__set_PRIMASK(state) had been directly inlined to avoid a hardfault that
occured when branching after waking up from sleep with DBG_STANDBY,
DBG_STOP or DBG_SLEEP set in DBG_CR.
The hardfault occured when returning from the branch to irq_restore,
since the function is now inlined the branch does not happen either.
Refer to #14015 for more details.
- The __NOP() that was added in #8518 is now remooved.
- When DBG_STANDBY, DBG_STOP or DBG_SLEEP are set in DBG_CR a hardfault
occurs on wakeup from sleep. This was first diagnosed in #8518. When
enabled, a hardfault occured when returning from a branch to irq_restore()
we avoid the call by inlining the function call. See #11830 for more
details.
This new function allows to jump to another execution
environment (VTOR) located at a certain (aligned) address.
It's used to boot firmwares at another location than
`CPU_FLASH_BASE`.
The user needs to ensure that the CPU using this feature
is able to be initialised at least twice while jumping
to the RIOT `reset_handler_default` function, since it
initialises the CPU again (calls cpu_init()).
Co-authored-by: Kaspar Schleiser <kaspar@schleiser.de>
Refactor cortexm_init to allow bits and pieces of
it to be called separately, while retaining the
current API, too. Needed for non-standard
Cortex-M initialisation, such as with nRF52
SoftDevice.
Instead of using `weak` function definitions, this PR handles
default implementations using `PROVIDES_x` defines, allowing
for cpus/pm realted modules to use their own implementations.
register is deprecated when building C++11 code and removed in C++17,
using it will cause build failures with C++ and -Werror. The register
hint keyword is likely ignored in GCC anyway.
- added a centralized core implementation for all cortex CPUs
- moved default stack size defines to cpu.h in cortexm_common
- moved uart0 bufsize define to cpu.h in cortexm_common
- moved typed of panic_t to cpu.h in cortexm_common
- removed coretx-m[0|3|4]
- moved their content to cortexm_common
- adjusted cortex Makefiles to this new name
- adjusted cortex Makefiles new structure
- fixes to cortexm-common
- Added ARM CMSIS headers to cortexm_common
- thread_exit fixes to cortexm-common
- cortexm-common adjusted documentation
- cortexm_common added eINT dINT defines for now
