Re: x64 assembler & RIP for call/jmp absolute indirect

From	mhx@iae.nl (Marcel Hendrix)
Subject	Re: x64 assembler & RIP for call/jmp absolute indirect
Newsgroups	comp.lang.forth
Message-ID	<92561592968435@frunobulax.edu> (permalink)
Date	2012-07-11 20:47 +0200
References	<5aec6524-87a3-49ba-89bc-cca28a61d453@fr28g2000vbb.googlegroups.com>
Organization	Wanadoo

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Alex McDonald <blog@nospicedham.rivadpm.com> writes Re: x64 assembler & RIP for call/jmp absolute indirect

> While constructing a Forth assembler for x64 mode, I've added RIP
> addressing support, and come across a slight oddball encoding during
> testing the encodings. I've not yet been able to test this under an
> x64 system (that's what the assembler is for...) so I'm looking for
> anyone that can shed some light on the possible consequences of this.

For what it is worth:

FORTH> code x  
	$4111C q# -> rax mov, 
	[rax]            call,  
	$4111C offset    call, 
	[_ $4111C +]     call,  
	ret,  
       end-code
FORTH> see x
Flags: ANSI
$012A96C0  pop           rbx                       5B                        [
$012A96C1  mov           rax, $0004111C d#         48C7C01C110400            HG@....
$012A96C8  call          [rax] qword               FF10                      ..
$012A96CA  call          $0004111C offset NEAR     E84D7AD9FE                hMzY~
$012A96CF  call          $0004111C qword-offset    FF15477AD9FE              ..GzY~
$012A96D5  ret           NEAR                      C3                        C

I have no way to encode your

> ( $6 )    call    qword { $4111C }                  \ FF14254C114000

-marcel

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Thread

x64 assembler & RIP for call/jmp absolute indirect Alex McDonald <blog@nospicedham.rivadpm.com> - 2012-07-11 09:25 -0700
  Re: x64 assembler & RIP for call/jmp absolute indirect Alex McDonald <blog@nospicedham.rivadpm.com> - 2012-07-11 10:32 -0700
  Re: x64 assembler & RIP for call/jmp absolute indirect mhx@iae.nl (Marcel Hendrix) - 2012-07-11 20:47 +0200
    Re: x64 assembler & RIP for call/jmp absolute indirect Alex McDonald <blog@rivadpm.com> - 2012-07-11 12:31 -0700
  Re: x64 assembler & RIP for call/jmp absolute indirect "Rod Pemberton" <do_not_have@notemailnot.cmm> - 2012-07-13 03:35 -0400
    Re: x64 assembler & RIP for call/jmp absolute indirect "Rod Pemberton" <do_not_have@notemailnot.cmm> - 2012-07-13 03:44 -0400
      Re: x64 assembler & RIP for call/jmp absolute indirect Alex McDonald <blog@rivadpm.com> - 2012-07-13 03:34 -0700

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