diff options
Diffstat (limited to 'nuttx/arch/x86/src/i486/up_stackframe.c')
| -rw-r--r-- | nuttx/arch/x86/src/i486/up_stackframe.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/nuttx/arch/x86/src/i486/up_stackframe.c b/nuttx/arch/x86/src/i486/up_stackframe.c index f2ab91f95..d8884b790 100644 --- a/nuttx/arch/x86/src/i486/up_stackframe.c +++ b/nuttx/arch/x86/src/i486/up_stackframe.c @@ -45,6 +45,7 @@ #include <debug.h> #include <nuttx/arch.h> +#include <arch/irq.h> #include "up_internal.h" @@ -126,9 +127,15 @@ FAR void *up_stack_frame(FAR struct tcb_s *tcb, size_t frame_size) /* Save the adjusted stack values in the struct tcb_s */ - topaddr = (uintptr_t)tcb->adj_stack_ptr - frame_size; - tcb->adj_stack_ptr = (FAR void *)topaddr; - tcb->adj_stack_size -= frame_size; + topaddr = (uintptr_t)tcb->adj_stack_ptr - frame_size; + tcb->adj_stack_ptr = (FAR void *)topaddr; + tcb->adj_stack_size -= frame_size; + + /* Reset the initial stack pointer */ + + tcb->xcp.regs[REG_SP] = (uint32_t)tcb->adj_stack_ptr; + + /* And return the pointer to the allocated region */ return (FAR void *)(topaddr + sizeof(uint32_t)); } |