From 42bb6f6037e79e7b869d4b358f59d46261eb69fd Mon Sep 17 00:00:00 2001
From: Steven Frank <stevenf@panic.com>
Date: Wed, 8 Feb 2017 15:47:04 -0800
Subject: [PATCH] Implemented 'dis' (disassemble) command in monitor

---
 Monitor/TMacMonitor.mm |  4 +++-
 Monitor/TMonitor.cp    | 24 ++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/Monitor/TMacMonitor.mm b/Monitor/TMacMonitor.mm
index 904a65d3f..515e2e429 100644
--- a/Monitor/TMacMonitor.mm
+++ b/Monitor/TMacMonitor.mm
@@ -309,7 +309,9 @@
 {
 	if ( controller )
 	{
-		[controller addHistoryLine:[NSString stringWithCString:inLine encoding:NSUTF8StringEncoding] type:type];
+		NSString *s = [NSString stringWithCString:inLine encoding:NSUTF8StringEncoding];
+		s = [s stringByReplacingOccurrencesOfString:@"\t" withString:@" "];
+		[controller addHistoryLine:s type:type];
 	}
 }
 
diff --git a/Monitor/TMonitor.cp b/Monitor/TMonitor.cp
index bb2273db1..2dcb85db7 100644
--- a/Monitor/TMonitor.cp
+++ b/Monitor/TMonitor.cp
@@ -972,6 +972,30 @@ TMonitor::ExecuteCommand( const char* inCommand )
 			}
 			theArgInt += 16;
 		}
+	} else if ( ::sscanf(inCommand, "dis %X", &theArgInt) == 1 ) {
+		KUInt32 addr = theArgInt;
+		KUInt32 data;
+
+		for ( int i = 0; i < 16; ++i )
+		{
+			if ( mMemory->Read((TMemory::VAddr) addr, data) )
+			{
+				(void) ::sprintf(
+								 theLine, "Memory error when accessing %.8X [%.8X]",
+								 (unsigned int) theArgInt,
+								 (unsigned int) mMemory->GetFaultStatusRegister() );
+				PrintLine(theLine, MONITOR_LOG_ERROR);
+				break;
+			} else {
+				char disasm[256];
+
+				UDisasm::Disasm(disasm, 256, addr, data);
+				::snprintf(theLine, 256, "     %08X   %s", addr, disasm);
+				PrintLine(theLine, MONITOR_LOG_INFO);
+			}
+
+			addr += 4;
+		}
 	} else if (::sscanf(inCommand, "dm %X", &theArgInt) == 1) {
 		KUInt32 theData[4];
 		KUInt32 last;