gcc

gcc

[David Rundle]

hi i need help i have a data struct that matchs some hardwear but 
gcc is alignin it this meins it is out of sync whit the hardwear 
like 
char is              2 bytes 
long double is 12 bytes 
will thats what gcc thinks 

so i need to tell gcc not to align the data struct 

may be like 

noalign struct ........ 

the main prob is whit long double st[8] 

gcc make long double 12 bytes when it need to be 10 bytes 
  

think you 
  

struct _i386_fpu_st 
{ 
  long long  significand; 
  unsigned char       exponent   ; 
  /* unsigned long       test ; */ 

} ; 

struct _i386_fpu 
{ 
  unsigned short control ; 
  unsigned short rev0    ; 
  unsigned short status  ; 
  unsigned short rev1    ; 
  unsigned short tag     ; 
  unsigned short rev2    ; 
  unsigned long  instructionPointer ; 
  unsigned short instructionSelector ; 
  unsigned short opcode  ; 
  unsigned long  operandPointer ; 
  unsigned short operandSelector ; 
  unsigned short rev3  ; 
  long double    st[8] ; 

  /* struct _i386_fpu_st st[8] ; */ 

  unsigned long rev[400] ; 

  
} ; 

extern struct _i386_fpu * i386_fpuInit(void) ;

Re: gcc

[Kurt Garloff]

[-- Attachment #1: Type: text/plain, Size: 720 bytes --]

On Wed, Sep 05, 2001 at 09:04:01AM +1200, David Rundle wrote:
> hi i need help i have a data struct that matchs some hardwear but 
> gcc is alignin it this meins it is out of sync whit the hardwear 
> like 
> char is              2 bytes 
> long double is 12 bytes 
> will thats what gcc thinks 
> 
> so i need to tell gcc not to align the data struct 
> 
> may be like 

__attribute__((packed))

Regards,
-- 
Kurt Garloff                   <kurt@garloff.de>         [Eindhoven, NL]
Physics: Plasma simulations  <K.Garloff@Phys.TUE.NL>  [TU Eindhoven, NL]
Linux: SCSI, Security          <garloff@suse.de>    [SuSE Nuernberg, DE]
 (See mail header or public key servers for PGP2 and GPG public keys.)

[-- Attachment #2: Type: application/pgp-signature, Size: 232 bytes --]

gcc

[Sridhar J (june end)]

Hello

When I compile a C program using gcc, I get an a.out file. But when I type
a.out, the error is "No such command"

How do I execute the file?

Regards
Sridhar
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Re: gcc

[Joseph Jackson]

Sridhar J (june end) wrote:

> Hello
> 
> When I compile a C program using gcc, I get an a.out file. But when I type
> a.out, the error is "No such command"
> 
> How do I execute the file?
> 
> Regards
> Sridhar
> -
> To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.linux-learn.org/faqs
> 
> 


Well what kind of file are you tring to compile? most of the time if you are 
tring to compile a single source file it will be named program.c to compile it 
do this
gcc program.c -o program
it tells gcc to compile program.c and that the output should be called program
which will be the binary version of that file. See how that works out for ya.



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Re: gcc

[Kilaru Sambaiah]

On Wednesday 26 June 2002 01:03 pm, Sridhar J (june end) wrote:
> Hello
>
> When I compile a C program using gcc, I get an a.out file. But when I type
> a.out, the error is "No such command"
>
> How do I execute the file?
>
> Regards
> Sridhar
> -

pwd is not in your path. Add it. otherwise type ./a.out
sam
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Re: gcc

[Elias Athanasopoulos]

On Wed, Jun 26, 2002 at 01:37:16PM +0530, Kilaru Sambaiah wrote:
> On Wednesday 26 June 2002 01:03 pm, Sridhar J (june end) wrote:
> > Hello
> >
> > When I compile a C program using gcc, I get an a.out file. But when I type
> > a.out, the error is "No such command"
>
> pwd is not in your path. Add it. otherwise type ./a.out
> sam

Better do the the second. Adding the current directory to PATH can
cause security problems.

Elias

-- 
http://gnewtellium.sourceforge.net			MP3 is not a crime.	
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Re: gcc

[Mark Gallagher]

Sridhar J (june end) wrote:
> Hello
> 
> When I compile a C program using gcc, I get an a.out file. But when I type
> a.out, the error is "No such command"
> 
> How do I execute the file?

When you type "a.out", Linux checks the various "path" directories (e.g. 
"/usr/bin") for a file named "a.out".  If it can't find it, then it 
tells you that, well, it can't find it - that the command doesn't exist :o).

You can get around this by typing the exact path of the program.  Say 
a.out is located in "/home/sridhar/".  You can type "~/a.out" (from 
anywhere), or change to your home directory and type "./a.out".



-- 
Mark Gallagher
http://cyberfuddle.com/infinitebabble/




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Re: gcc

[Szekely-Benczedi Endre]

./a.out maybe? To be sure you try to run it from the current
directory. I think your PATH environment varianle doesn't contains
the "." (current) directory...

Szekely-Benczedi Endre
-sysadmin
"Petru Maior" University
Targu Mures, Romania

On Wed, 26 Jun 2002, Sridhar J (june end) wrote:

> Hello
> 
> When I compile a C program using gcc, I get an a.out file. But when I type
> a.out, the error is "No such command"
> 
> How do I execute the file?
> 
> Regards
> Sridhar
> -
> To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.linux-learn.org/faqs
> 

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GCC

[Steven Liu]

Hi, All:

I want to get your help on GCC for Linux on Mips.

Here is some related information:
Host: i686
 Red Hat linux 7.0  
Binutil- 2.8.1-1. 
gcc - 1.1.2-2. 
linux kernel 2.2.12.
Malta Board.
CPU R3000.
Big Endian.

When I compiled the kernel with -mcpu=r3000 -mips1, it gave me the
following error.

mips-linux-gcc -D__KERNEL__ -DCONFIG_CPU_AURORA
-I/home/wenbo/linux/include -Wall -Wstrict-prototypes -O2
-fomit-frame-pointer -mmemcpy -fno-strict-aliasing -mno-split-addresses
-G 0 -mno-abicalls -fno-pic -mcpu=r3000 -mips1 -pipe  -c -o init/main.o
init/main.c
/home/wenbo/linux/include/asm/atomic.h: In function `atomic_add':
In file included from /home/wenbo/linux/include/linux/fs.h:22,
                 from /home/wenbo/linux/include/linux/capability.h:13,
                 from /home/wenbo/linux/include/linux/binfmts.h:5,
                 from /home/wenbo/linux/include/linux/sched.h:8,
                 from /home/wenbo/linux/include/linux/mm.h:4,
                 from /home/wenbo/linux/include/linux/slab.h:14,
                 from /home/wenbo/linux/include/linux/malloc.h:4,
                 from /home/wenbo/linux/include/linux/proc_fs.h:5,
                 from init/main.c:23:
/home/wenbo/linux/include/asm/atomic.h:47: invalid operands to binary +
/home/wenbo/linux/include/asm/atomic.h: In function `atomic_sub':
/home/wenbo/linux/include/asm/atomic.h:57: invalid operands to binary -
/home/wenbo/linux/include/asm/atomic.h: In function `atomic_add_return':
/home/wenbo/linux/include/asm/atomic.h:67: incompatible types in
assignment
/home/wenbo/linux/include/asm/atomic.h:69: incompatible types in
assignment
/home/wenbo/linux/include/asm/atomic.h: In function `atomic_sub_return':
/home/wenbo/linux/include/asm/atomic.h:81: incompatible types in
assignment
/home/wenbo/linux/include/asm/atomic.h:83: incompatible types in
assignment
/home/wenbo/linux/include/asm/timex.h: In function `get_cycles':
In file included from /home/wenbo/linux/include/linux/timex.h:138,
                 from /home/wenbo/linux/include/linux/sched.h:14,
                 from /home/wenbo/linux/include/linux/mm.h:4,
                 from /home/wenbo/linux/include/linux/slab.h:14,
                 from /home/wenbo/linux/include/linux/malloc.h:4,
                 from /home/wenbo/linux/include/linux/proc_fs.h:5,
                 from init/main.c:23:
/home/wenbo/linux/include/asm/timex.h:41: warning: implicit declaration
of function `read_32bit_cp0_register'
/home/wenbo/linux/include/asm/timex.h:41: `CP0_COUNT' undeclared (first
use in this function)
/home/wenbo/linux/include/asm/timex.h:41: (Each undeclared identifier is
reported only once
/home/wenbo/linux/include/asm/timex.h:41: for each function it appears
in.)
make: *** [init/main.o] Error 1

Nicu met the same problem but I do not know how the problem was solved.
Thank you.

Steven Liu

GCC

[Steven Liu]

Hi, All:

I want to get your help on GCC for Linux on Mips.

Here is some related information:
Host: i686
 Red Hat linux 7.0  
Binutil- 2.8.1-1. 
gcc - 1.1.2-2. 
linux kernel 2.2.12.
Malta Board.
CPU R3000.
Big Endian.

When I compiled the kernel with -mcpu=r3000 -mips1, it gave me the
following error.

mips-linux-gcc -D__KERNEL__ -DCONFIG_CPU_AURORA
-I/home/wenbo/linux/include -Wall -Wstrict-prototypes -O2
-fomit-frame-pointer -mmemcpy -fno-strict-aliasing -mno-split-addresses
-G 0 -mno-abicalls -fno-pic -mcpu=r3000 -mips1 -pipe  -c -o init/main.o
init/main.c
/home/wenbo/linux/include/asm/atomic.h: In function `atomic_add':
In file included from /home/wenbo/linux/include/linux/fs.h:22,
                 from /home/wenbo/linux/include/linux/capability.h:13,
                 from /home/wenbo/linux/include/linux/binfmts.h:5,
                 from /home/wenbo/linux/include/linux/sched.h:8,
                 from /home/wenbo/linux/include/linux/mm.h:4,
                 from /home/wenbo/linux/include/linux/slab.h:14,
                 from /home/wenbo/linux/include/linux/malloc.h:4,
                 from /home/wenbo/linux/include/linux/proc_fs.h:5,
                 from init/main.c:23:
/home/wenbo/linux/include/asm/atomic.h:47: invalid operands to binary +
/home/wenbo/linux/include/asm/atomic.h: In function `atomic_sub':
/home/wenbo/linux/include/asm/atomic.h:57: invalid operands to binary -
/home/wenbo/linux/include/asm/atomic.h: In function `atomic_add_return':
/home/wenbo/linux/include/asm/atomic.h:67: incompatible types in
assignment
/home/wenbo/linux/include/asm/atomic.h:69: incompatible types in
assignment
/home/wenbo/linux/include/asm/atomic.h: In function `atomic_sub_return':
/home/wenbo/linux/include/asm/atomic.h:81: incompatible types in
assignment
/home/wenbo/linux/include/asm/atomic.h:83: incompatible types in
assignment
/home/wenbo/linux/include/asm/timex.h: In function `get_cycles':
In file included from /home/wenbo/linux/include/linux/timex.h:138,
                 from /home/wenbo/linux/include/linux/sched.h:14,
                 from /home/wenbo/linux/include/linux/mm.h:4,
                 from /home/wenbo/linux/include/linux/slab.h:14,
                 from /home/wenbo/linux/include/linux/malloc.h:4,
                 from /home/wenbo/linux/include/linux/proc_fs.h:5,
                 from init/main.c:23:
/home/wenbo/linux/include/asm/timex.h:41: warning: implicit declaration
of function `read_32bit_cp0_register'
/home/wenbo/linux/include/asm/timex.h:41: `CP0_COUNT' undeclared (first
use in this function)
/home/wenbo/linux/include/asm/timex.h:41: (Each undeclared identifier is
reported only once
/home/wenbo/linux/include/asm/timex.h:41: for each function it appears
in.)
make: *** [init/main.o] Error 1

Nicu met the same problem but I do not know how the problem was solved.
Thank you.

Steven Liu