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SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world. And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download (registration required) various documents highlighting:

System Workbench for STM32


vstmdb/vldmia not supported in thumb mode

I am trying to compile a project for Cortex M7 processor (STM32F767BIT6)
With following assembler options
arm-none-eabi-as -g -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard
i am getting the error:
startup/os_cpu_a.s:231: Error: selected processor does not support `vstmdb R0!,{S16-S31}’ in Thumb mode
startup/os_cpu_a.s:252: Error: selected processor does not support `vldmia R0!,{S16-S31}’ in Thumb mode

Even when compile with -mcpu=cortex-m7 the same error is shown.

please help