Chris Coleman 99a268fa16 arch: arm: Collect full register state in Cortex-M Exception Stack Frame ... To debug hard-to-reproduce faults/panics, it's helpful to get the full register state at the time a fault occurred. This enables recovering full backtraces and the state of local variables at the time of a crash. This PR introduces a new Kconfig option, CONFIG_EXTRA_EXCEPTION_INFO, to facilitate this use case. The option enables the capturing of the callee-saved register state (r4-r11 & exc_return) during a fault. The info is forwarded to `k_sys_fatal_error_handler` in the z_arch_esf_t parameter. From there, the data can be saved for post-mortem analysis. To test the functionality a new unit test was added to tests/arch/arm_interrupt which verifies the register contents passed in the argument match the state leading up to a crash. Signed-off-by: Chris Coleman <chris@memfault.com>		2020-08-31 10:13:27 +02:00
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arc
arm	arch: arm: Collect full register state in Cortex-M Exception Stack Frame	2020-08-31 10:13:27 +02:00
common
nios2	arch: arm: Collect full register state in Cortex-M Exception Stack Frame	2020-08-31 10:13:27 +02:00
posix
riscv
x86
xtensa
CMakeLists.txt
Kconfig	arch: arm: Collect full register state in Cortex-M Exception Stack Frame	2020-08-31 10:13:27 +02:00