linux-kernel - [PATCH v5 07/14] tools/nolibc: arch-loongarch.h: shrink with SYSCALL

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Message-Id: <a906a8e5bb39d88fee89be8f2bca8bf62307d468.1687957589.git.falcon@tinylab.org>
Date:   Wed, 28 Jun 2023 21:22:21 +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
Subject: [PATCH v5 07/14] tools/nolibc: arch-loongarch.h: shrink with SYSCALL_CLOBBERLIST

my_syscall<N> share a same long clobber list, define a macro for them.

Signed-off-by: Zhangjin Wu <falcon@...ylab.org>
---
 tools/include/nolibc/arch-loongarch.h | 25 +++++++++++--------------
 1 file changed, 11 insertions(+), 14 deletions(-)

diff --git a/tools/include/nolibc/arch-loongarch.h b/tools/include/nolibc/arch-loongarch.h
index 292d6a58dc87..fbb4844f7993 100644
--- a/tools/include/nolibc/arch-loongarch.h
+++ b/tools/include/nolibc/arch-loongarch.h
@@ -23,6 +23,10 @@
  */
 #define __ARCH_WANT_SYS_PSELECT6
 
+#define SYSCALL_CLOBBERLIST			\
+	"memory", "$t0", "$t1", "$t2", "$t3",	\
+	"$t4", "$t5", "$t6", "$t7", "$t8"
+
 #define my_syscall0(num)							\
 ({										\
 	register long _num __asm__ ("a7") = (num);				\
@@ -32,8 +36,7 @@
 		"syscall 0\n"							\
 		: "=r"(_arg1)							\
 		: "r"(_num)							\
-		: "memory", "$t0", "$t1", "$t2", "$t3",				\
-		  "$t4", "$t5", "$t6", "$t7", "$t8"				\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg1;									\
 })
@@ -47,8 +50,7 @@
 		"syscall 0\n"							\
 		: "+r"(_arg1)							\
 		: "r"(_num)							\
-		: "memory", "$t0", "$t1", "$t2", "$t3",				\
-		  "$t4", "$t5", "$t6", "$t7", "$t8"				\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg1;									\
 })
@@ -64,8 +66,7 @@
 		: "+r"(_arg1)							\
 		: "r"(_arg2),							\
 		  "r"(_num)							\
-		: "memory", "$t0", "$t1", "$t2", "$t3",				\
-		  "$t4", "$t5", "$t6", "$t7", "$t8"				\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg1;									\
 })
@@ -82,8 +83,7 @@
 		: "+r"(_arg1)							\
 		: "r"(_arg2), "r"(_arg3),					\
 		  "r"(_num)							\
-		: "memory", "$t0", "$t1", "$t2", "$t3",				\
-		  "$t4", "$t5", "$t6", "$t7", "$t8"				\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg1;									\
 })
@@ -101,8 +101,7 @@
 		: "+r"(_arg1)							\
 		: "r"(_arg2), "r"(_arg3), "r"(_arg4),				\
 		  "r"(_num)							\
-		: "memory", "$t0", "$t1", "$t2", "$t3",				\
-		  "$t4", "$t5", "$t6", "$t7", "$t8"				\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg1;									\
 })
@@ -121,8 +120,7 @@
 		: "+r"(_arg1)							\
 		: "r"(_arg2), "r"(_arg3), "r"(_arg4), "r"(_arg5),		\
 		  "r"(_num)							\
-		: "memory", "$t0", "$t1", "$t2", "$t3",				\
-		  "$t4", "$t5", "$t6", "$t7", "$t8"				\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg1;									\
 })
@@ -142,8 +140,7 @@
 		: "+r"(_arg1)							\
 		: "r"(_arg2), "r"(_arg3), "r"(_arg4), "r"(_arg5), "r"(_arg6),	\
 		  "r"(_num)							\
-		: "memory", "$t0", "$t1", "$t2", "$t3",				\
-		  "$t4", "$t5", "$t6", "$t7", "$t8"				\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg1;									\
 })
-- 
2.25.1