[参考译文] TMS570LC4357：报告针对被零除的 UNDEF 指令异常

/* USER CODE BEGIN (0) */
/* USER CODE END */

/* Include Files */

#include "HL_sys_common.h"

/* USER CODE BEGIN (1) */
#include <stdio.h>
/* USER CODE END */

/** @fn void main(void)
*   @brief Application main function
*   @note This function is empty by default.
*
*   This function is called after startup.
*   The user can use this function to implement the application.
*/

/* USER CODE BEGIN (2) */
#pragma diag_push
#pragma diag_suppress 994 /* missing return statement at end of non-void function */
uint32_t get_fpscr (void)
{
    asm volatile (" VMRS r0, FPSCR");
}
#pragma diag_pop
/* USER CODE END */

int main(void)
{
/* USER CODE BEGIN (3) */
    const volatile double a = 1023.4567;
    const volatile double b = 0.0;
    const volatile uint32_t fpscr_before = get_fpscr ();
    const volatile double c = a / b;
    const volatile uint32_t fpscr_after = get_fpscr ();

    printf ("%g/%g=%g\n", a, b, c);
    printf ("FPSCR before=0x%08x after=0x%08x\n", fpscr_before, fpscr_after);
/* USER CODE END */

    return 0;
}

[CortexR5] 1023.46/0=+inf
FPSCR before=0x00000000 after=0x00000002