Analysis of information sources in references of the Wikipedia article "Interrupt" in English language version.
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In Cortex-M4 system, the interrupts and exceptions have the following properties: ... Generally, a single bit in a mask register is used to mask (disable) or unmask (enable) certain interrupt/exceptions to occur
NOTE Although the general concepts are the same, the terminology varies, so you need to be mindful when reading the respective manuals. For example, ARM uses exception as the more general term, with an interrupt being a type of exception.Intel, on the other hand, uses interrupt as the more general term, with an exception being a type of interrupt.
In Cortex-M4 system, the interrupts and exceptions have the following properties: ... Generally, a single bit in a mask register is used to mask (disable) or unmask (enable) certain interrupt/exceptions to occur
Then it's just a matter of cleaning up, running software interrupts, and getting back to regular work. The "regular work" may well have changed as a result of an interrupt (the handler could wake_up a process, for example), so the last thing that happens on return from an interrupt is a possible rescheduling of the processor.The concept of an interrupt is something that has expanded in scope over the years. The 80x86 family has only added to the confusion surrounding interrupts by introducing the int (software interrupt) instruction. Indeed different manufacturers have used terms like exceptions faults aborts traps and interrupts to describe the phenomena this chapter discusses. Unfortunately there is no clear consensus as to the exact meaning of these terms. Different authors adopt different terms to their own use.
Then it's just a matter of cleaning up, running software interrupts, and getting back to regular work. The "regular work" may well have changed as a result of an interrupt (the handler could wake_up a process, for example), so the last thing that happens on return from an interrupt is a possible rescheduling of the processor.The concept of an interrupt is something that has expanded in scope over the years. The 80x86 family has only added to the confusion surrounding interrupts by introducing the int (software interrupt) instruction. Indeed different manufacturers have used terms like exceptions faults aborts traps and interrupts to describe the phenomena this chapter discusses. Unfortunately there is no clear consensus as to the exact meaning of these terms. Different authors adopt different terms to their own use.