blob: 2ef98675a269e7fb6b574458db262667c73462e6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
;;; Bytecode
;; Copyright (C) 2013 Free Software Foundation, Inc.
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library 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
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;;; Code:
(define-module (language bytecode)
#:use-module (ice-9 match)
#:use-module ((srfi srfi-1) #:select (fold))
#:export (instruction-list
instruction-arity
builtin-name->index
builtin-index->name))
(load-extension (string-append "libguile-" (effective-version))
"scm_init_instructions")
(load-extension (string-append "libguile-" (effective-version))
"scm_init_vm_builtins")
(define (compute-instruction-arity name args)
(define (first-word-arity word)
(case word
((U8_X24) 0)
((U8_U24) 1)
((U8_L24) 1)
((U8_U8_I16) 2)
((U8_U12_U12) 2)
((U8_U8_U8_U8) 3)))
(define (tail-word-arity word)
(case word
((U8_U24) 2)
((U8_L24) 2)
((U8_U8_I16) 3)
((U8_U12_U12) 3)
((U8_U8_U8_U8) 4)
((U32) 1)
((I32) 1)
((A32) 1)
((B32) 0)
((N32) 1)
((S32) 1)
((L32) 1)
((LO32) 1)
((X8_U24) 1)
((X8_U12_U12) 2)
((X8_L24) 1)
((B1_X7_L24) 2)
((B1_U7_L24) 3)
((B1_X31) 1)
((B1_X7_U24) 2)))
(match args
((arg0 . args)
(fold (lambda (arg arity)
(+ (tail-word-arity arg) arity))
(first-word-arity arg0)
args))))
(define *macro-instruction-arities*
'((cache-current-module! . (0 . 2))
(cached-toplevel-box . (1 . 3))
(cached-module-box . (1 . 4))))
(define (compute-instruction-arities)
(let ((table (make-hash-table)))
(for-each
(match-lambda
;; Put special cases here.
((name op '! . args)
(hashq-set! table name
(cons 0 (compute-instruction-arity name args))))
((name op '<- . args)
(hashq-set! table name
(cons 1 (1- (compute-instruction-arity name args))))))
(instruction-list))
(for-each (match-lambda
((name . arity)
(hashq-set! table name arity)))
*macro-instruction-arities*)
table))
(define *instruction-arities* (delay (compute-instruction-arities)))
(define (instruction-arity name)
(hashq-ref (force *instruction-arities*) name))
|
