MMU support

[qemu] / exec.c

diff --git a/exec.c b/exec.c
index 2e84f55..f7fdc03 100644 (file)
--- a/exec.c
+++ b/exec.c
@@ -30,7 +30,7 @@
 #include "exec.h"
 
 //#define DEBUG_TB_INVALIDATE
-#define DEBUG_FLUSH
+//#define DEBUG_FLUSH
 
 /* make various TB consistency checks */
 //#define DEBUG_TB_CHECK 
@@ -70,7 +70,7 @@ unsigned long host_page_mask;
 
 static PageDesc *l1_map[L1_SIZE];
 
-void page_init(void)
+static void page_init(void)
 {
     /* NOTE: we can always suppose that host_page_size >=
        TARGET_PAGE_SIZE */
@@ -190,10 +190,11 @@ void page_set_flags(unsigned long start, unsigned long end, int flags)
     spin_unlock(&tb_lock);
 }
 
-void cpu_x86_tblocks_init(void)
+void cpu_exec_init(void)
 {
     if (!code_gen_ptr) {
         code_gen_ptr = code_gen_buffer;
+        page_init();
     }
 }
 
@@ -562,3 +563,49 @@ TranslationBlock *tb_find_pc(unsigned long tc_ptr)
     } 
     return &tbs[m_max];
 }
+
+void cpu_abort(CPUState *env, const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    fprintf(stderr, "qemu: fatal: ");
+    vfprintf(stderr, fmt, ap);
+    fprintf(stderr, "\n");
+#ifdef TARGET_I386
+    cpu_x86_dump_state(env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP);
+#endif
+    va_end(ap);
+    abort();
+}
+
+#ifdef TARGET_I386
+/* unmap all maped pages and flush all associated code */
+void page_unmap(void)
+{
+    PageDesc *p, *pmap;
+    unsigned long addr;
+    int i, j, ret;
+
+    for(i = 0; i < L1_SIZE; i++) {
+        pmap = l1_map[i];
+        if (pmap) {
+            p = pmap;
+            for(j = 0;j < L2_SIZE; j++) {
+                if (p->flags & PAGE_VALID) {
+                    addr = (i << (32 - L1_BITS)) | (j << TARGET_PAGE_BITS);
+                    ret = munmap((void *)addr, TARGET_PAGE_SIZE);
+                    if (ret != 0) {
+                        fprintf(stderr, "Could not unmap page 0x%08lx\n", addr);
+                        exit(1);
+                    }
+                }
+                p++;
+            }
+            free(pmap);
+            l1_map[i] = NULL;
+        }
+    }
+    tb_flush();
+}
+#endif