Clean up MMIO TLB handling.

The IO index is now stored in its own field, instead of being wedged
into the vaddr field.  This eliminates the ROMD and watchpoint host
pointer weirdness.  The IO index space is expanded by 1 bit, and
several additional bits are made available in the TLB vaddr field.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4704 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 24 insertions, 8 deletions

diff --git a/gdbstub.c b/gdbstub.c
index 414c390..d4ca6f3 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -1117,21 +1117,37 @@ static int gdb_handle_packet(GDBState *s, CPUState *env, const char *line_buf)
         if (*p == ',')
             p++;
         len = strtoull(p, (char **)&p, 16);
-        if (type == 0 || type == 1) {
+        switch (type) {
+        case 0:
+        case 1:
             if (cpu_breakpoint_insert(env, addr) < 0)
                 goto breakpoint_error;
             put_packet(s, "OK");
+            break;
 #ifndef CONFIG_USER_ONLY
-        } else if (type == 2) {
-            if (cpu_watchpoint_insert(env, addr) < 0)
+        case 2:
+            type = PAGE_WRITE;
+            goto insert_watchpoint;
+        case 3:
+            type = PAGE_READ;
+            goto insert_watchpoint;
+        case 4:
+            type = PAGE_READ | PAGE_WRITE;
+        insert_watchpoint:
+            if (cpu_watchpoint_insert(env, addr, type) < 0)
                 goto breakpoint_error;
             put_packet(s, "OK");
+            break;
 #endif
-        } else {
-        breakpoint_error:
-            put_packet(s, "E22");
+        default:
+            put_packet(s, "");
+            break;
         }
         break;
+    breakpoint_error:
+        put_packet(s, "E22");
+        break;
+
     case 'z':
         type = strtoul(p, (char **)&p, 16);
         if (*p == ',')
@@ -1144,12 +1160,12 @@ static int gdb_handle_packet(GDBState *s, CPUState *env, const char *line_buf)
             cpu_breakpoint_remove(env, addr);
             put_packet(s, "OK");
 #ifndef CONFIG_USER_ONLY
-        } else if (type == 2) {
+        } else if (type >= 2 || type <= 4) {
             cpu_watchpoint_remove(env, addr);
             put_packet(s, "OK");
 #endif
         } else {
-            goto breakpoint_error;
+            put_packet(s, "");
         }
         break;
     case 'q':