I'am trying to get the disassembling code from my arduino Sketch. I know that exist the avr-objdump for atmel previous microcontroller in Arduino UNO. Does exist any Library with the same functionality for RA4M1 Renesas Chip?
Did you try asking the Renesas Forum? Forum - RA MCU - Renesas Engineering Community
arm-none-eabi-objdump
It should be someplace like
%LOCALAPPDATA%\Arduino15\packages\arduino\tools\arm-none-eabi-gcc\7-2017q4\bin\arm-none-eabi-objdump.exe
PS: "disassembling" "dissembling" is something completely different 
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