2003-06-06 23:49:30 +02:00
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; IQ2000/IQ10 Common CPU description. -*- Scheme -*-
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2004-10-27 11:30:09 +02:00
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; Copyright (C) 2000, 2001, 2002 Red Hat, Inc.
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; This file is part of CGEN.
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; See file COPYING.CGEN for details.
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2003-06-06 23:49:30 +02:00
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(include "simplify.inc")
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(define-arch
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(name iq2000)
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(comment "IQ2000 architecture")
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(insn-lsb0? #t)
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(machs iq2000 iq10)
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(isas iq2000)
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)
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(define-isa
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(name iq2000)
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(comment "Basic IQ2000 instruction set")
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(default-insn-word-bitsize 32)
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(default-insn-bitsize 32)
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(base-insn-bitsize 32)
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(decode-assist (31 30 29 28 27 26))
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)
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(define-cpu
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(name iq2000bf)
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(comment "IQ2000 family")
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(endian big)
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(word-bitsize 32)
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(file-transform "")
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)
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(define-cpu
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(name iq10bf)
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(comment "IQ10 coprocessor family")
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(endian big)
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(word-bitsize 32)
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(file-transform "")
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)
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(define-mach
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(name iq2000)
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(comment "IQ2000 packet processing engine")
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(cpu iq2000bf)
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(isas iq2000)
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)
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(define-mach
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(name iq10)
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(comment "IQ10 coprocessor")
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(cpu iq10bf)
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(isas iq2000)
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)
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(define-model
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(name iq2000)
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(comment "IQ2000 microprocessor")
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(mach iq2000)
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(unit u-exec "Execution Unit" ()
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1 1 ; issue done
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() () () ())
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)
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(define-model
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(name iq10)
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(comment "IQ10 coprocessor")
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(mach iq10)
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(unit u-exec "Execution Unit" ()
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1 1 ; issue done
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() () () ())
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)
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; Macros to simplify MACH attribute specification.
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(define-pmacro MACH2000 (MACH iq2000))
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(define-pmacro MACH10 (MACH iq10))
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; Hardware elements.
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(define-hardware
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(name h-pc)
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(comment "program counter")
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(attrs PC PROFILE (ISA iq2000))
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(type pc)
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(get () (c-call USI "get_h_pc"))
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(set (newval) (c-call VOID "set_h_pc" newval))
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)
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; FIXME: it would be nice if the hardwired zero in R0 could be
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; specified as a virtual hardware element, with one less register in
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; the register file proper.
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(define-keyword
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(name gr-names)
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(print-name h-gr)
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(values (r0 0) (%0 0) (r1 1) (%1 1) (r2 2) (%2 2) (r3 3) (%3 3)
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(r4 4) (%4 4) (r5 5) (%5 5) (r6 6) (%6 6) (r7 7) (%7 7)
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(r8 8) (%8 8) (r9 9) (%9 9) (r10 10) (%10 10) (r11 11) (%11 11)
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(r12 12) (%12 12) (r13 13) (%13 13) (r14 14) (%14 14) (r15 15) (%15 15)
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(r16 16) (%16 16) (r17 17) (%17 17) (r18 18) (%18 18) (r19 19) (%19 19)
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(r20 20) (%20 20) (r21 21) (%21 21) (r22 22) (%22 22) (r23 23) (%23 23)
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(r24 24) (%24 24) (r25 25) (%25 25) (r26 26) (%26 26) (r27 27) (%27 27)
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(r28 28) (%28 28) (r29 29) (%29 29) (r30 30) (%30 30) (r31 31) (%31 31))
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)
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(define-hardware
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(name h-gr)
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(comment "General purpose registers")
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; (attrs (ISA iq2000) CACHE-ADDR)
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(type register SI (32))
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(indices extern-keyword gr-names)
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(get (idx)
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(cond SI
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((eq idx 0) (const 0))
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(else (raw-reg h-gr idx))))
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(set (idx newval)
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(cond VOID
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((eq idx 0) (nop))
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(else (set (raw-reg h-gr idx) newval))))
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)
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; Instruction fields.
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(dnf f-opcode "opcode field" () 31 6)
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(dnf f-rs "register field Rs" () 25 5)
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(dnf f-rt "register field Rt" () 20 5)
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(dnf f-rd "register field Rd" () 15 5)
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(dnf f-shamt "shift amount field" () 10 5)
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(dnf f-cp-op "coprocessor op field" () 10 3)
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(dnf f-cp-op-10 "coprocessor op field for CAM" () 10 5)
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(dnf f-cp-grp "coprocessor group field" () 7 2)
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(dnf f-func "function field" () 5 6)
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(dnf f-imm "immediate field" () 15 16)
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(define-multi-ifield
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(name f-rd-rs)
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(comment "register Rd implied from Rs")
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(attrs)
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(mode UINT)
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(subfields f-rd f-rs)
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(insert (sequence ()
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(set (ifield f-rd) (ifield f-rd-rs))
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(set (ifield f-rs) (ifield f-rd-rs))
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))
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(extract (sequence ()
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(set (ifield f-rd-rs) (ifield f-rs))
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))
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)
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(define-multi-ifield
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(name f-rd-rt)
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(comment "register Rd implied from Rt")
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(attrs)
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(mode UINT)
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(subfields f-rd f-rt)
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(insert (sequence ()
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(set (ifield f-rd) (ifield f-rd-rt))
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(set (ifield f-rt) (ifield f-rd-rt))
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))
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(extract (sequence ()
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(set (ifield f-rd-rt) (ifield f-rt))
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))
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)
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(define-multi-ifield
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(name f-rt-rs)
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(comment "register Rt implied from Rs")
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(attrs)
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(mode UINT)
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(subfields f-rt f-rs)
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(insert (sequence ()
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(set (ifield f-rt) (ifield f-rt-rs))
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(set (ifield f-rs) (ifield f-rt-rs))
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))
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(extract (sequence ()
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(set (ifield f-rd-rs) (ifield f-rs))
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))
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)
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(df f-jtarg "jump target field" (ABS-ADDR) 15 16 UINT
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((value pc) (srl USI (and USI value #x03FFFF) 2))
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((value pc) (or USI (and USI pc #xF0000000) (sll USI value 2))))
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(df f-jtargq10 "iq10 jump target field" (ABS-ADDR) 20 21 UINT
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((value pc) (srl SI (and SI value #x7FFFFF) 2))
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((value pc) (or SI (and SI pc #xF0000000) (sll SI value 2))))
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(df f-offset "pc offset field" (PCREL-ADDR) 15 16 INT
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; Actually, this is relative to the address of the delay slot.
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((value pc) (sra SI (sub SI value pc) 2))
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((value pc) (add SI (sll SI value 2) (add pc 4))))
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; Instruction fields that scarcely appear in instructions.
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(dnf f-count "count field" () 15 7)
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(dnf f-bytecount "byte count field" () 7 8)
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(dnf f-index "index field" () 8 9)
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(dnf f-mask "mask field" () 9 4)
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(dnf f-maskq10 "iq10 mask field" () 10 5)
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(dnf f-maskl "mask left field" () 4 5)
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(dnf f-excode "execcode field" () 25 20)
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(dnf f-rsrvd "reserved field" () 25 10)
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(dnf f-10-11 "bits 10:0" () 10 11)
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(dnf f-24-19 "bits 24:6" () 24 19)
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(dnf f-5 "bit 5" () 5 1)
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(dnf f-10 "bit 10" () 10 1)
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(dnf f-25 "bit 25" () 25 1)
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(dnf f-cam-z "cam global mask z" () 5 3)
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(dnf f-cam-y "cam operation y" () 2 3)
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(dnf f-cm-3func "CM 3 bit fn field" () 5 3)
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(dnf f-cm-4func "CM 4 bit fn field" () 5 4)
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(dnf f-cm-3z "CM 3Z field" () 1 2)
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(dnf f-cm-4z "CM 4Z field" () 2 3)
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; Enumerations.
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(define-normal-insn-enum
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opcodes "primary opcodes" () OP_ f-opcode
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(("SPECIAL" 0) ("REGIMM" 1) ("J" 2) ("JAL" 3) ("BEQ" 4) ("BNE" 5) ("BLEZ" 6) ("BGTZ" 7)
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("ADDI" 8) ("ADDIU" 9) ("SLTI" 10) ("SLTIU" 11) ("ANDI" 12) ("ORI" 13) ("XORI" 14) ("LUI" 15)
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("COP0" 16) ("COP1" 17) ("COP2" 18) ("COP3" 19) ("BEQL" 20) ("BNEL" 21) ("BLEZL" 22) ("BGTZL" 23)
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("BMB0" 24) ("BMB1" 25) ("BMB2" 26) ("BMB3" 27) ("BBI" 28) ("BBV" 29) ("BBIN" 30) ("BBVN" 31)
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("LB" 32) ("LH" 33) ("LW" 35) ("LBU" 36) ("LHU" 37) ("RAM" 39)
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("SB" 40) ("SH" 41) ("SW" 43) ("ANDOI" 44) ("BMB" 45) ("ORUI" 47)
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("LDW" 48)
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("SDW" 56) ("ANDOUI" 63))
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)
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(define-normal-insn-enum
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q10_opcodes "iq10-only primary opcodes" () OP10_ f-opcode
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(("BMB" 6) ("ORUI" 15) ("BMBL" 22) ("ANDOUI" 47) ("BBIL" 60) ("BBVL" 61) ("BBINL" 62) ("BBVNL" 63))
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)
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(define-normal-insn-enum
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regimm-functions "branch sub-opcodes" () FUNC_ f-rt
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(("BLTZ" 0) ("BGEZ" 1) ("BLTZL" 2) ("BGEZL" 3) ("BLEZ" 4) ("BGTZ" 5) ("BLEZL" 6) ("BGTZL" 7)
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("BRI" 8) ("BRV" 9) ("BCTX" 12)
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("BLTZAL" 16) ("BGEZAL" 17) ("BLTZALL" 18) ("BGEZALL" 19) ("BLEZAL" 20) ("BGTZAL" 21) ("BLEZALL" 22) ("BGTZALL" 23))
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)
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(define-normal-insn-enum
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functions "function sub-opcodes" () FUNC_ f-func
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(("SLL" 0) ("SLMV" 1) ("SRL" 2) ("SRA" 3) ("SLLV" 4) ("SRMV" 5) ("SRLV" 6) ("SRAV" 7)
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("JR" 8) ("JALR" 9) ("JCR" 10) ("SYSCALL" 12) ("BREAK" 13) ("SLEEP" 14)
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("ADD" 32) ("ADDU" 33) ("SUB" 34) ("SUBU" 35) ("AND" 36) ("OR" 37) ("XOR" 38) ("NOR" 39)
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("ADO16" 41) ("SLT" 42) ("SLTU" 43) ("MRGB" 45))
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)
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; iq10 special function sub-opcodes
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(define-normal-insn-enum
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q10s_functions "iq10-only special function sub-opcodes" () FUNC10_ f-func
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(("YIELD" 14) ("CNT1S" 46))
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)
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; coprocessor opcodes in concert with f-cp-grp
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(define-normal-insn-enum
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cop_functions "iq10 function sub-opcodes" () FUNC10_ f-func
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(("CFC" 0) ("LOCK" 1) ("CTC" 2) ("UNLK" 3) ("SWRD" 4) ("SWRDL" 5) ("SWWR" 6) ("SWWRU" 7)
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("RBA" 8) ("RBAL" 9) ("RBAR" 10) ("DWRD" 12) ("DWRDL" 13)
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("WBA" 16) ("WBAU" 17) ("WBAC" 18) ("CRC32" 20) ("CRC32B" 21)
|
|
|
|
|
|
("MCID" 32) ("DBD" 33) ("DBA" 34) ("DPWT" 35) ("AVAIL" 36) ("FREE" 37) ("CHKHDR" 38) ("TSTOD" 39)
|
|
|
|
|
|
("PKRLA" 40) ("PKRLAU" 41) ("PKRLAH" 42) ("PKRLAC" 43) ("CMPHDR" 44)
|
|
|
|
|
|
|
|
|
|
|
|
("CM64RS" 0) ("CM64RD" 1) ("CM64RI" 4) ("CM64CLR" 5)
|
|
|
|
|
|
("CM64SS" 8) ("CM64SD" 9) ("CM64SI" 12)
|
|
|
|
|
|
("CM64RA" 16) ("CM64RIA2" 20) ("CM128RIA2" 21)
|
|
|
|
|
|
("CM64SA" 24) ("CM64SIA2" 28) ("CM128SIA2" 29)
|
|
|
|
|
|
("CM32RS" 32) ("CM32RD" 33) ("CM32XOR" 34) ("CM32ANDN" 35) ("CM32RI" 36) ("CM128VSA" 38)
|
|
|
|
|
|
("CM32SS" 40) ("CM32SD" 41) ("CM32OR" 42) ("CM32AND" 43) ("CM32SI" 44)
|
|
|
|
|
|
("CM32RA" 48)
|
|
|
|
|
|
("CM32SA" 56) )
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
; coprocessor opcodes in concert with f-cp-grp
|
|
|
|
|
|
(define-normal-insn-enum
|
|
|
|
|
|
cop_cm128_4functions "iq10 function sub-opcodes" () FUNC10_ f-cm-4func
|
|
|
|
|
|
(("CM128RIA3" 4) ("CM128SIA3" 6))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(define-normal-insn-enum
|
|
|
|
|
|
cop_cm128_3functions "iq10 function sub-opcodes" () FUNC10_ f-cm-3func
|
|
|
|
|
|
(("CM128RIA4" 6) ("CM128SIA4" 7))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(define-normal-insn-enum
|
|
|
|
|
|
cop2_functions "iq10 coprocessor sub-opcodes" () FUNC10_ f-cp-op
|
|
|
|
|
|
(("PKRLI" 0) ("PKRLIU" 1) ("PKRLIH" 2) ("PKRLIC" 3) ("RBIR" 1) ("RBI" 2) ("RBIL" 3) ("WBIC" 5) ("WBI" 6) ("WBIU" 7))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(define-normal-insn-enum
|
|
|
|
|
|
cop3_cam_functions "iq10 coprocessor cam sub-opcodes" () FUNC10_ f-cp-op-10
|
|
|
|
|
|
(("CAM36" 16) ("CAM72" 17) ("CAM144" 18) ("CAM288" 19))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Attributes.
|
|
|
|
|
|
|
|
|
|
|
|
(define-attr
|
|
|
|
|
|
(for insn)
|
|
|
|
|
|
(type boolean)
|
|
|
|
|
|
(name YIELD-INSN)
|
|
|
|
|
|
(comment "insn generates a context yield")
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(define-attr
|
|
|
|
|
|
(for insn)
|
|
|
|
|
|
(type boolean)
|
|
|
|
|
|
(name LOAD-DELAY)
|
|
|
|
|
|
(comment "insn has a load delay")
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(define-attr
|
|
|
|
|
|
(for insn)
|
|
|
|
|
|
(type boolean)
|
|
|
|
|
|
(name EVEN-REG-NUM)
|
|
|
|
|
|
(comment "insn requires an even numbered register in rt(2000) or rd(10)")
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(define-attr
|
|
|
|
|
|
(for insn)
|
|
|
|
|
|
(type boolean)
|
|
|
|
|
|
(name UNSUPPORTED)
|
|
|
|
|
|
(comment "insn is unsupported")
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(define-pmacro (define-reg-use-attr regfield)
|
|
|
|
|
|
(define-attr
|
|
|
|
|
|
(for insn)
|
|
|
|
|
|
(type boolean)
|
|
|
|
|
|
(name (.sym USES- (.upcase regfield)))
|
|
|
|
|
|
(comment ("insn accesses register operand " regfield))))
|
|
|
|
|
|
|
2004-11-15 15:30:12 +01:00
|
|
|
|
(define-reg-use-attr "rd")
|
|
|
|
|
|
(define-reg-use-attr "rs")
|
|
|
|
|
|
(define-reg-use-attr "rt")
|
|
|
|
|
|
(define-reg-use-attr "r31")
|
2003-06-06 23:49:30 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Operands.
|
|
|
|
|
|
|
|
|
|
|
|
(dnop rs "register Rs" () h-gr f-rs)
|
|
|
|
|
|
(dnop rt "register Rt" () h-gr f-rt)
|
|
|
|
|
|
(dnop rd "register Rd" () h-gr f-rd)
|
|
|
|
|
|
(dnop rd-rs "register Rd from Rs" () h-gr f-rd-rs)
|
|
|
|
|
|
(dnop rd-rt "register Rd from Rt" () h-gr f-rd-rt)
|
|
|
|
|
|
(dnop rt-rs "register Rt from Rs" () h-gr f-rt-rs)
|
|
|
|
|
|
(dnop shamt "shift amount" () h-uint f-shamt)
|
|
|
|
|
|
(define-operand (name imm) (comment "immediate") (attrs)
|
|
|
|
|
|
(type h-uint) (index f-imm) (handlers (parse "imm")))
|
|
|
|
|
|
(dnop offset "pc-relative offset" () h-iaddr f-offset)
|
|
|
|
|
|
(dnop baseoff "base register offset" () h-iaddr f-imm)
|
|
|
|
|
|
(dnop jmptarg "jump target" () h-iaddr f-jtarg)
|
|
|
|
|
|
(dnop mask "mask" () h-uint f-mask)
|
|
|
|
|
|
(dnop maskq10 "iq10 mask" () h-uint f-maskq10)
|
|
|
|
|
|
(dnop maskl "mask left" () h-uint f-maskl)
|
|
|
|
|
|
(dnop count "count" () h-uint f-count)
|
2004-10-27 11:30:09 +02:00
|
|
|
|
(dnop _index "index" () h-uint f-index)
|
2003-06-06 23:49:30 +02:00
|
|
|
|
(dnop execode "execcode" () h-uint f-excode)
|
|
|
|
|
|
(dnop bytecount "byte count" () h-uint f-bytecount)
|
|
|
|
|
|
(dnop cam-y "cam global opn y" () h-uint f-cam-y)
|
|
|
|
|
|
(dnop cam-z "cam global mask z" () h-uint f-cam-z)
|
|
|
|
|
|
(dnop cm-3func "CM 3 bit fn field" () h-uint f-cm-3func)
|
|
|
|
|
|
(dnop cm-4func "CM 4 bit fn field" () h-uint f-cm-4func)
|
|
|
|
|
|
(dnop cm-3z "CM 3 bit Z field" () h-uint f-cm-3z)
|
|
|
|
|
|
(dnop cm-4z "CM 4 bit Z field" () h-uint f-cm-4z)
|
|
|
|
|
|
|
|
|
|
|
|
; Aliases for the rs and rt operands. This just makes the load/store
|
|
|
|
|
|
; insns easier to compare with the instruction set documentation.
|
|
|
|
|
|
|
|
|
|
|
|
(dnop base "base register" () h-gr f-rs)
|
|
|
|
|
|
(dnop maskr "mask right" () h-uint f-rs)
|
|
|
|
|
|
(dnop bitnum "bit number" () h-uint f-rt)
|
|
|
|
|
|
|
|
|
|
|
|
; For high(foo).
|
|
|
|
|
|
(define-operand
|
|
|
|
|
|
(name hi16)
|
|
|
|
|
|
(comment "high 16 bit immediate")
|
|
|
|
|
|
(attrs)
|
|
|
|
|
|
(type h-uint)
|
|
|
|
|
|
(index f-imm)
|
|
|
|
|
|
(handlers (parse "hi16"))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
; For low(foo).
|
|
|
|
|
|
(define-operand
|
|
|
|
|
|
(name lo16)
|
|
|
|
|
|
(comment "16 bit signed immediate, for low")
|
|
|
|
|
|
(attrs)
|
|
|
|
|
|
(type h-uint)
|
|
|
|
|
|
(index f-imm)
|
|
|
|
|
|
(handlers (parse "lo16"))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
; For negated imm.
|
|
|
|
|
|
(define-operand
|
|
|
|
|
|
(name mlo16)
|
|
|
|
|
|
(comment "negated 16 bit signed immediate")
|
|
|
|
|
|
(attrs)
|
|
|
|
|
|
(type h-uint)
|
|
|
|
|
|
(index f-imm)
|
|
|
|
|
|
(handlers (parse "mlo16"))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
; For iq10 jmps
|
|
|
|
|
|
; In the future, we'll want the j & jal to use the 21 bit target, with
|
|
|
|
|
|
; the upper five bits shifted up. For now, don't use this.
|
|
|
|
|
|
(define-operand
|
|
|
|
|
|
(name jmptargq10)
|
|
|
|
|
|
(comment "iq10 21-bit jump offset")
|
|
|
|
|
|
(attrs)
|
|
|
|
|
|
(type h-iaddr)
|
|
|
|
|
|
(index f-jtargq10)
|
|
|
|
|
|
(handlers (parse "jtargq10"))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Instructions.
|
|
|
|
|
|
|
|
|
|
|
|
; A pmacro for use in semantic bodies of unimplemented insns.
|
|
|
|
|
|
(define-pmacro (unimp mnemonic) (nop))
|
|
|
|
|
|
|
|
|
|
|
|
(define-pmacro (bitset? value bit-num)
|
|
|
|
|
|
(and value (sll 1 bit-num)))
|
|
|
|
|
|
|
|
|
|
|
|
(define-pmacro (bitclear? value bit-num)
|
|
|
|
|
|
(not (bitset? value bit-num)))
|
|
|
|
|
|
|
|
|
|
|
|
; Arithmetic/logic instructions.
|
|
|
|
|
|
|
|
|
|
|
|
(dni add2 "add registers" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"add ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rt rd-rs (f-shamt 0) FUNC_ADD)
|
|
|
|
|
|
(set rd-rs (add rt rd-rs))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni add "add registers" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"add $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_ADD)
|
|
|
|
|
|
(set rd (add rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(dni addi2 "add immediate" (ALIAS NO-DIS USES-RS USES-RT)
|
|
|
|
|
|
"addi ${rt-rs},$lo16"
|
|
|
|
|
|
(+ OP_ADDI rt-rs lo16)
|
|
|
|
|
|
(set rt-rs (add rt-rs (ext SI (trunc HI lo16))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni addi "add immediate" (USES-RS USES-RT)
|
|
|
|
|
|
"addi $rt,$rs,$lo16"
|
|
|
|
|
|
(+ OP_ADDI rs rt lo16)
|
|
|
|
|
|
(set rt (add rs (ext SI (trunc HI lo16))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni addiu2 "add immediate unsigned" (ALIAS NO-DIS USES-RS USES-RT)
|
|
|
|
|
|
"addiu ${rt-rs},$lo16"
|
|
|
|
|
|
(+ OP_ADDIU rt-rs lo16)
|
|
|
|
|
|
(set rt-rs (add rt-rs (ext SI (trunc HI lo16))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni addiu "add immediate unsigned" (USES-RS USES-RT)
|
|
|
|
|
|
"addiu $rt,$rs,$lo16"
|
|
|
|
|
|
(+ OP_ADDIU rs rt lo16)
|
|
|
|
|
|
(set rt (add rs (ext SI (trunc HI lo16))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni addu2 "add unsigned" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"addu ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_ADDU)
|
|
|
|
|
|
(set rd-rs (add rd-rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni addu "add unsigned" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"addu $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_ADDU)
|
|
|
|
|
|
(set rd (add rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni ado162 "add 16, ones complement" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"ado16 ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_ADO16)
|
|
|
|
|
|
(sequence ((HI high) (HI low))
|
|
|
|
|
|
(set low (add HI (and HI rd-rs #xFFFF) (and HI rt #xFFFF)))
|
|
|
|
|
|
(set high (add HI (srl rd-rs 16) (srl rt 16)))
|
|
|
|
|
|
(set rd-rs (or SI (sll SI high 16) low)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni ado16 "add 16, ones complement" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"ado16 $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_ADO16)
|
|
|
|
|
|
(sequence ((HI high) (HI low))
|
|
|
|
|
|
(set low (add HI (and HI rs #xFFFF) (and HI rt #xFFFF)))
|
|
|
|
|
|
(set high (add HI (srl rs 16) (srl rt 16)))
|
|
|
|
|
|
(set rd (or SI (sll SI high 16) low)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni and2 "and register" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"and ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_AND)
|
|
|
|
|
|
(set rd-rs (and rd-rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni and "and register" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"and $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_AND)
|
|
|
|
|
|
(set rd (and rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni andi2 "and immediate" (ALIAS NO-DIS USES-RS USES-RT)
|
|
|
|
|
|
"andi ${rt-rs},$lo16"
|
|
|
|
|
|
(+ OP_ANDI rt-rs lo16)
|
|
|
|
|
|
(set rt-rs (and rt-rs (zext SI lo16)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni andi "and immediate" (USES-RS USES-RT)
|
|
|
|
|
|
"andi $rt,$rs,$lo16"
|
|
|
|
|
|
(+ OP_ANDI rs rt lo16)
|
|
|
|
|
|
(set rt (and rs (zext SI lo16)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni andoi2 "and ones immediate" (ALIAS NO-DIS USES-RS USES-RT)
|
|
|
|
|
|
"andoi ${rt-rs},$lo16"
|
|
|
|
|
|
(+ OP_ANDOI rt-rs lo16)
|
|
|
|
|
|
(set rt-rs (and rt-rs (or #xFFFF0000 (ext SI (trunc HI lo16)))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni andoi "and ones immediate" (USES-RS USES-RT)
|
|
|
|
|
|
"andoi $rt,$rs,$lo16"
|
|
|
|
|
|
(+ OP_ANDOI rs rt lo16)
|
|
|
|
|
|
(set rt (and rs (or #xFFFF0000 (ext SI (trunc HI lo16)))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni nor2 "nor" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"nor ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_NOR)
|
|
|
|
|
|
(set rd-rs (inv (or rd-rs rt)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni nor "nor" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"nor $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_NOR)
|
|
|
|
|
|
(set rd (inv (or rs rt)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni or2 "or" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"or ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_OR)
|
|
|
|
|
|
(set rd-rs (or rd-rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni or "or" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"or $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_OR)
|
|
|
|
|
|
(set rd (or rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni ori2 "or immediate" (ALIAS NO-DIS USES-RS USES-RT)
|
|
|
|
|
|
"ori ${rt-rs},$lo16"
|
|
|
|
|
|
(+ OP_ORI rt-rs lo16)
|
|
|
|
|
|
(set rt-rs (or rt-rs (zext SI lo16)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni ori "or immediate" (USES-RS USES-RT)
|
|
|
|
|
|
"ori $rt,$rs,$lo16"
|
|
|
|
|
|
(+ OP_ORI rs rt lo16)
|
|
|
|
|
|
(set rt (or rs (zext SI lo16)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni ram "rotate and mask" (USES-RD USES-RT)
|
|
|
|
|
|
"ram $rd,$rt,$shamt,$maskl,$maskr"
|
|
|
|
|
|
(+ OP_RAM maskr rt rd shamt (f-5 0) maskl)
|
|
|
|
|
|
(sequence ()
|
|
|
|
|
|
(set rd (ror rt shamt))
|
|
|
|
|
|
(set rd (and rd (srl #xFFFFFFFF maskl)))
|
|
|
|
|
|
(set rd (and rd (sll #xFFFFFFFF maskr))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sll "shift left logical" (USES-RD USES-RT)
|
|
|
|
|
|
"sll $rd,$rt,$shamt"
|
|
|
|
|
|
(+ OP_SPECIAL (f-rs 0) rt rd shamt (f-func 0))
|
|
|
|
|
|
(set rd (sll rt shamt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sllv2 "shift left logical variable" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"sllv ${rd-rt},$rs"
|
|
|
|
|
|
(+ OP_SPECIAL rs rd-rt (f-shamt 0) FUNC_SLLV)
|
|
|
|
|
|
(set rd-rt (sll rd-rt (and rs #x1F)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sllv "shift left logical variable" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"sllv $rd,$rt,$rs"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SLLV)
|
|
|
|
|
|
(set rd (sll rt (and rs #x1F)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni slmv2 "shift left and mask variable" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"slmv ${rd-rt},$rs,$shamt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rd-rt shamt FUNC_SLMV)
|
|
|
|
|
|
(set rd-rt (and (sll rd-rt shamt) (srl #xFFFFFFFF rs)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni slmv "shift left and mask variable" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"slmv $rd,$rt,$rs,$shamt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd shamt FUNC_SLMV)
|
|
|
|
|
|
(set rd (and (sll rt shamt) (srl #xFFFFFFFF rs)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni slt2 "set if less than" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"slt ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rt rd-rs (f-shamt 0) FUNC_SLT)
|
|
|
|
|
|
(if (lt rd-rs rt)
|
|
|
|
|
|
(set rd-rs 1)
|
|
|
|
|
|
(set rd-rs 0))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni slt "set if less than" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"slt $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SLT)
|
|
|
|
|
|
(if (lt rs rt)
|
|
|
|
|
|
(set rd 1)
|
|
|
|
|
|
(set rd 0))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni slti2 "set if less than immediate" (ALIAS NO-DIS USES-RS USES-RT)
|
|
|
|
|
|
"slti ${rt-rs},$imm"
|
|
|
|
|
|
(+ OP_SLTI rt-rs imm)
|
|
|
|
|
|
(if (lt rt-rs (ext SI (trunc HI imm)))
|
|
|
|
|
|
(set rt-rs 1)
|
|
|
|
|
|
(set rt-rs 0))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni slti "set if less than immediate" (USES-RS USES-RT)
|
|
|
|
|
|
"slti $rt,$rs,$imm"
|
|
|
|
|
|
(+ OP_SLTI rs rt imm)
|
|
|
|
|
|
(if (lt rs (ext SI (trunc HI imm)))
|
|
|
|
|
|
(set rt 1)
|
|
|
|
|
|
(set rt 0))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sltiu2 "set if less than immediate unsigned" (ALIAS NO-DIS USES-RS USES-RT)
|
|
|
|
|
|
"sltiu ${rt-rs},$imm"
|
|
|
|
|
|
(+ OP_SLTIU rt-rs imm)
|
|
|
|
|
|
(if (ltu rt-rs (ext SI (trunc HI imm)))
|
|
|
|
|
|
(set rt-rs 1)
|
|
|
|
|
|
(set rt-rs 0))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sltiu "set if less than immediate unsigned" (USES-RS USES-RT)
|
|
|
|
|
|
"sltiu $rt,$rs,$imm"
|
|
|
|
|
|
(+ OP_SLTIU rs rt imm)
|
|
|
|
|
|
(if (ltu rs (ext SI (trunc HI imm)))
|
|
|
|
|
|
(set rt 1)
|
|
|
|
|
|
(set rt 0))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sltu2 "set if less than unsigned" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"sltu ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rd-rs rt (f-shamt 0) FUNC_SLTU)
|
|
|
|
|
|
(if (ltu rd-rs rt)
|
|
|
|
|
|
(set rd-rs 1)
|
|
|
|
|
|
(set rd-rs 0))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sltu "set if less than unsigned" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"sltu $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SLTU)
|
|
|
|
|
|
(if (ltu rs rt)
|
|
|
|
|
|
(set rd 1)
|
|
|
|
|
|
(set rd 0))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sra2 "shift right arithmetic" (ALIAS NO-DIS USES-RD USES-RT)
|
|
|
|
|
|
"sra ${rd-rt},$shamt"
|
|
|
|
|
|
(+ OP_SPECIAL (f-rs 0) rd-rt shamt FUNC_SRA)
|
|
|
|
|
|
(set rd-rt (sra rd-rt shamt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sra "shift right arithmetic" (USES-RD USES-RT)
|
|
|
|
|
|
"sra $rd,$rt,$shamt"
|
|
|
|
|
|
(+ OP_SPECIAL (f-rs 0) rt rd shamt FUNC_SRA)
|
|
|
|
|
|
(set rd (sra rt shamt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni srav2 "shift right arithmetic variable" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"srav ${rd-rt},$rs"
|
|
|
|
|
|
(+ OP_SPECIAL rs rd-rt (f-shamt 0) FUNC_SRAV)
|
|
|
|
|
|
(set rd-rt (sra rd-rt (and rs #x1F)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni srav "shift right arithmetic variable" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"srav $rd,$rt,$rs"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SRAV)
|
|
|
|
|
|
(set rd (sra rt (and rs #x1F)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni srl "shift right logical" (USES-RD USES-RT)
|
|
|
|
|
|
"srl $rd,$rt,$shamt"
|
|
|
|
|
|
(+ OP_SPECIAL (f-rs 0) rt rd shamt FUNC_SRL)
|
|
|
|
|
|
(set rd (srl rt shamt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni srlv2 "shift right logical variable" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"srlv ${rd-rt},$rs"
|
|
|
|
|
|
(+ OP_SPECIAL rs rd-rt (f-shamt 0) FUNC_SRLV)
|
|
|
|
|
|
(set rd-rt (srl rd-rt (and rs #x1F)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni srlv "shift right logical variable" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"srlv $rd,$rt,$rs"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SRLV)
|
|
|
|
|
|
(set rd (srl rt (and rs #x1F)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni srmv2 "shift right and mask variable" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"srmv ${rd-rt},$rs,$shamt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rd-rt shamt FUNC_SRMV)
|
|
|
|
|
|
(set rd-rt (and (srl rd-rt shamt) (sll #xFFFFFFFF rs)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni srmv "shift right and mask variable" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"srmv $rd,$rt,$rs,$shamt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd shamt FUNC_SRMV)
|
|
|
|
|
|
(set rd (and (srl rt shamt) (sll #xFFFFFFFF rs)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sub2 "subtract" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"sub ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rt rd-rs (f-shamt 0) FUNC_SUB)
|
|
|
|
|
|
(set rd-rs (sub rd-rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sub "subtract" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"sub $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SUB)
|
|
|
|
|
|
(set rd (sub rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni subu2 "subtract unsigned" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"subu ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rt rd-rs (f-shamt 0) FUNC_SUBU)
|
|
|
|
|
|
(set rd-rs (sub rd-rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni subu "subtract unsigned" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"subu $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_SUBU)
|
|
|
|
|
|
(set rd (sub rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni xor2 "exclusive or" (ALIAS NO-DIS USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"xor ${rd-rs},$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rt rd-rs (f-shamt 0) FUNC_XOR)
|
|
|
|
|
|
(set rd-rs (xor rd-rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni xor "exclusive or" (USES-RD USES-RS USES-RT)
|
|
|
|
|
|
"xor $rd,$rs,$rt"
|
|
|
|
|
|
(+ OP_SPECIAL rs rt rd (f-shamt 0) FUNC_XOR)
|
|
|
|
|
|
(set rd (xor rs rt))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni xori2 "exclusive or immediate" (ALIAS NO-DIS USES-RS USES-RT)
|
|
|
|
|
|
"xori ${rt-rs},$lo16"
|
|
|
|
|
|
(+ OP_XORI rt-rs lo16)
|
|
|
|
|
|
(set rt-rs (xor rt-rs (zext SI lo16)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni xori "exclusive or immediate" (USES-RS USES-RT)
|
|
|
|
|
|
"xori $rt,$rs,$lo16"
|
|
|
|
|
|
(+ OP_XORI rs rt lo16)
|
|
|
|
|
|
(set rt (xor rs (zext SI lo16)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Branch instructions.
|
|
|
|
|
|
|
|
|
|
|
|
(dni bbi "branch bit immediate" (USES-RS)
|
|
|
|
|
|
"bbi $rs($bitnum),$offset"
|
|
|
|
|
|
(+ OP_BBI rs bitnum offset)
|
|
|
|
|
|
(if (bitset? rs bitnum)
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bbin "branch bit immediate negated" (USES-RS)
|
|
|
|
|
|
"bbin $rs($bitnum),$offset"
|
|
|
|
|
|
(+ OP_BBIN rs bitnum offset)
|
|
|
|
|
|
(if (bitclear? rs bitnum)
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bbv "branch bit variable" (USES-RS USES-RT)
|
|
|
|
|
|
"bbv $rs,$rt,$offset"
|
|
|
|
|
|
(+ OP_BBV rs rt offset)
|
|
|
|
|
|
(if (bitset? rs (and rt #x1F))
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bbvn "branch bit variable negated" (USES-RS USES-RT)
|
|
|
|
|
|
"bbvn $rs,$rt,$offset"
|
|
|
|
|
|
(+ OP_BBVN rs rt offset)
|
|
|
|
|
|
(if (bitclear? rs (and rt #x1F))
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni beq "branch if equal" (USES-RS USES-RT)
|
|
|
|
|
|
"beq $rs,$rt,$offset"
|
|
|
|
|
|
(+ OP_BEQ rs rt offset)
|
|
|
|
|
|
(if (eq rs rt)
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni beql "branch if equal likely" (USES-RS USES-RT)
|
|
|
|
|
|
"beql $rs,$rt,$offset"
|
|
|
|
|
|
(+ OP_BEQL rs rt offset)
|
|
|
|
|
|
(if (eq rs rt)
|
|
|
|
|
|
(delay 1 (set pc offset))
|
|
|
|
|
|
(skip 1))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bgez "branch if greater than or equal to zero" (USES-RS)
|
|
|
|
|
|
"bgez $rs,$offset"
|
|
|
|
|
|
(+ OP_REGIMM rs FUNC_BGEZ offset)
|
|
|
|
|
|
(if (ge rs 0)
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bgezal "branch if greater than or equal to zero and link" (USES-RS USES-R31)
|
|
|
|
|
|
"bgezal $rs,$offset"
|
|
|
|
|
|
(+ OP_REGIMM rs FUNC_BGEZAL offset)
|
|
|
|
|
|
(if (ge rs 0)
|
|
|
|
|
|
(sequence ()
|
|
|
|
|
|
(set (reg h-gr 31) (add pc 8))
|
|
|
|
|
|
(delay 1 (set pc offset))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bgezall
|
|
|
|
|
|
"branch if greater than equal to zero and link likely" (USES-RS USES-R31)
|
|
|
|
|
|
"bgezall $rs,$offset"
|
|
|
|
|
|
(+ OP_REGIMM rs FUNC_BGEZALL offset)
|
|
|
|
|
|
(if (ge rs 0)
|
|
|
|
|
|
(sequence ()
|
|
|
|
|
|
(set (reg h-gr 31) (add pc 8))
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
(skip 1))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bgezl "branch if greater or equal to zero likely" (USES-RS)
|
|
|
|
|
|
"bgezl $rs,$offset"
|
|
|
|
|
|
(+ OP_REGIMM rs FUNC_BGEZL offset)
|
|
|
|
|
|
(if (ge rs 0)
|
|
|
|
|
|
(delay 1 (set pc offset))
|
|
|
|
|
|
(skip 1))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bltz "branch if less than zero" (USES-RS)
|
|
|
|
|
|
"bltz $rs,$offset"
|
|
|
|
|
|
(+ OP_REGIMM rs FUNC_BLTZ offset)
|
|
|
|
|
|
(if (lt rs 0)
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bltzl "branch if less than zero likely" (USES-RS)
|
|
|
|
|
|
"bltzl $rs,$offset"
|
|
|
|
|
|
(+ OP_REGIMM rs FUNC_BLTZL offset)
|
|
|
|
|
|
(if (lt rs 0)
|
|
|
|
|
|
(delay 1 (set pc offset))
|
|
|
|
|
|
(skip 1))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bltzal "branch if less than zero and link" (USES-RS USES-R31)
|
|
|
|
|
|
"bltzal $rs,$offset"
|
|
|
|
|
|
(+ OP_REGIMM rs FUNC_BLTZAL offset)
|
|
|
|
|
|
(if (lt rs 0)
|
|
|
|
|
|
(sequence ()
|
|
|
|
|
|
(set (reg h-gr 31) (add pc 8))
|
|
|
|
|
|
(delay 1 (set pc offset))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bltzall "branch if less than zero and link likely" (USES-RS USES-R31)
|
|
|
|
|
|
"bltzall $rs,$offset"
|
|
|
|
|
|
(+ OP_REGIMM rs FUNC_BLTZALL offset)
|
|
|
|
|
|
(if (lt rs 0)
|
|
|
|
|
|
(sequence ()
|
|
|
|
|
|
(set (reg h-gr 31) (add pc 8))
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
(skip 1))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bmb0 "branch if matching byte-lane 0" (USES-RS USES-RT)
|
|
|
|
|
|
"bmb0 $rs,$rt,$offset"
|
|
|
|
|
|
(+ OP_BMB0 rs rt offset)
|
|
|
|
|
|
(if (eq (and rs #xFF) (and rt #xFF))
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bmb1 "branch if matching byte-lane 1" (USES-RS USES-RT)
|
|
|
|
|
|
"bmb1 $rs,$rt,$offset"
|
|
|
|
|
|
(+ OP_BMB1 rs rt offset)
|
|
|
|
|
|
(if (eq (and rs #xFF00) (and rt #xFF00))
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bmb2 "branch if matching byte-lane 2" (USES-RS USES-RT)
|
|
|
|
|
|
"bmb2 $rs,$rt,$offset"
|
|
|
|
|
|
(+ OP_BMB2 rs rt offset)
|
|
|
|
|
|
(if (eq (and rs #xFF0000) (and rt #xFF0000))
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bmb3 "branch if matching byte-lane 3" (USES-RS USES-RT)
|
|
|
|
|
|
"bmb3 $rs,$rt,$offset"
|
|
|
|
|
|
(+ OP_BMB3 rs rt offset)
|
|
|
|
|
|
(if (eq (and rs #xFF000000) (and rt #xFF000000))
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bne "branch if not equal" (USES-RS USES-RT)
|
|
|
|
|
|
"bne $rs,$rt,$offset"
|
|
|
|
|
|
(+ OP_BNE rs rt offset)
|
|
|
|
|
|
(if (ne rs rt)
|
|
|
|
|
|
(delay 1 (set pc offset)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni bnel "branch if not equal likely" (USES-RS USES-RT)
|
|
|
|
|
|
"bnel $rs,$rt,$offset"
|
|
|
|
|
|
(+ OP_BNEL rs rt offset)
|
|
|
|
|
|
(if (ne rs rt)
|
|
|
|
|
|
(delay 1 (set pc offset))
|
|
|
|
|
|
(skip 1))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Jump instructions.
|
|
|
|
|
|
; Might as well jump!
|
|
|
|
|
|
|
|
|
|
|
|
(dni jalr "jump and link register" (USES-RD USES-RS)
|
|
|
|
|
|
"jalr $rd,$rs"
|
|
|
|
|
|
(+ OP_SPECIAL rs (f-rt 0) rd (f-shamt 0) FUNC_JALR)
|
|
|
|
|
|
(delay 1
|
|
|
|
|
|
(sequence ()
|
|
|
|
|
|
(set rd (add pc 8))
|
|
|
|
|
|
(set pc rs)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni jr "jump register" (USES-RS)
|
|
|
|
|
|
"jr $rs"
|
|
|
|
|
|
(+ OP_SPECIAL rs (f-rt 0) (f-rd 0) (f-shamt 0) FUNC_JR)
|
|
|
|
|
|
(delay 1 (set pc rs))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Load instructions.
|
|
|
|
|
|
|
|
|
|
|
|
(dni lb "load byte" (LOAD-DELAY USES-RS USES-RT)
|
|
|
|
|
|
"lb $rt,$lo16($base)"
|
|
|
|
|
|
(+ OP_LB base rt lo16)
|
|
|
|
|
|
(set rt (ext WI (mem QI (add base (ext SI (trunc HI lo16))))))
|
|
|
|
|
|
; (sequence ((SI addr) (SI word))
|
|
|
|
|
|
; (set addr (add base lo16))
|
|
|
|
|
|
; (set word (mem SI (and addr (inv 3))))
|
|
|
|
|
|
; (set word (srl word (sll (and addr 2) 3)))
|
|
|
|
|
|
; (set rt (ext SI word)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni lbu "load byte unsigned" (LOAD-DELAY USES-RS USES-RT)
|
|
|
|
|
|
"lbu $rt,$lo16($base)"
|
|
|
|
|
|
(+ OP_LBU base rt lo16)
|
|
|
|
|
|
(set rt (zext WI (mem QI (add base (ext SI (trunc HI lo16))))))
|
|
|
|
|
|
; (sequence ((SI addr) (SI word))
|
|
|
|
|
|
; (set addr (add base lo16))
|
|
|
|
|
|
; (set word (mem SI (and addr (inv 3))))
|
|
|
|
|
|
; (set rt (srl word (sll (and addr 2) 3))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni lh "load half word" (LOAD-DELAY USES-RS USES-RT)
|
|
|
|
|
|
"lh $rt,$lo16($base)"
|
|
|
|
|
|
(+ OP_LH base rt lo16)
|
|
|
|
|
|
(set rt (ext WI (mem HI (add base (ext SI (trunc HI lo16))))))
|
|
|
|
|
|
; (sequence ((SI addr) (HI word))
|
|
|
|
|
|
; (set addr (add base lo16))
|
|
|
|
|
|
; (set word (mem SI (and addr (inv 3))))
|
|
|
|
|
|
; (set word (srl word (sll (and addr 1) 4)))
|
|
|
|
|
|
; (set rt (ext SI word)))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni lhu "load half word unsigned" (LOAD-DELAY USES-RS USES-RT)
|
|
|
|
|
|
"lhu $rt,$lo16($base)"
|
|
|
|
|
|
(+ OP_LHU base rt lo16)
|
|
|
|
|
|
(set rt (zext WI (mem HI (add base (ext SI (trunc HI lo16))))))
|
|
|
|
|
|
; (sequence ((SI addr) (SI word))
|
|
|
|
|
|
; (set addr (add base lo16))
|
|
|
|
|
|
; (set word (mem SI (and addr (inv 3))))
|
|
|
|
|
|
; (set rt (srl word (sll (and addr 1) 4))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni lui "load upper immediate" (USES-RT)
|
|
|
|
|
|
"lui $rt,$hi16"
|
|
|
|
|
|
(+ OP_LUI (f-rs 0) rt hi16)
|
|
|
|
|
|
(set rt (sll hi16 16))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni lw "load word" (LOAD-DELAY USES-RS USES-RT)
|
|
|
|
|
|
"lw $rt,$lo16($base)"
|
|
|
|
|
|
(+ OP_LW base rt lo16)
|
|
|
|
|
|
(set rt (mem SI (add base (ext SI (trunc HI lo16)))))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Store instructions.
|
|
|
|
|
|
|
|
|
|
|
|
(dni sb "store byte" (USES-RS USES-RT)
|
|
|
|
|
|
"sb $rt,$lo16($base)"
|
|
|
|
|
|
(+ OP_SB base rt lo16)
|
|
|
|
|
|
(set (mem QI (add base (ext SI (trunc HI lo16)))) (and QI rt #xFF))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sh "store half word" (USES-RS USES-RT)
|
|
|
|
|
|
"sh $rt,$lo16($base)"
|
|
|
|
|
|
(+ OP_SH base rt lo16)
|
|
|
|
|
|
(set (mem HI (add base (ext SI (trunc HI lo16)))) (and HI rt #xFFFF))
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni sw "store word" (USES-RS USES-RT)
|
|
|
|
|
|
"sw $rt,$lo16($base)"
|
|
|
|
|
|
(+ OP_SW base rt lo16)
|
|
|
|
|
|
(set (mem SI (add base (ext SI (trunc HI lo16)))) rt)
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Special instructions for simulation/debugging
|
|
|
|
|
|
(dni break "breakpoint" ()
|
|
|
|
|
|
"break"
|
|
|
|
|
|
(+ OP_SPECIAL (f-rs 0) (f-rt 0) (f-rd 0) (f-shamt 0) FUNC_BREAK)
|
|
|
|
|
|
(c-call VOID "do_break" pc)
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
(dni syscall "system call" (YIELD-INSN)
|
|
|
|
|
|
"syscall"
|
|
|
|
|
|
(+ OP_SPECIAL execode (f-func 12))
|
|
|
|
|
|
(c-call VOID "do_syscall")
|
|
|
|
|
|
())
|
|
|
|
|
|
|
|
|
|
|
|
; Macro instructions, common to iq10 & iq2000
|
|
|
|
|
|
|
|
|
|
|
|
(dnmi nop "nop" ()
|
|
|
|
|
|
"nop"
|
|
|
|
|
|
(emit sll (rd 0) (rt 0) (shamt 0))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(dnmi li "load immediate" (USES-RS NO-DIS)
|
|
|
|
|
|
"li $rs,$imm"
|
|
|
|
|
|
(emit ori (rt 0) rs imm)
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(dnmi move "move" (USES-RD USES-RT NO-DIS)
|
|
|
|
|
|
"move $rd,$rt"
|
|
|
|
|
|
(emit or rd (rs 0) rt)
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(dnmi lb-base-0 "load byte - implied base 0" (USES-RT NO-DIS)
|
|
|
|
|
|
"lb $rt,$lo16"
|
|
|
|
|
|
(emit lb rt lo16 (base 0))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(dnmi lbu-base-0 "load byte unsigned - implied base 0" (USES-RT NO-DIS)
|
|
|
|
|
|
"lbu $rt,$lo16"
|
|
|
|
|
|
(emit lbu rt lo16 (base 0))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(dnmi lh-base-0 "load half - implied base 0" (USES-RT NO-DIS)
|
|
|
|
|
|
"lh $rt,$lo16"
|
|
|
|
|
|
(emit lh rt lo16 (base 0))
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
(dnmi lw-base-0 "load word - implied base 0" (USES-RT NO-DIS)
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"lw $rt,$lo16"
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(emit lw rt lo16 (base 0))
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)
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(dnmi m-add "add immediate" (USES-RS USES-RT NO-DIS)
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"add $rt,$rs,$lo16"
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(emit addi rt rs lo16))
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(dnmi m-addu "add immediate unsigned" (USES-RS USES-RT NO-DIS)
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"addu $rt,$rs,$lo16"
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(emit addiu rt rs lo16)
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)
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(dnmi m-and "and immediate" (USES-RS USES-RT NO-DIS)
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"and $rt,$rs,$lo16"
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(emit andi rt rs lo16)
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)
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(dnmi m-j "jump register" (USES-RS NO-DIS)
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"j $rs"
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(emit jr rs)
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)
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(dnmi m-or "or immediate" (USES-RS USES-RT NO-DIS)
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"or $rt,$rs,$lo16"
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(emit ori rt rs lo16)
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)
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(dnmi m-sll "shift left logical" (USES-RD USES-RT USES-RS NO-DIS)
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"sll $rd,$rt,$rs"
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(emit sllv rd rt rs)
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)
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(dnmi m-slt "slt immediate" (USES-RS USES-RT NO-DIS)
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"slt $rt,$rs,$imm"
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(emit slti rt rs imm)
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)
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(dnmi m-sltu "sltu immediate" (USES-RS USES-RT NO-DIS)
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"sltu $rt,$rs,$imm"
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(emit sltiu rt rs imm)
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)
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(dnmi m-sra "shift right arithmetic" (USES-RD USES-RT USES-RS NO-DIS)
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"sra $rd,$rt,$rs"
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(emit srav rd rt rs)
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)
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(dnmi m-srl "shift right logical" (USES-RD USES-RT USES-RS NO-DIS)
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"srl $rd,$rt,$rs"
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(emit srlv rd rt rs)
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)
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(dnmi not "not" (USES-RD USES-RT NO-DIS)
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"not $rd,$rt"
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(emit nor rd (rs 0) rt)
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)
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(dnmi subi "sub immediate" (USES-RS USES-RT NO-DIS)
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"subi $rt,$rs,$mlo16"
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(emit addiu rt rs mlo16)
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)
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(dnmi m-sub "subtract immediate" (USES-RS USES-RT NO-DIS)
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"sub $rt,$rs,$mlo16"
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(emit addiu rt rs mlo16)
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)
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(dnmi m-subu "subtract unsigned" (USES-RS USES-RT NO-DIS)
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"subu $rt,$rs,$mlo16"
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|
(emit addiu rt rs mlo16)
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)
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(dnmi sb-base-0 "store byte - implied base 0" (USES-RT NO-DIS)
|
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|
|
"sb $rt,$lo16"
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|
(emit sb rt lo16 (base 0))
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|
)
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(dnmi sh-base-0 "store half - implied base 0" (USES-RT NO-DIS)
|
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|
"sh $rt,$lo16"
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|
(emit sh rt lo16 (base 0))
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|
)
|
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|
(dnmi sw-base-0 "store word - implied base 0" (USES-RT NO-DIS)
|
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|
|
"sw $rt,$lo16"
|
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|
|
(emit sw rt lo16 (base 0))
|
|
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|
|
|
)
|
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|
(dnmi m-xor "xor immediate" (USES-RS USES-RT NO-DIS)
|
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|
|
"xor $rt,$rs,$lo16"
|
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|
|
(emit xori rt rs lo16)
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)
|
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(if (keep-mach? (iq2000))
|
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|
|
(include "iq2000m.cpu"))
|
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|
(if (keep-mach? (iq10))
|
|
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|
|
(include "iq10.cpu"))
|
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