1 /* 2 * Copyright (c) 2016, Texas Instruments Incorporated 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * * Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * * Neither the name of Texas Instruments Incorporated nor the names of 17 * its contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 /* 33 * ======== TaskSupport.xdc ======== 34 * 35 */ 36 37 package ti.sysbios.family.c7x; 38 39 import xdc.runtime.Assert; 40 41 /*! 42 * ======== TaskSupport ======== 43 * C71 Task Support Module. 44 */ 45 module TaskSupport inherits ti.sysbios.interfaces.ITaskSupport 46 { 47 /*! 48 * Default Task stack size. 49 * 50 * The C7x CPU uses 2 stacks during interrupt processing. The CPU 51 * automatically saves some context to the memory block to which the 52 * TCSP register points, and SW will save some context to the Task's 53 * SW stack during interrupt processing. In order to keep specification 54 * and processing compatible across different CPU targets, SYS/BIOS 55 * uses a single stack memory block for both of these stacks (although 56 * there isn't really any stacking with TCSP since there is a distinct 57 * block for each Task which is used only once). Due to HW alignment 58 * and size requirements for the TCSP block, there is a strict minimum 59 * of 16KB for the Task stack. 60 */ 61 override readonly config SizeT defaultStackSize = 0x4000; 62 63 /*! 64 * Required stack alignment (in MAUs). 65 * 66 * The C7x CPU TCSP register requires this alignment (see 67 * {@link #defaultStackSize} for further information). 68 */ 69 override readonly config UInt stackAlignment = 0x2000; 70 71 /*! Asserted in TaskSupport_start */ 72 config Assert.Id A_stackSizeTooSmall = { 73 msg: "A_stackSizeTooSmall: Task stack size must be >= 16KB." 74 }; 75 }