RE: RE: [arm-gnu] Assembler error for Inline Assembly (cortex-A8 processor)

["Shilimkar, Santosh" <santosh.shilimkar@xxxxxx>]

Did it help ?
 
 
>>>> I have tried instructions like 'vadd,vmov,vzip,vqmovn' using NEON registers without 
>>>> any problems in inline assembly. 


		 

		Can you attach a code snippet containing these instructions? maybe there's a problem with the syntax i've used... 

		 

		Infact I tried your instruction and it also compiled for me. I used the compile option  '-march=armv7a -mfpu=neon -mfloat-abi=softfp'

		I don't see any issue with your syntax. Just for ur reference, here is the example.

		void func( )

		{

		 __asm__ __volatile__(

		"        vadd.s32      d0, d0\n"

		"        vld1.32       d0[], [r7]!\n"

		"        vadd.s32      d0, d0\n"
		"        vzip.s32      d8, d8\n");

		}
		 

		 

		 - Santosh 



		------- Original Message -------
		Sender : Shilimkar, Santosh<santosh.shilimkar@xxxxxx>
		Date : Nov 21, 2008 10:22 (GMT+05:00)
		Title : RE: [arm-gnu] Assembler error for Inline Assembly (cortex-A8 processor)
		
		
		
		> -----Original Message----- 
		> From: Akshay Joshi [mailto:akshay.joshi@xxxxxxxxxxx]  
		> Sent: Friday, November 21, 2008 9:39 AM 
		> To: Laurent Desnogues 
		> Cc: arm-gnu@xxxxxxxxxxxxxxxx 
		> Subject: RE: [arm-gnu] Assembler error for Inline Assembly  
		> (cortex-A8 processor) 
		>  
		> >>>> Try adding -mfloat-abi=softfp. 
		>  
		> >>>>> Laurent 
		>  
		> tried this option but with no luck. 
		>  
		>  
		> >>>>Can you try adding this option as well. '-march=armv7a' 
		>  
		> >>>>-Santosh 
		>  
		> added -march=armv7-a too. no luck here either... 
		>  
		> Has anyone tried using NEON regs in inline assembly w/o  
		> facing any problems? 
		> I'm using the latest toolchain (2008q3)... 
		
		I have tried instructions like 'vadd,vmov,vzip,vqmovn' using NEON registers without 
		any problems in inline assembly. 
		
		
		  
		>  
		>  
		> -----Original Message----- 
		> From: Laurent Desnogues [mailto:laurent.desnogues@xxxxxxxxx] 
		> Sent: Thursday, November 20, 2008 2:20 PM 
		> To: akshay.joshi@xxxxxxxxxxx 
		> Cc: arm-gnu@xxxxxxxxxxxxxxxx 
		> Subject: Re: [arm-gnu] Assembler error for Inline Assembly (cortex-A8 
		> processor) 
		>  
		>  
		> On Wed, Nov 19, 2008 at 4:15 PM, Akshay Joshi  
		> <akshay.joshi@xxxxxxxxxxx> 
		> wrote: 
		> > 
		> > For example: 
		> >         /tmp/cc4wfCkh.s:169: Error: bad instruction  
		> `vld1.32 d0[],[r7]!' 
		> > The syntax used for the above instruction in the ".c" file  
		> was as follows: 
		> > 
		> >      asm ("vld1.32 d0[], [r7]!"); 
		> > But, if I use the same instruction in a ".s" file, the  
		> error does not 
		> occur. 
		> >          vld1.32 d0[], [r7]! 
		> > Is there any option that I need to pass to the assembler /  
		> compiler? Or, 
		> is 
		> > my inline assembly syntax incorrect? 
		> > 
		> > Currently, I am using the following options while compiling  
		> the code: 
		> > 
		> >          -mcpu=cortex-a8 -mfpu=neon -O3  -fpack-struct  
		> -funroll-loops 
		> > -freorder-blocks-and-partition -lm -lc -lgcc 
		>  
		> Try adding -mfloat-abi=softfp. 
		>  
		>  
		> Laurent 
		>  
		>  
		>