feat: signal support (tested!)

[lunaix-os.git] / lunaix-os / kernel / signal.c

diff --git a/lunaix-os/kernel/signal.c b/lunaix-os/kernel/signal.c
index 4c0bb56ad27b307c1e1b44641d47e28db1b88799..49f1e534f6c65d06c4d0ba916847867e66cc491c 100644 (file)
--- a/lunaix-os/kernel/signal.c
+++ b/lunaix-os/kernel/signal.c
@@ -26,7 +26,7 @@ signal_dispatch()
     int sig_selected =
       31 - __builtin_clz(__current->sig_pending & ~__current->sig_mask);
 
     int sig_selected =
       31 - __builtin_clz(__current->sig_pending & ~__current->sig_mask);
 

-    __current->sig_pending = __current->sig_pending & ~(1 << sig_selected);
+    __current->sig_pending = __current->sig_pending & ~__SIGNAL(sig_selected);

 
     if (!__current->sig_handler[sig_selected] &&
         !default_handlers[sig_selected]) {
 
     if (!__current->sig_handler[sig_selected] &&
         !default_handlers[sig_selected]) {


@@ -34,7 +34,7 @@ signal_dispatch()
         return 0;
     }
 
         return 0;
     }
 

-    uintptr_t ustack = __current->ustack_top;
+    uintptr_t ustack = __current->ustack_top & ~0xf;

 
     if ((int)(ustack - USTACK_END) < (int)sizeof(struct proc_sig)) {
         // 用户栈没有空间存放信号上下文
 
     if ((int)(ustack - USTACK_END) < (int)sizeof(struct proc_sig)) {
         // 用户栈没有空间存放信号上下文


@@ -53,12 +53,15 @@ signal_dispatch()
         sig_ctx->signal_handler = default_handlers[sig_selected];
     }
 
         sig_ctx->signal_handler = default_handlers[sig_selected];
     }
 

+    __current->sig_mask |= __SIGNAL(sig_selected);
+

     return sig_ctx;
 }
 
 __DEFINE_LXSYSCALL1(int, sigreturn, struct proc_sig, *sig_ctx)
 {
     __current->intr_ctx = sig_ctx->prev_context;
     return sig_ctx;
 }
 
 __DEFINE_LXSYSCALL1(int, sigreturn, struct proc_sig, *sig_ctx)
 {
     __current->intr_ctx = sig_ctx->prev_context;

+    __current->sig_mask &= ~__SIGNAL(sig_ctx->sig_num);

     schedule();
 }
 
     schedule();
 }