Subversion Repositories openrisc

/* Test epilogue of a realigned interrupt handler. */

/* { dg-do run } */

/* { dg-options "-mthumb -Os" } */

/* { dg-skip-if "" { ! { arm_thumb1_ok || arm_thumb2_ok } } } */

/* { dg-require-effective-target arm_cortex_m } */

/* { dg-require-effective-target arm_eabi } */

extern __attribute__((noreturn)) void abort(void);

extern int snprintf(char *, int, const char *, ...);

#define BUFF_LEN 256

char buff[BUFF_LEN];

char *get_buffer(void)

{

        return buff;

}

void __attribute__((interrupt)) foo(void)

{

        char *msg = get_buffer();

        snprintf(msg, BUFF_LEN, "%d %p", 1, buff+BUFF_LEN);

}

volatile void * save_sp;

int main()

{

        register volatile void * sp asm("sp");

        /* Check stack pointer before/after calling the interrupt

         * handler. Not equal means that handler doesn't restore

         * stack correctly.  */

        save_sp = sp;

        foo();

        /* Abort here instead of return non-zero. Due to wrong sp, lr value,

         * returning from main may not work.  */

        if (save_sp != sp)

        {

                sp = save_sp;

                abort();

        }

        return 0;

}