target/unicore32: Convert to CPUClass::tlb_fill

Remove the user-only functions, as we no longer
have a user-only config.

Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/unicore32/cpu.c

@@ -138,11 +138,8 @@ static void uc32_cpu_class_init(ObjectClass *oc, void *data)
     cc->cpu_exec_interrupt = uc32_cpu_exec_interrupt;
     cc->dump_state = uc32_cpu_dump_state;
     cc->set_pc = uc32_cpu_set_pc;
-#ifdef CONFIG_USER_ONLY
-    cc->handle_mmu_fault = uc32_cpu_handle_mmu_fault;
-#else
+    cc->tlb_fill = uc32_cpu_tlb_fill;
     cc->get_phys_page_debug = uc32_cpu_get_phys_page_debug;
-#endif
     cc->tcg_initialize = uc32_translate_init;
     dc->vmsd = &vmstate_uc32_cpu;
 }

target/unicore32/cpu.h

@@ -178,8 +178,9 @@ static inline void cpu_get_tb_cpu_state(CPUUniCore32State *env, target_ulong *pc
     }
 }
 
-int uc32_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int size, int rw,
-                              int mmu_idx);
+bool uc32_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
+                       MMUAccessType access_type, int mmu_idx,
+                       bool probe, uintptr_t retaddr);
 void uc32_translate_init(void);
 void switch_mode(CPUUniCore32State *, int);
 

target/unicore32/helper.c

@@ -215,29 +215,6 @@ void helper_cp1_putc(target_ulong x)
 }
 #endif
 
-#ifdef CONFIG_USER_ONLY
-void switch_mode(CPUUniCore32State *env, int mode)
-{
-    UniCore32CPU *cpu = uc32_env_get_cpu(env);
-
-    if (mode != ASR_MODE_USER) {
-        cpu_abort(CPU(cpu), "Tried to switch out of user mode\n");
-    }
-}
-
-void uc32_cpu_do_interrupt(CPUState *cs)
-{
-    cpu_abort(cs, "NO interrupt in user mode\n");
-}
-
-int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size,
-                              int access_type, int mmu_idx)
-{
-    cpu_abort(cs, "NO mmu fault in user mode\n");
-    return 1;
-}
-#endif
-
 bool uc32_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
 {
     if (interrupt_request & CPU_INTERRUPT_HARD) {

target/unicore32/op_helper.c

@@ -242,17 +242,3 @@ uint32_t HELPER(ror_cc)(CPUUniCore32State *env, uint32_t x, uint32_t i)
         return ((uint32_t)x >> shift) | (x << (32 - shift));
     }
 }
-
-#ifndef CONFIG_USER_ONLY
-void tlb_fill(CPUState *cs, target_ulong addr, int size,
-              MMUAccessType access_type, int mmu_idx, uintptr_t retaddr)
-{
-    int ret;
-
-    ret = uc32_cpu_handle_mmu_fault(cs, addr, size, access_type, mmu_idx);
-    if (unlikely(ret)) {
-        /* now we have a real cpu fault */
-        cpu_loop_exit_restore(cs, retaddr);
-    }
-}
-#endif

target/unicore32/softmmu.c

@@ -215,8 +215,9 @@ do_fault:
     return code;
 }
 
-int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size,
-                              int access_type, int mmu_idx)
+bool uc32_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
+                       MMUAccessType access_type, int mmu_idx,
+                       bool probe, uintptr_t retaddr)
 {
     UniCore32CPU *cpu = UNICORE32_CPU(cs);
     CPUUniCore32State *env = &cpu->env;
@@ -257,7 +258,11 @@ int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size,
         phys_addr &= TARGET_PAGE_MASK;
         address &= TARGET_PAGE_MASK;
         tlb_set_page(cs, address, phys_addr, prot, mmu_idx, page_size);
-        return 0;
+        return true;
+    }
+
+    if (probe) {
+        return false;
     }
 
     env->cp0.c3_faultstatus = ret;
@@ -267,7 +272,13 @@ int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size,
     } else {
         cs->exception_index = UC32_EXCP_DTRAP;
     }
-    return ret;
+    cpu_loop_exit_restore(cs, retaddr);
+}
+
+void tlb_fill(CPUState *cs, target_ulong addr, int size,
+              MMUAccessType access_type, int mmu_idx, uintptr_t retaddr)
+{
+    uc32_cpu_tlb_fill(cs, addr, size, access_type, mmu_idx, false, retaddr);
 }
 
 hwaddr uc32_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)