refactor: elf parsing utility and exec related

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

diff --git a/lunaix-os/kernel/process/signal.c b/lunaix-os/kernel/process/signal.c
index 5d09d9b6efa59bb02df9faabb3d0c7111d5ce9d2..e8683a1b80f46ced290f989a8e60dc8c65712276 100644 (file)
--- a/lunaix-os/kernel/process/signal.c
+++ b/lunaix-os/kernel/process/signal.c
@@ -1,5 +1,3 @@
-#include <lunaix/lunistd.h>
-#include <lunaix/lxsignal.h>
 #include <lunaix/process.h>
 #include <lunaix/sched.h>
 #include <lunaix/signal.h>
@@ -7,6 +5,8 @@
 #include <lunaix/status.h>
 #include <lunaix/syscall.h>
 
+#include <klibc/string.h>
+
 extern struct scheduler sched_ctx; /* kernel/sched.c */
 
 void __USER__
@@ -17,12 +17,12 @@ default_sighandler_term(int signum)
 
 void* default_handlers[_SIG_NUM] = {
     // TODO: 添加默认handler
-    [_SIGINT] = default_sighandler_term,  [_SIGTERM] = default_sighandler_term,
-    [_SIGKILL] = default_sighandler_term, [_SIGSEGV] = default_sighandler_term,
     [_SIGINT] = default_sighandler_term,
+    [_SIGTERM] = default_sighandler_term,
+    [_SIGKILL] = default_sighandler_term,
+    [_SIGSEGV] = default_sighandler_term,
 };
 
-volatile isr_param __temp_save;
 // Referenced in kernel/asm/x86/interrupt.S
 void*
 signal_dispatch()
@@ -43,6 +43,10 @@ signal_dispatch()
         return 0;
     }
 
+    // TODO: SIG{INT|TERM|KILL|SEGV} should have highest priority.
+    //       Terminate the process right here if any of unmaskable signal is
+    //       set.
+
     if (!__current->sig_handler[sig_selected] &&
         !default_handlers[sig_selected]) {
         // 如果该信号没有handler，则忽略
@@ -79,7 +83,10 @@ signal_dispatch()
 
         解决办法就是先吧intr_ctx拷贝到一个静态分配的区域里，然后再注入到用户栈。
     */
-    __temp_save = __current->intr_ctx;
+    static volatile struct proc_sigstate __temp_save;
+    __temp_save.proc_regs = __current->intr_ctx;
+    memcpy(__temp_save.fxstate, __current->fxstate, 512);
+
     sig_ctx->prev_context = __temp_save;
 
     sig_ctx->sig_num = sig_selected;
@@ -138,7 +145,8 @@ send_single:
 
 __DEFINE_LXSYSCALL1(int, sigreturn, struct proc_sig, *sig_ctx)
 {
-    __current->intr_ctx = sig_ctx->prev_context;
+    memcpy(__current->fxstate, sig_ctx->prev_context.fxstate, 512);
+    __current->intr_ctx = sig_ctx->prev_context.proc_regs;
     __current->flags &= ~PROC_FINPAUSE;
     __SIGCLEAR(__current->sig_inprogress, sig_ctx->sig_num);
     schedule();