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    • Nop-cosim

    Check-nop-output

    Signature
    (check-nop-output halt-address x86) → *
    Arguments
    x86 — Output x86 State.

    Definitions and Theorems

    Function: check-nop-output

    (defun check-nop-output (halt-address x86)
     (declare (xargs :stobjs (x86)))
     (declare (type (signed-byte 48) halt-address))
     (let ((__function__ 'check-nop-output))
      (declare (ignorable __function__))
      (cond
       ((or
          (fault x86)
          (not (equal (ms x86)
                      (cons (cons 'x86-fetch-decode-execute-halt
                                  (cons ':rip (cons halt-address 'nil)))
                            'nil))))
        (cw "~|(ms x86) = ~x0 (fault x86) = ~x1~%"
            (ms x86)
            (fault x86)))
       (t (if (and (equal (rgfi *rax* x86) 0)
                   (equal (rgfi *rbx* x86) 0)
                   (equal (rgfi *rcx* x86) 0)
                   (equal (rgfi *rdx* x86) 0)
                   (equal (rgfi *rsi* x86) 0)
                   (equal (rgfi *rdi* x86) 0)
                   (equal (rgfi *rsp* x86) 0)
                   (equal (rgfi *r8* x86) 0)
                   (equal (rgfi *r9* x86) 0)
                   (equal (rgfi *r10* x86) 0)
                   (equal (rgfi *r11* x86) 0)
                   (equal (rgfi *r12* x86) 0)
                   (equal (rgfi *r13* x86) 0)
                   (equal (rgfi *r14* x86) 0)
                   (equal (rgfi *r15* x86) 0)
                   (equal (rflags x86) 2))
              (prog2$ (cw "~|NOP sequences behave as expected.~%")
                      t)
            (cw "~|NOP sequences DO NOT behave as expected!~%"))))))