selftests/powerpc: fix exec benchmark
The exec_target binary could segfault calling _exit(2) because r13 is not set up properly (and libc looks at that when performing a syscall). Call SYS_exit using syscall(2) which doesn't seem to have this problem. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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* Copyright 2018, Anton Blanchard, IBM Corp.
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*/
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void _exit(int);
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#define _GNU_SOURCE
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#include <unistd.h>
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#include <sys/syscall.h>
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void _start(void)
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{
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_exit(0);
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syscall(SYS_exit, 0);
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}
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