cris: Avoid debug clobbering for both I & D MMU state.

Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@axis.com>

target-cris/helper.c

@@ -78,7 +78,7 @@ int cpu_cris_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
 
 	D(printf ("%s addr=%x pc=%x rw=%x\n", __func__, address, env->pc, rw));
 	miss = cris_mmu_translate(&res, env, address & TARGET_PAGE_MASK,
-				  rw, mmu_idx);
+				  rw, mmu_idx, 0);
 	if (miss)
 	{
 		if (env->exception_index == EXCP_BUSFAULT)
@@ -248,26 +248,15 @@ void do_interrupt(CPUState *env)
 target_phys_addr_t cpu_get_phys_page_debug(CPUState * env, target_ulong addr)
 {
 	uint32_t phy = addr;
-	uint32_t r_cause, r_tlb_sel, rand_lfsr;
 	struct cris_mmu_result res;
 	int miss;
 
-	/* Save MMU state.  */
-	r_tlb_sel = env->sregs[SFR_RW_MM_TLB_SEL];
-	r_cause = env->sregs[SFR_R_MM_CAUSE];
-	rand_lfsr = env->mmu_rand_lfsr;
-
-	miss = cris_mmu_translate(&res, env, addr, 0, 0);
+	miss = cris_mmu_translate(&res, env, addr, 0, 0, 1);
 	/* If D TLB misses, try I TLB.  */
 	if (miss) {
-		miss = cris_mmu_translate(&res, env, addr, 2, 0);
+		miss = cris_mmu_translate(&res, env, addr, 2, 0, 1);
 	}
 
-	/* Restore MMU state.  */
-	env->sregs[SFR_RW_MM_TLB_SEL] = r_tlb_sel;
-	env->sregs[SFR_R_MM_CAUSE] = r_cause;
-	env->mmu_rand_lfsr = rand_lfsr;
-
 	if (!miss)
 		phy = res.phy;
 	D(fprintf(stderr, "%s %x -> %x\n", __func__, addr, phy));

target-cris/mmu.c

@@ -135,7 +135,7 @@ static void dump_tlb(CPUState *env, int mmu)
 /* rw 0 = read, 1 = write, 2 = exec.  */
 static int cris_mmu_translate_page(struct cris_mmu_result *res,
 				   CPUState *env, uint32_t vaddr,
-				   int rw, int usermode)
+				   int rw, int usermode, int debug)
 {
 	unsigned int vpage;
 	unsigned int idx;
@@ -261,7 +261,7 @@ static int cris_mmu_translate_page(struct cris_mmu_result *res,
 		set = env->mmu_rand_lfsr & 3;
 	}
 
-	if (!match) {
+	if (!match && !debug) {
 		cris_mmu_update_rand_lfsr(env);
 
 		/* Compute index.  */
@@ -330,7 +330,7 @@ void cris_mmu_flush_pid(CPUState *env, uint32_t pid)
 
 int cris_mmu_translate(struct cris_mmu_result *res,
 		       CPUState *env, uint32_t vaddr,
-		       int rw, int mmu_idx)
+		       int rw, int mmu_idx, int debug)
 {
 	int seg;
 	int miss = 0;
@@ -357,9 +357,10 @@ int cris_mmu_translate(struct cris_mmu_result *res,
 		base = cris_mmu_translate_seg(env, seg);
                 res->phy = base | (0x0fffffff & vaddr);
 		res->prot = PAGE_BITS;
+	} else {
+		miss = cris_mmu_translate_page(res, env, vaddr, rw,
+					       is_user, debug);
 	}
-	else
-		miss = cris_mmu_translate_page(res, env, vaddr, rw, is_user);
   done:
 	env->pregs[PR_SRS] = old_srs;
 	return miss;

target-cris/mmu.h

@@ -14,4 +14,4 @@ void cris_mmu_init(CPUState *env);
 void cris_mmu_flush_pid(CPUState *env, uint32_t pid);
 int cris_mmu_translate(struct cris_mmu_result *res,
 		       CPUState *env, uint32_t vaddr,
-		       int rw, int mmu_idx);
+		       int rw, int mmu_idx, int debug);