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-rw-r--r--arch/alpha/alpha_linux_process.cc584
1 files changed, 84 insertions, 500 deletions
diff --git a/arch/alpha/alpha_linux_process.cc b/arch/alpha/alpha_linux_process.cc
index af4df7c30..783b189cc 100644
--- a/arch/alpha/alpha_linux_process.cc
+++ b/arch/alpha/alpha_linux_process.cc
@@ -26,507 +26,97 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h> // for host open() flags
-#include <string.h> // for memset()
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
+#include "arch/alpha/alpha_common_syscall_emul.hh"
+#include "arch/alpha/alpha_linux_process.hh"
+#include "arch/alpha/isa_traits.hh"
-#include "cpu/base.hh"
+#include "base/trace.hh"
#include "cpu/exec_context.hh"
+#include "kern/linux/linux.hh"
#include "mem/functional/functional.hh"
-#include "sim/fake_syscall.hh"
-#include "sim/host.hh"
-#include "sim/process.hh"
-#include "sim/sim_events.hh"
-#include "arch/alpha/isa_traits.hh"
-#include "arch/alpha/alpha_common_syscall_emul.hh"
+#include "sim/process.hh"
#include "sim/syscall_emul.hh"
-#include "sim/root.hh" // for curTick & ticksPerSecond
-
-#include "arch/alpha/alpha_linux_process.hh"
-
-#include "base/trace.hh"
using namespace std;
using namespace AlphaISA;
-///
-/// This class encapsulates the types, structures, constants,
-/// functions, and syscall-number mappings specific to the Alpha Linux
-/// syscall interface.
-///
-class Linux {
-
- public:
-
- //@{
- /// Basic Linux types.
- typedef uint64_t size_t;
- typedef uint64_t off_t;
- typedef int64_t time_t;
- typedef uint32_t uid_t;
- typedef uint32_t gid_t;
- //@}
-
-#if BSD_HOST
- typedef struct stat hst_stat;
- typedef struct stat hst_stat64;
-#else
- typedef struct stat hst_stat ;
- typedef struct stat64 hst_stat64;
-#endif
-
-
- //@{
- /// open(2) flag values.
- static const int TGT_O_RDONLY = 00000000; //!< O_RDONLY
- static const int TGT_O_WRONLY = 00000001; //!< O_WRONLY
- static const int TGT_O_RDWR = 00000002; //!< O_RDWR
- static const int TGT_O_NONBLOCK = 00000004; //!< O_NONBLOCK
- static const int TGT_O_APPEND = 00000010; //!< O_APPEND
- static const int TGT_O_CREAT = 00001000; //!< O_CREAT
- static const int TGT_O_TRUNC = 00002000; //!< O_TRUNC
- static const int TGT_O_EXCL = 00004000; //!< O_EXCL
- static const int TGT_O_NOCTTY = 00010000; //!< O_NOCTTY
- static const int TGT_O_SYNC = 00040000; //!< O_SYNC
- static const int TGT_O_DRD = 00100000; //!< O_DRD
- static const int TGT_O_DIRECTIO = 00200000; //!< O_DIRECTIO
- static const int TGT_O_CACHE = 00400000; //!< O_CACHE
- static const int TGT_O_DSYNC = 02000000; //!< O_DSYNC
- static const int TGT_O_RSYNC = 04000000; //!< O_RSYNC
- //@}
-
- /// This table maps the target open() flags to the corresponding
- /// host open() flags.
- static OpenFlagTransTable openFlagTable[];
-
- /// Number of entries in openFlagTable[].
- static const int NUM_OPEN_FLAGS;
-
- /// Stat buffer. Note that we can't call it 'stat' since that
- /// gets #defined to something else on some systems.
- struct tgt_stat {
- uint32_t st_dev; //!< device
- uint32_t st_ino; //!< inode
- uint32_t st_mode; //!< mode
- uint32_t st_nlink; //!< link count
- uint32_t st_uid; //!< owner's user ID
- uint32_t st_gid; //!< owner's group ID
- uint32_t st_rdev; //!< device number
- int32_t _pad1; //!< for alignment
- int64_t st_size; //!< file size in bytes
- uint64_t st_atimeX; //!< time of last access
- uint64_t st_mtimeX; //!< time of last modification
- uint64_t st_ctimeX; //!< time of last status change
- uint32_t st_blksize; //!< optimal I/O block size
- int32_t st_blocks; //!< number of blocks allocated
- uint32_t st_flags; //!< flags
- uint32_t st_gen; //!< unknown
- };
-
- // same for stat64
- struct tgt_stat64 {
- uint64_t st_dev;
- uint64_t st_ino;
- uint64_t st_rdev;
- int64_t st_size;
- uint64_t st_blocks;
-
- uint32_t st_mode;
- uint32_t st_uid;
- uint32_t st_gid;
- uint32_t st_blksize;
- uint32_t st_nlink;
- uint32_t __pad0;
-
- uint64_t tgt_st_atime;
- uint64_t st_atime_nsec;
- uint64_t tgt_st_mtime;
- uint64_t st_mtime_nsec;
- uint64_t tgt_st_ctime;
- uint64_t st_ctime_nsec;
- int64_t ___unused[3];
- };
-
- /// Length of strings in struct utsname (plus 1 for null char).
- static const int _SYS_NMLN = 65;
-
- /// Interface struct for uname().
- struct utsname {
- char sysname[_SYS_NMLN]; //!< System name.
- char nodename[_SYS_NMLN]; //!< Node name.
- char release[_SYS_NMLN]; //!< OS release.
- char version[_SYS_NMLN]; //!< OS version.
- char machine[_SYS_NMLN]; //!< Machine type.
- };
-
-
- //@{
- /// ioctl() command codes.
- static const unsigned TIOCGETP = 0x40067408;
- static const unsigned TIOCSETP = 0x80067409;
- static const unsigned TIOCSETN = 0x8006740a;
- static const unsigned TIOCSETC = 0x80067411;
- static const unsigned TIOCGETC = 0x40067412;
- static const unsigned FIONREAD = 0x4004667f;
- static const unsigned TIOCISATTY = 0x2000745e;
- static const unsigned TIOCGETS = 0x402c7413;
- static const unsigned TIOCGETA = 0x40127417;
- //@}
-
- /// Resource enumeration for getrlimit().
- enum rlimit_resources {
- TGT_RLIMIT_CPU = 0,
- TGT_RLIMIT_FSIZE = 1,
- TGT_RLIMIT_DATA = 2,
- TGT_RLIMIT_STACK = 3,
- TGT_RLIMIT_CORE = 4,
- TGT_RLIMIT_RSS = 5,
- TGT_RLIMIT_NOFILE = 6,
- TGT_RLIMIT_AS = 7,
- TGT_RLIMIT_VMEM = 7,
- TGT_RLIMIT_NPROC = 8,
- TGT_RLIMIT_MEMLOCK = 9,
- TGT_RLIMIT_LOCKS = 10
- };
-
- /// Limit struct for getrlimit/setrlimit.
- struct rlimit {
- uint64_t rlim_cur; //!< soft limit
- uint64_t rlim_max; //!< hard limit
- };
-
-
- /// For mmap().
- static const unsigned TGT_MAP_ANONYMOUS = 0x10;
-
- /// For gettimeofday().
- struct timeval {
- int64_t tv_sec; //!< seconds
- int64_t tv_usec; //!< microseconds
- };
-
- // For writev/readv
- struct tgt_iovec {
- uint64_t iov_base; // void *
- uint64_t iov_len;
- };
-
- //@{
- /// For getrusage().
- static const int TGT_RUSAGE_SELF = 0;
- static const int TGT_RUSAGE_CHILDREN = -1;
- static const int TGT_RUSAGE_BOTH = -2;
- //@}
-
- /// For getrusage().
- struct rusage {
- struct timeval ru_utime; //!< user time used
- struct timeval ru_stime; //!< system time used
- int64_t ru_maxrss; //!< max rss
- int64_t ru_ixrss; //!< integral shared memory size
- int64_t ru_idrss; //!< integral unshared data "
- int64_t ru_isrss; //!< integral unshared stack "
- int64_t ru_minflt; //!< page reclaims - total vmfaults
- int64_t ru_majflt; //!< page faults
- int64_t ru_nswap; //!< swaps
- int64_t ru_inblock; //!< block input operations
- int64_t ru_oublock; //!< block output operations
- int64_t ru_msgsnd; //!< messages sent
- int64_t ru_msgrcv; //!< messages received
- int64_t ru_nsignals; //!< signals received
- int64_t ru_nvcsw; //!< voluntary context switches
- int64_t ru_nivcsw; //!< involuntary "
- };
-
- /// 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().
-#if !BSD_HOST
- static void
- copyOutStatBuf(FunctionalMemory *mem, Addr addr, hst_stat *host)
- {
- TypedBufferArg<Linux::tgt_stat> tgt(addr);
-
- tgt->st_dev = htog(host->st_dev);
- tgt->st_ino = htog(host->st_ino);
- tgt->st_mode = htog(host->st_mode);
- tgt->st_nlink = htog(host->st_nlink);
- tgt->st_uid = htog(host->st_uid);
- tgt->st_gid = htog(host->st_gid);
- tgt->st_rdev = htog(host->st_rdev);
- tgt->st_size = htog(host->st_size);
- tgt->st_atimeX = htog(host->st_atime);
- tgt->st_mtimeX = htog(host->st_mtime);
- tgt->st_ctimeX = htog(host->st_ctime);
- tgt->st_blksize = htog(host->st_blksize);
- tgt->st_blocks = htog(host->st_blocks);
-
- tgt.copyOut(mem);
- }
-#else
- // Third version for bsd systems which no longer have any support for
- // the old stat() call and stat() is actually a stat64()
- static void
- copyOutStatBuf(FunctionalMemory *mem, Addr addr, hst_stat64 *host)
- {
- TypedBufferArg<Linux::tgt_stat> tgt(addr);
-
- tgt->st_dev = htog(host->st_dev);
- tgt->st_ino = htog(host->st_ino);
- tgt->st_mode = htog(host->st_mode);
- tgt->st_nlink = htog(host->st_nlink);
- tgt->st_uid = htog(host->st_uid);
- tgt->st_gid = htog(host->st_gid);
- tgt->st_rdev = htog(host->st_rdev);
- tgt->st_size = htog(host->st_size);
- tgt->st_atimeX = htog(host->st_atime);
- tgt->st_mtimeX = htog(host->st_mtime);
- tgt->st_ctimeX = htog(host->st_ctime);
- tgt->st_blksize = htog(host->st_blksize);
- tgt->st_blocks = htog(host->st_blocks);
-
- tgt.copyOut(mem);
- }
-#endif
-
-
- // Same for stat64
- static void
- copyOutStat64Buf(FunctionalMemory *mem, int fd, Addr addr, hst_stat64 *host)
- {
- TypedBufferArg<Linux::tgt_stat64> tgt(addr);
-
- // fd == 1 checks are because libc does some checks
- // that the stdout is interactive vs. a file
- // this makes it work on non-linux systems
- if (fd == 1)
- tgt->st_dev = htog((uint64_t)0xA);
- else
- tgt->st_dev = htog((uint64_t)host->st_dev);
- // XXX What about STAT64_HAS_BROKEN_ST_INO ???
- tgt->st_ino = htog((uint64_t)host->st_ino);
- if (fd == 1)
- tgt->st_rdev = htog((uint64_t)0x880d);
- else
- tgt->st_rdev = htog((uint64_t)host->st_rdev);
- tgt->st_size = htog((int64_t)host->st_size);
- tgt->st_blocks = htog((uint64_t)host->st_blocks);
-
- if (fd == 1)
- tgt->st_mode = htog((uint32_t)0x2190);
- else
- tgt->st_mode = htog((uint32_t)host->st_mode);
- tgt->st_uid = htog((uint32_t)host->st_uid);
- tgt->st_gid = htog((uint32_t)host->st_gid);
- tgt->st_blksize = htog((uint32_t)host->st_blksize);
- tgt->st_nlink = htog((uint32_t)host->st_nlink);
- tgt->tgt_st_atime = htog((uint64_t)host->st_atime);
- tgt->tgt_st_mtime = htog((uint64_t)host->st_mtime);
- tgt->tgt_st_ctime = htog((uint64_t)host->st_ctime);
-#if defined(STAT_HAVE_NSEC)
- tgt->st_atime_nsec = htog(host->st_atime_nsec);
- tgt->st_mtime_nsec = htog(host->st_mtime_nsec);
- tgt->st_ctime_nsec = htog(host->st_ctime_nsec);
-#else
- tgt->st_atime_nsec = 0;
- tgt->st_mtime_nsec = 0;
- tgt->st_ctime_nsec = 0;
-#endif
-
- tgt.copyOut(mem);
- }
-
- /// The target system's hostname.
- static const char *hostname;
-
- /// Target uname() handler.
- static SyscallReturn
- unameFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
- {
- TypedBufferArg<Linux::utsname> name(xc->getSyscallArg(0));
-
- strcpy(name->sysname, "Linux");
- strcpy(name->nodename, hostname);
- strcpy(name->release, "2.4.20");
- strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
- strcpy(name->machine, "alpha");
-
- name.copyOut(xc->mem);
- return 0;
- }
-
- /// Target osf_getsysyinfo() handler. Even though this call is
- /// borrowed from Tru64, the subcases that get used appear to be
- /// different in practice from those used by Tru64 processes.
- static SyscallReturn
- osf_getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
- {
- unsigned op = xc->getSyscallArg(0);
- // unsigned nbytes = xc->getSyscallArg(2);
-
- switch (op) {
-
- case 45: { // GSI_IEEE_FP_CONTROL
- TypedBufferArg<uint64_t> fpcr(xc->getSyscallArg(1));
- // I don't think this exactly matches the HW FPCR
- *fpcr = 0;
- fpcr.copyOut(xc->mem);
- return 0;
- }
-
- default:
- cerr << "osf_getsysinfo: unknown op " << op << endl;
- abort();
- break;
- }
-
- return 1;
- }
-
- /// Target osf_setsysinfo() handler.
- static SyscallReturn
- osf_setsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
- ExecContext *xc)
- {
- unsigned op = xc->getSyscallArg(0);
- // unsigned nbytes = xc->getSyscallArg(2);
-
- switch (op) {
-
- case 14: { // SSI_IEEE_FP_CONTROL
- TypedBufferArg<uint64_t> fpcr(xc->getSyscallArg(1));
- // I don't think this exactly matches the HW FPCR
- fpcr.copyIn(xc->mem);
- DPRINTFR(SyscallVerbose, "osf_setsysinfo(SSI_IEEE_FP_CONTROL): "
- " setting FPCR to 0x%x\n", gtoh(*(uint64_t*)fpcr));
- return 0;
- }
-
- default:
- cerr << "osf_setsysinfo: unknown op " << op << endl;
- abort();
- break;
- }
-
- return 1;
- }
-
- /// Target fnctl() handler.
- static SyscallReturn
- fcntlFunc(SyscallDesc *desc, int callnum, 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;
+/// Target uname() handler.
+static SyscallReturn
+unameFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+{
+ TypedBufferArg<Linux::utsname> name(xc->getSyscallArg(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;
+ strcpy(name->sysname, "Linux");
+ strcpy(name->nodename, "m5.eecs.umich.edu");
+ strcpy(name->release, "2.4.20");
+ strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
+ strcpy(name->machine, "alpha");
- 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;
+ name.copyOut(xc->mem);
+ return 0;
+}
- default:
- warn("Unknown fcntl command %d\n", cmd);
- return 0;
- }
+/// Target osf_getsysyinfo() handler. Even though this call is
+/// borrowed from Tru64, the subcases that get used appear to be
+/// different in practice from those used by Tru64 processes.
+static SyscallReturn
+osf_getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+{
+ unsigned op = xc->getSyscallArg(0);
+ // unsigned nbytes = xc->getSyscallArg(2);
+
+ switch (op) {
+
+ case 45: { // GSI_IEEE_FP_CONTROL
+ TypedBufferArg<uint64_t> fpcr(xc->getSyscallArg(1));
+ // I don't think this exactly matches the HW FPCR
+ *fpcr = 0;
+ fpcr.copyOut(xc->mem);
+ return 0;
+ }
+
+ default:
+ cerr << "osf_getsysinfo: unknown op " << op << endl;
+ abort();
+ break;
}
- /// Array of syscall descriptors, indexed by call number.
- static SyscallDesc syscallDescs[];
-
- /// Number of syscalls in syscallDescs[].
- static const int Num_Syscall_Descs;
-
- /// Max supported syscall number.
- static const int Max_Syscall_Desc;
-
- /// Do the specified syscall. Just looks the call number up in
- /// the table and invokes the appropriate handler.
- static void
- doSyscall(int callnum, Process *process, ExecContext *xc)
- {
- if (callnum < 0 || callnum > Max_Syscall_Desc) {
- fatal("Syscall %d out of range", callnum);
- }
-
- SyscallDesc *desc = &syscallDescs[callnum];
+ return 1;
+}
- desc->doSyscall(callnum, process, xc);
+/// Target osf_setsysinfo() handler.
+static SyscallReturn
+osf_setsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
+ ExecContext *xc)
+{
+ unsigned op = xc->getSyscallArg(0);
+ // unsigned nbytes = xc->getSyscallArg(2);
+
+ switch (op) {
+
+ case 14: { // SSI_IEEE_FP_CONTROL
+ TypedBufferArg<uint64_t> fpcr(xc->getSyscallArg(1));
+ // I don't think this exactly matches the HW FPCR
+ fpcr.copyIn(xc->mem);
+ DPRINTFR(SyscallVerbose, "osf_setsysinfo(SSI_IEEE_FP_CONTROL): "
+ " setting FPCR to 0x%x\n", gtoh(*(uint64_t*)fpcr));
+ return 0;
+ }
+
+ default:
+ cerr << "osf_setsysinfo: unknown op " << op << endl;
+ abort();
+ break;
}
-}; // class Linux
+ return 1;
+}
-// open(2) flags translation table
-OpenFlagTransTable Linux::openFlagTable[] = {
-#ifdef _MSC_VER
- { Linux::TGT_O_RDONLY, _O_RDONLY },
- { Linux::TGT_O_WRONLY, _O_WRONLY },
- { Linux::TGT_O_RDWR, _O_RDWR },
- { Linux::TGT_O_APPEND, _O_APPEND },
- { Linux::TGT_O_CREAT, _O_CREAT },
- { Linux::TGT_O_TRUNC, _O_TRUNC },
- { Linux::TGT_O_EXCL, _O_EXCL },
-#ifdef _O_NONBLOCK
- { Linux::TGT_O_NONBLOCK, _O_NONBLOCK },
-#endif
-#ifdef _O_NOCTTY
- { Linux::TGT_O_NOCTTY, _O_NOCTTY },
-#endif
-#ifdef _O_SYNC
- { Linux::TGT_O_SYNC, _O_SYNC },
-#endif
-#else /* !_MSC_VER */
- { Linux::TGT_O_RDONLY, O_RDONLY },
- { Linux::TGT_O_WRONLY, O_WRONLY },
- { Linux::TGT_O_RDWR, O_RDWR },
- { Linux::TGT_O_APPEND, O_APPEND },
- { Linux::TGT_O_CREAT, O_CREAT },
- { Linux::TGT_O_TRUNC, O_TRUNC },
- { Linux::TGT_O_EXCL, O_EXCL },
- { Linux::TGT_O_NONBLOCK, O_NONBLOCK },
- { Linux::TGT_O_NOCTTY, O_NOCTTY },
-#ifdef O_SYNC
- { Linux::TGT_O_SYNC, O_SYNC },
-#endif
-#endif /* _MSC_VER */
-};
-
-const int Linux::NUM_OPEN_FLAGS =
- (sizeof(Linux::openFlagTable)/sizeof(Linux::openFlagTable[0]));
-
-const char *Linux::hostname = "m5.eecs.umich.edu";
-SyscallDesc Linux::syscallDescs[] = {
+SyscallDesc AlphaLinuxProcess::syscallDescs[] = {
/* 0 */ SyscallDesc("osf_syscall", unimplementedFunc),
/* 1 */ SyscallDesc("exit", exitFunc),
/* 2 */ SyscallDesc("fork", unimplementedFunc),
@@ -974,23 +564,6 @@ SyscallDesc Linux::syscallDescs[] = {
/* 441 */ SyscallDesc("keyctl", unimplementedFunc)
};
-const int Linux::Num_Syscall_Descs =
- sizeof(Linux::syscallDescs) / sizeof(SyscallDesc);
-
-const int Linux::Max_Syscall_Desc = Linux::Num_Syscall_Descs - 1;
-
-
-void
-AlphaLinuxProcess::syscall(ExecContext *xc)
-{
- num_syscalls++;
-
- int64_t callnum = xc->regs.intRegFile[ReturnValueReg];
-
- Linux::doSyscall(callnum, this, xc);
-}
-
-
AlphaLinuxProcess::AlphaLinuxProcess(const std::string &name,
ObjectFile *objFile,
int stdin_fd,
@@ -998,7 +571,18 @@ AlphaLinuxProcess::AlphaLinuxProcess(const std::string &name,
int stderr_fd,
std::vector<std::string> &argv,
std::vector<std::string> &envp)
- : LiveProcess(name, objFile, stdin_fd, stdout_fd, stderr_fd, argv, envp)
+ : LiveProcess(name, objFile, stdin_fd, stdout_fd, stderr_fd, argv, envp),
+ Num_Syscall_Descs(sizeof(syscallDescs) / sizeof(SyscallDesc))
{
init_regs->intRegFile[0] = 0;
}
+
+
+
+SyscallDesc*
+AlphaLinuxProcess::getDesc(int callnum)
+{
+ if (callnum < 0 || callnum > Num_Syscall_Descs)
+ return NULL;
+ return &syscallDescs[callnum];
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-20 17:45:03 +0000