The calls `Mmap` and `Munmap` were removed for z/OS.
Syscall removed occurred in: 508397

This change exposes them in a z/OS specific file
(to remove the accidental deletion of them in future refactors of the APIs for `unix-like` OSes).

Change-Id: Ice0cabfb4547cab2ffa7130b7c26d9cc38233afe
GitHub-Last-Rev: e7b4680
GitHub-Pull-Request: #186
Reviewed-on: https://go-review.googlesource.com/c/sys/+/569359
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>
Reviewed-by: Michael Knyszek <[email protected]>

…rr error)

Fixes golang/go#66234

Change-Id: I1e4a94e1ca8c01a29bab18e0bf12238c511fe1c6
Reviewed-on: https://go-review.googlesource.com/c/sys/+/570435
Reviewed-by: Quim Muntal <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Michael Knyszek <[email protected]>
Reviewed-by: Alex Brainman <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>

Serial ports are still widely used to communicate with a large range of
devices.

This change adds the remaining functions described in "Serial
Communications in Win32", enabling Go applications and libraries to be
written that support the full set of serial port functionality on
Windows.

x/sys/unix already has equivalent functionality through termios.

See https://learn.microsoft.com/en-us/previous-versions/ms810467(v=msdn.10).

Change-Id: I57f9ed6b7dbcc2331f740bd95b6483f141b0ad6f
GitHub-Last-Rev: 0a5a744
GitHub-Pull-Request: #187
Reviewed-on: https://go-review.googlesource.com/c/sys/+/572295
Reviewed-by: David Chase <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Than McIntosh <[email protected]>
Reviewed-by: Alex Brainman <[email protected]>

This is a follow-up to https://go-review.googlesource.com/c/sys/+/572295
and specifically the comment
https://go-review.googlesource.com/c/sys/+/572295/comment/a00e1a2e_e3b01666/.

All other structs and methods us uint32 in golang.org/x/sys/windows
for flag bitmasks, so make the serial communication structs use uint32
to be consistent with the rest of the package.

As a side effect the DTR_CONTROL_* and RTS_CONTROL_* constants are
updated to reflect the positions of the bits in the 32-bit flags.

Change-Id: Ie19774a8ef5411d7df1e5b0d36806aa1d401fa86
GitHub-Last-Rev: bc93d94
GitHub-Pull-Request: #189
Reviewed-on: https://go-review.googlesource.com/c/sys/+/575635
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>
Auto-Submit: Dmitri Shuralyov <[email protected]>
Reviewed-by: Alex Brainman <[email protected]>
Reviewed-by: Than McIntosh <[email protected]>