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This call is the main interface to execute an ELF file. It is used by the Shell application to execute an ELF program (in this case Z80 relocatable code, loaded into any available space of RAM and executed). Any code can execute an Elf program, from anywhere.
If the program has no need of arguments, simply let CDE point to a null-terminator (0).
Arguments passing to ELF program is performed by this call. Arguments are pushed to the stack from right to left according SDCC convention.
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