177 lines
3.0 KiB
Plaintext
177 lines
3.0 KiB
Plaintext
# The OS/K Team licenses this file to you under the MIT license.
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# See the LICENSE file in the project root for more information.
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#---------------------------------------------------------------------------#
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# Logical instructions #
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#---------------------------------------------------------------------------#
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#
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# Bitwise OR operation
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#
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# $dest = $src1 OR $src2
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#
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# Preserves all flags
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#
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or 2
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or 3
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#
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# Bitwise AND operation
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#
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# $dest = $src1 AND $src2
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#
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# Preserves all flags
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#
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and 2
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and 3
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#
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# Bitwise XOR operation
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#
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# $dest = $src1 XOR $src2
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#
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# Preserves all flags
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#
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xor 2
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xor 3
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#
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# Logical left/right shift (SHL/SHR)
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#
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# $dest = $src1 << $src2 (SHL)
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# $dest = $src1 >> $src2 (SHR)
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#
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# Preserves all flags
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#
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shl 2
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shl 3
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shr 2
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shr 3
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#
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# Arithmetical right shift (SAR)
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#
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# $dest = $src1 >>> $src2 (SAR)
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#
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# Preserves all flags
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#
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sar 2
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sar 3
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#---------------------------------------------------------------------------#
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# Arithmetic instructions #
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#---------------------------------------------------------------------------#
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#
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# CMP Comparison instruction
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#
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# SignExtend($1) - $2
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#
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# Sets CF if unsigned integer overflow occur, clears it otherwise
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# Sets OF is signed integer overflow occur, clears it otherwise
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# Sets ZF and SF according to the result
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#
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cmp 2
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#
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# Arithmetical ADD operation
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#
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# $dest1 = $src1 + $src2
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#
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# Sets CF if unsigned integer overflow occur, clears it otherwise
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# Sets OF is signed integer overflow occur, clears it otherwise
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# Sets ZF and SF according to the result
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#
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add 2
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add 3
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addf 3
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#
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# Arithmetical SUB operation
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#
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# $dest = $src1 - $src2
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#
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# Sets CF if unsigned integer overflow occur, clears it otherwise
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# Sets OF is signed integer overflow occur, clears it otherwise
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# Sets ZF and SF according to the result
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#
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sub 2
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sub 3
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subf 3
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#
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# Arithmetical ADD/SUB operation, with carry/overflow
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#
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# $dest = $src1 + $src2 + CF (ADC)
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# $dest = $src1 - $src2 - CF (SBB)
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#
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# Sets CF if unsigned integer overflow occur, clears it otherwise
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# Sets OF is signed integer overflow occur, clears it otherwise
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# Sets ZF and SF according to the result
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#
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adcx 2
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adcx 3
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sbbx 2
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sbbx 3
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#
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# Arithmetical MUL operation
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#
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# $dest = LO($src1 * $src2)
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#
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# Preserves ZF and SF
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# Sets CF and OF if HI($src1 * $src2) > 0, clears them otherwise
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#
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mul 2
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mul 3
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mulf 3
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# Arithmetical unsigned MUL operation
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#
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# $dest1 = HI($dest2 * $src)
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# $dest2 = LO($dest2 * $src)
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#
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# Preserves all flags
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#
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mulhi 3
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# Arithmetical signed MUL operation
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#
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# $dest1 = HI($dest2 ** $src)
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# $dest2 = LO($dest2 ** $src)
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#
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# Preserves all flags
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#
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imulhi 3
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#
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# Arithmetical unsigned DIV operation
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#
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# $dest = $src1 DIV $src2
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#
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# Preserves all flags
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#
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div 2
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div 3
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#
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# Arithmetical signed DIV operation
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#
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# $dest = $src1 IDIV $src2
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#
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# Preserves all flags
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#
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idiv 2
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idiv 3
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#
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# Arithmetical modulo operation (REM)
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#
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# $dest = $src1 MOD $src2
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#
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# Preserves all flags
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#
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rem 2
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rem 3
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