diff --git a/asmrun/signals_osdep.h b/asmrun/signals_osdep.h
index 30c668463a7e..23165ad680b6 100644
--- a/asmrun/signals_osdep.h
+++ b/asmrun/signals_osdep.h
@@ -267,9 +267,11 @@
      sigact.sa_flags = 0
 
   typedef unsigned long context_reg;
+  #define CONTEXT_PC (context->sc_frame.srr0)
   #define CONTEXT_EXCEPTION_POINTER (context->sc_frame.fixreg[29])
   #define CONTEXT_YOUNG_LIMIT (context->sc_frame.fixreg[30])
   #define CONTEXT_YOUNG_PTR (context->sc_frame.fixreg[31])
+  #define CONTEXT_SP (context->sc_frame.fixreg[1])
 
 /****************** SPARC, Solaris */
 
diff --git a/configure b/configure
index 58b11438401e..f13bef2cf526 100755
--- a/configure
+++ b/configure
@@ -757,11 +757,11 @@ if test $with_sharedlibs = "yes"; then
     sparc*-*-linux*)              natdynlink=true;;
     i686-*-kfreebsd*)             natdynlink=true;;
     x86_64-*-kfreebsd*)           natdynlink=true;;
-    i[345]86-*-freebsd*)          natdynlink=true;;
+    i[3456]86-*-freebsd*)         natdynlink=true;;
     x86_64-*-freebsd*)            natdynlink=true;;
-    i[345]86-*-openbsd*)          natdynlink=true;;
+    i[3456]86-*-openbsd*)         natdynlink=true;;
     x86_64-*-openbsd*)            natdynlink=true;;
-    i[345]86-*-netbsd*)           natdynlink=true;;
+    i[3456]86-*-netbsd*)          natdynlink=true;;
     x86_64-*-netbsd*)             natdynlink=true;;
     i386-*-gnu0.3)                natdynlink=true;;
     arm*-*-linux*)                natdynlink=true;;
@@ -818,6 +818,8 @@ case "$target" in
   armv5te*-*-linux-gnueabi)     arch=arm; model=armv5te; system=linux_eabi;;
   armv5*-*-linux-gnueabi)       arch=arm; model=armv5; system=linux_eabi;;
   arm*-*-linux-gnueabi)         arch=arm; system=linux_eabi;;
+  arm*-*-openbsd*)              arch=arm; system=bsd;;
+  zaurus*-*-openbsd*)           arch=arm; system=bsd;;
   x86_64-*-linux*)              arch=amd64; system=linux;;
   x86_64-*-gnu*)                arch=amd64; system=gnu;;
   x86_64-*-freebsd*)            arch=amd64; system=freebsd;;
@@ -905,12 +907,16 @@ case "$arch,$system" in
   i386,bsd_elf) profiling='prof';;
   amd64,macosx) profiling='prof';;
   i386,macosx) profiling='prof';;
+  sparc,bsd) profiling='prof';;
   sparc,solaris)
     profiling='prof'
     case "$nativecc" in gcc*) ;; *) cc_profile='-xpg';; esac;;
   amd64,linux) profiling='prof';;
+  amd64,openbsd) profiling='prof';;
   amd64,gnu) profiling='prof';;
   arm,linux*) profiling='prof';;
+  power,elf) profiling='prof';;
+  power,bsd*) profiling='prof';;
   *) profiling='noprof';;
 esac