170 lines
3.1 KiB
Plaintext
170 lines
3.1 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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# 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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# $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 rim rim
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#
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# Arithmetical SGN operation
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#
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# IF ($1 == 0) THEN
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# $2 = 0
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# ELIF ($1 GT 0) THEN
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# $2 = 1
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# ELSE
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# $2 = LONG_MIN
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# FI
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#
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# Treats $1 and $2 as signed values
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# Sets ZF and SF according to the result
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#
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sgn rm rim
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sgnf rm rim
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#
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# Arithmetical NEG operation
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#
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# $1 = NOT($2) + 1
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#
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# Sets CF if $2 == 0; clears it otherwise
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# Sets OF if $2 == $LONG_MIN; clears it otherwise
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# Sets ZF and SF according to the result
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#
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neg rm rim
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negf rm rim
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#
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# Arithmetical INC operation
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#
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# $1 = $1 + 1
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#
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# Preserves CF
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# Sets OF if $1 == $LONG_MAX, clears it otherwise
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# Sets ZF and SF according to the result
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#
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inc rm
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incf rm
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#
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# Arithmetical DEC operation
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#
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# $1 = $1 - 1
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#
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# Preserves CF
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# Sets OF if $1 == $LONG_MIN, clears it otherwise
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# Sets ZF and SF according to the result
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#
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dec rm
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decf rm
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#
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# Arithmetical ADD operation
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#
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# $1 = $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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add rm rim
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addf rm rim
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#
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# Atomic exchange and add (XADD)
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#
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# $tmp = $1
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# $1 = $1 + $2
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# $2 = $1
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#
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# Preserves all flags
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#
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xadd rm rm
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#
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# Arithmetical ADD operation, with carry
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#
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# $1 = $1 + $2 + CF
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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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adc rm rim
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adcf rm rim
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#
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# Arithmetical SUB operation
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#
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# $1 = $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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sub rm rim
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subf rm rim
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#
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# Arithmetical unsigned MUL operation
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#
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# $1 = LO($1 * $2)
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#
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# Sets CF and OF if HI($1 * $2) > 0, clears them otherwise
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# Preserves ZF and SF
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#
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mul rm rim
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mulf rm rim
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#
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# Arithmetical unsigned 128-bit MUL operation
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#
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# $1 = HI($2 * $3)
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# $2 = LO($2 * $3)
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#
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# Sets CF and OF if HI($2 * $3) > 0, clears them otherwise
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# Preserves ZF and SF
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#
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mulx rm rm rim
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mulfx rm rm rim
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#
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# Arithmetical unsigned DIV operation
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#
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# $1 = $1 DIV $2
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#
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# Preserves all flags
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#
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div rm rim
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#
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# Arithmetical unsigned combined DIV and MOD operations
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#
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# $1 = ($2 MOD $3)
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# $2 = ($2 DIV $3)
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#
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# Preserves all flags
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#
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divx rm rm rim
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#
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# Arithmetical unsigned modulo operation (REM)
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#
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# $1 = $1 MOD $2
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#
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# Preserves all flags
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#
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rem rm rim
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