test-suite/tests/asm-to-bytecode.test

   1 ;;;; test assembly to bytecode compilation -*- scheme -*-
   2 ;;;;
   3 ;;;; This library is free software; you can redistribute it and/or
   4 ;;;; modify it under the terms of the GNU Lesser General Public
   5 ;;;; License as published by the Free Software Foundation; either
   6 ;;;; version 3 of the License, or (at your option) any later version.
   7 ;;;;
   8 ;;;; This library is distributed in the hope that it will be useful,
   9 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 ;;;; Lesser General Public License for more details.
  12 ;;;;
  13 ;;;; You should have received a copy of the GNU Lesser General Public
  14 ;;;; License along with this library; if not, write to the Free Software
  15 ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  16
  17 (define-module (test-suite tests asm-to-bytecode)
  18   #:use-module (rnrs bytevector)
  19   #:use-module (test-suite lib)
  20   #:use-module (system vm instruction)
  21   #:use-module (language assembly compile-bytecode))
  22
  23 (define (->u8-list sym val)
  24   (let ((entry (assq-ref `((uint16 2 ,bytevector-u16-native-set!)
  25                            (uint32 4 ,bytevector-u32-native-set!))
  26                          sym)))
  27     (or entry (error "unknown sym" sym))
  28     (let ((bv (make-bytevector (car entry))))
  29       ((cadr entry) bv 0 val)
  30       (bytevector->u8-list bv))))
  31
  32 (define (munge-bytecode v)
  33   (let lp ((i 0) (out '()))
  34     (if (= i (vector-length v))
  35         (list->u8vector (reverse out))
  36         (let ((x (vector-ref v i)))
  37           (cond
  38            ((symbol? x)
  39             (lp (1+ i) (cons (instruction->opcode x) out)))
  40            ((integer? x)
  41             (lp (1+ i) (cons x out)))
  42            ((pair? x)
  43             (lp (1+ i) (append (reverse (apply ->u8-list x)) out)))
  44            (else (error "bad test bytecode" x)))))))
  45
  46 (define (comp-test x y)
  47   (let* ((y (munge-bytecode y))
  48          (len (u8vector-length y))
  49          (v (make-u8vector len))
  50          (i 0))
  51     (define (write-byte b) (u8vector-set! v i b) (set! i (1+ i)))
  52     (define (get-addr) i)
  53     (run-test `(length ,x) #t
  54               (lambda ()
  55                 (write-bytecode x write-byte get-addr '())
  56                 (= i len)))
  57     (run-test `(compile-equal? ,x ,y) #t
  58               (lambda ()
  59                 (equal? v y)))))
  60
  61 \f
  62 (with-test-prefix "compiler"
  63   (with-test-prefix "asm-to-bytecode"
  64
  65     (comp-test '(make-int8 3)
  66                #(make-int8 3))
  67
  68     (comp-test '(load-number "3.14")
  69                (vector 'load-number 0 0 4 (char->integer #\3) (char->integer #\.)
  70                        (char->integer #\1) (char->integer #\4)))
  71
  72     (comp-test '(load-string "foo")
  73                (vector 'load-string 0 0 3 (char->integer #\f) (char->integer #\o)
  74                        (char->integer #\o)))
  75
  76     (comp-test '(load-symbol "foo")
  77                (vector 'load-symbol 0 0 3 (char->integer #\f) (char->integer #\o)
  78                        (char->integer #\o)))
  79
  80     (comp-test '(load-program 3 2 1 () 3 #f (make-int8 3) (return))
  81                #(load-program
  82                  3 2 (uint16 1) ;; nargs, nrest, nlocs
  83                  (uint32 3)     ;; len
  84                  (uint32 0)     ;; metalen
  85                  (uint32 0)     ;; padding
  86                  make-int8 3
  87                  return))
  88
  89     ;; the nops are to pad meta to an 8-byte alignment. not strictly
  90     ;; necessary for this test, but representative of the common case.
  91     (comp-test '(load-program 3 2 1 () 8
  92                               (load-program 3 2 1 () 3
  93                                             #f
  94                                             (make-int8 3) (return))
  95                               (make-int8 3) (return)
  96                               (nop) (nop) (nop) (nop) (nop))
  97                #(load-program
  98                  3 2 (uint16 1) ;; nargs, nrest, nlocs
  99                  (uint32 8)     ;; len
 100                  (uint32 19)    ;; metalen
 101                  (uint32 0)     ;; padding
 102                  make-int8 3
 103                  return
 104                  nop nop nop nop nop
 105                  3 2 (uint16 1) ;; nargs, nrest, nlocs
 106                  (uint32 3)     ;; len
 107                  (uint32 0)     ;; metalen
 108                  (uint32 0)     ;; padding
 109                  make-int8 3
 110                  return))))