git: kernel - make bcmp linux-compatible, add memcmp world - make bcmp linux-compatible

[Matthew Dillon]

commit 83d15e579c5b3b6ab775b345f1d680697cca01ac
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Wed Mar 27 23:45:38 2019 -0700

    kernel - make bcmp linux-compatible, add memcmp
    world  - make bcmp linux-compatible
    
    * Make bcmp and memcmp the same.  Our bcmp() was returning
      0 or 1 (not subtracting the last byte), which is compatible
      with the manual page but it isn't what linux does.
    
    * It also looks like memcmp is sometimes turned into bcmp by
      the compiler (?), at least when compiling the kernel, so
      we don't want to break that either.
    
    * Add memcmp to the kernel build, synchronize both memcmp and bcmp
      from libc.
    
    * This makes our bcmp compatible with linux.

Summary of changes:
 lib/libc/x86_64/string/bcmp.S                      | 24 ++--------------------
 lib/libc/x86_64/string/memcmp.S                    |  8 ++++++++
 sys/platform/pc64/conf/files                       |  2 ++
 .../Copyright => sys/platform/pc64/x86_64/bcmp.s   |  6 +++++-
 .../memcmp.S => sys/platform/pc64/x86_64/memcmp.s  | 18 +++++++++++++---
 sys/platform/pc64/x86_64/support.s                 | 21 -------------------
 6 files changed, 32 insertions(+), 47 deletions(-)
 copy contrib/tcsh-6/Copyright => sys/platform/pc64/x86_64/bcmp.s (89%)
 copy lib/libc/x86_64/string/memcmp.S => sys/platform/pc64/x86_64/memcmp.s (84%)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/83d15e579c5b3b6ab775b345f1d680697cca01ac


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