linux-user: Simplify host <-> target errno conversion using macros

Convert the host_to_target_errno_table[] array to a switch
case to allow compiler optimizations (such noticing the identity
function when host and guest errnos match). Extract the errnos
list as to a new includible unit, using a generic macro. Remove
the code related to target_to_host_errno_table[] initialization.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210708170550.1846343-8-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

1 files changed, 140 insertions, 0 deletions

diff --git a/linux-user/errnos.c.inc b/linux-user/errnos.c.inc
new file mode 100644
index 0000000000..963ba1ce9d
--- /dev/null
+++ b/linux-user/errnos.c.inc
@@ -0,0 +1,140 @@
+/*
+ * This list is the union of errno values overridden in asm-<arch>/errno.h
+ * minus the errnos that are not actually generic to all archs.
+ *
+ * Please keep this list sorted alphabetically.
+ *
+ *  Copyright (c) 2003 Fabrice Bellard
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+E(EADDRINUSE)
+E(EADDRNOTAVAIL)
+E(EADV)
+E(EAFNOSUPPORT)
+E(EAGAIN)
+E(EALREADY)
+E(EBADE)
+E(EBADFD)
+E(EBADMSG)
+E(EBADR)
+E(EBADRQC)
+E(EBADSLT)
+E(EBFONT)
+E(ECANCELED)
+E(ECHRNG)
+E(ECOMM)
+E(ECONNABORTED)
+E(ECONNREFUSED)
+E(ECONNRESET)
+E(EDEADLK)
+E(EDESTADDRREQ)
+E(EDOTDOT)
+E(EDQUOT)
+E(EHOSTDOWN)
+E(EHOSTUNREACH)
+#ifdef EHWPOISON
+E(EHWPOISON)
+#endif
+E(EIDRM)
+E(EILSEQ)
+E(EINPROGRESS)
+E(EISCONN)
+E(EISNAM)
+#ifdef EKEYEXPIRED
+E(EKEYEXPIRED)
+#endif
+#ifdef EKEYREJECTED
+E(EKEYREJECTED)
+#endif
+#ifdef EKEYREVOKED
+E(EKEYREVOKED)
+#endif
+E(EL2HLT)
+E(EL2NSYNC)
+E(EL3HLT)
+E(EL3RST)
+E(ELIBACC)
+E(ELIBBAD)
+E(ELIBEXEC)
+E(ELIBMAX)
+E(ELIBSCN)
+E(ELNRNG)
+E(ELOOP)
+E(EMEDIUMTYPE)
+E(EMSGSIZE)
+E(EMULTIHOP)
+E(ENAMETOOLONG)
+E(ENAVAIL)
+E(ENETDOWN)
+E(ENETRESET)
+E(ENETUNREACH)
+E(ENOANO)
+E(ENOBUFS)
+E(ENOCSI)
+E(ENODATA)
+#ifdef ENOKEY
+E(ENOKEY)
+#endif
+E(ENOLCK)
+E(ENOLINK)
+E(ENOMEDIUM)
+#ifdef ENOMSG
+E(ENOMSG)
+#endif
+E(ENONET)
+E(ENOPKG)
+E(ENOPROTOOPT)
+E(ENOSR)
+E(ENOSTR)
+E(ENOSYS)
+E(ENOTCONN)
+E(ENOTEMPTY)
+E(ENOTNAM)
+#ifdef ENOTRECOVERABLE
+E(ENOTRECOVERABLE)
+#endif
+E(ENOTSOCK)
+E(ENOTUNIQ)
+E(EOPNOTSUPP)
+E(EOVERFLOW)
+#ifdef EOWNERDEAD
+E(EOWNERDEAD)
+#endif
+E(EPFNOSUPPORT)
+E(EPROTO)
+E(EPROTONOSUPPORT)
+E(EPROTOTYPE)
+E(EREMCHG)
+E(EREMOTE)
+E(EREMOTEIO)
+E(ERESTART)
+#ifdef ERFKILL
+E(ERFKILL)
+#endif
+E(ESHUTDOWN)
+E(ESOCKTNOSUPPORT)
+E(ESRMNT)
+E(ESTALE)
+E(ESTRPIPE)
+E(ETIME)
+E(ETIMEDOUT)
+E(ETOOMANYREFS)
+E(EUCLEAN)
+E(EUNATCH)
+E(EUSERS)
+E(EXFULL)