Why reset at end of function after recovery from data abort (tms570LS04x)?

When checkRAMECC(void) is being called in sys_startup.c (HalCoGen 4.05.02) a data-abort is being generated when testing double bit errors (which is good).

When I try to recover stack in abort handler (code below) the remains of checkRAMECC(void) is being executed but then a reset occurs at end of function.

Why would that be?

I also run in problems when recovering from data-abort in other situations but chose this example as OS is not loaded yet and all code except abort-handler is auto-generated.

Many Thanks - Christian

void vDataAbort( void )
{

	volatile portUInt32Type ulDataFaultStatusReg = 0;
	volatile portUInt32Type ulDataFaultAddressReg = 0;

	ulDataFaultStatusReg = ulGetDataFaultStatusRegister();
	ulDataFaultAddressReg = ulGetDataFaultAddressRegister();

	boolean resume = FALSE;
    
	// determine whether to resume execution
	processAbortError(ulDataFaultStatusReg, ulDataFaultAddressReg, DATA_ABORT, &resume);
	if (resume == FALSE)
	{
		// enter endless loop
		prvAbortLoop();
	}
	else
	{
		// recover callstack
		// from https://e2e.ti.com/support/microcontrollers/hercules/f/312/t/170682
		asm(" ldr r0,[sp,#8]");
		asm(" add r0,r0,#4");
		asm(" str r0,[sp,#8]");
	}
}