[ARM] Add __builtin_trap support for A32

Co-Authored-By: Mark Mitchell <mark@codesourcery.com>

From-SVN: r205749

gcc/ChangeLog

+2013-12-06  Ian Bolton  <ian.bolton@arm.com>
+	    Mark Mitchell  <mark@codesourcery.com>
+
+	PR target/59091
+	* config/arm/arm.md (trap): New pattern.
+	* config/arm/types.md: Added a type for trap.
+
 2013-12-06  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 
 	* expr.c (expand_assignment): Update bitregion_start and

gcc/config/arm/arm.md

@@ -9927,6 +9927,23 @@
    (set_attr "type" "mov_reg")]
 )
 
+(define_insn "trap"
+  [(trap_if (const_int 1) (const_int 0))]
+  ""
+  "*
+  if (TARGET_ARM)
+    return \".inst\\t0xe7f000f0\";
+  else
+    return \".inst\\t0xdeff\";
+  "
+  [(set (attr "length")
+	(if_then_else (eq_attr "is_thumb" "yes")
+		      (const_int 2)
+		      (const_int 4)))
+   (set_attr "type" "trap")
+   (set_attr "conds" "unconditional")]
+)
+
 
 ;; Patterns to allow combination of arithmetic, cond code and shifts
 

gcc/config/arm/types.md

@@ -152,6 +152,7 @@
 ; store2             store 2 words to memory from arm registers.
 ; store3             store 3 words to memory from arm registers.
 ; store4             store 4 (or more) words to memory from arm registers.
+; trap               cause a trap in the kernel.
 ; udiv               unsigned division.
 ; umaal              unsigned multiply accumulate accumulate long.
 ; umlal              unsigned multiply accumulate long.
@@ -645,6 +646,7 @@
   store2,\
   store3,\
   store4,\
+  trap,\
   udiv,\
   umaal,\
   umlal,\

gcc/testsuite/ChangeLog

+2013-12-06  Ian Bolton  <ian.bolton@arm.com>
+            Mark Mitchell  <mark@codesourcery.com>
+
+	PR target/59091
+	* gcc.target/arm/builtin-trap.c: New test.
+	* gcc.target/arm/thumb-builtin-trap.c: Likewise.
+
 2013-12-06  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gcc.target/sparc/pdistn.c: New test.

gcc/testsuite/gcc.target/arm/builtin-trap.c

+/* { dg-do compile } */
+/* { dg-require-effective-target arm32 } */
+
+void
+trap ()
+{
+  __builtin_trap ();
+}
+
+/* { dg-final { scan-assembler "0xe7f000f0" { target { arm_nothumb } } } } */

gcc/testsuite/gcc.target/arm/thumb-builtin-trap.c

+/* { dg-do compile } */
+/* { dg-options "-mthumb" } */
+/* { dg-require-effective-target arm_thumb1_ok } */
+
+void
+trap ()
+{
+  __builtin_trap ();
+}
+
+/* { dg-final { scan-assembler "0xdeff" } } */