X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/b45a9b185120a10455859341d8035cce9b441fc8..c38bb94a995fd4b7f92ff933c19c1a1ffbe9df5b:/exec-all.h

diff --git a/exec-all.h b/exec-all.h
index 2a13a9535e..51d01f260b 100644
--- a/exec-all.h
+++ b/exec-all.h
@@ -40,14 +40,11 @@ typedef ram_addr_t tb_page_addr_t;
 #define DISAS_UPDATE  2 /* cpu state was modified dynamically */
 #define DISAS_TB_JUMP 3 /* only pc was modified statically */
 
+struct TranslationBlock;
 typedef struct TranslationBlock TranslationBlock;
 
 /* XXX: make safe guess about sizes */
-#if (HOST_LONG_BITS == 32) && (TARGET_LONG_BITS == 64)
-#define MAX_OP_PER_INSTR 128
-#else
-#define MAX_OP_PER_INSTR 96
-#endif
+#define MAX_OP_PER_INSTR 208
 
 #if HOST_LONG_BITS == 32
 #define MAX_OPC_PARAM_PER_ARG 2
@@ -95,7 +92,7 @@ TranslationBlock *tb_gen_code(CPUState *env,
                               target_ulong pc, target_ulong cs_base, int flags,
                               int cflags);
 void cpu_exec_init(CPUState *env);
-void QEMU_NORETURN cpu_loop_exit(void);
+void QEMU_NORETURN cpu_loop_exit(CPUState *env1);
 int page_unprotect(target_ulong address, unsigned long pc, void *puc);
 void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
                                    int is_cpu_write_access);
@@ -125,6 +122,8 @@ void tlb_set_page(CPUState *env, target_ulong vaddr,
 
 #if defined(_ARCH_PPC) || defined(__x86_64__) || defined(__arm__) || defined(__i386__)
 #define USE_DIRECT_JUMP
+#elif defined(CONFIG_TCG_INTERPRETER)
+#define USE_DIRECT_JUMP
 #endif
 
 struct TranslationBlock {
@@ -192,7 +191,14 @@ extern TranslationBlock *tb_phys_hash[CODE_GEN_PHYS_HASH_SIZE];
 
 #if defined(USE_DIRECT_JUMP)
 
-#if defined(_ARCH_PPC)
+#if defined(CONFIG_TCG_INTERPRETER)
+static inline void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr)
+{
+    /* patch the branch destination */
+    *(uint32_t *)jmp_addr = addr - (jmp_addr + 4);
+    /* no need to flush icache explicitly */
+}
+#elif defined(_ARCH_PPC)
 void ppc_tb_set_jmp_target(unsigned long jmp_addr, unsigned long addr);
 #define tb_set_jmp_target1 ppc_tb_set_jmp_target
 #elif defined(__i386__) || defined(__x86_64__)
@@ -226,6 +232,8 @@ static inline void tb_set_jmp_target1(unsigned long jmp_addr, unsigned long addr
     __asm __volatile__ ("swi 0x9f0002" : : "r" (_beg), "r" (_end), "r" (_flg));
 #endif
 }
+#else
+#error tb_set_jmp_target1 is missing
 #endif
 
 static inline void tb_set_jmp_target(TranslationBlock *tb,
@@ -270,13 +278,33 @@ extern spinlock_t tb_lock;
 
 extern int tb_invalidated_flag;
 
+/* The return address may point to the start of the next instruction.
+   Subtracting one gets us the call instruction itself.  */
+#if defined(CONFIG_TCG_INTERPRETER)
+/* Alpha and SH4 user mode emulations and Softmmu call GETPC().
+   For all others, GETPC remains undefined (which makes TCI a little faster. */
+# if defined(CONFIG_SOFTMMU) || defined(TARGET_ALPHA) || defined(TARGET_SH4)
+extern void *tci_tb_ptr;
+#  define GETPC() tci_tb_ptr
+# endif
+#elif defined(__s390__) && !defined(__s390x__)
+# define GETPC() ((void*)(((unsigned long)__builtin_return_address(0) & 0x7fffffffUL) - 1))
+#elif defined(__arm__)
+/* Thumb return addresses have the low bit set, so we need to subtract two.
+   This is still safe in ARM mode because instructions are 4 bytes.  */
+# define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 2))
+#else
+# define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 1))
+#endif
+
 #if !defined(CONFIG_USER_ONLY)
 
-extern CPUWriteMemoryFunc *io_mem_write[IO_MEM_NB_ENTRIES][4];
-extern CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4];
-extern void *io_mem_opaque[IO_MEM_NB_ENTRIES];
+uint64_t io_mem_read(int index, target_phys_addr_t addr, unsigned size);
+void io_mem_write(int index, target_phys_addr_t addr, uint64_t value,
+                  unsigned size);
+extern struct MemoryRegion *io_mem_region[IO_MEM_NB_ENTRIES];
 
-void tlb_fill(target_ulong addr, int is_write, int mmu_idx,
+void tlb_fill(CPUState *env1, target_ulong addr, int is_write, int mmu_idx,
               void *retaddr);
 
 #include "softmmu_defs.h"
@@ -309,32 +337,7 @@ static inline tb_page_addr_t get_page_addr_code(CPUState *env1, target_ulong add
     return addr;
 }
 #else
-/* NOTE: this function can trigger an exception */
-/* NOTE2: the returned address is not exactly the physical address: it
-   is the offset relative to phys_ram_base */
-static inline tb_page_addr_t get_page_addr_code(CPUState *env1, target_ulong addr)
-{
-    int mmu_idx, page_index, pd;
-    void *p;
-
-    page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
-    mmu_idx = cpu_mmu_index(env1);
-    if (unlikely(env1->tlb_table[mmu_idx][page_index].addr_code !=
-                 (addr & TARGET_PAGE_MASK))) {
-        ldub_code(addr);
-    }
-    pd = env1->tlb_table[mmu_idx][page_index].addr_code & ~TARGET_PAGE_MASK;
-    if (pd > IO_MEM_ROM && !(pd & IO_MEM_ROMD)) {
-#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_SPARC)
-        do_unassigned_access(addr, 0, 1, 0, 4);
-#else
-        cpu_abort(env1, "Trying to execute code outside RAM or ROM at 0x" TARGET_FMT_lx "\n", addr);
-#endif
-    }
-    p = (void *)(unsigned long)addr
-        + env1->tlb_table[mmu_idx][page_index].addend;
-    return qemu_ram_addr_from_host_nofail(p);
-}
+tb_page_addr_t get_page_addr_code(CPUState *env1, target_ulong addr);
 #endif
 
 typedef void (CPUDebugExcpHandler)(CPUState *env);
@@ -347,4 +350,18 @@ extern int singlestep;
 /* cpu-exec.c */
 extern volatile sig_atomic_t exit_request;
 
+/* Deterministic execution requires that IO only be performed on the last
+   instruction of a TB so that interrupts take effect immediately.  */
+static inline int can_do_io(CPUState *env)
+{
+    if (!use_icount) {
+        return 1;
+    }
+    /* If not executing code then assume we are ok.  */
+    if (!env->current_tb) {
+        return 1;
+    }
+    return env->can_do_io != 0;
+}
+
 #endif