Question: Using an example illustrate the difference between implementing the test_and_set operation in hardware as an indivisible operation and implementing it in software as a set

Using an example illustrate the difference between implementing the test_and_set operation in hardware as an indivisible operation and implementing it in software as a set of instructions. (Code for this instruction is in Figure 5.3)
boolean test-and-set (booiean *target) t boolean rv *target *target true return rv; Figure 5.3 The definition of the test-and-set C) instruction
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