syscall_emul: [PATCH 15/22] add clone/execve for threading and multiprocess simulations

Modifies the clone system call and adds execve system call. Requires allowing
processes to steal thread contexts from other processes in the same system
object and the ability to detach pieces of process state (such as MemState)
to allow dynamic sharing.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/sim/fd_array.hh b/src/sim/fd_array.hh
index 1d57c4654..a41e078e7 100644
--- a/src/sim/fd_array.hh
+++ b/src/sim/fd_array.hh
@@ -104,6 +104,14 @@ class FDArray
     int getSize() const { return _fdArray.size(); }
 
     /**
+     * Put the pointer specified by fdep into the _fdArray entry indexed
+     * by tgt_fd.
+     * @param tgt_fd Use target file descriptors to index the array.
+     * @param fdep Incoming pointer used to set the entry pointed to by tgt_fd.
+     */
+    void setFDEntry(int tgt_fd, std::shared_ptr<FDEntry> fdep);
+
+    /**
      * Try to close the host file descriptor. If successful, set the
      * specified file descriptor entry object pointer to nullptr.
      * Used to "close" the target file descriptor.