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Certain pseudo opcodes are permitted. They are for branch instructions. They expand to the shortest branch instruction that reaches the target. Generally these mnemonics are made by substituting j for b at the start of a DEC mnemonic. This feature is included both for compatibility and to help compilers. If you do not need this feature, avoid these opcodes. Here are the mnemonics, and the code they can expand into.
jbsb
Jsb is already an instruction mnemonic, so we chose jbsb.
bsbb
bsbw
jsb
jbr
jr
Unconditional branch.
brb
brw
jmp
jCOND
COND may be any one of the conditional branches neq
, nequ
, eql
, eqlu
, gtr
, geq
, lss
, gtru
, lequ
, vc
, vs
, gequ
, cc
, lssu
, cs
. COND may also be one of the bit tests bs
, bc
, bss
, bcs
, bsc
, bcc
, bssi
, bcci
, lbs
, lbc
. NOTCOND is the opposite condition to COND.
bCOND
bNOTCOND foo ; brw ; foo:
bNOTCOND foo ; jmp ; foo:
jacbX
X may be one of b d f g h l w
.
OPCODE
OPCODE , foo ; brb bar ; foo: jmp ; bar:
jaobYYY
YYY may be one of lss leq
.
jsobZZZ
ZZZ may be one of geq gtr
.
OPCODE
OPCODE , foo ; brb bar ; foo: brw destination ; bar:
OPCODE , foo ; brb bar ; foo: jmp destination ; bar:
aobleq
aoblss
sobgeq
sobgtr
OPCODE
OPCODE , foo ; brb bar ; foo: brw destination ; bar:
OPCODE , foo ; brb bar ; foo: jmp destination ; bar:
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