mirror of
https://github.com/azure-rtos/threadx
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126 lines
4.9 KiB
C
126 lines
4.9 KiB
C
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/**************************************************************************/
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/* Copyright (c) Cadence Design Systems, Inc. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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/**************************************************************************/
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/* Xtensa-specific API for RTOS ports. */
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/**************************************************************************/
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#ifndef XTENSA_API_H
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#define XTENSA_API_H
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#include <xtensa/hal.h>
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#include "xtensa_context.h"
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/* Typedef for C-callable interrupt handler function */
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typedef void (*xt_handler)(void *);
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/* Typedef for C-callable exception handler function */
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typedef void (*xt_exc_handler)(XtExcFrame *);
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/*
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-------------------------------------------------------------------------------
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Call this function to set a handler for the specified exception.
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n - Exception number (type)
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f - Handler function address, NULL to uninstall handler.
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The handler will be passed a pointer to the exception frame, which is created
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on the stack of the thread that caused the exception.
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If the handler returns, the thread context will be restored and the faulting
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instruction will be retried. Any values in the exception frame that are
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modified by the handler will be restored as part of the context. For details
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of the exception frame structure see xtensa_context.h.
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-------------------------------------------------------------------------------
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*/
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extern xt_exc_handler xt_set_exception_handler(uint32_t n, xt_exc_handler f);
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/*
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-------------------------------------------------------------------------------
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Call this function to set a handler for the specified interrupt.
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n - Interrupt number.
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f - Handler function address, NULL to uninstall handler.
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arg - Argument to be passed to handler.
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-------------------------------------------------------------------------------
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*/
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extern xt_handler xt_set_interrupt_handler(uint32_t n, xt_handler f, void * arg);
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/*
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-------------------------------------------------------------------------------
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Call this function to enable the specified interrupt.
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intnum - Interrupt number to be enabled.
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Returns: Nothing.
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-------------------------------------------------------------------------------
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*/
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extern void xt_interrupt_enable(uint32_t intnum);
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/*
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-------------------------------------------------------------------------------
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Call this function to disable the specified interrupt.
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intnum - Interrupt number to be disabled.
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Returns: Nothing.
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-------------------------------------------------------------------------------
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*/
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extern void xt_interrupt_disable(uint32_t intnum);
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/*
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-------------------------------------------------------------------------------
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Call this function to trigger the specified (s/w) interrupt.
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intnum - Interrupt number to be triggered.
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Returns: Nothing.
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-------------------------------------------------------------------------------
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*/
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extern void xt_interrupt_trigger(uint32_t intnum);
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/*
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-------------------------------------------------------------------------------
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Call this function to clear the specified (s/w or edge-triggered)
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interrupt.
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intnum - Interrupt number to be cleared.
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Returns: Nothing.
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-------------------------------------------------------------------------------
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*/
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extern void xt_interrupt_clear(uint32_t intnum);
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#endif /* XTENSA_API_H */
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