Replace is_user variable with mmu_idx in softmmu core,

  allowing support of more than 2 mmu access modes.
Add backward compatibility is_user variable in targets code when needed.
Implement per target cpu_mmu_index function, avoiding duplicated code
  and #ifdef TARGET_xxx in softmmu core functions.
Implement per target mmu modes definitions. As an example, add PowerPC
  hypervisor mode definition and Alpha executive and kernel modes definitions.
Optimize PowerPC case, precomputing mmu_idx when MSR register changes
  and using the same definition in code translation code.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3384 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 36 insertions, 83 deletions

diff --git a/softmmu_header.h b/softmmu_header.h
index 384518b..80eefa8 100644
--- a/softmmu_header.h
+++ b/softmmu_header.h
@@ -39,66 +39,19 @@
 #error unsupported data size
 #endif
 
-#if ACCESS_TYPE == 0
+#if ACCESS_TYPE < (NB_MMU_MODES)
 
-#define CPU_MEM_INDEX 0
+#define CPU_MMU_INDEX ACCESS_TYPE
 #define MMUSUFFIX _mmu
 
-#elif ACCESS_TYPE == 1
+#elif ACCESS_TYPE == (NB_MMU_MODES)
 
-#define CPU_MEM_INDEX 1
+#define CPU_MMU_INDEX (cpu_mmu_index(env))
 #define MMUSUFFIX _mmu
 
-#elif ACCESS_TYPE == 2
-
-#ifdef TARGET_I386
-#define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3)
-#elif defined (TARGET_PPC)
-#define CPU_MEM_INDEX (msr_pr)
-#elif defined (TARGET_MIPS)
-#define CPU_MEM_INDEX ((env->hflags & MIPS_HFLAG_MODE) == MIPS_HFLAG_UM)
-#elif defined (TARGET_SPARC)
-#define CPU_MEM_INDEX ((env->psrs) == 0)
-#elif defined (TARGET_ARM)
-#define CPU_MEM_INDEX ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR)
-#elif defined (TARGET_SH4)
-#define CPU_MEM_INDEX ((env->sr & SR_MD) == 0)
-#elif defined (TARGET_ALPHA)
-#define CPU_MEM_INDEX ((env->ps >> 3) & 3)
-#elif defined (TARGET_M68K)
-#define CPU_MEM_INDEX ((env->sr & SR_S) == 0)
-#elif defined (TARGET_CRIS)
-/* CRIS FIXME: I guess we want to validate supervisor mode acceses here.  */
-#define CPU_MEM_INDEX (0)
-#else
-#error unsupported CPU
-#endif
-#define MMUSUFFIX _mmu
+#elif ACCESS_TYPE == (NB_MMU_MODES + 1)
 
-#elif ACCESS_TYPE == 3
-
-#ifdef TARGET_I386
-#define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3)
-#elif defined (TARGET_PPC)
-#define CPU_MEM_INDEX (msr_pr)
-#elif defined (TARGET_MIPS)
-#define CPU_MEM_INDEX ((env->hflags & MIPS_HFLAG_MODE) == MIPS_HFLAG_UM)
-#elif defined (TARGET_SPARC)
-#define CPU_MEM_INDEX ((env->psrs) == 0)
-#elif defined (TARGET_ARM)
-#define CPU_MEM_INDEX ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR)
-#elif defined (TARGET_SH4)
-#define CPU_MEM_INDEX ((env->sr & SR_MD) == 0)
-#elif defined (TARGET_ALPHA)
-#define CPU_MEM_INDEX ((env->ps >> 3) & 3)
-#elif defined (TARGET_M68K)
-#define CPU_MEM_INDEX ((env->sr & SR_S) == 0)
-#elif defined (TARGET_CRIS)
-/* CRIS FIXME: I guess we want to validate supervisor mode acceses here.  */
-#define CPU_MEM_INDEX (0)
-#else
-#error unsupported CPU
-#endif
+#define CPU_MMU_INDEX (cpu_mmu_index(env))
 #define MMUSUFFIX _cmmu
 
 #else
@@ -111,18 +64,18 @@
 #define RES_TYPE int
 #endif
 
-#if ACCESS_TYPE == 3
+#if ACCESS_TYPE == (NB_MMU_MODES + 1)
 #define ADDR_READ addr_code
 #else
 #define ADDR_READ addr_read
 #endif
 
 DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
-                                                         int is_user);
-void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr, DATA_TYPE v, int is_user);
+                                                         int mmu_idx);
+void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr, DATA_TYPE v, int mmu_idx);
 
 #if (DATA_SIZE <= 4) && (TARGET_LONG_BITS == 32) && defined(__i386__) && \
-    (ACCESS_TYPE <= 1) && defined(ASM_SOFTMMU)
+    (ACCESS_TYPE < NB_MMU_MODES) && defined(ASM_SOFTMMU)
 
 #define CPU_TLB_ENTRY_BITS 4
 
@@ -161,8 +114,8 @@ static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
                   "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
                   "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
                   "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
-                  "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MEM_INDEX][0].addr_read)),
-                  "i" (CPU_MEM_INDEX),
+                  "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_read)),
+                  "i" (CPU_MMU_INDEX),
                   "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
                   : "%eax", "%ecx", "%edx", "memory", "cc");
     return res;
@@ -208,8 +161,8 @@ static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
                   "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
                   "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
                   "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
-                  "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MEM_INDEX][0].addr_read)),
-                  "i" (CPU_MEM_INDEX),
+                  "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_read)),
+                  "i" (CPU_MMU_INDEX),
                   "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
                   : "%eax", "%ecx", "%edx", "memory", "cc");
     return res;
@@ -260,8 +213,8 @@ static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE
                   "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
                   "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
                   "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
-                  "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MEM_INDEX][0].addr_write)),
-                  "i" (CPU_MEM_INDEX),
+                  "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_write)),
+                  "i" (CPU_MMU_INDEX),
                   "m" (*(uint8_t *)&glue(glue(__st, SUFFIX), MMUSUFFIX))
                   : "%eax", "%ecx", "%edx", "memory", "cc");
 }
@@ -276,16 +229,16 @@ static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
     RES_TYPE res;
     target_ulong addr;
     unsigned long physaddr;
-    int is_user;
+    int mmu_idx;
 
     addr = ptr;
     index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
-    is_user = CPU_MEM_INDEX;
-    if (__builtin_expect(env->tlb_table[is_user][index].ADDR_READ !=
+    mmu_idx = CPU_MMU_INDEX;
+    if (__builtin_expect(env->tlb_table[mmu_idx][index].ADDR_READ !=
                          (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
-        res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user);
+        res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx);
     } else {
-        physaddr = addr + env->tlb_table[is_user][index].addend;
+        physaddr = addr + env->tlb_table[mmu_idx][index].addend;
         res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr);
     }
     return res;
@@ -297,23 +250,23 @@ static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
     int res, index;
     target_ulong addr;
     unsigned long physaddr;
-    int is_user;
+    int mmu_idx;
 
     addr = ptr;
     index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
-    is_user = CPU_MEM_INDEX;
-    if (__builtin_expect(env->tlb_table[is_user][index].ADDR_READ !=
+    mmu_idx = CPU_MMU_INDEX;
+    if (__builtin_expect(env->tlb_table[mmu_idx][index].ADDR_READ !=
                          (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
-        res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user);
+        res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx);
     } else {
-        physaddr = addr + env->tlb_table[is_user][index].addend;
+        physaddr = addr + env->tlb_table[mmu_idx][index].addend;
         res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr);
     }
     return res;
 }
 #endif
 
-#if ACCESS_TYPE != 3
+#if ACCESS_TYPE != (NB_MMU_MODES + 1)
 
 /* generic store macro */
 
@@ -322,25 +275,25 @@ static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE
     int index;
     target_ulong addr;
     unsigned long physaddr;
-    int is_user;
+    int mmu_idx;
 
     addr = ptr;
     index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
-    is_user = CPU_MEM_INDEX;
-    if (__builtin_expect(env->tlb_table[is_user][index].addr_write !=
+    mmu_idx = CPU_MMU_INDEX;
+    if (__builtin_expect(env->tlb_table[mmu_idx][index].addr_write !=
                          (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
-        glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, is_user);
+        glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, mmu_idx);
     } else {
-        physaddr = addr + env->tlb_table[is_user][index].addend;
+        physaddr = addr + env->tlb_table[mmu_idx][index].addend;
         glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
     }
 }
 
-#endif /* ACCESS_TYPE != 3 */
+#endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 
 #endif /* !asm */
 
-#if ACCESS_TYPE != 3
+#if ACCESS_TYPE != (NB_MMU_MODES + 1)
 
 #if DATA_SIZE == 8
 static inline float64 glue(ldfq, MEMSUFFIX)(target_ulong ptr)
@@ -386,7 +339,7 @@ static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float32 v)
 }
 #endif /* DATA_SIZE == 4 */
 
-#endif /* ACCESS_TYPE != 3 */
+#endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 
 #undef RES_TYPE
 #undef DATA_TYPE
@@ -394,6 +347,6 @@ static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float32 v)
 #undef SUFFIX
 #undef USUFFIX
 #undef DATA_SIZE
-#undef CPU_MEM_INDEX
+#undef CPU_MMU_INDEX
 #undef MMUSUFFIX
 #undef ADDR_READ