2019-06-26 16:41:07 +00:00
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# NOTE: Keep this consistent with `alternative_stack.rs`.
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2019-06-26 12:44:51 +00:00
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.globl run_on_alternative_stack
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run_on_alternative_stack:
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2019-06-25 12:01:56 +00:00
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# (stack_end, stack_begin)
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# We need to ensure 16-byte alignment here.
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pushq %r15
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pushq %r14
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pushq %r13
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pushq %r12
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pushq %rbx
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pushq %rbp
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movq %rsp, -16(%rdi)
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2019-06-26 12:44:51 +00:00
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leaq run_on_alternative_stack.returning(%rip), %rax
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2019-06-25 12:01:56 +00:00
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movq %rax, -24(%rdi)
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movq %rsi, %rsp
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popq %rbp
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popq %rbx
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popq %r12
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popq %r13
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popq %r14
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popq %r15
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retq
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2019-06-26 12:44:51 +00:00
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run_on_alternative_stack.returning:
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2019-06-25 12:01:56 +00:00
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movq (%rsp), %rsp
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popq %rbp
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popq %rbx
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popq %r12
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popq %r13
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popq %r14
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popq %r15
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retq
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