#define __SIM_SYSCALL_EMUL_HH__
#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \
- defined(__FreeBSD__) || defined(__CYGWIN__))
+ defined(__FreeBSD__) || defined(__CYGWIN__) || \
+ defined(__NetBSD__))
///
/// @file syscall_emul.hh
//
// copy data into simulator space (read from target memory)
//
- virtual bool copyIn(SETranslatingPortProxy* memproxy)
+ virtual bool copyIn(SETranslatingPortProxy &memproxy)
{
- memproxy->readBlob(addr, bufPtr, size);
+ memproxy.readBlob(addr, bufPtr, size);
return true; // no EFAULT detection for now
}
//
// copy data out of simulator space (write to target memory)
//
- virtual bool copyOut(SETranslatingPortProxy* memproxy)
+ virtual bool copyOut(SETranslatingPortProxy &memproxy)
{
- memproxy->writeBlob(addr, bufPtr, size);
+ memproxy.writeBlob(addr, bufPtr, size);
return true; // no EFAULT detection for now
}
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
+template <class OS>
+SyscallReturn
+futexFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
+{
+ int index_uaddr = 0;
+ int index_op = 1;
+ int index_val = 2;
+ int index_timeout = 3;
+
+ uint64_t uaddr = process->getSyscallArg(tc, index_uaddr);
+ int op = process->getSyscallArg(tc, index_op);
+ int val = process->getSyscallArg(tc, index_val);
+ uint64_t timeout = process->getSyscallArg(tc, index_timeout);
+
+ std::map<uint64_t, std::list<ThreadContext *> * >
+ &futex_map = tc->getSystemPtr()->futexMap;
+
+ DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n",
+ uaddr, op, val);
+
+ op &= ~OS::TGT_FUTEX_PRIVATE_FLAG;
+
+ if (op == OS::TGT_FUTEX_WAIT) {
+ if (timeout != 0) {
+ warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;"
+ "we'll wait indefinitely");
+ }
+
+ uint8_t *buf = new uint8_t[sizeof(int)];
+ tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int));
+ int mem_val = *((int *)buf);
+ delete buf;
+
+ if(val != mem_val) {
+ DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, "
+ "expected: %d\n", mem_val, val);
+ return -OS::TGT_EWOULDBLOCK;
+ }
+
+ // Queue the thread context
+ std::list<ThreadContext *> * tcWaitList;
+ if (futex_map.count(uaddr)) {
+ tcWaitList = futex_map.find(uaddr)->second;
+ } else {
+ tcWaitList = new std::list<ThreadContext *>();
+ futex_map.insert(std::pair< uint64_t,
+ std::list<ThreadContext *> * >(uaddr, tcWaitList));
+ }
+ tcWaitList->push_back(tc);
+ DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling "
+ "thread context\n");
+ tc->suspend();
+ return 0;
+ } else if (op == OS::TGT_FUTEX_WAKE){
+ int wokenUp = 0;
+ std::list<ThreadContext *> * tcWaitList;
+ if (futex_map.count(uaddr)) {
+ tcWaitList = futex_map.find(uaddr)->second;
+ while (tcWaitList->size() > 0 && wokenUp < val) {
+ tcWaitList->front()->activate();
+ tcWaitList->pop_front();
+ wokenUp++;
+ }
+ if(tcWaitList->empty()) {
+ futex_map.erase(uaddr);
+ delete tcWaitList;
+ }
+ }
+ DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting "
+ "thread contexts\n", wokenUp);
+ return wokenUp;
+ } else {
+ warn("sys_futex: op %d is not implemented, just returning...", op);
+ return 0;
+ }
+
+}
+
/// Pseudo Funcs - These functions use a different return convension,
/// returning a second value in a register other than the normal return register
//Here are a couple convenience functions
template<class OS>
static void
-copyOutStatBuf(SETranslatingPortProxy* mem, Addr addr,
+copyOutStatBuf(SETranslatingPortProxy &mem, Addr addr,
hst_stat *host, bool fakeTTY = false)
{
typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf;
template<class OS>
static void
-copyOutStat64Buf(SETranslatingPortProxy* mem, Addr addr,
+copyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr,
hst_stat64 *host, bool fakeTTY = false)
{
typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf;
/// Target ioctl() handler. For the most part, programs call ioctl()
/// only to find out if their stdout is a tty, to determine whether to
-/// do line or block buffering.
+/// do line or block buffering. We always claim that output fds are
+/// not TTYs to provide repeatable results.
template <class OS>
SyscallReturn
ioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
return -EBADF;
}
- switch (req) {
- case OS::TIOCISATTY_:
- case OS::TIOCGETP_:
- case OS::TIOCSETP_:
- case OS::TIOCSETN_:
- case OS::TIOCSETC_:
- case OS::TIOCGETC_:
- case OS::TIOCGETS_:
- case OS::TIOCGETA_:
- case OS::TCSETAW_:
+ if (OS::isTtyReq(req)) {
return -ENOTTY;
-
- default:
- fatal("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n",
- fd, req, tc->pcState());
}
+
+ warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n",
+ fd, req, tc->pcState());
+ return -ENOTTY;
}
/// Target open() handler.
std::string path;
int index = 0;
- if (!tc->getMemProxy()->tryReadString(path,
+ if (!tc->getMemProxy().tryReadString(path,
process->getSyscallArg(tc, index)))
return -EFAULT;
DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str());
int fd;
- if (!path.compare(0, 6, "/proc/") || !path.compare(0, 8, "/system/") ||
- !path.compare(0, 10, "/platform/") || !path.compare(0, 5, "/sys/")) {
- // It's a proc/sys entery and requires special handling
+ int local_errno;
+ if (startswith(path, "/proc/") || startswith(path, "/system/") ||
+ startswith(path, "/platform/") || startswith(path, "/sys/")) {
+ // It's a proc/sys entry and requires special handling
fd = OS::openSpecialFile(path, process, tc);
- return (fd == -1) ? -1 : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
+ local_errno = ENOENT;
} else {
// open the file
fd = open(path.c_str(), hostFlags, mode);
- return (fd == -1) ? -errno : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
+ local_errno = errno;
}
+ if (fd == -1)
+ return -local_errno;
+
+ return process->alloc_fd(fd, path.c_str(), hostFlags, mode, false);
}
/// Target sysinfo() handler.
std::string path;
int index = 0;
- if (!tc->getMemProxy()->tryReadString(path,
+ if (!tc->getMemProxy().tryReadString(path,
process->getSyscallArg(tc, index))) {
return -EFAULT;
}
std::string path;
int index = 0;
- if (!tc->getMemProxy()->tryReadString(path,
+ if (!tc->getMemProxy().tryReadString(path,
process->getSyscallArg(tc, index))) {
return -EFAULT;
}
std::string path;
int index = 0;
- if (!tc->getMemProxy()->tryReadString(path,
+ if (!tc->getMemProxy().tryReadString(path,
process->getSyscallArg(tc, index)))
return -EFAULT;
Addr bufPtr = process->getSyscallArg(tc, index);
std::string path;
int index = 0;
- if (!tc->getMemProxy()->tryReadString(path,
+ if (!tc->getMemProxy().tryReadString(path,
process->getSyscallArg(tc, index))) {
return -EFAULT;
}
std::string path;
int index = 0;
- if (!tc->getMemProxy()->tryReadString(path,
+ if (!tc->getMemProxy().tryReadString(path,
process->getSyscallArg(tc, index))) {
return -EFAULT;
}
std::string path;
int index = 0;
- if (!tc->getMemProxy()->tryReadString(path,
+ if (!tc->getMemProxy().tryReadString(path,
process->getSyscallArg(tc, index))) {
return -EFAULT;
}
return -EBADF;
}
- SETranslatingPortProxy *p = tc->getMemProxy();
+ SETranslatingPortProxy &p = tc->getMemProxy();
uint64_t tiov_base = process->getSyscallArg(tc, index);
size_t count = process->getSyscallArg(tc, index);
struct iovec hiov[count];
for (size_t i = 0; i < count; ++i) {
typename OS::tgt_iovec tiov;
- p->readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec),
- (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec));
+ p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec),
+ (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec));
hiov[i].iov_len = TheISA::gtoh(tiov.iov_len);
hiov[i].iov_base = new char [hiov[i].iov_len];
- p->readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
- hiov[i].iov_len);
+ p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
+ hiov[i].iov_len);
}
int result = writev(process->sim_fd(fd), hiov, count);
int tgt_fd = p->getSyscallArg(tc, index);
// int offset = p->getSyscallArg(tc, index);
+ if (length > 0x100000000ULL)
+ warn("mmap length argument %#x is unreasonably large.\n", length);
+
if (!(flags & OS::TGT_MAP_ANONYMOUS)) {
Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd);
if (!fd_map || fd_map->fd < 0) {
std::string path;
int index = 0;
- if (!tc->getMemProxy()->tryReadString(path,
+ if (!tc->getMemProxy().tryReadString(path,
process->getSyscallArg(tc, index))) {
return -EFAULT;
}
if(taddr != 0) {
typename OS::time_t t = sec;
t = TheISA::htog(t);
- SETranslatingPortProxy *p = tc->getMemProxy();
- p->writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
+ SETranslatingPortProxy &p = tc->getMemProxy();
+ p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
}
return sec;
}
projects / gem5.git / blobdiff