diff --git a/cpu-exec.c b/cpu-exec.c
index 65af9a6..5e64fa4 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -333,7 +333,7 @@
 #elif defined(TARGET_MIPS)
                     do_interrupt(env);
 #elif defined(TARGET_SPARC)
-                    do_interrupt(env->exception_index);
+                    do_interrupt(env);
 #elif defined(TARGET_ARM)
                     do_interrupt(env);
 #elif defined(TARGET_SH4)
@@ -474,7 +474,8 @@
 			     (pil == 15 || pil > env->psrpil)) ||
 			    type != TT_EXTINT) {
 			    env->interrupt_request &= ~CPU_INTERRUPT_HARD;
-			    do_interrupt(env->interrupt_index);
+                            env->exception_index = env->interrupt_index;
+                            do_interrupt(env);
 			    env->interrupt_index = 0;
 #if !defined(TARGET_SPARC64) && !defined(CONFIG_USER_ONLY)
                             cpu_check_irqs(env);
diff --git a/target-sparc/exec.h b/target-sparc/exec.h
index 19d1732..3ef0cf9 100644
--- a/target-sparc/exec.h
+++ b/target-sparc/exec.h
@@ -30,7 +30,7 @@
 
 int cpu_sparc_handle_mmu_fault(CPUState *env1, target_ulong address, int rw,
                                int mmu_idx, int is_softmmu);
-void do_interrupt(int intno);
+void do_interrupt(CPUState *env);
 
 static inline int cpu_halted(CPUState *env1) {
     if (!env1->halted)
diff --git a/target-sparc/helper.c b/target-sparc/helper.c
index 1bc2fed..8bf40e4 100644
--- a/target-sparc/helper.c
+++ b/target-sparc/helper.c
@@ -32,6 +32,7 @@
 
 //#define DEBUG_MMU
 //#define DEBUG_FEATURES
+//#define DEBUG_PCALL
 
 typedef struct sparc_def_t sparc_def_t;
 
@@ -651,6 +652,220 @@
 }
 #endif
 
+#ifdef TARGET_SPARC64
+#ifdef DEBUG_PCALL
+static const char * const excp_names[0x50] = {
+    [TT_TFAULT] = "Instruction Access Fault",
+    [TT_TMISS] = "Instruction Access MMU Miss",
+    [TT_CODE_ACCESS] = "Instruction Access Error",
+    [TT_ILL_INSN] = "Illegal Instruction",
+    [TT_PRIV_INSN] = "Privileged Instruction",
+    [TT_NFPU_INSN] = "FPU Disabled",
+    [TT_FP_EXCP] = "FPU Exception",
+    [TT_TOVF] = "Tag Overflow",
+    [TT_CLRWIN] = "Clean Windows",
+    [TT_DIV_ZERO] = "Division By Zero",
+    [TT_DFAULT] = "Data Access Fault",
+    [TT_DMISS] = "Data Access MMU Miss",
+    [TT_DATA_ACCESS] = "Data Access Error",
+    [TT_DPROT] = "Data Protection Error",
+    [TT_UNALIGNED] = "Unaligned Memory Access",
+    [TT_PRIV_ACT] = "Privileged Action",
+    [TT_EXTINT | 0x1] = "External Interrupt 1",
+    [TT_EXTINT | 0x2] = "External Interrupt 2",
+    [TT_EXTINT | 0x3] = "External Interrupt 3",
+    [TT_EXTINT | 0x4] = "External Interrupt 4",
+    [TT_EXTINT | 0x5] = "External Interrupt 5",
+    [TT_EXTINT | 0x6] = "External Interrupt 6",
+    [TT_EXTINT | 0x7] = "External Interrupt 7",
+    [TT_EXTINT | 0x8] = "External Interrupt 8",
+    [TT_EXTINT | 0x9] = "External Interrupt 9",
+    [TT_EXTINT | 0xa] = "External Interrupt 10",
+    [TT_EXTINT | 0xb] = "External Interrupt 11",
+    [TT_EXTINT | 0xc] = "External Interrupt 12",
+    [TT_EXTINT | 0xd] = "External Interrupt 13",
+    [TT_EXTINT | 0xe] = "External Interrupt 14",
+    [TT_EXTINT | 0xf] = "External Interrupt 15",
+};
+#endif
+
+void do_interrupt(CPUState *env)
+{
+    int intno = env->exception_index;
+
+#ifdef DEBUG_PCALL
+    if (loglevel & CPU_LOG_INT) {
+        static int count;
+        const char *name;
+
+        if (intno < 0 || intno >= 0x180 || (intno > 0x4f && intno < 0x80))
+            name = "Unknown";
+        else if (intno >= 0x100)
+            name = "Trap Instruction";
+        else if (intno >= 0xc0)
+            name = "Window Fill";
+        else if (intno >= 0x80)
+            name = "Window Spill";
+        else {
+            name = excp_names[intno];
+            if (!name)
+                name = "Unknown";
+        }
+
+        fprintf(logfile, "%6d: %s (v=%04x) pc=%016" PRIx64 " npc=%016" PRIx64
+                " SP=%016" PRIx64 "\n",
+                count, name, intno,
+                env->pc,
+                env->npc, env->regwptr[6]);
+        cpu_dump_state(env, logfile, fprintf, 0);
+#if 0
+        {
+            int i;
+            uint8_t *ptr;
+
+            fprintf(logfile, "       code=");
+            ptr = (uint8_t *)env->pc;
+            for(i = 0; i < 16; i++) {
+                fprintf(logfile, " %02x", ldub(ptr + i));
+            }
+            fprintf(logfile, "\n");
+        }
+#endif
+        count++;
+    }
+#endif
+#if !defined(CONFIG_USER_ONLY)
+    if (env->tl == MAXTL) {
+        cpu_abort(env, "Trap 0x%04x while trap level is MAXTL, Error state",
+                  env->exception_index);
+        return;
+    }
+#endif
+    env->tsptr->tstate = ((uint64_t)GET_CCR(env) << 32) |
+        ((env->asi & 0xff) << 24) | ((env->pstate & 0xf3f) << 8) |
+        GET_CWP64(env);
+    env->tsptr->tpc = env->pc;
+    env->tsptr->tnpc = env->npc;
+    env->tsptr->tt = intno;
+    change_pstate(PS_PEF | PS_PRIV | PS_AG);
+
+    if (intno == TT_CLRWIN)
+        cpu_set_cwp(env, (env->cwp - 1) & (NWINDOWS - 1));
+    else if ((intno & 0x1c0) == TT_SPILL)
+        cpu_set_cwp(env, (env->cwp - env->cansave - 2) & (NWINDOWS - 1));
+    else if ((intno & 0x1c0) == TT_FILL)
+        cpu_set_cwp(env, (env->cwp + 1) & (NWINDOWS - 1));
+    env->tbr &= ~0x7fffULL;
+    env->tbr |= ((env->tl > 1) ? 1 << 14 : 0) | (intno << 5);
+    if (env->tl < MAXTL - 1) {
+        env->tl++;
+    } else {
+        env->pstate |= PS_RED;
+        if (env->tl != MAXTL)
+            env->tl++;
+    }
+    env->tsptr = &env->ts[env->tl];
+    env->pc = env->tbr;
+    env->npc = env->pc + 4;
+    env->exception_index = 0;
+}
+#else
+#ifdef DEBUG_PCALL
+static const char * const excp_names[0x80] = {
+    [TT_TFAULT] = "Instruction Access Fault",
+    [TT_ILL_INSN] = "Illegal Instruction",
+    [TT_PRIV_INSN] = "Privileged Instruction",
+    [TT_NFPU_INSN] = "FPU Disabled",
+    [TT_WIN_OVF] = "Window Overflow",
+    [TT_WIN_UNF] = "Window Underflow",
+    [TT_UNALIGNED] = "Unaligned Memory Access",
+    [TT_FP_EXCP] = "FPU Exception",
+    [TT_DFAULT] = "Data Access Fault",
+    [TT_TOVF] = "Tag Overflow",
+    [TT_EXTINT | 0x1] = "External Interrupt 1",
+    [TT_EXTINT | 0x2] = "External Interrupt 2",
+    [TT_EXTINT | 0x3] = "External Interrupt 3",
+    [TT_EXTINT | 0x4] = "External Interrupt 4",
+    [TT_EXTINT | 0x5] = "External Interrupt 5",
+    [TT_EXTINT | 0x6] = "External Interrupt 6",
+    [TT_EXTINT | 0x7] = "External Interrupt 7",
+    [TT_EXTINT | 0x8] = "External Interrupt 8",
+    [TT_EXTINT | 0x9] = "External Interrupt 9",
+    [TT_EXTINT | 0xa] = "External Interrupt 10",
+    [TT_EXTINT | 0xb] = "External Interrupt 11",
+    [TT_EXTINT | 0xc] = "External Interrupt 12",
+    [TT_EXTINT | 0xd] = "External Interrupt 13",
+    [TT_EXTINT | 0xe] = "External Interrupt 14",
+    [TT_EXTINT | 0xf] = "External Interrupt 15",
+    [TT_TOVF] = "Tag Overflow",
+    [TT_CODE_ACCESS] = "Instruction Access Error",
+    [TT_DATA_ACCESS] = "Data Access Error",
+    [TT_DIV_ZERO] = "Division By Zero",
+    [TT_NCP_INSN] = "Coprocessor Disabled",
+};
+#endif
+
+void do_interrupt(CPUState *env)
+{
+    int cwp, intno = env->exception_index;
+
+#ifdef DEBUG_PCALL
+    if (loglevel & CPU_LOG_INT) {
+        static int count;
+        const char *name;
+
+        if (intno < 0 || intno >= 0x100)
+            name = "Unknown";
+        else if (intno >= 0x80)
+            name = "Trap Instruction";
+        else {
+            name = excp_names[intno];
+            if (!name)
+                name = "Unknown";
+        }
+
+        fprintf(logfile, "%6d: %s (v=%02x) pc=%08x npc=%08x SP=%08x\n",
+                count, name, intno,
+                env->pc,
+                env->npc, env->regwptr[6]);
+        cpu_dump_state(env, logfile, fprintf, 0);
+#if 0
+        {
+            int i;
+            uint8_t *ptr;
+
+            fprintf(logfile, "       code=");
+            ptr = (uint8_t *)env->pc;
+            for(i = 0; i < 16; i++) {
+                fprintf(logfile, " %02x", ldub(ptr + i));
+            }
+            fprintf(logfile, "\n");
+        }
+#endif
+        count++;
+    }
+#endif
+#if !defined(CONFIG_USER_ONLY)
+    if (env->psret == 0) {
+        cpu_abort(env, "Trap 0x%02x while interrupts disabled, Error state",
+                  env->exception_index);
+        return;
+    }
+#endif
+    env->psret = 0;
+    cwp = (env->cwp - 1) & (NWINDOWS - 1);
+    cpu_set_cwp(env, cwp);
+    env->regwptr[9] = env->pc;
+    env->regwptr[10] = env->npc;
+    env->psrps = env->psrs;
+    env->psrs = 1;
+    env->tbr = (env->tbr & TBR_BASE_MASK) | (intno << 4);
+    env->pc = env->tbr;
+    env->npc = env->pc + 4;
+    env->exception_index = 0;
+}
+#endif
+
 void memcpy32(target_ulong *dst, const target_ulong *src)
 {
     dst[0] = src[0];
@@ -663,12 +878,6 @@
     dst[7] = src[7];
 }
 
-void helper_flush(target_ulong addr)
-{
-    addr &= ~7;
-    tb_invalidate_page_range(addr, addr + 8);
-}
-
 void cpu_reset(CPUSPARCState *env)
 {
     tlb_flush(env, 1);
diff --git a/target-sparc/helper.h b/target-sparc/helper.h
index c64ffe8..b490c77 100644
--- a/target-sparc/helper.h
+++ b/target-sparc/helper.h
@@ -183,6 +183,7 @@
 void cpu_unlock(void);
 void cpu_loop_exit(void);
 void set_cwp(int new_cwp);
+void change_pstate(uint64_t new_pstate);
 void memcpy32(target_ulong *dst, const target_ulong *src);
 target_ulong mmu_probe(CPUState *env, target_ulong address, int mmulev);
 void dump_mmu(CPUState *env);
diff --git a/target-sparc/op_helper.c b/target-sparc/op_helper.c
index 250f719..2aae955 100644
--- a/target-sparc/op_helper.c
+++ b/target-sparc/op_helper.c
@@ -5,7 +5,6 @@
 #include "softmmu_exec.h"
 #endif /* !defined(CONFIG_USER_ONLY) */
 
-//#define DEBUG_PCALL
 //#define DEBUG_MMU
 //#define DEBUG_MXCC
 //#define DEBUG_UNALIGNED
@@ -2573,7 +2572,7 @@
     }
 }
 
-static inline void change_pstate(uint64_t new_pstate)
+void change_pstate(uint64_t new_pstate)
 {
     uint64_t pstate_regs, new_pstate_regs;
     uint64_t *src, *dst;
@@ -2620,249 +2619,29 @@
 }
 #endif
 
-void set_cwp(int new_cwp)
-{
-    /* put the modified wrap registers at their proper location */
-    if (env->cwp == (NWINDOWS - 1))
-        memcpy32(env->regbase, env->regbase + NWINDOWS * 16);
-    env->cwp = new_cwp;
-    /* put the wrap registers at their temporary location */
-    if (new_cwp == (NWINDOWS - 1))
-        memcpy32(env->regbase + NWINDOWS * 16, env->regbase);
-    env->regwptr = env->regbase + (new_cwp * 16);
-    REGWPTR = env->regwptr;
-}
-
 void cpu_set_cwp(CPUState *env1, int new_cwp)
 {
-    CPUState *saved_env;
-#ifdef reg_REGWPTR
-    target_ulong *saved_regwptr;
-#endif
-
-    saved_env = env;
-#ifdef reg_REGWPTR
-    saved_regwptr = REGWPTR;
-#endif
-    env = env1;
-    set_cwp(new_cwp);
-    env = saved_env;
-#ifdef reg_REGWPTR
-    REGWPTR = saved_regwptr;
-#endif
+    /* put the modified wrap registers at their proper location */
+    if (env1->cwp == (NWINDOWS - 1))
+        memcpy32(env1->regbase, env1->regbase + NWINDOWS * 16);
+    env1->cwp = new_cwp;
+    /* put the wrap registers at their temporary location */
+    if (new_cwp == (NWINDOWS - 1))
+        memcpy32(env1->regbase + NWINDOWS * 16, env1->regbase);
+    env1->regwptr = env1->regbase + (new_cwp * 16);
+    REGWPTR = env1->regwptr;
 }
 
-#ifdef TARGET_SPARC64
-#ifdef DEBUG_PCALL
-static const char * const excp_names[0x50] = {
-    [TT_TFAULT] = "Instruction Access Fault",
-    [TT_TMISS] = "Instruction Access MMU Miss",
-    [TT_CODE_ACCESS] = "Instruction Access Error",
-    [TT_ILL_INSN] = "Illegal Instruction",
-    [TT_PRIV_INSN] = "Privileged Instruction",
-    [TT_NFPU_INSN] = "FPU Disabled",
-    [TT_FP_EXCP] = "FPU Exception",
-    [TT_TOVF] = "Tag Overflow",
-    [TT_CLRWIN] = "Clean Windows",
-    [TT_DIV_ZERO] = "Division By Zero",
-    [TT_DFAULT] = "Data Access Fault",
-    [TT_DMISS] = "Data Access MMU Miss",
-    [TT_DATA_ACCESS] = "Data Access Error",
-    [TT_DPROT] = "Data Protection Error",
-    [TT_UNALIGNED] = "Unaligned Memory Access",
-    [TT_PRIV_ACT] = "Privileged Action",
-    [TT_EXTINT | 0x1] = "External Interrupt 1",
-    [TT_EXTINT | 0x2] = "External Interrupt 2",
-    [TT_EXTINT | 0x3] = "External Interrupt 3",
-    [TT_EXTINT | 0x4] = "External Interrupt 4",
-    [TT_EXTINT | 0x5] = "External Interrupt 5",
-    [TT_EXTINT | 0x6] = "External Interrupt 6",
-    [TT_EXTINT | 0x7] = "External Interrupt 7",
-    [TT_EXTINT | 0x8] = "External Interrupt 8",
-    [TT_EXTINT | 0x9] = "External Interrupt 9",
-    [TT_EXTINT | 0xa] = "External Interrupt 10",
-    [TT_EXTINT | 0xb] = "External Interrupt 11",
-    [TT_EXTINT | 0xc] = "External Interrupt 12",
-    [TT_EXTINT | 0xd] = "External Interrupt 13",
-    [TT_EXTINT | 0xe] = "External Interrupt 14",
-    [TT_EXTINT | 0xf] = "External Interrupt 15",
-};
-#endif
-
-void do_interrupt(int intno)
+void set_cwp(int new_cwp)
 {
-#ifdef DEBUG_PCALL
-    if (loglevel & CPU_LOG_INT) {
-        static int count;
-        const char *name;
-
-        if (intno < 0 || intno >= 0x180 || (intno > 0x4f && intno < 0x80))
-            name = "Unknown";
-        else if (intno >= 0x100)
-            name = "Trap Instruction";
-        else if (intno >= 0xc0)
-            name = "Window Fill";
-        else if (intno >= 0x80)
-            name = "Window Spill";
-        else {
-            name = excp_names[intno];
-            if (!name)
-                name = "Unknown";
-        }
-
-        fprintf(logfile, "%6d: %s (v=%04x) pc=%016" PRIx64 " npc=%016" PRIx64
-                " SP=%016" PRIx64 "\n",
-                count, name, intno,
-                env->pc,
-                env->npc, env->regwptr[6]);
-        cpu_dump_state(env, logfile, fprintf, 0);
-#if 0
-        {
-            int i;
-            uint8_t *ptr;
-
-            fprintf(logfile, "       code=");
-            ptr = (uint8_t *)env->pc;
-            for(i = 0; i < 16; i++) {
-                fprintf(logfile, " %02x", ldub(ptr + i));
-            }
-            fprintf(logfile, "\n");
-        }
-#endif
-        count++;
-    }
-#endif
-#if !defined(CONFIG_USER_ONLY)
-    if (env->tl == MAXTL) {
-        cpu_abort(env, "Trap 0x%04x while trap level is MAXTL, Error state",
-                  env->exception_index);
-        return;
-    }
-#endif
-    env->tsptr->tstate = ((uint64_t)GET_CCR(env) << 32) |
-        ((env->asi & 0xff) << 24) | ((env->pstate & 0xf3f) << 8) |
-        GET_CWP64(env);
-    env->tsptr->tpc = env->pc;
-    env->tsptr->tnpc = env->npc;
-    env->tsptr->tt = intno;
-    change_pstate(PS_PEF | PS_PRIV | PS_AG);
-
-    if (intno == TT_CLRWIN)
-        set_cwp((env->cwp - 1) & (NWINDOWS - 1));
-    else if ((intno & 0x1c0) == TT_SPILL)
-        set_cwp((env->cwp - env->cansave - 2) & (NWINDOWS - 1));
-    else if ((intno & 0x1c0) == TT_FILL)
-        set_cwp((env->cwp + 1) & (NWINDOWS - 1));
-    env->tbr &= ~0x7fffULL;
-    env->tbr |= ((env->tl > 1) ? 1 << 14 : 0) | (intno << 5);
-    if (env->tl < MAXTL - 1) {
-        env->tl++;
-    } else {
-        env->pstate |= PS_RED;
-        if (env->tl != MAXTL)
-            env->tl++;
-    }
-    env->tsptr = &env->ts[env->tl];
-    env->pc = env->tbr;
-    env->npc = env->pc + 4;
-    env->exception_index = 0;
+    cpu_set_cwp(env, new_cwp);
 }
-#else
-#ifdef DEBUG_PCALL
-static const char * const excp_names[0x80] = {
-    [TT_TFAULT] = "Instruction Access Fault",
-    [TT_ILL_INSN] = "Illegal Instruction",
-    [TT_PRIV_INSN] = "Privileged Instruction",
-    [TT_NFPU_INSN] = "FPU Disabled",
-    [TT_WIN_OVF] = "Window Overflow",
-    [TT_WIN_UNF] = "Window Underflow",
-    [TT_UNALIGNED] = "Unaligned Memory Access",
-    [TT_FP_EXCP] = "FPU Exception",
-    [TT_DFAULT] = "Data Access Fault",
-    [TT_TOVF] = "Tag Overflow",
-    [TT_EXTINT | 0x1] = "External Interrupt 1",
-    [TT_EXTINT | 0x2] = "External Interrupt 2",
-    [TT_EXTINT | 0x3] = "External Interrupt 3",
-    [TT_EXTINT | 0x4] = "External Interrupt 4",
-    [TT_EXTINT | 0x5] = "External Interrupt 5",
-    [TT_EXTINT | 0x6] = "External Interrupt 6",
-    [TT_EXTINT | 0x7] = "External Interrupt 7",
-    [TT_EXTINT | 0x8] = "External Interrupt 8",
-    [TT_EXTINT | 0x9] = "External Interrupt 9",
-    [TT_EXTINT | 0xa] = "External Interrupt 10",
-    [TT_EXTINT | 0xb] = "External Interrupt 11",
-    [TT_EXTINT | 0xc] = "External Interrupt 12",
-    [TT_EXTINT | 0xd] = "External Interrupt 13",
-    [TT_EXTINT | 0xe] = "External Interrupt 14",
-    [TT_EXTINT | 0xf] = "External Interrupt 15",
-    [TT_TOVF] = "Tag Overflow",
-    [TT_CODE_ACCESS] = "Instruction Access Error",
-    [TT_DATA_ACCESS] = "Data Access Error",
-    [TT_DIV_ZERO] = "Division By Zero",
-    [TT_NCP_INSN] = "Coprocessor Disabled",
-};
-#endif
 
-void do_interrupt(int intno)
+void helper_flush(target_ulong addr)
 {
-    int cwp;
-
-#ifdef DEBUG_PCALL
-    if (loglevel & CPU_LOG_INT) {
-        static int count;
-        const char *name;
-
-        if (intno < 0 || intno >= 0x100)
-            name = "Unknown";
-        else if (intno >= 0x80)
-            name = "Trap Instruction";
-        else {
-            name = excp_names[intno];
-            if (!name)
-                name = "Unknown";
-        }
-
-        fprintf(logfile, "%6d: %s (v=%02x) pc=%08x npc=%08x SP=%08x\n",
-                count, name, intno,
-                env->pc,
-                env->npc, env->regwptr[6]);
-        cpu_dump_state(env, logfile, fprintf, 0);
-#if 0
-        {
-            int i;
-            uint8_t *ptr;
-
-            fprintf(logfile, "       code=");
-            ptr = (uint8_t *)env->pc;
-            for(i = 0; i < 16; i++) {
-                fprintf(logfile, " %02x", ldub(ptr + i));
-            }
-            fprintf(logfile, "\n");
-        }
-#endif
-        count++;
-    }
-#endif
-#if !defined(CONFIG_USER_ONLY)
-    if (env->psret == 0) {
-        cpu_abort(env, "Trap 0x%02x while interrupts disabled, Error state",
-                  env->exception_index);
-        return;
-    }
-#endif
-    env->psret = 0;
-    cwp = (env->cwp - 1) & (NWINDOWS - 1);
-    set_cwp(cwp);
-    env->regwptr[9] = env->pc;
-    env->regwptr[10] = env->npc;
-    env->psrps = env->psrs;
-    env->psrs = 1;
-    env->tbr = (env->tbr & TBR_BASE_MASK) | (intno << 4);
-    env->pc = env->tbr;
-    env->npc = env->pc + 4;
-    env->exception_index = 0;
+    addr &= ~7;
+    tb_invalidate_page_range(addr, addr + 8);
 }
-#endif
 
 #if !defined(CONFIG_USER_ONLY)