[SCM] GNU Mach branch, master, updated. v1.6-53-g5396260

[Samuel Thibault]

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- Log -----------------------------------------------------------------
commit 539626070dd9b9b1e2d89874ab84cdb02031c2a0
Author: Samuel Thibault <address@hidden>
Date:   Sun Mar 6 13:11:42 2016 +0100

    Inherit fpu control word from parent to child
    
    * i386/i386/thread.h (struct pcb): Add init_control field.
    * i386/i386/fpu.h (fpinherit): New prototype.
    * i386/i386/fpu.c (fpinit): Add thread parameter. When init_control field is
    set, use that value instead of a hardcoded one.
    (fpinherit): New function.
    (fp_load): Pass thread parameter to fpinit().
    * kern/thread.c (thread_create): Pass parent task to pcb_init().
    * i386/i386/pcb.c (pcb_init): Add parent_task parameter, call fpinherit when
    it is equal to current_task().

-----------------------------------------------------------------------

Summary of changes:
 i386/i386/fpu.c    |   49 +++++++++++++++++++++++++++++++++++++------------
 i386/i386/fpu.h    |    1 +
 i386/i386/pcb.c    |    7 ++++++-
 i386/i386/pcb.h    |    2 +-
 i386/i386/thread.h |    1 +
 kern/thread.c      |    2 +-
 6 files changed, 47 insertions(+), 15 deletions(-)


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