diff --git a/include/parrot/extend.h b/include/parrot/extend.h
index 8c14ce6766..ccbefdc4ae 100644
--- a/include/parrot/extend.h
+++ b/include/parrot/extend.h
@@ -116,10 +116,23 @@ Parrot_Int Parrot_call_sub_ret_int(PARROT_INTERP,
         __attribute__nonnull__(1)
         __attribute__nonnull__(3);
 
+PARROT_API
+int Parrot_eprintf(NULLOK_INTERP, ARGIN(const char *s), ...)
+        __attribute__nonnull__(2);
+
 PARROT_API
 PARROT_WARN_UNUSED_RESULT
 Parrot_Language Parrot_find_language(SHIM_INTERP, SHIM(char *language));
 
+PARROT_API
+int Parrot_fprintf(PARROT_INTERP,
+    ARGIN(Parrot_PMC pio),
+    ARGIN(const char *s),
+    ...)
+        __attribute__nonnull__(1)
+        __attribute__nonnull__(2)
+        __attribute__nonnull__(3);
+
 PARROT_API
 void Parrot_free_cstring(ARGIN_NULLOK(char *string));
 
@@ -359,6 +372,10 @@ Parrot_Int Parrot_PMC_typenum(PARROT_INTERP,
     ARGIN_NULLOK(const char *_class))
         __attribute__nonnull__(1);
 
+PARROT_API
+int Parrot_printf(NULLOK_INTERP, ARGIN(const char *s), ...)
+        __attribute__nonnull__(2);
+
 PARROT_API
 void Parrot_register_pmc(PARROT_INTERP, Parrot_PMC pmc)
         __attribute__nonnull__(1);
@@ -385,6 +402,15 @@ PARROT_API
 void Parrot_unregister_pmc(PARROT_INTERP, Parrot_PMC pmc)
         __attribute__nonnull__(1);
 
+PARROT_API
+int Parrot_vfprintf(PARROT_INTERP,
+    ARGIN(Parrot_PMC pio),
+    ARGIN(const char *s),
+    va_list args)
+        __attribute__nonnull__(1)
+        __attribute__nonnull__(2)
+        __attribute__nonnull__(3);
+
 /* Don't modify between HEADERIZER BEGIN / HEADERIZER END.  Your changes will be lost. */
 /* HEADERIZER END: src/extend.c */
 
diff --git a/src/extend.c b/src/extend.c
index 0d1c407ac2..64776ec09b 100644
--- a/src/extend.c
+++ b/src/extend.c
@@ -65,6 +65,103 @@ can.
 
 /*
 
+=item C<int Parrot_vfprintf>
+
+Writes a C string format with a varargs list to a PIO.
+
+=item C<int Parrot_fprintf>
+
+Writes a C string format with varargs to a PIO.
+
+=item C<int Parrot_printf>
+
+Writes a C string format with varargs to C<stdout>.
+
+=item C<int Parrot_eprintf>
+
+Writes a C string format with varargs to C<stderr>.
+
+*/
+
+PARROT_API
+int
+Parrot_vfprintf(PARROT_INTERP, ARGIN(Parrot_PMC pio),
+        ARGIN(const char *s), va_list args)
+{
+    STRING * str;
+    INTVAL retval;
+
+    PARROT_CALLIN_START(interp);
+    str = Parrot_vsprintf_c(interp, s, args);
+    retval = PIO_putps(interp, pio, str);
+    PARROT_CALLIN_END(interp);
+
+    return retval;
+}
+
+PARROT_API
+int
+Parrot_fprintf(PARROT_INTERP, ARGIN(Parrot_PMC pio),
+        ARGIN(const char *s), ...)
+{
+    va_list args;
+    INTVAL retval;
+
+    va_start(args, s);
+    retval = Parrot_vfprintf(interp, pio, s, args);
+    va_end(args);
+
+    return retval;
+}
+
+PARROT_API
+int
+Parrot_printf(NULLOK_INTERP, ARGIN(const char *s), ...)
+{
+    va_list args;
+    INTVAL retval;
+    va_start(args, s);
+
+    if (interp) {
+        retval = Parrot_vfprintf(interp, PIO_STDOUT(interp), s, args);
+    }
+    else {
+        /* Be nice about this...
+         **   XXX BD Should this use the default PIO_STDOUT or something?
+         */
+        retval = vfprintf(stdout, s, args);
+    }
+    va_end(args);
+
+    return retval;
+}
+
+PARROT_API
+int
+Parrot_eprintf(NULLOK_INTERP, ARGIN(const char *s), ...)
+{
+    va_list args;
+    INTVAL retval;
+
+    va_start(args, s);
+
+    if (interp) {
+        retval = Parrot_vfprintf(interp, PIO_STDERR(interp), s, args);
+    }
+    else {
+        /* Be nice about this...
+         **   XXX BD Should this use the default PIO_STDOUT or something?
+         */
+        retval=vfprintf(stderr, s, args);
+    }
+
+    va_end(args);
+
+    return retval;
+}
+
+/*
+
 =item C<Parrot_String Parrot_PMC_get_string_intkey>
 
 Return the integer keyed string value of the passed-in PMC
diff --git a/t/src/extend.t b/t/src/extend.t
index 588bcda82a..11bcbcae13 100644
--- a/t/src/extend.t
+++ b/t/src/extend.t
@@ -102,7 +102,7 @@ main(int argc, char* argv[]) {
         return 1;
 
     output = Parrot_new_string(interp, "Test", 4, "iso-8859-1", 0);
-    PIO_eprintf(interp, "%S\n", output);
+    Parrot_eprintf(interp, "%S\n", output);
 
     Parrot_exit(interp, 0);
     return 0;
@@ -132,7 +132,7 @@ main(int argc, char* argv[]) {
     Parrot_set_strreg(interp, parrot_reg, value);
 
     new_value = Parrot_get_strreg(interp, parrot_reg);
-    PIO_eprintf(interp, "%S\n", new_value);
+    Parrot_eprintf(interp, "%S\n", new_value);
 
     Parrot_exit(interp, 0);
     return 0;
@@ -309,7 +309,7 @@ main(int argc, char* argv[]) {
     Parrot_PMC_set_string(interp, testpmc, value);
     new_value = Parrot_PMC_get_string(interp, testpmc);
 
-    PIO_eprintf(interp, "%S\n", new_value);
+    Parrot_eprintf(interp, "%S\n", new_value);
 
     Parrot_exit(interp, 0);
     return 0;
@@ -444,7 +444,7 @@ the_test(Parrot_Interp interp, opcode_t *cur_op, opcode_t *start)
     Parrot_loadbc(interp, pf);
     sub = Parrot_find_global_cur(interp, name);
     Parrot_call_sub(interp, sub, "v");
-    PIO_eprintf(interp, "back\n");
+    Parrot_eprintf(interp, "back\n");
 
     /* win32 seems to buffer stderr ? */
     PIO_flush(interp, PIO_STDERR(interp));
@@ -457,7 +457,7 @@ the_test(Parrot_Interp interp, opcode_t *cur_op, opcode_t *start)
                  string_from_cstring(interp, "hello ", 0));
 
     Parrot_call_sub(interp, sub, "vP", arg);
-    PIO_eprintf(interp, "back\n");
+    Parrot_eprintf(interp, "back\n");
 
     return NULL;
 }
@@ -520,7 +520,7 @@ the_test(Parrot_Interp interp, opcode_t *cur_op, opcode_t *start)
     sub = Parrot_find_global_cur(interp, name);
 
     if (setjmp(jb.destination)) {
-        PIO_eprintf(interp, "caught\n");
+        Parrot_eprintf(interp, "caught\n");
     }
     else {
         /* pretend the EH was pushed by the sub call. */
@@ -530,7 +530,7 @@ the_test(Parrot_Interp interp, opcode_t *cur_op, opcode_t *start)
         Parrot_call_sub(interp, sub, "v");
     }
 
-    PIO_eprintf(interp, "back\n");
+    Parrot_eprintf(interp, "back\n");
 
     return NULL;
 }