From a2ed7d5575fb7e847314bb87b92c73459149f2d0 Mon Sep 17 00:00:00 2001
From: Brandon Potter <brandon.potter@amd.com>
Date: Wed, 18 Apr 2018 14:48:19 -0400
Subject: sim-se: add socket-based functionality

Add socket, socketpair, bind, list, connect and shutdown
system calls.

Change-Id: I635af3fca410f96fe28f8fe497e3d457a9dbc470
Reviewed-on: https://gem5-review.googlesource.com/c/12113
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Anthony Gutierrez <anthony.gutierrez@amd.com>
---
 src/sim/syscall_emul.cc | 80 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)

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

diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc
index e79e79c62..3b35d34e9 100644
--- a/src/sim/syscall_emul.cc
+++ b/src/sim/syscall_emul.cc
@@ -1224,3 +1224,83 @@ getdents64Func(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc)
     return getdentsImpl<LinDent64, SYS_getdents64>(desc, callnum, p, tc);
 }
 #endif
+
+SyscallReturn
+shutdownFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc)
+{
+    int index = 0;
+    int tgt_fd = p->getSyscallArg(tc, index);
+    int how = p->getSyscallArg(tc, index);
+
+    auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]);
+    if (!sfdp)
+        return -EBADF;
+    int sim_fd = sfdp->getSimFD();
+
+    int retval = shutdown(sim_fd, how);
+
+    return (retval == -1) ? -errno : retval;
+}
+
+SyscallReturn
+bindFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc)
+{
+    int index = 0;
+    int tgt_fd = p->getSyscallArg(tc, index);
+    Addr buf_ptr = p->getSyscallArg(tc, index);
+    int addrlen = p->getSyscallArg(tc, index);
+
+    BufferArg bufSock(buf_ptr, addrlen);
+    bufSock.copyIn(tc->getMemProxy());
+
+    auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]);
+    if (!sfdp)
+        return -EBADF;
+    int sim_fd = sfdp->getSimFD();
+
+    int status = ::bind(sim_fd,
+                        (struct sockaddr *)bufSock.bufferPtr(),
+                        addrlen);
+
+    return (status == -1) ? -errno : status;
+}
+
+SyscallReturn
+listenFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc)
+{
+    int index = 0;
+    int tgt_fd = p->getSyscallArg(tc, index);
+    int backlog = p->getSyscallArg(tc, index);
+
+    auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]);
+    if (!sfdp)
+        return -EBADF;
+    int sim_fd = sfdp->getSimFD();
+
+    int status = listen(sim_fd, backlog);
+
+    return (status == -1) ? -errno : status;
+}
+
+SyscallReturn
+connectFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc)
+{
+    int index = 0;
+    int tgt_fd = p->getSyscallArg(tc, index);
+    Addr buf_ptr = p->getSyscallArg(tc, index);
+    int addrlen = p->getSyscallArg(tc, index);
+
+    BufferArg addr(buf_ptr, addrlen);
+    addr.copyIn(tc->getMemProxy());
+
+    auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]);
+    if (!sfdp)
+        return -EBADF;
+    int sim_fd = sfdp->getSimFD();
+
+    int status = connect(sim_fd,
+                         (struct sockaddr *)addr.bufferPtr(),
+                         (socklen_t)addrlen);
+
+    return (status == -1) ? -errno : status;
+}
-- 
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