| Topic: |
DEVELOP > c-Plus-Plus |
| User: |
"Cristian Tota" |
| Date: |
22 Nov 2003 04:31:46 PM |
| Object: |
inline asm portability |
I am programming Visual C++ 6.0, using inline asm. MSDN says that code with
inline asm is not fully portable to other hardware platforms. What does this
reffer to? On what platforms isn't the code portable?
Cristian
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| User: "lilburne" |
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| Title: Re: inline asm portability |
22 Nov 2003 04:41:58 PM |
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Cristian Tota wrote:
I am programming Visual C++ 6.0, using inline asm. MSDN says that code with
inline asm is not fully portable to other hardware platforms. What does this
reffer to? On what platforms isn't the code portable?
Any platform that does not use the processor for which your
ASM is written for (MIPS, Motorola, SPARC, ..., etc) and
probably also any platform that is not windows too.
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| User: "Moonlit" |
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| Title: Re: inline asm portability |
22 Nov 2003 06:09:58 PM |
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Hi,
"Cristian Tota" <cristian.tota@vion-software.ro> wrote in message
news:bpok6j$5jm$1@ally.taide.net...
I am programming Visual C++ 6.0, using inline asm. MSDN says that code
with
inline asm is not fully portable to other hardware platforms. What does
this
reffer to? On what platforms isn't the code portable?
Any Processor that is not x86 and in addition to that, if you use assembly
instructions for newer processors it won't run on older ones and in addtion
to that using 32 bit segment code is likely not compatible with 16 bit
segment code.
Cristian
Regards, Ron AF Greve.
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| User: "Jack Klein" |
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| Title: Re: inline asm portability |
22 Nov 2003 10:51:55 PM |
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On Sun, 23 Nov 2003 00:31:46 +0200, "Cristian Tota"
<cristian.tota@vion-software.ro> wrote in comp.lang.c++:
I am programming Visual C++ 6.0, using inline asm. MSDN says that code with
inline asm is not fully portable to other hardware platforms. What does this
reffer to? On what platforms isn't the code portable?
Cristian
Not just hardware platforms, other compilers for the same target.
Microsoft's implementation of inline assembly language is not
conforming to the C++ language standard at all. And it won't work
with compilers from Borland, GNU, or Microtec, just to name a few,
that target the same 32-bit x86 processors.
So what MSDN should say is that all Visual C++ code with inline
assembly language is completely non-portable and locked into Visual
C++ forever, unless you are willing to translate it.
--
Jack Klein
Home: http://JK-Technology.Com
FAQs for
comp.lang.c http://www.eskimo.com/~scs/C-faq/top.html
comp.lang.c++ http://www.parashift.com/c++-faq-lite/
alt.comp.lang.learn.c-c++ ftp://snurse-l.org/pub/acllc-c++/faq
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| User: "Pete Becker" |
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| Title: Re: inline asm portability |
23 Nov 2003 07:52:00 AM |
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Jack Klein wrote:
So what MSDN should say is that all Visual C++ code with inline
assembly language is completely non-portable and locked into Visual
C++ forever, unless you are willing to translate it.
As should every other implementation. They all vary on register usage,
stack frame layout, assembler syntax, access to named variables, etc.
--
Pete Becker
Dinkumware, Ltd. (http://www.dinkumware.com)
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