In arm cortex a53, I am switching exception level EL3 to EL1. I attached code below.
mov x0, xzr mov x0, #0b00101 /* EL1 */ orr x0, x0, #(3 << 8)/* Enable SError and Debug Abort. */ orr x0, x0, #(1 << 7) /* IRQ interrupt Process state mask. */ orr x0, x0, #(1 << 6) /* FIQ interrupt Process state mask. */ msr spsr_el3, x0 ldr x0, =el1_secure msr elr_el3, x0 isb eret |
I checked Currentel register, it has changed exception level (EL1). after that stack pointer pointing to somewhere. i don't know why.
mrs x6, Currentel ubfx x6, x6, #2, #2 |
Here is example of stack pointer register
x30 0x7e1190 sp 0xddd141a18806092b pc 0x910e3c <main+4> cpsr 0xaaaaaaaa [ #1 #3 #5 I D #11 #13 #15 #17 #19 SS UAO TCO #27 C N ] |
anyone recommend your thoughts what i have to do clear that error.
