X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fruntime%2Finterrupt.h;h=3a6a51b5dee3e8ab77ed5517848a6aadbb25b340;hb=1d06300e09f767a38bbe6d5b38232ca334ab1913;hp=4f2b0978f6f5625bc4f9858903710c4c4e7bc4ec;hpb=cf507f95509a855a752b6f1771aa06877b8a3b30;p=sbcl.git

diff --git a/src/runtime/interrupt.h b/src/runtime/interrupt.h
index 4f2b097..3a6a51b 100644
--- a/src/runtime/interrupt.h
+++ b/src/runtime/interrupt.h
@@ -109,16 +109,29 @@ struct interrupt_data {
     siginfo_t pending_info;
     sigset_t pending_mask;
     /* Was pending mask saved for gc request? True if GC_PENDING or
-     * SIG_STOP_FOR_GC happened in a pseudo atomic with no GC_INHIBIT
-     * NIL. Both deferrable interrupt handlers and gc are careful not
-     * to clobber each other's pending_mask. */
+     * SIG_STOP_FOR_GC happened in a pseudo atomic with GC_INHIBIT NIL
+     * and with no pending handler. Both deferrable interrupt handlers
+     * and gc are careful not to clobber each other's pending_mask. */
     boolean gc_blocked_deferrables;
+#ifdef GENCGC_IS_PRECISE
+    /* On PPC when consing wants to turn to alloc(), it does so via a
+     * trap. When alloc() wants to save the sigmask it consults
+     * allocation_trap_context. It does not look up the most recent
+     * context, because alloc() can be called from other places
+     * too. */
+    os_context_t *allocation_trap_context;
+#endif
 };
 
+typedef lispobj (*call_into_lisp_lookalike)(
+    lispobj fun, lispobj *args, int nargs);
+
 extern boolean interrupt_handler_pending_p(void);
 extern void interrupt_init(void);
 extern void fake_foreign_function_call(os_context_t* context);
 extern void undo_fake_foreign_function_call(os_context_t* context);
+extern void arrange_return_to_c_function(
+    os_context_t *, call_into_lisp_lookalike, lispobj);
 extern void arrange_return_to_lisp_function(os_context_t *, lispobj);
 extern void interrupt_handle_now(int, siginfo_t*, os_context_t*);
 extern void interrupt_handle_pending(os_context_t*);
@@ -158,4 +171,15 @@ extern void lisp_memory_fault_error(os_context_t *context,
                                     os_vm_address_t addr);
 #endif
 
+#include "thread.h"
+
+extern void lower_thread_control_stack_guard_page(struct thread *th);
+extern void reset_thread_control_stack_guard_page(struct thread *th);
+
+#if defined(LISP_FEATURE_SB_SAFEPOINT) && !defined(LISP_FEATURE_WIN32)
+# ifdef LISP_FEATURE_SB_THRUPTION
+void thruption_handler(int signal, siginfo_t *info, os_context_t *context);
+# endif
+#endif
+
 #endif