diff --git a/gdb/amd64fbsd-nat.c b/gdb/amd64fbsd-nat.c
index fe4e009..df101d0 100644
--- a/gdb/amd64fbsd-nat.c
+++ b/gdb/amd64fbsd-nat.c
@@ -183,7 +183,6 @@ _initialize_amd64fbsd_nat (void)
 
   t->to_pid_to_exec_file = fbsd_pid_to_exec_file;
   t->to_find_memory_regions = fbsd_find_memory_regions;
-  t->to_make_corefile_notes = fbsd_make_corefile_notes;
   add_target (t);
 
   /* Support debugging kernel virtual memory images.  */
diff --git a/gdb/amd64fbsd-tdep.c b/gdb/amd64fbsd-tdep.c
index 07b065a..13e14ad 100644
--- a/gdb/amd64fbsd-tdep.c
+++ b/gdb/amd64fbsd-tdep.c
@@ -26,6 +26,7 @@
 
 #include "amd64-tdep.h"
 #include "bsd-uthread.h"
+#include "fbsd-tdep.h"
 #include "solib-svr4.h"
 
 /* Support for signal handlers.  */
@@ -182,6 +183,9 @@ amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
+  /* Generic FreeBSD support. */
+  fbsd_init_abi (info, gdbarch);
+
   /* Obviously FreeBSD is BSD-based.  */
   i386bsd_init_abi (info, gdbarch);
 
diff --git a/gdb/amd64obsd-tdep.c b/gdb/amd64obsd-tdep.c
index ef0c0c2..80300c8 100644
--- a/gdb/amd64obsd-tdep.c
+++ b/gdb/amd64obsd-tdep.c
@@ -57,20 +57,19 @@ static const struct regset amd64obsd_combined_regset =
     NULL, amd64obsd_supply_regset, NULL
   };
 
-static const struct regset *
-amd64obsd_regset_from_core_section (struct gdbarch *gdbarch,
-				    const char *sect_name, size_t sect_size)
+static void
+amd64obsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
+					iterate_over_regset_sections_cb *cb,
+					void *cb_data,
+					const struct regcache *regcache)
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
   /* OpenBSD core dumps don't use seperate register sets for the
      general-purpose and floating-point registers.  */
 
-  if (strcmp (sect_name, ".reg") == 0
-      && sect_size >= tdep->sizeof_gregset + I387_SIZEOF_FXSAVE)
-    return &amd64obsd_combined_regset;
-
-  return NULL;
+  cb (".reg", tdep->sizeof_gregset + I387_SIZEOF_FXSAVE,
+      &amd64obsd_combined_regset, NULL, cb_data);
 }
 
 
@@ -492,8 +491,8 @@ amd64obsd_core_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
   amd64obsd_init_abi (info, gdbarch);
 
-  set_gdbarch_regset_from_core_section
-    (gdbarch, amd64obsd_regset_from_core_section);
+  set_gdbarch_iterate_over_regset_sections
+    (gdbarch, amd64obsd_iterate_over_regset_sections);
 }
 
 
diff --git a/gdb/configure.tgt b/gdb/configure.tgt
index 01311b2..4b09d3a 100644
--- a/gdb/configure.tgt
+++ b/gdb/configure.tgt
@@ -189,7 +189,7 @@ i[34567]86-*-dicos*)
 i[34567]86-*-freebsd* | i[34567]86-*-kfreebsd*-gnu)
 	# Target: FreeBSD/i386
 	gdb_target_obs="i386-tdep.o i387-tdep.o i386bsd-tdep.o i386fbsd-tdep.o \
-			bsd-uthread.o solib-svr4.o"
+			bsd-uthread.o fbsd-tdep.o solib-svr4.o"
 	;;
 i[34567]86-*-netbsd* | i[34567]86-*-knetbsd*-gnu)
 	# Target: NetBSD/i386
@@ -667,7 +667,7 @@ x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu)
 	# Target: FreeBSD/amd64
 	gdb_target_obs="amd64-tdep.o amd64fbsd-tdep.o i386-tdep.o \
 			i387-tdep.o i386bsd-tdep.o i386fbsd-tdep.o \
-			bsd-uthread.o solib-svr4.o"
+			bsd-uthread.o fbsd-tdep.o solib-svr4.o"
 	;;
 x86_64-*-mingw* | x86_64-*-cygwin*)
         # Target: MingW/amd64
diff --git a/gdb/i386-cygwin-tdep.c b/gdb/i386-cygwin-tdep.c
index 47c7bde..b8793c1 100644
--- a/gdb/i386-cygwin-tdep.c
+++ b/gdb/i386-cygwin-tdep.c
@@ -88,20 +88,6 @@ static int i386_windows_gregset_reg_offset[] =
 
 #define I386_WINDOWS_SIZEOF_GREGSET 716
 
-/* Return the appropriate register set for the core section identified
-   by SECT_NAME and SECT_SIZE.  */
-
-static const struct regset *
-i386_windows_regset_from_core_section (struct gdbarch *gdbarch,
-				     const char *sect_name, size_t sect_size)
-{
-  if (strcmp (sect_name, ".reg") == 0
-      && sect_size == I386_WINDOWS_SIZEOF_GREGSET)
-    return &i386_gregset;
-
-  return NULL;
-}
-
 struct cpms_data
 {
   struct gdbarch *gdbarch;
@@ -235,9 +221,9 @@ i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   tdep->gregset_num_regs = ARRAY_SIZE (i386_windows_gregset_reg_offset);
   tdep->sizeof_gregset = I386_WINDOWS_SIZEOF_GREGSET;
 
+  tdep->sizeof_fpregset = 0;
+
   /* Core file support.  */
-  set_gdbarch_regset_from_core_section
-    (gdbarch, i386_windows_regset_from_core_section);
   set_gdbarch_core_xfer_shared_libraries
     (gdbarch, windows_core_xfer_shared_libraries);
   set_gdbarch_core_pid_to_str (gdbarch, i386_windows_core_pid_to_str);
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c
index 8f8cc99..f685a6a 100644
--- a/gdb/i386-tdep.c
+++ b/gdb/i386-tdep.c
@@ -3818,22 +3818,19 @@ const struct regset i386_fpregset =
     NULL, i386_supply_fpregset, i386_collect_fpregset
   };
 
-/* Return the appropriate register set for the core section identified
-   by SECT_NAME and SECT_SIZE.  */
+/* Default iterator over core file register note sections.  */
 
-const struct regset *
-i386_regset_from_core_section (struct gdbarch *gdbarch,
-			       const char *sect_name, size_t sect_size)
+void
+i386_iterate_over_regset_sections (struct gdbarch *gdbarch,
+				   iterate_over_regset_sections_cb *cb,
+				   void *cb_data,
+				   const struct regcache *regcache)
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
-  if (strcmp (sect_name, ".reg") == 0 && sect_size == tdep->sizeof_gregset)
-    return &i386_gregset;
-
-  if (strcmp (sect_name, ".reg2") == 0 && sect_size == tdep->sizeof_fpregset)
-    return tdep->fpregset;
-
-  return NULL;
+  cb (".reg", tdep->sizeof_gregset, &i386_gregset, NULL, cb_data);
+  if (tdep->sizeof_fpregset)
+    cb (".reg2", tdep->sizeof_fpregset, tdep->fpregset, NULL, cb_data);
 }
 
 
@@ -8566,10 +8563,9 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   /* If we have a register mapping, enable the generic core file
      support, unless it has already been enabled.  */
   if (tdep->gregset_reg_offset
-      && !gdbarch_regset_from_core_section_p (gdbarch)
       && !gdbarch_iterate_over_regset_sections_p (gdbarch))
-    set_gdbarch_regset_from_core_section (gdbarch,
-					  i386_regset_from_core_section);
+    set_gdbarch_iterate_over_regset_sections
+      (gdbarch, i386_iterate_over_regset_sections);
 
   set_gdbarch_skip_permanent_breakpoint (gdbarch,
 					 i386_skip_permanent_breakpoint);
diff --git a/gdb/i386-tdep.h b/gdb/i386-tdep.h
index db8f4f7..90f4007 100644
--- a/gdb/i386-tdep.h
+++ b/gdb/i386-tdep.h
@@ -393,12 +393,12 @@ extern const struct regset i386_gregset;
 /* Floating-point register set. */
 extern const struct regset i386_fpregset;
 
-/* Return the appropriate register set for the core section identified
-   by SECT_NAME and SECT_SIZE.  */
-extern const struct regset *
-  i386_regset_from_core_section (struct gdbarch *gdbarch,
-				 const char *sect_name, size_t sect_size);
-
+/* Default iterator over core file register note sections.  */
+extern void
+  i386_iterate_over_regset_sections (struct gdbarch *gdbarch,
+				     iterate_over_regset_sections_cb *cb,
+				     void *cb_data,
+				     const struct regcache *regcache);
 
 extern struct displaced_step_closure *i386_displaced_step_copy_insn
   (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to,
diff --git a/gdb/i386fbsd-nat.c b/gdb/i386fbsd-nat.c
index 754677f..6fafbf0 100644
--- a/gdb/i386fbsd-nat.c
+++ b/gdb/i386fbsd-nat.c
@@ -143,7 +143,6 @@ _initialize_i386fbsd_nat (void)
   t->to_resume = i386fbsd_resume;
   t->to_pid_to_exec_file = fbsd_pid_to_exec_file;
   t->to_find_memory_regions = fbsd_find_memory_regions;
-  t->to_make_corefile_notes = fbsd_make_corefile_notes;
   add_target (t);
 
   /* Support debugging kernel virtual memory images.  */
diff --git a/gdb/i386fbsd-tdep.c b/gdb/i386fbsd-tdep.c
index 8942ad3..b37427f 100644
--- a/gdb/i386fbsd-tdep.c
+++ b/gdb/i386fbsd-tdep.c
@@ -26,6 +26,7 @@
 #include "i386-tdep.h"
 #include "i387-tdep.h"
 #include "bsd-uthread.h"
+#include "fbsd-tdep.h"
 #include "solib-svr4.h"
 
 /* FreeBSD 3.0-RELEASE or later.  */
@@ -204,6 +205,9 @@ i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
+  /* Generic FreeBSD support. */
+  fbsd_init_abi (info, gdbarch);
+
   /* Inherit stuff from older releases.  We assume that FreeBSD
      4.0-RELEASE always uses ELF.  */
   i386fbsd_init_abi (info, gdbarch);
diff --git a/gdb/i386obsd-tdep.c b/gdb/i386obsd-tdep.c
index 2b7d48b..1fd414f 100644
--- a/gdb/i386obsd-tdep.c
+++ b/gdb/i386obsd-tdep.c
@@ -154,21 +154,19 @@ static const struct regset i386obsd_aout_gregset =
     NULL, i386obsd_aout_supply_regset, NULL
   };
 
-static const struct regset *
-i386obsd_aout_regset_from_core_section (struct gdbarch *gdbarch,
-					const char *sect_name,
-					size_t sect_size)
+static void
+i386obsd_aout_iterate_over_regset_sections (struct gdbarch *gdbarch,
+					    iterate_over_regset_sections_cb *cb,
+					    void *cb_data,
+					    const struct regcache *regcache)
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
   /* OpenBSD a.out core dumps don't use seperate register sets for the
      general-purpose and floating-point registers.  */
 
-  if (strcmp (sect_name, ".reg") == 0
-      && sect_size >= tdep->sizeof_gregset + I387_SIZEOF_FSAVE)
-    return &i386obsd_aout_gregset;
-
-  return NULL;
+  cb (".reg", tdep->sizeof_gregset + I387_SIZEOF_FSAVE,
+      &i386obsd_aout_gregset, NULL, cb_data);
 }
 
 
@@ -482,8 +480,8 @@ i386obsd_aout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   i386obsd_init_abi (info, gdbarch);
 
   /* OpenBSD a.out has a single register set.  */
-  set_gdbarch_regset_from_core_section
-    (gdbarch, i386obsd_aout_regset_from_core_section);
+  set_gdbarch_iterate_over_regset_sections
+    (gdbarch, i386obsd_aout_iterate_over_regset_sections);
 }
 
 /* OpenBSD ELF.  */
