Re: IA32: printing FP register variables

[Michael Meissner <meissner@cygnus.com>]

| I'm sorry, Ben, but I'm still confused about how you find the FP
| register containing a variable.  I think there's a fundamental,
| difficult problem here which you don't seem to be mentioning at all.
| Perhaps you have solved it already, and assume we have too.
| 
| In code generated by your compiler, is the value of TOP (the three-bit
| FPU stack pointer) at function entry known at compile time?  Or does
| its value depend on the caller, and the caller's caller, etc.?

Yes, IIRC the IA32 abi explicitly requires the FP stack to be empty at the time
of a call.  Otherwise, you couldn't write any code using it all, since the
stack might be full and any value pushed would result in an exception.