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Add random number stack filling option. (#257)

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Co-authored-by: TiejunZhou <50469179+TiejunMS@users.noreply.github.com>
This commit is contained in:
Xiuwen Cai
2023-05-12 10:13:42 +08:00
committed by GitHub
parent 6d9f25fac9
commit 6b8ece0ff2
13 changed files with 179 additions and 12 deletions
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17
common/src/tx_thread_create.c
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@@ -36,7 +36,7 @@
/* FUNCTION RELEASE */
/* */
/* _tx_thread_create PORTABLE C */
/* 6.1.8 */
/* 6.x */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
@@ -88,6 +88,10 @@
/* supported TX_MISRA_ENABLE, */
/* 08-02-2021 Scott Larson Removed unneeded cast, */
/* resulting in version 6.1.8 */
/* xx-xx-xxxx Xiuwen Cai Modified comment(s), */
/* added option for random */
/* number stack filling, */
/* resulting in version 6.x */
/* */
/**************************************************************************/
UINT _tx_thread_create(TX_THREAD *thread_ptr, CHAR *name_ptr, VOID (*entry_function)(ULONG id), ULONG entry_input,
@@ -109,6 +113,17 @@ ALIGN_TYPE updated_stack_start;
#endif
#ifndef TX_DISABLE_STACK_FILLING
#if defined(TX_ENABLE_RANDOM_NUMBER_STACK_FILLING) && defined(TX_ENABLE_STACK_CHECKING)
/* Initialize the stack fill value to a 8-bit random value. */
thread_ptr -> tx_thread_stack_fill_value = ((ULONG) TX_RAND()) & 0xFFUL;
/* Duplicate the random value in each of the 4 bytes of the stack fill value. */
thread_ptr -> tx_thread_stack_fill_value = thread_ptr -> tx_thread_stack_fill_value |
(thread_ptr -> tx_thread_stack_fill_value << 8) |
(thread_ptr -> tx_thread_stack_fill_value << 16) |
(thread_ptr -> tx_thread_stack_fill_value << 24);
#endif
/* Set the thread stack to a pattern prior to creating the initial
stack frame. This pattern is used by the stack checking routines