Add line info support. (#2286)

Add line info data to byte, which allows getting a backtrace info directly
from the engine. Snapshots are not supported.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

jerry-core/vm/vm.h

@@ -203,8 +203,10 @@ typedef enum
   VM_OC_FINALLY,                 /**< finally */
   VM_OC_CONTEXT_END,             /**< context end */
   VM_OC_JUMP_AND_EXIT_CONTEXT,   /**< jump and exit context */
-  VM_OC_BREAKPOINT_ENABLED,       /**< enabled breakpoint for debugger */
-  VM_OC_BREAKPOINT_DISABLED,      /**< disabled breakpoint for debugger */
+  VM_OC_BREAKPOINT_ENABLED,      /**< enabled breakpoint for debugger */
+  VM_OC_BREAKPOINT_DISABLED,     /**< disabled breakpoint for debugger */
+  VM_OC_RESOURCE_NAME,           /**< resource name of the current function */
+  VM_OC_LINE,                    /**< line number of the next statement */
 } vm_oc_types;
 
 /**
@@ -286,6 +288,8 @@ ecma_value_t vm_run (const ecma_compiled_code_t *bytecode_header_p, ecma_value_t
 bool vm_is_strict_mode (void);
 bool vm_is_direct_eval_form_call (void);
 
+ecma_value_t vm_get_backtrace (uint32_t max_depth);
+
 /**
  * @}
  * @}