On 13.11.12 3:41 , GoodMan wrote:
> On Friday, November 9, 2012 12:37:47 PM UTC-8, lang...@fonz.dk wrote:
>> On 9 Nov., 02:36, GoodMan <o...@compandent.com> wrote:
>>
>>> I am looking for ETSI intrinsic for Android NDK (basic operations).
>>
>>>
>>
>>> ARM has such in the form of dspfns.h file, but its code is not suitable for NDK (uses __asm{} rather than asm() etc.).  The ARM __asm{} can specify a variable name, while the asm() can specify a register.  How can I specify C variable into asm() ?
>>
>>>
>>
>>> Is there anything like _NASSERT  for NDK?
>>
>>>
>>
>>> Thanks,
>>
>>> AM
>>
>>
>>
>> NDK is basically arm-eabi-gcc so you should probably look at the gcc
>>
>> documentation
>>
>>
>>
>> -Lasse
>
>
> I never found a way to put C variables inside inline assembler (in C files) for Android NDK which is basically arm-eabi-gcc.  I would greatly appreciate if someone could help on that!
>
> Thanks,
> AM


There is a method in GCC to access C variables from __asm__() code.
Get the GCC manual from <http://gcc.gnu.org/onlinedocs/>.

In my copy (version 4.7.1) it is in:

    6.41 Assembler Instructions with C Expression Operands

An example for arm-eabi-gcc in Cortex-M3 mode:

Source:

#include <inttypes.h>

/*   Change processing priority, return old priority   */

uint32_t change_pri(uint32_t newpri)
     {
     uint32_t oldpri;

     __asm__ (
         "mrs %[r], basepri\n\t"  /* get old priority */
         "msr basepri, %[n]"      /* update priority */

         : [r] "=&r" (oldpri)
         : [n] "r"   (newpri)
         );

     return oldpri;
     }

Compiler listing (part of larger module):

  410                  change_pri:
  411                  @ args = 0, pretend = 0, frame = 0
  412                  @ frame_needed = 0, uses_anonymous_args = 0
  413                  @ link register save eliminated.
  414                  @ 55 "kernel.c" 1
  415 0000 EFF31183    mrs r3, basepri
  416 0004 80F31188    msr basepri, r0
  417                  @ 0 "" 2
  418                  .thumb
  419 0008 1846        mov r0, r3
  420 000a 7047        bx lr

-- 

Tauno Voipio

On Thursday, November 8, 2012 5:36:23 PM UTC-8, GoodMan wrote:
> I am looking for ETSI intrinsic for Android NDK (basic operations).
> 
> 
> 
> ARM has such in the form of dspfns.h file, but its code is not suitable for NDK (uses __asm{} rather than asm() etc.).  The ARM __asm{} can specify a variable name, while the asm() can specify a register.  How can I specify C variable into asm() ?
> 
> 
> 
> Is there anything like _NASSERT  for NDK?
> 
> 
> 
> Thanks,
> 
> AM

I never found a way to put C variables inside inline assembler (in C files) for Android NDK which is basically arm-eabi-gcc.  I would greatly appreciate if someone could help on that!

Thanks,
AM

On Friday, November 9, 2012 12:37:47 PM UTC-8, lang...@fonz.dk wrote:
> On 9 Nov., 02:36, GoodMan <o...@compandent.com> wrote:
> 
> > I am looking for ETSI intrinsic for Android NDK (basic operations).
> 
> >
> 
> > ARM has such in the form of dspfns.h file, but its code is not suitable for NDK (uses __asm{} rather than asm() etc.). &#4294967295;The ARM __asm{} can specify a variable name, while the asm() can specify a register. &#4294967295;How can I specify C variable into asm() ?
> 
> >
> 
> > Is there anything like _NASSERT &#4294967295;for NDK?
> 
> >
> 
> > Thanks,
> 
> > AM
> 
> 
> 
> NDK is basically arm-eabi-gcc so you should probably look at the gcc
> 
> documentation
> 
> 
> 
> -Lasse


I never found a way to put C variables inside inline assembler (in C files) for Android NDK which is basically arm-eabi-gcc.  I would greatly appreciate if someone could help on that!

Thanks,
AM

On 9 Nov., 02:36, GoodMan <o...@compandent.com> wrote:
> I am looking for ETSI intrinsic for Android NDK (basic operations).
>
> ARM has such in the form of dspfns.h file, but its code is not suitable for NDK (uses __asm{} rather than asm() etc.). &#4294967295;The ARM __asm{} can specify a variable name, while the asm() can specify a register. &#4294967295;How can I specify C variable into asm() ?
>
> Is there anything like _NASSERT &#4294967295;for NDK?
>
> Thanks,
> AM

NDK is basically arm-eabi-gcc so you should probably look at the gcc
documentation

-Lasse

I am looking for ETSI intrinsic for Android NDK (basic operations).

ARM has such in the form of dspfns.h file, but its code is not suitable for NDK (uses __asm{} rather than asm() etc.).  The ARM __asm{} can specify a variable name, while the asm() can specify a register.  How can I specify C variable into asm() ?

Is there anything like _NASSERT  for NDK?

Thanks,
AM