linux requires EL1,however uboot is in EL3 mode.linux is halted.
System call excepton handler about the svc stack in the linux
I am studying System call in the linux. I know that is using SVC exception handler.
the related codes are as follow
====================exception handler codes===================================
ENTRY(vector_swi)
sub sp, sp, #S_FRAME_SIZE
stmia sp, {r0 - r12…
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