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3 commits

Author SHA1 Message Date
George Koehler 25e159c930 Remove bad overflow check from plat/osx/libsys/brk.c 
If I want to check for overflow, then I should check it before I do
base + incr, not after.

Now that I have no check, I am passing the overflowed base + incr to
brk1(), where it will probably fail the nbreak < segment check.
 2016-12-03 17:07:51 -05:00
George Koehler ed7fb69f79 Add the missing return in plat/osx/libsys/creat.c 
Before now, it might have worked by accident if the return value from
open() stayed in the function return area.
 2016-11-08 15:35:02 -05:00
George Koehler 02fb480217 Commit a preview of osx386 and osxppc as new platforms. 
These produce Mach-o executables for Mac OS X on Intel or PowerPC
processors.  Our code generator for PowerPC (mach/powerpc) still has
bugs.  Some examples seem to run, but startrek crashes.  Our code
generator for Intel (mach/i386) is better.

There is a problem with job control.  If you run paranoia or startrek,
then suspend the job (^Z) and resume it ('fg' in bash), then read(2)
might fail with EINTR.

The larger files in this commit are
 - plat/osx/cvmach/cvmach.c
 - plat/osx/libsys/brk.c
 - plat/osx386/libsys/sigaction.s
 - plat/osxppc/libsys/sigaction.s
 2016-10-02 14:58:05 -04:00