Found a minor error in sys/epiphany-syscalls.c found here:
The TRAP_write, TRAP_read, etc., trap manifest constant definitions do not match those on page 124 of the Epiphany Architecture Reference rev 14.03.11,found here:
The compiled code in the 2016.11 eSDK appears to support the numbers in the PDF, and thus the compiled NewLib matches the manual. However, anyone reading the code without reference to the manual might be misled.