From 1579a72ec5957297786ba5928e60571f4ab2f844 Mon Sep 17 00:00:00 2001
From: ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Thu, 5 Apr 2007 23:16:25 +0000
Subject: Fix RDHWR handling. Code formatting. Don't use *_direct versions to
 raise exceptions.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2611 c046a42c-6fe2-441c-8c8c-71466251a162
---
 target-mips/op.c | 68 ++++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 49 insertions(+), 19 deletions(-)

(limited to 'target-mips/op.c')

diff --git a/target-mips/op.c b/target-mips/op.c
index db430a7ee4..d09b8da2df 100644
--- a/target-mips/op.c
+++ b/target-mips/op.c
@@ -336,7 +336,7 @@ void op_addo (void)
     T0 = (int32_t)T0 + (int32_t)T1;
     if (((tmp ^ T1 ^ (-1)) & (T0 ^ T1)) >> 31) {
         /* operands of same sign, result different sign */
-        CALL_FROM_TB1(do_raise_exception_direct, EXCP_OVERFLOW);
+        CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);
     }
     T0 = (int32_t)T0;
     RETURN();
@@ -356,7 +356,7 @@ void op_subo (void)
     T0 = (int32_t)T0 - (int32_t)T1;
     if (((tmp ^ T1) & (tmp ^ T0)) >> 31) {
         /* operands of different sign, first operand and result different sign */
-        CALL_FROM_TB1(do_raise_exception_direct, EXCP_OVERFLOW);
+        CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);
     }
     T0 = (int32_t)T0;
     RETURN();
@@ -402,7 +402,7 @@ void op_daddo (void)
     T0 += T1;
     if (((tmp ^ T1 ^ (-1)) & (T0 ^ T1)) >> 63) {
         /* operands of same sign, result different sign */
-        CALL_FROM_TB1(do_raise_exception_direct, EXCP_OVERFLOW);
+        CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);
     }
     RETURN();
 }
@@ -421,7 +421,7 @@ void op_dsubo (void)
     T0 = (int64_t)T0 - (int64_t)T1;
     if (((tmp ^ T1) & (tmp ^ T0)) >> 63) {
         /* operands of different sign, first operand and result different sign */
-        CALL_FROM_TB1(do_raise_exception_direct, EXCP_OVERFLOW);
+        CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);
     }
     RETURN();
 }
@@ -1650,7 +1650,7 @@ void op_cp0_enabled(void)
 {
     if (!(env->CP0_Status & (1 << CP0St_CU0)) &&
 	(env->hflags & MIPS_HFLAG_UM)) {
-        CALL_FROM_TB2(do_raise_exception_direct_err, EXCP_CpU, 0);
+        CALL_FROM_TB2(do_raise_exception_err, EXCP_CpU, 0);
     }
     RETURN();
 }
@@ -1658,7 +1658,7 @@ void op_cp0_enabled(void)
 void op_cp1_enabled(void)
 {
     if (!(env->CP0_Status & (1 << CP0St_CU1))) {
-        CALL_FROM_TB2(do_raise_exception_direct_err, EXCP_CpU, 1);
+        CALL_FROM_TB2(do_raise_exception_err, EXCP_CpU, 1);
     }
     RETURN();
 }
@@ -2063,7 +2063,7 @@ void op_ei (void)
 void op_trap (void)
 {
     if (T0) {
-        CALL_FROM_TB1(do_raise_exception_direct, EXCP_TRAP);
+        CALL_FROM_TB1(do_raise_exception, EXCP_TRAP);
     }
     RETURN();
 }
@@ -2116,37 +2116,67 @@ void op_deret (void)
 
 void op_rdhwr_cpunum(void)
 {
-    if (env->CP0_HWREna & (1 << 0))
-       T0 = env->CP0_EBase & 0x2ff;
+    if (!(env->hflags & MIPS_HFLAG_UM) ||
+	(env->CP0_HWREna & (1 << 0)) ||
+        (env->CP0_Status & (1 << CP0St_CU0)))
+        T0 = env->CP0_EBase & 0x3ff;
     else
-       CALL_FROM_TB1(do_raise_exception_direct, EXCP_RI);
+        CALL_FROM_TB1(do_raise_exception, EXCP_RI);
     RETURN();
 }
 
 void op_rdhwr_synci_step(void)
 {
-    if (env->CP0_HWREna & (1 << 1))
-       T0 = env->SYNCI_Step;
+    if (!(env->hflags & MIPS_HFLAG_UM) ||
+	(env->CP0_HWREna & (1 << 1)) ||
+        (env->CP0_Status & (1 << CP0St_CU0)))
+        T0 = env->SYNCI_Step;
     else
-       CALL_FROM_TB1(do_raise_exception_direct, EXCP_RI);
+        CALL_FROM_TB1(do_raise_exception, EXCP_RI);
     RETURN();
 }
 
 void op_rdhwr_cc(void)
 {
-    if (env->CP0_HWREna & (1 << 2))
-       T0 = env->CP0_Count;
+    if (!(env->hflags & MIPS_HFLAG_UM) ||
+	(env->CP0_HWREna & (1 << 2)) ||
+        (env->CP0_Status & (1 << CP0St_CU0)))
+        T0 = env->CP0_Count;
     else
-       CALL_FROM_TB1(do_raise_exception_direct, EXCP_RI);
+        CALL_FROM_TB1(do_raise_exception, EXCP_RI);
     RETURN();
 }
 
 void op_rdhwr_ccres(void)
 {
-    if (env->CP0_HWREna & (1 << 3))
-       T0 = env->CCRes;
+    if (!(env->hflags & MIPS_HFLAG_UM) ||
+	(env->CP0_HWREna & (1 << 3)) ||
+        (env->CP0_Status & (1 << CP0St_CU0)))
+        T0 = env->CCRes;
     else
-       CALL_FROM_TB1(do_raise_exception_direct, EXCP_RI);
+        CALL_FROM_TB1(do_raise_exception, EXCP_RI);
+    RETURN();
+}
+
+void op_rdhwr_unimpl30(void)
+{
+    if (!(env->hflags & MIPS_HFLAG_UM) ||
+	(env->CP0_HWREna & (1 << 30)) ||
+        (env->CP0_Status & (1 << CP0St_CU0)))
+        T0 = 0;
+    else
+        CALL_FROM_TB1(do_raise_exception, EXCP_RI);
+    RETURN();
+}
+
+void op_rdhwr_unimpl31(void)
+{
+    if (!(env->hflags & MIPS_HFLAG_UM) ||
+	(env->CP0_HWREna & (1 << 31)) ||
+        (env->CP0_Status & (1 << CP0St_CU0)))
+        T0 = 0;
+    else
+        CALL_FROM_TB1(do_raise_exception, EXCP_RI);
     RETURN();
 }
 
-- 
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