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| -rw-r--r-- | subx/Readme.md | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/subx/Readme.md b/subx/Readme.md index 4f6f6c24..d898cde9 100644 --- a/subx/Readme.md +++ b/subx/Readme.md @@ -2,6 +2,17 @@ Bytecode interpreter for a subset of the 32-bit x86 ISA. +* only instructions operating on the 32-bit E*X registers +* assuming a flat address space, completely ignoring segment registers +* ignoring the carry flag; arithmetic operations always operate on signed numbers + (while bitwise operations always operate on unsigned numbers) + +Basically a minimum basis set that a compiler for Mu can target. This isn't +meant to run arbitrary binaries, just those generated by our compiler, +allowing better tests for the compiler, access to processor/memory state +without getting bogged down in details of the ELF format, ABI, STABS debugging +format, etc., etc. + To run tests: ``` |