commit cb3c3548e99b616ad6f0dda9712c252396c95c1d
author Michal Schulz <michal.schulz@gmx.de> Thu Dec 03 08:30:35 2020 +0100
committer GitHub <noreply@github.com> Thu Dec 03 15:30:35 2020 +0800
tree e113992cd5154b6884dfb961d99e14ca6b62393a
parent 2bc4e7cae793d4ef186c0cbd456dfd3e30c3b098

Honour direction bit in fmove instruction (#1709)

Co-authored-by: Michal Schulz <michal@Michals-iMac-Pro.local>

arch/M68K/M68KDisassembler.c

diff --git a/arch/M68K/M68KDisassembler.c b/arch/M68K/M68KDisassembler.c
index 4b26e02..bc25152 100644
--- a/arch/M68K/M68KDisassembler.c
+++ b/arch/M68K/M68KDisassembler.c
@@ -2062,9 +2062,18 @@
 	ext->op_size.type = M68K_SIZE_TYPE_CPU;
 	ext->op_size.cpu_size = 0;
 
-	op0 = &ext->operands[0];
-	op1 = &ext->operands[1];
-
+	// Special case - adjust direction of fmove
+	if ((opmode == 0x00) && ((next >> 13) & 0x1) != 0)
+	{
+		op0 = &ext->operands[1];
+		op1 = &ext->operands[0];
+	}
+	else
+	{
+		op0 = &ext->operands[0];
+		op1 = &ext->operands[1];
+	}
+	
 	if (rm == 0 && supports_single_op && src == dst) {
 		ext->op_count = 1;
 		op0->reg = M68K_REG_FP0 + dst;