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Take si/di confusion and offset length off the table.
Now 74 failures of 288 tests.
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@ -38,7 +38,7 @@ std::string to_hex(int value, int digits) {
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};
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template <typename InstructionT>
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std::string to_string(InstructionSet::x86::DataPointer pointer, const InstructionT &instruction, bool abbreviateOffset) {
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std::string to_string(InstructionSet::x86::DataPointer pointer, const InstructionT &instruction, int offset_length) {
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std::string operand;
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using Source = InstructionSet::x86::Source;
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@ -91,12 +91,21 @@ std::string to_string(InstructionSet::x86::DataPointer pointer, const Instructio
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break;
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}
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if(addOffset) {
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if(instruction.offset()) {
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if(abbreviateOffset && !(instruction.offset() & 0xff00)) {
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stream << '+' << to_hex(instruction.offset(), 2);
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} else {
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switch(offset_length) {
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case 0:
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if(!instruction.offset()) {
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break;
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}
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[[fallthrough]];
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case 2:
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if(!(instruction.offset() & 0xff00)) {
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stream << '+' << to_hex(instruction.offset(), 2);
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break;
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}
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[[fallthrough]];
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default:
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stream << '+' << to_hex(instruction.offset(), 4);
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}
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break;
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}
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}
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stream << ']';
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@ -160,7 +169,7 @@ std::string to_string(InstructionSet::x86::DataPointer pointer, const Instructio
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return [fullPaths sortedArrayUsingSelector:@selector(compare:)];
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}
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- (NSString *)toString:(const InstructionSet::x86::Instruction<false> &)instruction abbreviateOffset:(BOOL)abbreviateOffset {
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- (NSString *)toString:(const InstructionSet::x86::Instruction<false> &)instruction offsetLength:(int)offsetLength {
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// Form string version, compare.
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std::string operation;
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@ -177,11 +186,11 @@ std::string to_string(InstructionSet::x86::DataPointer pointer, const Instructio
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const bool displacement = has_displacement(instruction.operation);
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operation += " ";
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if(operands > 1) {
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operation += to_string(instruction.destination(), instruction, abbreviateOffset);
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operation += to_string(instruction.destination(), instruction, offsetLength);
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operation += ", ";
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}
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if(operands > 0) {
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operation += to_string(instruction.source(), instruction, abbreviateOffset);
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operation += to_string(instruction.source(), instruction, offsetLength);
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}
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if(displacement) {
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operation += to_hex(instruction.displacement(), 2);
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@ -222,10 +231,26 @@ std::string to_string(InstructionSet::x86::DataPointer pointer, const Instructio
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// The decoder doesn't preserve the original offset length, which makes no functional difference but
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// does affect the way that offsets are printed in the test set.
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NSString *fullOffset = [self toString:decoded.second abbreviateOffset:NO];
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NSString *shortOffset = [self toString:decoded.second abbreviateOffset:YES];
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const bool isEqual = [fullOffset isEqualToString:test[@"name"]] || [shortOffset isEqualToString:test[@"name"]];
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XCTAssert(isEqual, "%@ matches neither %@ nor %@, was %@ within %@", test[@"name"], fullOffset, shortOffset, hex_instruction(), file);
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NSString *const fullOffset = [self toString:decoded.second offsetLength:4];
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NSString *const shortOffset = [self toString:decoded.second offsetLength:2];
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NSString *const noOffset = [self toString:decoded.second offsetLength:0];
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auto compare_decoding = [&](NSString *name) -> bool {
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return [fullOffset isEqualToString:name] || [shortOffset isEqualToString:name] || [noOffset isEqualToString:name];
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};
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bool isEqual = compare_decoding(test[@"name"]);
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// TEMPORARY HACK: the test set incorrectly states 'bp+si' whenever it means 'bp+di'.
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// Though it also uses 'bp+si' correctly when it means 'bp+si'. Until fixed, take
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// a pass on potential issues there.
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if(!isEqual) {
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NSString *alteredName = [test[@"name"] stringByReplacingOccurrencesOfString:@"bp+si" withString:@"bp+di"];
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isEqual = compare_decoding(alteredName);
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}
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XCTAssert(isEqual, "%@ doesn't match %@ or similar, was %@ within %@", test[@"name"], fullOffset, hex_instruction(), file);
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// Repetition, to allow for easy breakpoint placement.
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if(!isEqual) {
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