1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** ThreadX Component */
16 /** */
17 /** Thread */
18 /** */
19 /**************************************************************************/
20 /**************************************************************************/
21
22 #define TX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "tx_api.h"
28 #include "tx_thread.h"
29
30 /**************************************************************************/
31 /* */
32 /* FUNCTION RELEASE */
33 /* */
34 /* _tx_thread_fp_enable ARMv8-A */
35 /* 6.1.10 */
36 /* AUTHOR */
37 /* */
38 /* William E. Lamie, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* This function enabled the FP for the currently executing thread. */
43 /* */
44 /* INPUT */
45 /* */
46 /* None */
47 /* */
48 /* OUTPUT */
49 /* */
50 /* None */
51 /* */
52 /* CALLS */
53 /* */
54 /* None */
55 /* */
56 /* CALLED BY */
57 /* */
58 /* Application Code */
59 /* */
60 /* RELEASE HISTORY */
61 /* */
62 /* DATE NAME DESCRIPTION */
63 /* */
64 /* 09-30-2020 William E. Lamie Initial Version 6.1 */
65 /* 01-31-2022 Andres Mlinar Updated comments, */
66 /* resulting in version 6.1.10 */
67 /* */
68 /**************************************************************************/
_tx_thread_fp_enable(VOID)69 VOID _tx_thread_fp_enable(VOID)
70 {
71
72 TX_THREAD *thread_ptr;
73 ULONG system_state;
74
75
76 /* Pickup the current thread pointer. */
77 TX_THREAD_GET_CURRENT(thread_ptr);
78
79 /* Get the system state. */
80 system_state = TX_THREAD_GET_SYSTEM_STATE();
81
82 /* Make sure it is not NULL. */
83 if (thread_ptr != TX_NULL)
84 {
85
86 /* Thread is running... make sure the call is from the thread context. */
87 if (system_state == 0)
88 {
89
90 /* Yes, now setup the FP enable flag in the TX_THREAD structure. */
91 thread_ptr -> tx_thread_fp_enable = TX_TRUE;
92 }
93 }
94 }
95
96
