60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
#include <signal.h>
|
|
#include <logger.h>
|
|
#include <string.h>
|
|
#include <process.h>
|
|
#include <thread.h>
|
|
#include <kmalloc.h>
|
|
#include <interrupt.h>
|
|
#include <exec.h>
|
|
|
|
static inline
|
|
void _sighandler_wrapper(signal_handler_t handler)
|
|
{
|
|
handler();
|
|
asm volatile(
|
|
"mov x8, #10" ENDL
|
|
"svc 0"
|
|
::: "x8"
|
|
);
|
|
}
|
|
|
|
static inline
|
|
void _sigkill_default_handler()
|
|
{
|
|
thread_t *th = get_current();
|
|
th->status = THREAD_STATUS_ZOMBIE;
|
|
}
|
|
|
|
void run_signal(int32_t SIGNAL)
|
|
{
|
|
LOG("run_signal"); DEBUG_SIGNAL(SIGNAL);
|
|
process_t *process = get_current()->process;
|
|
process->current_signal = SIGNAL;
|
|
trapframe_t *regs = kmalloc(sizeof(trapframe_t));
|
|
memcpy(regs, process->regs, sizeof(trapframe_t));
|
|
|
|
if (!process->sighandlers[SIGNAL]) {
|
|
switch (SIGNAL) {
|
|
case SIGKILL:
|
|
_sigkill_default_handler();
|
|
break;
|
|
default:
|
|
LOG("No default handler for this signal"); DEBUG_SIGNAL(SIGNAL);
|
|
return;
|
|
}
|
|
}
|
|
|
|
*regs = (trapframe_t){
|
|
.x0 = (uint64_t)process->sighandlers[SIGNAL],
|
|
.elr_el1 = (uint64_t)_sighandler_wrapper,
|
|
.sp_el0 = ((uint64_t)process->sigstack + process->sigstack_size - 64),
|
|
};
|
|
|
|
disable_interrupt();
|
|
process->current_signal = 0x0;
|
|
process->sigstate[SIGNAL] = false;
|
|
user_exec(regs);
|
|
|
|
__builtin_unreachable();
|
|
}
|