SectorC: A C Compiler in 512 bytes (xorvoid.com)

Article summary

The article presents SectorC, a C compiler written in x86-16 assembly that fits within a 512-byte boot sector. It supports a subset of C, including global variables, functions, and operators, and can compile programs that interact with the x86-16 hardware. The compiler uses a minimalist lexer and parser, and employs various optimization techniques to fit within the 512-byte limit. The article also discusses the potential for using SectorC as a starting point for bootstrapping more advanced compilers.

Main themes

• Minimalist compiler design
• Bootstrapping compilers
• Embedded systems
• Resource-constrained programming
• Programming language design
• Compiler optimization techniques

What commenters say

• Some commenters suggest using SectorC as a starting point for bootstrapping more advanced compilers, such as TCC or GCC.
• Others discuss the potential applications of SectorC in embedded systems or other resource-constrained environments.
• The lack of support for structs in SectorC is seen as a significant limitation by some commenters.
• There is disagreement about the usefulness of SectorC, with some seeing it as a interesting proof-of-concept and others questioning its practical applications.
• Some commenters draw parallels between SectorC and other minimalist programming languages or compilers, such as Small-C or the C Star language.
• The use of atoi as a hash function is seen as a clever hack by some, but others might view it as a potential source of problems due to hash collisions.
• The potential for using SectorC in conjunction with other tools, such as a Linux from scratch-style build process, is also discussed.