darwin9.h (ASM_OUTPUT_ALIGNED_COMMON): Add.

	* config/darwin9.h (ASM_OUTPUT_ALIGNED_COMMON): Add.
	* config/darwin.h (MAX_OFILE_ALIGNMENT): Fix.

testsuite:
	* gcc.dg/darwin-comm.c: Add.

From-SVN: r123321

gcc/ChangeLog

+2007-03-28  Mike Stump  <mrs@apple.com>
+
+	* config/darwin9.h (ASM_OUTPUT_ALIGNED_COMMON): Add.
+	* config/darwin.h (MAX_OFILE_ALIGNMENT): Fix.
+
 2007-03-28  Dwarakanath Rajagopal  <dwarak.rajagopal@amd.com>
 
 	* config.gcc: Accept barcelona as a variant of amdfam10.

gcc/config/darwin.h

@@ -674,11 +674,11 @@ extern GTY(()) int darwin_ms_struct;
       }									\
   } while (0)
 
-/* The maximum alignment which the object file format can support.
-   For Mach-O, this is 2^15.  */
+/* The maximum alignment which the object file format can support in
+   bits.  For Mach-O, this is 2^15 bytes.  */
 
 #undef	MAX_OFILE_ALIGNMENT
-#define MAX_OFILE_ALIGNMENT 0x8000
+#define MAX_OFILE_ALIGNMENT (0x8000 * 8)
 
 /* Declare the section variables.  */
 #ifndef USED_FOR_TARGET

gcc/config/darwin9.h

@@ -20,3 +20,14 @@
 
 /* The linker can generate branch islands.  */
 #define DARWIN_LINKER_GENERATES_ISLANDS 1
+
+#undef  ASM_OUTPUT_ALIGNED_COMMON
+#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)		\
+  do {									\
+    unsigned HOST_WIDE_INT _new_size = SIZE;				\
+    fprintf ((FILE), ".comm ");						\
+    assemble_name ((FILE), (NAME));					\
+    if (_new_size == 0) _new_size = 1;					\
+    fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",		\
+	     (SIZE), floor_log2 ((ALIGN) / BITS_PER_UNIT));		\
+  } while (0)

gcc/testsuite/ChangeLog

+2007-03-28  Mike Stump  <mrs@apple.com>
+
+	* gcc.dg/darwin-comm.c: Add.
+
 2007-03-28  Eric Christopher  <echristo@apple.com>
 
 	* lib/target-supports.exp (check_effective_target_fstack_protector): New.

gcc/testsuite/gcc.dg/darwin-comm.c

+/* { dg-do compile { target *-*-darwin9* } } */
+/* { dg-final { scan-assembler ".comm _foo,1,15" } } */
+
+char foo __attribute__ ((aligned(32768)));