From a04fac976f02377237bb827d46854b669ebc2397 Mon Sep 17 00:00:00 2001 From: Brandon Potter 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 ++++++++++++++++++++++ src/arch/alpha/tru64/tru64.hh | 24 ++++++++++++++++++++++-- 2 files changed, 44 insertions(+), 2 deletions(-) (limited to 'src/arch/alpha/tru64') 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]); diff --git a/src/arch/alpha/tru64/tru64.hh b/src/arch/alpha/tru64/tru64.hh index 92d6db842..e8ac3c7e8 100644 --- a/src/arch/alpha/tru64/tru64.hh +++ b/src/arch/alpha/tru64/tru64.hh @@ -63,8 +63,28 @@ class AlphaTru64 : public Tru64 //@} /// For mmap(). - static const unsigned TGT_MAP_ANONYMOUS = 0x10; - static const unsigned TGT_MAP_FIXED = 0x100; + static SyscallFlagTransTable mmapFlagTable[]; + + static const unsigned TGT_MAP_SHARED = 0x00001; + static const unsigned TGT_MAP_PRIVATE = 0x00002; + static const unsigned TGT_MAP_32BIT = 0x00040; + static const unsigned TGT_MAP_ANON = 0x00020; + static const unsigned TGT_MAP_DENYWRITE = 0x00800; + static const unsigned TGT_MAP_EXECUTABLE = 0x01000; + static const unsigned TGT_MAP_FILE = 0x00000; + static const unsigned TGT_MAP_GROWSDOWN = 0x00100; + static const unsigned TGT_MAP_HUGETLB = 0x40000; + static const unsigned TGT_MAP_LOCKED = 0x02000; + static const unsigned TGT_MAP_NONBLOCK = 0x10000; + static const unsigned TGT_MAP_NORESERVE = 0x04000; + static const unsigned TGT_MAP_POPULATE = 0x08000; + static const unsigned TGT_MAP_STACK = 0x20000; + static const unsigned TGT_MAP_ANONYMOUS = 0x00020; + static const unsigned TGT_MAP_FIXED = 0x00010; + + static const unsigned NUM_MMAP_FLAGS; + + //@{ //@{ /// For getsysinfo(). -- cgit v1.2.3