X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fconfig%2Falpha%2Fosf.h;h=250974c46e7b7666178191e6677e2702514a6e64;hp=ae4170d25e3cd784db06a25dd215ad79ec9791e9;hb=00320b83449e02d2f85db1e6992649a3694c853c;hpb=4affb66c6ce3218a6985d7f87a1545db44e5779e

diff --git a/gcc/config/alpha/osf.h b/gcc/config/alpha/osf.h
index ae4170d25e3..250974c46e7 100644
--- a/gcc/config/alpha/osf.h
+++ b/gcc/config/alpha/osf.h
@@ -1,5 +1,6 @@
 /* Definitions of target machine for GNU compiler, for DEC Alpha on OSF/1.
-   Copyright (C) 1992, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2001
+   Free Software Foundation, Inc.
    Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
 
 This file is part of GNU CC.
@@ -24,27 +25,52 @@ Boston, MA 02111-1307, USA.  */
 #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
+
 /* Names to predefine in the preprocessor for this target machine.  */
 
 #define CPP_PREDEFINES "\
--Dunix -D__osf__ -D__alpha -D__alpha__ -D_LONGLONG -DSYSTYPE_BSD  \
--D_SYSTYPE_BSD -Asystem(unix) -Asystem(xpg4) -Acpu(alpha) -Amachine(alpha)"
+-Dunix -D__osf__ -D_LONGLONG -DSYSTYPE_BSD \
+-D_SYSTYPE_BSD -Asystem=unix -Asystem=xpg4"
+
+/* Tru64 UNIX V5 requires additional definitions for 16 byte long double
+   support.  Empty by default.  */
+
+#define CPP_XFLOAT_SPEC ""
+
+/* 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_SUBTARGET_SPEC
+#define CPP_SUBTARGET_SPEC \
+"%{pthread|threads:-D_REENTRANT} %{threads:-D_PTHREAD_USE_D4} %(cpp_xfloat)"
 
 /* Under OSF4, -p and -pg require -lprof1, and -lprof1 requires -lpdf.  */
 
-#define LIB_SPEC "%{p:-lprof1 -lpdf} %{pg:-lprof1 -lpdf} %{a:-lprof2} -lc"
+#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 -shared, -non_shared or
-   -call_shared as appropriate.  Also pass -pg.  */
+   -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} %{static:-non_shared} \
-   %{!static:%{shared:-shared} %{!shared:-call_shared}} %{pg} %{taso} \
-   %{rpath*}"
+   %{!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/"
 
 #define ASM_FILE_START(FILE)					\
@@ -55,18 +81,22 @@ Boston, MA 02111-1307, USA.  */
   fprintf (FILE, "\t.set noat\n");				\
   if (TARGET_SUPPORT_ARCH)					\
     fprintf (FILE, "\t.arch %s\n",				\
-             alpha_cpu == PROCESSOR_EV6 ? "ev6"			\
-	     : (alpha_cpu == PROCESSOR_EV5			\
+             TARGET_CPU_EV6 ? "ev6"				\
+	     : (TARGET_CPU_EV5					\
 		? (TARGET_MAX ? "pca56" : TARGET_BWX ? "ev56" : "ev5") \
 		: "ev4"));					\
 								\
   ASM_OUTPUT_SOURCE_FILENAME (FILE, main_input_filename);	\
 }
 
+/* Tru64 UNIX V5.1 requires a special as flag.  Empty by default.  */
+
+#define ASM_OLDAS_SPEC ""
+
 /* No point in running CPP on our assembler output.  */
 #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
 /* Don't pass -g to GNU as, because some versions don't accept this option.  */
-#define ASM_SPEC "%{malpha-as:-g} -nocpp %{pg}"
+#define ASM_SPEC "%{malpha-as:-g %(asm_oldas)} -nocpp %{pg}"
 #else
 /* 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.
@@ -75,7 +105,7 @@ Boston, MA 02111-1307, USA.  */
    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.  */
-#define ASM_SPEC "%{!mgas:-g} -nocpp %{pg} -O0"
+#define ASM_SPEC "%{!mgas:-g %(asm_oldas)} -nocpp %{pg} -O0"
 #endif
 
 /* Specify to run a post-processor, mips-tfile after the assembler
@@ -103,3 +133,79 @@ Boston, MA 02111-1307, USA.  */
 		%{.s:%i} %{!.s:%g.s}}}"
 
 #endif
+
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS		\
+  { "cpp_xfloat", CPP_XFLOAT_SPEC },	\
+  { "asm_oldas", ASM_OLDAS_SPEC }
+
+/* Indicate that we have a stamp.h to use.  */
+#ifndef CROSS_COMPILE
+#define HAVE_STAMP_H 1
+#endif
+
+/* Attempt to turn on access permissions for the stack.  */
+
+#define TRANSFER_FROM_TRAMPOLINE					\
+extern void __enable_execute_stack PARAMS ((void *));			\
+									\
+void									\
+__enable_execute_stack (addr)						\
+     void *addr;							\
+{									\
+  extern int mprotect PARAMS ((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"
+
+/* 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							\
+    {							\
+      ASM_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)
+
+/* Handle #pragma weak and #pragma pack.  */
+#undef HANDLE_SYSV_PRAGMA
+#define HANDLE_SYSV_PRAGMA 1