interrupt_thread-1.c, [...]: New.

	* gcc.target/m68k/interrupt_thread-1.c,
	gcc.target/m68k/interrupt_thread-2.c,
	gcc.target/m68k/interrupt_thread-3.c: New.
	* gcc.target/m68k/m68k.exp: Accept fido.

From-SVN: r124804

gcc/testsuite/gcc.target/m68k/interrupt_thread-1.c

+/* { dg-do compile } */
+/* { dg-options "-mcpu=fidoa -O2 -fomit-frame-pointer" } */
+
+/* Check that interrupt_thread attribute works.  */
+
+#ifdef __mfido__
+extern void foo (void) __attribute__ ((interrupt_thread));
+
+int a, b, c, d;
+
+void bar (void);
+
+void
+foo (void)
+{
+  int w, x, y, z;
+
+  w = a;
+  x = b;
+  y = c;
+  z = d;
+
+  bar ();
+
+  a = w;
+  b = x;
+  c = y;
+  d = z;
+}
+#else
+/* If the current mutilib is, say, -mcpu=5485, the compiler gets
+   -mcpu=fidoa -mcpu=5485, where -mcpu=fidoa is overridden.  In that
+   case, we just print out "sleep" in the assembly file and pretend
+   that everything is all right.  */
+asm ("sleep");
+#endif
+
+/* "sleep" should be generated in place of "rts".  */
+/* { dg-final { scan-assembler-times "sleep" 1 } } */
+/* { dg-final { scan-assembler-times "rts" 0 } } */
+
+/* There should be no stack adjustment.  */
+/* { dg-final { scan-assembler-times "sp" 0 } } */

gcc/testsuite/gcc.target/m68k/interrupt_thread-2.c

+/* { dg-do compile } */
+/* { dg-options "-mcpu=fidoa" } */
+
+/* Check that an error is issued for using more than one
+   interrupt_attribute at the same time.  */
+
+/* If the current mutilib is, say, -mcpu=5485, the compiler gets
+   -mcpu=fidoa -mcpu=5485, where -mcpu=fidoa is overridden.  In that
+   case, we just use two interrupt_handler attributes and expect the
+   same error.  */
+#ifdef __mfido___
+#define IH interrupt_thread
+#else
+#define IH interrupt_handler
+#endif
+
+extern void f1 (void) __attribute__((interrupt_handler, interrupt_handler)); /* { dg-error "error: multiple interrupt attributes not allowed" } */
+
+extern void f2 (void) __attribute__((interrupt_handler, IH)); /* { dg-error "error: multiple interrupt attributes not allowed" } */
+
+extern void f3 (void) __attribute__((IH, interrupt_handler)); /* { dg-error "error: multiple interrupt attributes not allowed" } */
+
+extern void f4 (void) __attribute__((IH, IH)); /* { dg-error "error: multiple interrupt attributes not allowed" } */

gcc/testsuite/gcc.target/m68k/interrupt_thread-3.c

+/* { dg-do compile } */
+/* { dg-options "-mcpu=cpu32" } */
+
+/* Check that interrupt_thread is rejected on CPUs other than
+   fido.  */
+
+extern void foo (void) __attribute__((interrupt_thread)); /* { dg-error "error: interrupt_thread is available only on fido" } */