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A mini assembler for fun

minias A mini assembler for x86_64, written for fun and learning. Goals: A simple, tiny, fast implementation (in that order). Assemble the output of c
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Category: C/C++ / Miscellaneous
Watchers: 2
Star: 17
Fork: 3
Last update: Oct 13, 2021
Resource links
https://github.com/andrewchambers/minias

minias

A mini assembler for x86_64, written for fun and learning.

Goals:

  • A simple, tiny, fast implementation (in that order).
  • Assemble the output of cproc/qbe and chibicc.
  • Relocatable elf output.

Non Goals:

  • Assemble every assembly instruction.
  • Assemble other architectures.
  • Work as a library.

Building

make

or

leg asm.peg > asm.peg.inc
cc -O2 *.c -o minias

Resources

0 Open More issues
Closed

Add Makefile

null

opened Oct 10, 2021 by michaelforney 1
Closed

Implement the .set directive.

Symbols now can be defined relative to other symbols and we need to handle that recursively.

opened Oct 23, 2021 by andrewchambers 0
Closed

Limit length of octal escape in string

Octal escapes must be 1-3 characters long. strtoul will read as many as possible, so do the conversion ourselves to limit it to at most 3.

opened Oct 20, 2021 by michaelforney 0
Closed

Use smaller encodings in a few more cases.

None of these are bugs, but they showed up when comparing disassembly between gas and minias.

I'm less confident about the imul change than the other two. Please double-check that it looks correct to you.

opened Oct 19, 2021 by michaelforney 0
Closed

Properly size small immediates.

null

opened Oct 19, 2021 by andrewchambers 0
Closed

Refactor prefix handling.

null

opened Oct 11, 2021 by andrewchambers 0

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