SyscallReturn retval = (*funcPtr)(this, callnum, process, tc);
- DPRINTFR(SyscallVerbose, "%d: %s: syscall %s returns %d\n",
- curTick(), tc->getCpuPtr()->name(), name, retval.encodedValue());
+ if (retval.needsRetry()) {
+ DPRINTFS(SyscallVerbose, tc->getCpuPtr(), "syscall %s needs retry\n",
+ name);
+ } else {
+ DPRINTFS(SyscallVerbose, tc->getCpuPtr(), "syscall %s returns %d\n",
+ name, retval.encodedValue());
+ }
- if (!(flags & SyscallDesc::SuppressReturnValue))
+ if (!(flags & SyscallDesc::SuppressReturnValue) && !retval.needsRetry())
process->setSyscallReturn(tc, retval);
}
ThreadContext *tc)
{
int index = 0;
- warn("ignoring syscall %s(%d, ...)", desc->name,
- process->getSyscallArg(tc, index));
+ const char *extra_text = "";
- return 0;
-}
+ if (desc->warnOnce()) {
+ if (desc->warned)
+ return 0;
+ desc->warned = true;
+ extra_text = "\n (further warnings will be suppressed)";
+ }
-SyscallReturn
-ignoreWarnOnceFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
-{
- int index = 0;
- warn_once("ignoring syscall %s(%d, ...)", desc->name,
- process->getSyscallArg(tc, index));
+ warn("ignoring syscall %s(%d, ...)%s", desc->name,
+ process->getSyscallArg(tc, index), extra_text);
return 0;
}
exitGroupFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
ThreadContext *tc)
{
- // really should just halt all thread contexts belonging to this
- // process in case there's another process running...
- int index = 0;
- exitSimLoop("target called exit()",
- process->getSyscallArg(tc, index) & 0xff);
+ // halt all threads belonging to this process
+ for (auto i: process->contextIds) {
+ process->system->getThreadContext(i)->halt();
+ }
+
+ if (!process->system->numRunningContexts()) {
+ // all threads belonged to this process... exit simulator
+ int index = 0;
+ exitSimLoop("target called exit()",
+ process->getSyscallArg(tc, index) & 0xff);
+ }
return 1;
}
closeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
- int target_fd = p->getSyscallArg(tc, index);
- int sim_fd = p->sim_fd(target_fd);
+ int tgt_fd = p->getSyscallArg(tc, index);
+
+ int sim_fd = p->getSimFD(tgt_fd);
+ if (sim_fd < 0)
+ return -EBADF;
+
int status = 0;
if (sim_fd > 2)
status = close(sim_fd);
if (status >= 0)
- p->free_fd(target_fd);
+ p->resetFDEntry(tgt_fd);
return status;
}
readFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
- int fd = p->sim_fd(p->getSyscallArg(tc, index));
+ int tgt_fd = p->getSyscallArg(tc, index);
Addr bufPtr = p->getSyscallArg(tc, index);
int nbytes = p->getSyscallArg(tc, index);
BufferArg bufArg(bufPtr, nbytes);
- int bytes_read = read(fd, bufArg.bufferPtr(), nbytes);
+ int sim_fd = p->getSimFD(tgt_fd);
+ if (sim_fd < 0)
+ return -EBADF;
+
+ int bytes_read = read(sim_fd, bufArg.bufferPtr(), nbytes);
if (bytes_read != -1)
bufArg.copyOut(tc->getMemProxy());
writeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
- int fd = p->sim_fd(p->getSyscallArg(tc, index));
+ int tgt_fd = p->getSyscallArg(tc, index);
Addr bufPtr = p->getSyscallArg(tc, index);
int nbytes = p->getSyscallArg(tc, index);
BufferArg bufArg(bufPtr, nbytes);
+ int sim_fd = p->getSimFD(tgt_fd);
+ if (sim_fd < 0)
+ return -EBADF;
+
bufArg.copyIn(tc->getMemProxy());
- int bytes_written = write(fd, bufArg.bufferPtr(), nbytes);
+ int bytes_written = write(sim_fd, bufArg.bufferPtr(), nbytes);
- fsync(fd);
+ fsync(sim_fd);
return bytes_written;
}
lseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
- int fd = p->sim_fd(p->getSyscallArg(tc, index));
+ int tgt_fd = p->getSyscallArg(tc, index);
uint64_t offs = p->getSyscallArg(tc, index);
int whence = p->getSyscallArg(tc, index);
- off_t result = lseek(fd, offs, whence);
+ int sim_fd = p->getSimFD(tgt_fd);
+ if (sim_fd < 0)
+ return -EBADF;
+
+ off_t result = lseek(sim_fd, offs, whence);
return (result == (off_t)-1) ? -errno : result;
}
_llseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
int index = 0;
- int fd = p->sim_fd(p->getSyscallArg(tc, index));
+ int tgt_fd = p->getSyscallArg(tc, index);
uint64_t offset_high = p->getSyscallArg(tc, index);
uint32_t offset_low = p->getSyscallArg(tc, index);
Addr result_ptr = p->getSyscallArg(tc, index);
int whence = p->getSyscallArg(tc, index);
+ int sim_fd = p->getSimFD(tgt_fd);
+ if (sim_fd < 0)
+ return -EBADF;
+
uint64_t offset = (offset_high << 32) | offset_low;
- uint64_t result = lseek(fd, offset, whence);
+ uint64_t result = lseek(sim_fd, offset, whence);
result = TheISA::htog(result);
if (result == (off_t)-1) {
result_buf.copyOut(tc->getMemProxy());
return 0;
}
-
-
- return (result == (off_t)-1) ? -errno : result;
}
SyscallReturn
unlinkFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
+{
+ return unlinkHelper(desc, num, p, tc, 0);
+}
+
+SyscallReturn
+unlinkHelper(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc,
+ int index)
{
string path;
- int index = 0;
if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index)))
return -EFAULT;
LiveProcess *process, ThreadContext *tc)
{
int index = 0;
- int fd = process->sim_fd(process->getSyscallArg(tc, index));
+ int tgt_fd = process->getSyscallArg(tc, index);
+ off_t length = process->getSyscallArg(tc, index);
- if (fd < 0)
+ int sim_fd = process->getSimFD(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
- off_t length = process->getSyscallArg(tc, index);
-
- int result = ftruncate(fd, length);
+ int result = ftruncate(sim_fd, length);
return (result == -1) ? -errno : result;
}
LiveProcess *process, ThreadContext *tc)
{
int index = 0;
- int fd = process->sim_fd(process->getSyscallArg(tc, index));
+ int tgt_fd = process->getSyscallArg(tc, index);
+ int64_t length = process->getSyscallArg(tc, index, 64);
- if (fd < 0)
+ int sim_fd = process->getSimFD(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
- int64_t length = process->getSyscallArg(tc, index, 64);
-
#if NO_STAT64
- int result = ftruncate(fd, length);
+ int result = ftruncate(sim_fd, length);
#else
- int result = ftruncate64(fd, length);
+ int result = ftruncate64(sim_fd, length);
#endif
return (result == -1) ? -errno : result;
}
fchownFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
{
int index = 0;
- int fd = process->sim_fd(process->getSyscallArg(tc, index));
+ int tgt_fd = process->getSyscallArg(tc, index);
- if (fd < 0)
+ int sim_fd = process->getSimFD(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
/* XXX endianess */
uint32_t group = process->getSyscallArg(tc, index);
gid_t hostGroup = group;
- int result = fchown(fd, hostOwner, hostGroup);
+ int result = fchown(sim_fd, hostOwner, hostGroup);
return (result == -1) ? -errno : result;
}
dupFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
{
int index = 0;
- int fd = process->sim_fd(process->getSyscallArg(tc, index));
- if (fd < 0)
+ int tgt_fd = process->getSyscallArg(tc, index);
+
+ int sim_fd = process->getSimFD(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
- Process::FdMap *fdo = process->sim_fd_obj(fd);
+ FDEntry *fde = process->getFDEntry(tgt_fd);
- int result = dup(fd);
+ int result = dup(sim_fd);
return (result == -1) ? -errno :
- process->alloc_fd(result, fdo->filename, fdo->flags, fdo->mode, false);
+ process->allocFD(result, fde->filename, fde->flags, fde->mode, false);
}
ThreadContext *tc)
{
int index = 0;
- int fd = process->getSyscallArg(tc, index);
+ int tgt_fd = process->getSyscallArg(tc, index);
- if (fd < 0 || process->sim_fd(fd) < 0)
+ int sim_fd = process->getSimFD(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
int cmd = process->getSyscallArg(tc, index);
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);
+ warn("fcntl(%d, F_DUPFD) not supported, error returned\n", tgt_fd);
return -EMFILE;
case 1: // F_GETFD (get close-on-exec flag)
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);
+ warn("fcntl(%d, %d) passed through to host\n", tgt_fd, cmd);
+ return fcntl(sim_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);
+ warn("File lock call (fcntl(%d, %d)) ignored.\n", tgt_fd, cmd);
return 0;
default:
ThreadContext *tc)
{
int index = 0;
- int fd = process->getSyscallArg(tc, index);
+ int tgt_fd = process->getSyscallArg(tc, index);
- if (fd < 0 || process->sim_fd(fd) < 0)
+ int sim_fd = process->getSimFD(tgt_fd);
+ if (sim_fd < 0)
return -EBADF;
int cmd = process->getSyscallArg(tc, index);
switch (cmd) {
case 33: //F_GETLK64
- warn("fcntl64(%d, F_GETLK64) not supported, error returned\n", fd);
+ warn("fcntl64(%d, F_GETLK64) not supported, error returned\n", tgt_fd);
return -EMFILE;
case 34: // F_SETLK64
case 35: // F_SETLKW64
- warn("fcntl64(%d, F_SETLK(W)64) not supported, error returned\n", fd);
+ warn("fcntl64(%d, F_SETLK(W)64) not supported, error returned\n",
+ tgt_fd);
return -EMFILE;
default:
// not sure if this is totally valid, but we'll pass it through
// to the underlying OS
- warn("fcntl64(%d, %d) passed through to host\n", fd, cmd);
- return fcntl(process->sim_fd(fd), cmd);
+ warn("fcntl64(%d, %d) passed through to host\n", tgt_fd, cmd);
+ return fcntl(sim_fd, cmd);
// return 0;
}
}
return pipe_retval;
}
- sim_fds[0] = process->alloc_fd(fds[0], "PIPE-READ", O_WRONLY, -1, true);
- sim_fds[1] = process->alloc_fd(fds[1], "PIPE-WRITE", O_RDONLY, -1, true);
+ sim_fds[0] = process->allocFD(fds[0], "PIPE-READ", O_WRONLY, -1, true);
+ sim_fds[1] = process->allocFD(fds[1], "PIPE-WRITE", O_RDONLY, -1, true);
process->setReadPipeSource(sim_fds[0], sim_fds[1]);
// Alpha Linux convention for pipe() is that fd[0] is returned as
projects / gem5.git / blobdiff