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Message-Id: <20220419004225.3952530-3-paulmck@kernel.org>
Date: Mon, 18 Apr 2022 17:41:27 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: gwml@...r.gnuweeb.org, kernel-team@...com, w@....eu,
Willy Tarreau <w@....eu>,
"Paul E . McKenney" <paulmck@...nel.org>
Subject: [PATCH nolibc 03/61] tools/nolibc/std: move the standard type definitions to std.h
From: Willy Tarreau <w@....eu>
The ordering of includes and definitions for now is a bit of a mess, as
for example asm/signal.h is included after int defintions, but plenty of
structures are defined later as they rely on other includes.
Let's move the standard type definitions to a dedicated file that is
included first. We also move NULL there. This way all other includes
are aware of it, and we can bring asm/signal.h back to the top of the
file.
Signed-off-by: Willy Tarreau <w@....eu>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
tools/include/nolibc/nolibc.h | 42 ++++--------------------------
tools/include/nolibc/std.h | 49 +++++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+), 37 deletions(-)
create mode 100644 tools/include/nolibc/std.h
diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index 4660637d9b17..186a78c25326 100644
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -83,7 +83,12 @@
#ifndef _NOLIBC_H
#define _NOLIBC_H
+/* standard type definitions */
+#include "std.h"
+
+/* system includes */
#include <asm/unistd.h>
+#include <asm/signal.h> // for SIGCHLD
#include <asm/ioctls.h>
#include <asm/errno.h>
#include <linux/fs.h>
@@ -106,40 +111,6 @@ static int errno;
*/
#define MAX_ERRNO 4095
-/* Declare a few quite common macros and types that usually are in stdlib.h,
- * stdint.h, ctype.h, unistd.h and a few other common locations.
- */
-
-#define NULL ((void *)0)
-
-/* stdint types */
-typedef unsigned char uint8_t;
-typedef signed char int8_t;
-typedef unsigned short uint16_t;
-typedef signed short int16_t;
-typedef unsigned int uint32_t;
-typedef signed int int32_t;
-typedef unsigned long long uint64_t;
-typedef signed long long int64_t;
-typedef unsigned long size_t;
-typedef signed long ssize_t;
-typedef unsigned long uintptr_t;
-typedef signed long intptr_t;
-typedef signed long ptrdiff_t;
-
-/* for stat() */
-typedef unsigned int dev_t;
-typedef unsigned long ino_t;
-typedef unsigned int mode_t;
-typedef signed int pid_t;
-typedef unsigned int uid_t;
-typedef unsigned int gid_t;
-typedef unsigned long nlink_t;
-typedef signed long off_t;
-typedef signed long blksize_t;
-typedef signed long blkcnt_t;
-typedef signed long time_t;
-
/* for poll() */
struct pollfd {
int fd;
@@ -248,9 +219,6 @@ struct stat {
#define WEXITSTATUS(status) (((status) & 0xff00) >> 8)
#define WIFEXITED(status) (((status) & 0x7f) == 0)
-/* for SIGCHLD */
-#include <asm/signal.h>
-
/* Below comes the architecture-specific code. For each architecture, we have
* the syscall declarations and the _start code definition. This is the only
* global part. On all architectures the kernel puts everything in the stack
diff --git a/tools/include/nolibc/std.h b/tools/include/nolibc/std.h
new file mode 100644
index 000000000000..1747ae125392
--- /dev/null
+++ b/tools/include/nolibc/std.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * Standard definitions and types for NOLIBC
+ * Copyright (C) 2017-2021 Willy Tarreau <w@....eu>
+ */
+
+#ifndef _NOLIBC_STD_H
+#define _NOLIBC_STD_H
+
+/* Declare a few quite common macros and types that usually are in stdlib.h,
+ * stdint.h, ctype.h, unistd.h and a few other common locations. Please place
+ * integer type definitions and generic macros here, but avoid OS-specific and
+ * syscall-specific stuff, as this file is expected to be included very early.
+ */
+
+/* note: may already be defined */
+#ifndef NULL
+#define NULL ((void *)0)
+#endif
+
+/* stdint types */
+typedef unsigned char uint8_t;
+typedef signed char int8_t;
+typedef unsigned short uint16_t;
+typedef signed short int16_t;
+typedef unsigned int uint32_t;
+typedef signed int int32_t;
+typedef unsigned long long uint64_t;
+typedef signed long long int64_t;
+typedef unsigned long size_t;
+typedef signed long ssize_t;
+typedef unsigned long uintptr_t;
+typedef signed long intptr_t;
+typedef signed long ptrdiff_t;
+
+/* those are commonly provided by sys/types.h */
+typedef unsigned int dev_t;
+typedef unsigned long ino_t;
+typedef unsigned int mode_t;
+typedef signed int pid_t;
+typedef unsigned int uid_t;
+typedef unsigned int gid_t;
+typedef unsigned long nlink_t;
+typedef signed long off_t;
+typedef signed long blksize_t;
+typedef signed long blkcnt_t;
+typedef signed long time_t;
+
+#endif /* _NOLIBC_STD_H */
--
2.31.1.189.g2e36527f23
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