m32c-protos.h (m32c_note_pragma_address): Declare.

* config/m32c/m32c-protos.h (m32c_note_pragma_address): Declare.
(m32c_output_aligned_common): Likewise.
* config/m32c/m32c.h (ASM_OUTPUT_ALIGNED_DECL_COMMON): New.
(ASM_OUTPUT_ALIGNED_DECL_LOCAL): New.
* config/m32c/m32c-pragma.c (m32c_pragma_address): New.
(m32c_register_pragmas): Register it.
* config/m32c/m32c.c (m32c_get_pragma_address): New.
(m32c_insert_attributes): Set #pragma address decls volatile.
(pragma_entry_eq): New.
(pragma_entry_hash): New.
(m32c_note_pragma_address): New.
(m32c_get_pragma_address): New.
(m32c_output_aligned_common): New.
* doc/extend.texi: Document the new pragma.

* config/m32c/m32c.c (m32c_illegal_subreg_p): Reject illegal MEMs
also.
* config/m32c/predicates.md (m32c_any_operand): Check the code
instead of memory_operand so as to allow matching volatile MEMs.
(m32c_nonimmediate_operand): Likewise.
(mra_operand): Allow volatiles.

From-SVN: r161425

1 files changed, 38 insertions, 0 deletions

diff --git a/gcc/config/m32c/m32c-pragma.c b/gcc/config/m32c/m32c-pragma.c
index 49fe023..b576152 100644
--- a/gcc/config/m32c/m32c-pragma.c
+++ b/gcc/config/m32c/m32c-pragma.c
@@ -87,9 +87,47 @@ m32c_pragma_memregs (cpp_reader * reader ATTRIBUTE_UNUSED)
   error ("#pragma GCC memregs takes a number [0..16]");
 }
 
+/* Implements the "pragma ADDRESS" pragma.  This pragma takes a
+   variable name and an address, and arranges for that variable to be
+   "at" that address.  The variable is also made volatile.  */
+static void
+m32c_pragma_address (cpp_reader * reader ATTRIBUTE_UNUSED)
+{
+  /* on off */
+  tree var, addr;
+  enum cpp_ttype type;
+  const char *var_str;
+
+  type = pragma_lex (&var);
+  if (type == CPP_NAME)
+    {
+      var_str = IDENTIFIER_POINTER (var);
+
+      type = pragma_lex (&addr);
+      if (type == CPP_NUMBER)
+	{
+	  if (var != error_mark_node)
+	    {
+	      unsigned uaddr = tree_low_cst (addr, 1);
+	      m32c_note_pragma_address (IDENTIFIER_POINTER (var), uaddr);
+	    }
+
+	  type = pragma_lex (&var);
+	  if (type != CPP_EOF)
+	    {
+	      error ("junk at end of #pragma ADDRESS");
+	    }
+	  return;
+	}
+    }
+  error ("malformed #pragma ADDRESS variable address");
+}
+
 /* Implements REGISTER_TARGET_PRAGMAS.  */
 void
 m32c_register_pragmas (void)
 {
   c_register_pragma ("GCC", "memregs", m32c_pragma_memregs);
+  c_register_pragma (NULL, "ADDRESS", m32c_pragma_address);
+  c_register_pragma (NULL, "address", m32c_pragma_address);
 }