Hi, I will send a set of 5 patches aimed to ease the transition to other C compiler. The compilers considered are open-watcom and ia16-unknown-elks-gcc. This is not a port to use another compiler, BCC is still the only compiler able to produce the kernel image. Even if a file is compiled without errors, there are issues such as calling function conventions, register usage and naming conventions in assembly code that were not solved. Now, the alternative compilers can compile all C files in the source tree with only a few warnings, provided that inline assembly is not used. The compilers detected several cases of code that never executes, and deleting this code reduces code size. The largest roadblocks for using other compiler are the assembly code and the inline assembly facility in BCC. I did some changes aimed to have "only C" files and "only assembly" files. The few files with mixed languages have C functions without inline assembly or complete assembly functions. I also did changes to eliminate some assembly code. After the modifications, code size was reduced in 240 bytes, data reduced in 16 bytes and bss increased in 4 bytes. Patches should be applied in the correct order: starting with elks-3t.patch and ending with elks-3x.patch All kernel Images builded without errors using BCC. Every kernel was tested with QEMU and PCE emulators. Also in a PPro pc booting from floppy. Greetings, Juan -- To unsubscribe from this list: send the line "unsubscribe linux-8086" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
