Yes.
Using Watchpoints:
watch – only breaks on write (and only if the value changes)
rwatch – breaks on read, and
awatch – breaks on read/write.
A more detailed brief from some internet sources:
watch
watch is gdb’s way of setting data breakpoints which will halt the execution of a program if memory changes at the specified location.
watch breakpoints can either be set on the variable name or any address location.
watch my_variable
watch *0x12345678
where 0x12345678 is a valid address.
rwatch
rwatch (read-watch) breakpoints break the execution of code when the program tries to read from a variable or memory location.
rwatch iWasAccessed
rwatch *0x12345678
where 0x12345678 is a valid address.
awatch
awatch or access watches break execution of the program if a variable or memory location is written to or read from. In summary, awatches are watches and rwatches all in one. It is a handy way of creating one breakpoint than two separate ones.
awatch *0x12345678
where 0x12345678 is a valid address.