diff --git a/arch/alpha/alpha_linux_process.cc b/arch/alpha/alpha_linux_process.cc
index e65852a28..600de4447 100644
--- a/arch/alpha/alpha_linux_process.cc
+++ b/arch/alpha/alpha_linux_process.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003-2004 The Regents of The University of Michigan
+ * Copyright (c) 2003-2005 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -245,7 +245,7 @@ class Linux {
         strcpy(name->machine, "alpha");
 
         name.copyOut(xc->mem);
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Target osf_getsysyinfo() handler.  Even though this call is
@@ -265,7 +265,7 @@ class Linux {
               // I don't think this exactly matches the HW FPCR
               *fpcr = 0;
               fpcr.copyOut(xc->mem);
-              return SyscallReturn(0);
+              return 0;
           }
 
           default:
@@ -274,7 +274,7 @@ class Linux {
             break;
         }
 
-        return SyscallReturn(1);
+        return 1;
     }
 
     /// Target osf_setsysinfo() handler.
@@ -293,7 +293,7 @@ class Linux {
               fpcr.copyIn(xc->mem);
               DPRINTFR(SyscallVerbose, "osf_setsysinfo(SSI_IEEE_FP_CONTROL): "
                        " setting FPCR to 0x%x\n", *(uint64_t*)fpcr);
-              return SyscallReturn(0);
+              return 0;
           }
 
           default:
@@ -302,7 +302,7 @@ class Linux {
             break;
         }
 
-        return SyscallReturn(1);
+        return 1;
     }
 
     /// Target fnctl() handler.
@@ -313,7 +313,7 @@ class Linux {
         int fd = xc->getSyscallArg(0);
 
         if (fd < 0 || process->sim_fd(fd) < 0)
-            return SyscallReturn(-EBADF);
+            return -EBADF;
 
         int cmd = xc->getSyscallArg(1);
         switch (cmd) {
@@ -321,18 +321,18 @@ class Linux {
             // if we really wanted to support this, we'd need to do it
             // in the target fd space.
             warn("fcntl(%d, F_DUPFD) not supported, error returned\n", fd);
-            return SyscallReturn(-EMFILE);
+            return -EMFILE;
 
           case 1: // F_GETFD (get close-on-exec flag)
           case 2: // F_SETFD (set close-on-exec flag)
-            return SyscallReturn(0);
+            return 0;
 
           case 3: // F_GETFL (get file flags)
           case 4: // F_SETFL (set file flags)
             // not sure if this is totally valid, but we'll pass it through
             // to the underlying OS
             warn("fcntl(%d, %d) passed through to host\n", fd, cmd);
-            return SyscallReturn(fcntl(process->sim_fd(fd), cmd));
+            return fcntl(process->sim_fd(fd), cmd);
             // return 0;
 
           case 7: // F_GETLK  (get lock)
@@ -340,11 +340,11 @@ class Linux {
           case 9: // F_SETLKW (set lock and wait)
             // don't mess with file locking... just act like it's OK
             warn("File lock call (fcntl(%d, %d)) ignored.\n", fd, cmd);
-            return SyscallReturn(0);
+            return 0;
 
           default:
             warn("Unknown fcntl command %d\n", cmd);
-            return SyscallReturn(0);
+            return 0;
         }
     }
 
diff --git a/arch/alpha/alpha_tru64_process.cc b/arch/alpha/alpha_tru64_process.cc
index 93b9be0a8..22e74cb40 100644
--- a/arch/alpha/alpha_tru64_process.cc
+++ b/arch/alpha/alpha_tru64_process.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001-2004 The Regents of The University of Michigan
+ * Copyright (c) 2001-2005 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -489,7 +489,7 @@ class Tru64 {
         strcpy(name->machine, "alpha");
 
         name.copyOut(xc->mem);
-        return SyscallReturn(0);
+        return 0;
     }
 
 
@@ -507,21 +507,21 @@ class Tru64 {
               TypedBufferArg<uint32_t> max_cpu(xc->getSyscallArg(1));
               *max_cpu = process->numCpus();
               max_cpu.copyOut(xc->mem);
-              return SyscallReturn(1);
+              return 1;
           }
 
           case Tru64::GSI_CPUS_IN_BOX: {
               TypedBufferArg<uint32_t> cpus_in_box(xc->getSyscallArg(1));
               *cpus_in_box = process->numCpus();
               cpus_in_box.copyOut(xc->mem);
-              return SyscallReturn(1);
+              return 1;
           }
 
           case Tru64::GSI_PHYSMEM: {
               TypedBufferArg<uint64_t> physmem(xc->getSyscallArg(1));
               *physmem = 1024 * 1024;	// physical memory in KB
               physmem.copyOut(xc->mem);
-              return SyscallReturn(1);
+              return 1;
           }
 
           case Tru64::GSI_CPU_INFO: {
@@ -538,14 +538,14 @@ class Tru64 {
               infop->mhz = 667;
 
               infop.copyOut(xc->mem);
-              return SyscallReturn(1);
+              return 1;
           }
 
           case Tru64::GSI_PROC_TYPE: {
               TypedBufferArg<uint64_t> proc_type(xc->getSyscallArg(1));
               *proc_type = 11;
               proc_type.copyOut(xc->mem);
-              return SyscallReturn(1);
+              return 1;
           }
 
           case Tru64::GSI_PLATFORM_NAME: {
@@ -554,14 +554,14 @@ class Tru64 {
                       "COMPAQ Professional Workstation XP1000",
                       nbytes);
               bufArg.copyOut(xc->mem);
-              return SyscallReturn(1);
+              return 1;
           }
 
           case Tru64::GSI_CLK_TCK: {
               TypedBufferArg<uint64_t> clk_hz(xc->getSyscallArg(1));
               *clk_hz = 1024;
               clk_hz.copyOut(xc->mem);
-              return SyscallReturn(1);
+              return 1;
           }
 
           default:
@@ -570,7 +570,7 @@ class Tru64 {
             break;
         }
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Target fnctl() handler.
@@ -581,7 +581,7 @@ class Tru64 {
         int fd = xc->getSyscallArg(0);
 
         if (fd < 0 || process->sim_fd(fd) < 0)
-            return SyscallReturn(-EBADF);
+            return -EBADF;
 
         int cmd = xc->getSyscallArg(1);
         switch (cmd) {
@@ -589,18 +589,18 @@ class Tru64 {
             // if we really wanted to support this, we'd need to do it
             // in the target fd space.
             warn("fcntl(%d, F_DUPFD) not supported, error returned\n", fd);
-            return SyscallReturn(-EMFILE);
+            return -EMFILE;
 
           case 1: // F_GETFD (get close-on-exec flag)
           case 2: // F_SETFD (set close-on-exec flag)
-            return SyscallReturn(0);
+            return 0;
 
           case 3: // F_GETFL (get file flags)
           case 4: // F_SETFL (set file flags)
             // not sure if this is totally valid, but we'll pass it through
             // to the underlying OS
             warn("fcntl(%d, %d) passed through to host\n", fd, cmd);
-            return SyscallReturn(fcntl(process->sim_fd(fd), cmd));
+            return fcntl(process->sim_fd(fd), cmd);
             // return 0;
 
           case 7: // F_GETLK  (get lock)
@@ -608,11 +608,11 @@ class Tru64 {
           case 9: // F_SETLKW (set lock and wait)
             // don't mess with file locking... just act like it's OK
             warn("File lock call (fcntl(%d, %d)) ignored.\n", fd, cmd);
-            return SyscallReturn(0);
+            return 0;
 
           default:
             warn("Unknown fcntl command %d\n", cmd);
-            return SyscallReturn(0);
+            return 0;
         }
     }
 
@@ -638,7 +638,7 @@ class Tru64 {
         // check for error
         if (host_result < 0) {
             delete [] host_buf;
-            return SyscallReturn(-errno);
+            return -errno;
         }
 
         // no error: copy results back to target space
@@ -669,7 +669,7 @@ class Tru64 {
         *basep = host_basep;
         basep.copyOut(xc->mem);
 
-        return SyscallReturn(tgt_buf_ptr - tgt_buf);
+        return tgt_buf_ptr - tgt_buf;
     }
 
     /// Target sigreturn() handler.
@@ -695,7 +695,7 @@ class Tru64 {
 
         regs->miscRegs.fpcr = sc->sc_fpcr;
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Target table() handler.
@@ -712,7 +712,7 @@ class Tru64 {
         switch (id) {
           case Tru64::TBL_SYSINFO: {
               if (index != 0 || nel != 1 || lel != sizeof(Tru64::tbl_sysinfo))
-                  return SyscallReturn(-EINVAL);
+                  return -EINVAL;
               TypedBufferArg<Tru64::tbl_sysinfo> elp(xc->getSyscallArg(2));
 
               const int clk_hz = one_million;
@@ -726,12 +726,12 @@ class Tru64 {
               elp->si_boottime = seconds_since_epoch; // seconds since epoch?
               elp->si_max_procs = process->numCpus();
               elp.copyOut(xc->mem);
-              return SyscallReturn(0);
+              return 0;
           }
 
           default:
             cerr << "table(): id " << id << " unknown." << endl;
-            return SyscallReturn(-EINVAL);
+            return -EINVAL;
         }
     }
 
@@ -766,7 +766,7 @@ class Tru64 {
             argp.copyOut(xc->mem);
         }
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// NXM library version stamp.
@@ -877,7 +877,7 @@ class Tru64 {
         *configptr_ptr = config_addr;
         configptr_ptr.copyOut(xc->mem);
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Initialize execution context.
@@ -946,7 +946,7 @@ class Tru64 {
             *kidp = 99;
             kidp.copyOut(xc->mem);
 
-            return SyscallReturn(0);
+            return 0;
         } else if (attrp->type == Tru64::NXM_TYPE_VP) {
             // A real "virtual processor" kernel thread.  Need to fork
             // this thread on another CPU.
@@ -994,7 +994,7 @@ class Tru64 {
                     *kidp = thread_index;
                     kidp.copyOut(xc->mem);
 
-                    return SyscallReturn(0);
+                    return 0;
                 }
             }
 
@@ -1007,7 +1007,7 @@ class Tru64 {
             abort();
         }
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Thread idle call (like yield()).
@@ -1015,7 +1015,7 @@ class Tru64 {
     nxm_idleFunc(SyscallDesc *desc, int callnum, Process *process,
                  ExecContext *xc)
     {
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Block thread.
@@ -1032,7 +1032,7 @@ class Tru64 {
         cout << xc->cpu->name() << ": nxm_thread_block " << tid << " " << secs
              << " " << flags << " " << action << " " << usecs << endl;
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// block.
@@ -1053,7 +1053,7 @@ class Tru64 {
              << " " << secs << " " << usecs
              << " " << flags << endl;
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Unblock thread.
@@ -1066,7 +1066,7 @@ class Tru64 {
         cout << xc->cpu->name() << ": nxm_unblock "
              << hex << uaddr << dec << endl;
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Switch thread priority.
@@ -1081,7 +1081,7 @@ class Tru64 {
         //
         // Since we assume at most one "kernel" thread per CPU, it's
         // always safe to return false here.
-        return SyscallReturn(0); //false;
+        return 0; //false;
     }
 
 
@@ -1165,7 +1165,7 @@ class Tru64 {
         // Return 0 since we will always return to the user with the lock
         // acquired.  We will just keep the context inactive until that is
         // true.
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Try lock (non-blocking).
@@ -1182,9 +1182,9 @@ class Tru64 {
             // lock is free: grab it
             *lockp = 1;
             lockp.copyOut(xc->mem);
-            return SyscallReturn(0);
+            return 0;
         } else {
-            return SyscallReturn(1);
+            return 1;
         }
     }
 
@@ -1197,7 +1197,7 @@ class Tru64 {
 
         m5_unlock_mutex(uaddr, process, xc);
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Signal ocndition.
@@ -1210,7 +1210,7 @@ class Tru64 {
         // Wake up one process waiting on the condition variable.
         activate_waiting_context(cond_addr, process);
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Wake up all processes waiting on the condition variable.
@@ -1222,7 +1222,7 @@ class Tru64 {
 
         activate_waiting_context(cond_addr, process, true);
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Wait on a condition.
@@ -1244,7 +1244,7 @@ class Tru64 {
         process->waitList.push_back(Process::WaitRec(cond_addr, xc));
         xc->suspend();
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Thread exit.
@@ -1255,7 +1255,7 @@ class Tru64 {
         assert(xc->status() == ExecContext::Active);
         xc->deallocate();
 
-        return SyscallReturn(0);
+        return 0;
     }
 
     /// Array of syscall descriptors for Mach syscalls, indexed by
@@ -1302,7 +1302,7 @@ class Tru64 {
 
         doSyscall(new_callnum, process, xc);
 
-        return SyscallReturn(0);
+        return 0;
     }
 
 };  // class Tru64
diff --git a/arch/alpha/isa_traits.hh b/arch/alpha/isa_traits.hh
index d9c1a506e..9327fa88b 100644
--- a/arch/alpha/isa_traits.hh
+++ b/arch/alpha/isa_traits.hh
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003-2004 The Regents of The University of Michigan
+ * Copyright (c) 2003-2005 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sim/syscall_emul.cc b/sim/syscall_emul.cc
index ae865be86..22d62e4d1 100644
--- a/sim/syscall_emul.cc
+++ b/sim/syscall_emul.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003-2004 The Regents of The University of Michigan
+ * Copyright (c) 2003-2005 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -79,7 +79,7 @@ ignoreFunc(SyscallDesc *desc, int callnum, Process *process,
                            << ", " << xc->getSyscallArg(1)
                            << ", ...)" << endl;
 
-    return SyscallReturn(0);
+    return 0;
 }
 
 
@@ -89,14 +89,14 @@ exitFunc(SyscallDesc *desc, int callnum, Process *process,
 {
     new SimExitEvent("syscall caused exit", xc->getSyscallArg(0) & 0xff);
 
-    return SyscallReturn(1);
+    return 1;
 }
 
 
 SyscallReturn
 getpagesizeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
-    return SyscallReturn(VMPageSize);
+    return VMPageSize;
 }
 
 
@@ -109,7 +109,8 @@ obreakFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
     {
         p->brk_point = xc->getSyscallArg(0);
     }
-    return SyscallReturn(p->brk_point);
+    DPRINTF(SyscallVerbose, "Break Point changed to: %#X\n", p->brk_point);
+    return p->brk_point;
 }
 
 
@@ -117,7 +118,7 @@ SyscallReturn
 closeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
     int fd = p->sim_fd(xc->getSyscallArg(0));
-    return SyscallReturn(close(fd));
+    return close(fd);
 }
 
 
@@ -133,7 +134,7 @@ readFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
     if (bytes_read != -1)
         bufArg.copyOut(xc->mem);
 
-    return SyscallReturn(bytes_read);
+    return bytes_read;
 }
 
 SyscallReturn
@@ -149,7 +150,7 @@ writeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 
     fsync(fd);
 
-    return SyscallReturn(bytes_written);
+    return bytes_written;
 }
 
 
@@ -162,8 +163,7 @@ lseekFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 
     off_t result = lseek(fd, offs, whence);
 
-    return (result == (off_t)-1) ? SyscallReturn(-errno) :
-                                   SyscallReturn(result);
+    return (result == (off_t)-1) ? -errno : result;
 }
 
 
@@ -171,7 +171,7 @@ SyscallReturn
 munmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
     // given that we don't really implement mmap, munmap is really easy
-    return SyscallReturn(0);
+    return 0;
 }
 
 
@@ -187,7 +187,7 @@ gethostnameFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 
     name.copyOut(xc->mem);
 
-    return SyscallReturn(0);
+    return 0;
 }
 
 SyscallReturn
@@ -199,7 +199,7 @@ unlinkFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
         return (TheISA::IntReg)-EFAULT;
 
     int result = unlink(path.c_str());
-    return (result == -1) ? SyscallReturn(-errno) : SyscallReturn(result);
+    return (result == -1) ? -errno : result;
 }
 
 SyscallReturn
@@ -208,14 +208,14 @@ renameFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
     std::string old_name;
 
     if (xc->mem->readString(old_name, xc->getSyscallArg(0)) != No_Fault)
-        return SyscallReturn(-EFAULT);
+        return -EFAULT;
 
     std::string new_name;
 
     if (xc->mem->readString(new_name, xc->getSyscallArg(1)) != No_Fault)
-        return SyscallReturn(-EFAULT);
+        return -EFAULT;
 
     int64_t result = rename(old_name.c_str(),new_name.c_str());
-    return (result == -1) ? SyscallReturn(-errno) : SyscallReturn(result);
+    return (result == -1) ? -errno : result;
 }
 
diff --git a/sim/syscall_emul.hh b/sim/syscall_emul.hh
index 5f1b8144e..51a075a28 100644
--- a/sim/syscall_emul.hh
+++ b/sim/syscall_emul.hh
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003-2004 The Regents of The University of Michigan
+ * Copyright (c) 2003-2005 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -251,7 +251,7 @@ ioctlFunc(SyscallDesc *desc, int callnum, Process *process,
 
     if (fd < 0 || process->sim_fd(fd) < 0) {
         // doesn't map to any simulator fd: not a valid target fd
-        return SyscallReturn(-EBADF);
+        return -EBADF;
     }
 
     switch (req) {
@@ -263,7 +263,7 @@ ioctlFunc(SyscallDesc *desc, int callnum, Process *process,
       case OS::TIOCGETC:
       case OS::TIOCGETS:
       case OS::TIOCGETA:
-        return SyscallReturn(-ENOTTY);
+        return -ENOTTY;
 
       default:
         fatal("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ 0x%llx\n", fd, req, xc->readPC());
@@ -279,13 +279,13 @@ openFunc(SyscallDesc *desc, int callnum, Process *process,
     std::string path;
 
     if (xc->mem->readString(path, xc->getSyscallArg(0)) != No_Fault)
-        return SyscallReturn(-EFAULT);
+        return -EFAULT;
 
     if (path == "/dev/sysdev0") {
         // This is a memory-mapped high-resolution timer device on Alpha.
         // We don't support it, so just punt.
         DCOUT(SyscallWarnings) << "Ignoring open(" << path << ", ...)" << std::endl;
-        return SyscallReturn(-ENOENT);
+        return -ENOENT;
     }
 
     int tgtFlags = xc->getSyscallArg(1);
@@ -311,7 +311,7 @@ openFunc(SyscallDesc *desc, int callnum, Process *process,
     // open the file
     int fd = open(path.c_str(), hostFlags, mode);
 
-    return (fd == -1) ? SyscallReturn(-errno) : SyscallReturn(process->open_fd(fd));
+    return (fd == -1) ? -errno : process->open_fd(fd);
 }
 
 
@@ -324,17 +324,17 @@ statFunc(SyscallDesc *desc, int callnum, Process *process,
     std::string path;
 
     if (xc->mem->readString(path, xc->getSyscallArg(0)) != No_Fault)
-        return SyscallReturn(-EFAULT);
+        return -EFAULT;
 
     struct stat hostBuf;
     int result = stat(path.c_str(), &hostBuf);
 
     if (result < 0)
-        return SyscallReturn(errno);
+        return errno;
 
     OS::copyOutStatBuf(xc->mem, xc->getSyscallArg(1), &hostBuf);
 
-    return SyscallReturn(0);
+    return 0;
 }
 
 
@@ -347,17 +347,17 @@ lstatFunc(SyscallDesc *desc, int callnum, Process *process,
     std::string path;
 
     if (xc->mem->readString(path, xc->getSyscallArg(0)) != No_Fault)
-        return SyscallReturn(-EFAULT);
+        return -EFAULT;
 
     struct stat hostBuf;
     int result = lstat(path.c_str(), &hostBuf);
 
     if (result < 0)
-        return SyscallReturn(-errno);
+        return -errno;
 
     OS::copyOutStatBuf(xc->mem, xc->getSyscallArg(1), &hostBuf);
 
-    return SyscallReturn(0);
+    return 0;
 }
 
 /// Target fstat() handler.
@@ -371,17 +371,17 @@ fstatFunc(SyscallDesc *desc, int callnum, Process *process,
     // DPRINTFR(SyscallVerbose, "fstat(%d, ...)\n", fd);
 
     if (fd < 0)
-        return SyscallReturn(-EBADF);
+        return -EBADF;
 
     struct stat hostBuf;
     int result = fstat(fd, &hostBuf);
 
     if (result < 0)
-        return SyscallReturn(-errno);
+        return -errno;
 
     OS::copyOutStatBuf(xc->mem, xc->getSyscallArg(1), &hostBuf);
 
-    return SyscallReturn(0);
+    return 0;
 }
 
 
@@ -419,7 +419,7 @@ mmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
                 "This will break if not /dev/zero.", xc->getSyscallArg(4));
     }
 
-    return SyscallReturn(start);
+    return start;
 }
 
 /// Target getrlimit() handler.
@@ -444,7 +444,7 @@ getrlimitFunc(SyscallDesc *desc, int callnum, Process *process,
     }
 
     rlp.copyOut(xc->mem);
-    return SyscallReturn(0);
+    return 0;
 }
 
 /// Target gettimeofday() handler.
@@ -460,7 +460,7 @@ gettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process,
 
     tp.copyOut(xc->mem);
 
-    return SyscallReturn(0);
+    return 0;
 }
 
 
@@ -501,7 +501,7 @@ getrusageFunc(SyscallDesc *desc, int callnum, Process *process,
 
     rup.copyOut(xc->mem);
 
-    return SyscallReturn(0);
+    return 0;
 }
 
 #endif // __SIM_SYSCALL_EMUL_HH__