PR c++/24686

[pf3gnuchains/gcc-fork.git] / gcc / defaults.h

diff --git a/gcc/defaults.h b/gcc/defaults.h
index af3e237..9d82960 100644 (file)
--- a/gcc/defaults.h
+++ b/gcc/defaults.h
@@ -166,6 +166,27 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
 #endif
 #endif
 
+/* This is how we tell the assembler that a symbol is a weak alias to
+   another symbol that doesn't require the other symbol to be defined.
+   Uses of the former will turn into weak uses of the latter, i.e.,
+   uses that, in case the latter is undefined, will not cause errors,
+   and will add it to the symbol table as weak undefined.  However, if
+   the latter is referenced directly, a strong reference prevails.  */
+#ifndef ASM_OUTPUT_WEAKREF
+#if defined HAVE_GAS_WEAKREF
+#define ASM_OUTPUT_WEAKREF(FILE, NAME, VALUE)                          \
+  do                                                                   \
+    {                                                                  \
+      fprintf ((FILE), "\t.weakref\t");                                        \
+      assemble_name ((FILE), (NAME));                                  \
+      fprintf ((FILE), ",");                                           \
+      assemble_name ((FILE), (VALUE));                                 \
+      fprintf ((FILE), "\n");                                          \
+    }                                                                  \
+  while (0)
+#endif
+#endif
+
 /* How to emit a .type directive.  */
 #ifndef ASM_OUTPUT_TYPE_DIRECTIVE
 #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT
@@ -835,4 +856,15 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
 #define FRAME_GROWS_DOWNWARD 0
 #endif
 
+/* On most machines, the CFA coincides with the first incoming parm.  */
+#ifndef ARG_POINTER_CFA_OFFSET
+#define ARG_POINTER_CFA_OFFSET(FNDECL) FIRST_PARM_OFFSET (FNDECL)
+#endif
+
+/* The offset from the incoming value of %sp to the top of the stack frame
+   for the current function.  */
+#ifndef INCOMING_FRAME_SP_OFFSET
+#define INCOMING_FRAME_SP_OFFSET 0
+#endif
+
 #endif  /* ! GCC_DEFAULTS_H */