A trampoline in code is something you jump off of - essentially, a redirection snippet. You jump into it and it bounces you somewhere else.
In this case, the use is documented where it's implemented: https://github.com/raspberrypi/pico-bootrom/blob/master/boot... . It's a custom wrapper to call ROM functions. When the ROM function returns, the trampoline executes a debugger breakpoint. This is done so that the debugger can call into ROM easily without needing to set a hardware breakpoint.
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A trampoline in code is something you jump off of - essentially, a redirection snippet. You jump into it and it bounces you somewhere else.
In this case, the use is documented where it's implemented: https://github.com/raspberrypi/pico-bootrom/blob/master/boot... . It's a custom wrapper to call ROM functions. When the ROM function returns, the trampoline executes a debugger breakpoint. This is done so that the debugger can call into ROM easily without needing to set a hardware breakpoint.