BSD 2.11 - man page for checkobj (bsd section 1)
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checkobj - check an object file to see whether it can be executed
checkobj [ -s ] [ -f ] [ -40 ] [ file ... ]
Checkobj attempts to determine whether the named files are valid executable binary files.
It checks for size restrictions, including those due to the granularity of memory manage-
ment on the PDP11. It is especially useful for overlaid object files, where there are a
number of constraints. If a file is too large or improperly laid out, checkobj attempts
to point out format changes that would allow the program to run.
Several options control the checks:
-s Check for the use of separate I/D. If the file is separate executable, an error is
flagged, and an appropriate way to load for a nonseparate machine is suggested if
-f Check for the use of floating point arithmetic without inclusion of the floating-
-40 Combine the -s and -f options, to check for suitability for an 11/40-class PDP11.
The test for floating point is simple-minded. It is based on the definition of
``fltused'' by the C compiler and ``fptrap'' in the floating-point simulator. This test
does not work if the object has been stripped.
The exit status is 0 if all named files are runnable with the specified options, nonzero
Mike Karels, University of California, Berkeley
3rd Berkeley Distribution CHECKOBJ(1)
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