new subdirs: include, lib, tests

tests/libtcc_test.c

@@ -0,0 +1,84 @@
+/*
+ * Simple Test program for libtcc
+ *
+ * libtcc can be useful to use tcc as a "backend" for a code generator.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "libtcc.h"
+
+/* this function is called by the generated code */
+int add(int a, int b)
+{
+    return a + b;
+}
+
+char my_program[] =
+"int fib(int n)\n"
+"{\n"
+"    if (n <= 2)\n"
+"        return 1;\n"
+"    else\n"
+"        return fib(n-1) + fib(n-2);\n"
+"}\n"
+"\n"
+"int foo(int n)\n"
+"{\n"
+"    printf(\"Hello World!\\n\");\n"
+"    printf(\"fib(%d) = %d\\n\", n, fib(n));\n"
+"    printf(\"add(%d, %d) = %d\\n\", n, 2 * n, add(n, 2 * n));\n"
+"    return 0;\n"
+"}\n";
+
+int main(int argc, char **argv)
+{
+    TCCState *s;
+    int (*func)(int);
+    void *mem;
+    int size;
+
+    s = tcc_new();
+    if (!s) {
+        fprintf(stderr, "Could not create tcc state\n");
+        exit(1);
+    }
+
+    /* if tcclib.h and libtcc1.a are not installed, where can we find them */
+    if (argc == 2 && !memcmp(argv[1], "lib_path=",9))
+        tcc_set_lib_path(s, argv[1]+9);
+
+    /* MUST BE CALLED before any compilation */
+    tcc_set_output_type(s, TCC_OUTPUT_MEMORY);
+
+    if (tcc_compile_string(s, my_program) == -1)
+        return 1;
+
+    /* as a test, we add a symbol that the compiled program can use.
+       You may also open a dll with tcc_add_dll() and use symbols from that */
+    tcc_add_symbol(s, "add", add);
+
+    /* get needed size of the code */
+    size = tcc_relocate(s, NULL);
+    if (size == -1)
+        return 1;
+
+    /* allocate memory and copy the code into it */
+    mem = malloc(size);
+    tcc_relocate(s, mem);
+
+    /* get entry symbol */
+    func = tcc_get_symbol(s, "foo");
+    if (!func)
+        return 1;
+
+    /* delete the state */
+    tcc_delete(s);
+
+    /* run the code */
+    func(32);
+
+    free(mem);
+    return 0;
+}