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-rw-r--r--sim/syscall_emul.cc441
1 files changed, 0 insertions, 441 deletions
diff --git a/sim/syscall_emul.cc b/sim/syscall_emul.cc
deleted file mode 100644
index 00168b025..000000000
--- a/sim/syscall_emul.cc
+++ /dev/null
@@ -1,441 +0,0 @@
-/*
- * Copyright (c) 2003-2005 The Regents of The University of Michigan
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met: redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer;
- * redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution;
- * neither the name of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <fcntl.h>
-#include <unistd.h>
-
-#include <string>
-#include <iostream>
-
-#include "sim/syscall_emul.hh"
-#include "base/trace.hh"
-#include "cpu/exec_context.hh"
-#include "cpu/base.hh"
-#include "sim/process.hh"
-
-#include "sim/sim_events.hh"
-
-using namespace std;
-using namespace TheISA;
-
-void
-SyscallDesc::doSyscall(int callnum, Process *process, ExecContext *xc)
-{
- DPRINTFR(SyscallVerbose, "%s: syscall %s called\n",
- xc->getCpuPtr()->name(), name);
-
- SyscallReturn retval = (*funcPtr)(this, callnum, process, xc);
-
- DPRINTFR(SyscallVerbose, "%s: syscall %s returns %d\n",
- xc->getCpuPtr()->name(), name, retval.value());
-
- if (!(flags & SyscallDesc::SuppressReturnValue))
- xc->setSyscallReturn(retval);
-}
-
-
-SyscallReturn
-unimplementedFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- fatal("syscall %s (#%d) unimplemented.", desc->name, callnum);
-}
-
-
-SyscallReturn
-ignoreFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- warn("ignoring syscall %s(%d, %d, ...)", desc->name,
- xc->getSyscallArg(0), xc->getSyscallArg(1));
-
- return 0;
-}
-
-
-SyscallReturn
-exitFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- new SimExitEvent("syscall caused exit", xc->getSyscallArg(0) & 0xff);
-
- return 1;
-}
-
-
-SyscallReturn
-getpagesizeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- return (int)VMPageSize;
-}
-
-
-SyscallReturn
-obreakFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- // change brk addr to first arg
- Addr new_brk = xc->getSyscallArg(0);
- if (new_brk != 0)
- {
- p->brk_point = xc->getSyscallArg(0);
- }
- DPRINTF(SyscallVerbose, "Break Point changed to: %#X\n", p->brk_point);
- return p->brk_point;
-}
-
-
-SyscallReturn
-closeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- int target_fd = xc->getSyscallArg(0);
- int status = close(p->sim_fd(target_fd));
- if (status >= 0)
- p->free_fd(target_fd);
- return status;
-}
-
-
-SyscallReturn
-readFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- int fd = p->sim_fd(xc->getSyscallArg(0));
- int nbytes = xc->getSyscallArg(2);
- BufferArg bufArg(xc->getSyscallArg(1), nbytes);
-
- int bytes_read = read(fd, bufArg.bufferPtr(), nbytes);
-
- if (bytes_read != -1)
- bufArg.copyOut(xc->getMemPtr());
-
- return bytes_read;
-}
-
-SyscallReturn
-writeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- int fd = p->sim_fd(xc->getSyscallArg(0));
- int nbytes = xc->getSyscallArg(2);
- BufferArg bufArg(xc->getSyscallArg(1), nbytes);
-
- bufArg.copyIn(xc->getMemPtr());
-
- int bytes_written = write(fd, bufArg.bufferPtr(), nbytes);
-
- fsync(fd);
-
- return bytes_written;
-}
-
-
-SyscallReturn
-lseekFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- int fd = p->sim_fd(xc->getSyscallArg(0));
- uint64_t offs = xc->getSyscallArg(1);
- int whence = xc->getSyscallArg(2);
-
- off_t result = lseek(fd, offs, whence);
-
- return (result == (off_t)-1) ? -errno : result;
-}
-
-
-SyscallReturn
-munmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- // given that we don't really implement mmap, munmap is really easy
- return 0;
-}
-
-
-const char *hostname = "m5.eecs.umich.edu";
-
-SyscallReturn
-gethostnameFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- int name_len = xc->getSyscallArg(1);
- BufferArg name(xc->getSyscallArg(0), name_len);
-
- strncpy((char *)name.bufferPtr(), hostname, name_len);
-
- name.copyOut(xc->getMemPtr());
-
- return 0;
-}
-
-SyscallReturn
-unlinkFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- string path;
-
- if (xc->getMemPtr()->readString(path, xc->getSyscallArg(0)) != NoFault)
- return (TheISA::IntReg)-EFAULT;
-
- int result = unlink(path.c_str());
- return (result == -1) ? -errno : result;
-}
-
-SyscallReturn
-renameFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- string old_name;
-
- if (xc->getMemPtr()->readString(old_name, xc->getSyscallArg(0)) != NoFault)
- return -EFAULT;
-
- string new_name;
-
- if (xc->getMemPtr()->readString(new_name, xc->getSyscallArg(1)) != NoFault)
- return -EFAULT;
-
- int64_t result = rename(old_name.c_str(), new_name.c_str());
- return (result == -1) ? -errno : result;
-}
-
-SyscallReturn
-truncateFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- string path;
-
- if (xc->getMemPtr()->readString(path, xc->getSyscallArg(0)) != NoFault)
- return -EFAULT;
-
- off_t length = xc->getSyscallArg(1);
-
- int result = truncate(path.c_str(), length);
- return (result == -1) ? -errno : result;
-}
-
-SyscallReturn
-ftruncateFunc(SyscallDesc *desc, int num, Process *process, ExecContext *xc)
-{
- int fd = process->sim_fd(xc->getSyscallArg(0));
-
- if (fd < 0)
- return -EBADF;
-
- off_t length = xc->getSyscallArg(1);
-
- int result = ftruncate(fd, length);
- return (result == -1) ? -errno : result;
-}
-
-SyscallReturn
-chownFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
-{
- string path;
-
- if (xc->getMemPtr()->readString(path, xc->getSyscallArg(0)) != NoFault)
- return -EFAULT;
-
- /* XXX endianess */
- uint32_t owner = xc->getSyscallArg(1);
- uid_t hostOwner = owner;
- uint32_t group = xc->getSyscallArg(2);
- gid_t hostGroup = group;
-
- int result = chown(path.c_str(), hostOwner, hostGroup);
- return (result == -1) ? -errno : result;
-}
-
-SyscallReturn
-fchownFunc(SyscallDesc *desc, int num, Process *process, ExecContext *xc)
-{
- int fd = process->sim_fd(xc->getSyscallArg(0));
-
- if (fd < 0)
- return -EBADF;
-
- /* XXX endianess */
- uint32_t owner = xc->getSyscallArg(1);
- uid_t hostOwner = owner;
- uint32_t group = xc->getSyscallArg(2);
- gid_t hostGroup = group;
-
- int result = fchown(fd, hostOwner, hostGroup);
- return (result == -1) ? -errno : result;
-}
-
-
-SyscallReturn
-fcntlFunc(SyscallDesc *desc, int num, Process *process,
- ExecContext *xc)
-{
- int fd = xc->getSyscallArg(0);
-
- if (fd < 0 || process->sim_fd(fd) < 0)
- return -EBADF;
-
- int cmd = xc->getSyscallArg(1);
- switch (cmd) {
- case 0: // F_DUPFD
- // if we really wanted to support this, we'd need to do it
- // in the target fd space.
- warn("fcntl(%d, F_DUPFD) not supported, error returned\n", fd);
- return -EMFILE;
-
- case 1: // F_GETFD (get close-on-exec flag)
- case 2: // F_SETFD (set close-on-exec flag)
- return 0;
-
- case 3: // F_GETFL (get file flags)
- case 4: // F_SETFL (set file flags)
- // not sure if this is totally valid, but we'll pass it through
- // to the underlying OS
- warn("fcntl(%d, %d) passed through to host\n", fd, cmd);
- return fcntl(process->sim_fd(fd), cmd);
- // return 0;
-
- case 7: // F_GETLK (get lock)
- case 8: // F_SETLK (set lock)
- case 9: // F_SETLKW (set lock and wait)
- // don't mess with file locking... just act like it's OK
- warn("File lock call (fcntl(%d, %d)) ignored.\n", fd, cmd);
- return 0;
-
- default:
- warn("Unknown fcntl command %d\n", cmd);
- return 0;
- }
-}
-
-SyscallReturn
-pipePseudoFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- int fds[2], sim_fds[2];
- int pipe_retval = pipe(fds);
-
- if (pipe_retval < 0) {
- // error
- return pipe_retval;
- }
-
- sim_fds[0] = process->alloc_fd(fds[0]);
- sim_fds[1] = process->alloc_fd(fds[1]);
-
- // Alpha Linux convention for pipe() is that fd[0] is returned as
- // the return value of the function, and fd[1] is returned in r20.
- xc->setIntReg(SyscallPseudoReturnReg, sim_fds[1]);
- return sim_fds[0];
-}
-
-
-SyscallReturn
-getpidPseudoFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- // Make up a PID. There's no interprocess communication in
- // fake_syscall mode, so there's no way for a process to know it's
- // not getting a unique value.
-
- xc->setIntReg(SyscallPseudoReturnReg, 99);
- return 100;
-}
-
-
-SyscallReturn
-getuidPseudoFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- // Make up a UID and EUID... it shouldn't matter, and we want the
- // simulation to be deterministic.
-
- // EUID goes in r20.
- xc->setIntReg(SyscallPseudoReturnReg, 100); //EUID
- return 100; // UID
-}
-
-
-SyscallReturn
-getgidPseudoFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- // Get current group ID. EGID goes in r20.
- xc->setIntReg(SyscallPseudoReturnReg, 100); //EGID
- return 100;
-}
-
-
-SyscallReturn
-setuidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- // can't fathom why a benchmark would call this.
- warn("Ignoring call to setuid(%d)\n", xc->getSyscallArg(0));
- return 0;
-}
-
-SyscallReturn
-getpidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- // Make up a PID. There's no interprocess communication in
- // fake_syscall mode, so there's no way for a process to know it's
- // not getting a unique value.
-
- xc->setIntReg(SyscallPseudoReturnReg, 99); //PID
- return 100;
-}
-
-SyscallReturn
-getppidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- return 99;
-}
-
-SyscallReturn
-getuidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- return 100; // UID
-}
-
-SyscallReturn
-geteuidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- return 100; // UID
-}
-
-SyscallReturn
-getgidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- return 100;
-}
-
-SyscallReturn
-getegidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
-{
- return 100;
-}
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-28 02:03:43 +0000