mirror of https://github.com/xemu-project/xemu.git
e88a856efd
The documentation says:
SUBV Rm, Rn Rn - Rm -> Rn, underflow -> T
The overflow / underflow can be calculated as:
T = ((Rn ^ Rm) & (Result ^ Rn)) >> 31
However we were using the incorrect:
T = ((Rn ^ Rm) & (Result ^ Rm)) >> 31
Fix by using the Rn register instead of Rm.
Add tests provided by Paul Cercueil.
Cc: qemu-stable@nongnu.org
Fixes:
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|---|---|---|
| .. | ||
| Makefile.target | ||
| test-addv.c | ||
| test-macl.c | ||
| test-macw.c | ||
| test-subv.c | ||