// Return execution data.
int sys_getexecdata(struct syscall syscall)
{
task_t* proc = scheduler_getCurrentTask();
switch(syscall.params[0])
{
case 0: return proc->argc;;
case 1: return (int)proc->argv;;
case 2: return (int)proc->environ;;
}
return NULL;
}
// Execute a command
// Yes, this is only a bunch of hardcoded crap
static void executeCommand(char *command, int argc, char **argv)
{
if(strcmp(command, "reboot") == 0) reboot();
else if(strcmp(command, "clear") == 0) printf("\e[H\e[2J");
else if(strcmp(command, "pid") == 0)
{
task_t* proc = scheduler_getCurrentTask();
if(proc != NULL)
printf("procnum: %d\n", proc->pid);
}
else if(strcmp(command, "halt") == 0) halt();
else if(strcmp(command, "freeze") == 0) freeze();
else if(strcmp(command, "panic") == 0) panic("Test panic for debugging");
else if(strcmp(command, "kill") == 0) asm("mov %eax, 1; int 0x80;");
else if(strcmp(command, "triplefault") == 0)
{
struct vm_context *ctx = vm_new();
paging_apply(ctx);
}
else if(strcmp(command, "pagefault") == 0)
*((char *)vm_faultAddress) = 0;
else if(strcmp(command, "reload") == 0)
paging_apply(vm_kernelContext);
else if(strcmp(command, "rebuild") == 0)
{
vm_set_cache(vm_kernelContext, NULL);
paging_apply(vm_kernelContext);
}
else if(strcmp(command, "dump") == 0)
vm_dump(vm_currentContext);
else if (strcmp(command, "kb") == 0)
{
if (argc != 1)
{
printf("usage: kb <layoutname>\n");
return;
}
if (keyboard_setlayout(argv[0]) == -1)
{
printf("unknown layout\n");
return;
}
}
else
{
if(strlen(command) > 0 && command[0] != '#')
printf("error: command '%s' not found.\n", command);
}
}
static void intHandler(cpu_state_t* regs)
{
struct syscall syscall;
if (scheduler_getCurrentTask()->sys_call_conv == TASK_SYSCONV_LINUX)
{
// Linux syscall calling convention
syscall.num = regs->eax;
syscall.params[0] = regs->ebx;
syscall.params[1] = regs->ecx;
syscall.params[2] = regs->edx;
syscall.params[3] = regs->esi;
syscall.params[4] = regs->edi;
syscall.params[5] = (int)regs->ebp;
}
else
{
// Unix syscall calling convention
syscall.num = regs->eax;
syscall.params[0] = *((int *)regs->esp + sizeof(int));
syscall.params[1] = *((int *)regs->esp + sizeof(int) * 2);
syscall.params[2] = *((int *)regs->esp + sizeof(int) * 3);
syscall.params[3] = *((int *)regs->esp + sizeof(int) * 4);
syscall.params[4] = *((int *)regs->esp + sizeof(int) * 5);
syscall.params[5] = *((int *)regs->esp + sizeof(int) * 6);
}
syscall_t call = syscall_table[syscall.num];
if (syscall.num >= sizeof(syscall_table) / sizeof(syscall_t) || call == NULL)
{
log(LOG_INFO, "syscall: Invalid syscall %d\n", syscall.num);
syscall.num = -1;
return;
}
regs->eax = call(syscall);
}
