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#include "PL0_utils.h"
// entry point - must remain the only function in the file!
void PL0_main(void)
{
// If loading program to userspace and handling of svc are
// implemented correctly, this shall get printed
puts("Hello userspace!");
// if we're indeed in PL0, we should trigger the abort handler now,
// when trying to access memory we're not allowed to
puts("Attempting to meddle with kernel memory from userspace :d");
char first_kernel_byte[2];
first_kernel_byte[0] = *(char*) 0x0;
first_kernel_byte[1] = '\0';
puts(first_kernel_byte);
while (1)
{
char c = getchar();
if (c == '\r')
putchar('\n');
putchar(c);
}
}
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