From c169d4fd94660039be481e41d740983beaa066ae Mon Sep 17 00:00:00 2001 From: colin Date: Sat, 1 Jun 2024 10:22:45 -0700 Subject: Add: raw instrs, instrs, and ast skeletal module --- sarcasm.asd | 12 ++ src/ast.lisp | 90 ++++++++++ src/instr.lisp | 49 ++++++ src/raw-instrs.lisp | 498 ++++++++++++++++++++++++++++++++++++++++++++++++++++ src/util.lisp | 84 +++++++++ 5 files changed, 733 insertions(+) create mode 100644 sarcasm.asd create mode 100644 src/ast.lisp create mode 100644 src/instr.lisp create mode 100644 src/raw-instrs.lisp create mode 100644 src/util.lisp diff --git a/sarcasm.asd b/sarcasm.asd new file mode 100644 index 0000000..dc8b4e8 --- /dev/null +++ b/sarcasm.asd @@ -0,0 +1,12 @@ +;;;; sarcasm.asd + +(asdf:defsystem #:sarcasm + :description "WASM runtime in Common Lisp" + :author "Colin " + :license "GPL3" + :version "0.0.1" + :depends-on (#:alexandria #:yacc) + :pathname "src/" + :serial t + :components ((:file "util") + (:file "ast"))) diff --git a/src/ast.lisp b/src/ast.lisp new file mode 100644 index 0000000..eef5c05 --- /dev/null +++ b/src/ast.lisp @@ -0,0 +1,90 @@ +(defpackage #:sarcasm.ast + (:use #:cl) + (:import-from #:sarcasm.util #:def/class) + (:local-nicknames + (#:a #:alexandria-2) + (#:util #:sarcasm.util))) + +(in-package #:sarcasm.ast) + +;;; TYPES + + + +(deftype i32 () + '(integer 0 #.(expt 2 32))) + +(deftype i64 () + '(integer 0 #. (expt 2 64))) + +(deftype f32 () + 'single-float) + +(deftype f64 () + 'double-float) + +(deftype numtype () + '(or i32 i64 f32 f64)) + +(deftype typeidx () + 'i32) + +(deftype vectype () + '(bit-vector 128)) + +(deftype funcref () + 't) + +(deftype externref () + 't) + +(deftype reftype () + '(or funcref externref)) + +(deftype valtype () + '(or numtype vectype reftype)) + +(defun stack-effect-type-p (thing) + "A stack effect type is a two element list of lists of keywords. + +It describes the types of values consumed off the stack and returned +to the stack by instructions." + (and (listp thing) + (= 2 (length thing)) + (listp (first thing)) + (listp (second thing)) + (every #'keywordp (first thing)) + (every #'keywordp (second thing)))) + +(deftype stack-effect-type () + "This is not part of the standard grammar, but appears implicitly in +the WASM table of instructions found + + https://webassembly.github.io/spec/core/appendix/index-instructions.html + +In the `Type` column." + '(satisfies stack-effect-type-p)) + +;;; MODULE-STRUCTURES + +(def/class instr () + ((name :prefix :type keyword) + (code :prefix :type (vector byte)) + (type :prefix :type stack-effect-type))) + +(def/class numeric-instr (instr)) + +(def/class func () + (type :prefix :type typeidx) + (locals :type (vector valtype)) + (body :prefix :type expr)) + +;;; MODULES + +(def/class module () + (types funcs tables mems globals elems datas imports exports + :type vector :initform (vector)) + (start :type (or null t) ; TODO: what is this value type? + :initform nil)) + + diff --git a/src/instr.lisp b/src/instr.lisp new file mode 100644 index 0000000..a5c94c6 --- /dev/null +++ b/src/instr.lisp @@ -0,0 +1,49 @@ +(defpackage #:sarcasm.instr + (:use #:cl) + (:shadow cl:return cl:if cl:block cl:loop cl:t) + (:local-nicknames + (#:a #:alexandria-2))) + +(in-package #:sarcasm.instr) + +(defclass instr () ()) + +(eval-when (:compile-toplevel :load-toplevel :execute) + (defun expand-instr-plist (plist) + (destructuring-bind (&key instr code type) plist + (let* ((class-name + (intern (string-upcase (first instr)))) + (immediates + (cl:loop + :for arg :in (rest instr) + :for slot-name := (intern (string-upcase arg)) + :for reader := (intern (format nil "~a-~a" class-name slot-name)) + :for initarg := (a:make-keyword slot-name) + :collect `(,slot-name + :reader ,reader + :initarg ,initarg + :initform (error "~a required" ',slot-name))))) + `(defclass ,class-name (instr) + ((instr-name + :allocation :class + :type string + :initform ,(first instr) + :reader instr-name) + (instr-code + :allocation :class + :type (vector (unsigned-byte 8) ,(length code)) + :initform (make-array ,(length code) + :element-type '(unsigned-byte 8) + :initial-contents ',code)) + (instr-type + :allocation :class + :type t + :initform ',type) + ,@immediates)))))) + +(macrolet ((create-instr-classes (raw) + `(progn + ,@(mapcar #'expand-instr-plist raw)))) + (create-instr-classes #.sarcasm.raw-instrs:raw-instrs)) + + diff --git a/src/raw-instrs.lisp b/src/raw-instrs.lisp new file mode 100644 index 0000000..bdbde12 --- /dev/null +++ b/src/raw-instrs.lisp @@ -0,0 +1,498 @@ +(defpackage #:sarcasm.raw-instrs + (:use :cl) + (:export #:raw-instrs)) + +(in-package #:sarcasm.raw-instrs) +(defparameter raw-instrs + '((:INSTR ("unreachable") :CODE (0) :TYPE ((:|t1*|) (:|t2*|))) + (:INSTR ("nop") :CODE (1) :TYPE (NIL NIL)) + (:INSTR ("block" "Xbt") :CODE (2) :TYPE ((:|t1*|) (:|t2*|))) + (:INSTR ("loop" "Xbt") :CODE (3) :TYPE ((:|t1*|) (:|t2*|))) + (:INSTR ("if" "Xbt") :CODE (4) :TYPE ((:|t1*| :I32) (:|t2*|))) + (:INSTR ("else") :CODE NIL :TYPE NIL) (:INSTR ("end") :CODE NIL :TYPE NIL) + (:INSTR ("br" "l") :CODE (12) :TYPE ((:|t1*| :|t*|) (:|t2*|))) + (:INSTR ("brif" "l") :CODE (13) :TYPE ((:|t*| :I32) (:|t*|))) + (:INSTR ("brtable" "l^*" "l") :CODE (14) :TYPE ((:|t1*| :|t*| :I32) (:|t2*|))) + (:INSTR ("return") :CODE (15) :TYPE ((:|t1*| :|t*|) (:|t2*|))) + (:INSTR ("call" "x") :CODE (16) :TYPE ((:|t1*|) (:|t2*|))) + (:INSTR ("callindirect" "x" "y") :CODE (17) :TYPE ((:|t1*| :I32) (:|t2*|))) + (:INSTR ("drop") :CODE (26) :TYPE ((:|t|) NIL)) + (:INSTR ("select") :CODE (27) :TYPE ((:|t| :|t| :I32) (:|t|))) + (:INSTR ("select" "t") :CODE (28) :TYPE ((:|t| :|t| :I32) (:|t|))) + (:INSTR ("local.get" "x") :CODE (32) :TYPE (NIL (:|t|))) + (:INSTR ("local.set" "x") :CODE (33) :TYPE ((:|t|) NIL)) + (:INSTR ("local.tee" "x") :CODE (34) :TYPE ((:|t|) (:|t|))) + (:INSTR ("global.get" "x") :CODE (35) :TYPE (NIL (:|t|))) + (:INSTR ("global.set" "x") :CODE (36) :TYPE ((:|t|) NIL)) + (:INSTR ("table.get" "x") :CODE (37) :TYPE ((:I32) (:|t|))) + (:INSTR ("table.set" "x") :CODE (38) :TYPE ((:I32 :|t|) NIL)) + (:INSTR ("i32.load" "memarg") :CODE (40) :TYPE ((:I32) (:I32))) + (:INSTR ("i64.load" "memarg") :CODE (41) :TYPE ((:I32) (:I64))) + (:INSTR ("f32.load" "memarg") :CODE (42) :TYPE ((:I32) (:F32))) + (:INSTR ("f64.load" "memarg") :CODE (43) :TYPE ((:I32) (:F64))) + (:INSTR ("i32.load8_s" "memarg") 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("i32x4.vtrunc_sat_f64x2_u_zero") :CODE (253 253 1) :TYPE + ((:V128) (:V128))) + (:INSTR ("f64x2.vconvert_low_i32x4_s") :CODE (253 254 1) :TYPE + ((:V128) (:V128))) + (:INSTR ("f64x2.vconvert_low_i32x4_u") :CODE (253 255 1) :TYPE + ((:V128) (:V128))))) diff --git a/src/util.lisp b/src/util.lisp new file mode 100644 index 0000000..5899b36 --- /dev/null +++ b/src/util.lisp @@ -0,0 +1,84 @@ +(defpackage #:sarcasm.util + (:use #:cl) + (:export + #:take-until + #:def/class)) + +(in-package #:sarcasm.util) + +(defun take-until (pred list) + "Returns two values: FRONT BACK. + +FRONT contains the first N members X of LIST for which (PRED X) is NIL. +BACK contains everything after the members of FRONT. + +(EQUALP LIST + (MULTIPLE-VALUE-BIND (FRONT BACK) (TAKE-UNTIL PRED LIST) + (APPEND FRONT BACK)) + +Is always T." + (loop :for (x . back) :on list + :for fx? := (funcall pred x) + :until fx? + :collect x :into front + :finally (return (values front (if fx? (cons x back) nil))))) + +(defun partition (pred list) + "Returns two list values: YES NO. + +YES is everything for which PRED is T, NO is everything else." + (loop :for e :in list + :when (funcall pred e) + :collect e :into yes + :else + :collect e :into no + :finally (return (values yes no)))) + +(defmacro def/class (name (&rest supers) &body slots-and-options) + "Define a class. + +SLOTS-AND-OPTIONS := (SLOT-SPEC1 ... SLOT-SPECN . CLASS-OPTIONS) + +Each SLOT-SPEC is a list of slot names followed by keyword slot +options, E.g: + +(X Y Z :type integer :initarg 0) + +Would expand into three slot definitions +(X :accessor X :initarg :X :type integer :initarg 0) +(Y :accessor Y :initarg :Y :type integer :initarg 0) +(Z :accessor Z :initarg :Z :type integer :initarg 0) + +CLASS-OPTIONS is a PLIST of class options." + (labels + ((make-accessor-name (slot &optional prefix?) + (if prefix? + (intern (format nil "~a-~a" name slot)) + slot)) + (singlep (x) + (find x '(:prefix) :test #'eq)) + (parse-slot-spec-expr (expr) + " (names ... &key kwargs)" + (multiple-value-bind (slot-names kwargs) (take-until #'keywordp expr) + (multiple-value-bind (kwargs singles) (partition #'singlep kwargs) + (loop + :with prefix-accessor? := (find ':prefix singles :test #'eq) + :for slot :in slot-names + :collect `(,slot + :accessor ,(make-accessor-name slot prefix-accessor?) + :initarg ,(alexandria:make-keyword slot) + ,@kwargs))))) + + (parse-class-options (kwargs) + (loop :for (key val . more) :on kwargs :by #'cddr + :collect (list key val)))) + + (let* ((slot-defs (loop :for expr :in slots-and-options + :while (listp expr) + :append (parse-slot-spec-expr expr))) + (options (parse-class-options + (nth-value 1 (take-until #'keywordp slots-and-options))))) + + `(defclass ,name ,supers + (,@slot-defs) + ,@options)))) -- cgit v1.2.3