X-Git-Url: http://ftp.carnet.hr/carnet-debian/scm?p=php5-apc.git;a=blobdiff_plain;f=arch%2Fi386%2Fatomic.h;fp=arch%2Fi386%2Fatomic.h;h=069a5b06fa3c19eb590a1c3a71bf7b350a5b6858;hp=0000000000000000000000000000000000000000;hb=3682e0a7a26931aabca2b6e54eb08efd7dc0430b;hpb=575ce08215526bb71a967d69d601e77e1afbcd11

diff --git a/arch/i386/atomic.h b/arch/i386/atomic.h
new file mode 100644
index 0000000..069a5b0
--- /dev/null
+++ b/arch/i386/atomic.h
@@ -0,0 +1,79 @@
+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: Brian Shire <shire@php.net>                                 |
+  +----------------------------------------------------------------------+
+
+ */
+
+/* $Id: atomic.h,v 1.1 2006/09/29 07:13:01 shire Exp $ */
+
+
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <linux/futex.h>
+
+/* int sys_futex (void *futex, int op, int val, const struct timespec *timeout); */
+static inline long int apc_sys_futex(void *futex, int op, int val, const struct timespec *timeout) {
+
+  long int ret;
+
+  /* i386 system calls are performed with nt 80h operation.
+   *  the argument order is a, b, c, d, S, D  
+   */ 
+  asm volatile ("int $0x80" 
+       : "=a" (ret)
+       : "0" (SYS_futex), 
+         "b" (futex), 
+         "c" (op), 
+         "d" (val),
+         "S" (timeout)
+       : "memory"
+      );
+
+  return ret;
+
+} 
+
+
+static inline int apc_cmpxchg(volatile int *ptr, int old, int new) {
+
+    int prev;
+
+    asm volatile ("LOCK cmpxchgl %1, %2"
+                   : "=a" (prev)
+                   : "r" (new), 
+                     "m" (*(ptr)), 
+                     "0"(old)
+                   : "memory", "cc"
+                 );
+
+    return prev;
+}
+
+static inline int apc_xchg(volatile int *ptr, int new) {
+
+  int ret;
+  
+  asm volatile ("LOCK xchgl %[new], %[ptr]"
+                : "=a" (ret)
+                : [new] "0" (new), 
+                  [ptr] "m" (*(ptr))
+                : "memory"
+               );
+
+  return ret;
+  
+}
+