@@ -1655,8 +1655,9 @@ void host_cpuid(uint32_t function, uint32_t count,
void host_vendor_fms(char *vendor, int *family, int *model, int *stepping);
/* helper.c */
-int x86_cpu_handle_mmu_fault(CPUState *cpu, vaddr addr, int size,
- int is_write, int mmu_idx);
+bool x86_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
+ MMUAccessType access_type, int mmu_idx,
+ bool probe, uintptr_t retaddr);
void x86_cpu_set_a20(X86CPU *cpu, int a20_state);
#ifndef CONFIG_USER_ONLY
@@ -5866,9 +5866,8 @@ 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;
-#ifdef CONFIG_USER_ONLY
- cc->handle_mmu_fault = x86_cpu_handle_mmu_fault;
-#else
+ cc->tlb_fill = x86_cpu_tlb_fill;
+#ifndef CONFIG_USER_ONLY
cc->asidx_from_attrs = x86_asidx_from_attrs;
cc->get_memory_mapping = x86_cpu_get_memory_mapping;
cc->get_phys_page_debug = x86_cpu_get_phys_page_debug;
@@ -137,26 +137,7 @@ void raise_exception_ra(CPUX86State *env, int exception_index, uintptr_t retaddr
raise_interrupt2(env, exception_index, 0, 0, 0, retaddr);
}
-#if defined(CONFIG_USER_ONLY)
-int x86_cpu_handle_mmu_fault(CPUState *cs, vaddr addr, int size,
- 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;
- env->error_code = (is_write << PG_ERROR_W_BIT);
- env->error_code |= PG_ERROR_U_MASK;
- cs->exception_index = EXCP0E_PAGE;
- env->exception_is_int = 0;
- env->exception_next_eip = -1;
- return 1;
-}
-
-#else
-
+#if !defined(CONFIG_USER_ONLY)
static hwaddr get_hphys(CPUState *cs, hwaddr gphys, MMUAccessType access_type,
int *prot)
{
@@ -365,8 +346,8 @@ static hwaddr get_hphys(CPUState *cs, hwaddr gphys, MMUAccessType access_type,
* 0 = nothing more to do
* 1 = generate PF fault
*/
-int x86_cpu_handle_mmu_fault(CPUState *cs, vaddr addr, int size,
- int is_write1, int mmu_idx)
+static int handle_mmu_fault(CPUState *cs, vaddr addr, int size,
+ int is_write1, int mmu_idx)
{
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
@@ -691,3 +672,39 @@ do_check_protect_pse36:
return 1;
}
#endif
+
+bool x86_cpu_tlb_fill(CPUState *cs, vaddr addr, int size,
+ MMUAccessType access_type, int mmu_idx,
+ bool probe, uintptr_t retaddr)
+{
+ X86CPU *cpu = X86_CPU(cs);
+ CPUX86State *env = &cpu->env;
+
+#ifdef CONFIG_USER_ONLY
+ /* user mode only emulation */
+ env->cr[2] = addr;
+ env->error_code = (access_type == MMU_DATA_STORE) << PG_ERROR_W_BIT;
+ env->error_code |= PG_ERROR_U_MASK;
+ cs->exception_index = EXCP0E_PAGE;
+ env->exception_is_int = 0;
+ env->exception_next_eip = -1;
+ cpu_loop_exit_restore(cs, retaddr);
+#else
+ env->retaddr = retaddr;
+ if (handle_mmu_fault(cs, addr, size, access_type, mmu_idx)) {
+ /* FIXME: On error in get_hphys we have already jumpped out. */
+ g_assert(!probe);
+ raise_exception_err_ra(env, cs->exception_index,
+ env->error_code, retaddr);
+ }
+ return true;
+#endif
+}
+
+#if !defined(CONFIG_USER_ONLY)
+void tlb_fill(CPUState *cs, target_ulong addr, int size,
+ MMUAccessType access_type, int mmu_idx, uintptr_t retaddr)
+{
+ x86_cpu_tlb_fill(cs, addr, size, access_type, mmu_idx, false, retaddr);
+}
+#endif
@@ -191,24 +191,3 @@ void helper_boundl(CPUX86State *env, target_ulong a0, int v)
raise_exception_ra(env, EXCP05_BOUND, GETPC());
}
}
-
-#if !defined(CONFIG_USER_ONLY)
-/* try to fill the TLB and return an exception if error. If retaddr is
- * 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(CPUState *cs, target_ulong addr, int size,
- MMUAccessType access_type, int mmu_idx, uintptr_t retaddr)
-{
- X86CPU *cpu = X86_CPU(cs);
- CPUX86State *env = &cpu->env;
- int ret;
-
- env->retaddr = retaddr;
- ret = x86_cpu_handle_mmu_fault(cs, addr, size, access_type, mmu_idx);
- if (ret) {
- raise_exception_err_ra(env, cs->exception_index, env->error_code, retaddr);
- }
-}
-#endif
We do not support probing, but we do not need it yet either. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/i386/cpu.h | 5 ++-- target/i386/cpu.c | 5 ++-- target/i386/excp_helper.c | 61 +++++++++++++++++++++++++-------------- target/i386/mem_helper.c | 21 -------------- 4 files changed, 44 insertions(+), 48 deletions(-)