Hi, I am working on adding support for a Spansion microcontroller which has an Cortex R5 core + VFP3 co processor.
I have added the below line set_feature(&cpu->env, ARM_FEATURE_VFP3) to cortex_r5_initfn at /target-arm/cpu.c But, still I got undefined exception when the processor encountered any VFP instructions. To get around the error, I had to enable code protected by CONFIG_USER_ONLY. Specifically in arm_cpu_reset, where the bits 20 to 24 are set in env->cp15.cpacr_el1 and env->vfp.xregs[ARM_VFP_FPEXC] = 1 << 30. I am sure there is correct way to do things. I'm new to qemu. Any help will be much appreciated. Thank you. Best regards, Karthik
