X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fppc-arch.c;h=5e6b8851ecffa9527553ac38808ef6623cd2e10a;hb=1db4f16ef02f5b4d699d78541edb19ad8f3defc8;hp=dca032e751fe8a4691f156f192760338122c1531;hpb=5f4fe75b7ee2b33e263097415240d198b6275de3;p=sbcl.git

diff --git a/src/runtime/ppc-arch.c b/src/runtime/ppc-arch.c
index dca032e..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
@@ -444,32 +454,21 @@ sigtrap_handler(int signal, siginfo_t *siginfo, os_context_t *context)
         /* twllei reg_ZERO,N will always trap if reg_ZERO = 0 */
         int trap = code & 0x1f;
         handle_trap(context,trap);
-
-#ifdef LISP_FEATURE_DARWIN
-        DARWIN_FIX_CONTEXT(context);
-#endif
         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);
+    undoably_install_low_level_interrupt_handler(SIGILL, sigtrap_handler);
+    undoably_install_low_level_interrupt_handler(SIGTRAP, sigtrap_handler);
 }
 
 void