target/ppc: divided mmu_helper.c in 2 files

Divided mmu_helper.c in 2 files, functions inside #ifdef CONFIG_SOFTMMU
stayed in mmu_helper.c, other functions moved to mmu_common.c. Updated
meson.build to compile mmu_common.c and only compile mmu_helper.c when
CONFIG_TCG is set.
Moved function declarations, #define and structs used by both files to
internal.h except for functions that use structures defined in cpu.h,
those were moved to cpu.h.

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Message-Id: <20210723175627.72847-2-lucas.araujo@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

target/ppc/cpu.h

@@ -1330,6 +1330,15 @@ void store_booke_tsr(CPUPPCState *env, target_ulong val);
 void ppc_tlb_invalidate_all(CPUPPCState *env);
 void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr);
 void cpu_ppc_set_vhyp(PowerPCCPU *cpu, PPCVirtualHypervisor *vhyp);
+int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb,
+                            hwaddr *raddrp, target_ulong address,
+                            uint32_t pid);
+int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
+                            hwaddr *raddrp,
+                            target_ulong address, uint32_t pid, int ext,
+                            int i);
+hwaddr booke206_tlb_to_page_size(CPUPPCState *env,
+                                        ppcmas_tlb_t *tlb);
 #endif
 #endif
 

target/ppc/internal.h

@@ -245,4 +245,43 @@ static inline int prot_for_access_type(MMUAccessType access_type)
     g_assert_not_reached();
 }
 
+/* PowerPC MMU emulation */
+
+typedef struct mmu_ctx_t mmu_ctx_t;
+bool ppc_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
+                      hwaddr *raddrp, int *psizep, int *protp,
+                      int mmu_idx, bool guest_visible);
+int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx,
+                                     target_ulong eaddr,
+                                     MMUAccessType access_type, int type,
+                                     int mmu_idx);
+/* Software driven TLB helpers */
+int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr,
+                                    int way, int is_code);
+/* Context used internally during MMU translations */
+struct mmu_ctx_t {
+    hwaddr raddr;      /* Real address              */
+    hwaddr eaddr;      /* Effective address         */
+    int prot;                      /* Protection bits           */
+    hwaddr hash[2];    /* Pagetable hash values     */
+    target_ulong ptem;             /* Virtual segment ID | API  */
+    int key;                       /* Access key                */
+    int nx;                        /* Non-execute area          */
+};
+
+/* Common routines used by software and hardware TLBs emulation */
+static inline int pte_is_valid(target_ulong pte0)
+{
+    return pte0 & 0x80000000 ? 1 : 0;
+}
+
+static inline void pte_invalidate(target_ulong *pte0)
+{
+    *pte0 &= ~0x80000000;
+}
+
+#define PTE_PTEM_MASK 0x7FFFFFBF
+#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
+
+
 #endif /* PPC_INTERNAL_H */

target/ppc/meson.build

@@ -37,11 +37,13 @@ ppc_softmmu_ss.add(files(
   'arch_dump.c',
   'machine.c',
   'mmu-hash32.c',
-  'mmu_helper.c',
+  'mmu_common.c',
   'monitor.c',
 ))
-ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_false: files(
-  'tcg-stub.c'
+ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_true: files(
+  'mmu_helper.c',
+), if_false: files(
+  'tcg-stub.c',
 ))
 
 ppc_softmmu_ss.add(when: 'TARGET_PPC64', if_true: files(