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89f9dd7065
* module/language/assembly/compile-bytecode.scm (compile-bytecode): Rewrite to fill a bytevector directly, instead of using bytevector ports. `write-bytecode' itself is still present and almost the same as before; it's just that `write-byte' et al now inline the effect of writing a byte to a binary port. * test-suite/tests/asm-to-bytecode.test (comp-test): Refactor to use public interfaces.
116 lines
4.5 KiB
Scheme
116 lines
4.5 KiB
Scheme
;;;; Assembly to bytecode compilation -*- mode: scheme; coding: utf-8; -*-
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;;;;
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 3 of the License, or (at your option) any later version.
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;;;;
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;;;; This library is distributed in the hope that it will be useful,
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;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;;; Lesser General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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(define-module (test-suite tests asm-to-bytecode)
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#:use-module (rnrs bytevectors)
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#:use-module ((rnrs io ports) #:select (open-bytevector-output-port))
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#:use-module (test-suite lib)
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#:use-module (system vm instruction)
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#:use-module (language assembly)
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#:use-module (language assembly compile-bytecode))
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(define (->u8-list sym val)
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(let ((entry (assq-ref `((uint16 2 ,bytevector-u16-native-set!)
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(uint32 4 ,bytevector-u32-native-set!))
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sym)))
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(or entry (error "unknown sym" sym))
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(let ((bv (make-bytevector (car entry))))
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((cadr entry) bv 0 val)
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(bytevector->u8-list bv))))
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(define (munge-bytecode v)
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(let lp ((i 0) (out '()))
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(if (= i (vector-length v))
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(u8-list->bytevector (reverse out))
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(let ((x (vector-ref v i)))
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(cond
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((symbol? x)
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(lp (1+ i) (cons (instruction->opcode x) out)))
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((integer? x)
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(lp (1+ i) (cons x out)))
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((pair? x)
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(lp (1+ i) (append (reverse (apply ->u8-list x)) out)))
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(else (error "bad test bytecode" x)))))))
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(define (comp-test x y)
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(let* ((y (munge-bytecode y))
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(len (bytevector-length y))
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(v #f))
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(run-test `(length ,x) #t
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(lambda ()
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(let* ((wrapped `(load-program () ,(byte-length x) #f ,x))
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(bv (compile-bytecode wrapped '())))
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(set! v (make-bytevector (- (bytevector-length bv) 8)))
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(bytevector-copy! bv 8 v 0 (bytevector-length v))
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(= (bytevector-length v) len))))
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(run-test `(compile-equal? ,x ,y) #t
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(lambda ()
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(equal? v y)))))
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(with-test-prefix "compiler"
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(with-test-prefix "asm-to-bytecode"
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(comp-test '(make-int8 3)
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#(make-int8 3))
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(comp-test '(load-number "3.14")
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(vector 'load-number 0 0 4 (char->integer #\3) (char->integer #\.)
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(char->integer #\1) (char->integer #\4)))
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(comp-test '(load-string "foo")
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(vector 'load-string 0 0 3 (char->integer #\f) (char->integer #\o)
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(char->integer #\o)))
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(comp-test '(load-symbol "foo")
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(vector 'load-symbol 0 0 3 (char->integer #\f) (char->integer #\o)
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(char->integer #\o)))
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(comp-test '(load-string "æ") ;; a non-ASCII Latin-1 string
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(vector 'load-string 0 0 1 230))
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(comp-test '(load-wide-string "λ")
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(apply vector 'load-wide-string 0 0 4
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(if (eq? (native-endianness) (endianness little))
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'(187 3 0 0)
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'(0 0 3 187))))
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(comp-test '(load-program () 3 #f (make-int8 3) (return))
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#(load-program
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(uint32 3) ;; len
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(uint32 0) ;; metalen
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make-int8 3
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return))
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;; the nops are to pad meta to an 8-byte alignment. not strictly
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;; necessary for this test, but representative of the common case.
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(comp-test '(load-program () 8
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(load-program () 3
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#f
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(make-int8 3) (return))
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(make-int8 3) (return)
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(nop) (nop) (nop) (nop) (nop))
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#(load-program
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(uint32 8) ;; len
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(uint32 11) ;; metalen
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make-int8 3
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return
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nop nop nop nop nop
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(uint32 3) ;; len
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(uint32 0) ;; metalen
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make-int8 3
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return))))
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