From 126b11c6921e3e0b8eb29b60e5bf5b4dd83797d4 Mon Sep 17 00:00:00 2001
From: Chung-Ju Wu <jasonwucj@gmail.com>
Date: Wed, 3 Sep 2014 08:50:14 +0000
Subject: [PATCH] [NDS32] Add a function to indentify if FUNC is an interrupt
 service routine.

	* config/nds32/nds32-isr.c (nds32_isr_function_p): Define new function
	to check if FUNC is an interrupt service routine.
	* config/nds32/nds32-protos.h (nds32_isr_function_p): Declaration.

From-SVN: r214855
---
 gcc/ChangeLog                   |  6 ++++++
 gcc/config/nds32/nds32-isr.c    | 24 ++++++++++++++++++++++++
 gcc/config/nds32/nds32-protos.h |  1 +
 3 files changed, 31 insertions(+)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f9c795dbdc2..aa65d6a890a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,11 @@
 2014-09-03  Chung-Ju Wu  <jasonwucj@gmail.com>
 
+	* config/nds32/nds32-isr.c (nds32_isr_function_p): Define new function
+	to check if FUNC is an interrupt service routine.
+	* config/nds32/nds32-protos.h (nds32_isr_function_p): Declaration.
+
+2014-09-03  Chung-Ju Wu  <jasonwucj@gmail.com>
+
 	* config/nds32/nds32.h (machine_function): Add some fields for variadic
 	arguments implementation.
 
diff --git a/gcc/config/nds32/nds32-isr.c b/gcc/config/nds32/nds32-isr.c
index ef0187c39cf..bb8fcdd7561 100644
--- a/gcc/config/nds32/nds32-isr.c
+++ b/gcc/config/nds32/nds32-isr.c
@@ -574,4 +574,28 @@ nds32_asm_file_end_for_isr (void)
     }
 }
 
+/* Return true if FUNC is a isr function.  */
+bool
+nds32_isr_function_p (tree func)
+{
+  tree t_intr;
+  tree t_excp;
+  tree t_reset;
+
+  tree attrs;
+
+  if (TREE_CODE (func) != FUNCTION_DECL)
+    abort ();
+
+  attrs = DECL_ATTRIBUTES (func);
+
+  t_intr  = lookup_attribute ("interrupt", attrs);
+  t_excp  = lookup_attribute ("exception", attrs);
+  t_reset = lookup_attribute ("reset", attrs);
+
+  return ((t_intr != NULL_TREE)
+	  || (t_excp != NULL_TREE)
+	  || (t_reset != NULL_TREE));
+}
+
 /* ------------------------------------------------------------------------ */
diff --git a/gcc/config/nds32/nds32-protos.h b/gcc/config/nds32/nds32-protos.h
index e2810163ec9..e57674a8311 100644
--- a/gcc/config/nds32/nds32-protos.h
+++ b/gcc/config/nds32/nds32-protos.h
@@ -136,6 +136,7 @@ extern void nds32_check_isr_attrs_conflict (tree, tree);
 extern void nds32_construct_isr_vectors_information (tree, const char *);
 extern void nds32_asm_file_start_for_isr (void);
 extern void nds32_asm_file_end_for_isr (void);
+extern bool nds32_isr_function_p (tree);
 
 /* Auxiliary functions for cost calculation.  */
 
-- 
2.11.4.GIT