Manta Interactive Ray Tracer Development Mailing List

Text archives Help


[MANTA] asm in trunk.


Chronological Thread 
  • From: Abe Stephens <abe@sci.utah.edu>
  • To: "'manta@sci.utah.edu'" <manta@sci.utah.edu>
  • Subject: [MANTA] asm in trunk.
  • Date: Fri, 05 Aug 2005 16:21:50 -0700
Hey,

I've noticed that there is some gnu style IA32 assembly in the trunk.

/store/abe/Manta-trunk/Engine/ImageTraversers/AFR/evil.h(248): error: asm statements not supported in this environment
     asm("bsr %1,%0;" : "=a" (eax) : "m" (n));
     ^

/store/abe/Manta-trunk/Engine/ImageTraversers/AFR/evil.h(248): error: expected a ")"
     asm("bsr %1,%0;" : "=a" (eax) : "m" (n));
                      ^

/store/abe/Manta-trunk/Engine/ImageTraversers/AFR/evil.h(303): error: asm statements not supported in this environment
     asm ("movl %1,%0;"            /* copy f into i */
     ^

/store/abe/Manta-trunk/Engine/ImageTraversers/AFR/evil.h(306): error: expected a ")"
          : "=a" (i)               /* output: register int i is in %eax *


This is a problem for two reasons, first we don't have an IA-32 processor and second, Intel doesn't support gnu syntax for assembly instructions.

How necessary is this assembly? I am guessing it doesn't work well on PowerPC either. I suspect we can handle this in a similar way to the SCIRun/Threads code via cmake. Any concerns?

Abe





Archive powered by MHonArc 2.6.16.

Top of page