message

[sbcl.git] / src / runtime / interrupt.c

diff --git a/src/runtime/interrupt.c b/src/runtime/interrupt.c
index 1dcc462..65f50bf 100644 (file)
--- a/src/runtime/interrupt.c
+++ b/src/runtime/interrupt.c
@@ -161,7 +161,7 @@ void reset_signal_mask ()
 void 
 build_fake_control_stack_frames(struct thread *th,os_context_t *context)
 {
-#ifndef LISP_FEATURE_X86
+#ifndef LISP_FEATURE_C_STACK_IS_CONTROL_STACK
     
     lispobj oldcont;
 
@@ -364,7 +364,7 @@ interrupt_handle_now(int signal, siginfo_t *info, void *void_context)
 {
     os_context_t *context = (os_context_t*)void_context;
     struct thread *thread=arch_os_get_current_thread();
-#ifndef LISP_FEATURE_X86
+#if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
     boolean were_in_lisp;
 #endif
     union interrupt_handler handler;
@@ -381,7 +381,7 @@ interrupt_handle_now(int signal, siginfo_t *info, void *void_context)
        return;
     }
     
-#ifndef LISP_FEATURE_X86
+#if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
     were_in_lisp = !foreign_function_call_active;
     if (were_in_lisp)
 #endif
@@ -440,7 +440,7 @@ interrupt_handle_now(int signal, siginfo_t *info, void *void_context)
         (*handler.c)(signal, info, void_context);
     }
 
-#ifndef LISP_FEATURE_X86
+#if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
     if (were_in_lisp)
 #endif
     {
@@ -481,7 +481,7 @@ maybe_defer_handler(void *handler, struct interrupt_data *data,
      * actually use its argument for anything on x86, so this branch
      * may succeed even when context is null (gencgc alloc()) */
     if (
-#ifndef LISP_FEATURE_X86
+#if !defined(LISP_FEATURE_X86) && !defined(LISP_FEATURE_X86_64)
        (!foreign_function_call_active) &&
 #endif
        arch_pseudo_atomic_atomic(context)) {
@@ -670,6 +670,32 @@ void arrange_return_to_lisp_function(os_context_t *context, lispobj function)
     *(sp-2)=*os_context_register_addr(context,reg_EBP);
     *(sp-1)=*os_context_pc_addr(context);
 
+#elif defined(LISP_FEATURE_X86_64)
+    u64 *sp=(u64 *)*os_context_register_addr(context,reg_RSP);
+    *(sp-19) = post_signal_tramp;  /* return address for call_into_lisp */
+
+    *(sp-18)=*os_context_register_addr(context,reg_R15);
+    *(sp-17)=*os_context_register_addr(context,reg_R14);
+    *(sp-16)=*os_context_register_addr(context,reg_R13);
+    *(sp-15)=*os_context_register_addr(context,reg_R12);
+    *(sp-14)=*os_context_register_addr(context,reg_R11);
+    *(sp-13)=*os_context_register_addr(context,reg_R10);
+    *(sp-12)=*os_context_register_addr(context,reg_R9);
+    *(sp-11)=*os_context_register_addr(context,reg_R8);
+    *(sp-10)=*os_context_register_addr(context,reg_RDI);
+    *(sp-9)=*os_context_register_addr(context,reg_RSI);
+    *(sp-8)=*os_context_register_addr(context,reg_RSP)-16;
+    *(sp-7)=0;
+    *(sp-6)=*os_context_register_addr(context,reg_RBX);
+    *(sp-5)=*os_context_register_addr(context,reg_RDX);
+    *(sp-4)=*os_context_register_addr(context,reg_RCX);
+    *(sp-3)=*os_context_register_addr(context,reg_RAX);
+    *(sp-2)=*os_context_register_addr(context,reg_RBP);
+    *(sp-1)=*os_context_pc_addr(context);
+
+    *os_context_register_addr(context,reg_RDI) = function; /* function */
+    *os_context_register_addr(context,reg_RSI) = 0;        /* arg. array */
+    *os_context_register_addr(context,reg_RDX) = 0;        /* no. args */
 #else 
     struct thread *th=arch_os_get_current_thread();
     build_fake_control_stack_frames(th,context);
@@ -684,6 +710,11 @@ void arrange_return_to_lisp_function(os_context_t *context, lispobj function)
 #else
     *os_context_register_addr(context,reg_ESP) = sp-14;
 #endif
+#elif defined(LISP_FEATURE_X86_64)
+    *os_context_pc_addr(context) = call_into_lisp;
+    *os_context_register_addr(context,reg_RCX) = 0; 
+    *os_context_register_addr(context,reg_RBP) = sp-2;
+    *os_context_register_addr(context,reg_RSP) = sp-19;
 #else
     /* this much of the calling convention is common to all
        non-x86 ports */
@@ -720,11 +751,20 @@ void thread_exit_handler(int num, siginfo_t *info, void *v_context)
 {   /* called when a child thread exits */
     mark_dead_threads();
 }
-
        
 #endif
 
-boolean handle_control_stack_guard_triggered(os_context_t *context,void *addr){
+/* KLUDGE: Theoretically the approach we use for undefined alien
+ * variables should work for functions as well, but on PPC/Darwin
+ * we get bus error at bogus addresses instead, hence this workaround,
+ * that has the added benefit of automatically discriminating between
+ * functions and variables. 
+ */
+void undefined_alien_function() {
+    funcall0(SymbolFunction(UNDEFINED_ALIEN_FUNCTION_ERROR));
+}
+
+boolean handle_guard_page_triggered(os_context_t *context,void *addr){
     struct thread *th=arch_os_get_current_thread();
     
     /* note the os_context hackery here.  When the signal handler returns, 
@@ -752,6 +792,12 @@ boolean handle_control_stack_guard_triggered(os_context_t *context,void *addr){
         protect_control_stack_return_guard_page(th->pid,0);
         return 1;
     }
+    else if (addr >= undefined_alien_address &&
+            addr < undefined_alien_address + os_vm_page_size) {
+       arrange_return_to_lisp_function
+          (context, SymbolFunction(UNDEFINED_ALIEN_VARIABLE_ERROR));
+       return 1;
+    }
     else return 0;
 }