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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2011-09-01 15:52:12 +0000 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2011-09-01 15:52:12 +0000 |
| commit | e2d0c6833eeab2bb9b5d9e6fabfdf0689042fb90 (patch) | |
| tree | f3764f435117a16fd409a88b24788324c7c0a39c /cpukit/score/cpu/nios2/nios2-context-switch.S | |
| parent | Remove. (diff) | |
| download | rtems-e2d0c6833eeab2bb9b5d9e6fabfdf0689042fb90.tar.bz2 | |
2011-09-01 Sebastian Huber <sebastian.huber@embedded-brains.de>
* cpu.c, cpu_asm.S: Removed files.
* nios2-context-initialize.c, nios2-context-switch.S,
nios2-fatal-halt.c, nios2-initialize-vectors.c, nios2-initialize.c,
nios2-isr-get-level.c, nios2-isr-install-raw-handler.c,
nios2-isr-install-vector.c, nios2-isr-is-in-progress.c,
nios2-isr-set-level.c, nios2-thread-dispatch-disabled.c,
rtems/score/nios2-utility.h: New files.
* Makefile.am, preinstall.am: Reflect changes above.
* irq.c: Update due to API changes.
* rtems/score/cpu.h: New functions _CPU_Initialize_vectors(),
_CPU_ISR_Set_level(), and _CPU_Fatal_halt() (instead of macros).
Support for external interrupt controller (EIC). Documentation
changes.
Diffstat (limited to 'cpukit/score/cpu/nios2/nios2-context-switch.S')
| -rw-r--r-- | cpukit/score/cpu/nios2/nios2-context-switch.S | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/cpukit/score/cpu/nios2/nios2-context-switch.S b/cpukit/score/cpu/nios2/nios2-context-switch.S new file mode 100644 index 0000000000..bf6b836f6b --- /dev/null +++ b/cpukit/score/cpu/nios2/nios2-context-switch.S @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2011 embedded brains GmbH + * + * Copyright (c) 2006 Kolja Waschk (rtemsdev/ixo.de) + * + * Derived from no_cpu/cpu_asm.S, copyright (c) 1989-1999, + * On-Line Applications Research Corporation (OAR). + * + * 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. + * + * $Id$ + */ + +#ifdef HAVE_CONFIG_H + #include "config.h" +#endif + +#include <rtems/score/cpu.h> +#include <rtems/score/nios2-utility.h> + + .extern _Nios2_Thread_dispatch_disabled + + .globl _CPU_Context_switch + .globl _CPU_Context_restore + +_CPU_Context_switch: + + movhi r12, %hiadj(_Nios2_Thread_dispatch_disabled) + addi r12, r12, %lo(_Nios2_Thread_dispatch_disabled) + ldw r9, 0(r12) + rdctl r8, status + stw r16, NIOS2_CONTEXT_OFFSET_R16(r4) + stw r17, NIOS2_CONTEXT_OFFSET_R17(r4) + stw r18, NIOS2_CONTEXT_OFFSET_R18(r4) + stw r19, NIOS2_CONTEXT_OFFSET_R19(r4) + stw r20, NIOS2_CONTEXT_OFFSET_R20(r4) + stw r21, NIOS2_CONTEXT_OFFSET_R21(r4) + stw r22, NIOS2_CONTEXT_OFFSET_R22(r4) + stw r23, NIOS2_CONTEXT_OFFSET_R23(r4) + stw fp, NIOS2_CONTEXT_OFFSET_FP(r4) + stw r8, NIOS2_CONTEXT_OFFSET_STATUS(r4) + stw sp, NIOS2_CONTEXT_OFFSET_SP(r4) + stw ra, NIOS2_CONTEXT_OFFSET_RA(r4) + stw r9, NIOS2_CONTEXT_OFFSET_TDD(r4) + +restore: + + ldw r10, NIOS2_CONTEXT_OFFSET_TDD(r5) + ldw r16, NIOS2_CONTEXT_OFFSET_R16(r5) + ldw r17, NIOS2_CONTEXT_OFFSET_R17(r5) + ldw r18, NIOS2_CONTEXT_OFFSET_R18(r5) + ldw r19, NIOS2_CONTEXT_OFFSET_R19(r5) + ldw r20, NIOS2_CONTEXT_OFFSET_R20(r5) + ldw r21, NIOS2_CONTEXT_OFFSET_R21(r5) + ldw r22, NIOS2_CONTEXT_OFFSET_R22(r5) + ldw r23, NIOS2_CONTEXT_OFFSET_R23(r5) + ldw fp, NIOS2_CONTEXT_OFFSET_FP(r5) + stw r10, 0(r12) + ldw r11, NIOS2_CONTEXT_OFFSET_STATUS(r5) + ldw sp, NIOS2_CONTEXT_OFFSET_SP(r5) + ldw ra, NIOS2_CONTEXT_OFFSET_RA(r5) + wrctl status, r11 + + ret + +_CPU_Context_restore: + + mov r5, r4 + br restore |