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Implements LINK and UNLINK.
Also starts excluding opcodes that I can't determine the mapping of from the list of those tested against. Due to those two things together, the latter incomplete: 627 opcodes outstanding. But only STOP and MOVEP remain on my list of things to implement prior to exceptions.
This commit is contained in:
Thomas Harte
parent
4b1324de77
commit
0298b1b3b7
@ -265,10 +265,140 @@ class CPU::MC68000::ProcessorStorageTests {
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[[NSBundle bundleForClass:[self class]] pathForResource:@"OPCLOGR2" ofType:@"BIN"].UTF8String
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);
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// This is a list of instructions nominated as valid with OPCLOGR2.BIN but with no obvious decoding —
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// the disassemblers I tried couldn't figure them out, and I didn't spot them anywhere in the PRM.
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NSSet<NSNumber *> *const undecodables = [NSSet setWithArray:@[
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// These look like malformed MOVEs.
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@(0x2e7d), @(0x2e7e), @(0x2e7f), @(0x2efd), @(0x2efe), @(0x2eff), @(0x2f7d), @(0x2f7e),
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@(0x2f7f), @(0x2fc0), @(0x2fc1), @(0x2fc2), @(0x2fc3), @(0x2fc4), @(0x2fc5), @(0x2fc6),
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@(0x2fc7), @(0x2fc8), @(0x2fc9), @(0x2fca), @(0x2fcb), @(0x2fcc), @(0x2fcd), @(0x2fce),
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@(0x2fcf), @(0x2fd0), @(0x2fd1), @(0x2fd2), @(0x2fd3), @(0x2fd4), @(0x2fd5), @(0x2fd6),
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@(0x2fd7), @(0x2fd8), @(0x2fd9), @(0x2fda), @(0x2fdb), @(0x2fdc), @(0x2fdd), @(0x2fde),
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@(0x2fdf), @(0x2fe0), @(0x2fe1), @(0x2fe2), @(0x2fe3), @(0x2fe4), @(0x2fe5), @(0x2fe6),
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@(0x2fe7), @(0x2fe8), @(0x2fe9), @(0x2fea), @(0x2feb), @(0x2fec), @(0x2fed), @(0x2fee),
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@(0x2fef), @(0x2ff0), @(0x2ff1), @(0x2ff2), @(0x2ff3), @(0x2ff4), @(0x2ff5), @(0x2ff6),
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@(0x2ff7), @(0x2ff8), @(0x2ff9), @(0x2ffa), @(0x2ffb), @(0x2ffc), @(0x2ffd), @(0x2ffe),
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@(0x2fff),
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@(0x3e7d), @(0x3e7e), @(0x3e7f), @(0x3efd), @(0x3efe), @(0x3eff), @(0x3f7d), @(0x3f7e),
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@(0x3f7f), @(0x3fc0), @(0x3fc1), @(0x3fc2), @(0x3fc3), @(0x3fc4), @(0x3fc5), @(0x3fc6),
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@(0x3fc7), @(0x3fc8), @(0x3fc9), @(0x3fca), @(0x3fcb), @(0x3fcc), @(0x3fcd), @(0x3fce),
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@(0x3fcf), @(0x3fd0), @(0x3fd1), @(0x3fd2), @(0x3fd3), @(0x3fd4), @(0x3fd5), @(0x3fd6),
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@(0x3fd7), @(0x3fd8), @(0x3fd9), @(0x3fda), @(0x3fdb), @(0x3fdc), @(0x3fdd), @(0x3fde),
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@(0x3fdf), @(0x3fe0), @(0x3fe1), @(0x3fe2), @(0x3fe3), @(0x3fe4), @(0x3fe5), @(0x3fe6),
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@(0x3fe7), @(0x3fe8), @(0x3fe9), @(0x3fea), @(0x3feb), @(0x3fec), @(0x3fed), @(0x3fee),
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@(0x3fef), @(0x3ff0), @(0x3ff1), @(0x3ff2), @(0x3ff3), @(0x3ff4), @(0x3ff5), @(0x3ff6),
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@(0x3ff7), @(0x3ff8), @(0x3ff9), @(0x3ffa), @(0x3ffb), @(0x3ffc), @(0x3ffd), @(0x3ffe),
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@(0x3fff),
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// These are almost MOVEQs if only bit 8 weren't set.
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@(0x71c8), @(0x71c9), @(0x71ca), @(0x71cb), @(0x71cc), @(0x71cd), @(0x71ce), @(0x71cf),
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@(0x71d8), @(0x71d9), @(0x71da), @(0x71db), @(0x71dc), @(0x71dd), @(0x71de), @(0x71df),
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@(0x71e8), @(0x71e9), @(0x71ea), @(0x71eb), @(0x71ec), @(0x71ed), @(0x71ee), @(0x71ef),
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@(0x71f8), @(0x71f9), @(0x71fa), @(0x71fb), @(0x71fc), @(0x71fd), @(0x71fe), @(0x71ff),
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@(0x73c8), @(0x73c9), @(0x73ca), @(0x73cb), @(0x73cc), @(0x73cd), @(0x73ce), @(0x73cf),
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@(0x73d8), @(0x73d9), @(0x73da), @(0x73db), @(0x73dc), @(0x73dd), @(0x73de), @(0x73df),
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@(0x73e8), @(0x73e9), @(0x73ea), @(0x73eb), @(0x73ec), @(0x73ed), @(0x73ee), @(0x73ef),
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@(0x73f8), @(0x73f9), @(0x73fa), @(0x73fb), @(0x73fc), @(0x73fd), @(0x73fe), @(0x73ff),
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@(0x75c8), @(0x75c9), @(0x75ca), @(0x75cb), @(0x75cc), @(0x75cd), @(0x75ce), @(0x75cf),
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@(0x75d8), @(0x75d9), @(0x75da), @(0x75db), @(0x75dc), @(0x75dd), @(0x75de), @(0x75df),
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@(0x75e8), @(0x75e9), @(0x75ea), @(0x75eb), @(0x75ec), @(0x75ed), @(0x75ee), @(0x75ef),
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@(0x75f8), @(0x75f9), @(0x75fa), @(0x75fb), @(0x75fc), @(0x75fd), @(0x75fe), @(0x75ff),
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@(0x77c0), @(0x77c1), @(0x77c2), @(0x77c3), @(0x77c4), @(0x77c5), @(0x77c6), @(0x77c7),
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@(0x77c8), @(0x77c9), @(0x77ca), @(0x77cb), @(0x77cc), @(0x77cd), @(0x77ce), @(0x77cf),
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@(0x77d0), @(0x77d1), @(0x77d2), @(0x77d3), @(0x77d4), @(0x77d5), @(0x77d6), @(0x77d7),
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@(0x77d8), @(0x77d9), @(0x77da), @(0x77db), @(0x77dc), @(0x77dd), @(0x77de), @(0x77df),
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@(0x77e0), @(0x77e1), @(0x77e2), @(0x77e3), @(0x77e4), @(0x77e5), @(0x77e6), @(0x77e7),
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@(0x77e8), @(0x77e9), @(0x77ea), @(0x77eb), @(0x77ec), @(0x77ed), @(0x77ee), @(0x77ef),
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@(0x77f0), @(0x77f1), @(0x77f2), @(0x77f3), @(0x77f4), @(0x77f5), @(0x77f6), @(0x77f7),
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@(0x77f8), @(0x77f9), @(0x77fa), @(0x77fb), @(0x77fc), @(0x77fd), @(0x77fe), @(0x77ff),
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@(0x79c8), @(0x79c9), @(0x79ca), @(0x79cb), @(0x79cc), @(0x79cd), @(0x79ce), @(0x79cf),
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@(0x79d8), @(0x79d9), @(0x79da), @(0x79db), @(0x79dc), @(0x79dd), @(0x79de), @(0x79df),
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@(0x79e8), @(0x79e9), @(0x79ea), @(0x79eb), @(0x79ec), @(0x79ed), @(0x79ee), @(0x79ef),
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@(0x79f8), @(0x79f9), @(0x79fa), @(0x79fb), @(0x79fc), @(0x79fd), @(0x79fe), @(0x79ff),
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@(0x7bc8), @(0x7bc9), @(0x7bca), @(0x7bcb), @(0x7bcc), @(0x7bcd), @(0x7bce), @(0x7bcf),
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@(0x7bd8), @(0x7bd9), @(0x7bda), @(0x7bdb), @(0x7bdc), @(0x7bdd), @(0x7bde), @(0x7bdf),
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@(0x7be8), @(0x7be9), @(0x7bea), @(0x7beb), @(0x7bec), @(0x7bed), @(0x7bee), @(0x7bef),
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@(0x7bf8), @(0x7bf9), @(0x7bfa), @(0x7bfb), @(0x7bfc), @(0x7bfd), @(0x7bfe), @(0x7bff),
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@(0x7dc8), @(0x7dc9), @(0x7dca), @(0x7dcb), @(0x7dcc), @(0x7dcd), @(0x7dce), @(0x7dcf),
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@(0x7dd8), @(0x7dd9), @(0x7dda), @(0x7ddb), @(0x7ddc), @(0x7ddd), @(0x7dde), @(0x7ddf),
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@(0x7de8), @(0x7de9), @(0x7dea), @(0x7deb), @(0x7dec), @(0x7ded), @(0x7dee), @(0x7def),
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@(0x7df8), @(0x7df9), @(0x7dfa), @(0x7dfb), @(0x7dfc), @(0x7dfd), @(0x7dfe), @(0x7dff),
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@(0x7f40), @(0x7f41), @(0x7f42), @(0x7f43), @(0x7f44), @(0x7f45), @(0x7f46), @(0x7f47),
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@(0x7f48), @(0x7f49), @(0x7f4a), @(0x7f4b), @(0x7f4c), @(0x7f4d), @(0x7f4e), @(0x7f4f),
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@(0x7f50), @(0x7f51), @(0x7f52), @(0x7f53), @(0x7f54), @(0x7f55), @(0x7f56), @(0x7f57),
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@(0x7f58), @(0x7f59), @(0x7f5a), @(0x7f5b), @(0x7f5c), @(0x7f5d), @(0x7f5e), @(0x7f5f),
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@(0x7f60), @(0x7f61), @(0x7f62), @(0x7f63), @(0x7f64), @(0x7f65), @(0x7f66), @(0x7f67),
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@(0x7f68), @(0x7f69), @(0x7f6a), @(0x7f6b), @(0x7f6c), @(0x7f6d), @(0x7f6e), @(0x7f6f),
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@(0x7f70), @(0x7f71), @(0x7f72), @(0x7f73), @(0x7f74), @(0x7f75), @(0x7f76), @(0x7f77),
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@(0x7f78), @(0x7f79), @(0x7f7a), @(0x7f7b), @(0x7f7c), @(0x7f7d), @(0x7f7e), @(0x7f7f),
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@(0x7f80), @(0x7f81), @(0x7f82), @(0x7f83), @(0x7f84), @(0x7f85), @(0x7f86), @(0x7f87),
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@(0x7f88), @(0x7f89), @(0x7f8a), @(0x7f8b), @(0x7f8c), @(0x7f8d), @(0x7f8e), @(0x7f8f),
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@(0x7f90), @(0x7f91), @(0x7f92), @(0x7f93), @(0x7f94), @(0x7f95), @(0x7f96), @(0x7f97),
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@(0x7f98), @(0x7f99), @(0x7f9a), @(0x7f9b), @(0x7f9c), @(0x7f9d), @(0x7f9e), @(0x7f9f),
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@(0x7fa0), @(0x7fa1), @(0x7fa2), @(0x7fa3), @(0x7fa4), @(0x7fa5), @(0x7fa6), @(0x7fa7),
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@(0x7fa8), @(0x7fa9), @(0x7faa), @(0x7fab), @(0x7fac), @(0x7fad), @(0x7fae), @(0x7faf),
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@(0x7fb0), @(0x7fb1), @(0x7fb2), @(0x7fb3), @(0x7fb4), @(0x7fb5), @(0x7fb6), @(0x7fb7),
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@(0x7fb8), @(0x7fb9), @(0x7fba), @(0x7fbb), @(0x7fbc), @(0x7fbd), @(0x7fbe), @(0x7fbf),
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@(0x7fc0), @(0x7fc1), @(0x7fc2), @(0x7fc3), @(0x7fc4), @(0x7fc5), @(0x7fc6), @(0x7fc7),
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@(0x7fc8), @(0x7fc9), @(0x7fca), @(0x7fcb), @(0x7fcc), @(0x7fcd), @(0x7fce), @(0x7fcf),
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@(0x7fd0), @(0x7fd1), @(0x7fd2), @(0x7fd3), @(0x7fd4), @(0x7fd5), @(0x7fd6), @(0x7fd7),
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@(0x7fd8), @(0x7fd9), @(0x7fda), @(0x7fdb), @(0x7fdc), @(0x7fdd), @(0x7fde), @(0x7fdf),
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@(0x7fe0), @(0x7fe1), @(0x7fe2), @(0x7fe3), @(0x7fe4), @(0x7fe5), @(0x7fe6), @(0x7fe7),
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@(0x7fe8), @(0x7fe9), @(0x7fea), @(0x7feb), @(0x7fec), @(0x7fed), @(0x7fee), @(0x7fef),
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@(0x7ff0), @(0x7ff1), @(0x7ff2), @(0x7ff3), @(0x7ff4), @(0x7ff5), @(0x7ff6), @(0x7ff7),
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@(0x7ff8), @(0x7ff9), @(0x7ffa), @(0x7ffb), @(0x7ffc), @(0x7ffd), @(0x7ffe), @(0x7fff),
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// These are from the Bcc/BRA/BSR page.
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@(0xd0fd), @(0xd0fe), @(0xd0ff), @(0xd1fd), @(0xd1fe), @(0xd1ff), @(0xd2fd), @(0xd2fe),
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@(0xd2ff), @(0xd3fd), @(0xd3fe), @(0xd3ff), @(0xd4fd), @(0xd4fe), @(0xd4ff), @(0xd5fd),
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@(0xd5fe), @(0xd5ff), @(0xd6fd), @(0xd6fe), @(0xd6ff), @(0xd7fd), @(0xd7fe), @(0xd7ff),
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@(0xd8fd), @(0xd8fe), @(0xd8ff), @(0xd9fd), @(0xd9fe), @(0xd9ff), @(0xdafd), @(0xdafe),
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@(0xdaff), @(0xdbfd), @(0xdbfe), @(0xdbff), @(0xdcfd), @(0xdcfe), @(0xdcff), @(0xddfd),
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@(0xddfe), @(0xddff), @(0xdebd), @(0xdebe), @(0xdebf), @(0xdefd), @(0xdefe), @(0xdeff),
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@(0xdfba), @(0xdfbb), @(0xdfbc), @(0xdfbd), @(0xdfbe), @(0xdfbf), @(0xdffd), @(0xdffe),
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@(0xdfff),
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// The E line is for shifts and rolls; none of the those listed below appear to nominate valid
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// addressing modes.
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@(0xe6c0), @(0xe6c1), @(0xe6c2), @(0xe6c3), @(0xe6c4), @(0xe6c5), @(0xe6c6), @(0xe6c7),
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@(0xe6c8), @(0xe6c9), @(0xe6ca), @(0xe6cb), @(0xe6cc), @(0xe6cd), @(0xe6ce), @(0xe6cf),
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@(0xe6fa), @(0xe6fb), @(0xe6fc), @(0xe6fd), @(0xe6fe), @(0xe6ff), @(0xe7c0), @(0xe7c1),
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@(0xe7c2), @(0xe7c3), @(0xe7c4), @(0xe7c5), @(0xe7c6), @(0xe7c7), @(0xe7c8), @(0xe7c9),
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@(0xe7ca), @(0xe7cb), @(0xe7cc), @(0xe7cd), @(0xe7ce), @(0xe7cf), @(0xe7fa), @(0xe7fb),
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@(0xe7fc), @(0xe7fd), @(0xe7fe), @(0xe7ff), @(0xeec0), @(0xeec1), @(0xeec2), @(0xeec3),
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@(0xeec4), @(0xeec5), @(0xeec6), @(0xeec7), @(0xeec8), @(0xeec9), @(0xeeca), @(0xeecb),
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@(0xeecc), @(0xeecd), @(0xeece), @(0xeecf), @(0xeed0), @(0xeed1), @(0xeed2), @(0xeed3),
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@(0xeed4), @(0xeed5), @(0xeed6), @(0xeed7), @(0xeed8), @(0xeed9), @(0xeeda), @(0xeedb),
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@(0xeedc), @(0xeedd), @(0xeede), @(0xeedf), @(0xeee0), @(0xeee1), @(0xeee2), @(0xeee3),
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@(0xeee4), @(0xeee5), @(0xeee6), @(0xeee7), @(0xeee8), @(0xeee9), @(0xeeea), @(0xeeeb),
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@(0xeeec), @(0xeeed), @(0xeeee), @(0xeeef), @(0xeef0), @(0xeef1), @(0xeef2), @(0xeef3),
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@(0xeef4), @(0xeef5), @(0xeef6), @(0xeef7), @(0xeef8), @(0xeef9), @(0xeefa), @(0xeefb),
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@(0xeefc), @(0xeefd), @(0xeefe), @(0xeeff), @(0xefc0), @(0xefc1), @(0xefc2), @(0xefc3),
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@(0xefc4), @(0xefc5), @(0xefc6), @(0xefc7), @(0xefc8), @(0xefc9), @(0xefca), @(0xefcb),
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@(0xefcc), @(0xefcd), @(0xefce), @(0xefcf), @(0xefd0), @(0xefd1), @(0xefd2), @(0xefd3),
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@(0xefd4), @(0xefd5), @(0xefd6), @(0xefd7), @(0xefd8), @(0xefd9), @(0xefda), @(0xefdb),
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@(0xefdc), @(0xefdd), @(0xefde), @(0xefdf), @(0xefe0), @(0xefe1), @(0xefe2), @(0xefe3),
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@(0xefe4), @(0xefe5), @(0xefe6), @(0xefe7), @(0xefe8), @(0xefe9), @(0xefea), @(0xefeb),
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@(0xefec), @(0xefed), @(0xefee), @(0xefef), @(0xeff0), @(0xeff1), @(0xeff2), @(0xeff3),
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@(0xeff4), @(0xeff5), @(0xeff6), @(0xeff7), @(0xeff8), @(0xeff9), @(0xeffa), @(0xeffb),
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@(0xeffc), @(0xeffd), @(0xeffe), @(0xefff)
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]];
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NSSet<NSNumber *> *const falseValids = storage_tests.false_valids();
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NSSet<NSNumber *> *const falseInvalids = storage_tests.false_invalids();
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XCTAssert(!falseValids.count, "%@ opcodes should be invalid but aren't: %@", @(falseValids.count), falseValids.hexDump);
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XCTAssert(!falseInvalids.count, "%@ opcodes should be valid but aren't: %@", @(falseInvalids.count), falseInvalids.hexDump);
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NSMutableSet<NSNumber *> *const decodedUndecodables = [undecodables mutableCopy];
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[decodedUndecodables minusSet:falseInvalids];
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XCTAssert(!decodedUndecodables.count, "This test considers these undecodable but they were decoded: %@", decodedUndecodables.hexDump);
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NSMutableSet<NSNumber *> *const trimmedInvalids = [falseInvalids mutableCopy];
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[trimmedInvalids minusSet:undecodables];
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XCTAssert(!trimmedInvalids.count, "%@ opcodes should be valid but aren't: %@", @(trimmedInvalids.count), trimmedInvalids.hexDump);
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// XCTAssert(!falseInvalids.count, "%@ opcodes should be valid but aren't: %@", @(falseInvalids.count), falseInvalids.hexDump);
|
||||
}
|
||||
|
||||
@end
|
||||
|
||||
@ -1075,6 +1075,31 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
|
||||
case Operation::None:
|
||||
break;
|
||||
|
||||
/*
|
||||
LINK and UNLINK help with stack frames, allowing a certain
|
||||
amount of stack space to be allocated or deallocated.
|
||||
*/
|
||||
|
||||
case Operation::LINK:
|
||||
// Make space for the new long-word value, and set up
|
||||
// the proper target address for the stack operations to follow.
|
||||
address_[7].full -= 4;
|
||||
effective_address_[1].full = address_[7].full;
|
||||
|
||||
// The current value of the address register will be pushed.
|
||||
destination_bus_data_[0].full = active_program_->source->full;
|
||||
|
||||
// The address register will then contain the bottom of the stack,
|
||||
// and the stack pointer will be offset.
|
||||
active_program_->source->full = address_[7].full;
|
||||
address_[7].full += int16_t(prefetch_queue_.halves.low.full);
|
||||
break;
|
||||
|
||||
case Operation::UNLINK:
|
||||
address_[7].full = effective_address_[1].full;
|
||||
active_program_->destination->full = destination_bus_data_[0].full;
|
||||
break;
|
||||
|
||||
/*
|
||||
TAS: sets zero and negative depending on the current value of the destination,
|
||||
and sets the high bit.
|
||||
|
||||
@ -316,12 +316,10 @@ struct ProcessorStorageConstructor {
|
||||
|
||||
// A stack write.
|
||||
if(token == "nS" || token == "ns") {
|
||||
RegisterPair32 *const scratch_data = &storage_.destination_bus_data_[0];
|
||||
|
||||
step.microcycle.length = HalfCycles(5);
|
||||
step.microcycle.operation = Microcycle::NewAddress;
|
||||
step.microcycle.address = &storage_.effective_address_[1].full;
|
||||
step.microcycle.value = isupper(token[1]) ? &scratch_data->halves.high : &scratch_data->halves.low;
|
||||
step.microcycle.value = isupper(token[1]) ? &storage_.destination_bus_data_[0].halves.high : &storage_.destination_bus_data_[0].halves.low;
|
||||
steps.push_back(step);
|
||||
|
||||
step.microcycle.length = HalfCycles(3);
|
||||
@ -462,6 +460,9 @@ struct ProcessorStorageConstructor {
|
||||
TAS, // Maps a mode and register to a TAS.
|
||||
|
||||
PEA, // Maps a mode and register to a PEA.
|
||||
|
||||
LINK, // Maps a register to a LINK.
|
||||
UNLINK, // Maps a register to an UNLINK.
|
||||
};
|
||||
|
||||
using Operation = ProcessorStorage::Operation;
|
||||
@ -696,6 +697,9 @@ struct ProcessorStorageConstructor {
|
||||
|
||||
{0xfff8, 0x4880, Operation::EXTbtow, Decoder::EXT_SWAP}, // 4-106 (p210)
|
||||
{0xfff8, 0x48c0, Operation::EXTwtol, Decoder::EXT_SWAP}, // 4-106 (p210)
|
||||
|
||||
{0xfff8, 0x4e50, Operation::LINK, Decoder::LINK}, // 4-111 (p215)
|
||||
{0xfff8, 0x4e58, Operation::UNLINK, Decoder::UNLINK}, // 4-194 (p298)
|
||||
};
|
||||
|
||||
std::vector<size_t> micro_op_pointers(65536, std::numeric_limits<size_t>::max());
|
||||
@ -741,6 +745,17 @@ struct ProcessorStorageConstructor {
|
||||
#define inc(n) increment_action(is_long_word_access, is_byte_access, n)
|
||||
|
||||
switch(mapping.decoder) {
|
||||
case Decoder::LINK: {
|
||||
storage_.instructions[instruction].set_source(storage_, An, ea_register);
|
||||
op(Action::PerformOperation, seq("np nW+ nw np", { ea(1), ea(1) }));
|
||||
} break;
|
||||
|
||||
case Decoder::UNLINK: {
|
||||
storage_.instructions[instruction].set_destination(storage_, An, ea_register);
|
||||
op(int(Action::CopyToEffectiveAddress) | MicroOp::DestinationMask, seq("nRd+ nrd np", { ea(1), ea(1) }));
|
||||
op(Action::PerformOperation);
|
||||
} break;
|
||||
|
||||
case Decoder::TAS: {
|
||||
const int mode = combined_mode(ea_mode, ea_register);
|
||||
storage_.instructions[instruction].set_destination(storage_, ea_mode, ea_register);
|
||||
|
||||
@ -115,6 +115,8 @@ class ProcessorStorage {
|
||||
TAS,
|
||||
|
||||
EXTbtow, EXTwtol,
|
||||
|
||||
LINK, UNLINK,
|
||||
};
|
||||
|
||||
/*!
|
||||
|
||||
Loading…
Reference in New Issue
Block a user