diff options
Diffstat (limited to 'engines/sci/engine/vm_types.cpp')
| -rw-r--r-- | engines/sci/engine/vm_types.cpp | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/engines/sci/engine/vm_types.cpp b/engines/sci/engine/vm_types.cpp index 5327dd1a2e..00b55c64b3 100644 --- a/engines/sci/engine/vm_types.cpp +++ b/engines/sci/engine/vm_types.cpp @@ -28,6 +28,43 @@ namespace Sci { +SegmentId reg_t::getSegment() const { + if (getSciVersion() <= SCI_VERSION_2_1) { + return _segment; + } else { + // Return the lower 14 bits of the segment + return (_segment & 0x3FFF); + } +} + +void reg_t::setSegment(SegmentId segment) { + if (getSciVersion() <= SCI_VERSION_2_1) { + _segment = segment; + } else { + // Set the lower 14 bits of the segment, and preserve the upper 2 ones for the offset + _segment = (_segment & 0xC000) | (segment & 0x3FFF); + } +} + +uint32 reg_t::getOffset() const { + if (getSciVersion() <= SCI_VERSION_2_1) { + return _offset; + } else { + // Return the lower 16 bits from the offset, and the 17th and 18th bits from the segment + return ((_segment & 0xC000) << 2) | _offset; + } +} + +void reg_t::setOffset(uint32 offset) { + if (getSciVersion() <= SCI_VERSION_2_1) { + _offset = offset; + } else { + // Store the lower 16 bits in the offset, and the 17th and 18th bits in the segment + _offset = offset & 0xFFFF; + _segment = ((offset & 0x30000) >> 2) | (_segment & 0x3FFF); + } +} + reg_t reg_t::lookForWorkaround(const reg_t right, const char *operation) const { SciTrackOriginReply originReply; SciWorkaroundSolution solution = trackOriginAndFindWorkaround(0, arithmeticWorkarounds, &originReply); |