Gary Jennejohn wrote:
>
> >Mmmm... O'Brien, could you make sure the space-critical code in
> >sys/boot compiles ok?
>
> I still have GCC 2.95.2 installed. This is what I get in /sys/boot:
>
> ===> i386/boot2
> (cd /usr/src/sys/boot/i386/boot2; m4 -DFLAGS=0 boot1.m4 boot1.s) | as -o boot1.o
> ld -nostdlib -static -N -e start -Ttext 0x7c00 -o boot1.out boot1.o
> objcopy -S -O binary boot1.out boot1
> dd if=/dev/zero of=boot2.ldr bs=512 count=1 2>/dev/null
> cc -elf -I/usr/src/sys/boot/i386/boot2/../btx/lib -I. -fno-builtin -Os
>-malign-functions=0 -malign-jumps=0 -malign-loops=0 -mrtd
> -Wall -Waggregate-return -Wbad-function-cast -Wcast-align -Wmissing-declarations
>-Wmissing-prototypes -Wnested-externs
> -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings -c boot2.c
> (cd /usr/src/sys/boot/i386/boot2; m4 -DSIOPRT=0x3f8 -DSIOFMT=0x3 -DSIOSPD=9600
>sio.s) | as -o sio.o
> ld -nostdlib -static -N -Ttext 0x1000 -o boot2.out
>/usr/src/sys/boot/i386/boot2/../btx/lib/crt0.o boot2.o sio.o
> objcopy -S -O binary boot2.out boot2.bin
> btxld -v -E 0x1000 -f bin -b /usr/src/sys/boot/i386/boot2/../btx/btx/btx -l
>boot2.ldr -o boot2.ld -P 1 boot2.bin
> kernel: ver=1.01 size=700 load=9000 entry=9010 map=16M pgctl=1:1
> client: fmt=bin size=15c0 text=0 data=0 bss=0 entry=0
> output: fmt=bin size=1ec0 text=200 data=1cc0 org=0 entry=0
> -192 bytes available
> ^^^^^^^^^^^^^^^^^^^^
Well, the flags seem correct (in particular -Os). It would be
interesting to see what's the difference in the assembler code
generated by both. Unfortunately, I cannot upgrade my system for the
time being.
--
Daniel C. Sobral (8-DCS)
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