delta/syslinux.git/com32/include/sys/bitops.h, branch syslinux-4.04 git.kernel.org: pub/scm/boot/syslinux/syslinux.git com32, bitops: proper constraint for byte-sized output 2011-04-04T23:43:10+00:00 H. Peter Anvin hpa@zytor.com 2011-04-04T23:43:10+00:00 0c527252d94c5fc54e637143ec9fdb36ac698c62 The proper output for the byte-sized output of "setc" is "=qm". Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
The proper output for the byte-sized output of "setc" is "=qm".

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
com32, bitops: an "m" constraint takes an object, not a pointer to one 2011-04-04T17:37:24+00:00 H. Peter Anvin hpa@zytor.com 2011-04-04T17:36:12+00:00 47158504d44a151c61461ba1acdef5b4240bdc30 The argument to an "m" constraint is an object, not a pointer to an object. For a void pointer it needs to be cast to an indirectable type (like char) and then indirected. Reported-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
The argument to an "m" constraint is an object, not a pointer to an
object.  For a void pointer it needs to be cast to an indirectable
type (like char) and then indirected.

Reported-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
bitops: the bt instructions returns result in CF, not ZF 2011-04-04T17:00:25+00:00 H. Peter Anvin hpa@zytor.com 2011-04-04T16:58:44+00:00 af97187d32aa51d5109af813187b98081e7d7b2f The bit test instructions returns the tested bit in CF, not the inverse of the tested bit in ZF. I don't know how I got that idea... Reported-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
The bit test instructions returns the tested bit in CF, not the
inverse of the tested bit in ZF.  I don't know how I got that idea...

Reported-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
com32: add a centralized bitops header 2010-11-14T21:09:48+00:00 H. Peter Anvin hpa@zytor.com 2010-11-14T21:09:48+00:00 db74cf6c4182f40ecf7fad1f04799d09d82f896d Add a centralized bitops header <sys/bitops.h> which uses x86 bitops instructions. This is necessary to keep gcc 4.5 from aborting compilation due to the inlined code being larger than the non-inlined version, and well, we should really use the bitops. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Add a centralized bitops header <sys/bitops.h> which uses x86 bitops
instructions.  This is necessary to keep gcc 4.5 from aborting
compilation due to the inlined code being larger than the non-inlined
version, and well, we should really use the bitops.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>