kvisc/pc/instrs/INSTRS

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

stop
nop

#
# Logical instructions
#

not r
not m

and r r
and r i
and r m
and m r
and m i
and m m

or r r
or r i
or r m
or m r
or m i
or m m

xor r r
xor r i
xor r m
xor m r
xor m i
xor m m

# shift left logical
shl r r
shl r i
shl r m
shl m r
shl m i
shl m m

# shift right logical
shr r r
shr r i
shr r m
shr m r
shr m i
shr m m

#
# Unsigned arithmetic instructions
#

add r r
add r i
add r m
add m r
add m i
add m m

sub r r
sub r i
sub r m
sub m r
sub m i
sub m m

# rdx = hi(rax * $0)
# rax = lo(rax * $0)
mul r
mul i

# rdx = rax % $0
# rax = rax / $0
div r
div i

inc r
inc m

dec r
dec m

#
# Comparison instruction
#

# Affects ZF and CF
cmp r r
cmp r i
cmp r m
cmp i r
cmp i i
cmp i m
cmp m r
cmp m i
cmp m m

# Only affects ZF
test r r
test r i
test r m
test i r
test i i
test i m
test m r
test m i
test m m

#
# Jump instructions
#

jmp r
jmp i

loop r
loop i

jz r
jz i
jnz r
jnz i
je r
je i
jne r
jne i

ja r
ja i
jae r
jae i

jb r
jb i
jbe r
jbe i

jcxz

#
# Movement instructions
#

mov r r
mov r i
mov r m
mov m r
mov m i
mov m m

xchg r r
xchg r i
xchg r m
xchg m r
xchg m i
xchg m m

lea r m
lea m m

# get code segment
gcs r m

#
# Stack manipulation instructions
#

push i
push r
push m

pop r
pop m

call r
call i
call m

ret

# push rbp
# mov rbp, rsp
enter

# mov rbp, [rsp+8]
# add rsp, 8
leave

pushf

#
# Supervisor only instructions
#

popf

cli
sti

# Prints a character on the screen
prn r
prn i
prn m