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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-07 06:15:25 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-07 06:15:25 +0400
commit770e1b035dcb6ec3f8ee69dda0815dd1e220a683 (patch)
treee6d36abfdb053fbc722aea8d7e946d6d1b93c7e1 /arch/arm/lib/call_with_stack.S
parentd3d0b024348c040f0d6851e2e59fc961677d5169 (diff)
parent7b9dd47136c07ffd883aff6926c7b281e4c1eea4 (diff)
downloadlinux-770e1b035dcb6ec3f8ee69dda0815dd1e220a683.tar.xz
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'for-linus' of git://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (207 commits) ARM: 7267/1: Remove BUILD_BUG_ON from asm/bug.h ARM: 7269/1: mach-sa1100: fix sched_clock breakage ARM: 7198/1: arm/imx6: add restart support for imx6q ARM: restart: remove the now empty arch_reset() ARM: restart: remove comments about adding code to arch_reset() ARM: restart: lpc32xx & u300: remove unnecessary printk ARM: restart: plat-samsung: remove plat/reset.h and s5p_reset_hook ARM: restart: w90x900: use new restart hook ARM: restart: Versatile Express: use new restart hook ARM: restart: versatile: use new restart hook ARM: restart: u300: use new restart hook ARM: restart: tegra: use new restart hook ARM: restart: spear: use new restart hook ARM: restart: shark: use new restart hook ARM: restart: sa1100: use new restart hook ARM: 7252/1: restart: S5PV210: use new restart hook ARM: 7251/1: restart: S5PC100: use new restart hook ARM: 7250/1: restart: S5P64X0: use new restart hook ARM: 7266/1: restart: S3C64XX: use new restart hook ARM: 7265/1: restart: S3C24XX: use new restart hook ... Fix up trivial conflict in arch/arm/mm/init.c due to removal of memblock_init() clashing with the movement of the sorting of the meminfo array.
Diffstat (limited to 'arch/arm/lib/call_with_stack.S')
-rw-r--r--arch/arm/lib/call_with_stack.S44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/lib/call_with_stack.S b/arch/arm/lib/call_with_stack.S
new file mode 100644
index 000000000000..916c80f13ae7
--- /dev/null
+++ b/arch/arm/lib/call_with_stack.S
@@ -0,0 +1,44 @@
+/*
+ * arch/arm/lib/call_with_stack.S
+ *
+ * Copyright (C) 2011 ARM Ltd.
+ * Written by Will Deacon <will.deacon@arm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+/*
+ * void call_with_stack(void (*fn)(void *), void *arg, void *sp)
+ *
+ * Change the stack to that pointed at by sp, then invoke fn(arg) with
+ * the new stack.
+ */
+ENTRY(call_with_stack)
+ str sp, [r2, #-4]!
+ str lr, [r2, #-4]!
+
+ mov sp, r2
+ mov r2, r0
+ mov r0, r1
+
+ adr lr, BSYM(1f)
+ mov pc, r2
+
+1: ldr lr, [sp]
+ ldr sp, [sp, #4]
+ mov pc, lr
+ENDPROC(call_with_stack)