created for 64 bit architecture support

src/libCom/adjustment.c

@@ -0,0 +1,66 @@
+/* src/libCom/adjustment.c */
+
+/* Author: Peregrine McGehee Date: 21NOV1997 */
+/*****************************************************************
+                          COPYRIGHT NOTIFICATION
+*****************************************************************
+ 
+(C)  COPYRIGHT 1993 UNIVERSITY OF CHICAGO
+ 
+This software was developed under a United States Government license
+described on the COPYRIGHT_UniversityOfChicago file included as part
+of this distribution.
+**********************************************************************/
+
+/*
+ *
+ * Modification Log:
+ * -----------------
+ * .01  11-21-97	pmm	Initial Implementation	
+ */
+
+#ifdef vxWorks
+#include <vxWorks.h>
+#include <taskLib.h>
+#include "fast_lock.h"
+#endif
+
+#include <string.h>
+#include <stdlib.h>
+#include <stddef.h>
+
+#include "shareLib.h"
+#include "adjustment.h"
+
+#define epicsExportSharedSymbols
+
+epicsShareFunc size_t epicsShareAPI adjustToWorstCaseAlignment(size_t size)
+{
+    int align_size, adjust;
+    struct test_long_word { char c; long lw; };
+    struct test_double { char c; double d; };
+    struct test_ptr { char c; void *p; };
+    int test_long_size = sizeof(struct test_long_word) - sizeof(long);
+    int test_double_size = sizeof(struct test_double) - sizeof(double);
+    int test_ptr_size = sizeof(struct test_ptr) - sizeof(void *);
+    size_t adjusted_size = size;
+    
+    /*
+     * Use Jeff's alignment tests to determine worst case of long,
+     * double or pointer alignment requirements.
+    */
+    align_size = test_long_size > test_ptr_size ?
+                  test_long_size : test_ptr_size;
+    
+    align_size = align_size > test_double_size ?
+                  align_size : test_double_size;
+  
+    /*
+     * Increase the size to fit worst case alignment if not already
+     * properly aligned.
+     */ 
+    adjust = align_size - size%align_size;
+    if (adjust != align_size) adjusted_size += adjust;
+    
+    return (adjusted_size);
+}

src/libCom/adjustment.h

@@ -0,0 +1,19 @@
+/* src/libCom/adjustment.h */
+
+/*****************************************************************
+                          COPYRIGHT NOTIFICATION
+*****************************************************************
+ 
+(C)  COPYRIGHT 1993 UNIVERSITY OF CHICAGO
+ 
+This software was developed under a United States Government license
+described on the COPYRIGHT_UniversityOfChicago file included as part
+of this distribution.
+**********************************************************************/
+#ifndef INCadjustmenth
+#define INCadjustmenth
+#include "shareLib.h"
+epicsShareFunc size_t epicsShareAPI adjustToWorstCaseAlignment(size_t size);
+
+#endif /*INCadjustmenth*/
+

src/libCom/misc/adjustment.c

@@ -0,0 +1,66 @@
+/* src/libCom/adjustment.c */
+
+/* Author: Peregrine McGehee Date: 21NOV1997 */
+/*****************************************************************
+                          COPYRIGHT NOTIFICATION
+*****************************************************************
+ 
+(C)  COPYRIGHT 1993 UNIVERSITY OF CHICAGO
+ 
+This software was developed under a United States Government license
+described on the COPYRIGHT_UniversityOfChicago file included as part
+of this distribution.
+**********************************************************************/
+
+/*
+ *
+ * Modification Log:
+ * -----------------
+ * .01  11-21-97	pmm	Initial Implementation	
+ */
+
+#ifdef vxWorks
+#include <vxWorks.h>
+#include <taskLib.h>
+#include "fast_lock.h"
+#endif
+
+#include <string.h>
+#include <stdlib.h>
+#include <stddef.h>
+
+#include "shareLib.h"
+#include "adjustment.h"
+
+#define epicsExportSharedSymbols
+
+epicsShareFunc size_t epicsShareAPI adjustToWorstCaseAlignment(size_t size)
+{
+    int align_size, adjust;
+    struct test_long_word { char c; long lw; };
+    struct test_double { char c; double d; };
+    struct test_ptr { char c; void *p; };
+    int test_long_size = sizeof(struct test_long_word) - sizeof(long);
+    int test_double_size = sizeof(struct test_double) - sizeof(double);
+    int test_ptr_size = sizeof(struct test_ptr) - sizeof(void *);
+    size_t adjusted_size = size;
+    
+    /*
+     * Use Jeff's alignment tests to determine worst case of long,
+     * double or pointer alignment requirements.
+    */
+    align_size = test_long_size > test_ptr_size ?
+                  test_long_size : test_ptr_size;
+    
+    align_size = align_size > test_double_size ?
+                  align_size : test_double_size;
+  
+    /*
+     * Increase the size to fit worst case alignment if not already
+     * properly aligned.
+     */ 
+    adjust = align_size - size%align_size;
+    if (adjust != align_size) adjusted_size += adjust;
+    
+    return (adjusted_size);
+}

src/libCom/misc/adjustment.h

@@ -0,0 +1,19 @@
+/* src/libCom/adjustment.h */
+
+/*****************************************************************
+                          COPYRIGHT NOTIFICATION
+*****************************************************************
+ 
+(C)  COPYRIGHT 1993 UNIVERSITY OF CHICAGO
+ 
+This software was developed under a United States Government license
+described on the COPYRIGHT_UniversityOfChicago file included as part
+of this distribution.
+**********************************************************************/
+#ifndef INCadjustmenth
+#define INCadjustmenth
+#include "shareLib.h"
+epicsShareFunc size_t epicsShareAPI adjustToWorstCaseAlignment(size_t size);
+
+#endif /*INCadjustmenth*/
+