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or1korbis.cpu
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; OpenRISC Basic Instruction Set 32-bit (ORBIS) -*- Scheme -*-
; Copyright 2000-2014 Free Software Foundation, Inc.
; Contributed for OR32 by Johan Rydberg, jrydberg@opencores.org
; Modified by Julius Baxter, juliusbaxter@gmail.com
; Modified by Peter Gavin, pgavin@gmail.com
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 3 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program; if not, see <http://www.gnu.org/licenses/>
; Instruction fields.
; Hardware for immediate operands
(dnh h-simm16 "16-bit signed immediate" ((MACH ORBIS-MACHS)) (immediate (INT 16)) () () ())
(dnh h-uimm16 "16-bit unsigned immediate" () (immediate (UINT 16)) () () ())
(dnh h-uimm6 "6-bit unsigned immediate" () (immediate (UINT 6)) () () ())
; Hardware for the (internal) atomic registers
(dsh h-atomic-reserve "atomic reserve flag" () (register BI))
(dsh h-atomic-address "atomic reserve address" () (register SI))
; Instruction classes.
(dnf f-opcode "insn opcode" ((MACH ORBIS-MACHS)) 31 6)
; Register fields.
(dnf f-r1 "r1" ((MACH ORBIS-MACHS)) 25 5)
(dnf f-r2 "r2" ((MACH ORBIS-MACHS)) 20 5)
(dnf f-r3 "r3" ((MACH ORBIS-MACHS)) 15 5)
; Sub fields
(dnf f-op-25-2 "op-25-2" ((MACH ORBIS-MACHS)) 25 2) ;; nop
(dnf f-op-25-5 "op-25-5" ((MACH ORBIS-MACHS)) 25 5) ;; sys, trap, *sync, sf*
(dnf f-op-16-1 "op-16-1" ((MACH ORBIS-MACHS)) 16 1) ;; movhi,macrc
(dnf f-op-7-4 "op-7-4" ((MACH ORBIS-MACHS)) 7 4)
(dnf f-op-3-4 "op-3-4" ((MACH ORBIS-MACHS)) 3 4)
(dnf f-op-9-2 "op-9-2" ((MACH ORBIS-MACHS)) 9 2) ;; alu ops upper opcode
(dnf f-op-9-4 "op-9-4" ((MACH ORBIS-MACHS)) 9 4) ;;
(dnf f-op-7-8 "op-7-8" ((MACH ORBIS-MACHS)) 7 8)
(dnf f-op-7-2 "op-7-2" ((MACH ORBIS-MACHS)) 7 2) ;; alu lower upper opc,shroti
; Reserved fields
(dnf f-resv-25-26 "resv-25-26" ((MACH ORBIS-MACHS) RESERVED) 25 26)
(dnf f-resv-25-10 "resv-25-10" ((MACH ORBIS-MACHS) RESERVED) 25 10)
(dnf f-resv-25-5 "resv-25-5" ((MACH ORBIS-MACHS) RESERVED) 25 5)
(dnf f-resv-23-8 "resv-23-8" ((MACH ORBIS-MACHS) RESERVED) 23 8)
(dnf f-resv-20-21 "resv-20-21" ((MACH ORBIS-MACHS) RESERVED) 20 21)
(dnf f-resv-20-5 "resv-20-5" ((MACH ORBIS-MACHS) RESERVED) 20 5)
(dnf f-resv-20-4 "resv-20-4" ((MACH ORBIS-MACHS) RESERVED) 20 4)
(dnf f-resv-15-8 "resv-15-8" ((MACH ORBIS-MACHS) RESERVED) 15 8)
(dnf f-resv-15-6 "resv-15-6" ((MACH ORBIS-MACHS) RESERVED) 15 6)
(dnf f-resv-10-11 "resv-10-11" ((MACH ORBIS-MACHS) RESERVED) 10 11)
(dnf f-resv-10-7 "resv-10-7" ((MACH ORBIS-MACHS) RESERVED) 10 7)
(dnf f-resv-10-3 "resv-10-3" ((MACH ORBIS-MACHS) RESERVED) 10 3)
(dnf f-resv-10-1 "resv-10-1" ((MACH ORBIS-MACHS) RESERVED) 10 1)
(dnf f-resv-7-4 "resv-7-4" ((MACH ORBIS-MACHS) RESERVED) 7 4)
(dnf f-resv-5-2 "resv-5-2" ((MACH ORBIS-MACHS) RESERVED) 5 2)
(dnf f-imm16-25-5 "imm16-25-5" ((MACH ORBIS-MACHS)) 25 5)
(dnf f-imm16-10-11 "imm16-10-11" ((MACH ORBIS-MACHS)) 10 11)
; PC relative, 26-bit (2 shifted to right)
(df f-disp26
"disp26"
((MACH ORBIS-MACHS) PCREL-ADDR)
25
26
INT
((value pc) (sra SI (sub IAI value pc) (const 2)))
((value pc) (add IAI (sll IAI value (const 2)) pc))
)
; Immediates.
(dnf f-uimm16 "uimm16" ((MACH ORBIS-MACHS)) 15 16)
(df f-simm16 "simm16" ((MACH ORBIS-MACHS) SIGN-OPT) 15 16 INT #f #f)
(dnf f-uimm6 "uimm6" ((MACH ORBIS-MACHS)) 5 6) ;; shroti
(define-multi-ifield
(name f-uimm16-split)
(comment "16-bit split unsigned immediate")
(attrs (MACH ORBIS-MACHS))
(mode UINT)
(subfields f-imm16-25-5 f-imm16-10-11)
(insert (sequence ()
(set (ifield f-imm16-25-5)
(and (srl (ifield f-uimm16-split)
(const 11))
(const #x1f)))
(set (ifield f-imm16-10-11)
(and (ifield f-uimm16-split)
(const #x7ff)))))
(extract
(set (ifield f-uimm16-split)
(trunc UHI
(or (sll (ifield f-imm16-25-5)
(const 11))
(ifield f-imm16-10-11)))))
)
(define-multi-ifield
(name f-simm16-split)
(comment "16-bit split signed immediate")
(attrs (MACH ORBIS-MACHS) SIGN-OPT)
(mode INT)
(subfields f-imm16-25-5 f-imm16-10-11)
(insert (sequence ()
(set (ifield f-imm16-25-5)
(and (sra (ifield f-simm16-split)
(const 11))
(const #x1f)))
(set (ifield f-imm16-10-11)
(and (ifield f-simm16-split)
(const #x7ff)))))
(extract
(set (ifield f-simm16-split)
(trunc HI
(or (sll (ifield f-imm16-25-5)
(const 11))
(ifield f-imm16-10-11)))))
)
; Enums.
; insn-opcode: bits 31-26
(define-normal-insn-enum
insn-opcode "insn main opcode enums" ((MACH ORBIS-MACHS)) OPC_ f-opcode
(("J" #x00)
("JAL" #x01)
("BNF" #x03)
("BF" #x04)
("NOP" #x05)
("MOVHIMACRC" #x06)
("SYSTRAPSYNCS" #x08)
("RFE" #x09)
("VECTOR" #x0a)
("JR" #x11)
("JALR" #x12)
("MACI" #x13)
("LWA" #x1b)
("CUST1" #x1c)
("CUST2" #x1d)
("CUST3" #x1e)
("CUST4" #x1f)
("LD" #x20)
("LWZ" #x21)
("LWS" #x22)
("LBZ" #x23)
("LBS" #x24)
("LHZ" #x25)
("LHS" #x26)
("ADDI" #x27)
("ADDIC" #x28)
("ANDI" #x29)
("ORI" #x2a)
("XORI" #x2b)
("MULI" #x2c)
("MFSPR" #x2d)
("SHROTI" #x2e)
("SFI" #x2f)
("MTSPR" #x30)
("MAC" #x31)
("FLOAT" #x32)
("SWA" #x33)
("SD" #x34)
("SW" #x35)
("SB" #x36)
("SH" #x37)
("ALU" #x38)
("SF" #x39)
("CUST5" #x3c)
("CUST6" #x3d)
("CUST7" #x3e)
("CUST8" #x3f)
)
)
(define-normal-insn-enum insn-opcode-systrapsyncs
"systrapsync insn opcode enums" ((MACH ORBIS-MACHS))
OPC_SYSTRAPSYNCS_ f-op-25-5
(("SYSCALL" #x00 )
("TRAP" #x08 )
("MSYNC" #x10 )
("PSYNC" #x14 )
("CSYNC" #x18 )
)
)
(define-normal-insn-enum insn-opcode-movehimacrc
"movhi/macrc insn opcode enums" ((MACH ORBIS-MACHS))
OPC_MOVHIMACRC_ f-op-16-1
(("MOVHI" #x0)
("MACRC" #x1)
)
)
(define-normal-insn-enum insn-opcode-mac
"multiply/accumulate insn opcode enums" ((MACH ORBIS-MACHS))
OPC_MAC_ f-op-3-4
(("MAC" #x1)
("MSB" #x2)
)
)
(define-normal-insn-enum insn-opcode-shorts
"shift/rotate insn opcode enums" ((MACH ORBIS-MACHS))
OPC_SHROTS_ f-op-7-2
(("SLL" #x0 )
("SRL" #x1 )
("SRA" #x2 )
("ROR" #x3 )
)
)
(define-normal-insn-enum insn-opcode-extbhs
"extend byte/half opcode enums" ((MACH ORBIS-MACHS))
OPC_EXTBHS_ f-op-9-4
(("EXTHS" #x0)
("EXTBS" #x1)
("EXTHZ" #x2)
("EXTBZ" #x3)
)
)
(define-normal-insn-enum insn-opcode-extws
"extend word opcode enums" ((MACH ORBIS-MACHS))
OPC_EXTWS_ f-op-9-4
(("EXTWS" #x0)
("EXTWZ" #x1)
)
)
(define-normal-insn-enum insn-opcode-alu-regreg
"alu reg/reg insn opcode enums" ((MACH ORBIS-MACHS))
OPC_ALU_REGREG_ f-op-3-4
(("ADD" #x0)
("ADDC" #x1)
("SUB" #x2)
("AND" #x3)
("OR" #x4)
("XOR" #x5)
("MUL" #x6)
("SHROT" #x8)
("DIV" #x9)
("DIVU" #xA)
("MULU" #xB)
("EXTBH" #xC)
("EXTW" #xD)
("CMOV" #xE)
("FFL1" #xF)
)
)
(define-normal-insn-enum insn-opcode-setflag
"setflag insn opcode enums" ((MACH ORBIS-MACHS))
OPC_SF_ f-op-25-5
(("EQ" #x00)
("NE" #x01)
("GTU" #x02)
("GEU" #x03)
("LTU" #x04)
("LEU" #x05)
("GTS" #x0A)
("GES" #x0B)
("LTS" #x0C)
("LES" #x0D)
)
)
; Instruction operands.
(dnop sys-sr "supervision register" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-sr f-nil)
(dnop sys-esr0 "exception supervision register 0" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-esr0 f-nil)
(dnop sys-epcr0 "exception PC register 0" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-epcr0 f-nil)
(dnop sys-sr-lee "SR little endian enable bit" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-sr-lee f-nil)
(dnop sys-sr-f "SR flag bit" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-sr-f f-nil)
(dnop sys-sr-cy "SR carry bit" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-sr-cy f-nil)
(dnop sys-sr-ov "SR overflow bit" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-sr-ov f-nil)
(dnop sys-sr-ove "SR overflow exception enable bit" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-sr-ove f-nil)
(dnop sys-cpucfgr-ob64s "CPUCFGR ORBIS64 supported bit" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-cpucfgr-ob64s f-nil)
(dnop sys-cpucfgr-nd "CPUCFGR no delay bit" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-cpucfgr-nd f-nil)
(dnop sys-fpcsr-rm "floating point round mode" ((MACH ORBIS-MACHS) SEM-ONLY) h-sys-fpcsr-rm f-nil)
(dnop mac-machi "MAC HI result register" ((MACH ORBIS-MACHS) SEM-ONLY) h-mac-machi f-nil)
(dnop mac-maclo "MAC LO result register" ((MACH ORBIS-MACHS) SEM-ONLY) h-mac-maclo f-nil)
(dnop atomic-reserve "atomic reserve flag" ((MACH ORBIS-MACHS) SEM-ONLY) h-atomic-reserve f-nil)
(dnop atomic-address "atomic address" ((MACH ORBIS-MACHS) SEM-ONLY) h-atomic-address f-nil)
(dnop uimm6 "uimm6" ((MACH ORBIS-MACHS)) h-uimm6 f-uimm6)
(dnop rD "destination register" ((MACH ORBIS-MACHS)) h-gpr f-r1)
(dnop rA "source register A" ((MACH ORBIS-MACHS)) h-gpr f-r2)
(dnop rB "source register B" ((MACH ORBIS-MACHS)) h-gpr f-r3)
(define-operand
(name disp26)
(comment "pc-rel 26 bit")
(attrs (MACH ORBIS-MACHS))
(type h-iaddr)
(index f-disp26)
(handlers (parse "disp26"))
)
(define-operand
(name simm16)
(comment "16-bit signed immediate")
(attrs (MACH ORBIS-MACHS) SIGN-OPT)
(type h-simm16)
(index f-simm16)
(handlers (parse "simm16"))
)
(define-operand
(name uimm16)
(comment "16-bit unsigned immediate")
(attrs (MACH ORBIS-MACHS))
(type h-uimm16)
(index f-uimm16)
(handlers (parse "uimm16"))
)
(define-operand
(name simm16-split)
(comment "split 16-bit signed immediate")
(attrs (MACH ORBIS-MACHS) SIGN-OPT)
(type h-simm16)
(index f-simm16-split)
(handlers (parse "simm16"))
)
(define-operand
(name uimm16-split)
(comment "split 16-bit unsigned immediate")
(attrs (MACH ORBIS-MACHS))
(type h-uimm16)
(index f-uimm16-split)
(handlers (parse "uimm16"))
)
; Instructions.
; Branch releated instructions
(define-pmacro (cti-link-return)
(set IAI (reg h-gpr 9) (add pc (if sys-cpucfgr-nd 4 8)))
)
(define-pmacro (cti-transfer-control condition target)
;; this mess is necessary because we're
;; skipping the delay slot, but it's
;; actually the start of the next basic
;; block
(sequence ()
(if condition
(delay 1 (set IAI pc target))
(if sys-cpucfgr-nd
(delay 1 (set IAI pc (add pc 4))))
)
(if sys-cpucfgr-nd
(skip 1)
)
)
)
(define-pmacro
(define-cti
cti-name
cti-comment
cti-attrs
cti-syntax
cti-format
cti-semantics)
(begin
(dni
cti-name
cti-comment
(.splice (MACH ORBIS-MACHS) DELAYED-CTI NOT-IN-DELAY-SLOT (.unsplice cti-attrs))
cti-syntax
cti-format
(cti-semantics)
()
)
)
)
(define-cti
l-j
"jump (pc-relative iaddr)"
(!COND-CTI UNCOND-CTI)
"l.j ${disp26}"
(+ OPC_J disp26)
(.pmacro ()
(cti-transfer-control 1 disp26)
)
)
(define-cti
l-jal
"jump and link (pc-relative iaddr)"
(!COND-CTI UNCOND-CTI)
"l.jal ${disp26}"
(+ OPC_JAL disp26)
(.pmacro ()
(sequence ()
(cti-link-return)
(cti-transfer-control 1 disp26)
)
)
)
(define-cti
l-jr
"jump register (absolute iaddr)"
(!COND-CTI UNCOND-CTI)
"l.jr $rB"
(+ OPC_JR (f-resv-25-10 0) rB (f-resv-10-11 0))
(.pmacro ()
(cti-transfer-control 1 rB)
)
)
(define-cti
l-jalr
"jump register and link (absolute iaddr)"
(!COND-CTI UNCOND-CTI)
"l.jalr $rB"
(+ OPC_JALR (f-resv-25-10 0) rB (f-resv-10-11 0) )
(.pmacro ()
(sequence ()
(cti-link-return)
(cti-transfer-control 1 rB)
)
)
)
(define-cti
l-bnf
"branch if condition bit not set (pc relative iaddr)"
(COND-CTI !UNCOND-CTI)
"l.bnf ${disp26}"
(+ OPC_BNF disp26)
(.pmacro ()
(cti-transfer-control (not sys-sr-f) disp26)
)
)
(define-cti
l-bf
"branch if condition bit set (pc relative iaddr)"
(COND-CTI !UNCOND-CTI)
"l.bf ${disp26}"
(+ OPC_BF disp26)
(.pmacro ()
(cti-transfer-control sys-sr-f disp26)
)
)
(dni l-trap "trap (exception)"
((MACH ORBIS-MACHS) NOT-IN-DELAY-SLOT)
"l.trap ${uimm16}"
(+ OPC_SYSTRAPSYNCS OPC_SYSTRAPSYNCS_TRAP (f-resv-20-5 0) uimm16)
; Do exception entry handling in C function, PC set based on SR state
(raise-exception EXCEPT-TRAP)
()
)
(dni l-sys "syscall (exception)"
; This function may not be in delay slot
((MACH ORBIS-MACHS) NOT-IN-DELAY-SLOT)
"l.sys ${uimm16}"
(+ OPC_SYSTRAPSYNCS OPC_SYSTRAPSYNCS_SYSCALL (f-resv-20-5 0) uimm16)
; Do exception entry handling in C function, PC set based on SR state
(raise-exception EXCEPT-SYSCALL)
()
)
(dni l-msync "memory sync"
((MACH ORBIS-MACHS))
"l.msync"
(+ OPC_SYSTRAPSYNCS OPC_SYSTRAPSYNCS_MSYNC (f-resv-20-21 0))
(nop)
()
)
(dni l-psync "pipeline sync"
((MACH ORBIS-MACHS))
"l.psync"
(+ OPC_SYSTRAPSYNCS OPC_SYSTRAPSYNCS_PSYNC (f-resv-20-21 0))
(nop)
()
)
(dni l-csync "context sync"
((MACH ORBIS-MACHS))
"l.csync"
(+ OPC_SYSTRAPSYNCS OPC_SYSTRAPSYNCS_CSYNC (f-resv-20-21 0))
(nop)
()
)
(dni l-rfe "return from exception"
; This function may not be in delay slot
((MACH ORBIS-MACHS) NOT-IN-DELAY-SLOT FORCED-CTI)
"l.rfe"
(+ OPC_RFE (f-resv-25-26 0))
(c-call VOID "@cpu@_rfe")
()
)
; Misc instructions
; l.nop with immediate must be first so it handles all l.nops in sim
(dni l-nop-imm "nop uimm16"
((MACH ORBIS-MACHS))
"l.nop ${uimm16}"
(+ OPC_NOP (f-op-25-2 #x1) (f-resv-23-8 0) uimm16)
(c-call VOID "@cpu@_nop" (zext UWI uimm16))
()
)
(if (application-is? SIMULATOR)
(begin)
(begin
(dni l-nop "nop"
((MACH ORBIS-MACHS))
"l.nop"
(+ OPC_NOP (f-op-25-2 #x1) (f-resv-23-8 0) uimm16)
(nop)
()
)
)
)
(dni l-movhi "movhi reg/uimm16"
((MACH ORBIS-MACHS))
"l.movhi $rD,$uimm16"
(+ OPC_MOVHIMACRC rD (f-resv-20-4 0) OPC_MOVHIMACRC_MOVHI uimm16)
(set UWI rD (sll UWI (zext UWI uimm16) (const 16)))
()
)
(dni l-macrc "macrc reg"
((MACH ORBIS-MACHS))
"l.macrc $rD"
(+ OPC_MOVHIMACRC rD (f-resv-20-4 0) OPC_MOVHIMACRC_MACRC (f-uimm16 0))
(sequence ()
(set UWI rD mac-maclo)
(set UWI mac-maclo 0)
(set UWI mac-machi 0)
)
()
)
; System releated instructions
(dni l-mfspr "mfspr"
((MACH ORBIS-MACHS))
"l.mfspr $rD,$rA,${uimm16}"
(+ OPC_MFSPR rD rA uimm16)
(set UWI rD (c-call UWI "@cpu@_mfspr" (or rA (zext UWI uimm16))))
()
)
(dni l-mtspr "mtspr"
((MACH ORBIS-MACHS))
"l.mtspr $rA,$rB,${uimm16-split}"
(+ OPC_MTSPR rA rB uimm16-split )
(c-call VOID "@cpu@_mtspr" (or rA (zext WI uimm16-split)) rB)
()
)
; Load instructions
(define-pmacro (load-store-addr base offset size)
(c-call AI "@cpu@_make_load_store_addr" base (ext SI offset) size))
(dni l-lwz "l.lwz reg/simm16(reg)"
((MACH ORBIS-MACHS))
"l.lwz $rD,${simm16}($rA)"
(+ OPC_LWZ rD rA simm16)
(set UWI rD (zext UWI (mem USI (load-store-addr rA simm16 4))))
()
)
(dni l-lws "l.lws reg/simm16(reg)"
((MACH ORBIS-MACHS))
"l.lws $rD,${simm16}($rA)"
(+ OPC_LWS rD rA simm16)
(set WI rD (ext WI (mem SI (load-store-addr rA simm16 4))))
()
)
(dni l-lwa "l.lwa reg/simm16(reg)"
((MACH ORBIS-MACHS))
"l.lwa $rD,${simm16}($rA)"
(+ OPC_LWA rD rA simm16)
(sequence ()
(set UWI rD (zext UWI (mem USI (load-store-addr rA simm16 4))))
(set atomic-reserve (const 1))
(set atomic-address (load-store-addr rA simm16 4))
)
()
)
(dni l-lbz "l.lbz reg/simm16(reg)"
((MACH ORBIS-MACHS))
"l.lbz $rD,${simm16}($rA)"
(+ OPC_LBZ rD rA simm16)
(set UWI rD (zext UWI (mem UQI (load-store-addr rA simm16 1))))
()
)
(dni l-lbs "l.lbs reg/simm16(reg)"
((MACH ORBIS-MACHS))
"l.lbs $rD,${simm16}($rA)"
(+ OPC_LBS rD rA simm16)
(set WI rD (ext WI (mem QI (load-store-addr rA simm16 1))))
()
)
(dni l-lhz "l.lhz reg/simm16(reg)"
((MACH ORBIS-MACHS))
"l.lhz $rD,${simm16}($rA)"
(+ OPC_LHZ rD simm16 rA)
(set UWI rD (zext UWI (mem UHI (load-store-addr rA simm16 2))))
()
)
(dni l-lhs "l.lhs reg/simm16(reg)"
((MACH ORBIS-MACHS))
"l.lhs $rD,${simm16}($rA)"
(+ OPC_LHS rD rA simm16)
(set WI rD (ext WI (mem HI (load-store-addr rA simm16 2))))
()
)
; Store instructions
(define-pmacro (store-insn mnemonic opc-op mode size)
(begin
(dni (.sym l- mnemonic)
(.str "l." mnemonic " simm16(reg)/reg")
((MACH ORBIS-MACHS))
(.str "l." mnemonic " ${simm16-split}($rA),$rB")
(+ opc-op rA rB simm16-split)
(sequence ((SI addr))
(set addr (load-store-addr rA simm16-split size))
(set mode (mem mode addr) (trunc mode rB))
(if (eq (and addr #xffffffc) atomic-address)
(set atomic-reserve (const 0))
)
)
()
)
)
)
(store-insn sw OPC_SW USI 4)
(store-insn sb OPC_SB UQI 1)
(store-insn sh OPC_SH UHI 2)
(dni l-swa "l.swa simm16(reg)/reg"
((MACH ORBIS-MACHS))
"l.swa ${simm16-split}($rA),$rB"
(+ OPC_SWA rA rB simm16)
(sequence ((SI addr) (BI flag))
(set addr (load-store-addr rA simm16-split 4))
(set sys-sr-f (and atomic-reserve (eq addr atomic-address)))
(if sys-sr-f
(set USI (mem USI addr) (trunc USI rB))
)
(set atomic-reserve (const 0))
)
()
)
; Shift and rotate instructions
(define-pmacro (shift-insn mnemonic)
(begin
(dni (.sym l- mnemonic)
(.str "l." mnemonic " reg/reg/reg")
((MACH ORBIS-MACHS))
(.str "l." mnemonic " $rD,$rA,$rB")
(+ OPC_ALU rD rA rB (f-resv-10-3 0) (.sym OPC_SHROTS_ (.upcase mnemonic)) (f-resv-5-2 0)
OPC_ALU_REGREG_SHROT )
(set UWI rD (mnemonic rA rB))
()
)
(dni (.sym l- mnemonic "i")
(.str "l." mnemonic " reg/reg/uimm6")
((MACH ORBIS-MACHS))
(.str "l." mnemonic "i $rD,$rA,${uimm6}")
(+ OPC_SHROTI rD rA (f-resv-15-8 0) (.sym OPC_SHROTS_ (.upcase mnemonic)) uimm6)
(set rD (mnemonic rA uimm6))
()
)
)
)
(shift-insn sll)
(shift-insn srl)
(shift-insn sra)
(shift-insn ror)
; Arithmetic insns
; ALU op macro
(define-pmacro (alu-insn mnemonic)
(begin
(dni (.sym l- mnemonic)
(.str "l." mnemonic " reg/reg/reg")
((MACH ORBIS-MACHS))
(.str "l." mnemonic " $rD,$rA,$rB")
(+ OPC_ALU rD rA rB (f-resv-10-7 0) (.sym OPC_ALU_REGREG_ (.upcase mnemonic)))
(set rD (mnemonic rA rB))
()
)
)
)
(alu-insn and)
(alu-insn or)
(alu-insn xor)
(define-pmacro (alu-carry-insn mnemonic)
(begin
(dni (.sym l- mnemonic)
(.str "l." mnemonic " reg/reg/reg")
((MACH ORBIS-MACHS))
(.str "l." mnemonic " $rD,$rA,$rB")
(+ OPC_ALU rD rA rB (f-resv-10-7 #x00) (.sym OPC_ALU_REGREG_ (.upcase mnemonic)))
(sequence ()
(sequence ()
(set BI sys-sr-cy ((.sym mnemonic "c-cflag") WI rA rB 0))
(set BI sys-sr-ov ((.sym mnemonic "c-oflag") WI rA rB 0))
(set rD (mnemonic WI rA rB))
)
(if (andif sys-sr-ov sys-sr-ove)
(raise-exception EXCEPT-RANGE))
)
()
)
)
)
(alu-carry-insn add)
(alu-carry-insn sub)
(dni (l-addc) "l.addc reg/reg/reg"
((MACH ORBIS-MACHS))
("l.addc $rD,$rA,$rB")
(+ OPC_ALU rD rA rB (f-resv-10-7 #x00) OPC_ALU_REGREG_ADDC)
(sequence ()
(sequence ((BI tmp-sys-sr-cy))
(set BI tmp-sys-sr-cy sys-sr-cy)
(set BI sys-sr-cy (addc-cflag WI rA rB tmp-sys-sr-cy))
(set BI sys-sr-ov (addc-oflag WI rA rB tmp-sys-sr-cy))
(set rD (addc WI rA rB tmp-sys-sr-cy))
)
(if (andif sys-sr-ov sys-sr-ove)
(raise-exception EXCEPT-RANGE))
)
()
)
(dni (l-mul) "l.mul reg/reg/reg"
((MACH ORBIS-MACHS))
("l.mul $rD,$rA,$rB")
(+ OPC_ALU rD rA rB (f-resv-10-7 #x30) OPC_ALU_REGREG_MUL)
(sequence ()
(sequence ()
; 2's complement overflow
(set BI sys-sr-ov (mul-o2flag WI rA rB))
; 1's complement overflow
(set BI sys-sr-cy (mul-o1flag WI rA rB))
(set rD (mul WI rA rB))
)
(if (andif sys-sr-ov sys-sr-ove)
(raise-exception EXCEPT-RANGE))
)
()
)
(dni (l-mulu) "l.mulu reg/reg/reg"
((MACH ORBIS-MACHS))
("l.mulu $rD,$rA,$rB")
(+ OPC_ALU rD rA rB (f-resv-10-7 #x30) OPC_ALU_REGREG_MULU)
(sequence ()
(sequence ()
; 2's complement overflow
(set BI sys-sr-ov 0)
; 1's complement overflow
(set BI sys-sr-cy (mul-o1flag UWI rA rB))
(set rD (mul UWI rA rB))
)
(if (andif sys-sr-ov sys-sr-ove)
(raise-exception EXCEPT-RANGE))
)
()
)
(dni l-div "divide (signed)"
((MACH ORBIS-MACHS))
"l.div $rD,$rA,$rB"
(+ OPC_ALU rD rA rB (f-resv-10-7 #x30) OPC_ALU_REGREG_DIV)
(sequence ()
(if (ne rB 0)
(sequence ()
(set BI sys-sr-cy 0)
(set WI rD (div WI rA rB))
)
(set BI sys-sr-cy 1)
)
(set BI sys-sr-ov 0)
(if (andif sys-sr-cy sys-sr-ove)
(raise-exception EXCEPT-RANGE))
)
()
)
(dni l-divu "divide (unsigned)"
((MACH ORBIS-MACHS))
"l.divu $rD,$rA,$rB"
(+ OPC_ALU rD rA rB (f-resv-10-7 #x30) OPC_ALU_REGREG_DIVU)
(sequence ()
(if (ne rB 0)
(sequence ()
(set BI sys-sr-cy 0)
(set rD (udiv UWI rA rB))
)
(set BI sys-sr-cy 1)
)
(set BI sys-sr-ov 0)
(if (andif sys-sr-cy sys-sr-ove)
(raise-exception EXCEPT-RANGE))
)
()
)
(dni l-ff1 "find first '1'"
((MACH ORBIS-MACHS))
"l.ff1 $rD,$rA"
(+ OPC_ALU rD rA rB (f-resv-10-7 #x00) OPC_ALU_REGREG_FFL1)
(set rD (c-call UWI "@cpu@_ff1" rA))
()
)
(dni l-fl1 "find last '1'"
((MACH ORBIS-MACHS))
"l.fl1 $rD,$rA"
(+ OPC_ALU rD rA rB (f-resv-10-7 #x10) OPC_ALU_REGREG_FFL1)
(set rD (c-call UWI "@cpu@_fl1" rA))
()
)
(define-pmacro (alu-insn-simm mnemonic)
(begin
(dni (.sym l- mnemonic "i")
(.str "l." mnemonic " reg/reg/simm16")
((MACH ORBIS-MACHS))
(.str "l." mnemonic "i $rD,$rA,$simm16")
(+ (.sym OPC_ (.upcase mnemonic) "I") rD rA simm16)
(set rD (mnemonic rA (ext WI simm16)))
()
)
)
)
(define-pmacro (alu-insn-uimm mnemonic)
(begin
(dni (.sym l- mnemonic "i")
(.str "l." mnemonic " reg/reg/uimm16")
((MACH ORBIS-MACHS))
(.str "l." mnemonic "i $rD,$rA,$uimm16")
(+ (.sym OPC_ (.upcase mnemonic) "I") rD rA uimm16)
(set rD (mnemonic rA (zext UWI uimm16)))
()
)
)
)
(alu-insn-uimm and)
(alu-insn-uimm or)
(alu-insn-simm xor)
(define-pmacro (alu-carry-insn-simm mnemonic)
(begin
(dni (.sym l- mnemonic "i")
(.str "l." mnemonic "i reg/reg/simm16")
((MACH ORBIS-MACHS))
(.str "l." mnemonic "i $rD,$rA,$simm16")
(+ (.sym OPC_ (.upcase mnemonic) "I") rD rA simm16)
(sequence ()
(sequence ()
(set BI sys-sr-cy ((.sym mnemonic "c-cflag") WI rA (ext WI simm16) 0))
(set BI sys-sr-ov ((.sym mnemonic "c-oflag") WI rA (ext WI simm16) 0))
(set rD (mnemonic WI rA (ext WI simm16)))
)
(if (andif sys-sr-ov sys-sr-ove)
(raise-exception EXCEPT-RANGE))
)
()
)
)
)
(alu-carry-insn-simm add)
(dni (l-addic)
("l.addic reg/reg/simm16")
((MACH ORBIS-MACHS))
("l.addic $rD,$rA,$simm16")
(+ OPC_ADDIC rD rA simm16)
(sequence ()
(sequence ((BI tmp-sys-sr-cy))
(set BI tmp-sys-sr-cy sys-sr-cy)
(set BI sys-sr-cy (addc-cflag WI rA (ext WI simm16) tmp-sys-sr-cy))
(set BI sys-sr-ov (addc-oflag WI rA (ext WI simm16) tmp-sys-sr-cy))
(set WI rD (addc WI rA (ext WI simm16) tmp-sys-sr-cy))
)
(if (andif sys-sr-ov sys-sr-ove)
(raise-exception EXCEPT-RANGE))
)
()
)
(dni (l-muli)
"l.muli reg/reg/simm16"
((MACH ORBIS-MACHS))
("l.muli $rD,$rA,$simm16")
(+ OPC_MULI rD rA simm16)
(sequence ()
(sequence ()
; 2's complement overflow
(set sys-sr-ov (mul-o2flag WI rA (ext WI simm16)))
; 1's complement overflow
(set sys-sr-cy (mul-o1flag UWI rA (ext UWI simm16)))
(set rD (mul WI rA (ext WI simm16)))
)
(if (andif sys-sr-ov sys-sr-ove)
(raise-exception EXCEPT-RANGE))
)
()
)
(define-pmacro (extbh-insn mnemonic extop extmode truncmode)
(begin
(dni (.sym l- mnemonic)
(.str "l." mnemonic " reg/reg")
((MACH ORBIS-MACHS))
(.str "l." mnemonic " $rD,$rA")
(+ OPC_ALU rD rA (f-resv-15-6 0) (.sym OPC_EXTBHS_ (.upcase mnemonic)) (f-resv-5-2 0) OPC_ALU_REGREG_EXTBH)
(set rD (extop extmode (trunc truncmode rA)))
()
)
)
)
(extbh-insn exths ext WI HI)
(extbh-insn extbs ext WI QI)
(extbh-insn exthz zext UWI UHI)
(extbh-insn extbz zext UWI UQI)
(define-pmacro (extw-insn mnemonic extop extmode truncmode)
(begin
(dni (.sym l- mnemonic)
(.str "l." mnemonic " reg/reg")
((MACH ORBIS-MACHS))
(.str "l." mnemonic " $rD,$rA")
(+ OPC_ALU rD rA (f-resv-15-6 0) (.sym OPC_EXTWS_ (.upcase mnemonic)) (f-resv-5-2 0) OPC_ALU_REGREG_EXTW)
(set rD (extop extmode (trunc truncmode rA)))
()
)
)
)
(extw-insn extws ext WI SI)
(extw-insn extwz zext USI USI)
(dni l-cmov