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Diffstat (limited to 'README.md')
| -rwxr-xr-x | README.md | 18 |
1 files changed, 14 insertions, 4 deletions
@@ -4,9 +4,8 @@ QDMA is a simple MIPS assembler written in Go for [QDME](https://github.com/JacobMcDonnell/QDME), which is my simple MIPS -emulator. Currently this assembler can only handle standard instructions, -which means no sections and no predefined data outside of an I-Type -instruction. +emulator. QDMA implements a partial version of the Executable and Linkable +Format (ELF), [See Partial ELF for more information](#Partial-ELF). ## TODO @@ -14,7 +13,7 @@ instruction. - ~Handle Labels and Jumps~ -- Encode Data Section into Binary +- ~Encode Data Section into Binary~ - ~Ignore Comments~ @@ -62,3 +61,14 @@ Here is a list of supported instructions. |lw |I |rs = imm(rt)| |sw |I |imm(rt) = rs| +## Partial ELF + +QDMA is partiallialy complient with ELF, meaning that it supports segments but +not sections. The supported segments are `.text`, `.data`, `.rodata`, and +`.bss`. `.text` is for the instructions. `.data` and `.rodata` are for defined +data types with initial values, `.rodata` being read only. Supported data types +are `.word` for a 4 byte value, `.half` for a 2 byte value, `.byte` for a byte, +`.asciiz` for a null terminated string, and `.ascii` for a non null terminated +string. `.bss` is for variables where there is no initial value. In this +section you define the space that a variable will take up in bytes using +`.space`. |