Hi I think this is actually an RTEMS conditional issue but filed it as a GCC PR anyway for review.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64542 This was generated building arm-rtems multilib. The PR has a preprocessed file and can easily reproduce the error. Feedback appreciated. I suspect we have selected the wrong code based on the compilation flags or have an invalid multilib combination. arm-rtems4.11-gcc --pipe -mthumb -march=armv6-m --pipe -DHAVE_CONFIG_H -I../../.. -I../../../../../../lib/include -g -O2 -Wall -Wimplicit-function-declaration -Wstrict-prototypes -Wnested-externs -MT libscorecpu_a-cpu.o -MD -MP -MF .deps/libscorecpu_a-cpu.Tpo -c -o libscorecpu_a-cpu.o `test -f 'cpu.c' || echo '/users/joel/test-gcc/rtems/cpukit/score/cpu/arm/'`cpu.c {standard input}: Assembler messages: {standard input}:187: Error: selected processor does not support ARM opcodes {standard input}:188: Error: attempt to use an ARM instruction on a Thumb-only processor -- `mrs r3 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=3>,cpsr' {standard input}:189: Error: attempt to use an ARM instruction on a Thumb-only processor -- `bic r3 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=3>,#(1<<7)' {standard input}:190: Error: attempt to use an ARM instruction on a Thumb-only processor -- `orr r3 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=3>,r0 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=0>' {standard input}:191: Error: attempt to use an ARM instruction on a Thumb-only processor -- `msr cpsr,r3 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=3>' {standard input}:192: Error: attempt to use an ARM instruction on a Thumb-only processor -- `add r3 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=3>,pc,#1' {standard input}:193: Error: attempt to use an ARM instruction on a Thumb-only processor -- `bx r3 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=3>' {standard input}:218: Error: selected processor does not support ARM opcodes {standard input}:219: Error: attempt to use an ARM instruction on a Thumb-only processor -- `mrs r0 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=0>,cpsr' {standard input}:220: Error: attempt to use an ARM instruction on a Thumb-only processor -- `and r0 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=0>,#(1<<7)' {standard input}:221: Error: attempt to use an ARM instruction on a Thumb-only processor -- `add r3 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=3>,pc,#1' {standard input}:222: Error: attempt to use an ARM instruction on a Thumb-only processor -- `bx r3 <http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=3>' -- Joel Sherrill, Ph.D. Director of Research & Development joel.sherr...@oarcorp.com On-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35805 Support Available (256) 722-9985
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