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- Log -----------------------------------------------------------------
http://git.savannah.gnu.org/cgit/pnet.git/commit/?id=6d9f56bc2e4b3764b14e720fca69b3b62f635e1f
commit 6d9f56bc2e4b3764b14e720fca69b3b62f635e1f
Author: Klaus Treichel <[email protected]>
Date: Wed Jan 5 15:41:12 2011 +0100
Use offsetof to determine the alignment of the types if available in
il_align.h.
diff --git a/ChangeLog b/ChangeLog
index 88330a3..d6cbb2f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7,6 +7,9 @@
* engine/amd64_codegen.h (amd64_alu_reg_imm_size): Replace check for
reg == X86_EAX with reg == AMD64_RAX.
+ * include/il_align.h: Use offsetof to determine the alignment of the
+ types if available.
+
2011-01-04 Klaus Treichel <[email protected]>
* engine/cvm.c: Make the interpreter loop variables volatile again
diff --git a/include/il_align.h b/include/il_align.h
index dd128a2..5bfe61e 100644
--- a/include/il_align.h
+++ b/include/il_align.h
@@ -22,6 +22,9 @@
#define _IL_ALIGN_H
#include "il_values.h"
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
#ifdef __cplusplus
extern "C" {
@@ -30,7 +33,8 @@ extern "C" {
/*
* The following is some macro magic that attempts to detect
* the best alignment to use on the target platform. The final
- * value, "IL_BEST_ALIGNMENT", will be a compile-time constant.
+ * value, "IL_BEST_ALIGNMENT", will be a compile-time constant if
+ * the offsetof macro is available.
*/
#define _IL_ALIGN_CHECK_TYPE(type,name) \
@@ -39,8 +43,13 @@ extern "C" {
type field; \
}
+#ifdef offsetof
+#define _IL_ALIGN_FOR_TYPE(name) \
+ (offsetof(struct _IL_align_##name, field))
+#else
#define _IL_ALIGN_FOR_TYPE(name) \
((ILNativeUInt)(&(((struct _IL_align_##name *)0)->field)))
+#endif
#define _IL_ALIGN_MAX(a,b) \
((a) > (b) ? (a) : (b))
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 3 +++
include/il_align.h | 11 ++++++++++-
2 files changed, 13 insertions(+), 1 deletions(-)
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