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Added getpid system call

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This commit is contained in:
Justin C. Miller
2019-02-07 17:52:57 -08:00
parent 8c32471e0d
commit 8e85ae5318
4 changed files with 36 additions and 17 deletions
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28
src/kernel/syscall.cpp
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@@ -40,20 +40,23 @@ syscall_dispatch(uintptr_t return_rsp, cpu_state &regs)
console *cons = console::get();
syscall call = static_cast<syscall>(regs.rax);
auto &s = scheduler::get();
auto *p = s.current();
switch (call) {
case syscall::noop:
break;
case syscall::debug:
cons->set_color(11);
cons->printf("\nReceived DEBUG syscall\n");
cons->printf("\nProcess %u: Received DEBUG syscall\n", p->pid);
cons->set_color();
print_regs(regs);
break;
case syscall::message:
cons->set_color(11);
cons->printf("\nReceived MESSAGE syscall\n");
cons->printf("\nProcess %u: Received MESSAGE syscall\n", p->pid);
cons->set_color();
break;
@@ -64,7 +67,7 @@ syscall_dispatch(uintptr_t return_rsp, cpu_state &regs)
auto &s = scheduler::get();
auto *p = s.current();
p->wait_on_signal(-1ull);
cons->printf("\nReceived PAUSE syscall\n");
cons->printf("\nProcess %u: Received PAUSE syscall\n", p->pid);
return_rsp = s.schedule(return_rsp);
cons->set_color();
}
@@ -73,16 +76,23 @@ syscall_dispatch(uintptr_t return_rsp, cpu_state &regs)
case syscall::sleep:
{
cons->set_color(11);
auto &s = scheduler::get();
auto *p = s.current();
p->wait_on_time(regs.rbx);
cons->printf("\nReceived SLEEP syscall\n");
return_rsp = s.schedule(return_rsp);
cons->printf("\nProcess %u: Received SLEEP syscall\n", p->pid);
cons->printf("Sleeping until %lu\n", regs.rbx);
cons->set_color();
p->wait_on_time(regs.rbx);
return_rsp = s.schedule(return_rsp);
}
break;
case syscall::getpid:
cons->set_color(11);
cons->printf("\nProcess %u: Received GETPID syscall\n", p->pid);
cons->set_color();
regs.rax = p->pid;
break;
default:
cons->set_color(9);
cons->printf("\nReceived unknown syscall: %02x\n", call);