forked from Imagelibrary/rtems
* cpu_asm.S: Added support for the debug exception vector, cleaned up the exception processing & exception return stuff. Re-added EPC in the task context structure so the gdb stub will know where a thread is executing. Should've left it there in the first place... * idtcpu.h: Added support for the debug exception vector. * cpu.c: Added ___exceptionTaskStack to hold a pointer to the stack frame in an interrupt so context switch code can get the userspace EPC when scheduling. * rtems/score/cpu.h: Re-added EPC to the task context.