b23bca5cb3
All changes come from: from YAMAMOTO Takashi <yamamoto@midokura.com> Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
147 lines
5.1 KiB
Diff
147 lines
5.1 KiB
Diff
From 10891b1c9eda0c87e33b0c0ba87f17a83930093c Mon Sep 17 00:00:00 2001
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From: Xiang Xiao <xiaoxiang@xiaomi.com>
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Date: Fri, 2 Oct 2020 13:25:43 +0800
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Subject: [PATCH] [libcxx] Port to NuttX(https://nuttx.apache.org/) RTOS
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Since NuttX conform to POSIX standard, the code need to add is very simple
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Co-authored-by: YAMAMOTO Takashi <yamamoto@midokura.com>
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Differential Revision: https://reviews.llvm.org/D88718
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---
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include/__config | 31 +++++++++++++++++++++++++-
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include/__locale | 2 ++
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include/support/nuttx/xlocale.h | 18 +++++++++++++++
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src/include/config_elast.h | 4 ++++
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src/locale.cpp | 2 +-
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5 files changed, 55 insertions(+), 2 deletions(-)
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create mode 100644 include/support/nuttx/xlocale.h
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diff --git a/include/__config libcxx/include/__config
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index 575147cead4..32036094017 100644
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--- a/include/__config
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+++ libcxx/include/__config
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@@ -10,6 +10,34 @@
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#ifndef _LIBCPP_CONFIG
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#define _LIBCPP_CONFIG
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+// NuttX is sometimes built as a native target.
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+// In that case, the __NuttX__ macro is predefined by the compiler.
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+// https://github.com/NuttX/buildroot
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+//
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+// In other cases, __NuttX__ is an ordinary user-definded macro.
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+// It's especially the case for NuttX sim, which is a target to run
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+// the entire NuttX as a program on the host OS, which can be Linux,
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+// macOS, Windows, etc.
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+// https://cwiki.apache.org/confluence/display/NUTTX/NuttX+Simulation
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+// In that case, the host OS compiler is used to build NuttX.
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+// Thus, eg. NuttX sim on macOS is built with __APPLE__.
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+// We #undef predefined macros for those possible host OSes here
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+// because the OS APIs this library should use are of NuttX,
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+// not the host OS.
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+#if defined(__NuttX__)
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+#undef __linux__
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+#undef __APPLE__
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+#undef __FreeBSD__
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+#undef __NetBSD__
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+#undef _WIN32
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+#undef __sun__
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+#undef _AIX
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+// For the current use of the __unix__ macro in this library,
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+// NuttX is not __unix__.
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+// This might need to be revisited in future.
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+#undef __unix__
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+#endif
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+
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#if defined(_MSC_VER) && !defined(__clang__)
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# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
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@@ -1125,6 +1153,7 @@ _LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container(
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# if defined(__FreeBSD__) || \
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defined(__wasi__) || \
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defined(__NetBSD__) || \
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+ defined(__NuttX__) || \
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defined(__linux__) || \
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defined(__GNU__) || \
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defined(__APPLE__) || \
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@@ -1227,7 +1256,7 @@ _LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container(
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# endif
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#endif
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-#if defined(__BIONIC__) || defined(__CloudABI__) || \
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+#if defined(__BIONIC__) || defined(__CloudABI__) || defined(__NuttX__) || \
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defined(__Fuchsia__) || defined(__wasi__) || defined(_LIBCPP_HAS_MUSL_LIBC)
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#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE
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#endif
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diff --git a/include/__locale libcxx/include/__locale
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index 6d10fa4d3d6..fb391861f23 100644
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--- a/include/__locale
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+++ libcxx/include/__locale
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@@ -21,6 +21,8 @@
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#if defined(_LIBCPP_MSVCRT_LIKE)
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# include <cstring>
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# include <support/win32/locale_win32.h>
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+#elif defined(__NuttX__)
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+# include <support/nuttx/xlocale.h>
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#elif defined(_AIX)
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# include <support/ibm/xlocale.h>
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#elif defined(__ANDROID__)
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diff --git a/include/support/nuttx/xlocale.h libcxx/include/support/nuttx/xlocale.h
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new file mode 100644
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index 00000000000..b70d6200504
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--- /dev/null
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+++ libcxx/include/support/nuttx/xlocale.h
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@@ -0,0 +1,18 @@
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+// -*- C++ -*-
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+//===-------------------- support/nuttx/xlocale.h -------------------------===//
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+//
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+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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+// See https://llvm.org/LICENSE.txt for license information.
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+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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+//
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+//===----------------------------------------------------------------------===//
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+
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+#ifndef _LIBCPP_SUPPORT_NUTTX_XLOCALE_H
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+#define _LIBCPP_SUPPORT_NUTTX_XLOCALE_H
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+
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+#if defined(__NuttX__)
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+#include <support/xlocale/__posix_l_fallback.h>
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+#include <support/xlocale/__strtonum_fallback.h>
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+#endif // __NuttX__
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+
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+#endif
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diff --git a/src/include/config_elast.h libcxx/src/include/config_elast.h
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index 501cbc4ffeb..3113f9fb5cd 100644
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--- a/src/include/config_elast.h
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+++ libcxx/src/include/config_elast.h
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@@ -17,10 +17,14 @@
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#include <errno.h>
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#endif
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+// Note: _LIBCPP_ELAST needs to be defined only on platforms
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+// where strerror/strerror_r can't handle out-of-range errno values.
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#if defined(ELAST)
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#define _LIBCPP_ELAST ELAST
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#elif defined(_NEWLIB_VERSION)
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#define _LIBCPP_ELAST __ELASTERROR
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+#elif defined(__NuttX__)
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+// No _LIBCPP_ELAST needed on NuttX
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#elif defined(__Fuchsia__)
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// No _LIBCPP_ELAST needed on Fuchsia
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#elif defined(__wasi__)
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diff --git a/src/locale.cpp libcxx/src/locale.cpp
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index b9180880e49..25699f29ec9 100644
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--- a/src/locale.cpp
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+++ libcxx/src/locale.cpp
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@@ -30,7 +30,7 @@
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#include "__sso_allocator"
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#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
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#include "support/win32/locale_win32.h"
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-#elif !defined(__BIONIC__)
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+#elif !defined(__BIONIC__) && !defined(__NuttX__)
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#include <langinfo.h>
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#endif
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#include <stdlib.h>
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--
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2.17.1
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