24 lines
1.1 KiB
Plaintext
24 lines
1.1 KiB
Plaintext
Based on some Q&A:
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Global Register Allocation: This is about placing in registers values
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that are used a lot in performance-critical code: local variables and
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method arguments if possible will be placed in the callee-saved
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registers that are returned by th arch-specific code in the function:
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mono_arch_get_global_int_regs().
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Stack Unwinding: is the process that happens during exception
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handling: when an exception is thrown in a called method and caught in
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a caller method, me need to put the processor registers in the state
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they were in the caller, at the point where the catch handler can run.
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This happens in the mono_handle_exception_internal() and
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mono_arch_find_jit_info(): see the other architectures implementations
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for ideas: they basically need to know how big was the stack allocated
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in each call frame and they need to restore the callee-save registers
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that were saved in the stack in the prolog in the called functions (
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during stack unwindong the epilog of a method is not executed and the
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register restoration needs to be done manually in the above
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functions).
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