On 31/03/16 18:26, Jim Wilson wrote: > On Thu, Mar 31, 2016 at 5:12 AM, fengwei.yin <fengwei....@linaro.org> wrote: >> Because gcc 4.9 could build this file without any issue, I apply >> --save-temps >> with gcc 4.9. The ii file is attached. Can't see significant differences. > > There is a patch in gcc-5 to make unified assembler syntax the > default. Unfortunately, it changes how extended asms work, which is > perhaps a bug. The message claims it doesn't affect extended asms, > but it does. > https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01196.html > The interesting bit is the change to ASM_APP_OFF. >
This is now https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70496 for FSF trunk. Sorry about the breakage. Ramana > gcc-4.9 emits a .thumb after the extended asm to switch back into > thumb mode just in case. gcc-5.3 instead emits .syntax unified, which > doesn't change the arm/thumb mode, just the syntax supported. This is > arguably a bug, but this doesn't immediately help you. It could take > a little time to get gcc-5.x source fixed, and then the compiler > binary releases. Or alternatively we could fix the asm to work with > gcc 5. > > Jim > _______________________________________________ > linaro-toolchain mailing list > linaro-toolchain@lists.linaro.org > https://lists.linaro.org/mailman/listinfo/linaro-toolchain > _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain
