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When calling function with argument of size more than 8 bytes fails with an error "That operation is not available on integers of more than 8 bytes.". avr-gdb considers only 8 bytes (sizeof(long long)) in case of passing the argument in registers. When the argument is of size more than 8 byte then the utility function to extract bytes failed with the above error. Attached a patch fix this issue. This patch includes the fix discussed here: https://sourceware.org/ml/gdb-patches/2016-02/msg00884.html (Both fixes are in same function and the earlier is not committed) Ran the tests for avr-gdb with internal simulators. No new regressions. If ok, could someone commit please? I do not have commit access. Regards, Pitchumani gdb/ChangeLog 2016-03-01 Pitchumani Sivanupandi<pitchumani.s@atmel.com> * avr-tdep.c (AVR_LAST_ARG_REGNUM): Define. (avr_push_dummy_call): Correct last needed argument register. Write MSB of argument into register and subsequent bytes into other registers in decreasing order.
Attachment:
fix-argument-passing.patch
Description: Text document
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