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