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Reflection support for unboxed f64 slots

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* module/system/vm/assembler.scm (emit-definition): Add representation
  field.
  (write-arities): Emit representations into the arities section.

* module/system/vm/debug.scm (arity-definitions): Read representations.

* module/system/vm/frame.scm (<binding>): Add representation field and
  binding-representation getter.
  (available-bindings): Pass representation to make-binding.
  (frame-binding-set!, frame-binding-ref, frame-call-representation):
  Pass representation to frame-local-ref / frame-local-set!.

* test-suite/tests/rtl.test: Update definition instructions.

* module/language/cps/slot-allocation.scm ($allocation): Add
  representations field.
  (lookup-representation): New public function.
  (allocate-slots): Pass representations to make-$allocation.

* module/language/cps/compile-bytecode.scm (compile-function): Adapt to
  emit-definition change.

* libguile/frames.h:
* libguile/frames.c (scm_frame_local_ref, scm_frame_local_set_x): Take
  representation argument.
  (scm_to_stack_item_representation): New internal helper.
This commit is contained in:
Andy Wingo 2015-10-28 17:03:42 +00:00
parent e7660a607c
commit e3cc0eeb3a
9 changed files with 149 additions and 77 deletions
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13
module/system/vm/debug.scm
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@ -1,6 +1,6 @@
;;; Guile runtime debug information
;;; Copyright (C) 2013, 2014 Free Software Foundation, Inc.
;;; Copyright (C) 2013, 2014, 2015 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
@ -381,9 +381,14 @@ section of the ELF image. Returns an ELF symbol, or @code{#f}."
(call-with-values (lambda () (read-uleb128 bv pos))
(lambda (def-offset pos)
(call-with-values (lambda () (read-uleb128 bv pos))
(lambda (slot pos)
(cons (vector name def-offset slot)
(lp pos names))))))))))
(lambda (slot+representation pos)
(let ((slot (ash slot+representation -2))
(representation (case (logand slot+representation #x3)
((0) 'scm)
((1) 'f64)
(else 'unknown))))
(cons (vector name def-offset slot representation)
(lp pos names)))))))))))
(define (load-symbols pos)
(let lp ((pos pos) (n nlocals) (out '()))
(if (zero? n)