cvs commit: src/sys/i386/i386 in_cksum.c src/sys/i386/include in_cksum.h

[Bjoern A. Zeeb]

bz          2007-10-20 22:18:42 UTC

  FreeBSD src repository

  Modified files:
    sys/i386/i386        in_cksum.c 
    sys/i386/include     in_cksum.h 
  Log:
  Fold multiple asm statements into one so that the compiler at a certain
  optimization level (-march=pentium-mmx for example) does not insert
  intermediate ops which would trash the carry.
  
  Change both sys/i386/i386/in_cksum.c[1] and sys/i386/include/in_cksum.h.
  
  To my best understanding the same problem was addressed in rev. 1.16
  of src/sys/i386/include/in_cksum.h for just a single function 3y ago.
  
  Reviewed by:  jhb
  Submitted by: Zhouyi ZHOU <zhouzhouyi FreeBSD.org> (intial version of [1])
  MFC after:    5 days
  PR:           115678, 69257
  
  Revision  Changes    Path
  1.29      +77 -43    src/sys/i386/i386/in_cksum.c
  1.18      +14 -7     src/sys/i386/include/in_cksum.h