SPARC64: split cpu_get_phys_page_debug() from cpu_get_phys_page_nofault()

This patch makes cpu_get_phys_page_debug() independent from
cpu_get_phys_page_nofault() in advance of implementing nonfaulting load.
This also modifies cpu_get_phys_page_nofault() to be compiled only on
TARGET_SPARC64 because it is not required on SPARC32.
Signed-off-by: NTsuneo Saito <tsnsaito@gmail.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

target-sparc/cpu.h

@@ -541,9 +541,11 @@ static inline int tlb_compare_context(const SparcTLBEntry *tlb,
 #if !defined(CONFIG_USER_ONLY)
 void cpu_unassigned_access(CPUState *env1, target_phys_addr_t addr,
                            int is_write, int is_exec, int is_asi, int size);
+#if defined(TARGET_SPARC64)
 target_phys_addr_t cpu_get_phys_page_nofault(CPUState *env, target_ulong addr,
                                            int mmu_idx);
 
+#endif
 #endif
 int cpu_sparc_signal_handler(int host_signum, void *pinfo, void *puc);
 

target-sparc/helper.c

@@ -746,6 +746,7 @@ static int cpu_sparc_get_phys_page(CPUState *env, target_phys_addr_t *phys,
                                 mmu_idx, &page_size);
 }
 
+#if defined(TARGET_SPARC64)
 target_phys_addr_t cpu_get_phys_page_nofault(CPUState *env, target_ulong addr,
                                            int mmu_idx)
 {
@@ -760,10 +761,22 @@ target_phys_addr_t cpu_get_phys_page_nofault(CPUState *env, target_ulong addr,
         return -1;
     return phys_addr;
 }
+#endif
 
 target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
 {
-    return cpu_get_phys_page_nofault(env, addr, cpu_mmu_index(env));
+    target_phys_addr_t phys_addr;
+    int mmu_idx = cpu_mmu_index(env);
+
+    if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 2, mmu_idx) != 0) {
+        if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 0, mmu_idx) != 0) {
+            return -1;
+        }
+    }
+    if (cpu_get_physical_page_desc(phys_addr) == IO_MEM_UNASSIGNED) {
+        return -1;
+    }
+    return phys_addr;
 }
 #endif