arch/sim: add up_getusrsp for sim

Signed-off-by: zhangyuan21 <[email protected]>

Author: zhangyuan21

arch/sim/src/sim/sim_registerdump.c

@@ -32,6 +32,16 @@
  * Public Functions
  ****************************************************************************/
 
+/****************************************************************************
+ * Name: up_getusrsp
+ ****************************************************************************/
+
+uintptr_t up_getusrsp(void *regs)
+{
+  xcpt_reg_t *ptr = regs;
+  return ptr[JB_SP];
+}
+
 /****************************************************************************
  * Name: up_dump_register
  ****************************************************************************/