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;;; GNU Mes --- Maxwell Equations of Software
;;; Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;;
;;; This file is part of GNU Mes.
;;;
;;; GNU Mes is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Mes is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
(define-module (mescc as)
#:use-module (srfi srfi-1)
#:use-module (mes guile)
#:use-module (mescc bytevectors)
#:use-module (mescc info)
#:export (as
dec->hex
int->bv8
int->bv16
int->bv32
int->bv64
get-r
get-r0
get-r1
get-r-1))
(define (int->bv64 value)
(let ((bv (make-bytevector 8)))
(bytevector-u64-native-set! bv 0 value)
bv))
(define (int->bv32 value)
(let ((bv (make-bytevector 4)))
(bytevector-u32-native-set! bv 0 value)
bv))
(define (int->bv16 value)
(let ((bv (make-bytevector 2)))
(bytevector-u16-native-set! bv 0 value)
bv))
(define (int->bv8 value)
(let ((bv (make-bytevector 1)))
(bytevector-u8-set! bv 0 value)
bv))
(define (dec->hex o)
(cond ((number? o) (number->string o 16))
((char? o) (number->string (char->integer o) 16))
(else (format #f "~s" o))))
(define (as info instruction . rest)
(if (pair? instruction)
(append-map (lambda (o) (apply as (cons* info o rest))) instruction)
(let ((proc (assoc-ref (.instructions info) instruction)))
(if (not proc) (error "no such instruction" instruction)
(apply proc info rest)))))
(define (get-r info)
(car (if (pair? (.allocated info)) (.allocated info) (.registers info))))
(define (get-r0 info)
(cadr (.allocated info)))
(define (get-r1 info)
(car (.allocated info)))
(define (get-r-1 info)
(caddr (.allocated info)))
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