freebsd-dev/sys/i386
David E. O'Brien dfe41fc832 Fix clobbers so that GENERIC may compile with GCC 2.95.2.
Historically, the documentation of extended asm was lacking, namely you
should NOT specify the same register as an input, and a clobber.
If the register is clobbered, it should be specified as an output as well,
e.g., by linking input and output through the "number" notation.
(Beware of lvalues, some local variables needed...)

URL:http://egcs.cygnus.com/faq.html

In versions up to egcs-1.1.1, the compiler did not even warn about it,
but it was liable to output bad code. Newer egcs are pickier and simply
refuse to swallow such code.

Note, since *addr changes, it needs to be an output operand.
We might be excessive in saying that all memory has changed.

Obtained from:	OpenBSD
		w/extra thanks to Marc Espie <Marc.Espie@liafa.jussieu.fr>
1999-11-14 03:36:34 +00:00
..
apm Use DRIVER_MODULE(), apm.c already takes care of it's devices with 1999-11-08 07:44:26 +00:00
bios Use DRIVER_MODULE(), apm.c already takes care of it's devices with 1999-11-08 07:44:26 +00:00
boot GC bdbtofsb() 1999-09-26 19:05:39 +00:00
conf Cosmetic change: correct formatting error in my previous commit. 1999-11-09 00:39:55 +00:00
eisa Delete unneeded #include 1999-10-11 14:42:33 +00:00
i386 Change the type of sf_addr in struct {o}sigframe from char* to 1999-11-12 11:21:34 +00:00
ibcs2 useracc() the prequel: 1999-10-29 18:09:36 +00:00
include Fix clobbers so that GENERIC may compile with GCC 2.95.2. 1999-11-14 03:36:34 +00:00
isa Move isfoo() and friends to the newly created sys/ctype.h. 1999-11-03 17:54:26 +00:00
linux simplify check for device. 1999-11-08 09:59:17 +00:00
pci Add text for the AMD-751 host-to-PCI and PCI-to-PCI (AGP) bridges. 1999-10-25 06:28:04 +00:00
svr4 useracc() the prequel: 1999-10-29 18:09:36 +00:00
Makefile $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00