zephyr/arch/x86/include/swapstk.h

57 lines
1.7 KiB
C

/*
* Copyright (c) 2011-2012, 2014 Wind River Systems, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file
* @brief Stack frame created by swap (IA-32)
*
* This file details the stack frame generated by _Swap() when it saves a task
* or fiber's context. This is specific to the IA-32 processor architecture.
*
* NOTE: _Swap() does not use this file as it uses the push instruction to
* save a context. Changes to the file will not automatically be picked up by
* _Swap(). Conversely, changes to _Swap() should be mirrored here if the
* stack frame is modified.
*/
#ifndef _SWAPSTK_H
#define _SWAPSTK_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ASMLANGUAGE
/* Stack of a saved context */
typedef struct s_SwapStk {
unsigned int eax; /* EAX register */
unsigned int ebp; /* EBP register */
unsigned int ebx; /* EBX register */
unsigned int esi; /* ESI register */
unsigned int edi; /* EDI register */
unsigned int retAddr; /* Return address of caller of _Swap() */
unsigned int param; /* Parameter passed to _Swap() */
} tSwapStk;
#endif /* _ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _SWAPSTK_H */