49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/*
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* Copyright 2010 Stefan Lankes, Chair for Operating Systems,
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* RWTH Aachen University
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of MetalSVM.
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*
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*/
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#ifndef __ARCH_TASKS__
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#define __ARCH_TASKS__
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#include <metalsvm/stddef.h>
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#include <metalsvm/tasks_types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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int arch_fork(task_t* task);
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int create_default_frame(task_t* task, entry_point_t ep, void* arg);
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int register_task(task_t* task);
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void reschedule(void);
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static inline int jump_to_user_code(uint32_t ep, uint32_t stack)
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{
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asm volatile ("mov %0, %%ds; mov %0, %%fs; mov %0, %%gs; mov %0, %%es" :: "r"(0x23));
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asm volatile ("push $0x23; push %0; push $0x1B; push %1" :: "r"(stack), "r"(ep));
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asm volatile ("lret");
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return 0;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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