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syscall(2): make i386 less of an outlier
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Authored by brooks on Mar 5 2024, 9:49 PM.
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Summary

Unlike other architectures, i386 only defined syscall() and not
_syscall() or sys_syscall(). The syscall() function then invoked the
desired system call directly rather than invoking syscall(2). Keep the
latter as it's marginally more efficent, but also create the
conventional _syscall() and
sys_syscall() stubs.

This avoids the need to special case syscall(2) in the symbol list
generation in libsys.

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rG FreeBSD src repository
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