When I defined MALLOC_ABI_ALIGNMENT, I inadvertently changed the default
alignment for
various hppa*-*-*bsd* targets. Nick Hudson is still maintaining the
netbsd target.
This patch corrects the default malloc alignment for 32-bit targest and
moves the linux special
case to its own file.
Committed to trunk.
Dave
--
John David Anglin dave.ang...@bell.net
2018-01-16 John David Anglin <dang...@gcc.gnu.org>
* config/pa.h (MALLOC_ABI_ALIGNMENT): Set 32-bit alignment default to
64 bits.
* config/pa/pa32-linux.h (MALLOC_ABI_ALIGNMENT): Set alignment to
128 bits.
Index: config/pa/pa.h
===================================================================
--- config/pa/pa.h (revision 256561)
+++ config/pa/pa.h (working copy)
@@ -307,7 +307,7 @@
POSIX types such as pthread_mutex_t require 16-byte alignment. Again,
this is non critical since 16-byte alignment is no longer needed for
atomic operations. */
-#define MALLOC_ABI_ALIGNMENT (TARGET_SOM ? 64 : 128)
+#define MALLOC_ABI_ALIGNMENT (TARGET_64BIT ? 128 : 64)
/* Make arrays of chars word-aligned for the same reasons. */
#define DATA_ALIGNMENT(TYPE, ALIGN) \
Index: config/pa/pa32-linux.h
===================================================================
--- config/pa/pa32-linux.h (revision 256561)
+++ config/pa/pa32-linux.h (working copy)
@@ -62,3 +62,8 @@
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE BITS_PER_WORD
+
+/* POSIX types such as pthread_mutex_t require 16-byte alignment to retain
+ layout compatibility with the original linux thread implementation. */
+#undef MALLOC_ABI_ALIGNMENT
+#define MALLOC_ABI_ALIGNMENT 128
