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4 Commits

Author SHA1 Message Date
Johny Mattsson 7f92bf64be Completely reworked user exception handler. 
Incidentally now also a whole lot faster.
 2016-05-26 15:19:20 +10:00
Johny Mattsson 8bdde6e28d Sorted out linker scripts & options. 
Now boots to Lua prompt, but promptly reboots itself before input.
 2015-10-12 13:26:04 +11:00
Johny Mattsson b0f9788a6d Move constants to ROM. Frees up 16k+ of RAM. 
Accessing 8bit and 16bit constants from ROM rather than RAM comes with a
performance cost, as these loads go through the load/store exception
vector. Any performance critical constants can be forced back into RAM
as RAM_CONST_ATTR.

The entry point has changed from call_user_start() to user_start_trampoline()
in order for the exception handler to be installed early enough.
 2015-06-23 15:41:14 +10:00
Johny Mattsson 0c924e56c6 Support for loading sub-32 wide data from irom. 2015-06-23 15:41:14 +10:00