-/* Definitions of target machine for GNU compiler, for DEC Alpha on Tru64 5.
- Copyright (C) 2000, 2001, 2004, 2005 Free Software Foundation, Inc.
+/* Definitions of target machine for GNU compiler, for DEC Alpha on
+ Tru64 UNIX V5.1.
+ Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001,
+ 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010
+ Free Software Foundation, Inc.
+ Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
- This file is part of GCC.
+This file is part of GCC.
- GCC is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
- GCC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GCC; see the file COPYING. If not, write to
- the Free Software Foundation, 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
-/* Tru64 5.1 uses IEEE QUAD format. */
+/* As of DEC OSF/1 V4.0, as can subtract adjacent labels. */
+
+#undef TARGET_AS_CAN_SUBTRACT_LABELS
+#define TARGET_AS_CAN_SUBTRACT_LABELS 1
+
+/* The GEM libraries for X_float are present, though not used by C. */
+
+#undef TARGET_HAS_XFLOATING_LIBS
+#define TARGET_HAS_XFLOATING_LIBS 1
+
+/* Tru64 UNIX V5.1 uses IEEE QUAD format. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_FPREGS | MASK_LONG_DOUBLE_128)
+/* The linker appears to perform invalid code optimizations that result
+ in the ldgp emitted for the exception_receiver pattern being incorrectly
+ linked. */
+#undef TARGET_LD_BUGGY_LDGP
+#define TARGET_LD_BUGGY_LDGP 1
+
+/* Tru64 UNIX V5.1 has the float and long double forms of math functions. */
+#undef TARGET_C99_FUNCTIONS
+#define TARGET_C99_FUNCTIONS 1
+
+/* Names to predefine in the preprocessor for this target machine. */
+
+#define TARGET_OS_CPP_BUILTINS() \
+ do { \
+ builtin_define_std ("unix"); \
+ builtin_define_std ("SYSTYPE_BSD"); \
+ builtin_define ("_SYSTYPE_BSD"); \
+ builtin_define ("__osf__"); \
+ builtin_define ("__digital__"); \
+ builtin_define ("__arch64__"); \
+ builtin_define ("_LONGLONG"); \
+ builtin_assert ("system=unix"); \
+ builtin_assert ("system=xpg4"); \
+ /* Tru64 UNIX V5 has a 16 byte long \
+ double type and requires __X_FLOAT \
+ to be defined for <math.h>. */ \
+ if (LONG_DOUBLE_TYPE_SIZE == 128) \
+ builtin_define ("__X_FLOAT"); \
+ \
+ /* Tru64 UNIX V4/V5 provide several ISO C94 \
+ features protected by the corresponding \
+ __STDC_VERSION__ macro. libstdc++ v3 \
+ needs them as well. */ \
+ if (c_dialect_cxx ()) \
+ builtin_define ("__STDC_VERSION__=199409L"); \
+ } while (0)
+
+/* Accept DEC C flags for multithreaded programs. We use _PTHREAD_USE_D4
+ instead of PTHREAD_USE_D4 since both have the same effect and the former
+ doesn't invade the users' namespace. */
+
+#undef CPP_SPEC
+#define CPP_SPEC \
+"%{pthread|threads:-D_REENTRANT} %{threads:-D_PTHREAD_USE_D4}"
+
+/* Under DEC OSF/1 V4, -p and -pg require -lprof1, and -lprof1 requires
+ -lpdf. */
+
+#define LIB_SPEC \
+"%{p|pg:-lprof1%{pthread|threads:_r} -lpdf} %{a:-lprof2} \
+ %{threads: -lpthreads} %{pthread|threads: -lpthread -lmach -lexc} -lc"
+
+/* Pass "-G 8" to ld because Alpha's CC does. Pass -O3 if we are
+ optimizing, -O1 if we are not. Pass -S to silence `weak symbol
+ multiply defined' warnings. Pass -shared, -non_shared or
+ -call_shared as appropriate. Pass -hidden_symbol so that our
+ constructor and call-frame data structures are not accidentally
+ overridden. */
+#define LINK_SPEC \
+ "-G 8 %{O*:-O3} %{!O*:-O1} -S %{static:-non_shared} \
+ %{!static:%{shared:-shared -hidden_symbol _GLOBAL_*} \
+ %{!shared:-call_shared}} %{pg} %{taso} %{rpath*}"
+
+#define STARTFILE_SPEC \
+ "%{!shared:%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}"
+
+#define ENDFILE_SPEC \
+ "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
+
+#define MD_STARTFILE_PREFIX "/usr/lib/cmplrs/cc/"
+
/* In Tru64 UNIX V5.1, Compaq introduced a new assembler
(/usr/lib/cmplrs/cc/adu) which currently (versions between 3.04.29 and
3.04.32) breaks mips-tfile. Passing the undocumented -oldas flag reverts
to using the old assembler (/usr/lib/cmplrs/cc/as[01]).
- The V5.0 and V5.0A assemblers silently ignore -oldas, so it can be
- specified here.
-
It is clearly not desirable to depend on this undocumented flag, and
Compaq wants -oldas to go away soon, but until they have released a
new adu that works with mips-tfile, this is the only option.
assembly. This has been fixed in current versions, but adding -c
works as expected for all versions. */
-#undef ASM_OLDAS_SPEC
#define ASM_OLDAS_SPEC "-oldas -c"
-/* The linker appears to perform invalid code optimizations that result
- in the ldgp emitted for the exception_receiver pattern being incorrectly
- linked. */
-#undef TARGET_LD_BUGGY_LDGP
-#define TARGET_LD_BUGGY_LDGP 1
+/* In OSF/1 v3.2c, the assembler by default does not output file names which
+ causes mips-tfile to fail. Passing -g to the assembler fixes this problem.
+ ??? Strictly speaking, we need -g only if the user specifies -g. Passing
+ it always means that we get slightly larger than necessary object files
+ if the user does not specify -g. If we don't pass -g, then mips-tfile
+ will need to be fixed to work in this case. Pass -O0 since some
+ optimization are broken and don't help us anyway. Pass -nocpp because
+ there's no point in running CPP on our assembler output. */
+#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
+#define ASM_SPEC "%{malpha-as:-g " ASM_OLDAS_SPEC " -nocpp %{pg} -O0}"
+#else
+#define ASM_SPEC "%{!mgas:-g " ASM_OLDAS_SPEC " -nocpp %{pg} -O0}"
+#endif
-/* Tru64 v5.1 has the float and long double forms of math functions. */
-#undef TARGET_C99_FUNCTIONS
-#define TARGET_C99_FUNCTIONS 1
+/* Specify to run a post-processor, mips-tfile after the assembler
+ has run to stuff the ecoff debug information into the object file.
+ This is needed because the Alpha assembler provides no way
+ of specifying such information in the assembly file. */
+
+#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
+
+#define ASM_FINAL_SPEC "\
+%{malpha-as: %{!mno-mips-tfile: \
+ \n mips-tfile %{v*: -v} \
+ %{K: -I %b.o~} \
+ %{!K: %{save-temps: -I %b.o~}} \
+ %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
+ %{,assembler:%i;:%g.s}}}"
+
+#else
+#define ASM_FINAL_SPEC "\
+%{!mgas: %{!mno-mips-tfile: \
+ \n mips-tfile %{v*: -v} \
+ %{K: -I %b.o~} \
+ %{!K: %{save-temps: -I %b.o~}} \
+ %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
+ %{,assembler:%i;:%g.s}}}"
+
+#endif
+
+/* Indicate that we have a stamp.h to use. */
+#ifndef CROSS_DIRECTORY_STRUCTURE
+#define HAVE_STAMP_H 1
+#endif
+
+/* Attempt to turn on access permissions for the stack. */
+
+#define ENABLE_EXECUTE_STACK \
+void \
+__enable_execute_stack (void *addr) \
+{ \
+ extern int mprotect (const void *, size_t, int); \
+ long size = getpagesize (); \
+ long mask = ~(size-1); \
+ char *page = (char *) (((long) addr) & mask); \
+ char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
+ \
+ /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \
+ if (mprotect (page, end - page, 7) < 0) \
+ perror ("mprotect of trampoline code"); \
+}
+
+/* Digital UNIX V4.0E (1091)/usr/include/sys/types.h 4.3.49.9 1997/08/14 */
+#define SIZE_TYPE "long unsigned int"
+#define PTRDIFF_TYPE "long int"
+
+#define SIG_ATOMIC_TYPE "int"
+
+#define INT8_TYPE "signed char"
+#define INT16_TYPE "short int"
+#define INT32_TYPE "int"
+#define INT64_TYPE "long int"
+#define UINT8_TYPE "unsigned char"
+#define UINT16_TYPE "short unsigned int"
+#define UINT32_TYPE "unsigned int"
+#define UINT64_TYPE "long unsigned int"
+
+#define INT_LEAST8_TYPE "signed char"
+#define INT_LEAST16_TYPE "short int"
+#define INT_LEAST32_TYPE "int"
+#define INT_LEAST64_TYPE "long int"
+#define UINT_LEAST8_TYPE "unsigned char"
+#define UINT_LEAST16_TYPE "short unsigned int"
+#define UINT_LEAST32_TYPE "unsigned int"
+#define UINT_LEAST64_TYPE "long unsigned int"
+
+#define INT_FAST8_TYPE "signed char"
+#define INT_FAST16_TYPE "int"
+#define INT_FAST32_TYPE "int"
+#define INT_FAST64_TYPE "long int"
+#define UINT_FAST8_TYPE "unsigned char"
+#define UINT_FAST16_TYPE "unsigned int"
+#define UINT_FAST32_TYPE "unsigned int"
+#define UINT_FAST64_TYPE "long unsigned int"
+
+#define INTPTR_TYPE "long int"
+#define UINTPTR_TYPE "long unsigned int"
+
+/* The linker will stick __main into the .init section. */
+#define HAS_INIT_SECTION
+#define LD_INIT_SWITCH "-init"
+#define LD_FINI_SWITCH "-fini"
+
+/* 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.
+
+ We really ought to be using the SREL32 relocations that ECOFF has,
+ but no version of the native assembler supports creating such things,
+ and Compaq has no plans to rectify this. Worse, the dynamic loader
+ cannot handle unaligned relocations, so we have to make sure that
+ things get padded appropriately. */
+#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
+ (TARGET_GAS \
+ ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
+ : DW_EH_PE_aligned)
+
+/* This is how we tell the assembler that a symbol is weak. */
+
+#define ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, VALUE) \
+ do \
+ { \
+ (*targetm.asm_out.globalize_label) (FILE, NAME); \
+ fputs ("\t.weakext\t", FILE); \
+ assemble_name (FILE, NAME); \
+ if (VALUE) \
+ { \
+ fputc (' ', FILE); \
+ assemble_name (FILE, VALUE); \
+ } \
+ fputc ('\n', FILE); \
+ } \
+ while (0)
+
+#define ASM_WEAKEN_LABEL(FILE, NAME) ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, 0)
+
+/* The native assembler doesn't understand parenthesis. */
+#define TARGET_ASM_OPEN_PAREN ""
+#define TARGET_ASM_CLOSE_PAREN ""
+
+/* Handle #pragma weak and #pragma pack. */
+#define HANDLE_SYSV_PRAGMA 1
+/* Handle #pragma extern_prefix. */
+#define TARGET_HANDLE_PRAGMA_EXTERN_PREFIX 1
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