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/*
* arch/arm64/lib/call_with_stack.S
*
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
/*
* void call_with_stack(void (*fn)(void *), void *arg, void *sp)
*
* Change the stack to that pointed at by sp, then invoke fn(arg) with
* the new stack.
*/
ENTRY(call_with_stack)
mov x3, sp
str x3, [x2, #-8]!
str lr, [x2, #-8]!
mov sp, x2
mov x2, x0
mov x0, x1
adr lr, 1f
br x2
1: ldr lr, [sp]
ldr x3, [sp, #8]
mov sp, x3
br lr
ENDPROC(call_with_stack)
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