jos/lib/libmain.c

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2018-09-25 09:22:51 -07:00
// Called from entry.S to get us going.
// entry.S already took care of defining envs, pages, uvpd, and uvpt.
#include <inc/lib.h>
extern void umain(int argc, char **argv);
const volatile struct Env *thisenv;
const char *binaryname = "<unknown>";
void
libmain(int argc, char **argv)
{
// set thisenv to point at our Env structure in envs[].
// LAB 3: Your code here.
thisenv = 0;
// save the name of the program so that panic() can use it
if (argc > 0)
binaryname = argv[0];
// call user main routine
umain(argc, argv);
// exit gracefully
exit();
}