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Diffstat (limited to 'module/language/bytecode.scm')
-rw-r--r-- | module/language/bytecode.scm | 130 |
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)) |