dev:crosscompiler:backend_arm:exceptions
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| Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
| dev:crosscompiler:backend_arm:exceptions [2019/08/05 09:19] – [Terminology] ursgraf | dev:crosscompiler:backend_arm:exceptions [2019/08/05 09:32] – [ARM Exceptions] ursgraf | ||
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| ===== Terminology ===== | ===== Terminology ===== | ||
| * ARM Exception: Exception which are specific to the ARM architecture. | * ARM Exception: Exception which are specific to the ARM architecture. | ||
| - | * Interrupt: A certain type of a PPC exception, caused by asynchronous events by external hardware. | + | * Interrupt: A certain type of a ARM exception, caused by asynchronous events by external hardware. |
| * Java Exception: Exception defined in the Java language specification. All Java exceptions are extensions of the class // | * Java Exception: Exception defined in the Java language specification. All Java exceptions are extensions of the class // | ||
| Line 9: | Line 9: | ||
| ===== ARM Exceptions ===== | ===== ARM Exceptions ===== | ||
| + | Each ARM exception is caused by a synchronous or asynchronous event and generally causes the processor to switch its state and jump to its proper exception vector. | ||
| + | [{{ .: | ||
| + | Exception classes and their corresponding exception methods have to be specified in the configuration. Instances of these classes are never created and therefore the object constructors are defined as // | ||
| + | The code generator has to create a special exception stack frame.\\ | ||
| + | The ARM architecture reserves 4 bytes of memory at each exception vector. This is just enough to place a branching instruction there which causes the processor to jump to the right exception code. | ||
dev/crosscompiler/backend_arm/exceptions.txt · Last modified: 2019/11/17 18:24 by ursgraf
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