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From: sjw <simon.j.wright@mac.com>
Newsgroups: comp.lang.ada
Subject: Re: Code Statement
Date: Tue, 18 May 2010 08:05:41 -0700 (PDT)
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Date: 2010-05-18T08:05:41-07:00
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On May 18, 2:12=A0pm, johnj...@cox.net wrote:
> Trying to use the "Code Statement" for a special project, by passing the
> ASM proc/func. So, can Gnat process a true "Code Statement" statement?
>
> When I compile the following example using>gnat make temp.adb -gnatpg
>
> gcc -c -gnatpg temp.adb
> temp.adb:10:07: incorrect type for code statement
> gnatmake: "temp.adb" compilation error
>
> Source code:
>
> =A0 =A0package Machine_Code is
>
> =A0 =A0 =A0 =A0type Asm_Insn is new Integer; =A0-- =A0type required by ga=
nt
>
> =A0 =A0 =A0 =A0x86_NOP =A0 =A0: constant Asm_Insn :=3D 16#90#;
>
> =A0 =A0 =A0 =A0type M_Code_0 =A0is record
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Opcode : Asm_Insn;
> =A0 =A0 =A0 =A0end record;
> =A0 =A0 =A0 =A0pragma Pack (M_Code_0);
> =A0 =A0end Machine_Code;
>
> Source code:
>
> =A0 =A0with Machine_Code;
>
> =A0 =A0procedure temp is
>
> =A0 =A0 =A0 =A0procedure Test;
>
> =A0 =A0 =A0 =A0procedure Test is
> =A0 =A0 =A0 =A0 =A0 use Machine_Code;
> =A0 =A0 =A0 =A0begin
> =A0 =A0 =A0 =A0 =A0 M_Code_0'(Opcode =3D> x86_NOP); =A0-- line 10
> =A0 =A0 =A0 =A0end Test;
>
> =A0 =A0begin
> =A0 =A0 =A0 null;
> =A0 =A0end temp;

See
http://booch95.svn.sourceforge.net/viewvc/booch95/trunk/src/bc-support-high=
_resolution_time-clock.adb-pentium?revision=3D1415&view=3Dmarkup
for a working i586/x86_64 example.

Best not to use -gnatpg: -gnatp says 'suppress all checks', -gnatg
says 'GNAT implementation mode (used for compiling GNAT units)' -- I'm
pretty sure that that mode is like -Werror.