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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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