Deal with small statics and -msdata

From-SVN: r11115

diff --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h
index a390992f4e1f8c8e46891df082a68986b46a35a3..4cd6b585838676ef6db83d20c857b45a89884020 100644 (file)
--- a/gcc/config/rs6000/sysv4.h
+++ b/gcc/config/rs6000/sysv4.h
@@ -509,6 +509,34 @@ extern int rs6000_pic_labelno;
 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX)  \
   fprintf (FILE, ".%s", PREFIX)
 
+/* This says how to output assembler code to declare an
+   uninitialized internal linkage data object.  Under SVR4,
+   the linker seems to want the alignment of data objects
+   to depend on their types.  We do exactly that here.  */
+
+#ifndef LOCAL_ASM_OP
+#define LOCAL_ASM_OP   ".local"
+#endif
+
+#undef ASM_OUTPUT_ALIGNED_LOCAL
+#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)              \
+do {                                                                   \
+  if (TARGET_SDATA && (SIZE) > 0 && (SIZE) <= g_switch_value)          \
+    {                                                                  \
+      sbss_section ();                                                 \
+      ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT));     \
+      ASM_OUTPUT_LABEL (FILE, NAME);                                   \
+      ASM_OUTPUT_SKIP (FILE, SIZE);                                    \
+    }                                                                  \
+  else                                                                 \
+    {                                                                  \
+      fprintf ((FILE), "\t%s\t", LOCAL_ASM_OP);                                \
+      assemble_name ((FILE), (NAME));                                  \
+      fprintf ((FILE), "\n");                                          \
+      ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN);             \
+    }                                                                  \
+} while (0)
+
 /* Pass various options to the assembler */
 #undef ASM_SPEC
 #define ASM_SPEC "-u %(asm_cpu) \