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authorSebastian Huber <sebastian.huber@embedded-brains.de>2021-03-03 09:23:20 +0100
committerSebastian Huber <sebastian.huber@embedded-brains.de>2021-03-05 06:58:33 +0100
commit524839568d8df72bb3d62d64cb1b927bc8dbbbf1 (patch)
tree1a448dc50f597a98e52f3fb13f705b34bb6ee9ad /cpukit/score/src/threadinitialize.c
parent1de00d685d4ad5af7c6b09711b34369dc7d31bae (diff)
downloadrtems-524839568d8df72bb3d62d64cb1b927bc8dbbbf1.tar.bz2
score: Ensure stack alignment requirement
Make sure that a user-provided stack size is the minimum size allocated for the stack. Make sure we meet the stack alignment requirement also for CPU ports with CPU_STACK_ALIGNMENT > CPU_HEAP_ALIGNMENT.
Diffstat (limited to 'cpukit/score/src/threadinitialize.c')
-rw-r--r--cpukit/score/src/threadinitialize.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/cpukit/score/src/threadinitialize.c b/cpukit/score/src/threadinitialize.c
index 3a331ed269..f11e35dcf3 100644
--- a/cpukit/score/src/threadinitialize.c
+++ b/cpukit/score/src/threadinitialize.c
@@ -107,6 +107,7 @@ static bool _Thread_Try_initialize(
size_t i;
char *stack_begin;
char *stack_end;
+ uintptr_t stack_align;
Scheduler_Node *scheduler_node;
#if defined(RTEMS_SMP)
Scheduler_Node *scheduler_node_for_index;
@@ -128,8 +129,12 @@ static bool _Thread_Try_initialize(
(char *) the_thread + add_on->source_offset;
}
+ /* Set up the properly aligned stack area begin and end */
stack_begin = config->stack_area;
stack_end = stack_begin + config->stack_size;
+ stack_align = CPU_STACK_ALIGNMENT;
+ stack_begin = (char *) RTEMS_ALIGN_UP( (uintptr_t) stack_begin, stack_align );
+ stack_end = (char *) RTEMS_ALIGN_DOWN( (uintptr_t) stack_end, stack_align );
/* Allocate floating-point context in stack area */
#if ( CPU_HARDWARE_FP == TRUE ) || ( CPU_SOFTWARE_FP == TRUE )