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eval { step_1(); 1; } or handle_error_1();
eval { step_2(); 1; } or handle_error_2();
eval { step_3(); 1; } or handle_error_3();
eval { step_4(); 1; } or handle_error_4();

step_1() or handle_error_1();
step_2() or handle_error_2();
step_3() or handle_error_3();
step_4() or handle_error_4();

try {
 step_1();
...
} catch {
 handle_overall_error();
};