diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2012-01-07 07:44:37 -0500 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-01-07 15:40:51 -0500 |
| commit | b001befe58691ef3627458cd814e8cee7f845c5f (patch) | |
| tree | 1083f1a1cd3feeceeac4b395534df0ff032fdbc8 /arch/arm/lib | |
| parent | 31b2a868451d630bacfdeddc626371b3f9d9a01c (diff) | |
| parent | 928a11ba36f999436915ea2b1eadf54301f93059 (diff) | |
Merge branch 'samsung/dt' into next/dt
* samsung/dt: (3 commit)
Merge branch 'depends/rmk/for-linus' into samsung/dt
Merge branch 'depends/rmk/restart' into next/cleanup
Merge branch 'next/cleanup' into samsung/dt
Conflicts:
arch/arm/mach-tegra/board-dt.c
arch/arm/mach-tegra/include/mach/entry-macro.S
The latest version of the samsung/dt branch resolves
all sorts of conflicts with the latest upstream, no functional
changes that are not already there.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/lib')
| -rw-r--r-- | arch/arm/lib/Makefile | 3 | ||||
| -rw-r--r-- | arch/arm/lib/call_with_stack.S | 44 |
2 files changed, 46 insertions, 1 deletions
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index cf73a7f742d..0ade0acc1ed 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile | |||
| @@ -13,7 +13,8 @@ lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \ | |||
| 13 | testchangebit.o testclearbit.o testsetbit.o \ | 13 | testchangebit.o testclearbit.o testsetbit.o \ |
| 14 | ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \ | 14 | ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \ |
| 15 | ucmpdi2.o lib1funcs.o div64.o \ | 15 | ucmpdi2.o lib1funcs.o div64.o \ |
| 16 | io-readsb.o io-writesb.o io-readsl.o io-writesl.o | 16 | io-readsb.o io-writesb.o io-readsl.o io-writesl.o \ |
| 17 | call_with_stack.o | ||
| 17 | 18 | ||
| 18 | mmu-y := clear_user.o copy_page.o getuser.o putuser.o | 19 | mmu-y := clear_user.o copy_page.o getuser.o putuser.o |
| 19 | 20 | ||
diff --git a/arch/arm/lib/call_with_stack.S b/arch/arm/lib/call_with_stack.S new file mode 100644 index 00000000000..916c80f13ae --- /dev/null +++ b/arch/arm/lib/call_with_stack.S | |||
| @@ -0,0 +1,44 @@ | |||
| 1 | /* | ||
| 2 | * arch/arm/lib/call_with_stack.S | ||
| 3 | * | ||
| 4 | * Copyright (C) 2011 ARM Ltd. | ||
| 5 | * Written by Will Deacon <will.deacon@arm.com> | ||
| 6 | * | ||
| 7 | * This program is free software; you can redistribute it and/or modify | ||
| 8 | * it under the terms of the GNU General Public License version 2 as | ||
| 9 | * published by the Free Software Foundation. | ||
| 10 | * | ||
| 11 | * This program is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 14 | * GNU General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU General Public License | ||
| 17 | * along with this program; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include <linux/linkage.h> | ||
| 22 | #include <asm/assembler.h> | ||
| 23 | |||
| 24 | /* | ||
| 25 | * void call_with_stack(void (*fn)(void *), void *arg, void *sp) | ||
| 26 | * | ||
| 27 | * Change the stack to that pointed at by sp, then invoke fn(arg) with | ||
| 28 | * the new stack. | ||
| 29 | */ | ||
| 30 | ENTRY(call_with_stack) | ||
| 31 | str sp, [r2, #-4]! | ||
| 32 | str lr, [r2, #-4]! | ||
| 33 | |||
| 34 | mov sp, r2 | ||
| 35 | mov r2, r0 | ||
| 36 | mov r0, r1 | ||
| 37 | |||
| 38 | adr lr, BSYM(1f) | ||
| 39 | mov pc, r2 | ||
| 40 | |||
| 41 | 1: ldr lr, [sp] | ||
| 42 | ldr sp, [sp, #4] | ||
| 43 | mov pc, lr | ||
| 44 | ENDPROC(call_with_stack) | ||
