/* 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.
#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) \
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.
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
%{.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
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