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kvisc/vm/in/ALU

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