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Assembler residualizes local variable definition locations

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* module/system/vm/assembler.scm (write-arities): Serialize definition
  locations after names.
  (definition): Store definition as a byte offset.
This commit is contained in:
Andy Wingo 2014-04-15 20:25:16 +02:00
parent 1a82c2012b
commit 67ddb7e264
1 changed files with 13 additions and 2 deletions
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15
module/system/vm/assembler.scm
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@ -829,7 +829,9 @@ returned instead."
(define-macro-assembler (definition asm name slot)
(let* ((arity (car (meta-arities (car (asm-meta asm)))))
(def (vector name slot (- (asm-start asm) (arity-low-pc arity)))))
(def (vector name
slot
(* (- (asm-start asm) (arity-low-pc arity)) 4))))
(set-arity-definitions! arity (cons def (arity-definitions arity)))))
(define-macro-assembler (cache-current-module! asm module scope)
@ -1510,6 +1512,7 @@ procedure with label @var{rw-init}. @var{rw-init} may be false. If
(length (arity-opt arity))
(length (arity-definitions arity)))
(let ((relocs (write-kw-indices (arity-kw-indices arity) relocs)))
;; Write local names.
(let lp ((definitions (arity-definitions arity)))
(match definitions
(() relocs)
@ -1518,7 +1521,15 @@ procedure with label @var{rw-init}. @var{rw-init} may be false. If
(string-table-intern! strtab (symbol->string name))
0)))
(put-uleb128 names-port sym)
(lp definitions)))))))
(lp definitions)))))
;; Now write their definitions.
(let lp ((definitions (arity-definitions arity)))
(match definitions
(() relocs)
((#(name slot def) . definitions)
(put-uleb128 names-port def)
(put-uleb128 names-port slot)
(lp definitions))))))
(let lp ((metas metas) (pos arities-prefix-len) (relocs '()))
(match metas
(()