btrace: Add type casting feature for saved variables

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

guider/guider.py

@@ -7,7 +7,7 @@
 __credits__ = "Peace Lee"
 __license__ = "GPLv2"
 __version__ = "3.9.8"
-__revision__ = "231207"
+__revision__ = "231210"
 __maintainer__ = "Peace Lee"
 __email__ = "[email protected]"
 __repository__ = "https://github.com/iipeace/guider"
@@ -34985,7 +34985,7 @@ def printHelp(force=False, isExit=True):
     rdmem    print specific memory or register [VAR|ADDR|REG:SIZE]
     repeat   call again repeatedly [CNT]
     ret      return specific value immediately [VAL]
-    save     save previous value [VAR]
+    save     save previous or specific or argument value [VAR:VAL:TYPE]
     setarg   change value for specific register [REG#VAR|VAL]
     setenv   change specific environment variable [VAR:VAR|VAL]
     setret   change return value [VAL:CMD]
@@ -35341,6 +35341,7 @@ def printHelp(force=False, isExit=True):
 
     - {5:1} {7:1} and run multiple commands when specific function calls return
         # {0:1} {1:1} {9:1} -c "write|getret:sleep:1\\$exec:ls\\$stop"
+        # {0:1} {1:1} {9:1} -c "write|getret:save:VAR1\\$rdmem:@VAR1"
 
     - {5:1} {7:1} and print resource usage for tasks
         # {0:1} {1:1} {9:1} -c "*loadData*|getret:proctop:a.out|proctop:a.out"
@@ -35386,9 +35387,11 @@ def printHelp(force=False, isExit=True):
     - {5:1} and print python contexts {4:1} {7:1}
         # {0:1} {1:1} {9:1} -c "write|print" -q PYSTACK
 
-    - {5:1} and save specific values to specific variables {4:1} {7:1}
-        # {0:1} {1:1} {9:1} -c "write|save:VAR1|print:VAR1|save:VAR2:123"
+    - {5:1} and save specific values to specific variables and handle them {4:1} {7:1}
+        # {0:1} {1:1} {9:1} -c "write|save:VAR1:123|print:VAR1"
         # {0:1} {1:1} {9:1} -c "write|save:ARG1:1:arg|print:VAR1"
+        # {0:1} {1:1} {9:1} -c "write|save:VAR1:1|save:VAR1:@VAR1:float|print:VAR1"
+        # {0:1} {1:1} {9:1} -c "write|getret|save:VAR1|print:VAR1"
 
     - {5:1} and print call contexts if only specific conditions are met {4:1} {7:1}
         # {0:1} {1:1} {9:1} -c "write|filter:2:EQ:4096"
@@ -83347,12 +83350,17 @@ def _getFunc():
                 cmdlist = cmdset[1].split(":")
                 var = cmdlist[0]
 
+                # set target data #
                 if len(cmdlist) == 1:
                     data = self.prevReturn
                 else:
                     data = cmdlist[1]
                     if not data:
                         data = self.prevReturn
+                    elif data.startswith("@") and len(data) > 1:
+                        vardata = self.retList.get(data[1:])
+                        if vardata:
+                            data = vardata
 
                     # convert type #
                     if len(cmdlist) == 3: