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kvisc/vm/in/JUMPS
julianb0 a42786831f
vm
2019-07-04 20:33:49 +02:00

44 lines
991 B
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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.
#---------------------------------------------------------------------------#
# Jump instructions #
#---------------------------------------------------------------------------#
#
# Jump (JMP) instruction
#
# RIP = $1
#
j ri
jmp ri
#
# RCX-dependent jump (LOOP) instruction
#
# IF (RCX > 0) THEN
# RCX = RCX - 1
# RIP = $1
# FI
#
loop ri
#
# Conditional absolute jumps (B)
#
# COMPARE($1, $2)
#
# IF (COND) THEN
# RIP = $3
# FI
#
# Sets CF, OF, ZF and SF according to the comparison's results
#
# This instruction is special in that the COND field specified is not evaluated
# before the instruction is executed, but after the comparison it effectuates
#
# Suffixing B with the REP suffix results in undefined behavior
#
b rm ri ri