Do we need to do anything special to mask MMX/FP exceptions under X32?
I'm working on an X32 port due to some reports from a Debian maintainer.
I'm catching a bus error on an 'emms' instruction, which clears state
for the next set of MMX/FP operations:
0x005520fd <+3885>: pop %rsp
0x005520fe <+3886>: emms
=> 0x00552100 <+3888>: pop %rbx
0x00552101 <+3889>: jmpq 0x5519e3
<Tiger::Transform(unsigned long long*, unsigned long long
0x00552106 <+3894>: nopw %cs:0x0(%rax,%rax,1)
Here's the MMX/FP status register:
mxcsr 0x1f80 [ IM DM ZM OM UM PM ]
The same code (some hand waiving) works fine under X86 and X64 assembler.
Does anything special need to be done under X32? Do we need to mask a
different set of MMX/FP exceptions under X32?
Or any other thoughts?
Thanks in advance,