]> git.sur5r.net Git - freertos/blob - FreeRTOS/Source/portable/Paradigm/Tern_EE/small/portasm.h
Replace standard types with stdint.h types.
[freertos] / FreeRTOS / Source / portable / Paradigm / Tern_EE / small / portasm.h
1 /*\r
2     FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd. \r
3     All rights reserved\r
4 \r
5     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
6 \r
7     ***************************************************************************\r
8      *                                                                       *\r
9      *    FreeRTOS provides completely free yet professionally developed,    *\r
10      *    robust, strictly quality controlled, supported, and cross          *\r
11      *    platform software that has become a de facto standard.             *\r
12      *                                                                       *\r
13      *    Help yourself get started quickly and support the FreeRTOS         *\r
14      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
15      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
16      *                                                                       *\r
17      *    Thank you!                                                         *\r
18      *                                                                       *\r
19     ***************************************************************************\r
20 \r
21     This file is part of the FreeRTOS distribution.\r
22 \r
23     FreeRTOS is free software; you can redistribute it and/or modify it under\r
24     the terms of the GNU General Public License (version 2) as published by the\r
25     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
26 \r
27     >>! NOTE: The modification to the GPL is included to allow you to distribute\r
28     >>! a combined work that includes FreeRTOS without being obliged to provide\r
29     >>! the source code for proprietary components outside of the FreeRTOS\r
30     >>! kernel.\r
31 \r
32     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
33     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
34     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
35     link: http://www.freertos.org/a00114.html\r
36 \r
37     1 tab == 4 spaces!\r
38 \r
39     ***************************************************************************\r
40      *                                                                       *\r
41      *    Having a problem?  Start by reading the FAQ "My application does   *\r
42      *    not run, what could be wrong?"                                     *\r
43      *                                                                       *\r
44      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
45      *                                                                       *\r
46     ***************************************************************************\r
47 \r
48     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
49     license and Real Time Engineers Ltd. contact details.\r
50 \r
51     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
52     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
53     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
54 \r
55     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
56     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
57     licenses offer ticketed support, indemnification and middleware.\r
58 \r
59     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
60     engineered and independently SIL3 certified version for use in safety and\r
61     mission critical applications that require provable dependability.\r
62 \r
63     1 tab == 4 spaces!\r
64 */\r
65 \r
66 #ifndef PORT_ASM_H\r
67 #define PORT_ASM_H\r
68 \r
69 typedef void TCB_t;\r
70 extern volatile TCB_t * volatile pxCurrentTCB;\r
71 extern void vTaskSwitchContext( void );\r
72 \r
73 /*\r
74  * Saves the stack pointer for one task into its TCB, calls\r
75  * vTaskSwitchContext() to update the TCB being used, then restores the stack\r
76  * from the new TCB read to run the task.\r
77  */\r
78 void portEND_SWITCHING_ISR( void );\r
79 \r
80 /*\r
81  * Load the stack pointer from the TCB of the task which is going to be first\r
82  * to execute.  Then force an IRET so the registers and IP are popped off the\r
83  * stack.\r
84  */\r
85 void portFIRST_CONTEXT( void );\r
86 \r
87 #define portEND_SWITCHING_ISR()                                                                                 \\r
88                                                         asm { mov       bx, [pxCurrentTCB]                      }   \\r
89                             asm { mov   word ptr [bx], sp                       }       \\r
90                                                         asm { call  far ptr vTaskSwitchContext  }       \\r
91                                                         asm { mov       bx, [pxCurrentTCB]                      }       \\r
92                                                         asm { mov       sp, [bx]                                        }\r
93 \r
94 #define portFIRST_CONTEXT()                                                                                     \\r
95                                                         asm { mov       bx, [pxCurrentTCB]                      }       \\r
96                                                         asm { mov       sp, [bx]                                        }       \\r
97                                                         asm { pop       bp                                                      }       \\r
98                                                         asm { pop       di                                                      }       \\r
99                                                         asm { pop       si                                                      }       \\r
100                                                         asm { pop       ds                                                      }       \\r
101                                                         asm { pop       es                                                      }       \\r
102                                                         asm { pop       dx                                                      }       \\r
103                                                         asm { pop       cx                                                      }       \\r
104                                                         asm { pop       bx                                                      }       \\r
105                                                         asm { pop       ax                                                      }       \\r
106                                                         asm { iret                                                              }\r
107 \r
108 \r
109 #endif\r
110 \r