m68k/fpsp040/skeleton.S

5 |	need to be modified to install the FPSP.
14 |	the machine state will be identical to the state before
18 |	to handle the exception.
22 |	OS specific work to be done (such as handling a context switch or
26 |	code is shown.  This code may need to be moved to an appropriate
83 |	will probably want to clear the pending exception.
88 | Code following the 'inex' label is to handle bug #1232.  In this
92 | and unfl exception to be taken must not have been enabled.  The
93 | fix is to check for E1, and the existence of one of snan, ovfl,
95 | to the appropriate  handler for the exception in the fpsr.  Note
149 | to b1238_fix.
297 |	A 'real' F-line exception is one that the FPSP isn't supposed to
350 |	unable to handle frame sizes not in the following
358 |	Replace this with a call to your kernel panic code or
359 |	code to handle future revisions of the fpu.
370 |	to return to user mode, but there may be OS specific code
371 |	to execute before we do.  If there is, do it now.
387 |	mem_write --- write to user or supervisor address space
389 | Writes to memory while in supervisor mode.  copyout accomplishes
395 |	d0 - number of bytes to write (maximum count is 12)
397 | The supervisor source address is guaranteed to point into the supervisor
399 | process is allowed to sleep as a consequence of a page fault during
433 | The FPSP calls mem_read to read the original F-line instruction in order
434 | to extract the data register number when the 'Dn' addressing mode is
440 |	d0 - number of bytes to read (maximum count is 12)