diff options
Diffstat (limited to 'ports/linux/gnu/src/tx_thread_stack_build.c')
| -rw-r--r-- | ports/linux/gnu/src/tx_thread_stack_build.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/ports/linux/gnu/src/tx_thread_stack_build.c b/ports/linux/gnu/src/tx_thread_stack_build.c index cdadba6c..102ded32 100644 --- a/ports/linux/gnu/src/tx_thread_stack_build.c +++ b/ports/linux/gnu/src/tx_thread_stack_build.c @@ -9,6 +9,8 @@ * SPDX-License-Identifier: MIT **************************************************************************/ +// Portions of this file were generated with AI assistance. + /**************************************************************************/ /**************************************************************************/ @@ -79,6 +81,7 @@ void *_tx_linux_thread_entry(void *ptr); /**************************************************************************/ VOID _tx_thread_stack_build(TX_THREAD *thread_ptr, VOID (*function_ptr)(VOID)) { +ALIGN_TYPE fake_stack_ptr; struct sched_param sp; (VOID)function_ptr; @@ -118,8 +121,13 @@ struct sched_param sp; tx_interrupt_control nesting. */ thread_ptr -> tx_thread_linux_int_disabled_flag = 0; - /* Setup a fake thread stack pointer. */ - thread_ptr -> tx_thread_stack_ptr = (VOID *) (((CHAR *) thread_ptr -> tx_thread_stack_end) - 8); + /* Setup a fake thread stack pointer. The stack end points at the last byte of the + thread's stack area and is therefore not necessarily aligned, so round the result + down to a ULONG boundary. This pointer is dereferenced as a ULONG below and is + also the starting value of the stack checking logic's highest used pointer. */ + fake_stack_ptr = (ALIGN_TYPE) ((VOID *) (((CHAR *) thread_ptr -> tx_thread_stack_end) - 8)); + fake_stack_ptr = fake_stack_ptr & (~((ALIGN_TYPE) (sizeof(ULONG) - 1))); + thread_ptr -> tx_thread_stack_ptr = (VOID *) ((ALIGN_TYPE) fake_stack_ptr); /* Clear the first word of the stack. */ *(((ULONG *) thread_ptr -> tx_thread_stack_ptr) - 1) = 0; |