1.1 KiB
1.1 KiB
twasm
this will be a self hosted, very minimal subset of 64 bit asm
goals
I want to compile Bootler and Twasm with the Twasm assembler
memory map
+------ 0x00100000 ------+
| hardware, bios stuff |
+------ 0x00080000 ------+
| output binary |
+------ 0x00070000 ------+
| token table |
+------ 0x00060000 ------+
| stack (rsp) |
+------------------------+
| input |
+------------------------+ this is lined up to a sector
| | and this is less than a sector
+------------------------+
| assembler |
+------ 0x00010000 ------+
| bootloader, bios, etc. |
+------------------------+
each word represents a token on the token table.
token table (TT)
each token gets loaded into the token table with the following form:
+----------+-----------------------+
| 31 16 | 15 0 |
+----------+-----------------------+
| reserved | token id |
+----------+-----------------------+
token IDs
supported tokens are listed below
| token | id | notes |
|---|---|---|
| 0xFFFF | unrecognised token |