From: Zhangjin Wu <falcon@tinylab.org>
To: thomas@t-8ch.de, w@1wt.eu
Cc: falcon@tinylab.org, arnd@arndb.de, linux-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-riscv@lists.infradead.org
Subject: [PATCH v3 2/3] tools/nolibc: unistd.h: apply __sysret() helper
Date: Wed, 7 Jun 2023 19:31:39 +0800 [thread overview]
Message-ID: <af5635d5e7a10429fe30b79e090e67bbec707195.1686135913.git.falcon@tinylab.org> (raw)
In-Reply-To: <cover.1686135913.git.falcon@tinylab.org>
Use __sysret() to shrink the whole _syscall() to oneline code.
Signed-off-by: Zhangjin Wu <falcon@tinylab.org>
---
tools/include/nolibc/unistd.h | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)
diff --git a/tools/include/nolibc/unistd.h b/tools/include/nolibc/unistd.h
index c20b2fbf065e..7e3c005d28ba 100644
--- a/tools/include/nolibc/unistd.h
+++ b/tools/include/nolibc/unistd.h
@@ -56,16 +56,7 @@ int tcsetpgrp(int fd, pid_t pid)
return ioctl(fd, TIOCSPGRP, &pid);
}
-#define _syscall(N, ...) \
-({ \
- long _ret = my_syscall##N(__VA_ARGS__); \
- if (_ret < 0) { \
- SET_ERRNO(-_ret); \
- _ret = -1; \
- } \
- _ret; \
-})
-
+#define _syscall(N, ...) __sysret(my_syscall##N(__VA_ARGS__))
#define _sycall_narg(...) __syscall_narg(__VA_ARGS__, 6, 5, 4, 3, 2, 1, 0)
#define __syscall_narg(_0, _1, _2, _3, _4, _5, _6, N, ...) N
#define _syscall_n(N, ...) _syscall(N, __VA_ARGS__)
--
2.25.1
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next prev parent reply other threads:[~2023-06-07 11:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-07 11:28 [PATCH v3 0/3] tools/nolibc: add a new syscall helper Zhangjin Wu
2023-06-07 11:30 ` [PATCH v3 1/3] tools/nolibc: sys.h: add a syscall return helper Zhangjin Wu
2023-06-07 11:31 ` Zhangjin Wu [this message]
2023-06-07 11:32 ` [PATCH v3 3/3] tools/nolibc: sys.h: apply __sysret() helper Zhangjin Wu
2023-06-07 21:41 ` [PATCH v3 0/3] tools/nolibc: add a new syscall helper Thomas Weißschuh
2023-06-08 10:10 ` Zhangjin Wu
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