mirror of
https://github.com/facebookexperimental/reverie.git
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20c7020868
Summary: The OSS license linter doesn't like the word "its". Reviewed By: johnhurt Differential Revision: D36856385 fbshipit-source-id: 909037d96de8976f08004497d28b77838f8c6870
42 lines
925 B
C
42 lines
925 B
C
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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/* must build with flags -pie -fPIE -O */
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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/**
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* 0000000000000740 <sys_getpid>:
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* 740: b8 27 00 00 00 mov $0x27,%eax
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* 745: 0f 05 syscall
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* 747: c3 retq
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* 748: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
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* 74f: 00
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*/
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__attribute__((noinline)) static int sys_getpid(void) {
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int ret;
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asm volatile(
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"mov $0x27, %%eax\n\t"
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"syscall\n\t"
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: "=r"(ret));
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return ret;
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}
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int main(int argc, char* argv[]) {
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int pid0 = getpid();
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int pid = sys_getpid();
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printf("pid = %d\n", pid);
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if (pid0 != pid)
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abort();
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return 0;
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}
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