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Improves carry/extend for ROXL and ROXR.

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Thomas Harte
2019-05-06 21:14:16 -04:00
parent a131d39451
commit d8ed8b66f3
2 changed files with 3 additions and 3 deletions
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4
Processors/68000/Implementation/68000Implementation.hpp
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@@ -1654,7 +1654,7 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
(value << shift_count) | \ (value << shift_count) | \
(value >> (size + 1 - shift_count)) | \ (value >> (size + 1 - shift_count)) | \
((extend_flag_ ? (1 << (size - 1)) : 0) >> (size - shift_count)); \ ((extend_flag_ ? (1 << (size - 1)) : 0) >> (size - shift_count)); \
carry_flag_ = extend_flag_ = destination & 1; \ carry_flag_ = extend_flag_ = (value >> (size - shift_count))&1; \
} \ } \
\ \
set_neg_zero_overflow(destination, 1 << (size - 1)); \ set_neg_zero_overflow(destination, 1 << (size - 1)); \
@@ -1683,7 +1683,7 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
(value >> shift_count) | \ (value >> shift_count) | \
(value << (size + 1 - shift_count)) | \ (value << (size + 1 - shift_count)) | \
((extend_flag_ ? 1 : 0) << (size - shift_count)); \ ((extend_flag_ ? 1 : 0) << (size - shift_count)); \
carry_flag_ = extend_flag_ = destination & 1; \ carry_flag_ = extend_flag_ = value & (1 << shift_count); \
} \ } \
\ \
set_neg_zero_overflow(destination, 1 << (size - 1)); \ set_neg_zero_overflow(destination, 1 << (size - 1)); \