Article View: gnu.gcc.help
Article #42294Urgent help needed.....
From: Varadarajan
Date: Thu, 21 Dec 1995 00:00
Date: Thu, 21 Dec 1995 00:00
37 lines
2008 bytes
2008 bytes
Hello all,
I would like to know as to how I could access the C variables from
assembly language constructs using gcc. I did go through the info
pages, but I was never able to follow them. (Yes, I did make a honest
effort). I am running gcc 2.7.2 on a sun sparc system (4.1.3). I am
not able to get even the sethi instruction compile.
I have tried the following variants.
asm("sethi %%hi(%0), %%i7", :: "m" (foo.bar));
asm("sethi %%hi(%0), %%i7", :: "n" (foo.bar));
asm("sethi %%hi(%0), %%i7", :: "i" (foo.bar));
asm("sethi %%hi(%0), %%i7", :: "V" (foo.bar));
asm("sethi %%hi(%0), %%i7", :: "o" (foo.bar));
asm("sethi %%hi(%0), %%i7", :: "r" (foo.bar)); // I know this does not
// make any sense, but I did try it any way.
asm("sethi %%hi(%0), %%i7", :: "s" (foo.bar));
asm("sethi %%hi(%0), %%i7", :: "X" (foo.bar));
(Yes I need to modify the i7 register.. It is not a typo)
where foo is a structure and bar an element of that structure. I
request one of the gcc gurus to help me. I am in desperate situation
as I need this information for my course project. Thanks a lot in
advance.
Wishing you all happy holidays.
Best regards,
Varadarajan .T.S.
--
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| Varadarajan.T.S. | It's not an optical illusion, it just |
| M.S. Comp Science | looks like one. |
| tsv@cs.umanitoba.ca | #include "std_disclaimer.h" |
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 11318c,3425fe044e4f2ce4 X-Google-Attributes: gid11318c,public From: tsv@cs.umanitoba.CA (Varadarajan) Subject: Urgent help needed..... Date: 1995/12/21 Message-ID: <9512212000.AA03604@nickel.cs.umanitoba.ca> X-Deja-AN: 122498340 distribution: gnu sender: daemon@cis.ohio-state.edu organization: GNUs Not Usenet reply-to: tsv@cs.umanitoba.ca newsgroups: gnu.gcc.help