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[freertos] / FreeRTOS / Source / portable / IAR / MSP430 / portasm.h
1 /*\r
2  * FreeRTOS Kernel V10.3.0\r
3  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.\r
4  *\r
5  * Permission is hereby granted, free of charge, to any person obtaining a copy of\r
6  * this software and associated documentation files (the "Software"), to deal in\r
7  * the Software without restriction, including without limitation the rights to\r
8  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\r
9  * the Software, and to permit persons to whom the Software is furnished to do so,\r
10  * subject to the following conditions:\r
11  *\r
12  * The above copyright notice and this permission notice shall be included in all\r
13  * copies or substantial portions of the Software.\r
14  *\r
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\r
17  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\r
18  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
19  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
21  *\r
22  * http://www.FreeRTOS.org\r
23  * http://aws.amazon.com/freertos\r
24  *\r
25  * 1 tab == 4 spaces!\r
26  */\r
27 \r
28 #ifndef PORTASM_H\r
29 #define PORTASM_H\r
30 \r
31 portSAVE_CONTEXT macro\r
32 \r
33                 IMPORT pxCurrentTCB\r
34                 IMPORT usCriticalNesting\r
35 \r
36                 /* Save the remaining registers. */\r
37                 push    r4\r
38                 push    r5\r
39                 push    r6\r
40                 push    r7\r
41                 push    r8\r
42                 push    r9\r
43                 push    r10\r
44                 push    r11\r
45                 push    r12\r
46                 push    r13\r
47                 push    r14\r
48                 push    r15\r
49                 mov.w   &usCriticalNesting, r14\r
50                 push    r14\r
51                 mov.w   &pxCurrentTCB, r12\r
52                 mov.w   r1, 0(r12)\r
53                 endm\r
54 /*-----------------------------------------------------------*/\r
55                 \r
56 portRESTORE_CONTEXT macro\r
57                 mov.w   &pxCurrentTCB, r12\r
58                 mov.w   @r12, r1\r
59                 pop             r15\r
60                 mov.w   r15, &usCriticalNesting\r
61                 pop             r15\r
62                 pop             r14\r
63                 pop             r13\r
64                 pop             r12\r
65                 pop             r11\r
66                 pop             r10\r
67                 pop             r9\r
68                 pop             r8\r
69                 pop             r7\r
70                 pop             r6\r
71                 pop             r5\r
72                 pop             r4\r
73 \r
74                 /* The last thing on the stack will be the status register.\r
75         Ensure the power down bits are clear ready for the next\r
76         time this power down register is popped from the stack. */\r
77                 bic.w   #0xf0,0(SP)\r
78 \r
79                 reti\r
80                 endm\r
81 /*-----------------------------------------------------------*/\r
82 \r
83 #endif\r
84 \r