diff options
| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2011-09-24 12:56:51 +0000 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2011-09-24 12:56:51 +0000 |
| commit | c5ed14844e379eaefaf6cfe27f54d9f17f8984e1 (patch) | |
| tree | 1102b1d3f7df560af2b99f3bdc23f25618239290 /cpukit/score/cpu/arm/armv7m-context-restore.c | |
| parent | 2011-09-24 Sebastian Huber <sebastian.huber@embedded-brains.de> (diff) | |
| download | rtems-c5ed14844e379eaefaf6cfe27f54d9f17f8984e1.tar.bz2 | |
2011-09-24 Sebastian Huber <sebastian.huber@embedded-brains.de>
* rtems/score/armv7m.h, armv7m-context-initialize.c,
armv7m-context-restore.c, armv7m-context-switch.c,
armv7m-exception-handler-get.c, armv7m-exception-handler-set.c,
armv7m-exception-priority-get.c, armv7m-exception-priority-set.c,
armv7m-initialize.c, armv7m-isr-dispatch.c, armv7m-isr-enter-leave.c,
armv7m-isr-level-get.c, armv7m-isr-level-set.c,
armv7m-isr-vector-install.c, armv7m-multitasking-start-stop.c: New
files.
* Makefile.am, preinstall.am: Reflect changes above.
* rtems/score/arm.h: Define ARM_MULTILIB_ARCH_V4 and
ARM_MULTILIB_ARCH_V7M.
* rtems/score/cpu.h, cpu_asm.S, cpu.c, arm_exc_abort.S,
arm_exc_handler_high.c, arm_exc_handler_low.S, arm_exc_interrupt.S:
Define CPU_HAS_HARDWARE_INTERRUPT_STACK to FALSE. Use
ARM_MULTILIB_ARCH_V4 and ARM_MULTILIB_ARCH_V7M.
Diffstat (limited to 'cpukit/score/cpu/arm/armv7m-context-restore.c')
| -rw-r--r-- | cpukit/score/cpu/arm/armv7m-context-restore.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/cpukit/score/cpu/arm/armv7m-context-restore.c b/cpukit/score/cpu/arm/armv7m-context-restore.c new file mode 100644 index 0000000000..effa3e704e --- /dev/null +++ b/cpukit/score/cpu/arm/armv7m-context-restore.c @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2011 Sebastian Huber. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + */ + +#ifdef HAVE_CONFIG_H + #include "config.h" +#endif + +#include <rtems/score/percpu.h> + +#ifdef ARM_MULTILIB_ARCH_V7M + +#include <rtems/score/armv7m.h> + +void __attribute__((naked)) _CPU_Context_restore( + Context_Control *heir +) +{ + __asm__ volatile ( + "movw r2, #:lower16:_Per_CPU_Information\n" + "movt r2, #:upper16:_Per_CPU_Information\n" + "ldr r3, [r0, %[isrctxoff]]\n" + "ldr sp, [r0, %[spctxoff]]\n" + "ldm r0, {r4-r11, lr}\n" + "str r3, [r2, %[isrpcpuoff]]\n" + "bx lr\n" + : + : [spctxoff] "J" (offsetof(Context_Control, register_sp)), + [isrctxoff] "J" (offsetof(Context_Control, isr_nest_level)), + [isrpcpuoff] "J" (offsetof(Per_CPU_Control, isr_nest_level)) + ); + __builtin_unreachable(); +} + +#endif /* ARM_MULTILIB_ARCH_V7M */ |