From 8045df14d2494e34c064b58bc1772101014172a2 Mon Sep 17 00:00:00 2001
From: Normmatt <normmatt234@gmail.com>
Date: Wed, 17 Dec 2014 03:01:42 -0500
Subject: [PATCH] armemu: Implement REVSH
---
src/core/arm/interpreter/armemu.cpp | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/src/core/arm/interpreter/armemu.cpp b/src/core/arm/interpreter/armemu.cpp
index a62658b7c..71cae3db0 100644
--- a/src/core/arm/interpreter/armemu.cpp
+++ b/src/core/arm/interpreter/armemu.cpp
@@ -6076,10 +6076,10 @@ L_stm_s_takeabort:
ror = 24;
break;
- case 0xf3:
+ case 0xf3: // REV
DEST = ((RHS & 0xFF) << 24) | ((RHS & 0xFF00)) << 8 | ((RHS & 0xFF0000) >> 8) | ((RHS & 0xFF000000) >> 24);
return 1;
- case 0xfb:
+ case 0xfb: // REV16
DEST = ((RHS & 0xFF) << 8) | ((RHS & 0xFF00)) >> 8 | ((RHS & 0xFF0000) << 8) | ((RHS & 0xFF000000) >> 8);
return 1;
default:
@@ -6206,9 +6206,13 @@ L_stm_s_takeabort:
ror = 24;
break;
- case 0xfb:
- printf("Unhandled v6 insn: revsh\n");
- return 0;
+ case 0xfb: // REVSH
+ {
+ DEST = ((RHS & 0xFF) << 8) | ((RHS & 0xFF00) >> 8);
+ if (DEST & 0x8000)
+ DEST |= 0xffff0000;
+ return 1;
+ }
default:
break;
}