On Fri, 5 Nov 1999, David O'Brien wrote:
> The current show stopper for switching over to GCC 2.95.2 is a problem
> compiling the `ahc' driver:
>
> cc -c -O -pipe -Wall -Wredundant-decls -Wnested-externs
> -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline
> -Wcast-qual -fformat-extensions -ansi -nostdinc -I- -I. -I../..
> -I../../../include -DKERNEL -include opt_global.h -elf
> ../../dev/aic7xxx/aic7xxx.c
> ../../dev/aic7xxx/aic7xxx.c: In function `ahc_download_instr':
> machine/bus.h:584: Invalid `asm' statement:
> machine/bus.h:584: fixed or forbidden register 2 (cx) was spilled for class CREG.
> *** Error code 1
The asm statement is broken. The clobber list shouldn't include any
registers that are explicitly allocated as operands. See rev.1.85 of
<machine/cpufunc.h> where this bug was fixed for several functions
that used to have it there. Many functions in <machine/bus.h> have the
same bug.
> The message is misleading, as the problematic header is
> /sys/i386/include/bus.h not, /usr/include/machine/bus.h.
It's actually machine/bus.h, where "machine" is the symlink to
../../i386/include in the compile directory. This is correct.
Bruce
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