mirror of
https://github.com/espressif/binutils-gdb.git
synced 2025-07-29 12:53:43 +08:00
e8f20a28b1
We use the program argv to both find the program to run (argv[0]) and to hold the arguments to the program. Most of the time this is fine, but if we want to let programs specify argv[0] independently (which is possible in standard *NIX programs), this double duty doesn't work. So let's split the path to the program to run out into a separate field by itself. This simplifies the various sim_open funcs too. By itself, this code is more of a logical cleanup than something that is super useful. But it will open up customization of argv[0] in a follow up commit. Split the changes to make it easier to review.
= OVERVIEW = The Synacor Challenge is a fun programming exercise with a number of puzzles built into it. You can find more details about it here: https://challenge.synacor.com/ The first puzzle is writing an interpreter for their custom ISA. This is a simulator for that custom CPU. The CPU is quite basic: it's 16-bit with only 8 registers and a limited set of instructions. This means the port will never grow new features. See README.arch-spec for more details. Implementing it here ends up being quite useful: it acts as a simple constrained "real world" example for people who want to implement a new simulator for their own architecture. We demonstrate all the basic fundamentals (registers, memory, branches, and tracing) that all ports should have.