From a04fac976f02377237bb827d46854b669ebc2397 Mon Sep 17 00:00:00 2001
From: Brandon Potter <brandon.potter@amd.com>
Date: Thu, 17 Mar 2016 10:24:17 -0700
Subject: syscall_emul: extend mmap system call to support file backed mmaps

For O3, which has a stat that counts reg reads, there is an additional
reg read per mmap() call since there's an arg we no longer ignore.
Otherwise, stats should not be affected.
---
 src/arch/alpha/tru64/tru64.cc | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'src/arch/alpha/tru64/tru64.cc')

diff --git a/src/arch/alpha/tru64/tru64.cc b/src/arch/alpha/tru64/tru64.cc
index 1854a02f1..1fd589f66 100644
--- a/src/arch/alpha/tru64/tru64.cc
+++ b/src/arch/alpha/tru64/tru64.cc
@@ -68,5 +68,27 @@ SyscallFlagTransTable AlphaTru64::openFlagTable[] = {
 const int AlphaTru64::NUM_OPEN_FLAGS =
         (sizeof(AlphaTru64::openFlagTable)/sizeof(AlphaTru64::openFlagTable[0]));
 
+// mmap(2) flags translation table
+SyscallFlagTransTable AlphaTru64::mmapFlagTable[] = {
+  { TGT_MAP_SHARED, MAP_SHARED },
+  { TGT_MAP_PRIVATE, MAP_PRIVATE },
+  { TGT_MAP_32BIT, MAP_32BIT},
+  { TGT_MAP_ANON, MAP_ANON },
+  { TGT_MAP_DENYWRITE, MAP_DENYWRITE },
+  { TGT_MAP_EXECUTABLE, MAP_EXECUTABLE },
+  { TGT_MAP_FILE, MAP_FILE },
+  { TGT_MAP_GROWSDOWN, MAP_GROWSDOWN },
+  { TGT_MAP_HUGETLB, MAP_HUGETLB },
+  { TGT_MAP_LOCKED, MAP_LOCKED },
+  { TGT_MAP_NONBLOCK, MAP_NONBLOCK },
+  { TGT_MAP_NORESERVE, MAP_NORESERVE },
+  { TGT_MAP_POPULATE, MAP_POPULATE },
+  { TGT_MAP_STACK, MAP_STACK },
+  { TGT_MAP_ANONYMOUS, MAP_ANONYMOUS },
+  { TGT_MAP_FIXED, MAP_FIXED },
+};
 
+const unsigned AlphaTru64::NUM_MMAP_FLAGS =
+        sizeof(AlphaTru64::mmapFlagTable) /
+        sizeof(AlphaTru64::mmapFlagTable[0]);
 
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