
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/* The linker appears to perform invalid code optimizations that result
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in the ldgp emitted for the exception_receiver pattern being incorrectly
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linked. */
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#undef TARGET_LD_BUGGY_LDGP
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#define TARGET_LD_BUGGY_LDGP 1
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/* Tru64 UNIX V5.1 has the float and long double forms of math functions. */
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#undef TARGET_C99_FUNCTIONS
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#define TARGET_C99_FUNCTIONS 1
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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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do { \
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builtin_define_std ("unix"); \
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builtin_define_std ("SYSTYPE_BSD"); \
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builtin_define ("_SYSTYPE_BSD"); \
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builtin_define ("__osf__"); \
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builtin_define ("__digital__"); \
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builtin_define ("__arch64__"); \
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builtin_define ("_LONGLONG"); \
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builtin_assert ("system=unix"); \
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builtin_assert ("system=xpg4"); \
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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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to be defined for <math.h>. */ \
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if (LONG_DOUBLE_TYPE_SIZE == 128) \
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builtin_define ("__X_FLOAT"); \
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\
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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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__STDC_VERSION__ macro. libstdc++ v3 \
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needs them as well. */ \
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if (c_dialect_cxx ()) \
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builtin_define ("__STDC_VERSION__=199409L"); \
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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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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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#undef CPP_SPEC
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#define CPP_SPEC \
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"%{pthread|threads:-D_REENTRANT} %{threads:-D_PTHREAD_USE_D4}"
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/* -mcpu=native handling only makes sense with compiler running on
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an Alpha chip. */
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#if defined(__alpha__) || defined(__alpha)
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extern const char *host_detect_local_cpu (int argc, const char **argv);
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# define EXTRA_SPEC_FUNCTIONS \
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{ "local_cpu_detect", host_detect_local_cpu },
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# define MCPU_MTUNE_NATIVE_SPECS \
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" %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}" \
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" %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
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#else
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# define MCPU_MTUNE_NATIVE_SPECS ""
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#endif
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#define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS
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/* Under DEC OSF/1 V4, -p and -pg require -lprof1, and -lprof1 requires
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-lpdf. */
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#define LIB_SPEC \
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"%{p|pg:-lprof1%{pthread|threads:_r} -lpdf} \
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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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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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-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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overridden. */
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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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%{!static:%{shared:-shared -hidden_symbol _GLOBAL_*} \
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%{!shared:-call_shared}} %{pg} %{taso} %{rpath*}"
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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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#define ENDFILE_SPEC \
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"%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
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#define MD_STARTFILE_PREFIX "/usr/lib/cmplrs/cc/"
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/* In Tru64 UNIX V5.1, Compaq introduced a new assembler
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(/usr/lib/cmplrs/cc/adu) which currently (versions between 3.04.29 and
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3.04.32) breaks mips-tfile. Passing the undocumented -oldas flag reverts
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to using the old assembler (/usr/lib/cmplrs/cc/as[01]).
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It is clearly not desirable to depend on this undocumented flag, and
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Compaq wants -oldas to go away soon, but until they have released a
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new adu that works with mips-tfile, this is the only option.
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In some versions of the DTK, the assembler driver invokes ld after
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assembly. This has been fixed in current versions, but adding -c
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works as expected for all versions. */
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#define ASM_OLDAS_SPEC "-oldas -c"
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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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??? 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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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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optimization are broken and don't help us anyway. */
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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_SPEC " %{pg} -O0}"
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#else
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#define ASM_SPEC "%{!mgas:-g " ASM_OLDAS_SPEC " %{pg} -O0}"
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#endif
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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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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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#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
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#define ASM_FINAL_SPEC "\
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%{malpha-as: %{!mno-mips-tfile: \
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\n mips-tfile %{v*: -v} \
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%{K: -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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%{,assembler:%i;:%g.s}}}"
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#else
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#define ASM_FINAL_SPEC "\
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%{!mgas: %{!mno-mips-tfile: \
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\n mips-tfile %{v*: -v} \
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%{K: -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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%{,assembler:%i;:%g.s}}}"
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#endif
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/* Indicate that we have a stamp.h to use. */
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#ifndef CROSS_DIRECTORY_STRUCTURE
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#define HAVE_STAMP_H 1
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#endif
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#define HAVE_ENABLE_EXECUTE_STACK
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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 PTRDIFF_TYPE "long int"
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#define SIG_ATOMIC_TYPE "int"
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#define INT8_TYPE "signed char"
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#define INT16_TYPE "short int"
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#define INT32_TYPE "int"
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#define INT64_TYPE "long int"
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#define UINT8_TYPE "unsigned char"
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#define UINT16_TYPE "short unsigned int"
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#define UINT32_TYPE "unsigned int"
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#define UINT64_TYPE "long unsigned int"
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#define INT_LEAST8_TYPE "signed char"
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#define INT_LEAST16_TYPE "short int"
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#define INT_LEAST32_TYPE "int"
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#define INT_LEAST64_TYPE "long int"
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#define UINT_LEAST8_TYPE "unsigned char"
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#define UINT_LEAST16_TYPE "short unsigned int"
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#define UINT_LEAST32_TYPE "unsigned int"
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#define UINT_LEAST64_TYPE "long unsigned int"
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#define INT_FAST8_TYPE "signed char"
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#define INT_FAST16_TYPE "int"
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#define INT_FAST32_TYPE "int"
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#define INT_FAST64_TYPE "long int"
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#define UINT_FAST8_TYPE "unsigned char"
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#define UINT_FAST16_TYPE "unsigned int"
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#define UINT_FAST32_TYPE "unsigned int"
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#define UINT_FAST64_TYPE "long unsigned int"
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#define INTPTR_TYPE "long int"
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#define UINTPTR_TYPE "long unsigned int"
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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 LD_INIT_SWITCH "-init"
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#define LD_FINI_SWITCH "-fini"
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/* From Tru64 UNIX Object File and Symbol Table Format Specification,
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2.3.5 Alignment, p.19. */
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#define MAX_OFILE_ALIGNMENT (64 * 1024 * BITS_PER_UNIT)
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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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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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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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cannot handle unaligned relocations, so we have to make sure that
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things get padded appropriately. */
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#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
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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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: DW_EH_PE_aligned)
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/* The Tru64 UNIX assembler warns on .lcomm with SIZE 0, so use 1 in that
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case. */
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#undef ASM_OUTPUT_LOCAL
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#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE,ROUNDED) \
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( fputs ("\t.lcomm ", (FILE)), \
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assemble_name ((FILE), (NAME)), \
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fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE) ? (SIZE) : 1))
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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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do \
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{ \
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(*targetm.asm_out.globalize_label) (FILE, NAME); \
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fputs ("\t.weakext\t", FILE); \
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assemble_name (FILE, NAME); \
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if (VALUE) \
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{ \
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fputc (' ', FILE); \
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assemble_name (FILE, VALUE); \
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} \
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fputc ('\n', FILE); \
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} \
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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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/* The native assembler doesn't understand parenthesis. */
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#define TARGET_ASM_OPEN_PAREN ""
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#define TARGET_ASM_CLOSE_PAREN ""
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/* Handle #pragma extern_prefix. */
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#define TARGET_HANDLE_PRAGMA_EXTERN_PREFIX 1
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#define TARGET_HAVE_NAMED_SECTIONS false
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