1 files changed, 86 insertions, 15 deletions

diff --git a/builtin.c b/builtin.c
index 7c3653dab7..03c9d03bc3 100644
--- a/builtin.c
+++ b/builtin.c
@@ -1,17 +1,18 @@
 #include "internal.h"
+#include "internal/box.h"
 #include "vm_core.h"
 #include "iseq.h"
 #include "builtin.h"
 
-#if CROSS_COMPILING
+#include "builtin_binary.rbbin"
 
-#define INCLUDED_BY_BUILTIN_C 1
+#ifndef BUILTIN_BINARY_SIZE
+
+#define BUILTIN_LOADED(feature_name, iseq) ((void)0)
 #include "mini_builtin.c"
 
 #else
 
-#include "builtin_binary.inc"
-
 static const unsigned char *
 bin4feature(const struct builtin_binary *bb, const char *feature, size_t *psize)
 {
@@ -22,41 +23,103 @@ bin4feature(const struct builtin_binary *bb, const char *feature, size_t *psize)
 static const unsigned char*
 builtin_lookup(const char *feature, size_t *psize)
 {
-    static int index = 0;
-    const unsigned char *bin = bin4feature(&builtin_binary[index++], feature, psize);
+    static size_t index = 0;
+    const unsigned char *bin = NULL;
+
+    /*
+     * Fast path:
+     * builtin_binary is usually arranged in the same order
+     * as features are looked up in miniruby, so try the next entry first.
+     */
+    if (builtin_binary[index].feature) {
+        bin = bin4feature(&builtin_binary[index], feature, psize);
+        index++;
+    }
+    if (bin) {
+        return bin;
+    }
 
-    // usually, `builtin_binary` order is loading order at miniruby.
-    for (const struct builtin_binary *bb = &builtin_binary[0]; bb->feature &&! bin; bb++) {
-        bin = bin4feature(bb++, feature, psize);
+    /*
+     * Fallback:
+     * In case the lookup order does not match the array order,
+     * scan the entire table to find the feature.
+     */
+    for (const struct builtin_binary *bb = &builtin_binary[0];
+         bb->feature;
+         bb++) {
+        bin = bin4feature(bb, feature, psize);
+        if (bin) {
+            break;
+        }
     }
+
     return bin;
 }
 
-void
-rb_load_with_builtin_functions(const char *feature_name, const struct rb_builtin_function *table)
+static void
+load_with_builtin_functions(const char *feature_name, const struct rb_builtin_function *table, const rb_box_t *target_box)
 {
     // search binary
     size_t size;
     const unsigned char *bin = builtin_lookup(feature_name, &size);
     if (! bin) {
-        rb_bug("builtin_lookup: can not find %s\n", feature_name);
+        rb_bug("builtin_lookup: can not find %s", feature_name);
     }
 
     // load binary
     rb_vm_t *vm = GET_VM();
     if (vm->builtin_function_table != NULL) rb_bug("vm->builtin_function_table should be NULL.");
     vm->builtin_function_table = table;
-    vm->builtin_inline_index = 0;
     const rb_iseq_t *iseq = rb_iseq_ibf_load_bytes((const char *)bin, size);
+    ASSUME(iseq); // otherwise an exception should have raised
     vm->builtin_function_table = NULL;
 
     // exec
-    rb_iseq_eval(rb_iseq_check(iseq));
+    rb_iseq_eval(rb_iseq_check(iseq), target_box);
+}
+
+void
+rb_load_with_builtin_functions(const char *feature_name, const struct rb_builtin_function *table)
+{
+    load_with_builtin_functions(feature_name, table, rb_root_box());
+}
+
+VALUE
+rb_define_gem_modules(VALUE flags_value, VALUE _)
+{
+    rb_box_gem_flags_t *flags = (rb_box_gem_flags_t *)flags_value;
+
+    if (flags->gem) {
+        rb_define_module("Gem");
+        if (flags->error_highlight) {
+            rb_define_module("ErrorHighlight");
+        }
+        if (flags->did_you_mean) {
+            rb_define_module("DidYouMean");
+        }
+        if (flags->syntax_suggest) {
+            rb_define_module("SyntaxSuggest");
+        }
+    }
+
+    return Qnil;
+}
+
+void
+rb_load_gem_prelude(VALUE box)
+{
+    load_with_builtin_functions("gem_prelude", NULL, (const rb_box_t *)box);
 }
 
 #endif
 
 void
+rb_free_loaded_builtin_table(void)
+{
+    // do nothing
+}
+
+void
 Init_builtin(void)
 {
     // nothing
@@ -65,5 +128,13 @@ Init_builtin(void)
 void
 Init_builtin_features(void)
 {
-    rb_load_with_builtin_functions("gem_prelude", NULL);
+
+#ifdef BUILTIN_BINARY_SIZE
+
+    rb_load_gem_prelude((VALUE)rb_root_box());
+
+    rb_load_gem_prelude((VALUE)rb_main_box());
+
+#endif
+
 }