generalized use of GOTO_TB() macro

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1207 c046a42c-6fe2-441c-8c8c-71466251a162

exec-all.h

@@ -322,7 +322,7 @@ TranslationBlock *tb_find_pc(unsigned long pc_ptr);
 #if defined(__powerpc__)
 
 /* we patch the jump instruction directly */
-#define JUMP_TB(opname, tbparam, n, eip)\
+#define GOTO_TB(opname, tbparam, n)\
 do {\
     asm volatile (ASM_DATA_SECTION\
 		  ASM_NAME(__op_label) #n "." ASM_NAME(opname) ":\n"\
@@ -330,20 +330,12 @@ do {\
 		  ASM_PREVIOUS_SECTION \
                   "b " ASM_NAME(__op_jmp) #n "\n"\
 		  "1:\n");\
-    T0 = (long)(tbparam) + (n);\
-    EIP = (int32_t)eip;\
-    EXIT_TB();\
-} while (0)
-
-#define JUMP_TB2(opname, tbparam, n)\
-do {\
-    asm volatile ("b " ASM_NAME(__op_jmp) #n "\n");\
 } while (0)
 
 #elif defined(__i386__) && defined(USE_DIRECT_JUMP)
 
 /* we patch the jump instruction directly */
-#define GOTO_TB(opname, n)\
+#define GOTO_TB(opname, tbparam, n)\
 do {\
     asm volatile (".section .data\n"\
 		  ASM_NAME(__op_label) #n "." ASM_NAME(opname) ":\n"\
@@ -353,48 +345,30 @@ do {\
 		  "1:\n");\
 } while (0)
 
-#define JUMP_TB(opname, tbparam, n, eip)\
-do {\
-    asm volatile (".section .data\n"\
-		  ASM_NAME(__op_label) #n "." ASM_NAME(opname) ":\n"\
-		  ".long 1f\n"\
-		  ASM_PREVIOUS_SECTION \
-                  "jmp " ASM_NAME(__op_jmp) #n "\n"\
-		  "1:\n");\
-    T0 = (long)(tbparam) + (n);\
-    EIP = (int32_t)eip;\
-    EXIT_TB();\
-} while (0)
-
-#define JUMP_TB2(opname, tbparam, n)\
-do {\
-    asm volatile ("jmp " ASM_NAME(__op_jmp) #n "\n");\
-} while (0)
-
 #else
 
 /* jump to next block operations (more portable code, does not need
    cache flushing, but slower because of indirect jump) */
-#define JUMP_TB(opname, tbparam, n, eip)\
+#define GOTO_TB(opname, tbparam, n)\
 do {\
-    static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
     static void __attribute__((unused)) *dummy ## n = &&dummy_label ## n;\
+    static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
     goto *(void *)(((TranslationBlock *)tbparam)->tb_next[n]);\
-label ## n:\
+label ## n: ;\
-    T0 = (long)(tbparam) + (n);\
+dummy_label ## n: ;\
-    EIP = (int32_t)eip;\
-dummy_label ## n:\
-    EXIT_TB();\
-} while (0)
-
-/* second jump to same destination 'n' */
-#define JUMP_TB2(opname, tbparam, n)\
-do {\
-    goto *(void *)(((TranslationBlock *)tbparam)->tb_next[n - 2]);\
 } while (0)
 
 #endif
 
+/* XXX: will be suppressed */
+#define JUMP_TB(opname, tbparam, n, eip)\
+do {\
+    GOTO_TB(opname, tbparam, n);\
+    T0 = (long)(tbparam) + (n);\
+    EIP = (int32_t)eip;\
+    EXIT_TB();\
+} while (0)
+
 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];

target-i386/op.c

@@ -1262,12 +1262,12 @@ void OPPROTO op_clts(void)
 
 void OPPROTO op_goto_tb0(void)
 {
-    GOTO_TB(op_goto_tb0, 0);
+    GOTO_TB(op_goto_tb0, PARAM1, 0);
 }
 
 void OPPROTO op_goto_tb1(void)
 {
-    GOTO_TB(op_goto_tb1, 1);
+    GOTO_TB(op_goto_tb1, PARAM1, 1);
 }
 
 void OPPROTO op_jmp_label(void)

target-i386/translate.c

@@ -61,6 +61,12 @@ static uint32_t *gen_opparam_ptr;
 static int x86_64_hregs;
 #endif
 
+#ifdef USE_DIRECT_JUMP
+#define TBPARAM(x)
+#else
+#define TBPARAM(x) (long)(x)
+#endif
+
 typedef struct DisasContext {
     /* current insn context */
     int override; /* -1 if no override */
@@ -1782,13 +1788,13 @@ static inline void gen_jcc(DisasContext *s, int b,
         l1 = gen_new_label();
         func(l1);
 
-        gen_op_goto_tb0();
+        gen_op_goto_tb0(TBPARAM(tb));
         gen_jmp_im(next_eip);
         gen_op_movl_T0_im((long)tb + 0);
         gen_op_exit_tb();
 
         gen_set_label(l1);
-        gen_op_goto_tb1();
+        gen_op_goto_tb1(TBPARAM(tb));
         gen_jmp_im(val);
         gen_op_movl_T0_im((long)tb + 1);
         gen_op_exit_tb();
@@ -2179,9 +2185,9 @@ static void gen_jmp_tb(DisasContext *s, target_ulong eip, int tb_num)
         if (s->cc_op != CC_OP_DYNAMIC)
             gen_op_set_cc_op(s->cc_op);
         if (tb_num)
-            gen_op_goto_tb1();
+            gen_op_goto_tb1(TBPARAM(tb));
         else
-            gen_op_goto_tb0();
+            gen_op_goto_tb0(TBPARAM(tb));
         gen_jmp_im(eip);
         gen_op_movl_T0_im((long)tb + tb_num);
         gen_op_exit_tb();