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Crt0
| Program execution |
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| General concepts |
| Types of code |
| Compilation strategies |
| Notable runtimes |
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| Notable compilers & toolchains |
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crt0 (also known as c0) is a set of execution startup routines linked into a C program that performs any initialization work required before calling the program's main function. After the main function completes the control returns to crt0, which calls the library function exit(0) to terminate the process.
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