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Message-Id: <d6dea45987fda7edc0bdc3a1f6865ab8edd3cfd8.1687957589.git.falcon@tinylab.org>
Date: Wed, 28 Jun 2023 21:11:44 +0800
From: Zhangjin Wu <falcon@...ylab.org>
To: thomas@...ch.de, w@....eu
Cc: falcon@...ylab.org, arnd@...db.de, david.laight@...lab.com,
linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
linux-riscv@...ts.infradead.org,
Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH v5 02/14] tools/nolibc: unistd.h: apply __sysret() helper
Use __sysret() to shrink the whole _syscall() to oneline code.
Reviewed-by: Thomas Weißschuh <linux@...ssschuh.net>
Signed-off-by: Zhangjin Wu <falcon@...ylab.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 0e832e10a0b2..fabc846f797b 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 _syscall_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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