Add random number stack filling option. (#257)

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

View File

@@ -39,7 +39,7 @@
/* FUNCTION RELEASE */
/* */
/* _txm_module_manager_thread_create PORTABLE C */
/* 6.2.1 */
/* 6.x */
/* AUTHOR */
/* */
/* Scott Larson, Microsoft Corporation */
@@ -94,6 +94,10 @@
/* 03-08-2023 Scott Larson Check module stack for */
/* overlap, */
/* resulting in version 6.2.1 */
/* xx-xx-xxxx Xiuwen Cai Modified comment(s), */
/* added option for random */
/* number stack filling, */
/* resulting in version 6.x */
/* */
/**************************************************************************/
UINT _txm_module_manager_thread_create(TX_THREAD *thread_ptr, CHAR *name_ptr,
@@ -272,6 +276,17 @@ ULONG i;
}
#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