/usr/share/picolisp/src64/arch/arm64.l is in picolisp 15.11-1.
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# (c) Software Lab. Alexander Burger
# *Globals
# Architecture
(on *LittleEndian)
(on *AlignedCode)
# Register assignments
(de *Registers
(A . "x0") (C . "x19") (E . "x20")
(B . B) (D . D)
(X . "x21") (Y . "x22") (Z . "x23")
(Nil . "x24") (TSym . "x25") (StkLimit . "x26")
(L . "x29") (S . "x28")
(zscx . zscx) (zsc . zsc) (x . x) )
# A x0
# ABI arguments x1 - x7, x31 (sp)
# Indirect result x8
# X-bit x9
# Immediate x10
# Source temp x11, x12
# Destination temp x13, x14
# Temporary x15, x16, x17, x18
# C, E, X, Y, Z x19, x20, x21, x22, x23
# Nil x24
# T x25
# StkLimit x26
# Unused x27
# S x28
# L x29
# Return link x30
# NULL xzr (x31)
(redef label (Lbl Flg)
(and Flg (not *FPic) (push '*Globals Lbl))
(label Lbl Flg) )
# Debug output
(de comment (Sym . @)
(when *Dbg
(prin " /* " Sym " ")
(while (args)
(let Arg (next)
(printsp
(recur (Arg)
(if (pair Arg)
(cons (recurse (car @)) (recurse (cdr @)))
(cond
((rassoc Arg *Registers) (car @))
((or (num? Arg) (format Arg)) @)
(T (intern Arg)) ) ) ) ) ) )
(prinl "*/") ) )
# Addressing modes
(de imm? (Src)
(pre? "#" Src) )
(de imm12 (N)
(and
(ge0 N)
(or
(>= 4095 N)
(and (>= 16777215 N) (=0 (& N 4095))) ) ) )
(de imm16 (N)
(>= 65535 N) )
(de imm64 (N)
(not (member "1" (member "0" (chop (bin N))))) )
(de reg? (S)
(or
(== S 'xzr)
(and
(= "x" (car (setq S (chop S))))
(format (cdr S))
(>= 30 @) ) ) )
(de reg (Reg Tmp) #> Register
(if (reg? Reg) Reg Tmp) )
(de immReg (Reg Num)
(if (imm64 Num)
(prinst "mov" Reg Num)
(let (I 0 N (or (ge0 Num) (- -1 Num)))
(while (=0 (& 65535 N))
(setq
N (>> 16 N)
I (+ I 16) ) )
(prinst
(if (ge0 Num) "movz" "movn")
Reg
(& 65535 N)
(pack "lsl " I) )
(until (=0 (setq N (>> 16 N)))
(inc 'I 16)
(unless (=0 (& 65535 N))
(prinst
"movk"
Reg
(if (ge0 Num)
(& 65535 N)
(- `(hex "FFFF") (& 65535 N)) )
(pack "lsl " I) ) ) ) ) )
Reg )
(de ldr (Dst Tmp) #> Register
(cond
((== 'B Dst) "x0")
((reg? Dst) Dst)
(T (prog1 Tmp (prinst "ldr" @ Dst))) ) )
(de mov (Dst Val C)
(unless (= Val Dst)
(cond
((== 'B Dst)
(cond
((imm? Val)
(prinst "mov" "x10" Val)
(prinst "bfm" "x0" "x10" 0 7) )
((= "x0" Val))
((reg? Val)
(prinst "bfm" "x0" Val 0 7) )
(T
(prinst "ldrb" "w15" Val)
(prinst "bfm" "x0" "x15" 0 7) ) ) )
((reg? Dst)
(if (and (= "b" C) (reg? Val))
(prinst "ubfm" Dst Val 0 7)
(when C
(setq Dst (pack (cons "w" (cdr (chop Dst)))))
(and (= "w" C) (off C)) )
(prinst
(pack
(if (or (imm? Val) (reg? Val)) "mov" "ldr")
C )
Dst
Val ) ) )
((imm? Val)
(prinst "mov" "x10" Val)
(mov Dst "x10" C) )
((== 'B Val)
(prinst "strb" "w0" Dst) )
((reg? Val)
(cond
((== 'B Val) (setq Val "w0" C "b"))
(C
(setq Val (pack (cons "w" (cdr (chop Val)))))
(and (= "w" C) (off C)) ) )
(prinst (pack "str" C) Val Dst) )
(T
(prinst "ldr" "x10" Val)
(prinst "str" "x10" Dst) ) ) ) )
(de adrp (Sym Reg)
(if (memq Sym *Globals)
(prog
(prinst "adrp" Reg (pack ":got:" Sym))
(prinst "ldr" Reg (pack "[" Reg ", #:got_lo12:" Sym "]")) )
(prinst "adrp" Reg Sym)
(prinst "add" Reg Reg (pack ":lo12:" Sym)) ) )
(de src (Src S Imm? Reg C) #> Immediate or register
(cond
((=0 S) # Immediate
(cond
((pre? "~" Src)
(prinst "mov" "x10" (pack "#-1-" (cdr (chop Src))))
"x10" )
((=0 (setq Src (format Src))) 'xzr)
((Imm? Src) (pack "#" Src))
(T (immReg (reg Reg "x10") Src)) ) )
((not S) Src) # Register
((and (=T S) (sub? "-" Src)) # Label difference
(pack "#" Src) )
(T
(setq Reg (reg Reg "x11"))
(cond
((=T S) (adrp Src Reg)) # Direct
((not (car S)) # Indexed
(nond
((=T (cdr S))
(mov Reg
(cond
((not (cdr Src)) (pack "[" (car Src) "]"))
((>= 256 (cdr Src) -256)
(pack "[" (car Src) "," (cdr Src) "]") )
(T
(prinst "mov" "x12" (cdr Src))
(pack "[" (car Src) ",x12]") ) )
C ) )
((sub? "-" Src) # Label difference
(prinst "adrp" Reg (cdr Src))
(prinst "add" Reg Reg (pack ":lo12:" (cdr Src)))
(mov Reg
(pack "[" (car Src) "," Reg "]")
C ) )
(NIL (mov Reg (pack "[" (car Src) ",#" (cdr Src) "]"))) ) )
((=T (car S)) # Indirect
(adrp (car Src) Reg)
(mov Reg
(pack "[" Reg (and (cdr Src) ",") (cdr Src) "]")
C ) )
(T # Combined
(src (car Src) (car S))
(nond
((=T (cdr S))
(mov Reg
(pack "[x11" (and (cdr Src) ",") (cdr Src) "]")
C ) )
((sub? "-" Src) # Label difference
(prinst "adrp" "x12" (cdr Src))
(prinst "add" "x12" "x12" (pack ":lo12:" (cdr Src)))
(mov Reg "[x12,x11]" C) )
(NIL (mov Reg (pack "[x11," (cdr Src) "]"))) ) ) )
Reg ) ) )
(de lea (Src S Reg)
(cond
((=0 S) # Immediate
(quit "Bad immediate operand") )
((not S) # Register
(prinst "mov" Reg Src) )
((=T S) # Direct
(adrp Src Reg) )
((not (car S)) # Indexed
(nond
((cdr S) (prinst "mov" Reg (car Src)))
((=T @)
(prinst "add" Reg (car Src)
(if (imm12 (cdr Src))
(cdr Src)
(immReg "x11" (cdr Src)) ) ) )
((sub? "-" (cdr Src)) # Label difference
(prinst "adrp" "x11" (cdr Src))
(prinst "add" Reg "x11" (pack ":lo12:" (cdr Src))) )
(NIL (prinst "add" Reg (car Src) (cdr Src))) ) )
((=T (car S)) # Indirect
(adrp (car Src) Reg)
(and (cdr S) (prinst "add" Reg Reg (cdr Src))) )
(T # Combined
(src (car Src) (car S) NIL Reg)
(when (cdr S)
(ifn (=T @)
(prinst "add" Reg Reg (cdr Src))
(prinst "adrp" "x12" (cdr Src))
(prinst "add" Reg "x12" (pack ":lo12:" (cdr Src))) ) ) ) ) )
(de dst (Dst D Reg1 Reg2) #> Register or memory
(default Reg1 "x13" Reg2 "x14")
(cond
((=0 D) # Immediate
(quit "Bad immediate operand") )
((not D) Dst) # Register
((=T D) # Direct
(quit "Bad direct operand") )
((not (car D)) # Indexed
(nond
((=T (cdr D))
(cond
((not (cdr Dst)) (pack "[" (car Dst) "]"))
((>= 256 (cdr Dst) -256)
(pack "[" (car Dst) "," (cdr Dst) "]") )
(T
(prinst "mov" Reg1 (cdr Dst))
(pack "[" (car Dst) "," Reg1 "]") ) ) )
((sub? "-" Dst) # Label difference
(prinst "adrp" Reg1 (cdr Dst))
(prinst "add" Reg1 Reg1 (pack ":lo12:" (cdr Dst)))
(pack "[" (car Dst) "," Reg1 "]") )
(NIL (pack "[" (car Dst) ",#" (cdr Dst) "]")) ) )
((=T (car D)) # Indirect
(adrp (car Dst) Reg1)
(pack "[" Reg1 (and (cdr Dst) ",") (cdr Dst) "]") )
(T # Combined
(src (car Dst) (car D) NIL Reg1)
(ifn (=T (cdr D))
(pack "[" Reg1 (and (cdr Dst) ",") (cdr Dst) "]")
(prinst "adrp" Reg2 (cdr Dst))
(prinst "add" Reg2 Reg1 (pack ":lo12:" (cdr Dst)))
(pack "[" Reg2 "," Reg1 "]") ) ) ) )
### Instruction set ###
(de alignSection (Align)
(if (== 'text *Section)
(prinst ".balign" 8)
(prinst ".balign" 16)
(or (=0 Align) (prinst ".space" Align)) ) )
(asm nop ()
(comment 'nop)
(prinst "nop") )
(asm align (N)
(prinst ".balign" N) )
(asm skip (N)
(if (== 'data *Section)
(or (=0 N) (prinst ".space" N))
(do (/ N 2) (prinst "nop")) ) )
# Move data
(asm ld (Dst D Src S)
(comment 'ld Dst Src)
(cond
((== 'D Dst)
(lea Src S "x15")
(prinst "ldp" "x0" "x19" "[x15]") )
((== 'D Src)
(lea Dst D "x15")
(prinst "stp" "x0" "x19" "[x15]") )
(T
(mov
(setq Dst (dst Dst D))
(src Src S imm16 Dst (and (== 'B Dst) "b")) ) ) ) )
(asm ld2 (Src S)
(comment 'ld2 Src)
(mov "x0" (dst Src S) "h") )
(asm ld4 (Src S)
(comment 'ld4 Src)
(mov "x0" (dst Src S) "w") )
(asm ldz (Dst D Src S)
(comment 'ldz Dst Src)
(if (and (reg? Dst) (reg? Src))
(prinst "csel" Dst Src Dst "eq")
(prinst "b.ne" "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src S imm16 Dst))
(prinl "1:") ) )
(asm ldnz (Dst D Src S)
(comment 'ldnz Dst Src)
(if (and (reg? Dst) (reg? Src))
(prinst "csel" Dst Src Dst "ne")
(prinst "b.eq" "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src S imm16 Dst))
(prinl "1:") ) )
(asm lea (Dst D Src S)
(comment 'lea Dst Src)
(setq Dst (dst Dst D) D (reg Dst "x15"))
(lea Src S D)
(mov Dst D) )
(asm st2 (Dst D)
(comment 'st2 Dst)
(mov (dst Dst D) "x0" "h") )
(asm st4 (Dst D)
(comment 'st4 Dst)
(mov (dst Dst D) "x0" "w") )
(asm xchg (Dst D Dst2 D2)
(comment 'xchg Dst Dst2)
(setq Dst (dst Dst D) Dst2 (dst Dst2 D2 "x17" "x18"))
(mov "x15" (ldr Dst "x15"))
(if (== 'B Dst)
(prog
(mov "x0" Dst2 "b")
(mov Dst2 "x15" "b") )
(mov Dst Dst2)
(mov Dst2 "x15") ) )
(asm movn (Dst D Src S Cnt C)
(comment 'movn Dst Src Cnt)
(lea Dst D "x1")
(lea Src S "x2")
(mov "x10" (src Cnt C imm16 "x10"))
(prinl "1:")
(prinst "ldrb" "w3" "[x2],1") # Byte from 'src'
(prinst "strb" "w3" "[x1],1") # store in 'dst'
(prinst "subs" "x10" "x10" "#1") # Decrement 'cnt'
(prinst "b.ne" "1b") )
(asm mset (Dst D Cnt C)
(comment 'mset Dst Cnt)
(lea Dst D "x1")
(mov "x10" (src Cnt C imm16 "x10"))
(prinl "1:")
(prinst "strb" "w0" "[x1],1") # Store B in 'dst'
(prinst "subs" "x10" "x10" "#1") # Decrement 'cnt'
(prinst "b.ne" "1b") )
(asm save (Src S End E Dst D)
(comment 'save Src End Dst)
(lea Dst D "x1")
(lea Src S "x2")
(lea End E "x3")
(prinl "1:")
(prinst "ldr" "x4" "[x2],8") # Word from 'src'
(prinst "str" "x4" "[x1],8") # store in 'dst'
(prinst "cmp" "x2" "x3") # Done?
(prinst "b.ne" "1b") )
(asm load (Dst D End E Src S)
(comment 'load Dst End Src)
(lea Dst D "x1")
(lea Src S "x2")
(lea End E "x3")
(prinl "1:")
(prinst "ldr" "x4" "[x2],8") # Word from 'src'
(prinst "str" "x4" "[x1],8") # store in 'dst'
(prinst "cmp" "x1" "x3") # Done?
(prinst "b.ne" "1b") )
# Arithmetics
# add
(de addAsm (CC Dst D Src S)
(comment 'add Dst Src)
(cond
((== 'D Dst)
(cond
((=0 S) # Immediate
(prinst "adds" "x0" "x0" (pack "#" Src))
(prinst (if CC "adcs" "adc") "x19" "x19" 'xzr) )
((not S) # Register
(prinst "adds" "x0" "x0" Src)
(prinst (if CC "adcs" "adc") "x19" "x19" 'xzr) )
(T
(lea Src S "x15")
(prinst "ldp" "x16" "x17" "[x15]")
(prinst "adds" "x0" "x0" "x16")
(prinst (if CC "adcs" "adc") "x19" "x19" "x17") ) ) )
(T
(setq Dst (dst Dst D))
(let D (ldr Dst "x15")
(prinst (if CC "adds" "add") D D (src Src S imm12))
(mov Dst D) ) ) ) )
(asm add (Dst D Src S)
(addAsm T Dst D Src S) )
(asmNoCC add (Dst D Src S)
(addAsm NIL Dst D Src S) )
# addc
(de addcAsm (CC Dst D Src S)
(comment 'addc Dst Src)
(cond
((== 'D Dst)
(cond
((=0 S) # Immediate
(prinst "adcs" "x0" "x0" (pack "#" Src))
(prinst (if CC "adcs" "adc") "x19" "x19" 'xzr) )
((not S) # Register
(prinst "adcs" "x0" "x0" Src)
(prinst (if CC "adcs" "adc") "x19" "x19" 'xzr) )
(T
(lea Src S "x15")
(prinst "ldp" "x16" "x17" "[x15]")
(prinst "adcs" "x0" "x0" "x16")
(prinst (if CC "adcs" "adc") "x19" "x19" "x17") ) ) )
(T
(setq Dst (dst Dst D))
(let D (ldr Dst "x15")
(prinst (if CC "adcs" "adc") D D (src Src S imm12))
(mov Dst D) ) ) ) )
(asm addc (Dst D Src S)
(addcAsm T Dst D Src S) )
(asmNoCC addc (Dst D Src S)
(addcAsm NIL Dst D Src S) )
# sub
(de subAsm (CC Dst D Src S)
(comment 'sub Dst Src)
(setq Dst (dst Dst D))
(let D (ldr Dst "x15")
(prinst (if CC "subs" "sub") D D (src Src S imm12))
(mov Dst D) ) )
(asm sub (Dst D Src S)
(subAsm T Dst D Src S) )
(asmNoCC sub (Dst D Src S)
(subAsm NIL Dst D Src S) )
# subb
(de subbAsm (CC Dst D Src S)
(comment 'subb Dst Src)
(setq Dst (dst Dst D))
(let D (ldr Dst "x15")
(prinst "sbcs" D D (src Src S imm12))
(mov Dst D) ) )
(asm subb (Dst D Src S)
(subbAsm T Dst D Src S) )
(asmNoCC subb (Dst D Src S)
(subbAsm NIL Dst D Src S) )
# inc
(de incAsm (CC Dst D)
(comment 'inc Dst)
(setq Dst (dst Dst D))
(let D (ldr Dst "x15")
(prinst (if CC "adds" "add") D D "#1")
(mov Dst D) ) )
(asm inc (Dst D)
(incAsm T Dst D) )
(asmNoCC inc (Dst D)
(incAsm NIL Dst D) )
# dec
(de decAsm (CC Dst D)
(comment 'dec Dst)
(setq Dst (dst Dst D))
(let D (ldr Dst "x15")
(prinst (if CC "subs" "sub") D D "#1")
(mov Dst D) ) )
(asm dec (Dst D)
(decAsm T Dst D) )
(asmNoCC dec (Dst D)
(decAsm NIL Dst D) )
# not
(asm not (Dst D)
(comment 'not Dst)
(setq Dst (dst Dst D))
(if (== 'B Dst)
(prinst "eor" "x0" "x0" "#255")
(let D (ldr Dst "x15")
(prinst "eon" D D 'xzr)
(mov Dst D) ) ) )
# neg
(de negAsm (CC Dst D)
(comment 'neg Dst)
(setq Dst (dst Dst D))
(let D (ldr Dst "x15")
(prinst (if CC "negs" "neg") D D)
(mov Dst D) ) )
(asm neg (Dst D)
(negAsm T Dst D) )
(asmNoCC neg (Dst D)
(negAsm NIL Dst D) )
# and
(de andAsm (CC Dst D Src S)
(comment 'and Dst Src)
(setq Dst (dst Dst D))
(cond
((== 'B Dst)
(prinst (if CC "ands" "and") "x0" "x0" (src Src S imm64 NIL "b")) )
((== 'B Src)
(mov "x15" Dst "b")
(prinst (if CC "ands" "and") "x15" "x15" "x0")
(mov Dst "x15" "b") )
(T
(let D (ldr Dst "x15")
(prinst (if CC "ands" "and") D D (src Src S imm64))
(mov Dst D) ) ) ) )
(asm and (Dst D Src S)
(andAsm T Dst D Src S) )
(asmNoCC and (Dst D Src S)
(andAsm NIL Dst D Src S) )
# or
(de orAsm (CC Dst D Src S)
(comment 'or Dst Src)
(setq Dst (dst Dst D))
(cond
((== 'B Dst)
(prinst "orr" "x0" "x0" (src Src S imm64 NIL "b")) )
((== 'B Src)
(mov "x15" Dst "b")
(prinst "orr" "x15" "x15" "x0")
(mov Dst "x15" "b") )
(T
(setq Src (src Src S imm64))
(let D (ldr Dst "x15")
(prinst "orr" D D Src)
(and CC (prinst "ands" 'xzr D D))
(mov Dst D) ) ) ) )
(asm or (Dst D Src S)
(orAsm T Dst D Src S) )
(asmNoCC or (Dst D Src S)
(orAsm NIL Dst D Src S) )
# xor
(de xorAsm (CC Dst D Src S)
(comment 'xor Dst Src)
(setq Dst (dst Dst D) Src (src Src S imm64))
(let D (ldr Dst "x15")
(if (== 'B Dst)
(prinst "eor" "x0" "x0" Src)
(prinst "eor" D D Src)
(and CC (prinst "ands" 'xzr D D))
(mov Dst D) ) ) )
(asm xor (Dst D Src S)
(xorAsm T Dst D Src S) )
(asmNoCC xor (Dst D Src S)
(xorAsm NIL Dst D Src S) )
# off
(de offAsm (CC Dst D Src S)
(comment 'off Dst Src)
(setq Dst (dst Dst D) Src (src Src S imm64))
(let D (ldr Dst "x15")
(if (== 'B Dst)
(prinst (if CC "ands" "and") "x0" "x0" Src)
(prinst (if CC "ands" "and") D D Src)
(mov Dst D) ) ) )
(asm off (Dst D Src S)
(offAsm T Dst D Src S) )
(asmNoCC off (Dst D Src S)
(offAsm NIL Dst D Src S) )
# test
(asm test (Dst D Src S)
(comment 'test Dst Src)
(setq Dst (dst Dst D))
(cond
((== 'B Dst)
(mov "x15" "x0" "b")
(prinst "ands" 'xzr "x15" (src Src S imm64 NIL "b")) )
((== 'B Src)
(mov "x15" "x0" "b")
(mov "x16" Dst "b")
(prinst "ands" 'xzr "x16" "x15") )
(T
(prinst "ands" 'xzr (ldr Dst "x15") (src Src S imm64)) ) ) )
# shl
(de shlAsm (CC Dst D Src S)
(comment 'shl Dst Src)
(setq Dst (dst Dst D) Src (src Src S imm12))
(let D (ldr Dst "x15")
(cond
((imm? Src)
(when CC
(let N (pack "#64-" (cdr (chop Src)))
(prinst "sbfm" "x9" D N N) ) ) )
((== 'B Dst)
(mov "x15" "x0" "b")
(setq D "x15") )
((== 'B Src)
(mov "x16" "x0" "b")
(setq Src "x16") ) )
(prinst "lsl" D D Src)
(and CC (prinst "ands" 'xzr D D))
(mov Dst D) ) )
(asm shl (Dst D Src S)
(shlAsm T Dst D Src S) )
(asmNoCC shl (Dst D Src S)
(shlAsm NIL Dst D Src S) )
# shr
(de shrAsm (CC Dst D Src S)
(comment 'shr Dst Src)
(setq Dst (dst Dst D) Src (src Src S imm12))
(let D (ldr Dst "x15")
(cond
((imm? Src)
(when CC
(let N (pack Src "-1")
(prinst "sbfm" "x9" D N N) ) ) )
((== 'B Dst)
(mov "x15" "x0" "b")
(setq D "x15") )
((== 'B Src)
(mov "x16" "x0" "b")
(setq Src "x16") ) )
(prinst "lsr" D D Src)
(and CC (prinst "ands" 'xzr D D))
(mov Dst D) ) )
(asm shr (Dst D Src S)
(shrAsm T Dst D Src S) )
(asmNoCC shr (Dst D Src S)
(shrAsm NIL Dst D Src S) )
# rol
(asm rol (Dst D Src S)
(comment 'rol Dst Src)
(setq Dst (dst Dst D) Src (src Src S imm12))
(if (imm? Src)
(let D (ldr Dst "x15")
(prinst "ror" D D (pack "#64-" (cdr (chop Src))))
(mov Dst D) )
(quit "Non-immediate 'rol' not available") ) )
# ror
(asm ror (Dst D Src S)
(comment 'ror Dst Src)
(setq Dst (dst Dst D) Src (src Src S imm12))
(let D (ldr Dst "x15")
(prinst "ror" D D Src)
(mov Dst D) ) )
# rxl
(de rxlAsm (CC Dst D Src S)
(comment 'rxl Dst Src)
(setq Dst (dst Dst D) Src (src Src S imm12))
(if (imm? Src)
(let (N (pack "#64-" (cdr (chop Src))) D (ldr Dst "x15"))
(prinst "mov" "x16" D)
(prinst "bfm" "x9" D 1 63)
(prinst "extr" D D "x9" N)
(and CC (prinst "sbfm" "x9" "x16" N N))
(mov Dst D) )
(quit "Non-immediate 'rxl' not available") ) )
(asm rxl (Dst D Src S)
(rxlAsm T Dst D Src S) )
(asmNoCC rxl (Dst D Src S)
(rxlAsm NIL Dst D Src S) )
# rxr
(de rxrAsm (CC Dst D Src S)
(comment 'rxr Dst Src)
(setq Dst (dst Dst D) Src (src Src S imm12))
(if (imm? Src)
(let (N (pack Src "-1") D (ldr Dst "x15"))
(prinst "mov" "x16" D)
(prinst "bfm" "x9" D 1 63)
(prinst "extr" D D "x9" N)
(and CC (prinst "sbfm" "x9" "x16" N N))
(mov Dst D) )
(quit "Non-immediate 'rxr' not available") ) )
(asm rxr (Dst D Src S)
(rxrAsm T Dst D Src S) )
(asmNoCC rxr (Dst D Src S)
(rxrAsm NIL Dst D Src S) )
# mul
(asm mul (Src S)
(comment 'mul Src)
(when (imm? (setq Src (src Src S imm16)))
(mov "x15" Src)
(setq Src "x15") )
(prinst "umulh" "x19" "x0" Src)
(prinst "mul" "x0" "x0" Src) )
# div
(asm div (Src S)
(comment 'div Src)
(mov "x1" (src Src S imm16 "x1"))
(prinst "str" "x30" "[x28,-8]!")
(prinst "bl" "div")
(prinst "ldr" "x30" "[x28],8") )
# zxt
(asm zxt () # 8 bit -> 64 bit
(comment 'zxt)
(prinst "ubfm" "x0" "x0" 0 7) )
# eq
(asm eq ()
(comment 'eq)
(prinst "cmp" 'xzr 'xzr) )
# gt
(asm gt ()
(comment 'gt)
(prinst "cmp" "x28" 0) )
# lt
(asm lt ()
(comment 'lt)
(prinst "cmp" "x28" -1) )
# setx
(asm setx ()
(comment 'setx)
(prinst "mov" "x9" -1) )
# clrx
(asm clrx ()
(comment 'clrx)
(prinst "mov" "x9" 0) )
# Comparisons
(asm cmp (Dst D Src S)
(comment 'cmp Dst Src)
(setq Dst (dst Dst D))
(cond
((== 'B Dst)
(mov "x15" "x0" "b")
(ifn (reg? Src)
(prinst "cmp" "x15" (src Src S imm12 NIL "b"))
(mov "x16" Src "b")
(prinst "cmp" "x15" "x16") ) )
((== 'B Src)
(mov "x15" "x0" "b")
(mov "x16" Dst "b")
(prinst "cmp" "x16" "x15") )
(T
(when (and (= Dst "x28") (= Src '("x26"))) # cmp S (StkLimit)
(prinst "sub" "x8" "x28" "#4096")
(prinst "cmp" 'sp "x8")
(prinst "b.lo" "1f")
(prinst "and" "x8" "x8" "#~15")
(prinst "mov" 'sp "x8")
(prinl "1:") )
(prinst "cmp" (ldr Dst "x15") (src Src S imm12)) ) ) )
(asm cmpn (Dst D Src S Cnt C)
(comment 'cmpn Dst Src Cnt)
(lea Dst D "x1")
(lea Src S "x2")
(mov "x10" (src Cnt C imm16 "x10"))
(prinl "1:")
(prinst "ldrb" "w3" "[x1],1") # Bytes from 'dst'
(prinst "ldrb" "w4" "[x2],1") # and 'src'
(prinst "cmp" "w3" "w4") # Same?
(prinst "b.ne" "2f") # No: Return 'ne'
(prinst "subs" "x10" "x10" "#1") # Decrement 'cnt'
(prinst "b.ne" "1b")
(prinl "2:") )
(asm slen (Dst D Src S)
(comment 'slen Dst Src)
(setq Dst (dst Dst D))
(let D (reg Dst "x1")
(lea Src S "x2")
(prinst "mov" D "#-1")
(prinl "1:")
(prinst "add" D D "#1")
(prinst "ldrb" "w3" (pack "[x2],1")) # Byte from 'src'
(prinst "cbnz" "w3" "1b")
(mov Dst D) ) )
(asm memb (Src S Cnt C)
(comment 'memb Src Cnt)
(prinst "ubfm" "w1" "w0" 0 7)
(lea Src S "x2")
(mov "x10" (src Cnt C imm16 "x10"))
(prinl "1:")
(prinst "subs" "x10" "x10" "#1") # Decrement 'cnt'
(prinst "b.cc" "2f") # Return 'ne' if done
(prinst "ldrb" "w3" (pack "[x2],1")) # Byte from 'src'
(prinst "cmp" "w3" "w1") # Same?
(prinst "b.ne" "1b") # No
(unless S (prinst "mov" Src "x2"))
(unless C (prinst "mov" Cnt "x10"))
(prinl "2:") )
(asm null (Src S)
(comment 'null Src)
(prinst "cmp" (src Src S) 0) )
(asm null/jz (Src S Adr A) # optimize
(comment 'null Src "--" "jz" Adr)
(prinst "cbz" (src Src S) Adr) )
(asm null/ldz (Src S Dst D Src2 S2) # optimize
(comment 'null Src "--" "ldz" Dst Src2)
(prinst "cbnz" (src Src S) "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm null/jnz (Src S Adr A)
(comment 'null Src "--" "jnz" Adr)
(prinst "cbnz" (src Src S) Adr) )
(asm null/ldnz (Src S Dst D Src2 S2) # optimize
(comment 'null Src "--" "ldnz" Dst Src2)
(prinst "cbz" (src Src S) "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm nulp (Src S)
(comment 'nulp Src)
(prinst "cmp" (src Src S) 0) )
(asm nulp/jz (Src S Adr A) # optimize
(comment 'nulp Src "--" "jz" Adr)
(prinst "cbz" (src Src S) Adr) )
(asm nulp/ldz (Src S Dst D Src2 S2) # optimize
(comment 'nulp Src "--" "ldz" Dst Src2)
(prinst "cbnz" (src Src S) "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm nulp/jnz (Src S Adr A)
(comment 'nulp Src "--" "jnz" Adr)
(prinst "cbnz" (src Src S) Adr) )
(asm nulp/ldnz (Src S Dst D Src2 S2) # optimize
(comment 'nulp Src "--" "ldnz" Dst Src2)
(prinst "cbz" (src Src S) "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm nul4 ()
(comment 'nul4)
(prinst "cmp" "w0" 0) )
(asm nul4/jz (Adr A) # optimize
(comment 'nul4 "--" "jz" Adr)
(prinst "cbz" "w0" Adr) )
(asm nul4/ldz (Dst D Src2 S2) # optimize
(comment 'nul4 "--" "ldz" Dst Src2)
(prinst "cbnz" "w0" "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm nul4/jnz (Adr A)
(comment 'nul4 "--" "jnz" Adr)
(prinst "cbnz" "w0" Adr) )
(asm nul4/ldnz (Dst D Src2 S2) # optimize
(comment 'nul4 "--" "ldnz" Dst Src2)
(prinst "cbz" "w0" "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
# Byte addressing
(asm set (Dst D Src S)
(comment 'set Dst Src)
(setq Dst (dst Dst D) Src (src Src S imm12))
(mov Dst Src "b") )
(asm nul (Src S)
(comment 'nul Src)
(when (== 'B (setq Src (src Src S NIL NIL "b")))
(prinst "ubfm" (setq Src "x11") "x0" 0 7) )
(prinst "cmp" Src 0) )
(asm nul/jz (Src S Adr A) # optimize
(comment 'nul Src "--" "jz" Adr)
(when (== 'B (setq Src (src Src S NIL NIL "b")))
(prinst "ubfm" (setq Src "x11") "x0" 0 7) )
(prinst "cbz" Src Adr) )
(asm nul/jnz (Src S Adr A)
(comment 'nul Src "--" "jnz" Adr)
(when (== 'B (setq Src (src Src S NIL NIL "b")))
(prinst "ubfm" (setq Src "x11") "x0" 0 7) )
(prinst "cbnz" Src Adr) )
# Types
(asm cnt (Src S)
(comment 'cnt Src)
(prinst "ands" 'xzr (src Src S NIL NIL "b") "#0x02") )
(asm cnt/jz (Src S Adr A) # optimize
(comment 'cnt Src "--" "jz" Adr)
(prinst "tbz" (src Src S NIL NIL "b") "#1" Adr) )
(asm cnt/ldz (Src S Dst D Src2 S2) # optimize
(comment 'cnt Src "--" "ldz" Dst Src2)
(prinst "tbnz" (src Src S NIL NIL "b") "#1" "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm cnt/jnz (Src S Adr A)
(comment 'cnt Src "--" "jnz" Adr)
(prinst "tbnz" (src Src S NIL NIL "b") "#1" Adr) )
(asm cnt/ldnz (Src S Dst D Src2 S2) # optimize
(comment 'cnt Src "--" "ldnz" Dst Src2)
(prinst "tbz" (src Src S NIL NIL "b") "#1" "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm big (Src S)
(comment 'big Src)
(prinst "ands" 'xzr (src Src S NIL NIL "b") "#0x04") )
(asm big/jz (Src S Adr A) # optimize
(comment 'big Src "--" "jz" Adr)
(prinst "tbz" (src Src S NIL NIL "b") "#2" Adr) )
(asm big/ldz (Src S Dst D Src2 S2) # optimize
(comment 'big Src "--" "ldz" Dst Src2)
(prinst "tbnz" (src Src S NIL NIL "b") "#2" "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm big/jnz (Src S Adr A)
(comment 'big Src "--" "jnz" Adr)
(prinst "tbnz" (src Src S NIL NIL "b") "#2" Adr) )
(asm big/ldnz (Src S Dst D Src2 S2) # optimize
(comment 'big Src "--" "ldnz" Dst Src2)
(prinst "tbz" (src Src S NIL NIL "b") "#2" "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm num (Src S)
(comment 'num Src)
(prinst "ands" 'xzr (src Src S NIL NIL "b") "#0x06") )
(asm sym (Src S)
(comment 'sym Src)
(prinst "ands" 'xzr (src Src S NIL NIL "b") "#0x08") )
(asm sym/jz (Src S Adr A) # optimize
(comment 'sym Src "--" "jz" Adr)
(prinst "tbz" (src Src S NIL NIL "b") "#3" Adr) )
(asm sym/ldz (Src S Dst D Src2 S2) # optimize
(comment 'sym Src "--" "ldz" Dst Src2)
(prinst "tbnz" (src Src S NIL NIL "b") "#3" "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm sym/jnz (Src S Adr A)
(comment 'sym Src "--" "jnz" Adr)
(prinst "tbnz" (src Src S NIL NIL "b") "#3" Adr) )
(asm sym/ldnz (Src S Dst D Src2 S2) # optimize
(comment 'sym Src "--" "ldnz" Dst Src2)
(prinst "tbz" (src Src S NIL NIL "b") "#3" "1f")
(setq Dst (dst Dst D))
(mov Dst (src Src2 S2 imm16 Dst))
(prinl "1:") )
(asm atom (Src S)
(comment 'atom Src)
(prinst "ands" 'xzr (src Src S NIL NIL "b") "#0x0E") )
# Flow control
(asm call (Adr A)
(comment 'call Adr)
(prinst "str" "x30" "[x28,-8]!")
(nond
(A # Absolute
(prinst "bl" Adr) )
((=T A)
(if (=0 A)
(prinst "blr" Adr)
(prinst "sub" "x1" Adr "#2") # SUBR
(prinst "blr" "x1") ) )
(NIL # Indirect
(prinst "ldr" "x1" (pack "[" (src Adr A NIL NIL "x1") "]"))
(prinst "blr" "x1") ) )
(prinst "ldr" "x30" "[x28],8") )
(asm jmp (Adr A)
(comment 'jmp Adr)
(nond
(A # Absolute
(prinst "b" Adr) )
((=T A)
(if (=0 A)
(prinst "br" Adr)
(prinst "sub" "x1" Adr "#2") # SUBR
(prinst "br" "x1") ) )
(NIL # Indirect
(prinst "ldr" "x1" (pack "[" (src Adr A NIL NIL "x1") "]"))
(prinst "br" "x1") ) ) )
(asm jump (Reg)
(comment 'jump Reg)
(prinst "str" Reg "[x28,-8]!")
(prinst "ret") )
(de _jmp (Opc Opc2 Reg)
(ifn A
(if Reg
(prinst Opc Reg Adr)
(prinst Opc Adr) )
(if Reg
(prinst Opc2 Reg "1f")
(prinst Opc2 "1f") )
(ifn (=T A)
(if (=0 A)
(prinst "br" Adr)
(prinst "sub" "x1" Adr "#2") # SUBR
(prinst "br" "x1") )
(prinst "ldr" "x1" (pack "[" (src Adr A NIL NIL "x1") "]"))
(prinst "br" "x1") )
(prinl "1:") ) )
(asm jz (Adr A)
(comment 'jz Adr)
(_jmp "b.eq" "b.ne") )
(asm jeq (Adr A)
(comment 'jeq Adr)
(_jmp "b.eq" "b.ne") )
(asm jnz (Adr A)
(comment 'jnz Adr)
(_jmp "b.ne" "b.eq") )
(asm jne (Adr A)
(comment 'jne Adr)
(_jmp "b.ne" "b.eq") )
(asm js (Adr A)
(comment 'js Adr)
(_jmp "b.mi" "b.pl") )
(asm jns (Adr A)
(comment 'jns Adr)
(_jmp "b.pl" "b.mi") )
(asm jsz (Adr A)
(comment 'jsz Adr)
(_jmp "b.le" "b.gt") )
(asm jnsz (Adr A)
(comment 'jnsz Adr)
(_jmp "b.gt" "b.le") )
(asm jc (Adr A)
(comment 'jc Adr)
(_jmp "b.cs" "b.cc") )
(asm jb (Adr A)
(comment 'jb Adr)
(_jmp "b.cc" "b.cs") )
(asm jx (Adr A)
(comment 'jx Adr)
(_jmp "cbnz" "cbz" "x9") )
(asm jlt (Adr A)
(comment 'jlt Adr)
(_jmp "b.cc" "b.cs") )
(asm jnc (Adr A)
(comment 'jnc Adr)
(_jmp "b.cc" "b.cs") )
(asm jnb (Adr A)
(comment 'jnb Adr)
(_jmp "b.cs" "b.cc") )
(asm jnx (Adr A)
(comment 'jnx Adr)
(_jmp "cbz" "cbnz" "x9") )
(asm jge (Adr A)
(comment 'jge Adr)
(_jmp "b.cs" "b.cc") )
(asm jle (Adr A)
(comment 'jle Adr)
(_jmp "b.ls" "b.hi") )
(asm jgt (Adr A)
(comment 'jgt Adr)
(_jmp "b.hi" "b.ls") )
(asm ret ()
(comment 'ret)
(prinst "ret") )
(asm catch ()
(comment 'catch)
(prinst "str" "x30" "[x28,-8]!") )
(asm throw ()
(comment 'throw)
(prinst "ldr" "x30" "[x28],8")
(prinst "ret") )
# Floating point
(asm ldd ()
(comment 'ldd)
(prinst "ldr" "d0" "[x19]") )
(asm ldf ()
(comment 'ldf)
(prinst "ldr" "s0" "[x19]") )
(asm fixnum ()
(comment 'fixnum)
(prinst "tbnz" "x20" "#3" "1f") # Jump if scale negative
(prinst "lsr" "x20" "x20" "#4") # Normalize scale
(prinst "scvtf" "d16" "x20") # and and convert
(prinst "fmul" "d0" "d0" "d16") # Mulitply double with scale
(prinst "fcvtas" "x20" "d0") # Convert to integer
(prinst "b" "2f")
(prinl "1:")
(prinst "lsr" "x20" "x20" "#4") # Normalize scale
(prinst "scvtf" "s16" "x20") # and and convert
(prinst "fmul" "s0" "s0" "s16") # Mulitply float with scale
(prinst "fcvtas" "x20" "s0") # Convert to integer
(prinl "2:")
(prinst "lsl" "x10" "x20" "#4") # Make short
(prinst "cmp" "x10" 0) # Negative?
(prinst "b.pl" "3f") # No: Skip
(prinst "negs" "x10" "x10") # Negate
(prinst "b.mi" "4f") # Still negative: Overflow
(prinst "orr" "x10" "x10" "#8")
(prinl "3:")
(prinst "orr" "x20" "x10" "#2")
(prinst "b" "5f")
(prinl "4:") # Infinite/NaN
(prinst "fcmp" "d0" "#0.0") # Float value negative?
(prinst "csel" "x20" "x24" "x25" "mi") # Load NIL else T
(prinl "5:") )
(asm float ()
(comment 'float)
(prinst "lsr" "x16" "x0" "#4") # Normalize scale
(prinst "ldr" "x17" "[x21]") # Load fixnum
(prinst "tbnz" "x0" "#3" "3f") # Jump if negative scale
(prinst "tbz" "x17" "#1" "1f") # Jump if not short fixnum
(prinst "scvtf" "d16" "x16") # Convert scale
(prinst "ands" 'xzr "x17" "#0x08") # Fixnum negative?
(prinst "lsr" "x17" "x17" "#4") # Normalize
(prinst "cneg" "x17" "x17" "ne") # Yes: Negate
(prinst "scvtf" "d17" "x17") # and convert to double
(prinst "fdiv" "d0" "d17" "d16") # Divide by scale
(prinst "b" "6f") # Done
(prinl "1:")
(prinst "cmp" "x17" "x24") # Minus infinite?
(prinst "mov" "x17" "#0x7FF0000000000000")
(prinst "b.ne" "2f") # No: Jump
(prinst "mov" "x17" "#0xFFF0000000000000")
(prinl "2:")
(prinst "fmov" "d0" "x17")
(prinst "b" "6f") # Done
(prinl "3:")
(prinst "tbz" "x17" "#1" "4f") # Jump if not short fixnum
(prinst "scvtf" "s16" "x16") # Convert scale
(prinst "ands" 'xzr "x17" "#0x08") # Fixnum negative?
(prinst "lsr" "x17" "x17" "#4") # Normalize
(prinst "cneg" "x17" "x17" "ne") # Yes: Negate
(prinst "scvtf" "s17" "x17") # and convert to double
(prinst "fdiv" "s0" "s17" "s16") # Divide by scale
(prinst "b" "6f") # Done
(prinl "4:")
(prinst "cmp" "x17" "x24") # Minus infinite?
(prinst "mov" "x17" "#0x7F800000")
(prinst "b.ne" "5f") # No: Jump
(prinst "mov" "x17" "#0xFF800000")
(prinl "5:")
(prinst "fmov" "s0" "x17")
(prinl "6:") )
(asm std ()
(comment 'std)
(prinst "str" "d0" "[x23]") )
(asm stf ()
(comment 'stf)
(prinst "str" "s0" "[x23]") )
# C-Calls
(asm cc (Adr A Arg M)
(comment 'cc Adr Arg)
(if (lst? Arg)
(let (Reg '("x0" "x1" "x2" "x3" "x4" "x5" "x6" "x7") Lea NIL Tmp NIL)
(when (fish '((X) (= "x0" X)) (cdr Arg))
(prinst "mov" (setq Tmp "x9") "x0") ) # No need to preserve x-bit
(mapc
'((Src S)
(if (== '& Src)
(on Lea)
(setq Src
(recur (Src)
(cond
((= "x0" Src) (or Tmp "x0"))
((atom Src) Src)
(T (cons (recurse (car Src)) (recurse (cdr Src)))) ) ) )
(cond
((and (=T S) (== 'pop Src))
(prinst "ldr" (pop 'Reg) "[x28],8") )
((= "x0" Src) (pop 'Reg))
(Lea (lea Src S (pop 'Reg)))
(T (mov (car Reg) (src Src S imm16 (pop 'Reg)))) )
(off Lea) ) )
Arg
M )
(prinst "str" "x30" "[x28,-8]!") )
(prinst "sub" "x20" Arg "x28") # Size of arguments in E (x20)
(prinst "lsr" "x20" "x20" "#1") # Take half
(prinst "add" "x20" "x20" "#8") # Align
(prinst "and" "x20" "x20" "#~15")
(prinst "sub" 'sp 'sp "x20") # Allocate space
(prinst "mov" "x11" 'sp) # x11 on stack space
(prinst "mov" "x12" "x28") # x12 on arguments
(prinst "adrp" "x13" "ldInt") # x13 on integer loaders
(prinst "add" "x13" "x13" ":lo12:ldInt")
(prinst "adrp" "x14" "ldFlt") # x14 on float loaders
(prinst "add" "x14" "x14" ":lo12:ldFlt")
(prinst "adrp" "x15" "ldDbl") # x15 on double loaders
(prinst "add" "x15" "x15" ":lo12:ldDbl")
(prinst "str" "x30" "[x28,-8]!")
(prinl "1:")
(prinst "cmp" "x12" Arg) # Done?
(prinst "b.eq" "8f") # Yes
(prinst "ldr" "x16" "[x12],8") # Next arg
(prinst "cbnz" "x16" "2f") # Jump if float/double
(prinst "blr" "x13") # Load integer
(prinst "b" "1b")
(prinl "2:")
(prinst "ldr" "x17" "[x12],8") # Mantissa in x17
(prinst "tbz" "x16" "#3" "5f") # Jump if scale positive
(prinst "tbz" "x17" "#1" "3f") # Jump if no short mantissa
(prinst "lsr" "x16" "x16" "#4") # Normalize scale
(prinst "scvtf" "s16" "x16") # and and convert
(prinst "ands" 'xzr "x17" "#0x08") # Mantissa negative?
(prinst "lsr" "x17" "x17" "#4") # Normalize
(prinst "cneg" "x17" "x17" "ne") # Yes: Negate
(prinst "scvtf" "s17" "x17") # and convert to float
(prinst "fdiv" "s17" "s17" "s16") # Float mantissa / scale
(prinst "blr" "x14") # Load float
(prinst "b" "1b")
(prinl "3:")
(prinst "cmp" "x17" "x24") # Mantissa Nil?
(prinst "b.eq" "4f") # Yes: Jump
(prinst "mov" "w17" "#0x7F800000") # INF
(prinst "fmov" "s17" "w17")
(prinst "blr" "x14") # Load float
(prinst "b" "1b")
(prinl "4:")
(prinst "mov" "w17" "#0xFF800000") # -INF
(prinst "fmov" "s17" "w17")
(prinst "blr" "x14") # Load float
(prinst "b" "1b")
(prinl "5:")
(prinst "tbz" "x17" "#1" "6f") # Jump if no short mantissa
(prinst "lsr" "x16" "x16" "#4") # Normalize scale
(prinst "scvtf" "d16" "x16") # and and convert
(prinst "ands" 'xzr "x17" "#0x08") # Mantissa negative?
(prinst "lsr" "x17" "x17" "#4") # Normalize
(prinst "cneg" "x17" "x17" "ne") # Yes: Negate
(prinst "scvtf" "d17" "x17") # and convert to double
(prinst "fdiv" "d17" "d17" "d16") # Double mantissa / scale
(prinst "blr" "x15") # Load double
(prinst "b" "1b")
(prinl "6:")
(prinst "cmp" "x17" "x24") # Mantissa Nil?
(prinst "b.eq" "7f") # Yes: Jump
(prinst "mov" "x17" "#0x7FF0000000000000")
(prinst "fmov" "d17" "x17")
(prinst "blr" "x15") # Load double
(prinst "b" "1b")
(prinl "7:")
(prinst "mov" "x17" "#0xFFF0000000000000")
(prinst "fmov" "d17" "x17")
(prinst "blr" "x15") # Load double
(prinst "b" "1b")
(prinl "8:") )
(nond
(A # Absolute
(prinst "bl" Adr) )
((=T A) # Indexed
(prinst "blr" Adr) ) )
(prinst "ldr" "x30" "[x28],8")
(unless (lst? Arg)
(prinst "add" 'sp 'sp "x20") ) ) # Restore stack
(asm func ())
(asm begin ()
(comment 'begin)
(prinst "stp" "x30" "x28" "[sp,-80]!")
(prinst "bl" "begin") )
(asm return ()
(comment 'return)
(prinst "b" "return") )
# Stack Manipulations
(asm push (Src S)
(comment 'push Src)
(setq Src (src Src S imm16))
(casq Src
(zscx
(prinst "mrs" "x15" "nzcv")
(prinst "bfm" "x15" "x9" 0 0)
(prinst "str" "x15" "[x28,-8]!") )
(zsc
(prinst "mrs" "x15" "nzcv")
(prinst "str" "x15" "[x28,-8]!") )
(x (prinst "str" "x9" "[x28,-8]!"))
(T (mov "[x28,-8]!" Src)) ) )
(asm pop (Dst D)
(comment 'pop Dst)
(setq Dst (dst Dst D))
(casq Dst
(zscx
(prinst "ldr" "x15" "[x28],8")
(prinst "sbfm" "x9" "x15" 0 0)
(prinst "msr" "nzcv" "x15") )
(zsc
(prinst "ldr" "x15" "[x28],8")
(prinst "msr" "nzcv" "x15") )
(x (prinst "ldr" "x9" "[x28],8"))
(T (mov Dst "[x28],8")) ) )
(asm link ()
(comment 'link)
(prinst "str" "x29" "[x28,-8]!")
(prinst "mov" "x29" "x28") )
(asm tuck (Src S)
(comment 'tuck Src)
(setq Src (src Src S imm16))
(prinst "ldr" "x29" "[x28]")
(mov "[x28]" Src) )
(asm drop ()
(comment 'drop)
(prinst "ldr" "x28" "[x29]")
(prinst "ldr" "x29" "[x28],8") )
# Evaluation
(asm eval ()
(comment 'eval)
(prinst "ands" 'xzr "x20" "#0x06") # Number?
(prinst "b.ne" "2f") # Yes: Skip
(prinst "tbz" "x20" "#3" "1f") # Symbol:
(prinst "ldr" "x20" "[x20]") # Get value
(prinst "b" "2f") # and skip
(prinl "1:")
(prinst "str" "x30" "[x28,-8]!")
(prinst "bl" 'evListE_E) # Else evaluate list
(prinst "ldr" "x30" "[x28],8")
(prinl "2:") )
(asm eval+ ()
(comment 'eval+)
(prinst "ands" 'xzr "x20" "#0x06") # Number?
(prinst "b.ne" "2f") # Yes: Skip
(prinst "tbz" "x20" "#3" "1f") # Symbol:
(prinst "ldr" "x20" "[x20]") # Get value
(prinst "b" "2f") # and skip
(prinl "1:")
(prinst "str" "x29" "[x28,-8]!") # Else 'link'
(prinst "mov" "x29" "x28")
(prinst "str" "x30" "[x28,-8]!")
(prinst "bl" 'evListE_E) # Evaluate list
(prinst "ldr" "x30" "[x28],8")
(prinst "ldr" "x29" "[x28],8")
(prinl "2:") )
(asm eval/ret ()
(comment 'eval/ret)
(prinst "ands" 'xzr "x20" "#0x06") # Number?
(prinst "b.ne" "1f") # Yes: Return
(prinst "ands" 'xzr "x20" "#0x08") # Symbol?
(prinst "b.eq" 'evListE_E) # No
(prinst "ldr" "x20" "[x20]") # Else get value
(prinl "1:")
(prinst "ret") )
(asm exec (Reg)
(comment 'exec Reg)
(prinl "1:") # do
(prinst "ldr" "x20" # ld E (R)
(pack "[" Reg "]") )
(prinst "ands" 'wzr "w20" "#0x0E") # atom E
(prinst "b.ne" "2f")
(prinst "str" "x30" "[x28,-8]!")
(prinst "bl" 'evListE_E) # Evaluate list
(prinst "ldr" "x30" "[x28],8")
(prinl "2:")
(prinst "ldr" Reg # ld R (R CDR)
(pack "[" Reg ",8]") )
(prinst "ands" 'xzr Reg "#0x0E") # atom R
(prinst "b.eq" "1b") ) # until nz
(asm prog (Reg)
(comment 'prog Reg)
(prinl "1:") # do
(prinst "ldr" "x20" # ld E (R)
(pack "[" Reg "]") )
(prinst "ands" 'wzr "w20" "#0x06") # eval
(prinst "b.ne" "3f")
(prinst "tbz" "w20" "#3" "2f")
(prinst "ldr" "x20" "[x20]")
(prinst "b" "3f")
(prinl "2:")
(prinst "str" "x30" "[x28,-8]!")
(prinst "bl" 'evListE_E)
(prinst "ldr" "x30" "[x28],8")
(prinl "3:")
(prinst "ldr" Reg # ld R (R CDR)
(pack "[" Reg ",8]") )
(prinst "ands" 'xzr Reg "#0x0E") # atom R
(prinst "b.eq" "1b") ) # until nz
# System
(asm initData ())
(asm initCode ()
(unless *FPic
(label "div") # x19:x0 / x1
(let
(@u1 "x19" @u0 "x0" @src "x1" @s "x2" # un21 = un32 = u1
@un1 "x3" @un0 "x4" @vn1 "x5" @vn0 "x6" @t "x7" @t2 "x8"
@q1 "x15" @q0 "x16" @rhat "x17" )
(macro
(prinst "cmp" @u1 @src) # u1 >= src?
(prinst "b.hs" "divOvfl") # Yes: Overflow
(prinst "mov" @s 0) # Init 's'
(prinst "cmp" @src 0) # Normalize
(prinst "b.le" "div2")
(prinl "div1:")
(prinst "add" @s @s "#1") # Increment 's'
(prinst "adds" @u0 @u0 @u0) # Shift dividend left
(prinst "adc" @u1 @u1 @u1)
(prinst "adds" @src @src @src) # and divisor
(prinst "b.pl" "div1")
(prinl "div2:")
(prinst "ubfm" @vn1 @src 32 63) # Split divisor into high 32 bits
(prinst "ubfm" @vn0 @src 0 31) # and low 32 bits
(prinst "ubfm" @un1 @u0 32 63) # Split 'u0' into high 32 bits
(prinst "ubfm" @un0 @u0 0 31) # and low 32 bits
(prinst "udiv" @q1 @u1 @vn1) # First quotient digit
(prinst "mul" @t @q1 @vn1)
(prinst "sub" @rhat @u1 @t)
(prinl "div3:")
(prinst "ands" 'xzr @q1 `(hex "FFFFFFFF00000000")) # q1 >= b?
(prinst "b.ne" "div4") # Yes
(prinst "lsl" @t2 @rhat "#32") # b*rhat + un1
(prinst "add" @t2 @t2 @un1)
(prinst "mul" @t @q1 @vn0)
(prinst "cmp" @t @t2) # q1 * vn0 > b*rhat + un1?
(prinst "b.ls" "div5") # No
(prinl "div4:")
(prinst "sub" @q1 @q1 "#1") # Else decrement 'q1'
(prinst "add" @rhat @rhat @vn1) # Increment 'rhat'
(prinst "ands" 'xzr @rhat `(hex "FFFFFFFF00000000")) # Less than 'b'?
(prinst "b.eq" "div3") # Yes
(prinl "div5:")
(prinst "lsl" @u1 @u1 "#32") # (un32*b)
(prinst "add" @u1 @u1 @un1) # (un1 + un32*b)
(prinst "mul" @t @q1 @src)
(prinst "sub" @u1 @u1 @t) # un21 = un1 + un32*b - q1*src
(prinst "udiv" @q0 @u1 @vn1) # Second quotient digit
(prinst "mul" @t @q0 @vn1)
(prinst "sub" @rhat @u1 @t)
(prinl "div6:")
(prinst "ands" 'xzr @q0 `(hex "FFFFFFFF00000000")) # q0 >= b?
(prinst "b.ne" "div7") # Yes
(prinst "lsl" @t2 @rhat "#32") # b*rhat + un0
(prinst "add" @t2 @t2 @un0)
(prinst "mul" @t @q0 @vn0)
(prinst "cmp" @t @t2) # q0 * vn0 > b*rhat + un0?
(prinst "b.ls" "div8") # No
(prinl "div7:")
(prinst "sub" @q0 @q0 "#1") # Else decrement 'q0'
(prinst "add" @rhat @rhat @vn1) # Increment 'rhat'
(prinst "ands" 'xzr @rhat `(hex "FFFFFFFF00000000")) # Less than 'b'?
(prinst "b.eq" "div6") # Yes
(prinl "div8:")
(prinst "lsl" @u0 @q1 "#32") # Quotient
(prinst "add" @u0 @u0 @q0)
(prinst "lsl" @u1 @u1 "#32") # Remainder: u1 = (un0 + un21*b - q0*src) >> s
(prinst "add" @u1 @u1 @un0)
(prinst "mul" @t @q0 @src)
(prinst "sub" @u1 @u1 @t)
(prinst "lsr" @u1 @u1 @s)
(prinst "ret")
(prinl "divOvfl:")
(prinst "mov" @u0 -1) # Overflow
(prinst "mov" @u1 -1)
(prinst "ret") ) )
(prinl)
(label "begin")
(prinst "stp" "x20" "x19" "[sp,64]")
(prinst "stp" "x22" "x21" "[sp,48]")
(prinst "stp" "x24" "x23" "[sp,32]")
(prinst "stp" "x26" "x25" "[sp,16]")
(prinst "mov" "x19" "x1") # C
(prinst "mov" "x20" "x2") # E
(prinst "mov" "x21" "x3") # X
(prinst "mov" "x22" "x4") # Y
(prinst "mov" "x23" "x5") # Z
(prinst "adrp" "x24" ":got:Nil") # Nil
(prinst "ldr" "x24" "[x24, #:got_lo12:Nil]")
(prinst "adrp" "x25" ":got:TSym") # T
(prinst "ldr" "x25" "[x25, #:got_lo12:TSym]")
(prinst "adrp" "x26" ":got:StkLimit") # StkLimit
(prinst "ldr" "x26" "[x26, #:got_lo12:StkLimit]")
(prinst "mov" "x28" 'sp)
(prinst "sub" 'sp 'sp "#4096")
(prinst "ret")
(prinl)
(label "return")
(prinst "mov" 'sp "x28")
(prinst "ldp" "x20" "x19" "[sp,64]")
(prinst "ldp" "x22" "x21" "[sp,48]")
(prinst "ldp" "x24" "x23" "[sp,32]")
(prinst "ldp" "x26" "x25" "[sp,16]")
(prinst "ldp" "x30" "x28" "[sp],80")
(prinst "ret")
(prinl)
(label "ldInt")
(prinst "ldr" "x0" "[x12],8") # Load integer register
(prinst "add" "x13" "x13" "#12") # Skip to next loader
(prinst "ret")
(prinst "ldr" "x1" "[x12],8")
(prinst "add" "x13" "x13" "#12")
(prinst "ret")
(prinst "ldr" "x2" "[x12],8")
(prinst "add" "x13" "x13" "#12")
(prinst "ret")
(prinst "ldr" "x3" "[x12],8")
(prinst "add" "x13" "x13" "#12")
(prinst "ret")
(prinst "ldr" "x4" "[x12],8")
(prinst "add" "x13" "x13" "#12")
(prinst "ret")
(prinst "ldr" "x5" "[x12],8")
(prinst "add" "x13" "x13" "#12")
(prinst "ret")
(prinst "ldr" "x6" "[x12],8")
(prinst "add" "x13" "x13" "#12")
(prinst "ret")
(prinst "ldr" "x7" "[x12],8")
(prinst "add" "x13" "x13" "#12")
(prinst "ret")
(prinst "ldr" "x16" "[x12],8") # Store in stack
(prinst "str" "x16" "[x11],8")
(prinst "ret")
(prinl)
(label "ldFlt")
(prinst "fmov" "s0" "s17") # Load float register
(prinst "add" "x14" "x14" "#12") # Skip to next loader
(prinst "ret")
(prinst "fmov" "s1" "s17")
(prinst "add" "x14" "x14" "#12")
(prinst "ret")
(prinst "fmov" "s2" "s17")
(prinst "add" "x14" "x14" "#12")
(prinst "ret")
(prinst "fmov" "s3" "s17")
(prinst "add" "x14" "x14" "#12")
(prinst "ret")
(prinst "fmov" "s4" "s17")
(prinst "add" "x14" "x14" "#12")
(prinst "ret")
(prinst "fmov" "s5" "s17")
(prinst "add" "x14" "x14" "#12")
(prinst "ret")
(prinst "fmov" "s6" "s17")
(prinst "add" "x14" "x14" "#12")
(prinst "ret")
(prinst "fmov" "s7" "s17")
(prinst "add" "x14" "x14" "#12")
(prinst "ret")
(prinst "add" "x12" "x12" "#8") # Ignore
(prinst "ret")
(prinl)
(label "ldDbl")
(prinst "fmov" "d0" "d17") # Load double register
(prinst "add" "x15" "x15" "#12") # Skip to next loader
(prinst "ret")
(prinst "fmov" "d1" "d17")
(prinst "add" "x15" "x15" "#12")
(prinst "ret")
(prinst "fmov" "d2" "d17")
(prinst "add" "x15" "x15" "#12")
(prinst "ret")
(prinst "fmov" "d3" "d17")
(prinst "add" "x15" "x15" "#12")
(prinst "ret")
(prinst "fmov" "d4" "d17")
(prinst "add" "x15" "x15" "#12")
(prinst "ret")
(prinst "fmov" "d5" "d17")
(prinst "add" "x15" "x15" "#12")
(prinst "ret")
(prinst "fmov" "d6" "d17")
(prinst "add" "x15" "x15" "#12")
(prinst "ret")
(prinst "fmov" "d7" "d17")
(prinst "add" "x15" "x15" "#12")
(prinst "ret")
(prinst "add" "x12" "x12" "#8") # Ignore
(prinst "ret") ) )
(asm initMain ()
(prinst "ldr" "x21" "[x1]") # Get command in X
(prinst "add" "x22" "x1" "#8") # argument vector in Y
(prinst "add" "x23" "x1" "x0" "LSL#3") # pointer to last argument in Z
(prinst "sub" "x23" "x23" "#8")
(prinst "adrp" "x24" ":got:Nil") # Nil
(prinst "ldr" "x24" "[x24, #:got_lo12:Nil]")
(prinst "adrp" "x25" ":got:TSym") # T
(prinst "ldr" "x25" "[x25, #:got_lo12:TSym]")
(prinst "adrp" "x26" ":got:StkLimit") # StkLimit
(prinst "ldr" "x26" "[x26, #:got_lo12:StkLimit]")
(prinst "mov" "x28" 'sp) # Set stack pointer
(prinst "sub" 'sp 'sp "#4096") )
(asm initLib ())
(asm stop ()
(comment 'stop)
(prinst "mov" "x0" "x20") # Return 'E'
(prinst "bl" "exit") )
### Optimizer ###
# Replace the the next 'cnt' elements with 'lst'
(de optimize (Lst) #> (cnt . lst)
(cond
((memq (caar Lst) '(cnt big sym))
(cond
((memq (caadr Lst) '(jz jnz))
(and
(or
(= `(char ".") (char (get Lst 2 2)))
(and
(cdr (split (chop (get Lst 2 2)) "_"))
(format (last @)) ) )
(optimBranch Lst) ) )
((and (memq (caadr Lst) '(ldz ldnz)) (not (needCC (cddr Lst))))
(let? L (cadr Lst)
(unless (and (reg? (cadr L)) (reg? (cadddr L)))
(optimBranch Lst) ) ) ) ) )
((memq (caar Lst) '(null nulp nul4 nul))
(cond
((memq (caadr Lst) '(jz jnz))
(and
(not (needCC (cons (cons 'jmp (cdadr Lst)) (cddr Lst))))
(nor (pre? "ret" (get Lst 2 2)) (pre? "Ret" (get Lst 2 2)))
(optimBranch Lst) ) )
((and (memq (caadr Lst) '(ldz ldnz)) (not (needCC (cddr Lst))))
(let? L (cadr Lst)
(unless (and (reg? (cadr L)) (reg? (cadddr L)))
(optimBranch Lst) ) ) ) ) )
((noCC Lst)
(cons 1 (cons (cons @ (cdar Lst)))) ) ) )
(de optimBranch (Lst)
(cons 2
(list
(cons
(intern (pack (caar Lst) '/ (caadr Lst)))
(append (cdar Lst) (cdadr Lst)) ) ) ) )
### Decoration ###
(de prolog (File)
(when *FPic
(in "arm64.symtab"
(setq *Globals (read)) ) ) )
(de epilog (File)
(unless *FPic
(out "arm64.symtab"
(println *Globals) ) ) )
# vi:et:ts=3:sw=3
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