89 lines
1.4 KiB
Plaintext
89 lines
1.4 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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# Movement instructions #
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#---------------------------------------------------------------------------#
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#
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# Load Effective Address (LEA) instruction
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#
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# $1 = ADDR($2)
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#
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# For instance:
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# LEA RAX, [RBX + RCX + 4]
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# will result in:
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# RAX = RBX + RCX + 4
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#
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# Preserves all flags
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#
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lea r m
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#
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# Movement with sign-extension (MOV) instruction
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#
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# $1 = $2
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#
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mov r rim
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mov m ri
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#
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# Movement with sign-extension (MOVSXx) instruction
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#
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# $1 = SignExtend($2 & (2^(8 * sizeof(x)) - 1)
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#
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movsxb r r
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movsxw r r
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movsxl r r
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#
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# Movement with zero-extension (MOVZX) instruction
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#
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# $1 = ZeroExtend($2)
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#
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movzx r m
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#
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# Exchange (XCHG) instruction
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#
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# $_ = $1
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# $1 = $2
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# $2 = $_
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#
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xchg r rm
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#
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# Compare-and-exchange (CMPXCHG) instruction
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#
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# IF ($1 == RAX) THEN
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# $1 = $2
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# ZF = 1
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# ELSE
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# RAX = $1
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# ZF = 0
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# FI
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#
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# Preserves CF, OF and SF
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#
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cmpxchg rm r
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#
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# 3-operand rotation (ROTd)
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#
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# $3 -> $2 -> $1 -> $3 (KROTL)
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# $1 -> $2 -> $3 -> $1 (KROTR)
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#
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rotr rm r r
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rotl rm r r
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#
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# Load argument #N (LDARG)
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#
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# $1 = AX$2
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#
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# Throws:
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# #ILL if $2 ≥ 16
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#
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ldarg r r
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