From 4371ed02ac30cb56ec4ddbf60c87e85c183d860b Mon Sep 17 00:00:00 2001 From: iximeow Date: Thu, 22 Jul 2021 00:31:02 -0700 Subject: fix incorrect decodes with scas and 67-prefixes --- test/real_mode/mod.rs | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'test/real_mode') diff --git a/test/real_mode/mod.rs b/test/real_mode/mod.rs index 23744e1..82ccfab 100644 --- a/test/real_mode/mod.rs +++ b/test/real_mode/mod.rs @@ -50,6 +50,22 @@ fn test_display_under(decoder: &InstDecoder, data: &[u8], expected: &'static str } #[test] +fn only_16bit() { + test_display(&[0xac], "lods al, byte ds:[si]"); + test_display(&[0xae], "scas byte es:[di], al"); + test_display(&[0x67, 0xac], "lods al, byte ds:[esi]"); + test_display(&[0x67, 0xae], "scas byte es:[edi], al"); + test_display(&[0xf3, 0xa4], "rep movs byte es:[di], byte ds:[si]"); + test_display(&[0x67, 0xf3, 0xa4], "rep movs byte es:[edi], byte ds:[esi]"); + test_display(&[0xf3, 0xa5], "rep movs word es:[di], word ds:[si]"); + test_display(&[0x67, 0xf3, 0xa5], "rep movs word es:[edi], word ds:[esi]"); + test_display(&[0x8b, 0x0e, 0x55, 0xaa], "mov cx, word [0xaa55]"); + test_display(&[0x66, 0x8b, 0x0e, 0x55, 0xaa], "mov ecx, dword [0xaa55]"); + test_display(&[0x67, 0x8b, 0x0e], "mov cx, word [esi]"); + test_display(&[0x66, 0x67, 0x8b, 0x0e], "mov ecx, dword [esi]"); +} + +#[test] fn test_real_mode() { test_display(&[0x00, 0xcc], "add ah, cl"); test_display(&[0x03, 0x0b], "add cx, word [bp + di]"); -- cgit v1.1