adding to lisp library

LispLibrary.h

@@ -172,5 +172,31 @@ Returns a list with all items for which tst is true removed from lst."
 Returns a list with all items for which tst is false removed from lst."
   (mapcan #'(lambda (x) (when (funcall tst x) (list x))) lst))
 
+(defun rtc-set (hr min)
+ "(rtc-set hr min)
+Set the time on a DS3231 RTC. Times are in BCD, so use
+the appropriate reader macro, e.g. (rtc-set #x12 #x34)
+for 12:34. Assumes seconds are zero."
+  (with-i2c (str #x68)
+    (write-byte 0 str)
+    (write-byte 0 str)
+    (write-byte min str)
+    (write-byte hr str)))
+
+(defun rtc-get ()
+  (with-i2c (str #x68)
+    (write-byte 0 str)
+    (restart-i2c str 3)
+    (reverse
+      (list
+        (read-byte str)
+        (read-byte str)
+        (read-byte str)))))
+
+(defun rtc-now ()
+ "(rtc-now)
+Set the time using the RTC."
+  (now (rtc-get)))
+
 )lisplibrary";
 

lisp/armasm.lsp

@@ -0,0 +1,363 @@
+; ARM Thumb Assembler for uLisp - Version 10 - 18th November 2024
+; see http://www.ulisp.com/show?2YRU
+;
+
+; Extract register number
+(defun regno (sym)
+  (case sym (sp 13) (lr 14) (pc 15)
+    (t (read-from-string (subseq (string sym) 1)))))
+
+; Pack arguments into bit fields
+(defun emit (bits &rest args)
+  (let ((word 0) (shift -28))
+    (mapc #'(lambda (value)
+	      (let ((width (logand (ash bits shift) #xf)))
+		(incf shift 4)
+		(unless (zerop (ash value (- width))) (error "Won't fit"))
+		(setq word (logior (ash word width) value))))
+	  args)
+    word))
+
+(defun offset (label) (ash (- label *pc* 4) -1))
+
+; data
+
+(defun $word (val)
+  (append
+    (unless (zerop (mod *pc* 4)) (list ($nop)))
+    (list (logand val #xffff) (logand (ash val -16) #xffff))))
+
+; Shared routines, ordered by first four bits
+
+; lsl lsr 0
+
+(defun lsl-lsr-0 (op argd argm immed5)
+  (emit #x41533000 0 op immed5 (regno argm) (regno argd)))
+
+; asr 0
+
+(defun asr-0 (op argd argm immed5)
+  (emit #x41533000 1 op immed5 (regno argm) (regno argd)))
+
+; add sub 1
+
+(defun add-sub-1 (op argd argn argm)
+  (cond
+    ((numberp argm)
+     (emit #x61333000 #b000111 op argm (regno argn) (regno argd)))
+    ((null argm)
+     (emit #x61333000 #b000110 op (regno argn) (regno argd) (regno argd)))
+    (t
+      (emit #x61333000 #b000110 op (regno argm) (regno argn) (regno argd)))))
+
+; mov sub 2 3
+
+(defun mov-sub-2-3 (op2 op argd immed8)
+  (emit #x41380000 op2 op (regno argd) immed8))
+
+; add mov 4
+
+(defun add-mov-4 (op argd argm)
+  (let ((rd (regno argd))
+	(rm (regno argm)))
+    (cond
+      ((and (>= rd 8) (>= rm 8))
+       (emit #x61333000 #b010001 op #b011 (- rm 8) (- rd 8)))
+      ((>= rm 8)
+       (emit #x61333000 #b010001 op #b001 (- rm 8) rd))
+      ((>= rd 8)
+       (emit #x61333000 #b010001 op #b010 rm (- rd 8))))))
+
+; reg-reg
+
+(defun reg-reg (op argd argm)
+  (emit #xa3300000 op (regno argm) (regno argd)))
+
+; bx blx 4
+
+(defun bx-blx (op argm)
+  (emit #x81430000 #b01000111 op (regno argm) 0))
+
+; str ldr 4, 6, 9
+
+(defun str-ldr (op argd arg2)
+  (cond
+    ((numberp arg2)
+     (when (= op 0) (error "str not allowed with label"))
+     (let ((arg (- (truncate (+ arg2 2) 4) (truncate *pc* 4) 1)))
+       (emit #x41380000 4 1 (regno argd) (max 0 arg))))
+    ((listp arg2)
+     (let ((argn (first arg2))
+	   (immed (or (eval (second arg2)) 0)))
+       (unless (zerop (mod immed 4)) (error "not multiple of 4"))
+       (cond
+	 ((eq (regno argn) 15)
+	  (when (= op 0) (error "str not allowed with pc"))
+	  (emit #x41380000 4 1 (regno argd) (truncate immed 4)))
+	 ((eq (regno argn) 13)
+	  (emit #x41380000 9 op (regno argd) (truncate immed 4)))
+	 (t
+	   (emit #x41533000 6 op (truncate immed 4) (regno argn) (regno argd))))))
+    (t (error "illegal argument"))))
+
+(defun str-ldr-5 (op argd arg2)
+  (cond
+    ((listp arg2)
+     (let ((argn (first arg2))
+	   (argm (second arg2)))
+       (emit #x43333000 5 op (regno argm) (regno argn) (regno argd))))
+    (t (error "illegal argument"))))
+
+; add-10
+
+(defun add-10 (op argd immed8)
+  (emit #x41380000 #b1010 op (regno argd) (truncate immed8 4)))
+
+; add-sub-11
+
+(defun add-sub-11 (op immed7)
+  (emit #x81700000 #b11010000 op (truncate immed7 4)))
+
+; push pop 11
+
+(defun push-pop (op lst)
+  (let ((byte 0)
+	(r 0))
+    (mapc #'(lambda (x) 
+	      (cond
+		((and (= op 0) (eq x 'lr)) (setq r 1))
+		((and (= op 1) (eq x 'pc)) (setq r 1))
+		(t (setq byte (logior byte (ash 1 (regno x))))))) lst)
+    (emit #x41218000 11 op 2 r byte)))
+
+; b cond 13
+
+(defun b-cond-13 (cnd label)
+  (let ((soff8 (logand (offset label) #xff)))
+    (emit #x44800000 13 cnd soff8)))
+
+(defun cpside (op aif)
+  (emit #xb1130000 #b10110110011 op 0 aif))
+
+; Alphabetical list of mnemonics
+
+(defun $adc (argd argm)
+  (reg-reg #b0100000101 argd argm))
+
+(defun $add (argd argn &optional argm)
+  (cond
+    ((numberp argm)
+     (cond
+       ((eq (regno argn) 15)
+	(add-10 0 argd argm))
+       ((eq (regno argn) 13)
+	(add-10 1 argd argm))
+       (t (add-sub-1 0 argd argn argm))))
+    ((and (numberp argn) (null argm))
+     (cond
+       ((eq (regno argd) 13)
+	(add-sub-11 0 argn))
+       (t
+	 (mov-sub-2-3 3 0 argd argn))))
+    (t
+      (cond
+	((or (>= (regno argd) 8) (>= (regno argn) 8))
+	 (add-mov-4 0 argd argn))
+	(t
+	  (add-sub-1 0 argd argn argm))))))
+
+(defun $and (argd argm)
+  (reg-reg #b0100000000 argd argm))
+
+(defun $asr (argd argm &optional arg2)
+  (unless arg2 (setq arg2 argm argm argd))
+  (cond
+    ((numberp arg2)
+     (asr-0 0 argd argm arg2))
+    ((eq argd argm)
+     (reg-reg #b0100000100 argd arg2))
+    (t (error "First 2 registers must be the same"))))
+
+(defun $b (label)
+  (emit #x41b00000 #xe 0 (logand (offset label) #x7ff)))
+
+(defun $bcc (label)
+  (b-cond-13 3 label))
+
+(defun $bcs (label)
+  (b-cond-13 2 label))
+
+(defun $beq (label)
+  (b-cond-13 0 label))
+
+(defun $bge (label)
+  (b-cond-13 10 label))
+
+(defun $bgt (label)
+  (b-cond-13 12 label))
+
+(defun $bhi (label)
+  (b-cond-13 8 label))
+
+(defun $bhs (label)
+  (b-cond-13 2 label))
+
+(defun $ble (label)
+  (b-cond-13 13 label))
+
+(defun $blo (label)
+  (b-cond-13 3 label))
+
+(defun $blt (label)
+  (b-cond-13 11 label))
+
+(defun $bmi (label)
+  (b-cond-13 4 label))
+
+(defun $bne (label)
+  (b-cond-13 1 label))
+
+(defun $bpl (label)
+  (b-cond-13 5 label))
+
+(defun $bic (argd argm)
+  (reg-reg #b0100001110 argd argm))
+
+(defun $bl (label)
+  (list
+    (emit #x5b000000 #b11110 (logand (ash (offset label) -11) #x7ff))
+    (emit #x5b000000 #b11111 (logand (offset label) #x7ff))))
+
+(defun $blx (argm)
+  (bx-blx 1 argm))
+
+(defun $bx (argm)
+  (bx-blx 0 argm))
+
+(defun $cmn (argd argm)
+  (reg-reg #b0100001011 argd argm))
+
+(defun $cmp (argd argm)
+  (cond
+    ((numberp argm)
+     (mov-sub-2-3 2 1 argd argm))
+    (t
+      (reg-reg #b0100001010 argd argm))))
+
+(defun $cpsid (aif)
+  (cpside 1 aif))
+
+(defun $cpsie (aif)
+  (cpside 0 aif))
+
+(defun $eor (argd argm)
+  (reg-reg #b0100000001 argd argm))
+
+(defun $ldr (argd arg2)
+  (str-ldr 1 argd arg2))
+
+(defun $ldrb (argd arg2)
+  (str-ldr-5 6 argd arg2))
+
+(defun $ldrh (argd arg2)
+  (str-ldr-5 5 argd arg2))
+
+(defun $ldrsb (argd arg2)
+  (str-ldr-5 3 argd arg2))
+
+(defun $ldrsh (argd arg2)
+  (str-ldr-5 7 argd arg2))
+
+(defun $lsl (argd argm &optional arg2)
+  (unless arg2 (setq arg2 argm argm argd))
+  (cond
+    ((numberp arg2)
+     (lsl-lsr-0 0 argd argm arg2))
+    ((eq argd argm)
+     (reg-reg #b0100000010 argd arg2))
+    (t (error "First 2 registers must be the same"))))
+
+(defun $lsr (argd argm &optional arg2)
+  (unless arg2 (setq arg2 argm argm argd))
+  (cond
+    ((numberp arg2)
+     (lsl-lsr-0 1 argd argm arg2))
+    ((eq argd argm)
+     (reg-reg #b0100000011 argd arg2))
+    (t (error "First 2 registers must be the same"))))
+
+(defun $mov (argd argm)
+  (cond
+    ((numberp argm)
+     (mov-sub-2-3 2 0 argd argm))
+    ((or (>= (regno argd) 8) (>= (regno argm) 8))
+     (add-mov-4 1 argd argm))
+    (t ; Synonym of LSLS Rd, Rm, #0
+      (lsl-lsr-0 0 argd argm 0))))
+
+(defun $mul (argd argm)
+  (reg-reg #b0100001101 argd argm))
+
+(defun $mvn (argd argm)
+  (reg-reg #b0100001111 argd argm))
+
+(defun $neg (argd argm)
+  (reg-reg #b0100001001 argd argm))
+
+(defun $nop () ; mov r8,r8
+  (add-mov-4 1 'r8 'r8))
+
+(defun $orr (argd argm)
+  (reg-reg #b0100001100 argd argm))
+
+(defun $push (lst)
+  (push-pop 0 lst))
+
+(defun $pop (lst)
+  (push-pop 1 lst))
+
+(defun $rev (argd argm)
+  (reg-reg #b1011101000 argd argm))
+
+(defun $rev16 (argd argm)
+  (reg-reg #b1011101001 argd argm))
+
+(defun $revsh (argd argm)
+  (reg-reg #b1011101010 argd argm))
+
+(defun $ror (argd argm)
+  (reg-reg #b0100000111 argd argm))
+
+(defun $sbc (argd argm)
+  (reg-reg #b0100000110 argd argm))
+
+(defun $str (argd arg2)
+  (str-ldr 0 argd arg2))
+
+(defun $strb (argd arg2)
+  (str-ldr-5 2 argd arg2))
+
+(defun $sub (argd argn &optional argm)
+  (cond
+    ((not (numberp argn))
+     (add-sub-1 1 argd argn argm))
+    ((eq (regno argd) 13)
+     (add-sub-11 1 argn))
+    (t
+      (mov-sub-2-3 3 1 argd argn))))
+
+(defun $sxtb (argd argm)
+  (reg-reg #b1011001001 argd argm))
+
+(defun $sxth (argd argm)
+  (reg-reg #b1011001000 argd argm))
+
+(defun $tst (argd argm)
+  (reg-reg #b0100001000 argd argm))
+
+(defun $uxtb (argd argm)
+  (reg-reg #b1011001011 argd argm))
+
+(defun $uxth (argd argm)
+  (reg-reg #b1011001010 argd argm))
+

lisp/r5asm.lsp

@@ -0,0 +1,395 @@
+; RISC-V Assembler - Version 4 - 18th October 2024
+; see http://www.ulisp.com/show?310Z
+;
+
+; Extract register number
+(defun regno (sym)
+  (case sym (zero 0) (ra 1) (sp 2) (gp 3) (tp 4) ((s0 fp) 8) (s1 9)
+    (t (let* ((s (string sym))
+              (c (char s 0))
+              (n (read-from-string (subseq s 1))))
+         (case c (#\x n) (#\a (+ n 10)) (#\s (+ n 16)) (#\t (if (<= n 2) (+ n 5) (+ n 25))))))))
+
+; Short 3-bit register s0, s1, a0 to a5
+(defun cregp (rd) (<= 8 (regno rd) 15))
+
+(defun cregno (sym) (logand (regno sym) #x7))
+
+; Pack arguments into bit fields
+(defun emit (bits &rest args)
+  (let ((word 0))
+    (mapc #'(lambda (width value)
+              (unless (zerop (ash value (- width))) (error* "Won't fit"))
+              (setq word (logior (ash word width) value)))
+          bits args)
+    word))
+
+; 32-bit emit
+(defun emit32 (bits &rest args)
+  (let ((word (apply #'emit bits args)))
+    (list (logand word #xffff) (logand (ash word -16) #xffff))))
+
+; Errors
+(defun error* (txt) (format t "(pc=#x~x) ~a~%" *pc* txt))
+
+; Test range of immediate signed values
+(defun immp (x b)
+  (<= (- (ash 1 (1- b))) x (1- (ash 1 (1- b)))))
+
+; Extract bitfield
+(defun bits (x a &optional b)
+  (if b (logand (ash x (- b)) (1- (ash 1 (- a b -1))))
+    (logand (ash x (- a)) 1)))
+
+(defun offset (label) (- label *pc*))
+
+; Instruction formats
+
+(defun reg (funct7 rs2 rs1 funct3 rd op)
+  (emit32 '(7 5 5 3 5 7) funct7 (regno rs2) (regno rs1) funct3 (regno rd) op))
+
+(defun creg (op3 op1 op2 rd op2b rs2)
+  (cond
+   ((and (cregp rd) (cregp rs2))
+    (emit '(3 1 2 3 2 3 2) op3 op1 op2 (cregno rd) op2b (cregno rs2) 1))
+   (t (error* "C won't fit"))))
+
+(defun immed (imm12 rs1 funct3 rd op)
+  (cond
+   ((immp imm12 12)
+    (emit32 '(12 5 3 5 7) (logand imm12 #xfff) (regno rs1) funct3 (regno rd) op))
+   (t
+    (error* "Immediate value out of range"))))
+
+(defun cimmed (imm12 rs1 funct3 rd op)
+  (emit32 '(12 5 3 5 7) imm12 (regno rs1) funct3 (regno rd) op))
+
+(defun branch (imm12 rs2 rs1 funct3 funct7)
+  (let ((off (offset imm12)))
+    (emit32 '(1 6 5 5 3 4 1 7) 
+           (bits off 12) (bits off 10 5) (regno rs2) 
+           (regno rs1) funct3 (bits off 4 1) (bits off 11) funct7)))
+
+(defun jump (imm20 imm10-1 imm11 imm19-12 rd op)
+  (emit32 '(1 10 1 8 5 7) imm20 imm10-1 imm11 imm19-12 rd op))
+
+(defun muldiv (rs2 rs1 funct3 rd funct7)
+  (emit32 '(7 5 5 3 5 7) 1 (regno rs2) (regno rs1) funct3 (regno rd) funct7))
+
+(defun store (imm src base op)
+  (emit32 '(7 5 5 3 5 7) (bits imm 11 5) (regno src) (regno base) op (bits imm 4 0) #x23))
+
+(defun cimm6 (rd imm op1 op2)
+  (emit '(3 1 5 5 2) op1 (bits imm 5) (regno rd) (bits imm 4 0) op2))
+
+(defun cimm6* (rd imm op1 op2 op3)
+  (emit '(3 1 2 3 5 2) op1 (bits imm 5) op2 (cregno rd) (bits imm 4 0) op3))
+
+;
+; Alphabetical list of mnemonics
+;
+
+(defun $add (rd rs1 rs2)
+  (cond
+   ((eq rd rs1)
+    (emit '(3 1 5 5 2) 4 1 (regno rd) (regno rs2) 2))
+   (t (reg 0 rs2 rs1 0 rd #x33))))
+
+(defun $addi (rd rs1 imm)
+  (cond
+   ((and (eq rd rs1) (immp imm 6))
+    (cimm6 rd imm 0 1))
+   ((and (= (regno rd) 2) (= (regno rs1) 2) (immp imm 10))
+    (emit '(3 1 5 1 1 2 1 2) 3 (bits imm 9) 2 (bits imm 4) (bits imm 6) (bits imm 8 7) (bits imm 5) 1))
+   (t (immed imm rs1 0 rd #x13))))
+
+(defun $and (rd rs1 rs2)
+  (cond
+   ((and (eq rd rs1) (cregp rd) (cregp rs2))
+    (creg 4 0 3 rd 3 rs2))
+   (t (reg 0 rs2 rs1 7 rd #x33))))
+
+(defun $andi (rd rs1 imm)
+  (cond
+   ((and (eq rd rs1) (cregp rd) (immp imm 5))
+    (cimm6* rd imm 4 2 1))
+   (t (immed imm rs1 7 rd #x13))))
+
+(defun $auipc (rd imm)
+  (cond
+   ((zerop (logand imm #xfff))
+    (emit32 '(20 5 7) (bits imm 31 12) (regno rd) #x17))
+   (t (error* "auipc no good"))))
+
+(defun $beq (rs1 rs2 imm12)
+  (branch imm12 rs2 rs1 0 #x63))
+
+(defun $beqz (rs imm)
+  (let ((off (offset imm)))
+    (cond
+     ((and (immp off 8) (cregp rs))
+      (emit '(3 1 2 3 2 2 1 2) 6 (bits off 8) (bits off 4 3) 
+            (cregno rs) (bits off 7 6) (bits off 2 1) (bits off 5) 1))
+     (t ($beq rs 'x0 imm)))))
+
+(defun $bge (rs1 rs2 imm12)
+  (branch imm12 rs2 rs1 5 #x63))
+
+(defun $bgeu (rs1 rs2 imm12)
+  (branch imm12 rs2 rs1 7 #x63))
+
+(defun $bgez (rs1 imm12)
+  ($bge rs1 'x0 imm12))
+
+(defun $bgt (rs1 rs2 imm12)
+  ($blt rs2 rs1 imm12))
+
+(defun $bgtu (rs1 rs2 imm12)
+  ($bltu rs2 rs1 imm12))
+
+(defun $bgtz (rs1 imm12)
+  ($blt 'x0 rs1 imm12))
+    
+(defun $ble (rs1 rs2 imm12)
+  ($bge rs2 rs1 imm12))
+
+(defun $bleu (rs1 rs2 imm12)
+  ($bgeu rs2 rs1 imm12))
+
+(defun $blez (rs2 imm12)
+  ($bge 'x0 rs2 imm12))
+
+(defun $blt (rs1 rs2 imm12)
+  (branch imm12 rs2 rs1 4 #x63))
+
+(defun $bltu (rs1 rs2 imm12)
+  (branch imm12 rs2 rs1 6 #x63))
+
+(defun $bltz (rs1 imm12)
+  ($blt rs1 'x0 imm12))
+
+(defun $bne (rs1 rs2 imm12)
+  (branch imm12 rs2 rs1 1 #x63))
+
+(defun $bnez (rs imm)
+  (let ((off (offset imm)))
+    (cond
+     ((and (immp off 8) (cregp rs))
+      (emit '(3 1 2 3 2 2 1 2) 7 (bits off 8) (bits off 4 3) 
+            (cregno rs) (bits off 7 6) (bits off 2 1) (bits off 5) 1))
+     (t ($bne rs 'x0 imm)))))
+
+(defun $div (rd rs1 rs2)
+  (muldiv rs2 rs1 4 rd #x33)) 
+
+(defun $divu (rd rs1 rs2)
+  (muldiv rs2 rs1 5 rd #x33))
+
+(defun $divw (rd rs1 rs2)
+  (muldiv rs2 rs1 4 rd #x3b))
+
+(defun $divuw (rd rs1 rs2)
+  (muldiv rs2 rs1 5 rd #x3b))
+
+(defun $fence () (emit32 '(16 16) #x0ff0 #x000f))
+
+(defun $j (label)
+  (let ((off (offset label)))
+      (emit '(3 1 1 2 1 1 1 3 1 2) 5 (bits off 11) (bits off 4) (bits off 9 8)
+          (bits off 10) (bits off 6) (bits off 7) (bits off 3 1) (bits off 5) 1)))
+
+; C.JAL is RV32 only
+(defun $jal (rd &optional label)
+  (when (null label) (setq label rd rd 'ra))
+  (let ((off (offset label)))
+    (emit32 '(1 10 1 8 5 7) (bits off 20) (bits off 10 1) (bits off 11) (bits off 19 12) (regno rd) #x6f)))
+
+(defun $jalr (label lst)
+  (let ((off (+ (offset label) 4)))
+    (emit32 '(12 5 3 5 7) (bits off 11 0) (regno (car lst)) 0 (regno (car lst)) #x67)))
+
+(defun $jr (rs1)
+  (emit '(3 1 5 5 2) 4 0 (regno rs1) 0 2))
+
+; In next four, imm can be omitted and defaults to 0
+(defun $lb (rd imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (immed imm (car lst) 0 rd 3))
+
+(defun $lbu (rd imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (immed imm (car lst) 4 rd 3))
+
+(defun $lh (rd imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (immed imm (car lst) 1 rd 3))
+
+(defun $lhu (rd imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (immed imm (car lst) 5 rd 3))
+
+; li pseudoinstruction - will load 32-bit immediates
+(defun $li (rd imm)
+  (cond
+   ((immp imm 6) ; 16 bit
+    (cimm6 rd imm 2 1))
+   ((immp imm 12) ; 32 bit
+    ($addi rd 'x0 imm))
+   (t (let ((imm12 (logand imm #x00000fff)) ; 64 bit
+            (imm20 (logand (ash imm -12) #xfffff)))
+        (append
+         ($lui rd (if (= (logand imm12 #x800) #x800) (+ imm20 #x1000) imm20))
+         ; $addi
+         (emit32 '(12 5 3 5 7) imm12 (regno rd) 0 (regno rd) #x13))))))
+
+(defun $lui (rd imm)
+  (cond
+   ((and (immp imm 6) (/= imm 0) (/= (regno rd) 0) (/= (regno rd) 2)) ; 16 bit
+    (cimm6 rd imm 3 1))
+   (t
+    (emit32 '(20 5 7) imm (regno rd) #x37))
+   (t (error* "lui no good"))))
+
+(defun $lw (rd imm lst)
+  (cond
+   ((listp lst)
+    (let ((base (car lst)))
+      (cond
+       ; rs1 = sp
+       ((and (= (regno base) 2))
+        (emit '(3 1 5 3 2 2) 2 (bits imm 5) (regno rd) (bits imm 4 2) (bits imm 7 6) 2))
+       ; rs1 = general
+       ((and (cregp rd) (cregp base))
+        (emit '(3 3 3 1 1 3 2) 2 (bits imm 5 3) (cregno base) (bits imm 2) (bits imm 6) (cregno rd) 0))
+       (t (immed imm base 2 rd 3)))))
+   (t (error* "Illegal 3rd arg"))))
+
+(defun $mul (rd rs1 rs2)
+  (muldiv rs2 rs1 0 rd #x33))
+
+(defun $mulh (rd rs1 rs2)
+  (muldiv rs2 rs1 1 rd #x33))  
+
+(defun $mulhsu (rd rs1 rs2)
+  (muldiv rs2 rs1 2 rd #x33)) 
+
+(defun $mulhu (rd rs1 rs2)
+  (muldiv rs2 rs1 3 rd #x33))
+
+(defun $mv (rd rs1)
+  (emit '(3 1 5 5 2) 4 0 (regno rd) (regno rs1) 2))
+
+(defun $neg (rd rs2)
+  ($sub rd 'x0 rs2))
+
+(defun $nop ()
+  ($addi 'x0 'x0 0))
+
+(defun $not (rd rs1)
+  ($xori rd rs1 -1))
+
+(defun $or (rd rs1 rs2)
+  (cond
+   ((and (eq rd rs1) (cregp rd) (cregp rs2))
+    (creg 4 0 3 rd 2 rs2))
+   (t (reg 0 rs2 rs1 6 rd #x33))))
+
+(defun $ori (rd rs1 imm)
+  (immed imm rs1 6 rd #x13))
+
+(defun $rem (rd rs1 rs2)
+  (muldiv rs2 rs1 6 rd #x33))
+
+(defun $remu (rd rs1 rs2)
+  (muldiv rs2 rs1 7 rd #x33))
+
+(defun $ret ()
+  ($jr 'ra))
+
+; In $sb, $sh, and $sw, imm can be omitted and defaults to 0
+(defun $sb (src imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (store imm src (car lst) 0))
+
+(defun $seqz (rd rs1)
+  ($sltiu rd rs1 1))
+
+(defun $sgtz (rd rs2)
+  ($slt rd 'x0 rs2))
+
+(defun $sh (src imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (store imm src (car lst) 1))
+
+(defun $sll (rd rs1 rs2)
+  (reg 0 rs2 rs1 1 rd #x33))
+
+(defun $slli (rd rs1 imm)
+  (cond
+   ((and (eq rd rs1))
+    (cimm6 rd imm 0 2))
+   (t (emit32 '(6 6 5 3 5 7) 0 imm (regno rs1) 1 (regno rd) #x13))))
+
+(defun $slt (rd rs1 rs2)
+  (reg 0 rs2 rs1 2 rd #x33))
+
+(defun $slti (rd rs1 imm)
+  (immed imm rs1 2 rd #x13))
+
+(defun $sltiu (rd rs1 imm)
+  (immed imm rs1 3 rd #x13))
+
+(defun $sltu (rd rs1 rs2)
+  (reg 0 rs2 rs1 3 rd #x33))
+
+(defun $sltz (rd rs1)
+  ($slt rd rs1 'x0))
+
+(defun $snez (rd rs2)
+  ($sltu rd 'x0 rs2))
+
+(defun $sra (rd rs1 rs2)
+  (reg #x20 rs2 rs1 2 rd #x33))
+
+(defun $srai (rd rs1 imm)
+  (cond
+   ((and (eq rd rs1) (cregp rd))
+    (cimm6* rd imm 4 1 1))
+   (t (emit32 '(6 6 5 3 5 7) #x10 imm (regno rs1) 5 (regno rd) #x13))))
+
+(defun $srl (rd rs1 rs2)
+  (reg 0 rs2 rs1 5 rd #x33))
+
+(defun $srli (rd rs1 imm)
+  (cond
+   ((and (eq rd rs1) (cregp rd))
+    (cimm6* rd imm 4 0 1))
+   (t (emit32 '(6 6 5 3 5 7) 0 imm (regno rs1) 5 (regno rd) #x13))))
+
+(defun $sub (rd rs1 rs2)
+  (cond
+   ((and (eq rd rs1) (cregp rd) (cregp rs2))
+    (creg 4 0 3 rd 0 rs2))
+   (t (reg #x20 rs2 rs1 0 rd #x33))))
+
+(defun $sw (src imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (let ((base (car lst)))
+    (cond
+     ; base = sp
+     ((and (= (regno base) 2))
+      (emit '(3 4 2 5 2) 6 (bits imm 5 2) (bits imm 7 6) (regno src) 2))
+     ; base = general
+     ((and (cregp src) (cregp base))
+      (emit '(3 3 3 1 1 3 2) 6 (bits imm 5 3) (cregno base) (bits imm 2) (bits imm 6) (cregno src) 0))
+     (t (store imm src base 2)))))
+
+(defun $xor (rd rs1 rs2)
+  (cond
+   ((and (eq rd rs1) (cregp rd) (cregp rs2))
+    (creg 4 0 3 rd 1 rs2))
+   (t (reg 0 rs2 rs1 4 rd #x33))))
+
+(defun $xori (rd rs1 imm)
+  (immed imm rs1 4 rd #x13))
+

lisp/r5asmpi.lsp

@@ -0,0 +1,161 @@
+; RISC-V Assembler extensions for RP2350 - Version 1 - 18th October 2024
+; see http://www.ulisp.com/show?4Y5E
+;
+
+; Instruction formats
+
+(defun bit13 (op1 op2 rs1 op3 rd)
+  (emit32 '(7 5 5 3 5 7) op1 op2 (regno rs1) op3 (regno rd) #x13))
+
+(defun bitimm5 (op1 imm5 rs1 op2 rd)
+  (emit32 '(7 5 5 3 5 7) op1 (logand imm5 #x1f) (regno rs1) op2 (regno rd) #x13))
+
+; Additional compressed formats
+
+(defun $mul (rd rs1 rs2)
+  (cond
+   ((and (eq rd rs1) (cregp rd) (cregp rs2))
+    (emit '(3 3 3 2 3 2) 4 7 (cregno rd) 2 (cregno rs2) 1))
+   (t (muldiv rs2 rs1 0 rd #x33))))
+
+(defun $sb (src imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (cond
+   ((and (cregp src) (cregp (car lst)) (<= 0 imm 3))
+    (emit '(3 3 3 1 1 3 2) 4 2 (cregno (car lst)) (bits imm 0) (bits imm 1) (cregno src) 0))
+   (t (store imm src (car lst) 0))))
+
+(defun $sh (src imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (cond
+   ((and (cregp src) (cregp (car lst)) (or (= imm 0) (= im 2))
+    (emit '(3 3 3 1 1 3 2) 4 3 (cregno (car lst)) 0 (bits imm 1) (cregno src) 0))
+   (t (store imm src (car lst) 1)))))
+
+; Add compressed formats to $lbu, $lh, and $lhu. No $lb compressed format
+(defun $lbu (rd imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (cond
+   ((and (cregp rd) (cregp (car lst)) (<= 0 imm 3))
+    (emit '(3 3 3 1 1 3 2) 4 0 (cregno (car lst)) (bits imm 0) (bits imm 1) (cregno rd) 0))
+   (t (immed imm (car lst) 4 rd 3))))
+
+(defun $lh (rd imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (cond
+   ((and (cregp rd) (cregp (car lst)) (or (= imm 0) (= im 2))
+    (emit '(3 3 3 1 1 3 2) 4 1 (cregno (car lst)) 1 (bits imm 1) (cregno rd) 0))
+   (t (immed imm (car lst) 1 rd 3)))))
+
+(defun $lhu (rd imm &optional lst)
+  (unless lst (setq lst imm imm 0))
+  (cond
+   ((and (cregp rd) (cregp (car lst)) (or (= imm 0) (= im 2))
+    (emit '(3 3 3 1 1 3 2) 4 1 (cregno (car lst)) 0 (bits imm 1) (cregno rd) 0))
+   (t (immed imm (car lst) 5 rd 3)))))
+
+(defun $xori (rd rs1 imm)
+  (cond
+   ((and (eq rd rs1) (cregp rd) (= imm -1))
+    (emit '(3 3 3 2 3 2) 4 7 (cregno rd) 3 5 1))
+   (t (immed imm rs1 4 rd #x13))))
+
+; New instructions
+
+(defun $andn (rd rs1 rs2)
+  (reg #x20 rs2 rs1 3 rd #x33))
+
+(defun $bclr (rd rs1 rs2)
+  (reg #x24 rs2 rs1 1 rd #x33))
+
+(defun $bclri (rd rs1 imm5)
+  (bitimm5 #x24 imm5 rs1 1 rd))
+
+(defun $bext (rd rs1 rs2)
+  (reg #x24 rs2 rs1 5 rd #x33))
+
+(defun $bexti (rd rs1 imm5)
+  (bitimm5 #x24 imm5 rs1 5 rd))
+
+(defun $binv (rd rs1 rs2)
+  (reg #x34 rs2 rs1 1 rd #x33))
+
+(defun $binvi (rd rs1 imm5)
+  (bitimm5 #x34 imm5 rs1 1 rd))
+
+(defun $brev8 (rd rs1)
+  (bit13 #x34 7 rs1 5 rd))
+
+(defun $bset (rd rs1 rs2)
+  (reg #x14 rs2 rs1 1 rd #x33))
+
+(defun $bseti (rd rs1 imm5)
+  (bitimm5 #x14 imm5 rs1 1 rd))
+
+(defun $clz (rd rs1)
+  (bit13 #x30 0 rs1 1 rd))
+
+(defun $cpop (rd rs1)
+  (bit13 #x30 2 rs1 1 rd))
+
+(defun $ctz (rd rs1)
+  (bit13 #x30 1 rs1 1 rd))
+
+(defun $max (rd rs1 rs2)
+  (reg #x05 rs2 rs1 6 rd #x33))
+
+(defun $maxu (rd rs1 rs2)
+  (reg #x05 rs2 rs1 7 rd #x33))
+
+(defun $min (rd rs1 rs2)
+  (reg #x05 rs2 rs1 4 rd #x33))
+
+(defun $minu (rd rs1 rs2)
+  (reg #x05 rs2 rs1 5 rd #x33))
+
+(defun $orc.b (rd rs1)
+  (bit13 #x14 7 rs1 5 rd))
+
+(defun $orn (rd rs1 rs2)
+  (reg #x20 rs2 rs1 5 rd #x33))
+
+(defun $pack (rd rs1 rs2)
+  (reg #x04 rs2 rs1 4 rd #x33))
+
+(defun $packh (rd rs1 rs2)
+  (reg #x04 rs2 rs1 7 rd #x33))
+
+(defun $rev8 (rd rs1)
+  (bit13 #x34 #x18 rs1 5 rd))
+
+(defun $rol (rd rs1 rs2)
+  (reg #x30 rs2 rs1 1 rd #x33))
+
+(defun $ror (rd rs1 rs2)
+  (reg #x30 rs2 rs1 5 rd #x33))
+
+(defun $rori (rd rs1 imm5)
+  (bitimm5 #x30 imm5 rs1 5 rd))
+
+(defun $sext.b (rd rs1)
+  (bit13 #x30 #x04 rs1 1 rd))
+
+(defun $sext.h (rd rs1)
+  (bit13 #x30 #x05 rs1 1 rd))
+
+(defun $unzip (rd rs1)
+  (bit13 #x04 #x0f rs1 5 rd))
+
+(defun $xnor (rd rs1 rs2)
+  (reg #x20 rs2 rs1 4 rd #x33))
+
+(defun $zext.b (rd rs1)
+  ($andi rd rs1 #xff)))
+
+(defun $zext.h (rd rs1)
+  (emit32 '(7 5 5 3 5 7) #x04 0 (regno rs1) 4 (regno rd) #x33))
+
+(defun $zip (rd rs1)
+  (bit13 #x04 #x0f rs1 1 rd))
+
+