1 files changed, 43 insertions, 0 deletions
diff --git a/tools/x86test.c b/tools/x86test.c
new file mode 100644
index 0000000..18fc72f
--- /dev/null
+++ b/tools/x86test.c
@@ -0,0 +1,43 @@
+/* This file is dedicated to the public domain. */
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "../src/udis86.h"
+#include "../src/udis86.c"
+#include "../src/intdefs.h"
+#include "../src/x86.h"
+#include "../src/x86.c"
+#include "../src/os.h"
+#include "../src/os.c"
+
+/*
+ * Quick hacked-up test program to more exhaustively test x86.c. This is not run
+ * as part of the build; it is just here for development and reference purposes.
+ */
+
+int main(void) {
+	uchar buf[15];
+	int bad = 0;
+	for (int i = 0; i < 100000000 && bad < 30; ++i) {
+		os_randombytes(buf, sizeof(buf));
+		struct ud u;
+		ud_init(&u);
+		ud_set_mode(&u, 32);
+		ud_set_input_buffer(&u, buf, sizeof(buf));
+		ud_set_syntax(&u, UD_SYN_INTEL);
+		int len = ud_disassemble(&u);
+		if (len && ud_insn_mnemonic(&u) != UD_Iinvalid) {
+			int mylen = x86_len(buf);
+			if (mylen != -1 && mylen != len) {
+				++bad;
+				fprintf(stderr, "Uh oh! %s\nExp: %d\nGot: %d\nBytes:",
+						ud_insn_asm(&u), len, mylen);
+				for (int i = 0; i < len; ++i) fprintf(stderr, " %02X", buf[i]);
+				fputs("\n\n", stderr);
+			}
+		}
+	}
+	fprintf(stderr, "%d bad cases\n", bad);
+}
+