Replace is_user variable with mmu_idx in softmmu core,

  allowing support of more than 2 mmu access modes.
Add backward compatibility is_user variable in targets code when needed.
Implement per target cpu_mmu_index function, avoiding duplicated code
  and #ifdef TARGET_xxx in softmmu core functions.
Implement per target mmu modes definitions. As an example, add PowerPC
  hypervisor mode definition and Alpha executive and kernel modes definitions.
Optimize PowerPC case, precomputing mmu_idx when MSR register changes
  and using the same definition in code translation code.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3384 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 12 insertions, 12 deletions

diff --git a/target-alpha/op_helper.c b/target-alpha/op_helper.c
index deac6c2596..badb85d698 100644
--- a/target-alpha/op_helper.c
+++ b/target-alpha/op_helper.c
@@ -1164,20 +1164,20 @@ void helper_mtpr (int iprn)
 void helper_ld_phys_to_virt (void)
 {
     uint64_t tlb_addr, physaddr;
-    int index, is_user;
+    int index, mmu_idx;
     void *retaddr;
 
-    is_user = (env->ps >> 3) & 3;
+    mmu_idx = cpu_mmu_index(env);
     index = (T0 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
  redo:
-    tlb_addr = env->tlb_table[is_user][index].addr_read;
+    tlb_addr = env->tlb_table[mmu_idx][index].addr_read;
     if ((T0 & TARGET_PAGE_MASK) ==
         (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
-        physaddr = T0 + env->tlb_table[is_user][index].addend;
+        physaddr = T0 + env->tlb_table[mmu_idx][index].addend;
     } else {
         /* the page is not in the TLB : fill it */
         retaddr = GETPC();
-        tlb_fill(T0, 0, is_user, retaddr);
+        tlb_fill(T0, 0, mmu_idx, retaddr);
         goto redo;
     }
     T0 = physaddr;
@@ -1186,20 +1186,20 @@ void helper_ld_phys_to_virt (void)
 void helper_st_phys_to_virt (void)
 {
     uint64_t tlb_addr, physaddr;
-    int index, is_user;
+    int index, mmu_idx;
     void *retaddr;
 
-    is_user = (env->ps >> 3) & 3;
+    mmu_idx = cpu_mmu_index(env);
     index = (T0 >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
  redo:
-    tlb_addr = env->tlb_table[is_user][index].addr_write;
+    tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
     if ((T0 & TARGET_PAGE_MASK) ==
         (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
-        physaddr = T0 + env->tlb_table[is_user][index].addend;
+        physaddr = T0 + env->tlb_table[mmu_idx][index].addend;
     } else {
         /* the page is not in the TLB : fill it */
         retaddr = GETPC();
-        tlb_fill(T0, 1, is_user, retaddr);
+        tlb_fill(T0, 1, mmu_idx, retaddr);
         goto redo;
     }
     T0 = physaddr;
@@ -1223,7 +1223,7 @@ void helper_st_phys_to_virt (void)
    NULL, it means that the function was called in C code (i.e. not
    from generated code or from helper.c) */
 /* XXX: fix it to restore all registers */
-void tlb_fill (target_ulong addr, int is_write, int is_user, void *retaddr)
+void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
 {
     TranslationBlock *tb;
     CPUState *saved_env;
@@ -1234,7 +1234,7 @@ void tlb_fill (target_ulong addr, int is_write, int is_user, void *retaddr)
        generated code */
     saved_env = env;
     env = cpu_single_env;
-    ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, is_user, 1);
+    ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
     if (!likely(ret == 0)) {
         if (likely(retaddr)) {
             /* now we have a real cpu fault */