diff options
| -rw-r--r-- | kernel/syscall.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/kernel/syscall.c b/kernel/syscall.c index f5dc56e..7a57353 100644 --- a/kernel/syscall.c +++ b/kernel/syscall.c @@ -13,16 +13,17 @@ #define ARG3(type, name) type name = (type)(current_pcb->regs->rdx) #define ARG4(type, name) type name = (type)(current_pcb->regs->rcx) +__attribute__((noreturn)) static int sys_exit(void) { ARG1(int, status); - (void)status; - // FIXME: schedule somthing else - while (1) - ; + current_pcb->exit_status = status; + pcb_zombify(current_pcb); + current_pcb = NULL; - return 1; + // call next process + dispatch(); } static int sys_write(void) @@ -56,13 +57,13 @@ static int sys_write(void) return nbytes; } +__attribute__((noreturn)) static int sys_poweroff(void) { // TODO: we should probably // kill all user processes // and then sync the fs acpi_shutdown(); - return 1; } static int sys_drm(void) @@ -138,14 +139,14 @@ void syscall_handler(struct cpu_regs *regs) num = current_pcb->regs->rax; current_pcb->regs->rax = 0; - // syscall number - // check for invalid syscall if (num >= N_SYSCALLS) { - // invalid syscall - // FIXME: kill user process - while (1) - ; + // kill process + current_pcb->exit_status = 1; + pcb_zombify(current_pcb); + current_pcb = NULL; + // call next process + dispatch(); } // run syscall handler @@ -156,4 +157,6 @@ void syscall_handler(struct cpu_regs *regs) // on failure, set rax if (ret) current_pcb->regs->rax = ret; + + // return to current pcb } |