add fcntl64Func

use ThreadContext rename

src/arch/mips/isa/formats/branch.isa:
src/arch/mips/isa/formats/fp.isa:
src/arch/mips/isa/includes.isa:
    Use ThreadContext
src/sim/syscall_emul.cc:
    fcntl64 function using TC
src/sim/syscall_emul.hh:
    Add fcntl64func

--HG--
extra : convert_revision : b5e2348530473704388b1c5a2b59bf78360260a9

src/sim/syscall_emul.cc

@@ -340,6 +340,35 @@ fcntlFunc(SyscallDesc *desc, int num, Process *process,
     }
 }
 
+SyscallReturn
+fcntl64Func(SyscallDesc *desc, int num, Process *process,
+            ThreadContext *tc)
+{
+    int fd = tc->getSyscallArg(0);
+
+    if (fd < 0 || process->sim_fd(fd) < 0)
+        return -EBADF;
+
+    int cmd = tc->getSyscallArg(1);
+    switch (cmd) {
+      case 33: //F_GETLK64
+        warn("fcntl64(%d, F_GETLK64) not supported, error returned\n", fd);
+        return -EMFILE;
+
+      case 34: // F_SETLK64
+      case 35: // F_SETLKW64
+        warn("fcntl64(%d, F_SETLK(W)64) not supported, error returned\n", fd);
+        return -EMFILE;
+
+      default:
+        // not sure if this is totally valid, but we'll pass it through
+        // to the underlying OS
+        warn("fcntl64(%d, %d) passed through to host\n", fd, cmd);
+        return fcntl(process->sim_fd(fd), cmd);
+        // return 0;
+    }
+}
+
 SyscallReturn
 pipePseudoFunc(SyscallDesc *desc, int callnum, Process *process,
          ThreadContext *tc)

src/sim/syscall_emul.hh

@@ -249,6 +249,10 @@ SyscallReturn fchownFunc(SyscallDesc *desc, int num,
 SyscallReturn fcntlFunc(SyscallDesc *desc, int num,
                         Process *process, ThreadContext *tc);
 
+/// Target fcntl64() handler.
+SyscallReturn fcntl64Func(SyscallDesc *desc, int num,
+                        Process *process, ThreadContext *tc);
+
 /// Target setuid() handler.
 SyscallReturn setuidFunc(SyscallDesc *desc, int num,
                                Process *p, ThreadContext *tc);