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• Components-of-the-environment-field

Read-x86-file-des-logic

Read File Descriptor Field

Signature

(read-x86-file-des-logic id x86) → *

Read the field entry corresponding to key id in the :FILE-DESCRIPTORS field of the environment.

Definitions and Theorems

Function: read-x86-file-des-logic

(defun read-x86-file-des-logic (id x86)
  (declare (xargs :stobjs (x86)))
  (declare (xargs :guard (integerp id)))
  (let ((__function__ 'read-x86-file-des-logic))
    (declare (ignorable __function__))
    (b* ((env (env-read x86))
         (file-des-field (assoc-equal :file-descriptors env))
         (fd-name-field (if (atom file-des-field)
                            nil
                          (assoc-equal id (cdr file-des-field))))
         (name-field (if (atom fd-name-field)
                         nil
                       (cdr fd-name-field))))
      name-field)))