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- Implemented support for the SIB addressing mode into
the assembler.
SIB is short for "Scale Index, and Base", and works
much like x86's version of SIB (scale*index+base),
although my version supports any scale value between
1, and 256.
- Redid the line shifting routine in SuBEditor.
It now uses memcpy, and memset to do that, and also
supports shifting the line left, or right by any
number of characters.
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This is because the previous commit actually created
a bug, rather than fixing one.
- Added JMP, and JSR to the ortho extension, and
implemented them both in the assembler, and
emulator.
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- Started work on implementing the Super VIA emulation.
- Added support for disabling disassembly per
instruction, when in debug mode.
- Did some more work on rewriting the SuB Suite to
work with the new calling convention.
- Rewrote the symbol handling code in the emulator's
assembler, to make it both simpler, and to add
support for arbitrarily deep symbol scopes.
- Added support for arbitrarily deep local symbol
scopes.
For example, to declare a symbol of depth 2, you add
two '@' characters to the start of the symbol name.
In other words, the number of '@' characters before
the symbol name is what determines the scope of that
symbol.
And to use a symbol thats outside the current
scope, you would use the same syntax as using a
struct member, so you would do `global.local`.
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assembler.
The main thing I had to do was implement the parsing
of the condition code token, but that wasn't hard to
do, since I had already done the lexing part already.
The next thing to do, will be to design a calling
convention for Sux.
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both the assembler, and the emulator.
I finally figured out how I could get support for the
Ortho extension implemented into the old assembler.
The only reason for doing this, is to buy me some
while I start work on the new assembler, and to help
me get an idea for how to do the same in the new
assembler.
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