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Hello, I'm looking to create a simple kernel for the Amd64 and want to make a boot loader to start with. I have followed the instructions provided here, http://www.nondot.org/sabre/os/files/Booting/CompilingBinaryFilesUsingACompi ler.pdf. I created a small program, t1.c: int main(int argc, char *argv[]) { int i; int j; for(i=0; i < 1000; i++) { j += 1; } return j; } When I compile this using a cross compiler created using Kegel's crosstool (http://kegel.com/crosstool/) using the following: gcc -c -o t1.o t1.c ld -Ttext 0x0 -e main -o t1 t1.o objcopy -R .note -R .comment -S -O binary t1 t1.bin The result is: t1.o 1256 bytes t1 1049835 bytes t1.bin 1048680 bytes When I compile it with gcc 3.3.2 (Debian) using the same options gcc -c -o t1.o t1.c ld -Ttext 0x0 -e main -o t1 t1.o objcopy -R .note -R .comment -S -O binary t1 t1.bin The result is: t1.o 699 bytes t1 4791 bytes t1.bin 51 bytes Sooooo, the 1M file is a mite big, any ideas what I'm doing wrong? Thanks, Wink ------ Want more information? See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/ Want to unsubscribe? Send a note to crossgcc-unsubscribe@sources.redhat.com
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