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|Home > What is Semihosting? > SYS_ERRNO (0x13)|
Returns the value of the C library
errno variable associated with the host implementation of the semihosting SVCs.
errno variable can be set by a number of C library semihosted
errno is set or not, and to what
value, is entirely host-specific, except where the ISO C standard
defines the behavior.
There are no parameters. Register
R0 contains the value of the C