diff --git a/libs/README.md b/libs/README.md
index 9b4b272..43e35e7 100644
--- a/libs/README.md
+++ b/libs/README.md
@@ -1,9 +1,22 @@
 
 lexer 词法分析
-parse 语法分析
+
+pproc 预处理器
+
+parser 语法分析 sema 语义分析
+
 ast 抽象语法树
-sema 语义分析
+
 ir 中间代码标识
+
+- ast2ir
+
+- ir2mcode
+
 opt 优化器
-codegen 代码生成
+
+mcode 机器码
+
+sccf 统一输出格式
+
 target 目标平台支持
diff --git a/libs/pproc/src/pproc_directive.c b/libs/pproc/src/pproc_directive.c
index 549c7d1..95122c6 100644
--- a/libs/pproc/src/pproc_directive.c
+++ b/libs/pproc/src/pproc_directive.c
@@ -119,7 +119,8 @@ void scc_pproc_parse_function_macro(scc_pproc_t *pp,
             if (idx++ % 2 != 1) {
                 LOG_FATAL("ERROR");
             }
-        } else if (arg->type == SCC_TOK_IDENT) {
+        } else if (scc_get_tok_subtype(arg->type) ==
+                   SCC_TOK_SUBTYPE_IDENTIFIER) {
             if (idx++ % 2 != 0) {
                 LOG_FATAL("ERROR");
             }
diff --git a/libs/pproc/src/scc_pproc.c b/libs/pproc/src/scc_pproc.c
index 6ac163a..9575f06 100644
--- a/libs/pproc/src/scc_pproc.c
+++ b/libs/pproc/src/scc_pproc.c
@@ -52,7 +52,7 @@ CONTINUE:
         scc_ring_next_consume(*stream, *out, ok);
         pp->at_line_start = true;
         return true;
-    } else if (tok.type == SCC_TOK_IDENT) {
+    } else if (scc_get_tok_subtype(tok.type) == SCC_TOK_SUBTYPE_IDENTIFIER) {
         // maybe expanded
         scc_pproc_macro_t *macro =
             scc_pproc_macro_table_get(&pp->macro_table, &tok.lexeme);
diff --git a/libs/pproc/tests/test_pproc_unit.c b/libs/pproc/tests/test_pproc_unit.c
index 5548e05..df4bea3 100644
--- a/libs/pproc/tests/test_pproc_unit.c
+++ b/libs/pproc/tests/test_pproc_unit.c
@@ -181,6 +181,19 @@ static void test_define_nested_macros(void) {
                           "#define x 2\n"
                           "g(z)\n",
                           "f(2 * (z))\n");
+
+    TEST_CASE("with keyword as macro name or parameter name");
+    CHECK_PP_OUTPUT_EXACT(
+        "#define ASSIGN_PTR_OR_DEFAULT(assigned_val, value, default)\\\n"
+        "assigned_val = value ? value : default\n"
+        "ASSIGN_PTR_OR_DEFAULT(parser->sema_callbacks.on_decl,"
+        "callbacks->on_decl, dummy_sema_callback);\n",
+        "parser->sema_callbacks.on_decl = callbacks->on_decl ? "
+        "callbacks->on_decl : dummy_sema_callback;\n");
+
+    CHECK_PP_OUTPUT_EXACT("#define default a\n"
+                          "default\n",
+                          "a\n");
 }
 
 static void test_undef_macros(void) {
diff --git a/runtime/scc_core/include/printf/printf.c b/runtime/scc_core/include/scc_printf/printf.c
similarity index 100%
rename from runtime/scc_core/include/printf/printf.c
rename to runtime/scc_core/include/scc_printf/printf.c
diff --git a/runtime/scc_core/include/printf/printf.h b/runtime/scc_core/include/scc_printf/printf.h
similarity index 100%
rename from runtime/scc_core/include/printf/printf.h
rename to runtime/scc_core/include/scc_printf/printf.h
diff --git a/runtime/scc_core/src/core_impl.c b/runtime/scc_core/src/core_impl.c
index 31e59d3..4c8d5a0 100644
--- a/runtime/scc_core/src/core_impl.c
+++ b/runtime/scc_core/src/core_impl.c
@@ -1,5 +1,5 @@
 // IMPLEMENT
-#include <printf/printf.c>
+#include <scc_printf/printf.c>
 
 #include <scc_core_impl.h>
 #define __SCC_LOG_IMPL_IMPORT_SRC__
@@ -16,15 +16,7 @@ scc_file_t scc_fopen(const char *path, scc_fmode_t mode) {
 
 void scc_fclose(scc_file_t file) { scc_pal_fclose(file); }
 
-usize scc_fread(scc_file_t file, void *buffer, usize size) {
-    return scc_pal_fread(file, buffer, size);
-}
-
-usize scc_fwrite(scc_file_t file, const void *buffer, usize size) {
-    return scc_pal_fwrite(file, buffer, size);
-}
-
-usize scc_fsize(scc_pal_file_t file) {
+usize scc_fsize(scc_file_t file) {
     if (scc_pal_fseek(file, 0, SCC_SEEK_PAL_END) != 0) {
         LOG_ERROR("fseek failed");
         return 0;
@@ -37,6 +29,14 @@ usize scc_fsize(scc_pal_file_t file) {
     return fsize;
 }
 
+usize scc_fread(scc_file_t file, void *buffer, usize size) {
+    return scc_pal_fread(file, buffer, size);
+}
+
+usize scc_fwrite(scc_file_t file, const void *buffer, usize size) {
+    return scc_pal_fwrite(file, buffer, size);
+}
+
 cbool scc_fexists(const char *path) {
     scc_file_t fp = scc_fopen(path, SCC_FILE_READ);
     if (!fp)