diff options
| author | Xiuwen Cai <[email protected]> | 2023-05-12 10:13:42 +0800 |
|---|---|---|
| committer | GitHub <[email protected]> | 2023-05-12 10:13:42 +0800 |
| commit | 6b8ece0ff28fb0160a2fdf51c09df09d587f4575 (patch) | |
| tree | 7f1f6ba9a727d43831eedd020ea50d027c1053c8 /common_smp/src | |
| parent | 6d9f25fac9d091a097c70f9cbff0e50252fde52a (diff) | |
Add random number stack filling option. (#257)
Co-authored-by: TiejunZhou <[email protected]>
Diffstat (limited to 'common_smp/src')
| -rw-r--r-- | common_smp/src/tx_initialize_kernel_enter.c | 11 | ||||
| -rw-r--r-- | common_smp/src/tx_thread_create.c | 17 |
2 files changed, 25 insertions, 3 deletions
diff --git a/common_smp/src/tx_initialize_kernel_enter.c b/common_smp/src/tx_initialize_kernel_enter.c index 4f57da02..b35981b8 100644 --- a/common_smp/src/tx_initialize_kernel_enter.c +++ b/common_smp/src/tx_initialize_kernel_enter.c @@ -47,7 +47,7 @@ TX_SAFETY_CRITICAL_EXCEPTION_HANDLER /* FUNCTION RELEASE */ /* */ /* _tx_initialize_kernel_enter PORTABLE SMP */ -/* 6.1 */ +/* 6.x */ /* AUTHOR */ /* */ /* William E. Lamie, Microsoft Corporation */ @@ -87,7 +87,11 @@ TX_SAFETY_CRITICAL_EXCEPTION_HANDLER /* */ /* DATE NAME DESCRIPTION */ /* */ -/* 09-30-2020 William E. Lamie Initial Version 6.1 */ +/* 09-30-2020 William E. Lamie Initial Version 6.1 */ +/* xx-xx-xxxx Xiuwen Cai Modified comment(s), */ +/* added random generator */ +/* initialization, */ +/* resulting in version 6.x */ /* */ /**************************************************************************/ VOID _tx_initialize_kernel_enter(VOID) @@ -134,6 +138,9 @@ ULONG other_core_status, i; later used to represent interrupt nesting. */ _tx_thread_system_state[0] = TX_INITIALIZE_IN_PROGRESS; + /* Optional random number generator initialization. */ + TX_INITIALIZE_RANDOM_GENERATOR_INITIALIZATION + /* Call the application provided initialization function. Pass the first available memory address to it. */ tx_application_define(_tx_initialize_unused_memory); diff --git a/common_smp/src/tx_thread_create.c b/common_smp/src/tx_thread_create.c index 2c799a9b..ffb37132 100644 --- a/common_smp/src/tx_thread_create.c +++ b/common_smp/src/tx_thread_create.c @@ -37,7 +37,7 @@ /* FUNCTION RELEASE */ /* */ /* _tx_thread_create PORTABLE SMP */ -/* 6.2.0 */ +/* 6.x */ /* AUTHOR */ /* */ /* William E. Lamie, Microsoft Corporation */ @@ -89,6 +89,10 @@ /* restore interrupts at end */ /* of if block, */ /* resulting in version 6.2.0 */ +/* 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, @@ -110,6 +114,17 @@ ALIGN_TYPE updated_stack_start; #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 |