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29 lines
766 B
29 lines
766 B
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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# this routine calls a system call in the first bytes of the function
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# within the probe space.
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#
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.text
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.global my_yield
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.type my_yield, function
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my_yield:
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mov $0x18,%eax # this is the number of SYS_sched_yield
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syscall
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cmp $0xfffffffffffff001,%rax
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jae .fail
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retq
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.fail:
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or $0xffffffffffffffff,%rax
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retq
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