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authorMichael Smith <mikesmiffy128@gmail.com>2023-07-29 13:24:03 +0100
committerMichael Smith <mikesmiffy128@gmail.com>2023-08-02 01:08:29 +0100
commit472b37fbf06e3588ff8ec9496aef44758ebf1bc3 (patch)
tree39dc5411507cb967de6a6ee4b99d60e5670a1826 /test/x86.test.c
parent1e310fa30a1bca4448f47116f5d05037cc2ada1a (diff)
Fix another x86 case and add regression tests
Diffstat (limited to 'test/x86.test.c')
-rw-r--r--test/x86.test.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/test/x86.test.c b/test/x86.test.c
new file mode 100644
index 0000000..ab0a679
--- /dev/null
+++ b/test/x86.test.c
@@ -0,0 +1,41 @@
+/* This file is dedicated to the public domain. */
+
+{.desc = "x86 opcode parsing"};
+
+#include "../src/x86.c"
+#include "../src/intdefs.h"
+
+TEST("The \"crazy\" instructions should be given correct lengths\n") {
+ const uchar test8[] = {
+ 0xF6, 0x05, 0x12, 0x34, 0x56, 0x78, 0x12
+ };
+ const uchar test16[] = {
+ 0x66, 0xF7, 0x05, 0x12, 0x34, 0x56, 0x78, 0x12, 0x34
+ };
+ const uchar test32[] = {
+ 0xF7, 0x05, 0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x56, 0x78
+ };
+ const uchar not8[] = {
+ 0xF6, 0x15, 0x12, 0x34, 0x56, 0x78
+ };
+ const uchar not16[] = {
+ 0x66, 0xF7, 0x15, 0x12, 0x34, 0x56, 0x78
+ };
+ const uchar not32[] = {
+ 0xF7, 0x15, 0x12, 0x34, 0x56, 0x78
+ };
+ if (x86_len(test8) != 7) return false;
+ if (x86_len(test16) != 9) return false;
+ if (x86_len(test32) != 10) return false;
+ if (x86_len(not8) != 6) return false;
+ if (x86_len(not16) != 7) return false;
+ if (x86_len(not32) != 6) return false;
+ return true;
+}
+
+TEST("SIB bytes should be decoded correctly") {
+ const uchar fstp[] = {0xD9, 0x1C, 0x24}; // old buggy case, for regressions
+ return x86_len(fstp) == 3;
+}
+
+// vi: sw=4 ts=4 noet tw=80 cc=80