/* * Copyright (c) 2007 Michal Kebrt * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * - The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @addtogroup kernel_arm32 * @{ */ /** @file * @brief Thread context. */ #ifndef KERN_arm32_CONTEXT_H_ #define KERN_arm32_CONTEXT_H_ #include <align.h> #include <arch/stack.h> #include <arch/context_struct.h> #include <arch/regutils.h> /* Put one item onto the stack to support CURRENT and align it up. */ #define SP_DELTA (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT)) #define context_set(c, _pc, stack, size) \ do { \ (c)->pc = (uintptr_t) (_pc); \ (c)->sp = ((uintptr_t) (stack)) + (size) - SP_DELTA; \ (c)->fp = 0; \ (c)->cpu_mode = SUPERVISOR_MODE; \ } while (0) #ifndef __ASSEMBLER__ #endif /* __ASSEMBLER__ */ #endif /** @} */