summaryrefslogtreecommitdiff
path: root/module/language/bytecode.scm
diff options
context:
space:
mode:
Diffstat (limited to 'module/language/bytecode.scm')
-rw-r--r--module/language/bytecode.scm130
1 files changed, 130 insertions, 0 deletions
diff --git a/module/language/bytecode.scm b/module/language/bytecode.scm
new file mode 100644
index 000000000..ec0392ba4
--- /dev/null
+++ b/module/language/bytecode.scm
@@ -0,0 +1,130 @@
+;;; Bytecode
+
+;; Copyright (C) 2013, 2017, 2018 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
+ intrinsic-name->index
+ intrinsic-index->name))
+
+(load-extension (string-append "libguile-" (effective-version))
+ "scm_init_instructions")
+(load-extension (string-append "libguile-" (effective-version))
+ "scm_init_vm_builtins")
+(load-extension (string-append "libguile-" (effective-version))
+ "scm_init_intrinsics")
+
+(define (compute-instruction-arity name args)
+ (define (first-word-arity word)
+ (case word
+ ((X32) 0)
+ ((X8_S24) 1)
+ ((X8_F24) 1)
+ ((X8_C24) 1)
+ ((X8_L24) 1)
+ ((X8_S8_I16) 2)
+ ((X8_S12_S12) 2)
+ ((X8_S12_C12) 2)
+ ((X8_S12_Z12) 2)
+ ((X8_C12_C12) 2)
+ ((X8_F12_F12) 2)
+ ((X8_S8_S8_S8) 3)
+ ((X8_S8_S8_C8) 3)
+ ((X8_S8_C8_S8) 3)))
+ (define (tail-word-arity word)
+ (case word
+ ((C32) 1)
+ ((I32) 1)
+ ((A32 AU32 AS32 AF32) 1)
+ ((B32 BF32 BS32 BU32) 0)
+ ((N32) 1)
+ ((R32) 1)
+ ((L32) 1)
+ ((LO32) 1)
+ ((C8_C24) 2)
+ ((C8_S24) 2)
+ ((C16_C16) 2)
+ ((B1_C7_L24) 3)
+ ((B1_X7_S24) 2)
+ ((B1_X7_F24) 2)
+ ((B1_X7_C24) 2)
+ ((B1_X7_L24) 2)
+ ((B1_X31) 1)
+ ((X8_S24) 1)
+ ((X8_F24) 1)
+ ((X8_C24) 1)
+ ((X8_L24) 1)))
+ (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 . 1))
+ (cached-toplevel-box . (1 . 0))
+ (cached-module-box . (1 . 0))))
+
+(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))
+
+(define *intrinsic-codes*
+ (delay (let ((tab (make-hash-table)))
+ (for-each (lambda (pair)
+ (hashv-set! tab (car pair) (cdr pair)))
+ (intrinsic-list))
+ tab)))
+
+(define *intrinsic-names*
+ (delay (let ((tab (make-hash-table)))
+ (hash-for-each (lambda (k v) (hashq-set! tab v k))
+ (force *intrinsic-codes*))
+ tab)))
+
+(define (intrinsic-name->index name)
+ (hashq-ref (force *intrinsic-codes*) name))
+
+(define (intrinsic-index->name index)
+ (hashv-ref (force *intrinsic-names*) index))