Hi all, In my code, I found that the global interrupts is disabled after one function is called. By reading the assembly code I found that this function uses register 'r0' to save the global interrupts in the prologue and restore it in the end. One of the functions been called in this function modified the register 'r0' and caused this problem.
I wonder whether or 'r0' can be clobbered in functions. If so, why register 'r0' is used to save the global interrupts in that function. THX _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
