make objdump work

Script update based on latest version from Tasmota
* add support for all esp32 variants
* add "-C" : Decode (demangle) low-level symbol names into user-level C++ names.

Author: softhack007

pio-scripts/obj-dump.py

@@ -1,9 +1,24 @@
 # Little convenience script to get an object dump
+#   You may add "-S" to the objdump commandline (i.e. replace "-D -C " with "-d -S -C ") 
+#   to get source code intermixed with disassembly (SLOW !)
 
 Import('env')
 
 def obj_dump_after_elf(source, target, env):
+    platform = env.PioPlatform()
+    board = env.BoardConfig()
+    mcu = board.get("build.mcu", "esp32")
+
     print("Create firmware.asm")
-    env.Execute("xtensa-lx106-elf-objdump "+ "-D " + str(target[0]) + " > "+ "${PROGNAME}.asm")
-    
+    if mcu == "esp8266":
+        env.Execute("xtensa-lx106-elf-objdump "+ "-D -C " + str(target[0]) + " > "+ "$BUILD_DIR/${PROGNAME}.asm")
+    if mcu == "esp32":
+        env.Execute("xtensa-esp32-elf-objdump "+ "-D -C " + str(target[0]) + " > "+ "$BUILD_DIR/${PROGNAME}.asm")
+    if mcu == "esp32s2":
+        env.Execute("xtensa-esp32s2-elf-objdump "+ "-D -C " + str(target[0]) + " > "+ "$BUILD_DIR/${PROGNAME}.asm")
+    if mcu == "esp32s3":
+        env.Execute("xtensa-esp32s3-elf-objdump "+ "-D -C " + str(target[0]) + " > "+ "$BUILD_DIR/${PROGNAME}.asm")
+    if mcu == "esp32c3":
+        env.Execute("riscv32-esp-elf-objdump "+ "-D -C " + str(target[0]) + " > "+ "$BUILD_DIR/${PROGNAME}.asm")
+
 env.AddPostAction("$BUILD_DIR/${PROGNAME}.elf", [obj_dump_after_elf])

platformio.ini

@@ -115,6 +115,7 @@ extra_scripts =
   post:pio-scripts/strip-floats.py
   pre:pio-scripts/user_config_copy.py
   pre:pio-scripts/build_ui.py
+  ; post:pio-scripts/obj-dump.py  ;; convenience script to create a disassembly dump of the firmware (hardcore debugging)
 
 # ------------------------------------------------------------------------------
 # COMMON SETTINGS: