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games/mix: fix SLAX and SRAX instructions (thanks nicolagi)

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MIX shift instructions shift by bytes not bits.
This commit is contained in:
Alex Musolino 2020-11-28 23:02:28 +10:30
parent 0b9c6fa117
commit 2619be4d4d
1 changed files with 2 additions and 2 deletions
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4
sys/src/games/mix/mix.c
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@ -668,9 +668,9 @@ mixslrax(int m, int left)
rax |= rx & MASK5; rax |= rx & MASK5;
rx &= ~MASK5; rx &= ~MASK5;
if(left) if(left)
rax <<= m; rax <<= m*BITS;
else else
rax >>= m; rax >>= m*BITS;
rx |= rax & MASK5; rx |= rax & MASK5;
ra |= rax>>5*BITS & MASK5; ra |= rax>>5*BITS & MASK5;
} }