X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fppc-arch.c;h=5e6b8851ecffa9527553ac38808ef6623cd2e10a;hb=dc5d8cef786c974258601109f79ab18f874b1270;hp=55bc375f13bf17ad31cdd0c2f56acfdbd79dac0b;hpb=e60863045b4bc5b7c09d54f745d5d7ecc215f477;p=sbcl.git

diff --git a/src/runtime/ppc-arch.c b/src/runtime/ppc-arch.c
index 55bc375..5e6b885 100644
--- a/src/runtime/ppc-arch.c
+++ b/src/runtime/ppc-arch.c
@@ -21,6 +21,7 @@
 #include "interrupt.h"
 #include "interr.h"
 #include "breakpoint.h"
+#include "alloc.h"
 
 #if defined(LISP_FEATURE_GENCGC)
 #include "gencgc-alloc-region.h"
@@ -84,7 +85,18 @@ arch_internal_error_arguments(os_context_t *context)
 boolean
 arch_pseudo_atomic_atomic(os_context_t *context)
 {
-    return ((*os_context_register_addr(context,reg_ALLOC)) & 4);
+    /* FIXME: this foreign_function_call_active test is dubious at
+     * best. If a foreign call is made in a pseudo atomic section
+     * (?) or more likely a pseudo atomic section is in a foreign
+     * call then an interrupt is executed immediately. Maybe it
+     * has to do with C code not maintaining pseudo atomic
+     * properly. MG - 2005-08-10
+     *
+     * The foreign_function_call_active used to live at each call-site
+     * to arch_pseudo_atomic_atomic, but this seems clearer.
+     * --NS 2007-05-15 */
+    return (!foreign_function_call_active)
+        && ((*os_context_register_addr(context,reg_ALLOC)) & 4);
 }
 
 void
@@ -411,9 +423,10 @@ arch_handle_single_step_trap(os_context_t *context, int trap)
 }
 
 static void
-sigtrap_handler(int signal, siginfo_t *siginfo, os_context_t *context)
+sigtrap_handler(int signal, siginfo_t *siginfo, void *void_context)
 {
     unsigned int code;
+    os_context_t *context = void_context;
 
 #ifdef LISP_FEATURE_LINUX
     os_restore_fp_control(context);
@@ -433,9 +446,6 @@ sigtrap_handler(int signal, siginfo_t *siginfo, os_context_t *context)
     if (allocation_trap_p(context)) {
         handle_allocation_trap(context);
         arch_skip_instruction(context);
-#ifdef LISP_FEATURE_DARWIN
-        DARWIN_FIX_CONTEXT(context);
-#endif
         return;
     }
 #endif
@@ -443,78 +453,22 @@ sigtrap_handler(int signal, siginfo_t *siginfo, os_context_t *context)
     if ((code >> 16) == ((3 << 10) | (6 << 5))) {
         /* twllei reg_ZERO,N will always trap if reg_ZERO = 0 */
         int trap = code & 0x1f;
-
-        if (!maybe_handle_trap(context,trap))
-            interrupt_handle_now(signal, siginfo, context);
-
-#ifdef LISP_FEATURE_DARWIN
-        DARWIN_FIX_CONTEXT(context);
-#endif
+        handle_trap(context,trap);
         return;
     }
     if (((code >> 26) == 3) && (((code >> 21) & 31) == 24)) {
         interrupt_internal_error(context, 0);
-#ifdef LISP_FEATURE_DARWIN
-        DARWIN_FIX_CONTEXT(context);
-#endif
         return;
     }
 
-    interrupt_handle_now(signal, code, context);
-#ifdef LISP_FEATURE_DARWIN
-    /* Work around G5 bug */
-    DARWIN_FIX_CONTEXT(context);
-#endif
+    interrupt_handle_now(signal, (siginfo_t *)code, context);
 }
 
 
 void arch_install_interrupt_handlers()
 {
-    undoably_install_low_level_interrupt_handler(SIGILL,sigtrap_handler);
-    undoably_install_low_level_interrupt_handler(SIGTRAP,sigtrap_handler);
-}
-
-
-extern lispobj call_into_lisp(lispobj fun, lispobj *args, int nargs);
-
-lispobj funcall0(lispobj function)
-{
-    lispobj *args = current_control_stack_pointer;
-
-    return call_into_lisp(function, args, 0);
-}
-
-lispobj funcall1(lispobj function, lispobj arg0)
-{
-    lispobj *args = current_control_stack_pointer;
-
-    current_control_stack_pointer += 1;
-    args[0] = arg0;
-
-    return call_into_lisp(function, args, 1);
-}
-
-lispobj funcall2(lispobj function, lispobj arg0, lispobj arg1)
-{
-    lispobj *args = current_control_stack_pointer;
-
-    current_control_stack_pointer += 2;
-    args[0] = arg0;
-    args[1] = arg1;
-
-    return call_into_lisp(function, args, 2);
-}
-
-lispobj funcall3(lispobj function, lispobj arg0, lispobj arg1, lispobj arg2)
-{
-    lispobj *args = current_control_stack_pointer;
-
-    current_control_stack_pointer += 3;
-    args[0] = arg0;
-    args[1] = arg1;
-    args[2] = arg2;
-
-    return call_into_lisp(function, args, 3);
+    undoably_install_low_level_interrupt_handler(SIGILL, sigtrap_handler);
+    undoably_install_low_level_interrupt_handler(SIGTRAP, sigtrap_handler);
 }
 
 void