(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

1 files changed, 51 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h b/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h
new file mode 100644
index 0000000000..30c2e3a6ce
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h
@@ -0,0 +1,51 @@
+/* Copyright (C) 1999, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Philip Blundell <philb@gnu.org>, 1999.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <bits/armsigctx.h>
+#include "kernel-features.h"
+
+#define SIGCONTEXT int _a2, int _a3, int _a4, union k_sigcontext
+#define SIGCONTEXT_EXTRA_ARGS _a2, _a3, _a4,
+
+/* The sigcontext structure changed between 2.0 and 2.1 kernels.  On any
+   modern system we should be able to assume that the "new" format will be
+   in use.  */
+#if __LINUX_KERNEL_VERSION > 131328
+
+#define GET_PC(ctx)	((void *) ctx.v21.arm_pc)
+#define GET_FRAME(ctx)	ADVANCE_STACK_FRAME ((void *) ctx.v21.arm_fp)
+#define GET_STACK(ctx)	((void *) ctx.v21.arm_sp)
+
+#else
+
+#define GET_PC(ctx)	((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \
+			 ctx.v20.reg.ARM_pc : ctx.v21.arm_pc))
+#define GET_FRAME(ctx)	\
+	ADVANCE_STACK_FRAME((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \
+			 ctx.v20.reg.ARM_fp : ctx.v21.arm_fp))
+#define GET_STACK(ctx)	((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \
+			 ctx.v20.reg.ARM_sp : ctx.v21.arm_sp))
+
+#endif
+
+#define ADVANCE_STACK_FRAME(frm)	\
+			((struct layout *)frm - 1)
+
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+  (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))