# The OS/K Team licenses this file to you under the MIT license.
# See the LICENSE file in the project root for more information.

#---------------------------------------------------------------------------#
# Movement instructions                                                     #
#---------------------------------------------------------------------------#

#
# Load Effective Address (LEA) instruction
#
#       $1 = ADDR($2)
#
# For instance:
#       LEA RAX, [RBX + RCX + 4]
# will result in:
#       RAX = RBX + RCX + 4
#
# Preserves all flags
#
lea rm m

#
# Movement (MOV) instruction
#
#       $1 = $2
#
mov rm rim

#
# Movement with zero-extension (MOVZX) instruction
#
#       $1 = ZeroExtend($2)
#
movzx rm m

#
# Exchange (XCHG) instruction
#
#       $_ = $1
#       $1 = $2
#       $2 = $_
#
xchg rm rim

#
# Compare-and-exchange (CMPXCHG) instruction
#
#       IF ($1 == RAX) THEN
#           $1 = $2
#           ZF = 1
#       ELSE
#           RAX = $1
#           ZF = 0
#       FI
#
# Preserves CF, OF and SF
#
cmpxchg rm rim

#
# Load argument #N (LDARG)
#
#       IF ($2 < 8) THEN
#           $1 = AX$2
#       ELSE
#           $1 = LX($2-8)
#       FI
#
# Throws:
#       #ILL if $2 ≥ 16
#
ldarg rm rim

#
# Get code/data offset (GCO/GCD)
#
#       $1 = CR1       (GCO)
#       $1 = CR2       (GCD)
#
gco rm
gcd rm