On 21/09/16 17:10, drwho wrote: > Hello, > > I am getting a hard exception fault when doing a divide on a int64_t on > a cortex-m3. Looking at the lss file, the compiler is doing the int64 > divide using __aeabi_ldivmod which uses the instruction movlt. movlt is > not supported by the cortex-m3. How do I get gcc to use the right > version of __aeabi_ldivmod? > movlt is perfectly legal on Cortex-m3 in IT blocks. > CFLAGS = -MMD -MP -march=armv7-m -mcpu=cortex-m3 -mfix-cortex-m3-ldrd > -mthumb -Wall -O3 > LDFLAG = -march=armv7-m -mcpu=cortex-m3 -mfix-cortex-m3-ldrd -mthumb > -nostartfiles -Wl,--no-warn-mismatch -Wl,-dT sam3n.ld > You might want to remove the -Wl,--no-warn-mismatch and check that your input files are correct. This is a sledgehammer that disables a lot of validation during linking. R. > I'm using arm-none-eabi-gcc v5.3.1 > > Jon
