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Diffstat (limited to 'gcc/config/alpha/osf5.h')
| -rw-r--r-- | gcc/config/alpha/osf5.h | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/gcc/config/alpha/osf5.h b/gcc/config/alpha/osf5.h new file mode 100644 index 000000000..7713b7ee0 --- /dev/null +++ b/gcc/config/alpha/osf5.h @@ -0,0 +1,278 @@ +/* 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, 2011 + Free Software Foundation, Inc. + Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu) + +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 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. + +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/>. */ + +/* 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} \ + %{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 \ + "%{Ofast|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]). + + 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. + + In some versions of the DTK, the assembler driver invokes ld after + assembly. This has been fixed in current versions, but adding -c + works as expected for all versions. */ + +#define ASM_OLDAS_SPEC "-oldas -c" + +/* 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. */ +#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0 +#define ASM_SPEC "%{malpha-as:-g " ASM_OLDAS_SPEC " %{pg} -O0}" +#else +#define ASM_SPEC "%{!mgas:-g " ASM_OLDAS_SPEC " %{pg} -O0}" +#endif + +/* 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" + +/* From Tru64 UNIX Object File and Symbol Table Format Specification, + 2.3.5 Alignment, p.19. */ +#define MAX_OFILE_ALIGNMENT (64 * 1024 * BITS_PER_UNIT) + +/* 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) + +/* The Tru64 UNIX assembler warns on .lcomm with SIZE 0, so use 1 in that + case. */ +#undef ASM_OUTPUT_LOCAL +#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE,ROUNDED) \ +( fputs ("\t.lcomm ", (FILE)), \ + assemble_name ((FILE), (NAME)), \ + fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE) ? (SIZE) : 1)) + +/* 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 extern_prefix. */ +#define TARGET_HANDLE_PRAGMA_EXTERN_PREFIX 1 + +#define MD_UNWIND_SUPPORT "config/alpha/osf5-unwind.h" |