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24 lines
840 B
Markdown
24 lines
840 B
Markdown
4 years ago
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# Assembly
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Assembly tokenization should be workiung completely. It knows what instructions the CPU implementation supports and parses based on them.
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## Pseudo-ops
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The following pseudo-ops are implemented as of yet:
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* `.space <len>` reverse <len> bytes of zero
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* `.ascii 'text'` put text into memory
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* `.asciiz 'text'` put text into memory (null terminated)
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* `.sextion .<name>` same as `.<name>` see sections:
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## Sections:
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Currently only these three sections are supported:
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* `data` read-write data (non-executable)
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* `rodata` read-only data (non-executable)
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* `.text` executable data (read-only)
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## Allocating stack
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another pseudo-op is recognized: `.stack <len>`. This marks the executable as requesting at least `<len>` bytes of stack.
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If the loader repsects this wish, the sp is initialized pointing to the end of the stack.
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