a two-pass assembler implementation in ansi c that processes assembly language files.
- project specifications (pdf file in this directory)
- complete assembler source code
- makefile for building
the assembler processes .as files through these stages:
preprocessor - handles macro definitions and expansions, creates .am files
first pass - builds symbol table, assigns addresses to labels, validates syntax
second pass - resolves symbol references, generates machine code, produces output files
happiness 馃槆 or sadness 馃槶
make
./assembler filename1 filename2 ... # files must be in .as format- .am - trimmed file with macros expanded
- .ob - object file with machine code
- .ent - entry symbols
- .ext - external symbols
- 256 words max memory
- 10-bit words
- instructions start at address 100
- data follows code section
key files:
- assembler.c/h - main driver
- preprocessor.c/h - macro handling
- first_pass.c/h - symbol table construction
- second_pass.c/h - code generation
- symbol_table.c/h - symbol management
- instruction_image.c/h - instruction encoding
- data_image.c/h - data directive handling