17 Converting DOS Programs/Libraries to DJGPP

If you have a program or a library developed under some other DOS-based compiler, which you want to port to DJGPP, read this chapter.

• Syntax: The AT&T syntax of Gas is different from Intel's.
• Converting ASM: Conversion tools between the two syntaxes.
• ASM GPF: When converted assembly code crashes.
• ASM and C: Rules for assembly code called from C.
• OBJ and LIB: You can't use them with GCC...
• 16-bit code: ...or can you?
• NEAR and FAR: How to convert NEAR and FAR to DJGPP.
• Pseudo-registers: Converting pseudo-registers to DJGPP.