patch qemu to make my life better.

qemu-patches.patch

diff qemu1/ui/cocoa.m qemu2/ui/cocoa.m
--- qemu1/ui/cocoa.m
+++ qemu2/ui/cocoa.m
@@ -358,5 +358,5 @@ QemuCocoaView *cocoaView;
 - (BOOL) screenContainsPoint:(NSPoint) p
 {
-    return (p.x > -1 && p.x < screen.width && p.y > -1 && p.y < screen.height);
+    return (p.x > -1 && p.x < (screen.width * cdx) && p.y > -1 && p.y < (screen.height * cdx));
 }
 
@@ -498,8 +498,8 @@ QemuCocoaView *cocoaView;
         cy = 0;
         cw = screen.width;
         ch = screen.height;
-        cdx = 1.0;
-        cdy = 1.0;
+        cdx = 1.0 / (double) [[NSScreen mainScreen] backingScaleFactor];
+        cdy = 1.0 / (double) [[NSScreen mainScreen] backingScaleFactor];
     }
 }

@@ -546,7 +546,7 @@ QemuCocoaView *cocoaView;
     } else {
         if (qemu_name)
             [normalWindow setTitle:[NSString stringWithFormat:@"QEMU %s", qemu_name]];
-        [normalWindow setFrame:NSMakeRect([normalWindow frame].origin.x, [normalWindow frame].origin.y - h + oldh, w, h + [normalWindow frame].size.height - oldh) display:YES animate:NO];
+        [normalWindow setFrame:NSMakeRect([normalWindow frame].origin.x, [normalWindow frame].origin.y - h + oldh, w*cdx, h*cdy+22) display:YES animate:NO];
     }

     if (isResize) {
@@ -1131,7 +1131,7 @@ QemuCocoaView *cocoaView;
                                                          (NSApplication *)sender
 {
     COCOA_DEBUG("QemuCocoaAppController: applicationShouldTerminate\n");
-    return [self verifyQuit];
+    return YES;
 }

 /* Called when the user clicks on a window's close button */
diff qemu1/util/log.c qemu2/util/log.c
--- qemu1/util/log.c
+++ qemu2/util/log.c
@@ -329,6 +329,8 @@ const QEMULogItem qemu_log_items[] = {
     { CPU_LOG_TB_NOCHAIN, "nochain",
       "do not chain compiled TBs so that \"exec\" and \"cpu\" show\n"
       "complete traces" },
+    { CPU_LOG_EXCEPTION, "exception",
+      "x86 only: log cpu exceptions" },
 #ifdef CONFIG_PLUGIN
     { CPU_LOG_PLUGIN, "plugin", "output from TCG plugins\n"},
 #endif
diff qemu1/target/i386/seg_helper.c qemu2/target/i386/seg_helper.c
--- qemu1/target/i386/seg_helper.c
+++ qemu2/target/i386/seg_helper.c
@@ -1208,13 +1208,13 @@ static void do_interrupt_all(X86CPU *cpu, int intno, int is_int,
 {
     CPUX86State *env = &cpu->env;
 
-    if (qemu_loglevel_mask(CPU_LOG_INT)) {
+    if (qemu_loglevel_mask(CPU_LOG_INT) || (qemu_loglevel_mask(CPU_LOG_EXCEPTION) && intno < 32)) {
         if ((env->cr[0] & CR0_PE_MASK)) {
             static int count;
 
-            qemu_log("%6d: v=%02x e=%04x i=%d cpl=%d IP=%04x:" TARGET_FMT_lx
+            qemu_log("\n%s\n%6d: v=%02x e=%04x i=%d cpl=%d IP=%04x:" TARGET_FMT_lx
                      " pc=" TARGET_FMT_lx " SP=%04x:" TARGET_FMT_lx,
-                     count, intno, error_code, is_int,
+                     intno < 32 ? "!! CPU EXCEPTION !!" : "", count, intno, error_code, is_int,
                      env->hflags & HF_CPL_MASK,
                      env->segs[R_CS].selector, env->eip,
                      (int)env->segs[R_CS].base + env->eip,
@@ -1226,6 +1226,7 @@ static void do_interrupt_all(X86CPU *cpu, int intno, int is_int,
             }
             qemu_log("\n");
             log_cpu_state(CPU(cpu), CPU_DUMP_CCOP);
+            qemu_log("\n");
 #if 0
             {
                 int i;
diff qemu1/target/i386/excp_helper.c qemu2/target/i386/excp_helper.c
--- qemu1/target/i386/excp_helper.c
+++ qemu2/target/i386/excp_helper.c
@@ -48,7 +48,7 @@ static int check_exception(CPUX86State *env, int intno, int *error_code,
     int second_contributory = intno == 0 ||
                                (intno >= 10 && intno <= 13);
 
-    qemu_log_mask(CPU_LOG_INT, "check_exception old: 0x%x new 0x%x\n",
+    qemu_log_mask(CPU_LOG_INT | CPU_LOG_EXCEPTION, "check_exception old: 0x%x new 0x%x\n",
                 env->old_exception, intno);
 
 #if !defined(CONFIG_USER_ONLY)
diff qemu1/include/qemu/log.h qemu2/include/qemu/log.h
--- qemu1/include/qemu/log.h
+++ qemu2/include/qemu/log.h
@@ -64,6 +64,7 @@ static inline bool qemu_log_separate(void)
 #define CPU_LOG_PLUGIN     (1 << 18)
 /* LOG_STRACE is used for user-mode strace logging. */
 #define LOG_STRACE         (1 << 19)
+#define CPU_LOG_EXCEPTION  (1 << 29)
 
 /* Lock output for a series of related logs.  Since this is not needed
  * for a single qemu_log / qemu_log_mask / qemu_log_mask_and_addr, we

This patch fixes some dumb things that QEMU does on OSX:

1. a confirm dialogue to quit really screws with an edit-compile-test cycle, especially since you can't press enter to confirm
2. the display scaling can't be controlled, so everything looks ugly

updated for qemu 5.0.0-rc4

works for qemu 5.1.0