forked from Imagelibrary/binutils-gdb
ef27337758
This patch makes use of the support for several stack pointers introduced by the previous patch to switch between them as needed during unwinding. It introduces a new 'unwind-secure-frames' arm command to enable/disable mode switching during unwinding. It is enabled by default. It has been tested using an STM32L5 board (with cortex-m33) and the sample applications shipped with the STM32Cube development environment: GTZC_TZSC_MPCBB_TrustZone in STM32CubeL5/Projects/NUCLEO-L552ZE-Q/Examples/GTZC. The test consisted in setting breakpoints in various places and check that the backtrace is correct: SecureFault_Callback (Non-secure mode), __gnu_cmse_nonsecure_call (before and after the vpush instruction), SecureFault_Handler (Secure mode). This implies that we tested only some parts of this patch (only MSP* were used), but remaining parts seem reasonable. Signed-off-by: Torbjörn Svensson <torbjorn.svensson@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@foss.st.com> Signed-off-by: Christophe Lyon <christophe.lyon@arm.com>
