Changed all syscalls to use syscall return object.

arch/alpha/alpha_linux_process.cc:
arch/alpha/alpha_tru64_process.cc:
cpu/exec_context.hh:
sim/process.hh:
sim/syscall_emul.cc:
sim/syscall_emul.hh:
    Changed all syscalls to use syscall return object
arch/alpha/isa_traits.hh:
    Added syscall return object that packages return value and return
    status into an object.
sim/process.cc:
    renamed variable name to nm so base class function name() can be called

--HG--
extra : convert_revision : 6609c5ffecc9e3519d7a0cd160879fd21d54abfc

1 files changed, 4 insertions, 4 deletions

diff --git a/cpu/exec_context.hh b/cpu/exec_context.hh
index 8437a5585..d6140d52f 100644
--- a/cpu/exec_context.hh
+++ b/cpu/exec_context.hh
@@ -435,20 +435,20 @@ class ExecContext
         regs.intRegFile[ArgumentReg0 + i] = val;
     }
 
-    void setSyscallReturn(int64_t return_value)
+    void setSyscallReturn(SyscallReturn return_value)
     {
         // check for error condition.  Alpha syscall convention is to
         // indicate success/failure in reg a3 (r19) and put the
         // return value itself in the standard return value reg (v0).
         const int RegA3 = 19;	// only place this is used
-        if (return_value >= 0) {
+        if (return_value.successful()) {
             // no error
             regs.intRegFile[RegA3] = 0;
-            regs.intRegFile[ReturnValueReg] = return_value;
+            regs.intRegFile[ReturnValueReg] = return_value.value();
         } else {
             // got an error, return details
             regs.intRegFile[RegA3] = (IntReg) -1;
-            regs.intRegFile[ReturnValueReg] = -return_value;
+            regs.intRegFile[ReturnValueReg] = -return_value.value();
         }
     }