cpu: Turn cpu_handle_mmu_fault() into a CPUClass hook

Note that while such functions may exist both for *-user and softmmu,
only *-user uses the CPUState hook, while softmmu reuses the prototype
for calling it directly.

Signed-off-by: Andreas Färber <afaerber@suse.de>

diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index f5b0d7a8e1cc56961dc6e93f294f2ce55943f9dc..5af434dde68e68626c144d9c943dbb05f22d5f68 100644 (file)
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -83,6 +83,7 @@ struct TranslationBlock;
  * @set_pc: Callback for setting the Program Counter register.
  * @synchronize_from_tb: Callback for synchronizing state from a TCG
  * #TranslationBlock.
+ * @handle_mmu_fault: Callback for handling an MMU fault.
  * @get_phys_page_debug: Callback for obtaining a physical address.
  * @gdb_read_register: Callback for letting GDB read a register.
  * @gdb_write_register: Callback for letting GDB write a register.
@@ -117,6 +118,8 @@ typedef struct CPUClass {
                                Error **errp);
     void (*set_pc)(CPUState *cpu, vaddr value);
     void (*synchronize_from_tb)(CPUState *cpu, struct TranslationBlock *tb);
+    int (*handle_mmu_fault)(CPUState *cpu, vaddr address, int rw,
+                            int mmu_index);
     hwaddr (*get_phys_page_debug)(CPUState *cpu, vaddr addr);
     int (*gdb_read_register)(CPUState *cpu, uint8_t *buf, int reg);
     int (*gdb_write_register)(CPUState *cpu, uint8_t *buf, int reg);

diff --git a/target-alpha/cpu.c b/target-alpha/cpu.c
index cf2a3156d16768e71757d7ba3cbb798894262506..4d8263f37d6548f5b6190fab4e631fe2e60f0cd0 100644 (file)
--- a/target-alpha/cpu.c
+++ b/target-alpha/cpu.c
@@ -288,7 +288,9 @@ static void alpha_cpu_class_init(ObjectClass *oc, void *data)
     cc->set_pc = alpha_cpu_set_pc;
     cc->gdb_read_register = alpha_cpu_gdb_read_register;
     cc->gdb_write_register = alpha_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = alpha_cpu_handle_mmu_fault;
+#else
     cc->do_unassigned_access = alpha_cpu_unassigned_access;
     cc->get_phys_page_debug = alpha_cpu_get_phys_page_debug;
     dc->vmsd = &vmstate_alpha_cpu;

diff --git a/target-alpha/cpu.h b/target-alpha/cpu.h
index a1721241702c7a07ef3ad0374cb56817c91d79a8..07d9f63d1fd0583ec773ca7d80ceb09530224262 100644 (file)
--- a/target-alpha/cpu.h
+++ b/target-alpha/cpu.h
@@ -446,9 +446,8 @@ int cpu_alpha_exec(CPUAlphaState *s);
    is returned if the signal was handled by the virtual CPU.  */
 int cpu_alpha_signal_handler(int host_signum, void *pinfo,
                              void *puc);
-int cpu_alpha_handle_mmu_fault (CPUAlphaState *env, uint64_t address, int rw,
-                                int mmu_idx);
-#define cpu_handle_mmu_fault cpu_alpha_handle_mmu_fault
+int alpha_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+                               int mmu_idx);
 void do_restore_state(CPUAlphaState *, uintptr_t retaddr);
 void QEMU_NORETURN dynamic_excp(CPUAlphaState *, uintptr_t, int, int);
 void QEMU_NORETURN arith_excp(CPUAlphaState *, uintptr_t, int, uint64_t);

diff --git a/target-alpha/helper.c b/target-alpha/helper.c
index 98ddcdf4e378ba5fa6dcde76f6bcd349d93f360f..9c94b4382cb7a7cd3e74bab7261fc6e7ea6dba5e 100644 (file)
--- a/target-alpha/helper.c
+++ b/target-alpha/helper.c
@@ -168,11 +168,13 @@ void helper_store_fpcr(CPUAlphaState *env, uint64_t val)
 }
 
 #if defined(CONFIG_USER_ONLY)
-int cpu_alpha_handle_mmu_fault(CPUAlphaState *env, target_ulong address,
+int alpha_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
                                int rw, int mmu_idx)
 {
-    env->exception_index = EXCP_MMFAULT;
-    env->trap_arg0 = address;
+    AlphaCPU *cpu = ALPHA_CPU(cs);
+
+    cpu->env.exception_index = EXCP_MMFAULT;
+    cpu->env.trap_arg0 = address;
     return 1;
 }
 #else
@@ -326,9 +328,11 @@ hwaddr alpha_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
     return (fail >= 0 ? -1 : phys);
 }
 
-int cpu_alpha_handle_mmu_fault(CPUAlphaState *env, target_ulong addr, int rw,
+int alpha_cpu_handle_mmu_fault(CPUState *cs, vaddr addr, int rw,
                                int mmu_idx)
 {
+    AlphaCPU *cpu = ALPHA_CPU(cs);
+    CPUAlphaState *env = &cpu->env;
     target_ulong phys;
     int prot, fail;
 

diff --git a/target-alpha/mem_helper.c b/target-alpha/mem_helper.c
index e1aba64416af81468ba0c6ee35f5bbd41b200e6a..d195935a96e7b981f8597d3a706c351e843709e1 100644 (file)
--- a/target-alpha/mem_helper.c
+++ b/target-alpha/mem_helper.c
@@ -153,9 +153,10 @@ void alpha_cpu_unassigned_access(CPUState *cs, hwaddr addr,
 void tlb_fill(CPUAlphaState *env, target_ulong addr, int is_write,
               int mmu_idx, uintptr_t retaddr)
 {
+    AlphaCPU *cpu = alpha_env_get_cpu(env);
     int ret;
 
-    ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = alpha_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (unlikely(ret != 0)) {
         if (retaddr) {
             cpu_restore_state(env, retaddr);

diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index d792a912e74a5ae1adfe29c775af30b998a8d5f2..be17d725373b38ee8bb649c1152825cf6da4f4ac 100644 (file)
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -1013,7 +1013,9 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
     cc->set_pc = arm_cpu_set_pc;
     cc->gdb_read_register = arm_cpu_gdb_read_register;
     cc->gdb_write_register = arm_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = arm_cpu_handle_mmu_fault;
+#else
     cc->get_phys_page_debug = arm_cpu_get_phys_page_debug;
     cc->vmsd = &vmstate_arm_cpu;
 #endif

diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 00d91d123179457c2302d48a0e99e02f5dc20ee3..bf37cd60d0a28a0fbedbf07fb5049f31a0267992 100644 (file)
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -339,9 +339,8 @@ static inline bool is_a64(CPUARMState *env)
    is returned if the signal was handled by the virtual CPU.  */
 int cpu_arm_signal_handler(int host_signum, void *pinfo,
                            void *puc);
-int cpu_arm_handle_mmu_fault (CPUARMState *env, target_ulong address, int rw,
-                              int mmu_idx);
-#define cpu_handle_mmu_fault cpu_arm_handle_mmu_fault
+int arm_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+                             int mmu_idx);
 
 /* SCTLR bit meanings. Several bits have been reused in newer
  * versions of the architecture; in that case we define constants

diff --git a/target-arm/helper.c b/target-arm/helper.c
index f64be6f36d2496fe92cc11c8bb729f4cc6f2f2b4..d3e68a6e2400284b054312ba58b966f7bcd41f5d 100644 (file)
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -2655,9 +2655,12 @@ void arm_cpu_do_interrupt(CPUState *cs)
     env->exception_index = -1;
 }
 
-int cpu_arm_handle_mmu_fault (CPUARMState *env, target_ulong address, int rw,
-                              int mmu_idx)
+int arm_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
+                             int mmu_idx)
 {
+    ARMCPU *cpu = ARM_CPU(cs);
+    CPUARMState *env = &cpu->env;
+
     if (rw == 2) {
         env->exception_index = EXCP_PREFETCH_ABORT;
         env->cp15.c6_insn = address;
@@ -3623,9 +3626,11 @@ static inline int get_phys_addr(CPUARMState *env, uint32_t address,
     }
 }
 
-int cpu_arm_handle_mmu_fault (CPUARMState *env, target_ulong address,
-                              int access_type, int mmu_idx)
+int arm_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
+                             int access_type, int mmu_idx)
 {
+    ARMCPU *cpu = ARM_CPU(cs);
+    CPUARMState *env = &cpu->env;
     hwaddr phys_addr;
     target_ulong page_size;
     int prot;

diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c
index 5851e041a05a6616fb777b40b0458efbd73379ec..ced6a7b83caaa339f4b33efbdd566ea74617648e 100644 (file)
--- a/target-arm/op_helper.c
+++ b/target-arm/op_helper.c
@@ -74,9 +74,10 @@ uint32_t HELPER(neon_tbl)(CPUARMState *env, uint32_t ireg, uint32_t def,
 void tlb_fill(CPUARMState *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    ARMCPU *cpu = arm_env_get_cpu(env);
     int ret;
 
-    ret = cpu_arm_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = arm_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (unlikely(ret)) {
         if (retaddr) {
             /* now we have a real cpu fault */

diff --git a/target-cris/cpu.c b/target-cris/cpu.c
index 12c90eef340c822b60cbb3bdec4dadc2c221cc5c..ff27e7f773a8dd15b6b101550bf05e3474f7fa29 100644 (file)
--- a/target-cris/cpu.c
+++ b/target-cris/cpu.c
@@ -283,7 +283,9 @@ static void cris_cpu_class_init(ObjectClass *oc, void *data)
     cc->set_pc = cris_cpu_set_pc;
     cc->gdb_read_register = cris_cpu_gdb_read_register;
     cc->gdb_write_register = cris_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = cris_cpu_handle_mmu_fault;
+#else
     cc->get_phys_page_debug = cris_cpu_get_phys_page_debug;
 #endif
 

diff --git a/target-cris/cpu.h b/target-cris/cpu.h
index 1287cad4ac5706d48c377cc7a144dd3ef9688138..6cc0616523971e4c056afc84f2674bc3ee24bea6 100644 (file)
--- a/target-cris/cpu.h
+++ b/target-cris/cpu.h
@@ -247,9 +247,8 @@ static inline int cpu_mmu_index (CPUCRISState *env)
        return !!(env->pregs[PR_CCS] & U_FLAG);
 }
 
-int cpu_cris_handle_mmu_fault(CPUCRISState *env, target_ulong address, int rw,
+int cris_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
                               int mmu_idx);
-#define cpu_handle_mmu_fault cpu_cris_handle_mmu_fault
 
 /* Support function regs.  */
 #define SFR_RW_GC_CFG      0][0

diff --git a/target-cris/helper.c b/target-cris/helper.c
index c9405821325745b2b367112988bd97469fb1816f..857cc99b29d5eee78b4ef1bd23e278515579d0bc 100644 (file)
--- a/target-cris/helper.c
+++ b/target-cris/helper.c
@@ -50,14 +50,14 @@ void crisv10_cpu_do_interrupt(CPUState *cs)
     cris_cpu_do_interrupt(cs);
 }
 
-int cpu_cris_handle_mmu_fault(CPUCRISState * env, target_ulong address, int rw,
+int cris_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
                               int mmu_idx)
 {
-    CRISCPU *cpu = cris_env_get_cpu(env);
+    CRISCPU *cpu = CRIS_CPU(cs);
 
-    env->exception_index = 0xaa;
-    env->pregs[PR_EDA] = address;
-    cpu_dump_state(CPU(cpu), stderr, fprintf, 0);
+    cpu->env.exception_index = 0xaa;
+    cpu->env.pregs[PR_EDA] = address;
+    cpu_dump_state(cs, stderr, fprintf, 0);
     return 1;
 }
 
@@ -73,23 +73,25 @@ static void cris_shift_ccs(CPUCRISState *env)
     env->pregs[PR_CCS] = ccs;
 }
 
-int cpu_cris_handle_mmu_fault(CPUCRISState *env, target_ulong address, int rw,
+int cris_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
                               int mmu_idx)
 {
-    D(CPUState *cpu = CPU(cris_env_get_cpu(env)));
+    CRISCPU *cpu = CRIS_CPU(cs);
+    CPUCRISState *env = &cpu->env;
     struct cris_mmu_result res;
     int prot, miss;
     int r = -1;
     target_ulong phy;
 
-    D(printf("%s addr=%x pc=%x rw=%x\n", __func__, address, env->pc, rw));
+    D(printf("%s addr=%" VADDR_PRIx " pc=%x rw=%x\n",
+             __func__, address, env->pc, rw));
     miss = cris_mmu_translate(&res, env, address & TARGET_PAGE_MASK,
                               rw, mmu_idx, 0);
     if (miss) {
         if (env->exception_index == EXCP_BUSFAULT) {
             cpu_abort(env,
                       "CRIS: Illegal recursive bus fault."
-                      "addr=%x rw=%d\n",
+                      "addr=%" VADDR_PRIx " rw=%d\n",
                       address, rw);
         }
 
@@ -109,8 +111,8 @@ int cpu_cris_handle_mmu_fault(CPUCRISState *env, target_ulong address, int rw,
         r = 0;
     }
     if (r > 0) {
-        D_LOG("%s returns %d irqreq=%x addr=%x phy=%x vec=%x pc=%x\n",
-              __func__, r, cpu->interrupt_request, address, res.phy,
+        D_LOG("%s returns %d irqreq=%x addr=%" VADDR_PRIx " phy=%x vec=%x"
+              " pc=%x\n", __func__, r, cs->interrupt_request, address, res.phy,
               res.bf_vec, env->pc);
     }
     return r;

diff --git a/target-cris/op_helper.c b/target-cris/op_helper.c
index b580513848bb873910dfa3a72e174bdaabdd9bf0..4a6215d5d652456c3d3ad5f001c68a9c098c9756 100644 (file)
--- a/target-cris/op_helper.c
+++ b/target-cris/op_helper.c
@@ -57,11 +57,12 @@
 void tlb_fill(CPUCRISState *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    CRISCPU *cpu = cris_env_get_cpu(env);
     int ret;
 
     D_LOG("%s pc=%x tpc=%x ra=%p\n", __func__,
           env->pc, env->pregs[PR_EDA], (void *)retaddr);
-    ret = cpu_cris_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = cris_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (unlikely(ret)) {
         if (retaddr) {
             /* now we have a real cpu fault */

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index e417e673c0745cc3f1832423d2370452f733ec4e..63ba2194cb004f862ef98eb9034fbf10ef13c327 100644 (file)
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -2810,7 +2810,9 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
     cc->gdb_write_register = x86_cpu_gdb_write_register;
     cc->get_arch_id = x86_cpu_get_arch_id;
     cc->get_paging_enabled = x86_cpu_get_paging_enabled;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = x86_cpu_handle_mmu_fault;
+#else
     cc->get_memory_mapping = x86_cpu_get_memory_mapping;
     cc->get_phys_page_debug = x86_cpu_get_phys_page_debug;
     cc->write_elf64_note = x86_cpu_write_elf64_note;

diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 2403321fa118867ea33d8ce1815f039823c205e6..62641af77e6008f2d85da5291f8283762e374725 100644 (file)
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -1067,9 +1067,8 @@ void host_cpuid(uint32_t function, uint32_t count,
                 uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx);
 
 /* helper.c */
-int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
+int x86_cpu_handle_mmu_fault(CPUState *cpu, vaddr addr,
                              int is_write, int mmu_idx);
-#define cpu_handle_mmu_fault cpu_x86_handle_mmu_fault
 void x86_cpu_set_a20(X86CPU *cpu, int a20_state);
 
 static inline bool hw_local_breakpoint_enabled(unsigned long dr7, int index)

diff --git a/target-i386/helper.c b/target-i386/helper.c
index 11c7219b1017ecac2956860db61873013675fa33..696bbf55c4eceea8f9ebaf52a320174dec5ef8a4 100644 (file)
--- a/target-i386/helper.c
+++ b/target-i386/helper.c
@@ -485,9 +485,12 @@ void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
 
 #if defined(CONFIG_USER_ONLY)
 
-int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
+int x86_cpu_handle_mmu_fault(CPUState *cs, vaddr addr,
                              int is_write, int mmu_idx)
 {
+    X86CPU *cpu = X86_CPU(cs);
+    CPUX86State *env = &cpu->env;
+
     /* user mode only emulation */
     is_write &= 1;
     env->cr[2] = addr;
@@ -508,14 +511,15 @@ int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
 # endif
 
 /* return value:
-   -1 = cannot handle fault
-   0  = nothing more to do
-   1  = generate PF fault
-*/
-int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
+ * -1 = cannot handle fault
+ * 0  = nothing more to do
+ * 1  = generate PF fault
+ */
+int x86_cpu_handle_mmu_fault(CPUState *cs, vaddr addr,
                              int is_write1, int mmu_idx)
 {
-    CPUState *cs = CPU(x86_env_get_cpu(env));
+    X86CPU *cpu = X86_CPU(cs);
+    CPUX86State *env = &cpu->env;
     uint64_t ptep, pte;
     target_ulong pde_addr, pte_addr;
     int error_code, is_dirty, prot, page_size, is_write, is_user;
@@ -525,7 +529,7 @@ int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
 
     is_user = mmu_idx == MMU_USER_IDX;
 #if defined(DEBUG_MMU)
-    printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n",
+    printf("MMU fault: addr=%" VADDR_PRIx " w=%d u=%d eip=" TARGET_FMT_lx "\n",
            addr, is_write1, is_user, env->eip);
 #endif
     is_write = is_write1 & 1;

diff --git a/target-i386/mem_helper.c b/target-i386/mem_helper.c
index 319a219f8ae233bb1c4f0dd453839c8b06faaf51..5b25ccd605ae81906ddbf0745c971f3fcf8a7920 100644 (file)
--- a/target-i386/mem_helper.c
+++ b/target-i386/mem_helper.c
@@ -135,9 +135,10 @@ void helper_boundl(CPUX86State *env, target_ulong a0, int v)
 void tlb_fill(CPUX86State *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    X86CPU *cpu = x86_env_get_cpu(env);
     int ret;
 
-    ret = cpu_x86_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = x86_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (ret) {
         if (retaddr) {
             /* now we have a real cpu fault */

diff --git a/target-lm32/cpu.c b/target-lm32/cpu.c
index c157f529852abf786b79bc955443ebd3294195f7..daec4995028aab8aaf12eba2421c582317c2e800 100644 (file)
--- a/target-lm32/cpu.c
+++ b/target-lm32/cpu.c
@@ -266,7 +266,9 @@ static void lm32_cpu_class_init(ObjectClass *oc, void *data)
     cc->set_pc = lm32_cpu_set_pc;
     cc->gdb_read_register = lm32_cpu_gdb_read_register;
     cc->gdb_write_register = lm32_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = lm32_cpu_handle_mmu_fault;
+#else
     cc->get_phys_page_debug = lm32_cpu_get_phys_page_debug;
     cc->vmsd = &vmstate_lm32_cpu;
 #endif

diff --git a/target-lm32/cpu.h b/target-lm32/cpu.h
index e6314c00642a083a1000aecaa607a8a7d942cdab..b94d9b007ec3eac0c03e897d8a9c67bbdc16c0c6 100644 (file)
--- a/target-lm32/cpu.h
+++ b/target-lm32/cpu.h
@@ -231,9 +231,8 @@ static inline CPULM32State *cpu_init(const char *cpu_model)
 #define cpu_gen_code cpu_lm32_gen_code
 #define cpu_signal_handler cpu_lm32_signal_handler
 
-int cpu_lm32_handle_mmu_fault(CPULM32State *env, target_ulong address, int rw,
+int lm32_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
                               int mmu_idx);
-#define cpu_handle_mmu_fault cpu_lm32_handle_mmu_fault
 
 #include "exec/cpu-all.h"
 

diff --git a/target-lm32/helper.c b/target-lm32/helper.c
index e813e7dce2511bf78dae4050e577aa3dc5ca1d4f..ce6dd455527645fa1a543bae979571dc3dfb19a4 100644 (file)
--- a/target-lm32/helper.c
+++ b/target-lm32/helper.c
@@ -20,9 +20,11 @@
 #include "cpu.h"
 #include "qemu/host-utils.h"
 
-int cpu_lm32_handle_mmu_fault(CPULM32State *env, target_ulong address, int rw,
+int lm32_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
                               int mmu_idx)
 {
+    LM32CPU *cpu = LM32_CPU(cs);
+    CPULM32State *env = &cpu->env;
     int prot;
 
     address &= TARGET_PAGE_MASK;

diff --git a/target-lm32/op_helper.c b/target-lm32/op_helper.c
index 7189cb5cc40bd8df5154119817bfd2c1d2fc1b3e..774dc65cf20ef6fce37e5494a00d53a6fb80a859 100644 (file)
--- a/target-lm32/op_helper.c
+++ b/target-lm32/op_helper.c
@@ -153,9 +153,10 @@ uint32_t HELPER(rcsr_jrx)(CPULM32State *env)
 void tlb_fill(CPULM32State *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    LM32CPU *cpu = lm32_env_get_cpu(env);
     int ret;
 
-    ret = cpu_lm32_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = lm32_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (unlikely(ret)) {
         if (retaddr) {
             /* now we have a real cpu fault */

diff --git a/target-m68k/cpu.c b/target-m68k/cpu.c
index 7d66ed041617eeb2c8a42771d406beb3daaec763..46601dcd5dea60e195dae4c14fc25709d78e29db 100644 (file)
--- a/target-m68k/cpu.c
+++ b/target-m68k/cpu.c
@@ -200,7 +200,9 @@ static void m68k_cpu_class_init(ObjectClass *c, void *data)
     cc->set_pc = m68k_cpu_set_pc;
     cc->gdb_read_register = m68k_cpu_gdb_read_register;
     cc->gdb_write_register = m68k_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = m68k_cpu_handle_mmu_fault;
+#else
     cc->get_phys_page_debug = m68k_cpu_get_phys_page_debug;
 #endif
     dc->vmsd = &vmstate_m68k_cpu;

diff --git a/target-m68k/cpu.h b/target-m68k/cpu.h
index 5f79d2a7ef573e09af2f43ed6bfcdae50b173a28..dd1794feacf81d506ed8cfc2998757cf83a99cbf 100644 (file)
--- a/target-m68k/cpu.h
+++ b/target-m68k/cpu.h
@@ -237,9 +237,8 @@ static inline int cpu_mmu_index (CPUM68KState *env)
     return (env->sr & SR_S) == 0 ? 1 : 0;
 }
 
-int cpu_m68k_handle_mmu_fault(CPUM68KState *env, target_ulong address, int rw,
+int m68k_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
                               int mmu_idx);
-#define cpu_handle_mmu_fault cpu_m68k_handle_mmu_fault
 
 #include "exec/cpu-all.h"
 

diff --git a/target-m68k/helper.c b/target-m68k/helper.c
index a364eb1e5c9d2584686a26f891b7a1136c3ded0c..0ffb861d0886fbf7ad1deea80302844d857c8dbd 100644 (file)
--- a/target-m68k/helper.c
+++ b/target-m68k/helper.c
@@ -277,11 +277,13 @@ void m68k_switch_sp(CPUM68KState *env)
 
 #if defined(CONFIG_USER_ONLY)
 
-int cpu_m68k_handle_mmu_fault (CPUM68KState *env, target_ulong address, int rw,
-                               int mmu_idx)
+int m68k_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
+                              int mmu_idx)
 {
-    env->exception_index = EXCP_ACCESS;
-    env->mmu.ar = address;
+    M68kCPU *cpu = M68K_CPU(cs);
+
+    cpu->env.exception_index = EXCP_ACCESS;
+    cpu->env.mmu.ar = address;
     return 1;
 }
 
@@ -295,14 +297,15 @@ hwaddr m68k_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
     return addr;
 }
 
-int cpu_m68k_handle_mmu_fault (CPUM68KState *env, target_ulong address, int rw,
-                               int mmu_idx)
+int m68k_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
+                              int mmu_idx)
 {
+    M68kCPU *cpu = M68K_CPU(cs);
     int prot;
 
     address &= TARGET_PAGE_MASK;
     prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
-    tlb_set_page(env, address, address, prot, mmu_idx, TARGET_PAGE_SIZE);
+    tlb_set_page(&cpu->env, address, address, prot, mmu_idx, TARGET_PAGE_SIZE);
     return 0;
 }
 

diff --git a/target-m68k/op_helper.c b/target-m68k/op_helper.c
index bbbfd7f130c14d1e093053cf92192fd29c6a285d..539d1d6724f27d4cdc5017fe031696d8063d0b05 100644 (file)
--- a/target-m68k/op_helper.c
+++ b/target-m68k/op_helper.c
@@ -59,9 +59,10 @@ extern int semihosting_enabled;
 void tlb_fill(CPUM68KState *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    M68kCPU *cpu = m68k_env_get_cpu(env);
     int ret;
 
-    ret = cpu_m68k_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = m68k_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (unlikely(ret)) {
         if (retaddr) {
             /* now we have a real cpu fault */

diff --git a/target-microblaze/cpu.c b/target-microblaze/cpu.c
index bbda0fd820e3730561aa1b1f4017d6bc0cf81009..86ec25811e9b41eea40f7714da0191d4daa1bb20 100644 (file)
--- a/target-microblaze/cpu.c
+++ b/target-microblaze/cpu.c
@@ -171,7 +171,9 @@ static void mb_cpu_class_init(ObjectClass *oc, void *data)
     cc->set_pc = mb_cpu_set_pc;
     cc->gdb_read_register = mb_cpu_gdb_read_register;
     cc->gdb_write_register = mb_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = mb_cpu_handle_mmu_fault;
+#else
     cc->do_unassigned_access = mb_cpu_unassigned_access;
     cc->get_phys_page_debug = mb_cpu_get_phys_page_debug;
 #endif

diff --git a/target-microblaze/cpu.h b/target-microblaze/cpu.h
index 78a76617781e65963dfbddf92257b13a222c3632..6ccd06068cce3a2f7f952f4d8c00737f96c9fda6 100644 (file)
--- a/target-microblaze/cpu.h
+++ b/target-microblaze/cpu.h
@@ -332,9 +332,8 @@ static inline int cpu_mmu_index (CPUMBState *env)
         return MMU_KERNEL_IDX;
 }
 
-int cpu_mb_handle_mmu_fault(CPUMBState *env, target_ulong address, int rw,
+int mb_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
                             int mmu_idx);
-#define cpu_handle_mmu_fault cpu_mb_handle_mmu_fault
 
 static inline int cpu_interrupts_enabled(CPUMBState *env)
 {

diff --git a/target-microblaze/helper.c b/target-microblaze/helper.c
index 4fa9ce9cb5004ffb6301f30e07bccbddaac5f94e..d03f3690bb1fb31c1a44e92733e4e653595c6570 100644 (file)
--- a/target-microblaze/helper.c
+++ b/target-microblaze/helper.c
@@ -36,21 +36,23 @@ void mb_cpu_do_interrupt(CPUState *cs)
     env->regs[14] = env->sregs[SR_PC];
 }
 
-int cpu_mb_handle_mmu_fault(CPUMBState * env, target_ulong address, int rw,
+int mb_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
                             int mmu_idx)
 {
-    MicroBlazeCPU *cpu = mb_env_get_cpu(env);
+    MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
 
-    env->exception_index = 0xaa;
-    cpu_dump_state(CPU(cpu), stderr, fprintf, 0);
+    cpu->env.exception_index = 0xaa;
+    cpu_dump_state(cs, stderr, fprintf, 0);
     return 1;
 }
 
 #else /* !CONFIG_USER_ONLY */
 
-int cpu_mb_handle_mmu_fault (CPUMBState *env, target_ulong address, int rw,
-                             int mmu_idx)
+int mb_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
+                            int mmu_idx)
 {
+    MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
+    CPUMBState *env = &cpu->env;
     unsigned int hit;
     unsigned int mmu_available;
     int r = 1;

diff --git a/target-microblaze/op_helper.c b/target-microblaze/op_helper.c
index 14baa84c74ae09649fc73f5537376b58f2d27006..b70b2ea99ca123cb83bedd8b61832e318356a634 100644 (file)
--- a/target-microblaze/op_helper.c
+++ b/target-microblaze/op_helper.c
@@ -44,9 +44,10 @@
 void tlb_fill(CPUMBState *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    MicroBlazeCPU *cpu = mb_env_get_cpu(env);
     int ret;
 
-    ret = cpu_mb_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = mb_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (unlikely(ret)) {
         if (retaddr) {
             /* now we have a real cpu fault */

diff --git a/target-mips/cpu.c b/target-mips/cpu.c
index 0a2dc46144959a9b2a930b0aac2b2fea75253204..8c304ac8329696109aa7c3d723984e82ee9c5f59 100644 (file)
--- a/target-mips/cpu.c
+++ b/target-mips/cpu.c
@@ -133,7 +133,9 @@ static void mips_cpu_class_init(ObjectClass *c, void *data)
     cc->synchronize_from_tb = mips_cpu_synchronize_from_tb;
     cc->gdb_read_register = mips_cpu_gdb_read_register;
     cc->gdb_write_register = mips_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = mips_cpu_handle_mmu_fault;
+#else
     cc->do_unassigned_access = mips_cpu_unassigned_access;
     cc->get_phys_page_debug = mips_cpu_get_phys_page_debug;
 #endif

diff --git a/target-mips/cpu.h b/target-mips/cpu.h
index 6981e7a109ad4ebb122fa57b7be82648e2e8be5e..a1d85efea13222cf3f796cad5411dc0c266d7bf4 100644 (file)
--- a/target-mips/cpu.h
+++ b/target-mips/cpu.h
@@ -666,9 +666,8 @@ void cpu_mips_stop_count(CPUMIPSState *env);
 void cpu_mips_soft_irq(CPUMIPSState *env, int irq, int level);
 
 /* helper.c */
-int cpu_mips_handle_mmu_fault (CPUMIPSState *env, target_ulong address, int rw,
-                               int mmu_idx);
-#define cpu_handle_mmu_fault cpu_mips_handle_mmu_fault
+int mips_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+                              int mmu_idx);
 #if !defined(CONFIG_USER_ONLY)
 void r4k_invalidate_tlb (CPUMIPSState *env, int idx, int use_extra);
 hwaddr cpu_mips_translate_address (CPUMIPSState *env, target_ulong address,

diff --git a/target-mips/helper.c b/target-mips/helper.c
index 33e0e8863772f0eec7c8a4e108b2bedc8430c895..d8e9166c2caf2fa4444432d4e30968825df2db7a 100644 (file)
--- a/target-mips/helper.c
+++ b/target-mips/helper.c
@@ -268,9 +268,11 @@ hwaddr mips_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
 }
 #endif
 
-int cpu_mips_handle_mmu_fault (CPUMIPSState *env, target_ulong address, int rw,
-                               int mmu_idx)
+int mips_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
+                              int mmu_idx)
 {
+    MIPSCPU *cpu = MIPS_CPU(cs);
+    CPUMIPSState *env = &cpu->env;
 #if !defined(CONFIG_USER_ONLY)
     hwaddr physical;
     int prot;
@@ -279,9 +281,9 @@ int cpu_mips_handle_mmu_fault (CPUMIPSState *env, target_ulong address, int rw,
     int ret = 0;
 
 #if 0
-    log_cpu_state(CPU(mips_env_get_cpu(env)), 0);
+    log_cpu_state(cs, 0);
 #endif
-    qemu_log("%s pc " TARGET_FMT_lx " ad " TARGET_FMT_lx " rw %d mmu_idx %d\n",
+    qemu_log("%s pc " TARGET_FMT_lx " ad %" VADDR_PRIx " rw %d mmu_idx %d\n",
               __func__, env->active_tc.PC, address, rw, mmu_idx);
 
     rw &= 1;
@@ -293,8 +295,9 @@ int cpu_mips_handle_mmu_fault (CPUMIPSState *env, target_ulong address, int rw,
     access_type = ACCESS_INT;
     ret = get_physical_address(env, &physical, &prot,
                                address, rw, access_type);
-    qemu_log("%s address=" TARGET_FMT_lx " ret %d physical " TARGET_FMT_plx " prot %d\n",
-              __func__, address, ret, physical, prot);
+    qemu_log("%s address=%" VADDR_PRIx " ret %d physical " TARGET_FMT_plx
+             " prot %d\n",
+             __func__, address, ret, physical, prot);
     if (ret == TLBRET_MATCH) {
         tlb_set_page(env, address & TARGET_PAGE_MASK,
                      physical & TARGET_PAGE_MASK, prot | PAGE_EXEC,

diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index 2ef6633f472e8693815c9192a5e4419989d1865d..a62496cc3b4174d82c4c646b27f74dc48aeca28a 100644 (file)
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -2146,9 +2146,10 @@ static void do_unaligned_access(CPUMIPSState *env, target_ulong addr,
 void tlb_fill(CPUMIPSState *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    MIPSCPU *cpu = mips_env_get_cpu(env);
     int ret;
 
-    ret = cpu_mips_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = mips_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (ret) {
         do_raise_exception_err(env, env->exception_index,
                                env->error_code, retaddr);

diff --git a/target-moxie/cpu.c b/target-moxie/cpu.c
index 32c6104950d4d38f76964a788b3fccc402c3ab81..03d8eb13d7a85a5981655dcbb63d5705b34da5bb 100644 (file)
--- a/target-moxie/cpu.c
+++ b/target-moxie/cpu.c
@@ -108,7 +108,9 @@ static void moxie_cpu_class_init(ObjectClass *oc, void *data)
     cc->do_interrupt = moxie_cpu_do_interrupt;
     cc->dump_state = moxie_cpu_dump_state;
     cc->set_pc = moxie_cpu_set_pc;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = moxie_cpu_handle_mmu_fault;
+#else
     cc->get_phys_page_debug = moxie_cpu_get_phys_page_debug;
     cc->vmsd = &vmstate_moxie_cpu;
 #endif

diff --git a/target-moxie/cpu.h b/target-moxie/cpu.h
index 778cfc00c986952be8795f9ff6b322640132bcfb..c5b12a52445b5b257fb33ffe045a8439d9751e89 100644 (file)
--- a/target-moxie/cpu.h
+++ b/target-moxie/cpu.h
@@ -152,7 +152,7 @@ static inline void cpu_get_tb_cpu_state(CPUMoxieState *env, target_ulong *pc,
     *flags = 0;
 }
 
-int cpu_moxie_handle_mmu_fault(CPUMoxieState *env, target_ulong address,
+int moxie_cpu_handle_mmu_fault(CPUState *cpu, vaddr address,
                                int rw, int mmu_idx);
 
 #endif /* _CPU_MOXIE_H */

diff --git a/target-moxie/helper.c b/target-moxie/helper.c
index 7859102ab79b0a8a4dfd5a6335020931a89b1a20..8160475414399fcd4e121b024b917b70389bae38 100644 (file)
--- a/target-moxie/helper.c
+++ b/target-moxie/helper.c
@@ -49,9 +49,10 @@
 void tlb_fill(CPUMoxieState *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    MoxieCPU *cpu = moxie_env_get_cpu(env);
     int ret;
 
-    ret = cpu_moxie_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = moxie_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (unlikely(ret)) {
         if (retaddr) {
             cpu_restore_state(env, retaddr);
@@ -103,27 +104,29 @@ void helper_debug(CPUMoxieState *env)
 
 #if defined(CONFIG_USER_ONLY)
 
-void moxie_cpu_do_interrupt(CPUState *env)
+void moxie_cpu_do_interrupt(CPUState *cs)
 {
     env->exception_index = -1;
 }
 
-int cpu_moxie_handle_mmu_fault(CPUMoxieState *env, target_ulong address,
+int moxie_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
                                int rw, int mmu_idx)
 {
-    MoxieCPU *cpu = moxie_env_get_cpu(env);
+    MoxieCPU *cpu = MOXIE_CPU(cs);
 
-    env->exception_index = 0xaa;
-    env->debug1 = address;
-    cpu_dump_state(CPU(cpu), stderr, fprintf, 0);
+    cpu->env.exception_index = 0xaa;
+    cpu->env.debug1 = address;
+    cpu_dump_state(cs, stderr, fprintf, 0);
     return 1;
 }
 
 #else /* !CONFIG_USER_ONLY */
 
-int cpu_moxie_handle_mmu_fault(CPUMoxieState *env, target_ulong address,
+int moxie_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
                                int rw, int mmu_idx)
 {
+    MoxieCPU *cpu = MOXIE_CPU(cs);
+    CPUMoxieState *env = &cpu->env;
     MoxieMMUResult res;
     int prot, miss;
     target_ulong phy;

diff --git a/target-openrisc/cpu.c b/target-openrisc/cpu.c
index 0b2ffb23f0bed6b2fc6165e1ed1863a2ffcc1acc..99e4aa7c67ba3446f63c674c9495a8ab74a88d77 100644 (file)
--- a/target-openrisc/cpu.c
+++ b/target-openrisc/cpu.c
@@ -165,7 +165,9 @@ static void openrisc_cpu_class_init(ObjectClass *oc, void *data)
     cc->set_pc = openrisc_cpu_set_pc;
     cc->gdb_read_register = openrisc_cpu_gdb_read_register;
     cc->gdb_write_register = openrisc_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = openrisc_cpu_handle_mmu_fault;
+#else
     cc->get_phys_page_debug = openrisc_cpu_get_phys_page_debug;
     dc->vmsd = &vmstate_openrisc_cpu;
 #endif

diff --git a/target-openrisc/cpu.h b/target-openrisc/cpu.h
index ae9d17f10290155d2441f3519e92c2bf61bbde25..660bb4f1e7d6e7feb67c8413cf48fba3fd0260ea 100644 (file)
--- a/target-openrisc/cpu.h
+++ b/target-openrisc/cpu.h
@@ -353,15 +353,13 @@ hwaddr openrisc_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 int openrisc_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
 int openrisc_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
 void openrisc_translate_init(void);
-int cpu_openrisc_handle_mmu_fault(CPUOpenRISCState *env,
-                                  target_ulong address,
+int openrisc_cpu_handle_mmu_fault(CPUState *cpu, vaddr address,
                                   int rw, int mmu_idx);
 int cpu_openrisc_signal_handler(int host_signum, void *pinfo, void *puc);
 
 #define cpu_list cpu_openrisc_list
 #define cpu_exec cpu_openrisc_exec
 #define cpu_gen_code cpu_openrisc_gen_code
-#define cpu_handle_mmu_fault cpu_openrisc_handle_mmu_fault
 #define cpu_signal_handler cpu_openrisc_signal_handler
 
 #ifndef CONFIG_USER_ONLY

diff --git a/target-openrisc/mmu.c b/target-openrisc/mmu.c
index dd487bd0d10be737c25573e4ff1a21e53fd0e5ea..1fd0a0a3faa86987fbd3e1c2688390388d8b7535 100644 (file)
--- a/target-openrisc/mmu.c
+++ b/target-openrisc/mmu.c
@@ -174,19 +174,19 @@ static void cpu_openrisc_raise_mmu_exception(OpenRISCCPU *cpu,
 }
 
 #ifndef CONFIG_USER_ONLY
-int cpu_openrisc_handle_mmu_fault(CPUOpenRISCState *env,
-                                  target_ulong address, int rw, int mmu_idx)
+int openrisc_cpu_handle_mmu_fault(CPUState *cs,
+                                  vaddr address, int rw, int mmu_idx)
 {
+    OpenRISCCPU *cpu = OPENRISC_CPU(cs);
     int ret = 0;
     hwaddr physical = 0;
     int prot = 0;
-    OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
 
     ret = cpu_openrisc_get_phys_addr(cpu, &physical, &prot,
                                      address, rw);
 
     if (ret == TLBRET_MATCH) {
-        tlb_set_page(env, address & TARGET_PAGE_MASK,
+        tlb_set_page(&cpu->env, address & TARGET_PAGE_MASK,
                      physical & TARGET_PAGE_MASK, prot,
                      mmu_idx, TARGET_PAGE_SIZE);
         ret = 0;
@@ -198,11 +198,11 @@ int cpu_openrisc_handle_mmu_fault(CPUOpenRISCState *env,
     return ret;
 }
 #else
-int cpu_openrisc_handle_mmu_fault(CPUOpenRISCState *env,
-                                  target_ulong address, int rw, int mmu_idx)
+int openrisc_cpu_handle_mmu_fault(CPUState *cs,
+                                  vaddr address, int rw, int mmu_idx)
 {
+    OpenRISCCPU *cpu = OPENRISC_CPU(cs);
     int ret = 0;
-    OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
 
     cpu_openrisc_raise_mmu_exception(cpu, address, rw, ret);
     ret = 1;

diff --git a/target-openrisc/mmu_helper.c b/target-openrisc/mmu_helper.c
index e46b09298477441045f990082e02cfa175f1b404..b023a5fb988dc13ac4b9aa04a29b2ca33d1f89c6 100644 (file)
--- a/target-openrisc/mmu_helper.c
+++ b/target-openrisc/mmu_helper.c
@@ -39,9 +39,10 @@
 void tlb_fill(CPUOpenRISCState *env, target_ulong addr, int is_write,
               int mmu_idx, uintptr_t retaddr)
 {
+    OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
     int ret;
 
-    ret = cpu_openrisc_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = openrisc_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
 
     if (ret) {
         if (retaddr) {

diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index 501dd036c4ba6fb60aa17449933e5fc63e92583b..acf6909de7ead8a9bb0cd02e90f4aff9ee0ec8ec 100644 (file)
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -1111,8 +1111,8 @@ int cpu_ppc_signal_handler (int host_signum, void *pinfo,
                             void *puc);
 void ppc_hw_interrupt (CPUPPCState *env);
 #if defined(CONFIG_USER_ONLY)
-int cpu_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
-                         int mmu_idx);
+int ppc_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+                             int mmu_idx);
 #endif
 
 #if !defined(CONFIG_USER_ONLY)

diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 0418f068a28d223d04d558d816cf31aa5120a104..703b3d8797be6fde8711e524e552a3af8849bad2 100644 (file)
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -8507,7 +8507,9 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
     cc->set_pc = ppc_cpu_set_pc;
     cc->gdb_read_register = ppc_cpu_gdb_read_register;
     cc->gdb_write_register = ppc_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = ppc_cpu_handle_mmu_fault;
+#else
     cc->get_phys_page_debug = ppc_cpu_get_phys_page_debug;
     cc->vmsd = &vmstate_ppc_cpu;
 #if defined(TARGET_PPC64)

diff --git a/target-ppc/user_only_helper.c b/target-ppc/user_only_helper.c
index 56e686efd113b6d3a066e349a0ff86e340bae3ba..a7c99e032b71b5e714a18af5115c05a30b4d3d38 100644 (file)
--- a/target-ppc/user_only_helper.c
+++ b/target-ppc/user_only_helper.c
@@ -20,9 +20,11 @@
 
 #include "cpu.h"
 
-int cpu_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
-                         int mmu_idx)
+int ppc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
+                             int mmu_idx)
 {
+    PowerPCCPU *cpu = POWERPC_CPU(cs);
+    CPUPPCState *env = &cpu->env;
     int exception, error_code;
 
     if (rw == 2) {

diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
index 5dac322f27eeadb1fdc3b20f89e284dccaf16963..993d924e520f139c980691a0f2b51cb2474e20c3 100644 (file)
--- a/target-s390x/cpu.c
+++ b/target-s390x/cpu.c
@@ -247,7 +247,9 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
     cc->set_pc = s390_cpu_set_pc;
     cc->gdb_read_register = s390_cpu_gdb_read_register;
     cc->gdb_write_register = s390_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = s390_cpu_handle_mmu_fault;
+#else
     cc->get_phys_page_debug = s390_cpu_get_phys_page_debug;
     cc->write_elf64_note = s390_cpu_write_elf64_note;
     cc->write_elf64_qemunote = s390_cpu_write_elf64_qemunote;

diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 8b4a5c01551edba3eaa09074fa9c6259fa62bebb..f332d41b9443dbf1239f91ad226281a4813d9586 100644 (file)
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -320,9 +320,8 @@ int cpu_s390x_exec(CPUS390XState *s);
    is returned if the signal was handled by the virtual CPU.  */
 int cpu_s390x_signal_handler(int host_signum, void *pinfo,
                            void *puc);
-int cpu_s390x_handle_mmu_fault (CPUS390XState *env, target_ulong address, int rw,
-                                int mmu_idx);
-#define cpu_handle_mmu_fault cpu_s390x_handle_mmu_fault
+int s390_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+                              int mmu_idx);
 
 #include "ioinst.h"
 

diff --git a/target-s390x/helper.c b/target-s390x/helper.c
index 0bae0a32fdfe657fbdc973404a936bd250c42bcb..e71e5fd5638bf1f9e44b9348e577ccfdf26ccd6a 100644 (file)
--- a/target-s390x/helper.c
+++ b/target-s390x/helper.c
@@ -91,14 +91,16 @@ void s390_cpu_do_interrupt(CPUState *cs)
     env->exception_index = -1;
 }
 
-int cpu_s390x_handle_mmu_fault(CPUS390XState *env, target_ulong address,
-                               int rw, int mmu_idx)
+int s390_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
+                              int rw, int mmu_idx)
 {
-    env->exception_index = EXCP_PGM;
-    env->int_pgm_code = PGM_ADDRESSING;
+    S390CPU *cpu = S390_CPU(cs);
+
+    cpu->env.exception_index = EXCP_PGM;
+    cpu->env.int_pgm_code = PGM_ADDRESSING;
     /* On real machines this value is dropped into LowMem.  Since this
        is userland, simply put this someplace that cpu_loop can find it.  */
-    env->__excp_addr = address;
+    cpu->env.__excp_addr = address;
     return 1;
 }
 
@@ -379,14 +381,16 @@ int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
     return r;
 }
 
-int cpu_s390x_handle_mmu_fault(CPUS390XState *env, target_ulong orig_vaddr,
-                               int rw, int mmu_idx)
+int s390_cpu_handle_mmu_fault(CPUState *cs, vaddr orig_vaddr,
+                              int rw, int mmu_idx)
 {
+    S390CPU *cpu = S390_CPU(cs);
+    CPUS390XState *env = &cpu->env;
     uint64_t asc = env->psw.mask & PSW_MASK_ASC;
     target_ulong vaddr, raddr;
     int prot;
 
-    DPRINTF("%s: address 0x%" PRIx64 " rw %d mmu_idx %d\n",
+    DPRINTF("%s: address 0x%" VADDR_PRIx " rw %d mmu_idx %d\n",
             __func__, orig_vaddr, rw, mmu_idx);
 
     orig_vaddr &= TARGET_PAGE_MASK;

diff --git a/target-s390x/mem_helper.c b/target-s390x/mem_helper.c
index db673cfbe86d9cae7f59db10266b4e9abdbd4fc4..d9dc8ae3df1f4551b1b14bfcc4e00d5a2999c869 100644 (file)
--- a/target-s390x/mem_helper.c
+++ b/target-s390x/mem_helper.c
@@ -47,9 +47,10 @@
 void tlb_fill(CPUS390XState *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    S390CPU *cpu = s390_env_get_cpu(env);
     int ret;
 
-    ret = cpu_s390x_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = s390_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (unlikely(ret != 0)) {
         if (likely(retaddr)) {
             /* now we have a real cpu fault */

diff --git a/target-sh4/cpu.c b/target-sh4/cpu.c
index 8e7bcd248deb819d27a5f7638b278390f9930ecd..88960c851274325fe41a32f0e4c2dc48a1cb4a00 100644 (file)
--- a/target-sh4/cpu.c
+++ b/target-sh4/cpu.c
@@ -281,7 +281,9 @@ static void superh_cpu_class_init(ObjectClass *oc, void *data)
     cc->synchronize_from_tb = superh_cpu_synchronize_from_tb;
     cc->gdb_read_register = superh_cpu_gdb_read_register;
     cc->gdb_write_register = superh_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = superh_cpu_handle_mmu_fault;
+#else
     cc->get_phys_page_debug = superh_cpu_get_phys_page_debug;
 #endif
     dc->vmsd = &vmstate_sh_cpu;

diff --git a/target-sh4/cpu.h b/target-sh4/cpu.h
index 808f90f1cf83e693ebe800f021e41621e03ca7ee..a85571087d3ce5d15e2e302ed7a04a4e43d21c6a 100644 (file)
--- a/target-sh4/cpu.h
+++ b/target-sh4/cpu.h
@@ -193,9 +193,8 @@ SuperHCPU *cpu_sh4_init(const char *cpu_model);
 int cpu_sh4_exec(CPUSH4State * s);
 int cpu_sh4_signal_handler(int host_signum, void *pinfo,
                            void *puc);
-int cpu_sh4_handle_mmu_fault(CPUSH4State * env, target_ulong address, int rw,
-                             int mmu_idx);
-#define cpu_handle_mmu_fault cpu_sh4_handle_mmu_fault
+int superh_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+                                int mmu_idx);
 
 void sh4_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 #if !defined(CONFIG_USER_ONLY)

diff --git a/target-sh4/helper.c b/target-sh4/helper.c
index 9ac28250e0b69492fe69fa5fd3b43b069ef95a3d..3f8f1fa2964785c553175d400a539a0545170402 100644 (file)
--- a/target-sh4/helper.c
+++ b/target-sh4/helper.c
@@ -39,9 +39,12 @@ void superh_cpu_do_interrupt(CPUState *cs)
     env->exception_index = -1;
 }
 
-int cpu_sh4_handle_mmu_fault(CPUSH4State * env, target_ulong address, int rw,
-                             int mmu_idx)
+int superh_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
+                                int mmu_idx)
 {
+    SuperHCPU *cpu = SUPERH_CPU(cs);
+    CPUSH4State *env = &cpu->env;
+
     env->tea = address;
     env->exception_index = -1;
     switch (rw) {
@@ -447,9 +450,11 @@ static int get_physical_address(CPUSH4State * env, target_ulong * physical,
     return get_mmu_address(env, physical, prot, address, rw, access_type);
 }
 
-int cpu_sh4_handle_mmu_fault(CPUSH4State * env, target_ulong address, int rw,
-                             int mmu_idx)
+int superh_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
+                                int mmu_idx)
 {
+    SuperHCPU *cpu = SUPERH_CPU(cs);
+    CPUSH4State *env = &cpu->env;
     target_ulong physical;
     int prot, ret, access_type;
 

diff --git a/target-sh4/op_helper.c b/target-sh4/op_helper.c
index e955e810b5170c5d878c89d20ecbd9562ebfb569..35f906788adb173eec14201ae72724ecfabd30bc 100644 (file)
--- a/target-sh4/op_helper.c
+++ b/target-sh4/op_helper.c
@@ -41,9 +41,10 @@
 void tlb_fill(CPUSH4State *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    SuperHCPU *cpu = sh_env_get_cpu(env);
     int ret;
 
-    ret = cpu_sh4_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = superh_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (ret) {
         /* now we have a real cpu fault */
         if (retaddr) {

diff --git a/target-sparc/cpu.c b/target-sparc/cpu.c
index 9a315c8d4c2df98e8b4b55f29f7d090a3dc16f72..3e6e7a754e9d6eef3b959712c8b5c706a38b794e 100644 (file)
--- a/target-sparc/cpu.c
+++ b/target-sparc/cpu.c
@@ -821,7 +821,9 @@ static void sparc_cpu_class_init(ObjectClass *oc, void *data)
     cc->synchronize_from_tb = sparc_cpu_synchronize_from_tb;
     cc->gdb_read_register = sparc_cpu_gdb_read_register;
     cc->gdb_write_register = sparc_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = sparc_cpu_handle_mmu_fault;
+#else
     cc->do_unassigned_access = sparc_cpu_unassigned_access;
     cc->get_phys_page_debug = sparc_cpu_get_phys_page_debug;
 #endif

diff --git a/target-sparc/cpu.h b/target-sparc/cpu.h
index e14b5a12aafabe31395958b7fc33971efc9221c7..893caa05767d9ae56724d1aafa0b59960e05eb00 100644 (file)
--- a/target-sparc/cpu.h
+++ b/target-sparc/cpu.h
@@ -521,9 +521,8 @@ SPARCCPU *cpu_sparc_init(const char *cpu_model);
 void cpu_sparc_set_id(CPUSPARCState *env, unsigned int cpu);
 void sparc_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 /* mmu_helper.c */
-int cpu_sparc_handle_mmu_fault(CPUSPARCState *env1, target_ulong address, int rw,
+int sparc_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
                                int mmu_idx);
-#define cpu_handle_mmu_fault cpu_sparc_handle_mmu_fault
 target_ulong mmu_probe(CPUSPARCState *env, target_ulong address, int mmulev);
 void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUSPARCState *env);
 

diff --git a/target-sparc/ldst_helper.c b/target-sparc/ldst_helper.c
index 45ed1543461619523fab6e4672f038f4d7a7e859..c2482454ac6372126384cf64b856a64a922275c7 100644 (file)
--- a/target-sparc/ldst_helper.c
+++ b/target-sparc/ldst_helper.c
@@ -2441,9 +2441,10 @@ static void QEMU_NORETURN do_unaligned_access(CPUSPARCState *env,
 void tlb_fill(CPUSPARCState *env, target_ulong addr, int is_write, int mmu_idx,
               uintptr_t retaddr)
 {
+    SPARCCPU *cpu = sparc_env_get_cpu(env);
     int ret;
 
-    ret = cpu_sparc_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = sparc_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (ret) {
         if (retaddr) {
             cpu_restore_state(env, retaddr);

diff --git a/target-sparc/mmu_helper.c b/target-sparc/mmu_helper.c
index 511eb7e65c132fd6e5a038f32c53ee6c8461e896..5a9748e347512e14f46dea231d21d838cdb87161 100644 (file)
--- a/target-sparc/mmu_helper.c
+++ b/target-sparc/mmu_helper.c
@@ -25,13 +25,15 @@
 
 #if defined(CONFIG_USER_ONLY)
 
-int cpu_sparc_handle_mmu_fault(CPUSPARCState *env1, target_ulong address, int rw,
+int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
                                int mmu_idx)
 {
+    SPARCCPU *cpu = SPARC_CPU(cs);
+
     if (rw & 2) {
-        env1->exception_index = TT_TFAULT;
+        cpu->env.exception_index = TT_TFAULT;
     } else {
-        env1->exception_index = TT_DFAULT;
+        cpu->env.exception_index = TT_DFAULT;
     }
     return 1;
 }
@@ -198,9 +200,11 @@ static int get_physical_address(CPUSPARCState *env, hwaddr *physical,
 }
 
 /* Perform address translation */
-int cpu_sparc_handle_mmu_fault(CPUSPARCState *env, target_ulong address, int rw,
+int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
                                int mmu_idx)
 {
+    SPARCCPU *cpu = SPARC_CPU(cs);
+    CPUSPARCState *env = &cpu->env;
     hwaddr paddr;
     target_ulong vaddr;
     target_ulong page_size;
@@ -212,7 +216,7 @@ int cpu_sparc_handle_mmu_fault(CPUSPARCState *env, target_ulong address, int rw,
     vaddr = address;
     if (error_code == 0) {
 #ifdef DEBUG_MMU
-        printf("Translate at " TARGET_FMT_lx " -> " TARGET_FMT_plx ", vaddr "
+        printf("Translate at %" VADDR_PRIx " -> " TARGET_FMT_plx ", vaddr "
                TARGET_FMT_lx "\n", address, paddr, vaddr);
 #endif
         tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size);
@@ -705,9 +709,11 @@ static int get_physical_address(CPUSPARCState *env, hwaddr *physical,
 }
 
 /* Perform address translation */
-int cpu_sparc_handle_mmu_fault(CPUSPARCState *env, target_ulong address, int rw,
+int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
                                int mmu_idx)
 {
+    SPARCCPU *cpu = SPARC_CPU(cs);
+    CPUSPARCState *env = &cpu->env;
     target_ulong vaddr;
     hwaddr paddr;
     target_ulong page_size;

diff --git a/target-unicore32/cpu.c b/target-unicore32/cpu.c
index 1cfe50a4320ccac9aa132cf852701b9e3288a409..24dec13985f5e913b2d8031a9beb5436b6bb3f70 100644 (file)
--- a/target-unicore32/cpu.c
+++ b/target-unicore32/cpu.c
@@ -148,7 +148,9 @@ static void uc32_cpu_class_init(ObjectClass *oc, void *data)
     cc->do_interrupt = uc32_cpu_do_interrupt;
     cc->dump_state = uc32_cpu_dump_state;
     cc->set_pc = uc32_cpu_set_pc;
-#ifndef CONFIG_USER_ONLY
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = uc32_cpu_handle_mmu_fault;
+#else
     cc->get_phys_page_debug = uc32_cpu_get_phys_page_debug;
 #endif
     dc->vmsd = &vmstate_uc32_cpu;

diff --git a/target-unicore32/cpu.h b/target-unicore32/cpu.h
index 1db7419733cd647632baa443bd1062a2cf57ccd6..50972f9494ce6db38bb4fc14f6fbf551fb0002b0 100644 (file)
--- a/target-unicore32/cpu.h
+++ b/target-unicore32/cpu.h
@@ -125,13 +125,10 @@ void cpu_asr_write(CPUUniCore32State *env1, target_ulong val, target_ulong mask)
 #define cpu_init                        uc32_cpu_init
 #define cpu_exec                        uc32_cpu_exec
 #define cpu_signal_handler              uc32_cpu_signal_handler
-#define cpu_handle_mmu_fault            uc32_cpu_handle_mmu_fault
 
 CPUUniCore32State *uc32_cpu_init(const char *cpu_model);
 int uc32_cpu_exec(CPUUniCore32State *s);
 int uc32_cpu_signal_handler(int host_signum, void *pinfo, void *puc);
-int uc32_cpu_handle_mmu_fault(CPUUniCore32State *env, target_ulong address, int rw,
-                              int mmu_idx);
 
 /* MMU modes definitions */
 #define MMU_MODE0_SUFFIX _kernel
@@ -157,6 +154,8 @@ static inline void cpu_get_tb_cpu_state(CPUUniCore32State *env, target_ulong *pc
     }
 }
 
+int uc32_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+                              int mmu_idx);
 void uc32_translate_init(void);
 void switch_mode(CPUUniCore32State *, int);
 

diff --git a/target-unicore32/helper.c b/target-unicore32/helper.c
index a1f86b0d1309c943c0918d96606bc546faf6c8ba..29cf5755bce8ef67da934413351d13f4752fe649 100644 (file)
--- a/target-unicore32/helper.c
+++ b/target-unicore32/helper.c
@@ -242,9 +242,12 @@ void uc32_cpu_do_interrupt(CPUState *cs)
     cpu_abort(env, "NO interrupt in user mode\n");
 }
 
-int uc32_cpu_handle_mmu_fault(CPUUniCore32State *env, target_ulong address,
+int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
                               int access_type, int mmu_idx)
 {
+    UniCore32CPU *cpu = UNICORE32_CPU(cs);
+    CPUUniCore32State *env = &cpu->env;
+
     cpu_abort(env, "NO mmu fault in user mode\n");
     return 1;
 }

diff --git a/target-unicore32/op_helper.c b/target-unicore32/op_helper.c
index 4f9f41eb36bf17521a66a12ec0d8bd85ee8d96b8..5cd2378c6dd97896c842205c71d520eeeca43258 100644 (file)
--- a/target-unicore32/op_helper.c
+++ b/target-unicore32/op_helper.c
@@ -258,9 +258,10 @@ uint32_t HELPER(ror_cc)(CPUUniCore32State *env, uint32_t x, uint32_t i)
 void tlb_fill(CPUUniCore32State *env, target_ulong addr, int is_write,
               int mmu_idx, uintptr_t retaddr)
 {
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
     int ret;
 
-    ret = uc32_cpu_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    ret = uc32_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
     if (unlikely(ret)) {
         if (retaddr) {
             /* now we have a real cpu fault */

diff --git a/target-unicore32/softmmu.c b/target-unicore32/softmmu.c
index 9552f69228f68ebd56cad508d577ffa0e810180f..75f73865f16c8f051fce49fc85e1b05a19b1243f 100644 (file)
--- a/target-unicore32/softmmu.c
+++ b/target-unicore32/softmmu.c
@@ -209,9 +209,11 @@ do_fault:
     return code;
 }
 
-int uc32_cpu_handle_mmu_fault(CPUUniCore32State *env, target_ulong address,
+int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
                               int access_type, int mmu_idx)
 {
+    UniCore32CPU *cpu = UNICORE32_CPU(cs);
+    CPUUniCore32State *env = &cpu->env;
     uint32_t phys_addr;
     target_ulong page_size;
     int prot;
@@ -231,7 +233,7 @@ int uc32_cpu_handle_mmu_fault(CPUUniCore32State *env, target_ulong address,
             ret = get_phys_addr_ucv2(env, address, access_type, is_user,
                                     &phys_addr, &prot, &page_size);
             if (is_user) {
-                DPRINTF("user space access: ret %x, address %x, "
+                DPRINTF("user space access: ret %x, address %" VADDR_PRIx ", "
                         "access_type %x, phys_addr %x, prot %x\n",
                         ret, address, access_type, phys_addr, prot);
             }

diff --git a/user-exec.c b/user-exec.c
index 82bfa66ce303efdfc94701e657674a95b7ce7ea4..d850d41d4518eb09eac6828d100e348356bda097 100644 (file)
--- a/user-exec.c
+++ b/user-exec.c
@@ -82,6 +82,8 @@ static inline int handle_cpu_signal(uintptr_t pc, unsigned long address,
                                     int is_write, sigset_t *old_set,
                                     void *puc)
 {
+    CPUState *cpu;
+    CPUClass *cc;
     CPUArchState *env;
     int ret;
 
@@ -99,9 +101,12 @@ static inline int handle_cpu_signal(uintptr_t pc, unsigned long address,
        are still valid segv ones */
     address = h2g_nocheck(address);
 
-    env = current_cpu->env_ptr;
+    cpu = current_cpu;
+    cc = CPU_GET_CLASS(cpu);
+    env = cpu->env_ptr;
     /* see if it is an MMU fault */
-    ret = cpu_handle_mmu_fault(env, address, is_write, MMU_USER_IDX);
+    g_assert(cc->handle_mmu_fault);
+    ret = cc->handle_mmu_fault(cpu, address, is_write, MMU_USER_IDX);
     if (ret < 0) {
         return 0; /* not an MMU fault */
     }