#include "sim/syscall_emul.hh"
#include "base/chunk_generator.hh"
#include "base/trace.hh"
-#include "cpu/exec_context.hh"
+#include "cpu/thread_context.hh"
#include "cpu/base.hh"
#include "mem/page_table.hh"
#include "sim/process.hh"
-#include "sim/sim_events.hh"
+#include "sim/sim_exit.hh"
using namespace std;
using namespace TheISA;
void
-SyscallDesc::doSyscall(int callnum, Process *process, ExecContext *xc)
+SyscallDesc::doSyscall(int callnum, LiveProcess *process, ThreadContext *tc)
{
DPRINTFR(SyscallVerbose, "%d: %s: syscall %s called w/arguments %d,%d,%d,%d\n",
- curTick,xc->getCpuPtr()->name(), name,
- xc->getSyscallArg(0),xc->getSyscallArg(1),
- xc->getSyscallArg(2),xc->getSyscallArg(3));
+ curTick,tc->getCpuPtr()->name(), name,
+ tc->getSyscallArg(0),tc->getSyscallArg(1),
+ tc->getSyscallArg(2),tc->getSyscallArg(3));
- SyscallReturn retval = (*funcPtr)(this, callnum, process, xc);
+ SyscallReturn retval = (*funcPtr)(this, callnum, process, tc);
DPRINTFR(SyscallVerbose, "%d: %s: syscall %s returns %d\n",
- curTick,xc->getCpuPtr()->name(), name, retval.value());
+ curTick,tc->getCpuPtr()->name(), name, retval.value());
if (!(flags & SyscallDesc::SuppressReturnValue))
- xc->setSyscallReturn(retval);
+ tc->setSyscallReturn(retval);
}
SyscallReturn
-unimplementedFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+unimplementedFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
fatal("syscall %s (#%d) unimplemented.", desc->name, callnum);
SyscallReturn
-ignoreFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+ignoreFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
warn("ignoring syscall %s(%d, %d, ...)", desc->name,
- xc->getSyscallArg(0), xc->getSyscallArg(1));
+ tc->getSyscallArg(0), tc->getSyscallArg(1));
return 0;
}
SyscallReturn
-exitFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+exitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- new SimExitEvent("target called exit()", xc->getSyscallArg(0) & 0xff);
+ if (tc->exit()) {
+ exitSimLoop("target called exit()", tc->getSyscallArg(0) & 0xff);
+ }
return 1;
}
SyscallReturn
-getpagesizeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+getpagesizeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
return (int)VMPageSize;
}
SyscallReturn
-obreakFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+obreakFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
Addr junk;
// change brk addr to first arg
- Addr new_brk = xc->getSyscallArg(0);
+ Addr new_brk = tc->getSyscallArg(0);
if (new_brk != 0) {
for (ChunkGenerator gen(p->brk_point, new_brk - p->brk_point,
VMPageSize); !gen.done(); gen.next()) {
SyscallReturn
-closeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+closeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
- int target_fd = xc->getSyscallArg(0);
+ int target_fd = tc->getSyscallArg(0);
int status = close(p->sim_fd(target_fd));
if (status >= 0)
p->free_fd(target_fd);
SyscallReturn
-readFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+readFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
- int fd = p->sim_fd(xc->getSyscallArg(0));
- int nbytes = xc->getSyscallArg(2);
- BufferArg bufArg(xc->getSyscallArg(1), nbytes);
+ int fd = p->sim_fd(tc->getSyscallArg(0));
+ int nbytes = tc->getSyscallArg(2);
+ BufferArg bufArg(tc->getSyscallArg(1), nbytes);
int bytes_read = read(fd, bufArg.bufferPtr(), nbytes);
if (bytes_read != -1)
- bufArg.copyOut(xc->getMemPort());
+ bufArg.copyOut(tc->getMemPort());
return bytes_read;
}
SyscallReturn
-writeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+writeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
- int fd = p->sim_fd(xc->getSyscallArg(0));
- int nbytes = xc->getSyscallArg(2);
- BufferArg bufArg(xc->getSyscallArg(1), nbytes);
+ int fd = p->sim_fd(tc->getSyscallArg(0));
+ int nbytes = tc->getSyscallArg(2);
+ BufferArg bufArg(tc->getSyscallArg(1), nbytes);
- bufArg.copyIn(xc->getMemPort());
+ bufArg.copyIn(tc->getMemPort());
int bytes_written = write(fd, bufArg.bufferPtr(), nbytes);
SyscallReturn
-lseekFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+lseekFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
- int fd = p->sim_fd(xc->getSyscallArg(0));
- uint64_t offs = xc->getSyscallArg(1);
- int whence = xc->getSyscallArg(2);
+ int fd = p->sim_fd(tc->getSyscallArg(0));
+ uint64_t offs = tc->getSyscallArg(1);
+ int whence = tc->getSyscallArg(2);
off_t result = lseek(fd, offs, whence);
SyscallReturn
-munmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+munmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
// 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)
+gethostnameFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
- int name_len = xc->getSyscallArg(1);
- BufferArg name(xc->getSyscallArg(0), name_len);
+ int name_len = tc->getSyscallArg(1);
+ BufferArg name(tc->getSyscallArg(0), name_len);
strncpy((char *)name.bufferPtr(), hostname, name_len);
- name.copyOut(xc->getMemPort());
+ name.copyOut(tc->getMemPort());
return 0;
}
SyscallReturn
-unlinkFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+unlinkFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
string path;
- if (!xc->getMemPort()->tryReadString(path, xc->getSyscallArg(0)))
+ if (!tc->getMemPort()->tryReadString(path, tc->getSyscallArg(0)))
return (TheISA::IntReg)-EFAULT;
int result = unlink(path.c_str());
}
SyscallReturn
-renameFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+renameFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
string old_name;
- if (!xc->getMemPort()->tryReadString(old_name, xc->getSyscallArg(0)))
+ if (!tc->getMemPort()->tryReadString(old_name, tc->getSyscallArg(0)))
return -EFAULT;
string new_name;
- if (!xc->getMemPort()->tryReadString(new_name, xc->getSyscallArg(1)))
+ if (!tc->getMemPort()->tryReadString(new_name, tc->getSyscallArg(1)))
return -EFAULT;
int64_t result = rename(old_name.c_str(), new_name.c_str());
}
SyscallReturn
-truncateFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+truncateFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
string path;
- if (!xc->getMemPort()->tryReadString(path, xc->getSyscallArg(0)))
+ if (!tc->getMemPort()->tryReadString(path, tc->getSyscallArg(0)))
return -EFAULT;
- off_t length = xc->getSyscallArg(1);
+ off_t length = tc->getSyscallArg(1);
int result = truncate(path.c_str(), length);
return (result == -1) ? -errno : result;
}
SyscallReturn
-ftruncateFunc(SyscallDesc *desc, int num, Process *process, ExecContext *xc)
+ftruncateFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
{
- int fd = process->sim_fd(xc->getSyscallArg(0));
+ int fd = process->sim_fd(tc->getSyscallArg(0));
if (fd < 0)
return -EBADF;
- off_t length = xc->getSyscallArg(1);
+ off_t length = tc->getSyscallArg(1);
int result = ftruncate(fd, length);
return (result == -1) ? -errno : result;
}
SyscallReturn
-chownFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
+chownFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
string path;
- if (!xc->getMemPort()->tryReadString(path, xc->getSyscallArg(0)))
+ if (!tc->getMemPort()->tryReadString(path, tc->getSyscallArg(0)))
return -EFAULT;
/* XXX endianess */
- uint32_t owner = xc->getSyscallArg(1);
+ uint32_t owner = tc->getSyscallArg(1);
uid_t hostOwner = owner;
- uint32_t group = xc->getSyscallArg(2);
+ uint32_t group = tc->getSyscallArg(2);
gid_t hostGroup = group;
int result = chown(path.c_str(), hostOwner, hostGroup);
}
SyscallReturn
-fchownFunc(SyscallDesc *desc, int num, Process *process, ExecContext *xc)
+fchownFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
{
- int fd = process->sim_fd(xc->getSyscallArg(0));
+ int fd = process->sim_fd(tc->getSyscallArg(0));
if (fd < 0)
return -EBADF;
/* XXX endianess */
- uint32_t owner = xc->getSyscallArg(1);
+ uint32_t owner = tc->getSyscallArg(1);
uid_t hostOwner = owner;
- uint32_t group = xc->getSyscallArg(2);
+ uint32_t group = tc->getSyscallArg(2);
gid_t hostGroup = group;
int result = fchown(fd, hostOwner, hostGroup);
SyscallReturn
-fcntlFunc(SyscallDesc *desc, int num, Process *process,
- ExecContext *xc)
+dupFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
{
- int fd = xc->getSyscallArg(0);
+ int fd = process->sim_fd(tc->getSyscallArg(0));
+
+ if (fd < 0)
+ return -EBADF;
+
+ int result = dup(fd);
+ return (result == -1) ? -errno : process->alloc_fd(result);
+}
+
+
+SyscallReturn
+fcntlFunc(SyscallDesc *desc, int num, LiveProcess *process,
+ ThreadContext *tc)
+{
+ int fd = tc->getSyscallArg(0);
if (fd < 0 || process->sim_fd(fd) < 0)
return -EBADF;
- int cmd = xc->getSyscallArg(1);
+ int cmd = tc->getSyscallArg(1);
switch (cmd) {
case 0: // F_DUPFD
// if we really wanted to support this, we'd need to do it
}
SyscallReturn
-pipePseudoFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+fcntl64Func(SyscallDesc *desc, int num, LiveProcess *process,
+ ThreadContext *tc)
+{
+ int fd = tc->getSyscallArg(0);
+
+ if (fd < 0 || process->sim_fd(fd) < 0)
+ return -EBADF;
+
+ int cmd = tc->getSyscallArg(1);
+ switch (cmd) {
+ case 33: //F_GETLK64
+ warn("fcntl64(%d, F_GETLK64) not supported, error returned\n", fd);
+ return -EMFILE;
+
+ case 34: // F_SETLK64
+ case 35: // F_SETLKW64
+ warn("fcntl64(%d, F_SETLK(W)64) not supported, error returned\n", 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);
+ // return 0;
+ }
+}
+
+SyscallReturn
+pipePseudoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
int fds[2], sim_fds[2];
int pipe_retval = pipe(fds);
// 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]);
+ tc->setIntReg(SyscallPseudoReturnReg, sim_fds[1]);
return sim_fds[0];
}
SyscallReturn
-getpidPseudoFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+getpidPseudoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
// 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;
+ tc->setIntReg(SyscallPseudoReturnReg, process->ppid());
+ return process->pid();
}
SyscallReturn
-getuidPseudoFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+getuidPseudoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
// 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
+ tc->setIntReg(SyscallPseudoReturnReg, process->euid()); //EUID
+ return process->uid(); // UID
}
SyscallReturn
-getgidPseudoFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+getgidPseudoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
// Get current group ID. EGID goes in r20.
- xc->setIntReg(SyscallPseudoReturnReg, 100); //EGID
- return 100;
+ tc->setIntReg(SyscallPseudoReturnReg, process->egid()); //EGID
+ return process->gid();
}
SyscallReturn
-setuidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+setuidFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
// can't fathom why a benchmark would call this.
- warn("Ignoring call to setuid(%d)\n", xc->getSyscallArg(0));
+ warn("Ignoring call to setuid(%d)\n", tc->getSyscallArg(0));
return 0;
}
SyscallReturn
-getpidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+getpidFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
// 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;
+ tc->setIntReg(SyscallPseudoReturnReg, process->ppid()); //PID
+ return process->pid();
}
SyscallReturn
-getppidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+getppidFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- return 99;
+ return process->ppid();
}
SyscallReturn
-getuidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+getuidFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- return 100; // UID
+ return process->uid(); // UID
}
SyscallReturn
-geteuidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+geteuidFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- return 100; // UID
+ return process->euid(); // UID
}
SyscallReturn
-getgidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+getgidFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- return 100;
+ return process->gid();
}
SyscallReturn
-getegidFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
+getegidFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
{
- return 100;
+ return process->egid();
}
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