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47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
Minimal OS
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This shows some of the stuff that any guest OS will have to set up.
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This includes:
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* installing a virtual exception table
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* handling virtual exceptions
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* handling asynchronous events
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* enabling/disabling async events
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* parsing start_info struct at start-of-day
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* registering virtual interrupt handlers (for timer interrupts)
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* a simple page and memory allocator
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* minimal libc support
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* minimal Copy-on-Write support
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* network, block, framebuffer support
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* transparent access to FileSystem exports (see tools/fs-back)
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- to build it just type make.
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- to build it with TCP/IP support, download LWIP 1.3 source code and type
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make LWIPDIR=/path/to/lwip/source
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- to build it with much better libc support, see the stubdom/ directory
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- to start it do the following in domain0 (assuming xend is running)
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# xm create domain_config
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This starts the kernel and prints out a bunch of stuff and then once every
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second the system time.
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If you have setup a disk in the config file (e.g.
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disk = [ 'file:/tmp/foo,hda,r' ] ), it will loop reading it. If that disk is
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writable (e.g. disk = [ 'file:/tmp/foo,hda,w' ] ), it will write data patterns
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and re-read them.
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If you have setup a network in the config file (e.g. vif = [''] ), it will
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print incoming packets.
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If you have setup a VFB in the config file (e.g. vfb = ['type=sdl'] ), it will
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show a mouse with which you can draw color squares.
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If you have compiled it with TCP/IP support, it will run a daytime server on
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TCP port 13.
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