On Wed, 8 May 2013, Nikos Mavrogiannopoulos wrote:
Trying with the latest buildroot another error is issued:
arm-buildroot-linux-uclibcgnueabi-as -v
GNU assembler version 2.21.1 (arm-buildroot-linux-uclibcgnueabi) using
BFD version (GNU Binutils) 2.21.1
arm-buildroot-linux-uclibcgnueabi-gcc -I. -DHAVE_CONFIG_H -pipe -Os
-Wno-pointer-sign -Wall -W -Wmissing-prototypes -Wmissing-declarations
-Wstrict-prototypes -Wpointer-arith -Wbad-function-cast
-Wnested-externs -fpic -MT aes-encrypt-internal.o -MD -MP -MF
aes-encrypt-internal.o.d -fpic -c aes-encrypt-internal.s
aes-encrypt-internal.s: Assembler messages:
aes-encrypt-internal.s:140: Error: selected processor does not support
ARM mode `uxtb r8,r2'
aes-encrypt-internal.s:142: Error: selected processor does not support
ARM mode `uxtb r8,r3'
aes-encrypt-internal.s:144: Error: selected processor does not support
ARM mode `uxtb r8,r12'
aes-encrypt-internal.s:146: Error: selected processor does not support
ARM mode `uxtb r8,r14'
The uxtb instruction requires ARMv6, while an ARM10 is ARMv5, afaik.
So the functions using uxtb should only be enabled if the target is >=
ARMv6, not arm in general. (The check can probably be done by testing to
assemble such instructions, just as the check for neon does.)
// Martin
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