1 extern void abort ();
2 extern void exit (int);
3
4 #ifndef __thumb__
5 /* There used to be a couple of bugs in the ARM's prologue and epilogue
6 generation for ISR routines. The wrong epilogue instruction would be
7 generated to restore the IP register if it had to be pushed onto the
8 stack, and the wrong offset was being computed for local variables if
9 r0 - r3 had to be saved. This tests for both of these cases. */
10
11 int z = 9;
12
13 int
bar(void)14 bar (void)
15 {
16 return z;
17 }
18
19 int
foo(int a,int b,int c,int d,int e,int f,int g,int h)20 foo (int a, int b, int c, int d, int e, int f, int g, int h)
21 {
22 volatile int i = (a + b) - (g + h) + bar ();
23 volatile int j = (e + f) - (c + d);
24
25 return a + b + c + d + e + f + g + h + i + j;
26 }
27
28 int foo1 (int a, int b, int c, int d, int e, int f, int g, int h) __attribute__ ((interrupt ("IRQ")));
29
30 int
foo1(int a,int b,int c,int d,int e,int f,int g,int h)31 foo1 (int a, int b, int c, int d, int e, int f, int g, int h)
32 {
33 volatile int i = (a + b) - (g + h) + bar ();
34 volatile int j = (e + f) - (c + d);
35
36 return a + b + c + d + e + f + g + h + i + j;
37 }
38 #endif
39
40 int
main(void)41 main (void)
42 {
43 #ifndef __thumb__
44 if (foo (1, 2, 3, 4, 5, 6, 7, 8) != 32)
45 abort ();
46
47 if (foo1 (1, 2, 3, 4, 5, 6, 7, 8) != 32)
48 abort ();
49 #endif
50 exit (0);
51 }
52