linux-kernel - [PATCH v5 08/14] tools/nolibc: arch-mips.h: shrink with SYSCALL

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Date:   Wed, 28 Jun 2023 21:31:25 +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 08/14] tools/nolibc: arch-mips.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-mips.h | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/tools/include/nolibc/arch-mips.h b/tools/include/nolibc/arch-mips.h
index 1fd1eedc12a6..55a9f01825e0 100644
--- a/tools/include/nolibc/arch-mips.h
+++ b/tools/include/nolibc/arch-mips.h
@@ -57,6 +57,10 @@ struct sys_stat_struct {
  *     don't have to experience issues with register constraints.
  */
 
+#define SYSCALL_CLOBBERLIST			\
+	"memory", "cc", "at", "v1", "hi", "lo",	\
+	"t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9"
+
 #define my_syscall0(num)							\
 ({										\
 	register long _num __asm__ ("v0") = (num);				\
@@ -68,8 +72,7 @@ struct sys_stat_struct {
 		"addiu $sp, $sp, 32\n"						\
 		: "=r"(_num), "=r"(_arg4)					\
 		: "r"(_num)							\
-		: "memory", "cc", "at", "v1", "hi", "lo",			\
-		  "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9"	\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg4 ? -_num : _num;							\
 })
@@ -87,8 +90,7 @@ struct sys_stat_struct {
 		: "=r"(_num), "=r"(_arg4)					\
 		: "0"(_num),							\
 		  "r"(_arg1)							\
-		: "memory", "cc", "at", "v1", "hi", "lo",			\
-		  "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9"	\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg4 ? -_num : _num;							\
 })
@@ -107,8 +109,7 @@ struct sys_stat_struct {
 		: "=r"(_num), "=r"(_arg4)					\
 		: "0"(_num),							\
 		  "r"(_arg1), "r"(_arg2)					\
-		: "memory", "cc", "at", "v1", "hi", "lo",			\
-		  "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9"	\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg4 ? -_num : _num;							\
 })
@@ -128,8 +129,7 @@ struct sys_stat_struct {
 		: "=r"(_num), "=r"(_arg4)					\
 		: "0"(_num),							\
 		  "r"(_arg1), "r"(_arg2), "r"(_arg3)				\
-		: "memory", "cc", "at", "v1", "hi", "lo",			\
-		  "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9"	\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg4 ? -_num : _num;							\
 })
@@ -149,8 +149,7 @@ struct sys_stat_struct {
 		: "=r" (_num), "=r"(_arg4)					\
 		: "0"(_num),							\
 		  "r"(_arg1), "r"(_arg2), "r"(_arg3), "r"(_arg4)		\
-		: "memory", "cc", "at", "v1", "hi", "lo",			\
-		  "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9"	\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg4 ? -_num : _num;							\
 })
@@ -172,8 +171,7 @@ struct sys_stat_struct {
 		: "=r" (_num), "=r"(_arg4)					\
 		: "0"(_num),							\
 		  "r"(_arg1), "r"(_arg2), "r"(_arg3), "r"(_arg4), "r"(_arg5)	\
-		: "memory", "cc", "at", "v1", "hi", "lo",			\
-		  "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9"	\
+		: SYSCALL_CLOBBERLIST						\
 	);									\
 	_arg4 ? -_num : _num;							\
 })
-- 
2.25.1