Mirrors_Framework/ghidra
1
0
Fork 0
mirror of https://github.com/NationalSecurityAgency/ghidra.git synced 2026-05-27 21:55:32 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

GP-4055: Corrected AVR 8 Hflag usage in DES instruction

Browse Source
This commit is contained in:
ghidorahrex
2023-11-21 14:06:23 +00:00
parent 041be82286
commit 79d775e6a5
9 changed files with 18 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Ghidra/Processors/Atmel/data/languages/avr8.sinc
+10 -5
View File
@@ -739,11 +739,16 @@ define pcodeop decrypt;
:des op4to7 is phase=1 & ophi8=0x94 & oplow4=0xb & op4to7 {
val:1 = op4to7;
if (Hflg) goto <enc>;
R15R14R13R12R11R10R9R8 = decrypt(R7R6R5R4R3R2R1R0, val);
goto inst_next;
<enc>
R15R14R13R12R11R10R9R8 = encrypt(R7R6R5R4R3R2R1R0, val);
local key:8 = R15R14R13R12R11R10R9R8;
local result:16 = 0;
if (!Hflg) goto <enc>;
result = decrypt(R7R6R5R4R3R2R1R0, key, val);
goto <des_end>;
<enc>
result = encrypt(R7R6R5R4R3R2R1R0, key, val);
<des_end>
R7R6R5R4R3R2R1R0 = result(0);
R15R14R13R12R11R10R9R8 = result(8);
}
@if HASEIND == "1"