From f17a5faf44b01a07a2f97ff98fad01f974ec427b Mon Sep 17 00:00:00 2001
From: Michael LeBeane <michael.lebeane@amd.com>
Date: Tue, 13 Sep 2016 23:12:46 -0400
Subject: sim, syscall_emul: Add mmap to EmulatedDriver Add support for calling
 mmap on an EmulatedDriver file descriptor.

---
 src/sim/syscall_emul.hh | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'src/sim/syscall_emul.hh')

diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
index 7cce9e9c0..c11e9865f 100644
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -1284,7 +1284,17 @@ mmapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc,
     int sim_fd = -1;
     uint8_t *pmap = nullptr;
     if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) {
-        sim_fd = p->getSimFD(tgt_fd);
+        // Check for EmulatedDriver mmap
+        FDEntry *fde = p->getFDEntry(tgt_fd);
+        if (fde == NULL)
+            return -EBADF;
+
+        if (fde->driver != NULL) {
+            return fde->driver->mmap(p, tc, start, length, prot,
+                                     tgt_flags, tgt_fd, offset);
+        }
+        sim_fd = fde->fd;
+
         if (sim_fd < 0)
             return -EBADF;
 
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