Standardize clock parameter names to 'clock'.

[gem5.git] / sim / syscall_emul.cc

diff --git a/sim/syscall_emul.cc b/sim/syscall_emul.cc
index 9955d442196f7587d2133cf4365d07f75242fac8..22d62e4d1cdf21e42daa78e6808bb3f75e19c964 100644 (file)
--- a/sim/syscall_emul.cc
+++ b/sim/syscall_emul.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003 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
@@ -47,17 +47,17 @@ SyscallDesc::doSyscall(int callnum, Process *process, ExecContext *xc)
     DPRINTFR(SyscallVerbose, "%s: syscall %s called\n",
              xc->cpu->name(), name);
 
-    int retval = (*funcPtr)(this, callnum, process, xc);
+    SyscallReturn retval = (*funcPtr)(this, callnum, process, xc);
 
     DPRINTFR(SyscallVerbose, "%s: syscall %s returns %d\n",
-             xc->cpu->name(), name, retval);
+             xc->cpu->name(), name, retval.value());
 
-    if (!((flags & SyscallDesc::SuppressReturnValue) && retval == 0))
+    if (!(flags & SyscallDesc::SuppressReturnValue))
         xc->setSyscallReturn(retval);
 }
 
 
-int
+SyscallReturn
 unimplementedFunc(SyscallDesc *desc, int callnum, Process *process,
                   ExecContext *xc)
 {
@@ -70,7 +70,7 @@ unimplementedFunc(SyscallDesc *desc, int callnum, Process *process,
 }
 
 
-int
+SyscallReturn
 ignoreFunc(SyscallDesc *desc, int callnum, Process *process,
            ExecContext *xc)
 {
@@ -83,7 +83,7 @@ ignoreFunc(SyscallDesc *desc, int callnum, Process *process,
 }
 
 
-int
+SyscallReturn
 exitFunc(SyscallDesc *desc, int callnum, Process *process,
          ExecContext *xc)
 {
@@ -93,23 +93,28 @@ exitFunc(SyscallDesc *desc, int callnum, Process *process,
 }
 
 
-int
+SyscallReturn
 getpagesizeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
     return VMPageSize;
 }
 
 
-int
+SyscallReturn
 obreakFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
     // change brk addr to first arg
-    p->brk_point = xc->getSyscallArg(0);
+    Addr new_brk = xc->getSyscallArg(0);
+    if (new_brk != 0)
+    {
+        p->brk_point = xc->getSyscallArg(0);
+    }
+    DPRINTF(SyscallVerbose, "Break Point changed to: %#X\n", p->brk_point);
     return p->brk_point;
 }
 
 
-int
+SyscallReturn
 closeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
     int fd = p->sim_fd(xc->getSyscallArg(0));
@@ -117,7 +122,7 @@ closeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 }
 
 
-int
+SyscallReturn
 readFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
     int fd = p->sim_fd(xc->getSyscallArg(0));
@@ -132,7 +137,7 @@ readFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
     return bytes_read;
 }
 
-int
+SyscallReturn
 writeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
     int fd = p->sim_fd(xc->getSyscallArg(0));
@@ -149,7 +154,7 @@ writeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 }
 
 
-int
+SyscallReturn
 lseekFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
     int fd = p->sim_fd(xc->getSyscallArg(0));
@@ -162,7 +167,7 @@ lseekFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 }
 
 
-int
+SyscallReturn
 munmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
     // given that we don't really implement mmap, munmap is really easy
@@ -172,7 +177,7 @@ munmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 
 const char *hostname = "m5.eecs.umich.edu";
 
-int
+SyscallReturn
 gethostnameFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
 {
     int name_len = xc->getSyscallArg(1);
@@ -185,4 +190,32 @@ gethostnameFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
     return 0;
 }
 
+SyscallReturn
+unlinkFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+{
+    std::string path;
+
+    if (xc->mem->readString(path, xc->getSyscallArg(0)) != No_Fault)
+        return (TheISA::IntReg)-EFAULT;
+
+    int result = unlink(path.c_str());
+    return (result == -1) ? -errno : result;
+}
+
+SyscallReturn
+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 -EFAULT;
+
+    std::string new_name;
+
+    if (xc->mem->readString(new_name, xc->getSyscallArg(1)) != No_Fault)
+        return -EFAULT;
+
+    int64_t result = rename(old_name.c_str(),new_name.c_str());
+    return (result == -1) ? -errno : result;
+}