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dev:crosscompiler:backend_arm:code_generator [2019/11/15 16:35] – [Stackframe] ursgraf | dev:crosscompiler:backend_arm:code_generator [2019/11/17 18:19] – [Fixup] ursgraf | ||
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\\ | \\ | ||
===== Exception Stackframe ===== | ===== Exception Stackframe ===== | ||
- | In case of an exception | + | In case of an exception |
- | FPR's need no saving, as they are normally | + | EXTR's need no saving, as they are not allowed to be used in exceptions. If an exception method calls a method where EXTR are used (e.g. in an interrupt handler or in a decrementer subclass) you have to use '' |
- | [{{ .:exceptionstackframe.png?250&direct | //Stack frame for exception method//}}] | + | [{{ :dev: |
- | Optimization: | + | Optimization: |
===== Method Call ===== | ===== Method Call ===== | ||
==== Parameter Passing ==== | ==== Parameter Passing ==== | ||
- | All parameters must be copied in the appropriate registers, see [[.: | + | All parameters must be copied in the appropriate registers, see [[.: |
==== Return Value ==== | ==== Return Value ==== | ||
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* Addresses of class variables | * Addresses of class variables | ||
* Addresses of constants (floats, strings, type descriptors) | * Addresses of constants (floats, strings, type descriptors) | ||
- | Such addresses must be loaded with the aid of an auxiliary | + | Such addresses must be loaded with the aid of an auxiliary |
===== Accessing the Hardware ===== | ===== Accessing the Hardware ===== |