FreeRTOS Ported to RH850

Hi mikisama,
Thank you for sharing!
Recently I was trying the RTOS on the RH850/F1L, and it seems that it is ok.
For the assembly code,
I would like to know what’s the purpose of variable __stack, because I have commented “mov hilo(__stack), sp” in file portasm.s, it seems that system is normal.
BTW, my IDE is GreenHills v7.xx
Thanks!