finished simplifying string operations

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@379 c046a42c-6fe2-441c-8c8c-71466251a162

diff --git a/op-i386.c b/op-i386.c
index 2f84e15..16521c9 100644 (file)
--- a/op-i386.c
+++ b/op-i386.c
@@ -516,9 +516,9 @@ void OPPROTO op_cmpxchg8b(void)
     helper_cmpxchg8b();
 }
 
-void OPPROTO op_jmp_tb_next(void)
+void OPPROTO op_jmp(void)
 {
-    JUMP_TB(op_jmp_tb_next, PARAM1, 0, PARAM2);
+    JUMP_TB(op_jmp, PARAM1, 0, PARAM2);
 }
 
 void OPPROTO op_movl_T0_0(void)
@@ -1033,6 +1033,15 @@ void OPPROTO op_jcc(void)
     FORCE_RET();
 }
 
+void OPPROTO op_jcc_im(void)
+{
+    if (T0)
+        EIP = PARAM1;
+    else
+        EIP = PARAM2;
+    FORCE_RET();
+}
+
 /* slow set cases (compute x86 flags) */
 void OPPROTO op_seto_T0_cc(void)
 {

diff --git a/op_string.h b/op_string.h
deleted file mode 100644 (file)
index 66b598b..0000000
--- a/op_string.h
+++ /dev/null
@@ -1,94 +0,0 @@
-
-void OPPROTO glue(glue(op_repz_scas, SUFFIX), STRING_SUFFIX)(void)
-{
-    int v1, v2, inc;
-
-    if (CX != 0) {
-        /* NOTE: the flags are not modified if CX == 0 */
-        v1 = EAX & DATA_MASK;
-        inc = (DF << SHIFT);
-        do {
-            v2 = glue(ldu, SUFFIX)(DI_ADDR);
-            INC_DI();
-            DEC_CX();
-            if (v1 != v2)
-                break;
-        } while (CX != 0);
-        CC_SRC = v2;
-        CC_DST = v1 - v2;
-        CC_OP = CC_OP_SUBB + SHIFT;
-    }
-    FORCE_RET();
-}
-
-void OPPROTO glue(glue(op_repnz_scas, SUFFIX), STRING_SUFFIX)(void)
-{
-    int v1, v2, inc;
-
-    if (CX != 0) {
-        /* NOTE: the flags are not modified if CX == 0 */
-        v1 = EAX & DATA_MASK;
-        inc = (DF << SHIFT);
-        do {
-            v2 = glue(ldu, SUFFIX)(DI_ADDR);
-            INC_DI();
-            DEC_CX();
-            if (v1 == v2)
-                break;
-        } while (CX != 0);
-        CC_SRC = v2;
-        CC_DST = v1 - v2;
-        CC_OP = CC_OP_SUBB + SHIFT;
-    }
-    FORCE_RET();
-}
-
-void OPPROTO glue(glue(op_repz_cmps, SUFFIX), STRING_SUFFIX)(void)
-{
-    int v1, v2, inc;
-    if (CX != 0) {
-        inc = (DF << SHIFT);
-        do {
-            v1 = glue(ldu, SUFFIX)(SI_ADDR);
-            v2 = glue(ldu, SUFFIX)(DI_ADDR);
-            INC_SI();
-            INC_DI();
-            DEC_CX();
-            if (v1 != v2)
-                break;
-        } while (CX != 0);
-        CC_SRC = v2;
-        CC_DST = v1 - v2;
-        CC_OP = CC_OP_SUBB + SHIFT;
-    }
-    FORCE_RET();
-}
-
-void OPPROTO glue(glue(op_repnz_cmps, SUFFIX), STRING_SUFFIX)(void)
-{
-    int v1, v2, inc;
-    if (CX != 0) {
-        inc = (DF << SHIFT);
-        do {
-            v1 = glue(ldu, SUFFIX)(SI_ADDR);
-            v2 = glue(ldu, SUFFIX)(DI_ADDR);
-            INC_SI();
-            INC_DI();
-            DEC_CX();
-            if (v1 == v2)
-                break;
-        } while (CX != 0);
-        CC_SRC = v2;
-        CC_DST = v1 - v2;
-        CC_OP = CC_OP_SUBB + SHIFT;
-    }
-    FORCE_RET();
-}
-
-#undef STRING_SUFFIX
-#undef SI_ADDR
-#undef DI_ADDR
-#undef INC_SI
-#undef INC_DI
-#undef CX
-#undef DEC_CX

diff --git a/ops_template.h b/ops_template.h
index b55ccf9..1822967 100644 (file)
--- a/ops_template.h
+++ b/ops_template.h
@@ -518,34 +518,6 @@ void OPPROTO op_update_bt_cc(void)
 #endif
 
 /* string operations */
-/* XXX: maybe use lower level instructions to ease 16 bit / segment handling */
-
-#define STRING_SUFFIX _fast
-#define SI_ADDR (void *)ESI
-#define DI_ADDR (void *)EDI
-#define INC_SI() ESI += inc
-#define INC_DI() EDI += inc
-#define CX ECX
-#define DEC_CX() ECX--
-#include "op_string.h"
-
-#define STRING_SUFFIX _a32
-#define SI_ADDR (uint8_t *)A0 + ESI
-#define DI_ADDR env->segs[R_ES].base + EDI
-#define INC_SI() ESI += inc
-#define INC_DI() EDI += inc
-#define CX ECX
-#define DEC_CX() ECX--
-#include "op_string.h"
-
-#define STRING_SUFFIX _a16
-#define SI_ADDR (uint8_t *)A0 + (ESI & 0xffff)
-#define DI_ADDR env->segs[R_ES].base + (EDI & 0xffff)
-#define INC_SI() ESI = (ESI & ~0xffff) | ((ESI + inc) & 0xffff)
-#define INC_DI() EDI = (EDI & ~0xffff) | ((EDI + inc) & 0xffff)
-#define CX (ECX & 0xffff)
-#define DEC_CX() ECX = (ECX & ~0xffff) | ((ECX - 1) & 0xffff)
-#include "op_string.h"
 
 void OPPROTO glue(op_movl_T0_Dshift, SUFFIX)(void)
 {
@@ -555,14 +527,40 @@ void OPPROTO glue(op_movl_T0_Dshift, SUFFIX)(void)
 void OPPROTO glue(op_string_jz_sub, SUFFIX)(void)
 {
     if ((DATA_TYPE)CC_DST == 0)
-        JUMP_TB(glue(op_string_jz_sub, SUFFIX), PARAM1, 1, PARAM2);
+        JUMP_TB2(glue(op_string_jz_sub, SUFFIX), PARAM1, 1);
     FORCE_RET();
 }
 
 void OPPROTO glue(op_string_jnz_sub, SUFFIX)(void)
 {
     if ((DATA_TYPE)CC_DST != 0)
-        JUMP_TB(glue(op_string_jnz_sub, SUFFIX), PARAM1, 1, PARAM2);
+        JUMP_TB2(glue(op_string_jnz_sub, SUFFIX), PARAM1, 1);
+    FORCE_RET();
+}
+
+void OPPROTO glue(glue(op_string_jz_sub, SUFFIX), _im)(void)
+{
+    if ((DATA_TYPE)CC_DST == 0) {
+        EIP = PARAM1;
+        if (env->eflags & TF_MASK) {
+            raise_exception(EXCP01_SSTP);
+        }
+        T0 = 0;
+        EXIT_TB();
+    }
+    FORCE_RET();
+}
+
+void OPPROTO glue(glue(op_string_jnz_sub, SUFFIX), _im)(void)
+{
+    if ((DATA_TYPE)CC_DST != 0) {
+        EIP = PARAM1;
+        if (env->eflags & TF_MASK) {
+            raise_exception(EXCP01_SSTP);
+        }
+        T0 = 0;
+        EXIT_TB();
+    }
     FORCE_RET();
 }
 
@@ -573,6 +571,19 @@ void OPPROTO glue(op_jz_ecx, SUFFIX)(void)
         JUMP_TB(glue(op_jz_ecx, SUFFIX), PARAM1, 1, PARAM2);
     FORCE_RET();
 }
+
+void OPPROTO glue(glue(op_jz_ecx, SUFFIX), _im)(void)
+{
+    if ((DATA_TYPE)ECX == 0) {
+        EIP = PARAM1;
+        if (env->eflags & TF_MASK) {
+            raise_exception(EXCP01_SSTP);
+        }
+        T0 = 0;
+        EXIT_TB();
+    }
+    FORCE_RET();
+}
 #endif
 
 /* port I/O */