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5 commits

Author SHA1 Message Date
Laurent Vivier 20b610390d
target/m68k: add explicit single and double precision operations 
Add fssqrt, fdsqrt, fsadd, fdadd, fssub, fdsub, fsmul, fdmul,
fsdiv, fddiv.

The precision is managed using set_floatx80_rounding_precision().

Backports commit a51b6bc38bb9b73a40e9486b52be12c810c6f2d9 from qemu
 2018-03-03 20:55:41 -05:00
Laurent Vivier 0b62df7f30
target/m68k: add fmovecr 
fmovecr moves a floating point constant from the
FPU ROM to a floating point register.

Backports commit 9d403660d91229922c2786e81c23cc9dd8e644f1 from qemu
 2018-03-03 20:51:21 -05:00
Laurent Vivier f7ef6b49a8
target-m68k: add FPCR and FPSR 
Backports commit ba62494483ab51ee31c70952b6ce5171a31860b1 from qemu
 2018-03-03 19:51:31 -05:00
Laurent Vivier 1c6b1e2b9f
target-m68k: use floatx80 internally 
Coldfire uses float64, but 680x0 use floatx80.
This patch introduces the use of floatx80 internally
and enables 680x0 80bits FPU.

Backports commit f83311e4764f1f25a8abdec2b32c64483be1759b from qemu
 2018-03-03 19:35:17 -05:00
Laurent Vivier 409369a7ce
target-m68k: move FPU helpers to fpu_helper.c 
Backports commit c88f8107b14456d514b00571b0675cb532e82cad from qemu
 2018-03-03 15:04:05 -05:00