Initial import of Leif's work

grub-core/lib/arm/setjmp.S

@@ -0,0 +1,55 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2013  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/symbol.h>
+#include <grub/dl.h>
+
+	.file	"setjmp.S"
+	.syntax	unified
+#if !defined (__thumb2__)
+	.arm
+#define ARM(x...)	x
+#define THUMB(x...)
+#else
+	.thumb
+#define THUMB(x...)	x
+#define ARM(x...)
+#endif
+
+	.text
+
+/*
+ * int grub_setjmp (grub_jmp_buf env)
+ */
+FUNCTION(grub_setjmp)
+ THUMB(	mov	ip, sp			)
+ THUMB(	stm	r0, { r4-r11, ip, lr }	)
+ ARM(	stm	r0, { r4-r11, sp, lr }	)
+	mov	r0, #0
+	bx	lr
+
+/*
+ * int grub_longjmp (grub_jmp_buf env, int val)
+ */
+FUNCTION(grub_longjmp)
+ THUMB(	ldm	r0, { r4-r11, ip, lr }	)
+ THUMB(	mov	sp, ip			)
+ ARM(	ldm	r0, { r4-r11, sp, lr }	)
+	movs	r0, r1
+	moveq	r0, #1
+	bx	lr