[PATCH v2 2/4] tools/nolibc: unistd.h: apply __sysret() helper

From: Zhangjin Wu
Date: Tue Jun 06 2023 - 04:15:19 EST


Use __sysret() to shrink the whole _syscall() to oneline code.

Signed-off-by: Zhangjin Wu <falcon@xxxxxxxxxxx>
---
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