On Wednesday 06 August 2008, Joseph S. Myers wrote: > On Wed, 6 Aug 2008, Joel Sherrill wrote: > > $ arm-rtems4.9-gcc -mfpu=neon -mfloat-abi=softfp -mcpu=arm7tdmi -c > > test_neon.c /tmp/ccBzigjD.s: Assembler messages: > > /tmp/ccBzigjD.s:13: Error: selected processor does not support `vldr > > d18,[fp,#-32]' > > > > > > So with that combination of options gcc defines __ARM_NEON__. > > And gas ends up knowing the instructions are invalid. > > The compiler generates > > .cpu arm7tdmi > .fpu neon > > for this example.
Oh, I bet this is a crufty old target that doesn't use the .cpu/.fpu directives. The gcc driver is almost certainly passing the wrong set of commandline options to the the assembler. I find it hard to care about non-eabi targets nowadays. Paul
