cutils: Add test for buffer_is_zero

[mirror_qemu.git] / target-sparc / helper.c

diff --git a/target-sparc/helper.c b/target-sparc/helper.c
index 91ecfc7aa85d9e559a4a81f275a0a61a98969ad7..bedc6722a1867a65d5464d76ba177e0debeba65a 100644 (file)
--- a/target-sparc/helper.c
+++ b/target-sparc/helper.c
@@ -17,21 +17,27 @@
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "qemu/osdep.h"
 #include "cpu.h"
+#include "exec/exec-all.h"
 #include "qemu/host-utils.h"
-#include "helper.h"
+#include "exec/helper-proto.h"
 #include "sysemu/sysemu.h"
 
 void helper_raise_exception(CPUSPARCState *env, int tt)
 {
-    env->exception_index = tt;
-    cpu_loop_exit(env);
+    CPUState *cs = CPU(sparc_env_get_cpu(env));
+
+    cs->exception_index = tt;
+    cpu_loop_exit(cs);
 }
 
 void helper_debug(CPUSPARCState *env)
 {
-    env->exception_index = EXCP_DEBUG;
-    cpu_loop_exit(env);
+    CPUState *cs = CPU(sparc_env_get_cpu(env));
+
+    cs->exception_index = EXCP_DEBUG;
+    cpu_loop_exit(cs);
 }
 
 #ifdef TARGET_SPARC64
@@ -47,10 +53,16 @@ void helper_tick_set_count(void *opaque, uint64_t count)
 #endif
 }
 
-uint64_t helper_tick_get_count(void *opaque)
+uint64_t helper_tick_get_count(CPUSPARCState *env, void *opaque, int mem_idx)
 {
 #if !defined(CONFIG_USER_ONLY)
-    return cpu_tick_get_count(opaque);
+    CPUTimer *timer = opaque;
+
+    if (timer->npt && mem_idx < MMU_KERNEL_IDX) {
+        helper_raise_exception(env, TT_PRIV_INSN);
+    }
+
+    return cpu_tick_get_count(timer);
 #else
     return 0;
 #endif
@@ -67,6 +79,7 @@ void helper_tick_set_limit(void *opaque, uint64_t limit)
 static target_ulong helper_udiv_common(CPUSPARCState *env, target_ulong a,
                                        target_ulong b, int cc)
 {
+    SPARCCPU *cpu = sparc_env_get_cpu(env);
     int overflow = 0;
     uint64_t x0;
     uint32_t x1;
@@ -75,13 +88,13 @@ static target_ulong helper_udiv_common(CPUSPARCState *env, target_ulong a,
     x1 = (b & 0xffffffff);
 
     if (x1 == 0) {
-        cpu_restore_state(env, GETPC());
+        cpu_restore_state(CPU(cpu), GETPC());
         helper_raise_exception(env, TT_DIV_ZERO);
     }
 
     x0 = x0 / x1;
-    if (x0 > 0xffffffff) {
-        x0 = 0xffffffff;
+    if (x0 > UINT32_MAX) {
+        x0 = UINT32_MAX;
         overflow = 1;
     }
 
@@ -106,6 +119,7 @@ target_ulong helper_udiv_cc(CPUSPARCState *env, target_ulong a, target_ulong b)
 static target_ulong helper_sdiv_common(CPUSPARCState *env, target_ulong a,
                                        target_ulong b, int cc)
 {
+    SPARCCPU *cpu = sparc_env_get_cpu(env);
     int overflow = 0;
     int64_t x0;
     int32_t x1;
@@ -114,14 +128,17 @@ static target_ulong helper_sdiv_common(CPUSPARCState *env, target_ulong a,
     x1 = (b & 0xffffffff);
 
     if (x1 == 0) {
-        cpu_restore_state(env, GETPC());
+        cpu_restore_state(CPU(cpu), GETPC());
         helper_raise_exception(env, TT_DIV_ZERO);
-    }
-
-    x0 = x0 / x1;
-    if ((int32_t) x0 != x0) {
-        x0 = x0 < 0 ? 0x80000000 : 0x7fffffff;
+    } else if (x1 == -1 && x0 == INT64_MIN) {
+        x0 = INT32_MAX;
         overflow = 1;
+    } else {
+        x0 = x0 / x1;
+        if ((int32_t) x0 != x0) {
+            x0 = x0 < 0 ? INT32_MIN : INT32_MAX;
+            overflow = 1;
+        }
     }
 
     if (cc) {
@@ -147,7 +164,9 @@ int64_t helper_sdivx(CPUSPARCState *env, int64_t a, int64_t b)
 {
     if (b == 0) {
         /* Raise divide by zero trap.  */
-        cpu_restore_state(env, GETPC());
+        SPARCCPU *cpu = sparc_env_get_cpu(env);
+
+        cpu_restore_state(CPU(cpu), GETPC());
         helper_raise_exception(env, TT_DIV_ZERO);
     } else if (b == -1) {
         /* Avoid overflow trap with i386 divide insn.  */
@@ -161,7 +180,9 @@ uint64_t helper_udivx(CPUSPARCState *env, uint64_t a, uint64_t b)
 {
     if (b == 0) {
         /* Raise divide by zero trap.  */
-        cpu_restore_state(env, GETPC());
+        SPARCCPU *cpu = sparc_env_get_cpu(env);
+
+        cpu_restore_state(CPU(cpu), GETPC());
         helper_raise_exception(env, TT_DIV_ZERO);
     }
     return a / b;
@@ -171,6 +192,7 @@ uint64_t helper_udivx(CPUSPARCState *env, uint64_t a, uint64_t b)
 target_ulong helper_taddcctv(CPUSPARCState *env, target_ulong src1,
                              target_ulong src2)
 {
+    SPARCCPU *cpu = sparc_env_get_cpu(env);
     target_ulong dst;
 
     /* Tag overflow occurs if either input has bits 0 or 1 set.  */
@@ -193,13 +215,14 @@ target_ulong helper_taddcctv(CPUSPARCState *env, target_ulong src1,
     return dst;
 
  tag_overflow:
-    cpu_restore_state(env, GETPC());
+    cpu_restore_state(CPU(cpu), GETPC());
     helper_raise_exception(env, TT_TOVF);
 }
 
 target_ulong helper_tsubcctv(CPUSPARCState *env, target_ulong src1,
                              target_ulong src2)
 {
+    SPARCCPU *cpu = sparc_env_get_cpu(env);
     target_ulong dst;
 
     /* Tag overflow occurs if either input has bits 0 or 1 set.  */
@@ -222,6 +245,19 @@ target_ulong helper_tsubcctv(CPUSPARCState *env, target_ulong src1,
     return dst;
 
  tag_overflow:
-    cpu_restore_state(env, GETPC());
+    cpu_restore_state(CPU(cpu), GETPC());
     helper_raise_exception(env, TT_TOVF);
 }
+
+#ifndef TARGET_SPARC64
+void helper_power_down(CPUSPARCState *env)
+{
+    CPUState *cs = CPU(sparc_env_get_cpu(env));
+
+    cs->halted = 1;
+    cs->exception_index = EXCP_HLT;
+    env->pc = env->npc;
+    env->npc = env->pc + 4;
+    cpu_loop_exit(cs);
+}
+#endif