From d8d9b8f76f22b7a16a83e261e64f89ee611f49df Mon Sep 17 00:00:00 2001
From: Ralf Baechle <ralf@linux-mips.org>
Date: Sun, 1 Jun 1997 03:16:17 +0000
Subject: Initial revision

---
 include/asm-i386/semaphore.h | 46 ++++++++++++++++++++++++--------------------
 1 file changed, 25 insertions(+), 21 deletions(-)

(limited to 'include/asm-i386/semaphore.h')

diff --git a/include/asm-i386/semaphore.h b/include/asm-i386/semaphore.h
index 4395dfce0..3ba3f8af5 100644
--- a/include/asm-i386/semaphore.h
+++ b/include/asm-i386/semaphore.h
@@ -85,44 +85,45 @@ extern inline void down(struct semaphore * sem)
 {
 	__asm__ __volatile__(
 		"# atomic down operation\n\t"
-		"movl $1f,%%eax\n\t"
 #ifdef __SMP__
 		"lock ; "
 #endif
 		"decl 0(%0)\n\t"
-		"js " SYMBOL_NAME_STR(__down_failed)
-		"\n1:"
+		"js 2f\n"
+		"1:\n"
+		".section .text.lock,\"ax\"\n"
+		"2:\tpushl $1b\n\t"
+		"jmp __down_failed\n"
+		".previous"
 		:/* no outputs */
 		:"c" (sem)
-		:"ax","memory");
+		:"memory");
 }
 
-/*
- * This version waits in interruptible state so that the waiting
- * process can be killed.  The down_failed_interruptible routine
- * returns negative for signalled and zero for semaphore acquired.
- */
 extern inline int down_interruptible(struct semaphore * sem)
 {
-	int	ret;
+	int result;
 
 	__asm__ __volatile__(
 		"# atomic interruptible down operation\n\t"
-		"movl $1f,%0\n\t"
 #ifdef __SMP__
 		"lock ; "
 #endif
 		"decl 0(%1)\n\t"
-		"js " SYMBOL_NAME_STR(__down_failed_interruptible) "\n\t"
-		"xorl %0,%0"
-		"\n1:"
-		:"=a" (ret)
+		"js 2f\n\t"
+		"xorl %0,%0\n"
+		"1:\n"
+		".section .text.lock,\"ax\"\n"
+		"2:\tpushl $1b\n\t"
+		"jmp __down_failed_interruptible\n"
+		".previous"
+		:"=a" (result)
 		:"c" (sem)
 		:"memory");
-
-	return ret;
+	return result;
 }
 
+
 /*
  * Note! This is subtle. We jump to wake people up only if
  * the semaphore was negative (== somebody was waiting on it).
@@ -133,16 +134,19 @@ extern inline void up(struct semaphore * sem)
 {
 	__asm__ __volatile__(
 		"# atomic up operation\n\t"
-		"movl $1f,%%eax\n\t"
 #ifdef __SMP__
 		"lock ; "
 #endif
 		"incl 0(%0)\n\t"
-		"jle " SYMBOL_NAME_STR(__up_wakeup)
-		"\n1:"
+		"jle 2f\n"
+		"1:\n"
+		".section .text.lock,\"ax\"\n"
+		"2:\tpushl $1b\n\t"
+		"jmp __up_wakeup\n"
+		".previous"
 		:/* no outputs */
 		:"c" (sem)
-		:"ax", "memory");
+		:"memory");
 }
 
 #endif
-- 
cgit v1.2.3