160 lines
4.3 KiB
C
160 lines
4.3 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file templates/chcore.h
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* @brief Port related template macros and structures.
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* @addtogroup core
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* @{
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*/
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#ifndef _CHCORE_H_
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#define _CHCORE_H_
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/**
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* Unique macro for the implemented architecture.
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*/
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#define CH_ARCHITECTURE_XXX
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/**
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* Name of the implemented architecture.
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*/
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#define CH_ARCHITECTURE_NAME ""
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/**
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* Base type for stack alignment.
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* This type is used only for stack alignment reasons thus can be anything from
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* a char to a double.
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*/
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typedef uint8_t stkalign_t;
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/**
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* @brief Interrupt saved context.
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* @details This structure represents the stack frame saved during a
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* preemption-capable interrupt handler.
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*/
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struct extctx {
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};
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/**
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* @brief System saved context.
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* @details This structure represents the inner stack frame during a context
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* switching.
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*/
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struct intctx {
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};
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/**
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* @brief Platform dependent part of the @p Thread structure.
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* @details This structure usually contains just the saved stack pointer
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* defined as a pointer to a @p intctx structure.
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*/
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struct context {
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struct intctx *sp;
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};
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/**
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* Platform dependent part of the @p chThdInit() API.
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* This code usually setup the context switching frame represented by a
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* @p intctx structure.
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*/
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#define SETUP_CONTEXT(workspace, wsize, pf, arg) { \
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}
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/**
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* Stack size for the system idle thread.
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* This size depends on the idle thread implementation, usually the idle
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* thread should take no more space than those reserved
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* by @p INT_REQUIRED_STACK.
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*/
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#ifndef IDLE_THREAD_STACK_SIZE
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#define IDLE_THREAD_STACK_SIZE 0
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#endif
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/**
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* Per-thread stack overhead for interrupts servicing, it is used in the
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* calculation of the correct working area size.
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* This value can be zero on those architecture where there is a separate
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* interrupt stack and the stack space between @p intctx and @p extctx is
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* known to be zero.
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*/
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#ifndef INT_REQUIRED_STACK
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#define INT_REQUIRED_STACK 0
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#endif
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/**
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* Enforces a correct alignment for a stack area size value.
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*/
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#define STACK_ALIGN(n) ((((n) - 1) | (sizeof(stkalign_t) - 1)) + 1)
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/**
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* Computes the thread working area global size.
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*/
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#define THD_WA_SIZE(n) STACK_ALIGN(sizeof(Thread) + \
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sizeof(struct intctx) + \
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sizeof(struct extctx) + \
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(n) + (INT_REQUIRED_STACK))
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/**
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* Macro used to allocate a thread working area aligned as both position and
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* size.
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*/
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#define WORKING_AREA(s, n) stkalign_t s[THD_WA_SIZE(n) / sizeof(stkalign_t)];
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/**
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* IRQ prologue code, inserted at the start of all IRQ handlers enabled to
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* invoke system APIs.
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*/
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#define PORT_IRQ_PROLOGUE()
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/**
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* IRQ epilogue code, inserted at the end of all IRQ handlers enabled to
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* invoke system APIs.
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*/
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#define PORT_IRQ_EPILOGUE()
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/**
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* IRQ handler function declaration.
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* @note @p id can be a function name or a vector number depending on the
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* port implementation.
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*/
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#define PORT_IRQ_HANDLER(id) void id(void)
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#ifdef __cplusplus
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extern "C" {
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#endif
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void port_init(void);
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void port_lock(void);
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void port_unlock(void);
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void port_lock_from_isr(void);
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void port_unlock_from_isr(void);
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void port_disable(void);
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void port_suspend(void);
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void port_enable(void);
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void port_wait_for_interrupt(void);
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void port_halt(void);
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void port_switch(Thread *otp, Thread *ntp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _CHCORE_H_ */
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/** @} */
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