os-workshop

same materials and sample source for RV32 OS projects
git clone http://frotz.net/git/os-workshop.git
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ex25-user.c (257B)

      1 // Copyright 2022, Brian Swetland <swetland@frotz.net>
      2 // Licensed under the Apache License, Version 2.0
      3 
      4 #include <hw/debug.h>
      5 
      6 void xputs(const char* s) {
      7 	while (*s) {
      8 		xputc(*s++);
      9 	}
     10 }
     11 
     12 void start(void) {
     13 	xprintf("Hello, User Mode!\n");
     14 	exit(42);
     15 }