bugfixes for Cyclone r9 change

[picodrive.git] / cpu / Cyclone / OpBranch.cpp

diff --git a/cpu/Cyclone/OpBranch.cpp b/cpu/Cyclone/OpBranch.cpp
index 0a2b3ec..ce5ae70 100644 (file)
--- a/cpu/Cyclone/OpBranch.cpp
+++ b/cpu/Cyclone/OpBranch.cpp
@@ -47,7 +47,7 @@ static void PopSr(int high)
   OpRegToFlags(high);\r
 }\r
 \r
-// Pop PC - assumes r11=Memory Base - trashes r0-r3\r
+// Pop PC - trashes r0-r3\r
 static void PopPc()\r
 {\r
   ot(";@ Pop PC:\n");\r
@@ -55,7 +55,8 @@ static void PopPc()
   ot("  add r1,r0,#4 ;@ Postincrement A7\n");\r
   ot("  str r1,[r7,#0x3c] ;@ Save A7\n");\r
   MemHandler(0,2);\r
-  ot("  add r0,r0,r11 ;@ Memory Base+PC\n");\r
+  ot("  ldr r1,[r7,#0x60] ;@ Get Memory base\n");\r
+  ot("  add r0,r0,r1 ;@ Memory Base+PC\n");\r
   ot("\n");\r
   CheckPc();\r
 #if EMULATE_ADDRESS_ERRORS_JUMP\r
@@ -175,7 +176,6 @@ int Op4E70(int op)
     case 3: // rte\r
     OpStart(op,0x10,0,0,1); Cycles=20;\r
     PopSr(1);\r
-    ot("  ldr r11,[r7,#0x60] ;@ Get Memory base\n");\r
     PopPc();\r
     ot("  ldr r1,[r7,#0x44] ;@ reload SR high\n");\r
     SuperChange(op,1);\r
@@ -195,7 +195,6 @@ int Op4E70(int op)
 \r
     case 5: // rts\r
     OpStart(op,0x10); Cycles=16;\r
-    ot("  ldr r11,[r7,#0x60] ;@ Get Memory base\n");\r
     PopPc();\r
 #if EMULATE_ADDRESS_ERRORS_JUMP\r
     ot("  tst r4,#1 ;@ address error?\n");\r
@@ -217,7 +216,6 @@ int Op4E70(int op)
     case 7: // rtr\r
     OpStart(op,0x10); Cycles=20;\r
     PopSr(0);\r
-    ot("  ldr r11,[r7,#0x60] ;@ Get Memory base\n");\r
     PopPc();\r
 #if EMULATE_ADDRESS_ERRORS_JUMP\r
     ot("  tst r4,#1 ;@ address error?\n");\r