diff options
Diffstat (limited to 'nuttx/arch/avr/src/avr32/up_fullcontextrestore.S')
| -rwxr-xr-x | nuttx/arch/avr/src/avr32/up_fullcontextrestore.S | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/nuttx/arch/avr/src/avr32/up_fullcontextrestore.S b/nuttx/arch/avr/src/avr32/up_fullcontextrestore.S index c883c58c7..3d9972180 100755 --- a/nuttx/arch/avr/src/avr32/up_fullcontextrestore.S +++ b/nuttx/arch/avr/src/avr32/up_fullcontextrestore.S @@ -70,7 +70,10 @@ * pointer (hence, interrupts must be disabled), and (b) there is the
* very real possibility that the new stack pointer might overlap with
* the register save area and stack usage in this function might corrupt
- * the register save data before the state is restored.
+ * the register save data before the state is restored. It turns that
+ * an extra 3 words in the register save structure size will protect its
+ * contents (because that is the number of temporaries pushed onto the
+ * stack).
*
* Input Parameters:
* r12 = A pointer to the register save area of the thread to be restored.
|