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From: Sergey Reva <rs_rlab@mail.ru>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: [9fans] return vlong
Date: Fri, 20 May 2005 17:53:10 +0300	[thread overview]
Message-ID: <5114550406.20050520175310@mail.ru> (raw)

Hello Fans,

Where I can get information about Plan 9 C call conversion.
Especially, how return uvlong value?

TEXT rdtsc(SB),0,$0
        BYTE $0x0F
        BYTE $0x31

        MOVL .ret+0(FP),BX
        MOVL AX,(BX)
        MOVL DX,4(BX)
        RET

I borrow last 3 lines (not including RET) from C compiler
output (-S flag), and seems it work (CPU freq calculation)
but I not understand what is '.ret', where it's placed.

Sergey
-- 
http://rs-rlab.narod.ru                          mailto:rs_rlab@mail.ru



             reply	other threads:[~2005-05-20 14:53 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-05-20 14:53 Sergey Reva [this message]
2005-05-20 15:00 ` Russ Cox
2005-05-20 15:07   ` jmk
2005-05-20 15:15 ` C H Forsyth

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