2020-05-22 05:25:12 +10:00
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anatomy. First, we have constants. Some of them are device-
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2020-06-29 08:49:30 +10:00
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specific, but some of them are always there. SYSVARS is the
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2020-05-22 05:25:12 +10:00
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address at which the RAM starts on the system. System variables
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will go there and HERE will go after it.
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RS_ADDR is where RSP starts and PS_ADDR is where PSP starts.
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RSP and PSP are designed to be contiguous. RSP goes up and PSP
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goes down. If they meet, we know we have a stack overflow.
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Then, we load the assembler and cross compilation unit, which
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will be needed for the task ahead.
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Then, it's a matter of adding layer after layer. For most
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system, all those layers except the drivers will be added the
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same way. Drivers are a bit tricker and machine specific. I
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can't help you there, you'll have to use your wits. (cont.)
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