#ifndef __SIM_SYSCALL_EMUL_HH__
#define __SIM_SYSCALL_EMUL_HH__
-#define BSD_HOST (defined(__APPLE__) || defined(__OpenBSD__) || \
- defined(__FreeBSD__))
+#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \
+ defined(__FreeBSD__) || defined(__CYGWIN__))
///
/// @file syscall_emul.hh
#include <errno.h>
#include <string>
#ifdef __CYGWIN32__
-#include <sys/fcntl.h> // for O_BINARY
+#include <sys/fcntl.h> // for O_BINARY
#endif
+#include <sys/stat.h>
+#include <fcntl.h>
#include <sys/uio.h>
-#include "arch/isa_traits.hh" // for Addr
#include "base/chunk_generator.hh"
-#include "base/intmath.hh" // for RoundUp
+#include "base/intmath.hh" // for RoundUp
#include "base/misc.hh"
#include "base/trace.hh"
+#include "base/types.hh"
+#include "config/the_isa.hh"
#include "cpu/base.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
#include "mem/translating_port.hh"
#include "mem/page_table.hh"
+#include "sim/system.hh"
#include "sim/process.hh"
///
/// Typedef for target syscall handler functions.
typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num,
- Process *, ExecContext *);
+ LiveProcess *, ThreadContext *);
- const char *name; //!< Syscall name (e.g., "open").
- FuncPtr funcPtr; //!< Pointer to emulation function.
- int flags; //!< Flags (see Flags enum).
+ const char *name; //!< Syscall name (e.g., "open").
+ FuncPtr funcPtr; //!< Pointer to emulation function.
+ int flags; //!< Flags (see Flags enum).
/// Flag values for controlling syscall behavior.
enum Flags {
/// Don't set return regs according to funcPtr return value.
/// Used for syscalls with non-standard return conventions
- /// that explicitly set the ExecContext regs (e.g.,
+ /// that explicitly set the ThreadContext regs (e.g.,
/// sigreturn).
SuppressReturnValue = 1
};
}
/// Emulate the syscall. Public interface for calling through funcPtr.
- void doSyscall(int callnum, Process *proc, ExecContext *xc);
+ void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc);
};
virtual bool copyIn(TranslatingPort *memport)
{
memport->readBlob(addr, bufPtr, size);
- return true; // no EFAULT detection for now
+ return true; // no EFAULT detection for now
}
//
virtual bool copyOut(TranslatingPort *memport)
{
memport->writeBlob(addr, bufPtr, size);
- return true; // no EFAULT detection for now
+ return true; // no EFAULT detection for now
}
protected:
{
public:
BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { }
- void *bufferPtr() { return bufPtr; }
+ void *bufferPtr() { return bufPtr; }
};
template <class T>
operator T*() { return (T *)bufPtr; }
// dereference operators
- T &operator*() { return *((T *)bufPtr); }
- T* operator->() { return (T *)bufPtr; }
+ T &operator*() { return *((T *)bufPtr); }
+ T* operator->() { return (T *)bufPtr; }
T &operator[](int i) { return ((T *)bufPtr)[i]; }
};
/// Handler for unimplemented syscalls that we haven't thought about.
SyscallReturn unimplementedFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Handler for unimplemented syscalls that we never intend to
/// implement (signal handling, etc.) and should not affect the correct
/// behavior of the program. Print a warning only if the appropriate
/// trace flag is enabled. Return success to the target program.
SyscallReturn ignoreFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
-/// Target exit() handler: terminate simulation.
+/// Target exit() handler: terminate current context.
SyscallReturn exitFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
+
+/// Target exit_group() handler: terminate simulation. (exit all threads)
+SyscallReturn exitGroupFunc(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
/// Target getpagesize() handler.
SyscallReturn getpagesizeFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
-/// Target obreak() handler: set brk address.
-SyscallReturn obreakFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+/// Target brk() handler: set brk address.
+SyscallReturn brkFunc(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
/// Target close() handler.
SyscallReturn closeFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target read() handler.
SyscallReturn readFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target write() handler.
SyscallReturn writeFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target lseek() handler.
SyscallReturn lseekFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
+
+/// Target _llseek() handler.
+SyscallReturn _llseekFunc(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
/// Target munmap() handler.
SyscallReturn munmapFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target gethostname() handler.
SyscallReturn gethostnameFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
+
+/// Target getcwd() handler.
+SyscallReturn getcwdFunc(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
+
+/// Target unlink() handler.
+SyscallReturn readlinkFunc(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
/// Target unlink() handler.
SyscallReturn unlinkFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
+
+/// Target mkdir() handler.
+SyscallReturn mkdirFunc(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
/// Target rename() handler.
SyscallReturn renameFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target truncate() handler.
SyscallReturn truncateFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target ftruncate() handler.
SyscallReturn ftruncateFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
+
+
+/// Target truncate64() handler.
+SyscallReturn truncate64Func(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
+
+/// Target ftruncate64() handler.
+SyscallReturn ftruncate64Func(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
+
+
+/// Target umask() handler.
+SyscallReturn umaskFunc(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
/// Target chown() handler.
SyscallReturn chownFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target fchown() handler.
SyscallReturn fchownFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
+
+/// Target dup() handler.
+SyscallReturn dupFunc(SyscallDesc *desc, int num,
+ LiveProcess *process, ThreadContext *tc);
/// Target fnctl() handler.
SyscallReturn fcntlFunc(SyscallDesc *desc, int num,
- Process *process, ExecContext *xc);
+ LiveProcess *process, ThreadContext *tc);
+
+/// Target fcntl64() handler.
+SyscallReturn fcntl64Func(SyscallDesc *desc, int num,
+ LiveProcess *process, ThreadContext *tc);
/// Target setuid() handler.
SyscallReturn setuidFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target getpid() handler.
SyscallReturn getpidFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target getuid() handler.
SyscallReturn getuidFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target getgid() handler.
SyscallReturn getgidFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target getppid() handler.
SyscallReturn getppidFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target geteuid() handler.
SyscallReturn geteuidFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target getegid() handler.
SyscallReturn getegidFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
+/// Target clone() handler.
+SyscallReturn cloneFunc(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
/// Pseudo Funcs - These functions use a different return convension,
/// returning a second value in a register other than the normal return register
SyscallReturn pipePseudoFunc(SyscallDesc *desc, int num,
- Process *process, ExecContext *xc);
+ LiveProcess *process, ThreadContext *tc);
/// Target getpidPseudo() handler.
SyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target getuidPseudo() handler.
SyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
+ LiveProcess *p, ThreadContext *tc);
/// Target getgidPseudo() handler.
SyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num,
- Process *p, ExecContext *xc);
-
-
-/// This struct is used to build an target-OS-dependent table that
-/// maps the target's open() flags to the host open() flags.
-struct OpenFlagTransTable {
- int tgtFlag; //!< Target system flag value.
- int hostFlag; //!< Corresponding host system flag value.
-};
-
+ LiveProcess *p, ThreadContext *tc);
/// A readable name for 1,000,000, for converting microseconds to seconds.
//
//////////////////////////////////////////////////////////////////////
+#if NO_STAT64
+ typedef struct stat hst_stat;
+ typedef struct stat hst_stat64;
+#else
+ typedef struct stat hst_stat;
+ typedef struct stat64 hst_stat64;
+#endif
+
+//// Helper function to convert a host stat buffer to a target stat
+//// buffer. Also copies the target buffer out to the simulated
+//// memory space. Used by stat(), fstat(), and lstat().
+
+template <typename target_stat, typename host_stat>
+static void
+convertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false)
+{
+ using namespace TheISA;
+
+ if (fakeTTY)
+ tgt->st_dev = 0xA;
+ else
+ tgt->st_dev = host->st_dev;
+ tgt->st_dev = htog(tgt->st_dev);
+ tgt->st_ino = host->st_ino;
+ tgt->st_ino = htog(tgt->st_ino);
+ tgt->st_mode = host->st_mode;
+ if (fakeTTY) {
+ // Claim to be a character device
+ tgt->st_mode &= ~S_IFMT; // Clear S_IFMT
+ tgt->st_mode |= S_IFCHR; // Set S_IFCHR
+ }
+ tgt->st_mode = htog(tgt->st_mode);
+ tgt->st_nlink = host->st_nlink;
+ tgt->st_nlink = htog(tgt->st_nlink);
+ tgt->st_uid = host->st_uid;
+ tgt->st_uid = htog(tgt->st_uid);
+ tgt->st_gid = host->st_gid;
+ tgt->st_gid = htog(tgt->st_gid);
+ if (fakeTTY)
+ tgt->st_rdev = 0x880d;
+ else
+ tgt->st_rdev = host->st_rdev;
+ tgt->st_rdev = htog(tgt->st_rdev);
+ tgt->st_size = host->st_size;
+ tgt->st_size = htog(tgt->st_size);
+ tgt->st_atimeX = host->st_atime;
+ tgt->st_atimeX = htog(tgt->st_atimeX);
+ tgt->st_mtimeX = host->st_mtime;
+ tgt->st_mtimeX = htog(tgt->st_mtimeX);
+ tgt->st_ctimeX = host->st_ctime;
+ tgt->st_ctimeX = htog(tgt->st_ctimeX);
+ // Force the block size to be 8k. This helps to ensure buffered io works
+ // consistently across different hosts.
+ tgt->st_blksize = 0x2000;
+ tgt->st_blksize = htog(tgt->st_blksize);
+ tgt->st_blocks = host->st_blocks;
+ tgt->st_blocks = htog(tgt->st_blocks);
+}
+
+// Same for stat64
+
+template <typename target_stat, typename host_stat64>
+static void
+convertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false)
+{
+ using namespace TheISA;
+
+ convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY);
+#if defined(STAT_HAVE_NSEC)
+ tgt->st_atime_nsec = host->st_atime_nsec;
+ tgt->st_atime_nsec = htog(tgt->st_atime_nsec);
+ tgt->st_mtime_nsec = host->st_mtime_nsec;
+ tgt->st_mtime_nsec = htog(tgt->st_mtime_nsec);
+ tgt->st_ctime_nsec = host->st_ctime_nsec;
+ tgt->st_ctime_nsec = htog(tgt->st_ctime_nsec);
+#else
+ tgt->st_atime_nsec = 0;
+ tgt->st_mtime_nsec = 0;
+ tgt->st_ctime_nsec = 0;
+#endif
+}
+
+//Here are a couple convenience functions
+template<class OS>
+static void
+copyOutStatBuf(TranslatingPort * mem, Addr addr,
+ hst_stat *host, bool fakeTTY = false)
+{
+ typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf;
+ tgt_stat_buf tgt(addr);
+ convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY);
+ tgt.copyOut(mem);
+}
+
+template<class OS>
+static void
+copyOutStat64Buf(TranslatingPort * mem, Addr addr,
+ hst_stat64 *host, bool fakeTTY = false)
+{
+ typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf;
+ tgt_stat_buf tgt(addr);
+ convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY);
+ tgt.copyOut(mem);
+}
+
/// 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.
template <class OS>
SyscallReturn
-ioctlFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+ioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- int fd = xc->getSyscallArg(0);
- unsigned req = xc->getSyscallArg(1);
+ int index = 0;
+ int fd = process->getSyscallArg(tc, index);
+ unsigned req = process->getSyscallArg(tc, index);
DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req);
}
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::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_:
return -ENOTTY;
default:
fatal("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ 0x%llx\n",
- fd, req, xc->readPC());
+ fd, req, tc->readPC());
}
}
/// Target open() handler.
template <class OS>
SyscallReturn
-openFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+openFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
std::string path;
- if (!xc->getMemPort()->tryReadString(path, xc->getSyscallArg(0)))
+ int index = 0;
+ if (!tc->getMemPort()->tryReadString(path,
+ process->getSyscallArg(tc, index)))
return -EFAULT;
if (path == "/dev/sysdev0") {
return -ENOENT;
}
- int tgtFlags = xc->getSyscallArg(1);
- int mode = xc->getSyscallArg(2);
+ int tgtFlags = process->getSyscallArg(tc, index);
+ int mode = process->getSyscallArg(tc, index);
int hostFlags = 0;
// translate open flags
hostFlags |= O_BINARY;
#endif
+ // Adjust path for current working directory
+ path = process->fullPath(path);
+
DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str());
- // open the file
- int fd = open(path.c_str(), hostFlags, mode);
+ 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
+ fd = OS::openSpecialFile(path, process, tc);
+ return (fd == -1) ? -1 : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
+ } 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);
+ }
- return (fd == -1) ? -errno : process->alloc_fd(fd);
}
+/// Target sysinfo() handler.
+template <class OS>
+SyscallReturn
+sysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
+{
+
+ int index = 0;
+ TypedBufferArg<typename OS::tgt_sysinfo>
+ sysinfo(process->getSyscallArg(tc, index));
+
+ sysinfo->uptime=seconds_since_epoch;
+ sysinfo->totalram=process->system->memSize();
+
+ sysinfo.copyOut(tc->getMemPort());
+
+ return 0;
+}
/// Target chmod() handler.
template <class OS>
SyscallReturn
-chmodFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+chmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
std::string path;
- if (!xc->getMemPort()->tryReadString(path, xc->getSyscallArg(0)))
+ int index = 0;
+ if (!tc->getMemPort()->tryReadString(path,
+ process->getSyscallArg(tc, index))) {
return -EFAULT;
+ }
- uint32_t mode = xc->getSyscallArg(1);
+ uint32_t mode = process->getSyscallArg(tc, index);
mode_t hostMode = 0;
// XXX translate mode flags via OS::something???
hostMode = mode;
+ // Adjust path for current working directory
+ path = process->fullPath(path);
+
// do the chmod
int result = chmod(path.c_str(), hostMode);
if (result < 0)
/// Target fchmod() handler.
template <class OS>
SyscallReturn
-fchmodFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+fchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- int fd = xc->getSyscallArg(0);
+ int index = 0;
+ int fd = process->getSyscallArg(tc, index);
if (fd < 0 || process->sim_fd(fd) < 0) {
// doesn't map to any simulator fd: not a valid target fd
return -EBADF;
}
- uint32_t mode = xc->getSyscallArg(1);
+ uint32_t mode = process->getSyscallArg(tc, index);
mode_t hostMode = 0;
// XXX translate mode flags via OS::someting???
return 0;
}
+/// Target mremap() handler.
+template <class OS>
+SyscallReturn
+mremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc)
+{
+ int index = 0;
+ Addr start = process->getSyscallArg(tc, index);
+ uint64_t old_length = process->getSyscallArg(tc, index);
+ uint64_t new_length = process->getSyscallArg(tc, index);
+ uint64_t flags = process->getSyscallArg(tc, index);
+
+ if ((start % TheISA::VMPageSize != 0) ||
+ (new_length % TheISA::VMPageSize != 0)) {
+ warn("mremap failing: arguments not page aligned");
+ return -EINVAL;
+ }
+
+ if (new_length > old_length) {
+ if ((start + old_length) == process->mmap_end) {
+ uint64_t diff = new_length - old_length;
+ process->pTable->allocate(process->mmap_end, diff);
+ process->mmap_end += diff;
+ return start;
+ } else {
+ // sys/mman.h defined MREMAP_MAYMOVE
+ if (!(flags & 1)) {
+ warn("can't remap here and MREMAP_MAYMOVE flag not set\n");
+ return -ENOMEM;
+ } else {
+ process->pTable->remap(start, old_length, process->mmap_end);
+ warn("mremapping to totally new vaddr %08p-%08p, adding %d\n",
+ process->mmap_end, process->mmap_end + new_length, new_length);
+ start = process->mmap_end;
+ // add on the remaining unallocated pages
+ process->pTable->allocate(start + old_length, new_length - old_length);
+ process->mmap_end += new_length;
+ warn("returning %08p as start\n", start);
+ return start;
+ }
+ }
+ } else {
+ process->pTable->deallocate(start + new_length, old_length -
+ new_length);
+ return start;
+ }
+}
/// Target stat() handler.
template <class OS>
SyscallReturn
-statFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+statFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
std::string path;
- if (!xc->getMemPort()->tryReadString(path, xc->getSyscallArg(0)))
- return -EFAULT;
+ int index = 0;
+ if (!tc->getMemPort()->tryReadString(path,
+ process->getSyscallArg(tc, index))) {
+ return -EFAULT;
+ }
+ Addr bufPtr = process->getSyscallArg(tc, index);
+
+ // Adjust path for current working directory
+ path = process->fullPath(path);
struct stat hostBuf;
int result = stat(path.c_str(), &hostBuf);
if (result < 0)
return -errno;
- OS::copyOutStatBuf(xc->getMemPort(), xc->getSyscallArg(1), &hostBuf);
+ copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
+
+ return 0;
+}
+
+
+/// Target stat64() handler.
+template <class OS>
+SyscallReturn
+stat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
+{
+ std::string path;
+
+ int index = 0;
+ if (!tc->getMemPort()->tryReadString(path,
+ process->getSyscallArg(tc, index)))
+ return -EFAULT;
+ Addr bufPtr = process->getSyscallArg(tc, index);
+
+ // Adjust path for current working directory
+ path = process->fullPath(path);
+
+#if NO_STAT64
+ struct stat hostBuf;
+ int result = stat(path.c_str(), &hostBuf);
+#else
+ struct stat64 hostBuf;
+ int result = stat64(path.c_str(), &hostBuf);
+#endif
+
+ if (result < 0)
+ return -errno;
+
+ copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
return 0;
}
/// Target fstat64() handler.
template <class OS>
SyscallReturn
-fstat64Func(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+fstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- int fd = xc->getSyscallArg(0);
+ int index = 0;
+ int fd = process->getSyscallArg(tc, index);
+ Addr bufPtr = process->getSyscallArg(tc, index);
if (fd < 0 || process->sim_fd(fd) < 0) {
// doesn't map to any simulator fd: not a valid target fd
return -EBADF;
}
-#if BSD_HOST
+#if NO_STAT64
struct stat hostBuf;
int result = fstat(process->sim_fd(fd), &hostBuf);
#else
if (result < 0)
return -errno;
- OS::copyOutStat64Buf(xc->getMemPort(), fd, xc->getSyscallArg(1), &hostBuf);
+ copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1));
return 0;
}
/// Target lstat() handler.
template <class OS>
SyscallReturn
-lstatFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+lstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
std::string path;
- if (!xc->getMemPort()->tryReadString(path, xc->getSyscallArg(0)))
- return -EFAULT;
+ int index = 0;
+ if (!tc->getMemPort()->tryReadString(path,
+ process->getSyscallArg(tc, index))) {
+ return -EFAULT;
+ }
+ Addr bufPtr = process->getSyscallArg(tc, index);
+
+ // Adjust path for current working directory
+ path = process->fullPath(path);
struct stat hostBuf;
int result = lstat(path.c_str(), &hostBuf);
if (result < 0)
return -errno;
- OS::copyOutStatBuf(xc->getMemPort(), xc->getSyscallArg(1), &hostBuf);
+ copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
return 0;
}
/// Target lstat64() handler.
template <class OS>
SyscallReturn
-lstat64Func(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+lstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
std::string path;
- if (!xc->getMemPort()->tryReadString(path, xc->getSyscallArg(0)))
- return -EFAULT;
+ int index = 0;
+ if (!tc->getMemPort()->tryReadString(path,
+ process->getSyscallArg(tc, index))) {
+ return -EFAULT;
+ }
+ Addr bufPtr = process->getSyscallArg(tc, index);
+
+ // Adjust path for current working directory
+ path = process->fullPath(path);
-#if BSD_HOST
+#if NO_STAT64
struct stat hostBuf;
int result = lstat(path.c_str(), &hostBuf);
#else
if (result < 0)
return -errno;
- OS::copyOutStat64Buf(xc->getMemPort(), -1, xc->getSyscallArg(1), &hostBuf);
+ copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
return 0;
}
/// Target fstat() handler.
template <class OS>
SyscallReturn
-fstatFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- int fd = process->sim_fd(xc->getSyscallArg(0));
+ int index = 0;
+ int fd = process->sim_fd(process->getSyscallArg(tc, index));
+ Addr bufPtr = process->getSyscallArg(tc, index);
DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd);
if (result < 0)
return -errno;
- OS::copyOutStatBuf(xc->getMemPort(), xc->getSyscallArg(1), &hostBuf);
+ copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1));
return 0;
}
/// Target statfs() handler.
template <class OS>
SyscallReturn
-statfsFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
std::string path;
- if (!xc->getMemPort()->tryReadString(path, xc->getSyscallArg(0)))
- return -EFAULT;
+ int index = 0;
+ if (!tc->getMemPort()->tryReadString(path,
+ process->getSyscallArg(tc, index))) {
+ return -EFAULT;
+ }
+ Addr bufPtr = process->getSyscallArg(tc, index);
+
+ // Adjust path for current working directory
+ path = process->fullPath(path);
struct statfs hostBuf;
int result = statfs(path.c_str(), &hostBuf);
if (result < 0)
return -errno;
- OS::copyOutStatfsBuf(xc->getMemPort(), xc->getSyscallArg(1), &hostBuf);
+ OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf);
return 0;
}
/// Target fstatfs() handler.
template <class OS>
SyscallReturn
-fstatfsFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- int fd = process->sim_fd(xc->getSyscallArg(0));
+ int index = 0;
+ int fd = process->sim_fd(process->getSyscallArg(tc, index));
+ Addr bufPtr = process->getSyscallArg(tc, index);
if (fd < 0)
return -EBADF;
if (result < 0)
return -errno;
- OS::copyOutStatfsBuf(xc->getMemPort(), xc->getSyscallArg(1), &hostBuf);
+ OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf);
return 0;
}
/// Target writev() handler.
template <class OS>
SyscallReturn
-writevFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- int fd = xc->getSyscallArg(0);
+ int index = 0;
+ int fd = process->getSyscallArg(tc, index);
if (fd < 0 || process->sim_fd(fd) < 0) {
// doesn't map to any simulator fd: not a valid target fd
return -EBADF;
}
- TranslatingPort *p = xc->getMemPort();
- uint64_t tiov_base = xc->getSyscallArg(1);
- size_t count = xc->getSyscallArg(2);
+ TranslatingPort *p = tc->getMemPort();
+ uint64_t tiov_base = process->getSyscallArg(tc, index);
+ size_t count = process->getSyscallArg(tc, index);
struct iovec hiov[count];
- for (int i = 0; i < count; ++i)
- {
+ for (size_t i = 0; i < count; ++i) {
typename OS::tgt_iovec tiov;
p->readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec),
int result = writev(process->sim_fd(fd), hiov, count);
- for (int i = 0; i < count; ++i)
- {
+ for (size_t i = 0; i < count; ++i)
delete [] (char *)hiov[i].iov_base;
- }
if (result < 0)
return -errno;
/// anything else.
template <class OS>
SyscallReturn
-mmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+mmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
- Addr start = xc->getSyscallArg(0);
- uint64_t length = xc->getSyscallArg(1);
- // int prot = xc->getSyscallArg(2);
- int flags = xc->getSyscallArg(3);
- // int fd = p->sim_fd(xc->getSyscallArg(4));
- // int offset = xc->getSyscallArg(5);
+ int index = 0;
+ Addr start = p->getSyscallArg(tc, index);
+ uint64_t length = p->getSyscallArg(tc, index);
+ index++; // int prot = p->getSyscallArg(tc, index);
+ int flags = p->getSyscallArg(tc, index);
+ int fd = p->sim_fd(p->getSyscallArg(tc, index));
+ // int offset = p->getSyscallArg(tc, index);
+
if ((start % TheISA::VMPageSize) != 0 ||
(length % TheISA::VMPageSize) != 0) {
}
// pick next address from our "mmap region"
- start = p->mmap_end;
+ if (OS::mmapGrowsDown()) {
+ start = p->mmap_end - length;
+ p->mmap_end = start;
+ } else {
+ start = p->mmap_end;
+ p->mmap_end += length;
+ }
p->pTable->allocate(start, length);
- p->mmap_end += length;
if (!(flags & OS::TGT_MAP_ANONYMOUS)) {
warn("allowing mmap of file @ fd %d. "
- "This will break if not /dev/zero.", xc->getSyscallArg(4));
+ "This will break if not /dev/zero.", fd);
}
return start;
/// Target getrlimit() handler.
template <class OS>
SyscallReturn
-getrlimitFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+getrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- unsigned resource = xc->getSyscallArg(0);
- TypedBufferArg<typename OS::rlimit> rlp(xc->getSyscallArg(1));
+ int index = 0;
+ unsigned resource = process->getSyscallArg(tc, index);
+ TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index));
switch (resource) {
case OS::TGT_RLIMIT_STACK:
- // max stack size in bytes: make up a number (2MB for now)
+ // max stack size in bytes: make up a number (8MB for now)
rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024;
rlp->rlim_cur = htog(rlp->rlim_cur);
rlp->rlim_max = htog(rlp->rlim_max);
break;
+ case OS::TGT_RLIMIT_DATA:
+ // max data segment size in bytes: make up a number
+ rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024;
+ rlp->rlim_cur = htog(rlp->rlim_cur);
+ rlp->rlim_max = htog(rlp->rlim_max);
+ break;
+
default:
std::cerr << "getrlimitFunc: unimplemented resource " << resource
<< std::endl;
break;
}
- rlp.copyOut(xc->getMemPort());
+ rlp.copyOut(tc->getMemPort());
return 0;
}
/// Target gettimeofday() handler.
template <class OS>
SyscallReturn
-gettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- TypedBufferArg<typename OS::timeval> tp(xc->getSyscallArg(0));
+ int index = 0;
+ TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index));
getElapsedTime(tp->tv_sec, tp->tv_usec);
tp->tv_sec += seconds_since_epoch;
- tp->tv_sec = htog(tp->tv_sec);
- tp->tv_usec = htog(tp->tv_usec);
+ tp->tv_sec = TheISA::htog(tp->tv_sec);
+ tp->tv_usec = TheISA::htog(tp->tv_usec);
- tp.copyOut(xc->getMemPort());
+ tp.copyOut(tc->getMemPort());
return 0;
}
/// Target utimes() handler.
template <class OS>
SyscallReturn
-utimesFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+utimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
std::string path;
- if (!xc->getMemPort()->tryReadString(path, xc->getSyscallArg(0)))
- return -EFAULT;
+ int index = 0;
+ if (!tc->getMemPort()->tryReadString(path,
+ process->getSyscallArg(tc, index))) {
+ return -EFAULT;
+ }
- TypedBufferArg<typename OS::timeval [2]> tp(xc->getSyscallArg(1));
- tp.copyIn(xc->getMemPort());
+ TypedBufferArg<typename OS::timeval [2]>
+ tp(process->getSyscallArg(tc, index));
+ tp.copyIn(tc->getMemPort());
struct timeval hostTimeval[2];
for (int i = 0; i < 2; ++i)
hostTimeval[i].tv_sec = gtoh((*tp)[i].tv_sec);
hostTimeval[i].tv_usec = gtoh((*tp)[i].tv_usec);
}
+
+ // Adjust path for current working directory
+ path = process->fullPath(path);
+
int result = utimes(path.c_str(), hostTimeval);
if (result < 0)
/// Target getrusage() function.
template <class OS>
SyscallReturn
-getrusageFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- int who = xc->getSyscallArg(0); // THREAD, SELF, or CHILDREN
- TypedBufferArg<typename OS::rusage> rup(xc->getSyscallArg(1));
-
- if (who != OS::TGT_RUSAGE_SELF) {
- // don't really handle THREAD or CHILDREN, but just warn and
- // plow ahead
- warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
- who);
- }
-
- getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
- rup->ru_utime.tv_sec = htog(rup->ru_utime.tv_sec);
- rup->ru_utime.tv_usec = htog(rup->ru_utime.tv_usec);
+ int index = 0;
+ int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN
+ TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index));
+ rup->ru_utime.tv_sec = 0;
+ rup->ru_utime.tv_usec = 0;
rup->ru_stime.tv_sec = 0;
rup->ru_stime.tv_usec = 0;
rup->ru_maxrss = 0;
rup->ru_nvcsw = 0;
rup->ru_nivcsw = 0;
- rup.copyOut(xc->getMemPort());
+ switch (who) {
+ case OS::TGT_RUSAGE_SELF:
+ getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
+ rup->ru_utime.tv_sec = htog(rup->ru_utime.tv_sec);
+ rup->ru_utime.tv_usec = htog(rup->ru_utime.tv_usec);
+ break;
+
+ case OS::TGT_RUSAGE_CHILDREN:
+ // do nothing. We have no child processes, so they take no time.
+ break;
+
+ default:
+ // don't really handle THREAD or CHILDREN, but just warn and
+ // plow ahead
+ warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
+ who);
+ }
+
+ rup.copyOut(tc->getMemPort());
return 0;
}
+/// Target times() function.
+template <class OS>
+SyscallReturn
+timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
+{
+ int index = 0;
+ TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index));
+
+ // Fill in the time structure (in clocks)
+ int64_t clocks = curTick * OS::_SC_CLK_TCK / Clock::Int::s;
+ bufp->tms_utime = clocks;
+ bufp->tms_stime = 0;
+ bufp->tms_cutime = 0;
+ bufp->tms_cstime = 0;
+
+ // Convert to host endianness
+ bufp->tms_utime = htog(bufp->tms_utime);
+ // Write back
+ bufp.copyOut(tc->getMemPort());
+
+ // Return clock ticks since system boot
+ return clocks;
+}
+
+/// Target time() function.
+template <class OS>
+SyscallReturn
+timeFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
+{
+ typename OS::time_t sec, usec;
+ getElapsedTime(sec, usec);
+ sec += seconds_since_epoch;
+
+ int index = 0;
+ Addr taddr = (Addr)process->getSyscallArg(tc, index);
+ if(taddr != 0) {
+ typename OS::time_t t = sec;
+ t = htog(t);
+ TranslatingPort *p = tc->getMemPort();
+ p->writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
+ }
+ return sec;
+}
#endif // __SIM_SYSCALL_EMUL_HH__
projects / gem5.git / blobdiff