/* Definitions for SOM assembler support.
- Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GNU CC.
} \
} \
/* anonymous args */ \
- if ((TYPE_ARG_TYPES (tree_type) != 0 \
- && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (tree_type)))\
- != void_type_node)) \
- || current_function_varargs) \
+ if (TYPE_ARG_TYPES (tree_type) != 0 \
+ && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (tree_type)))\
+ != void_type_node)) \
{ \
for (; i < 4; i++) \
fprintf (FILE, ",ARGW%d=GR", i); \
/* The .align directive in the HP assembler allows up to a 32 alignment. */
#define MAX_OFILE_ALIGNMENT 32768
-/* SOM does not support the init_priority C++ attribute. */
-#undef SUPPORTS_INIT_PRIORITY
-#define SUPPORTS_INIT_PRIORITY 0
+/* The SOM linker hardcodes paths into binaries. As a result, dotdots
+ must be removed from library prefixes to prevent binaries from depending
+ on the location of the GCC tool directory. The downside is GCC
+ cannot be moved after installation using a symlink. */
+#define ALWAYS_STRIP_DOTDOT 1
+
+/* Aggregates with a single float or double field should be passed and
+ returned in the general registers. */
+#define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) (MODE==SFmode || MODE==DFmode)
+
+/* If GAS supports weak, we can support weak when we have working linker
+ support for secondary definitions and are generating code for GAS. */
+#ifdef HAVE_GAS_WEAK
+#define SUPPORTS_WEAK (TARGET_SOM_SDEF && TARGET_GAS)
+#else
+#define SUPPORTS_WEAK 0
+#endif
+
+/* We can support one only if we support weak. */
+#define SUPPORTS_ONE_ONLY SUPPORTS_WEAK
+
+/* Use weak (secondary definitions) to make one only declarations. */
+#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
+
+/* This is how we tell the assembler that a symbol is weak. The SOM
+ weak implementation uses the secondary definition (sdef) flag.
+
+ The behavior of sdef symbols is similar to ELF weak symbols in that
+ multiple definitions can occur without incurring a link error.
+ However, they differ in the following ways:
+ 1) Undefined sdef symbols are not allowed.
+ 2) The linker searches for undefined sdef symbols and will load an
+ archive library member to resolve an undefined sdef symbol.
+ 3) The exported symbol from a shared library is a primary symbol
+ rather than a sdef symbol. Thus, more care is needed in the
+ ordering of libraries.
+
+ It appears that the linker discards extra copies of "weak" functions
+ when linking shared libraries, independent of whether or not they
+ are in their own section. In linking final executables, -Wl,-O can
+ be used to remove dead procedures. Thus, support for named sections
+ is not needed and in previous testing caused problems with various
+ HP tools. */
+#define ASM_WEAKEN_LABEL(FILE,NAME) \
+ do { fputs ("\t.weak\t", FILE); \
+ assemble_name (FILE, NAME); \
+ fputc ('\n', FILE); \
+ if (! FUNCTION_NAME_P (NAME)) \
+ { \
+ fputs ("\t.EXPORT ", FILE); \
+ assemble_name (FILE, NAME); \
+ fputs (",DATA\n", FILE); \
+ } \
+ } while (0)
+
+/* We can't handle weak aliases, and therefore can't support pragma weak.
+ Suppress the use of pragma weak in gthr-dce.h and gthr-posix.h. */
+#define GTHREAD_USE_WEAK 0
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