1.0.26.16: fix gencgc on ppc

[sbcl.git] / src / runtime / ppc-arch.c

diff --git a/src/runtime/ppc-arch.c b/src/runtime/ppc-arch.c
index ad4450a..533293d 100644 (file)
--- a/src/runtime/ppc-arch.c
+++ b/src/runtime/ppc-arch.c
@@ -16,11 +16,13 @@
 #include "globals.h"
 #include "validate.h"
 #include "os.h"
+#include "interrupt.h"
 #include "lispregs.h"
 #include "signal.h"
 #include "interrupt.h"
 #include "interr.h"
 #include "breakpoint.h"
+#include "alloc.h"
 
 #if defined(LISP_FEATURE_GENCGC)
 #include "gencgc-alloc-region.h"
@@ -84,7 +86,18 @@ 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
@@ -344,7 +357,13 @@ handle_allocation_trap(os_context_t * context)
             dynamic_space_free_pointer);
 #endif
 
-    memory = (char *) alloc(size);
+    {
+        struct interrupt_data *data =
+            arch_os_get_current_thread()->interrupt_data;
+        data->allocation_trap_context = context;
+        memory = (char *) alloc(size);
+        data->allocation_trap_context = 0;
+    }
 
 #if 0
     fprintf(stderr, "alloc returned %p\n", memory);
@@ -415,9 +434,6 @@ sigtrap_handler(int signal, siginfo_t *siginfo, os_context_t *context)
 {
     unsigned int code;
 
-#ifdef LISP_FEATURE_LINUX
-    os_restore_fp_control(context);
-#endif
     code=*((u32 *)(*os_context_pc_addr(context)));
     if (code == ((3 << 26) | (0x18 << 21) | (reg_NL3 << 16))) {
         arch_clear_pseudo_atomic_interrupted(context);
@@ -433,9 +449,6 @@ 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
@@ -444,75 +457,21 @@ 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);
-}
-
-
-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