X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fsparc-arch.c;h=f32c06db6cddbde4421fafcd7b831f2218068e4f;hb=5dbc64f47b6106b196a0286f1c3e2c66c17ee14d;hp=9095f02bda5a16ffbd497bc31f5950ee7838c11c;hpb=f0f8bc6c184e849782fc784230f8e235d3659d5d;p=sbcl.git

diff --git a/src/runtime/sparc-arch.c b/src/runtime/sparc-arch.c
index 9095f02..f32c06d 100644
--- a/src/runtime/sparc-arch.c
+++ b/src/runtime/sparc-arch.c
@@ -101,7 +101,18 @@ unsigned char *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 arch_set_pseudo_atomic_interrupted(os_context_t *context)