[gem5-dev] changeset in gem5: sim: fix function for emulating dup()

[Nilay Vaish]

changeset 024af426b59a in /z/repo/gem5
details: http://repo.gem5.org/gem5?cmd=changeset;node=024af426b59a
description:
        sim: fix function for emulating dup()
        The function was using the host fd to obtain the fd object from the 
simulated
        process.

diffstat:

 src/sim/syscall_emul.cc |  9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diffs (22 lines):

diff -r 46070443051e -r 024af426b59a src/sim/syscall_emul.cc
--- a/src/sim/syscall_emul.cc   Wed Apr 08 15:56:06 2015 -0500
+++ b/src/sim/syscall_emul.cc   Mon Apr 13 17:33:57 2015 -0500
@@ -594,13 +594,14 @@
 dupFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
 {
     int index = 0;
-    int fd = process->sim_fd(process->getSyscallArg(tc, index));
-    if (fd < 0)
+    int tgt_fd = process->getSyscallArg(tc, index);
+    int sim_fd = process->sim_fd(tgt_fd);
+    if (sim_fd < 0)
         return -EBADF;
 
-    Process::FdMap *fdo = process->sim_fd_obj(fd);
+    Process::FdMap *fdo = process->sim_fd_obj(tgt_fd);
 
-    int result = dup(fd);
+    int result = dup(sim_fd);
     return (result == -1) ? -errno :
         process->alloc_fd(result, fdo->filename, fdo->flags, fdo->mode, false);
 }
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