RE: Need help with GNU assembly

2007-06-18 Thread Ted Mittelstaedt 

http://asm.sourceforge.net/intro.html



 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] Behalf Of Patil, Kiran
 Sent: Thursday, June 14, 2007 2:11 PM
 To: freebsd-questions@freebsd.org
 Cc: Patil, Kiran
 Subject: Need help with GNU assembly
 
 
 Hi All,
 
  
 
 I am trying to use GNU assembly. I am trying simple thing such as ,
 moving content of memory location into general purpose register (ax).
 
  
 
 I have following code :
 
  
 
 struct context {
 
  
 
 unsigned long mask[8];
 
 } CONTEXT;
 
  
 
 int main()
 
 {
 
 CONTEXT sr;
 
 sr.mask[5] = 0x8FED;
 
  
 
 __asm ( movw %0, %ax : : m (*(unsigned
 short*)sr.mask[5]) );
 
 return 0;
 
 }
 
  
 
 Compiler complains with error bad substitution directive in asm
 instruction.
 
  
 
 I tried changing the code something like this :
 
  
 
 __asm ( movw %0, %ax : : m (*(unsigned short*)sr.mask+5) );
 
  
 
 Still error is same, then I tried following:
 
  
 
 Unsigned short* ptemp = sr.mask[5];
 
 __asm ( movw %0, %ax : : m (*(unsigned short*)ptemp) );
 
 But still no luck, compiler reported same error as mentioned above
 
  
 
 Any help is appreciated. Please let me know where I am mistake.
 
  
 
 Thanks,
 
 -- Kiran P.
 
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RE: Need help with GNU assembly

2007-06-17 Thread Ted Mittelstaedt 

http://user.nj.net/~tms/hello.html

 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] Behalf Of Patil, Kiran
 Sent: Thursday, June 14, 2007 2:11 PM
 To: freebsd-questions@freebsd.org
 Cc: Patil, Kiran
 Subject: Need help with GNU assembly
 
 
 Hi All,
 
  
 
 I am trying to use GNU assembly. I am trying simple thing such as ,
 moving content of memory location into general purpose register (ax).
 
  
 
 I have following code :
 
  
 
 struct context {
 
  
 
 unsigned long mask[8];
 
 } CONTEXT;
 
  
 
 int main()
 
 {
 
 CONTEXT sr;
 
 sr.mask[5] = 0x8FED;
 
  
 
 __asm ( movw %0, %ax : : m (*(unsigned
 short*)sr.mask[5]) );
 
 return 0;
 
 }
 
  
 
 Compiler complains with error bad substitution directive in asm
 instruction.
 
  
 
 I tried changing the code something like this :
 
  
 
 __asm ( movw %0, %ax : : m (*(unsigned short*)sr.mask+5) );
 
  
 
 Still error is same, then I tried following:
 
  
 
 Unsigned short* ptemp = sr.mask[5];
 
 __asm ( movw %0, %ax : : m (*(unsigned short*)ptemp) );
 
 But still no luck, compiler reported same error as mentioned above
 
  
 
 Any help is appreciated. Please let me know where I am mistake.
 
  
 
 Thanks,
 
 -- Kiran P.
 
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