arm: add access syscall for ARM SE mode

This patch adds the "access" syscall for ARM SE as required by some spec2006
benchmarks.

2 files changed, 21 insertions, 0 deletions

diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc
index 779e567f5..a86065317 100644
--- a/src/sim/syscall_emul.cc
+++ b/src/sim/syscall_emul.cc
@@ -851,3 +851,20 @@ cloneFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
     }
 }
 
+SyscallReturn
+accessFunc(SyscallDesc *desc, int callnum, LiveProcess *p, ThreadContext *tc)
+{
+    int index = 0;
+
+    string path;
+    if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index)))
+        return (TheISA::IntReg)-EFAULT;
+
+    // Adjust path for current working directory
+    path = p->fullPath(path);
+
+    mode_t mode = p->getSyscallArg(tc, index);
+
+    int result = access(path.c_str(), mode);
+    return (result == -1) ? -errno : result;
+}
diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
index e98e771d5..364b66c0a 100644
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -335,6 +335,10 @@ SyscallReturn getegidFunc(SyscallDesc *desc, int num,
 SyscallReturn cloneFunc(SyscallDesc *desc, int num,
                                LiveProcess *p, ThreadContext *tc);
 
+/// Target access() handler
+SyscallReturn accessFunc(SyscallDesc *desc, int num,
+                               LiveProcess *p, ThreadContext *tc);
+
 /// Futex system call
 ///  Implemented by Daniel Sanchez
 ///  Used by printf's in multi-threaded apps