Add more robust fpu test

gsilvis / silvos

half-baked Silvis OS kernel

MIT License

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Add more robust fpu test #31

Closed allanlw closed 7 years ago

allanlw commented 7 years ago

This improves the FPU testing.

By popular demand, it makes it faster.
It now more correctly generates 387 code (this is the point of the out and wrapper functions)
It checks that the FPU and MMX registers are persisted across syscalls and forks.

unfortunately, the test currently fails due to an unknown bug (either in the test or the kernel). Strangely, commenting out the "int" lines (so as to not perform the fork) does NOT fail.

allanlw commented 7 years ago

BTW, the current output.txt for me is:

THREAD 0x01: Y
THREAD 0x02: Y
THREAD 0x01: Y
THREAD 0x03: �
THREAD 0x01: Y
THREAD 0x04: Y
THREAD 0x01: Y
THREAD 0x05:
THREAD 0x01: Y
THREAD 0x01: Y
THREAD 0x01: Y
THREAD 0x01: Y
THREAD 0x01: Y
THREAD 0x01: Y
THREAD 0x01: Y
THREAD 0x01: Y
Kernel: THREAD 0x01 page fault at 0x0000000000000008