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-/*
- * Copyright (c) 2001-2005 The Regents of The University of Michigan
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met: redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer;
- * redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution;
- * neither the name of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Authors: Nathan Binkert
- * Ali Saidi
- */
-
-#ifndef __TRU64_HH__
-#define __TRU64_HH__
-
-#include "kern/operatingsystem.hh"
-#include "sim/byteswap.hh"
-
-#include <sys/stat.h>
-#include <sys/types.h>
-#if defined(__OpenBSD__) || defined(__APPLE__) || defined(__FreeBSD__)
-#include <sys/mount.h>
-#include <sys/param.h>
-#else
-#include <sys/statfs.h>
-#endif
-
-#include <dirent.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include <cerrno>
-#include <cstring> // for memset()
-
-#include "arch/alpha/registers.hh"
-#include "config/the_isa.hh"
-#include "cpu/base.hh"
-#include "debug/SyscallVerbose.hh"
-#include "sim/core.hh"
-#include "sim/syscall_emul.hh"
-
-typedef struct stat global_stat;
-typedef struct statfs global_statfs;
-typedef struct dirent global_dirent;
-
-class SETranslatingPortProxy;
-
-///
-/// This class encapsulates the types, structures, constants,
-/// functions, and syscall-number mappings specific to the Alpha Tru64
-/// syscall interface.
-///
-class Tru64 : public OperatingSystem
-{
-
- public:
-
- //@{
- /// Basic Tru64 types.
- typedef uint64_t size_t;
- typedef uint64_t off_t;
- typedef uint16_t nlink_t;
- typedef int32_t dev_t;
- typedef uint32_t uid_t;
- typedef uint32_t gid_t;
- typedef uint32_t time_t;
- typedef uint32_t mode_t;
- typedef uint32_t ino_t;
- typedef struct { int val[2]; } quad;
- typedef quad fsid_t;
- //@}
-
-
- /// For statfs().
- struct F64_statfs {
- int16_t f_type;
- int16_t f_flags;
- int32_t f_retired1;
- int32_t f_retired2;
- int32_t f_retired3;
- int32_t f_retired4;
- int32_t f_retired5;
- int32_t f_retired6;
- int32_t f_retired7;
- fsid_t f_fsid;
- int32_t f_spare[9];
- char f_retired8[90];
- char f_retired9[90];
- uint64_t dummy[10]; // was union mount_info mount_info;
- uint64_t f_flags2;
- int64_t f_spare2[14];
- int64_t f_fsize;
- int64_t f_bsize;
- int64_t f_blocks;
- int64_t f_bfree;
- int64_t f_bavail;
- int64_t f_files;
- int64_t f_ffree;
- char f_mntonname[1024];
- char f_mntfromname[1024];
- };
-
- /// For old Tru64 v4.x statfs()
- struct pre_F64_statfs {
- int16_t f_type;
- int16_t f_flags;
- int32_t f_fsize;
- int32_t f_bsize;
- int32_t f_blocks;
- int32_t f_bfree;
- int32_t f_bavail;
- int32_t f_files;
- int32_t f_ffree;
- fsid_t f_fsid;
- int32_t f_spare[9];
- char f_mntonname[90];
- char f_mntfromname[90];
- uint64_t dummy[10]; // was union mount_info mount_info;
- };
-
- /// For getdirentries().
- struct dirent
- {
- ino_t d_ino; //!< file number of entry
- uint16_t d_reclen; //!< length of this record
- uint16_t d_namlen; //!< length of string in d_name
- char d_name[256]; //!< dummy name length
- };
-
-
- /// Length of strings in struct utsname (plus 1 for null char).
- static const int _SYS_NMLN = 32;
-
- /// 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.
- };
-
- /// Limit struct for getrlimit/setrlimit.
- struct rlimit {
- uint64_t rlim_cur; //!< soft limit
- uint64_t rlim_max; //!< hard limit
- };
-
-
- /// For getsysinfo() GSI_CPU_INFO option.
- struct cpu_info {
- uint32_t current_cpu; //!< current_cpu
- uint32_t cpus_in_box; //!< cpus_in_box
- uint32_t cpu_type; //!< cpu_type
- uint32_t ncpus; //!< ncpus
- uint64_t cpus_present; //!< cpus_present
- uint64_t cpus_running; //!< cpus_running
- uint64_t cpu_binding; //!< cpu_binding
- uint64_t cpu_ex_binding; //!< cpu_ex_binding
- uint32_t mhz; //!< mhz
- uint32_t unused[3]; //!< future expansion
- };
-
- /// For gettimeofday.
- struct timeval {
- uint32_t tv_sec; //!< seconds
- uint32_t tv_usec; //!< microseconds
- };
-
- /// For getrusage().
- struct rusage {
- struct timeval ru_utime; //!< user time used
- struct timeval ru_stime; //!< system time used
- uint64_t ru_maxrss; //!< ru_maxrss
- uint64_t ru_ixrss; //!< integral shared memory size
- uint64_t ru_idrss; //!< integral unshared data "
- uint64_t ru_isrss; //!< integral unshared stack "
- uint64_t ru_minflt; //!< page reclaims - total vmfaults
- uint64_t ru_majflt; //!< page faults
- uint64_t ru_nswap; //!< swaps
- uint64_t ru_inblock; //!< block input operations
- uint64_t ru_oublock; //!< block output operations
- uint64_t ru_msgsnd; //!< messages sent
- uint64_t ru_msgrcv; //!< messages received
- uint64_t ru_nsignals; //!< signals received
- uint64_t ru_nvcsw; //!< voluntary context switches
- uint64_t ru_nivcsw; //!< involuntary "
- };
-
- /// For sigreturn().
- struct sigcontext {
- int64_t sc_onstack; //!< sigstack state to restore
- int64_t sc_mask; //!< signal mask to restore
- int64_t sc_pc; //!< pc at time of signal
- int64_t sc_ps; //!< psl to retore
- int64_t sc_regs[32]; //!< processor regs 0 to 31
- int64_t sc_ownedfp; //!< fp has been used
- int64_t sc_fpregs[32]; //!< fp regs 0 to 31
- uint64_t sc_fpcr; //!< floating point control reg
- uint64_t sc_fp_control; //!< software fpcr
- int64_t sc_reserved1; //!< reserved for kernel
- uint32_t sc_kreserved1; //!< reserved for kernel
- uint32_t sc_kreserved2; //!< reserved for kernel
- size_t sc_ssize; //!< stack size
- caddr_t sc_sbase; //!< stack start
- uint64_t sc_traparg_a0; //!< a0 argument to trap on exc
- uint64_t sc_traparg_a1; //!< a1 argument to trap on exc
- uint64_t sc_traparg_a2; //!< a2 argument to trap on exc
- uint64_t sc_fp_trap_pc; //!< imprecise pc
- uint64_t sc_fp_trigger_sum; //!< Exception summary at trigg
- uint64_t sc_fp_trigger_inst; //!< Instruction at trigger pc
- };
-
-
-
- /// For table().
- struct tbl_sysinfo {
- uint64_t si_user; //!< User time
- uint64_t si_nice; //!< Nice time
- uint64_t si_sys; //!< System time
- uint64_t si_idle; //!< Idle time
- uint64_t si_hz; //!< hz
- uint64_t si_phz; //!< phz
- uint64_t si_boottime; //!< Boot time in seconds
- uint64_t wait; //!< Wait time
- uint32_t si_max_procs; //!< rpb->rpb_numprocs
- uint32_t pad; //!< padding
- };
-
-
- /// For stack_create.
- struct vm_stack {
- // was void *
- Addr address; //!< address hint
- size_t rsize; //!< red zone size
- size_t ysize; //!< yellow zone size
- size_t gsize; //!< green zone size
- size_t swap; //!< amount of swap to reserve
- size_t incr; //!< growth increment
- uint64_t align; //!< address alignment
- uint64_t flags; //!< MAP_FIXED etc.
- // was struct memalloc_attr *
- Addr attr; //!< allocation policy
- uint64_t reserved; //!< reserved
- };
-
- /// Return values for nxm calls.
- enum {
- KERN_NOT_RECEIVER = 7,
- KERN_NOT_IN_SET = 12
- };
-
- /// For nxm_task_init.
- static const int NXM_TASK_INIT_VP = 2; //!< initial thread is VP
-
- /// Task attribute structure.
- struct nxm_task_attr {
- int64_t nxm_callback; //!< nxm_callback
- unsigned int nxm_version; //!< nxm_version
- unsigned short nxm_uniq_offset; //!< nxm_uniq_offset
- unsigned short flags; //!< flags
- int nxm_quantum; //!< nxm_quantum
- int pad1; //!< pad1
- int64_t pad2; //!< pad2
- };
-
- /// Signal set.
- typedef uint64_t sigset_t;
-
- /// Thread state shared between user & kernel.
- struct ushared_state {
- sigset_t sigmask; //!< thread signal mask
- sigset_t sig; //!< thread pending mask
- // struct nxm_pth_state *
- Addr pth_id; //!< out-of-line state
- int flags; //!< shared flags
-#define US_SIGSTACK 0x1 // thread called sigaltstack
-#define US_ONSTACK 0x2 // thread is running on altstack
-#define US_PROFILE 0x4 // thread called profil
-#define US_SYSCALL 0x8 // thread in syscall
-#define US_TRAP 0x10 // thread has trapped
-#define US_YELLOW 0x20 // thread has mellowed yellow
-#define US_YZONE 0x40 // thread has zoned out
-#define US_FP_OWNED 0x80 // thread used floating point
-
- int cancel_state; //!< thread's cancelation state
-#define US_CANCEL 0x1 // cancel pending
-#define US_NOCANCEL 0X2 // synch cancel disabled
-#define US_SYS_NOCANCEL 0x4 // syscall cancel disabled
-#define US_ASYNC_NOCANCEL 0x8 // asynch cancel disabled
-#define US_CANCEL_BITS (US_NOCANCEL|US_SYS_NOCANCEL|US_ASYNC_NOCANCEL)
-#define US_CANCEL_MASK (US_CANCEL|US_NOCANCEL|US_SYS_NOCANCEL| \
- US_ASYNC_NOCANCEL)
-
- // These are semi-shared. They are always visible to
- // the kernel but are never context-switched by the library.
-
- int nxm_ssig; //!< scheduler's synchronous signals
- int reserved1; //!< reserved1
- int64_t nxm_active; //!< scheduler active
- int64_t reserved2; //!< reserved2
- };
-
- struct nxm_sched_state {
- struct ushared_state nxm_u; //!< state own by user thread
- unsigned int nxm_bits; //!< scheduler state / slot
- int nxm_quantum; //!< quantum count-down value
- int nxm_set_quantum; //!< quantum reset value
- int nxm_sysevent; //!< syscall state
- // struct nxm_upcall *
- Addr nxm_uc_ret; //!< stack ptr of null thread
- // void *
- Addr nxm_tid; //!< scheduler's thread id
- int64_t nxm_va; //!< page fault address
- // struct nxm_pth_state *
- Addr nxm_pthid; //!< id of null thread
- uint64_t nxm_bound_pcs_count; //!< bound PCS thread count
- int64_t pad[2]; //!< pad
- };
-
- /// nxm_shared.
- struct nxm_shared {
- int64_t nxm_callback; //!< address of upcall routine
- unsigned int nxm_version; //!< version number
- unsigned short nxm_uniq_offset; //!< correction factor for TEB
- unsigned short pad1; //!< pad1
- int64_t space[2]; //!< future growth
- struct nxm_sched_state nxm_ss[1]; //!< array of shared areas
- };
-
- /// nxm_slot_state_t.
- enum nxm_slot_state_t {
- NXM_SLOT_AVAIL,
- NXM_SLOT_BOUND,
- NXM_SLOT_UNBOUND,
- NXM_SLOT_EMPTY
- };
-
- /// nxm_config_info
- struct nxm_config_info {
- int nxm_nslots_per_rad; //!< max number of VP slots per RAD
- int nxm_nrads; //!< max number of RADs
- // nxm_slot_state_t *
- Addr nxm_slot_state; //!< per-VP slot state
- // struct nxm_shared *
- Addr nxm_rad[1]; //!< per-RAD shared areas
- };
-
- /// For nxm_thread_create.
- enum nxm_thread_type {
- NXM_TYPE_SCS = 0,
- NXM_TYPE_VP = 1,
- NXM_TYPE_MANAGER = 2
- };
-
- /// Thread attributes.
- struct nxm_thread_attr {
- int version; //!< version
- int type; //!< type
- int cancel_flags; //!< cancel_flags
- int priority; //!< priority
- int policy; //!< policy
- int signal_type; //!< signal_type
- // void *
- Addr pthid; //!< pthid
- sigset_t sigmask; //!< sigmask
- /// Initial register values.
- struct {
- uint64_t pc; //!< pc
- uint64_t sp; //!< sp
- uint64_t a0; //!< a0
- } registers;
- uint64_t pad2[2]; //!< pad2
- };
-
- /// Helper function to convert a host statfs buffer to a target statfs
- /// buffer. Also copies the target buffer out to the simulated
- /// memory space. Used by statfs() and fstatfs().
- template <class T>
- static void
- copyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr,
- global_statfs *host)
- {
- using namespace TheISA;
-
- TypedBufferArg<T> tgt(addr);
-
-#if defined(__OpenBSD__) || defined(__APPLE__) || defined(__FreeBSD__)
- tgt->f_type = 0;
-#else
- tgt->f_type = htog(host->f_type);
-#endif
- tgt->f_bsize = htog(host->f_bsize);
- tgt->f_blocks = htog(host->f_blocks);
- tgt->f_bfree = htog(host->f_bfree);
- tgt->f_bavail = htog(host->f_bavail);
- tgt->f_files = htog(host->f_files);
- tgt->f_ffree = htog(host->f_ffree);
-
- // Is this as string normally?
- memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid));
-
- tgt.copyOut(mem);
- }
-
-
- /// The target system's hostname.
- static const char *hostname;
-
-
- /// Target getdirentries() handler.
- static SyscallReturn
- getdirentriesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- using namespace TheISA;
-
-#if defined(__APPLE__) || defined(__CYGWIN__)
- panic("getdirent not implemented on cygwin!");
-#else
- int index = 0;
- int fd = process->getSimFD(process->getSyscallArg(tc, index));
- Addr tgt_buf = process->getSyscallArg(tc, index);
- int tgt_nbytes = process->getSyscallArg(tc, index);
- Addr tgt_basep = process->getSyscallArg(tc, index);
-
- char * const host_buf = new char[tgt_nbytes];
-
- // just pass basep through uninterpreted.
- TypedBufferArg<int64_t> basep(tgt_basep);
- basep.copyIn(tc->getMemProxy());
- long host_basep = (off_t)htog((int64_t)*basep);
- int host_result = getdirentries(fd, host_buf, tgt_nbytes, &host_basep);
-
- // check for error
- if (host_result < 0) {
- delete [] host_buf;
- return -errno;
- }
-
- // no error: copy results back to target space
- Addr tgt_buf_ptr = tgt_buf;
- char *host_buf_ptr = host_buf;
- char *host_buf_end = host_buf + host_result;
- while (host_buf_ptr < host_buf_end) {
- global_dirent *host_dp = (global_dirent *)host_buf_ptr;
- int namelen = strlen(host_dp->d_name);
-
- // Actual size includes padded string rounded up for alignment.
- // Subtract 256 for dummy char array in Tru64::dirent definition.
- // Add 1 to namelen for terminating null char.
- int tgt_bufsize = sizeof(Tru64::dirent) - 256 + roundUp(namelen+1, 8);
- TypedBufferArg<Tru64::dirent> tgt_dp(tgt_buf_ptr, tgt_bufsize);
- tgt_dp->d_ino = host_dp->d_ino;
- tgt_dp->d_reclen = tgt_bufsize;
- tgt_dp->d_namlen = namelen;
- strcpy(tgt_dp->d_name, host_dp->d_name);
- tgt_dp.copyOut(tc->getMemProxy());
-
- tgt_buf_ptr += tgt_bufsize;
- host_buf_ptr += host_dp->d_reclen;
- }
-
- delete [] host_buf;
-
- *basep = htog((int64_t)host_basep);
- basep.copyOut(tc->getMemProxy());
-
- return tgt_buf_ptr - tgt_buf;
-#endif
- }
-
- /// Target sigreturn() handler.
- static SyscallReturn
- sigreturnFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- using namespace TheISA;
-
- int index = 0;
- TypedBufferArg<Tru64::sigcontext> sc(process->getSyscallArg(tc, index));
-
- sc.copyIn(tc->getMemProxy());
-
- // Restore state from sigcontext structure.
- // Note that we'll advance PC <- NPC before the end of the cycle,
- // so we need to restore the desired PC into NPC.
- // The current regs->pc will get clobbered.
- PCState pc = tc->pcState();
- pc.npc(htog(sc->sc_pc));
- tc->pcState(pc);
-
- for (int i = 0; i < 31; ++i) {
- tc->setIntReg(i, htog(sc->sc_regs[i]));
- tc->setFloatRegBits(i, htog(sc->sc_fpregs[i]));
- }
-
- tc->setMiscRegNoEffect(AlphaISA::MISCREG_FPCR, htog(sc->sc_fpcr));
-
- return 0;
- }
-
-
- //
- // Mach syscalls -- identified by negated syscall numbers
- //
-
- /// Create a stack region for a thread.
- static SyscallReturn
- stack_createFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- using namespace TheISA;
-
- int index = 0;
- TypedBufferArg<Tru64::vm_stack> argp(process->getSyscallArg(tc, index));
-
- argp.copyIn(tc->getMemProxy());
-
- int stack_size =
- gtoh(argp->rsize) + gtoh(argp->ysize) + gtoh(argp->gsize);
-
- // if the user chose an address, just let them have it. Otherwise
- // pick one for them.
- Addr stack_base = gtoh(argp->address);
-
- if (stack_base == 0) {
- stack_base = process->next_thread_stack_base;
- process->next_thread_stack_base -= stack_size;
- }
-
- Addr rounded_stack_base = roundDown(stack_base, PageBytes);
- Addr rounded_stack_size = roundUp(stack_size, PageBytes);
-
- DPRINTF(SyscallVerbose,
- "stack_create: allocating stack @ %#x size %#x "
- "(rounded from %#x, %#x)\n",
- rounded_stack_base, rounded_stack_size,
- stack_base, stack_size);
-
- // map memory
- process->allocateMem(rounded_stack_base, rounded_stack_size);
-
- argp->address = gtoh(rounded_stack_base);
- argp.copyOut(tc->getMemProxy());
-
- return 0;
- }
-
- /// NXM library version stamp.
- static
- const int NXM_LIB_VERSION = 301003;
-
- /// This call sets up the interface between the user and kernel
- /// schedulers by creating a shared-memory region. The shared memory
- /// region has several structs, some global, some per-RAD, some per-VP.
- static SyscallReturn
- nxm_task_initFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- using namespace std;
- using namespace TheISA;
-
- int index = 0;
- TypedBufferArg<Tru64::nxm_task_attr>
- attrp(process->getSyscallArg(tc, index));
- TypedBufferArg<Addr> configptr_ptr(process->getSyscallArg(tc, index));
-
- attrp.copyIn(tc->getMemProxy());
-
- if (gtoh(attrp->nxm_version) != NXM_LIB_VERSION) {
- cerr << "nxm_task_init: thread library version mismatch! "
- << "got " << attrp->nxm_version
- << ", expected " << NXM_LIB_VERSION << endl;
- abort();
- }
-
- if (gtoh(attrp->flags) != Tru64::NXM_TASK_INIT_VP) {
- cerr << "nxm_task_init: bad flag value " << attrp->flags
- << " (expected " << Tru64::NXM_TASK_INIT_VP << ")" << endl;
- abort();
- }
-
- Addr base_addr = 0x12000; // was 0x3f0000000LL;
- Addr cur_addr = base_addr; // next addresses to use
- // first comes the config_info struct
- Addr config_addr = cur_addr;
- cur_addr += sizeof(Tru64::nxm_config_info);
- // next comes the per-cpu state vector
- Addr slot_state_addr = cur_addr;
- int slot_state_size =
- process->numCpus() * sizeof(Tru64::nxm_slot_state_t);
- cur_addr += slot_state_size;
- // now the per-RAD state struct (we only support one RAD)
- cur_addr = 0x14000; // bump up addr for alignment
- Addr rad_state_addr = cur_addr;
- int rad_state_size =
- (sizeof(Tru64::nxm_shared)
- + (process->numCpus()-1) * sizeof(Tru64::nxm_sched_state));
- cur_addr += rad_state_size;
-
- // now initialize a config_info struct and copy it out to user space
- TypedBufferArg<Tru64::nxm_config_info> config(config_addr);
-
- config->nxm_nslots_per_rad = htog(process->numCpus());
- config->nxm_nrads = htog(1); // only one RAD in our system!
- config->nxm_slot_state = htog(slot_state_addr);
- config->nxm_rad[0] = htog(rad_state_addr);
-
- // initialize the slot_state array and copy it out
- TypedBufferArg<Tru64::nxm_slot_state_t> slot_state(slot_state_addr,
- slot_state_size);
- for (int i = 0; i < process->numCpus(); ++i) {
- // CPU 0 is bound to the calling process; all others are available
- // XXX this code should have an endian conversion, but I don't think
- // it works anyway
- slot_state[i] =
- (i == 0) ? Tru64::NXM_SLOT_BOUND : Tru64::NXM_SLOT_AVAIL;
- }
-
- // same for the per-RAD "shared" struct. Note that we need to
- // allocate extra bytes for the per-VP array which is embedded at
- // the end.
- TypedBufferArg<Tru64::nxm_shared> rad_state(rad_state_addr,
- rad_state_size);
-
- rad_state->nxm_callback = attrp->nxm_callback;
- rad_state->nxm_version = attrp->nxm_version;
- rad_state->nxm_uniq_offset = attrp->nxm_uniq_offset;
- for (int i = 0; i < process->numCpus(); ++i) {
- Tru64::nxm_sched_state *ssp = &rad_state->nxm_ss[i];
- ssp->nxm_u.sigmask = htog(0);
- ssp->nxm_u.sig = htog(0);
- ssp->nxm_u.flags = htog(0);
- ssp->nxm_u.cancel_state = htog(0);
- ssp->nxm_u.nxm_ssig = 0;
- ssp->nxm_bits = htog(0);
- ssp->nxm_quantum = attrp->nxm_quantum;
- ssp->nxm_set_quantum = attrp->nxm_quantum;
- ssp->nxm_sysevent = htog(0);
-
- if (i == 0) {
- uint64_t uniq = tc->readMiscRegNoEffect(AlphaISA::MISCREG_UNIQ);
- ssp->nxm_u.pth_id = htog(uniq + gtoh(attrp->nxm_uniq_offset));
- ssp->nxm_u.nxm_active = htog(uniq | 1);
- }
- else {
- ssp->nxm_u.pth_id = htog(0);
- ssp->nxm_u.nxm_active = htog(0);
- }
- }
-
- //
- // copy pointer to shared config area out to user
- //
- *configptr_ptr = htog(config_addr);
-
- // Register this as a valid address range with the process
- base_addr = roundDown(base_addr, PageBytes);
- int size = cur_addr - base_addr;
- process->allocateMem(base_addr, roundUp(size, PageBytes));
-
- config.copyOut(tc->getMemProxy());
- slot_state.copyOut(tc->getMemProxy());
- rad_state.copyOut(tc->getMemProxy());
- configptr_ptr.copyOut(tc->getMemProxy());
-
- return 0;
- }
-
- /// Initialize thread context.
- static void
- init_thread_context(LiveProcess *process, ThreadContext *tc,
- Tru64::nxm_thread_attr *attrp, uint64_t uniq_val)
- {
- using namespace TheISA;
-
- tc->clearArchRegs();
-
- process->setSyscallArg(tc, 0, gtoh(attrp->registers.a0));
- tc->setIntReg(27/*t12*/, gtoh(attrp->registers.pc));
- tc->setIntReg(TheISA::StackPointerReg, gtoh(attrp->registers.sp));
- tc->setMiscRegNoEffect(AlphaISA::MISCREG_UNIQ, uniq_val);
-
- tc->pcState(gtoh(attrp->registers.pc));
-
- tc->activate();
- }
-
- /// Create thread.
- static SyscallReturn
- nxm_thread_createFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- using namespace std;
- using namespace TheISA;
-
- int index = 0;
- TypedBufferArg<Tru64::nxm_thread_attr>
- attrp(process->getSyscallArg(tc, index));
- TypedBufferArg<uint64_t> kidp(process->getSyscallArg(tc, index));
- int thread_index = process->getSyscallArg(tc, index);
-
- // get attribute args
- attrp.copyIn(tc->getMemProxy());
-
- if (gtoh(attrp->version) != NXM_LIB_VERSION) {
- cerr << "nxm_thread_create: thread library version mismatch! "
- << "got " << attrp->version
- << ", expected " << NXM_LIB_VERSION << endl;
- abort();
- }
-
- if (thread_index < 0 || thread_index > process->numCpus()) {
- cerr << "nxm_thread_create: bad thread index " << thread_index
- << endl;
- abort();
- }
-
- // On a real machine, the per-RAD shared structure is in
- // shared memory, so both the user and kernel can get at it.
- // We don't have that luxury, so we just copy it in and then
- // back out again.
- int rad_state_size =
- (sizeof(Tru64::nxm_shared) +
- (process->numCpus()-1) * sizeof(Tru64::nxm_sched_state));
-
- TypedBufferArg<Tru64::nxm_shared> rad_state(0x14000,
- rad_state_size);
- rad_state.copyIn(tc->getMemProxy());
-
- uint64_t uniq_val = gtoh(attrp->pthid) - gtoh(rad_state->nxm_uniq_offset);
-
- if (gtoh(attrp->type) == Tru64::NXM_TYPE_MANAGER) {
- // DEC pthreads seems to always create one of these (in
- // addition to N application threads), but we don't use it,
- // so don't bother creating it.
-
- // This is supposed to be a port number. Make something up.
- *kidp = htog(99);
- kidp.copyOut(tc->getMemProxy());
-
- return 0;
- } else if (gtoh(attrp->type) == Tru64::NXM_TYPE_VP) {
- // A real "virtual processor" kernel thread. Need to fork
- // this thread on another CPU.
- Tru64::nxm_sched_state *ssp = &rad_state->nxm_ss[thread_index];
-
- if (gtoh(ssp->nxm_u.nxm_active) != 0)
- return (int) Tru64::KERN_NOT_RECEIVER;
-
- ssp->nxm_u.pth_id = attrp->pthid;
- ssp->nxm_u.nxm_active = htog(uniq_val | 1);
-
- rad_state.copyOut(tc->getMemProxy());
-
- Addr slot_state_addr = 0x12000 + sizeof(Tru64::nxm_config_info);
- int slot_state_size =
- process->numCpus() * sizeof(Tru64::nxm_slot_state_t);
-
- TypedBufferArg<Tru64::nxm_slot_state_t>
- slot_state(slot_state_addr,
- slot_state_size);
-
- slot_state.copyIn(tc->getMemProxy());
-
- if (slot_state[thread_index] != Tru64::NXM_SLOT_AVAIL) {
- cerr << "nxm_thread_createFunc: requested VP slot "
- << thread_index << " not available!" << endl;
- fatal("");
- }
-
- // XXX This should have an endian conversion but I think this code
- // doesn't work anyway
- slot_state[thread_index] = Tru64::NXM_SLOT_BOUND;
-
- slot_state.copyOut(tc->getMemProxy());
-
- // Find a free simulator thread context.
- ThreadContext *tc = process->findFreeContext();
- if (tc) {
- // inactive context... grab it
- init_thread_context(process, tc, attrp, uniq_val);
-
- // This is supposed to be a port number, but we'll try
- // and get away with just sticking the thread index
- // here.
- *kidp = htog(thread_index);
- kidp.copyOut(tc->getMemProxy());
-
- return 0;
- }
-
- // fell out of loop... no available inactive context
- cerr << "nxm_thread_create: no idle contexts available." << endl;
- abort();
- } else {
- cerr << "nxm_thread_create: can't handle thread type "
- << attrp->type << endl;
- abort();
- }
-
- return 0;
- }
-
- /// Thread idle call (like yield()).
- static SyscallReturn
- nxm_idleFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- return 0;
- }
-
- /// Block thread.
- static SyscallReturn
- nxm_thread_blockFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- using namespace std;
-
- int index = 0;
- uint64_t tid = process->getSyscallArg(tc, index);
- uint64_t secs = process->getSyscallArg(tc, index);
- uint64_t flags = process->getSyscallArg(tc, index);
- uint64_t action = process->getSyscallArg(tc, index);
- uint64_t usecs = process->getSyscallArg(tc, index);
-
- cout << tc->getCpuPtr()->name() << ": nxm_thread_block " << tid << " "
- << secs << " " << flags << " " << action << " " << usecs << endl;
-
- return 0;
- }
-
- /// block.
- static SyscallReturn
- nxm_blockFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- using namespace std;
-
- int index = 0;
- Addr uaddr = process->getSyscallArg(tc, index);
- uint64_t val = process->getSyscallArg(tc, index);
- uint64_t secs = process->getSyscallArg(tc, index);
- uint64_t usecs = process->getSyscallArg(tc, index);
- uint64_t flags = process->getSyscallArg(tc, index);
-
- BaseCPU *cpu = tc->getCpuPtr();
-
- cout << cpu->name() << ": nxm_block "
- << hex << uaddr << dec << " " << val
- << " " << secs << " " << usecs
- << " " << flags << endl;
-
- return 0;
- }
-
- /// Unblock thread.
- static SyscallReturn
- nxm_unblockFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- using namespace std;
-
- int index = 0;
- Addr uaddr = process->getSyscallArg(tc, index);
-
- cout << tc->getCpuPtr()->name() << ": nxm_unblock "
- << hex << uaddr << dec << endl;
-
- return 0;
- }
-
- /// Switch thread priority.
- static SyscallReturn
- swtch_priFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- // Attempts to switch to another runnable thread (if there is
- // one). Returns false if there are no other threads to run
- // (i.e., the thread can reasonably spin-wait) or true if there
- // are other threads.
- //
- // Since we assume at most one "kernel" thread per CPU, it's
- // always safe to return false here.
- return 0; //false;
- }
-
-
- /// Activate thread context waiting on a channel. Just activate one
- /// by default.
- static int
- activate_waiting_context(Addr uaddr, LiveProcess *process,
- bool activate_all = false)
- {
- using namespace std;
-
- int num_activated = 0;
-
- list<Process::WaitRec>::iterator i = process->waitList.begin();
- list<Process::WaitRec>::iterator end = process->waitList.end();
-
- while (i != end && (num_activated == 0 || activate_all)) {
- if (i->waitChan == uaddr) {
- // found waiting process: make it active
- ThreadContext *newCtx = i->waitingContext;
- assert(newCtx->status() == ThreadContext::Suspended);
- newCtx->activate();
-
- // get rid of this record
- i = process->waitList.erase(i);
-
- ++num_activated;
- } else {
- ++i;
- }
- }
-
- return num_activated;
- }
-
- /// M5 hacked-up lock acquire.
- static void
- m5_lock_mutex(Addr uaddr, LiveProcess *process, ThreadContext *tc)
- {
- using namespace TheISA;
-
- TypedBufferArg<uint64_t> lockp(uaddr);
-
- lockp.copyIn(tc->getMemProxy());
-
- if (gtoh(*lockp) == 0) {
- // lock is free: grab it
- *lockp = htog(1);
- lockp.copyOut(tc->getMemProxy());
- } else {
- // lock is busy: disable until free
- process->waitList.push_back(Process::WaitRec(uaddr, tc));
- tc->suspend();
- }
- }
-
- /// M5 unlock call.
- static void
- m5_unlock_mutex(Addr uaddr, LiveProcess *process, ThreadContext *tc)
- {
- TypedBufferArg<uint64_t> lockp(uaddr);
-
- lockp.copyIn(tc->getMemProxy());
- assert(*lockp != 0);
-
- // Check for a process waiting on the lock.
- int num_waiting = activate_waiting_context(uaddr, process);
-
- // clear lock field if no waiting context is taking over the lock
- if (num_waiting == 0) {
- *lockp = 0;
- lockp.copyOut(tc->getMemProxy());
- }
- }
-
- /// Lock acquire syscall handler.
- static SyscallReturn
- m5_mutex_lockFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- int index = 0;
- Addr uaddr = process->getSyscallArg(tc, index);
-
- m5_lock_mutex(uaddr, process, tc);
-
- // Return 0 since we will always return to the user with the lock
- // acquired. We will just keep the context inactive until that is
- // true.
- return 0;
- }
-
- /// Try lock (non-blocking).
- static SyscallReturn
- m5_mutex_trylockFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- using namespace TheISA;
-
- int index = 0;
- Addr uaddr = process->getSyscallArg(tc, index);
- TypedBufferArg<uint64_t> lockp(uaddr);
-
- lockp.copyIn(tc->getMemProxy());
-
- if (gtoh(*lockp) == 0) {
- // lock is free: grab it
- *lockp = htog(1);
- lockp.copyOut(tc->getMemProxy());
- return 0;
- } else {
- return 1;
- }
- }
-
- /// Unlock syscall handler.
- static SyscallReturn
- m5_mutex_unlockFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- int index = 0;
- Addr uaddr = process->getSyscallArg(tc, index);
-
- m5_unlock_mutex(uaddr, process, tc);
-
- return 0;
- }
-
- /// Signal ocndition.
- static SyscallReturn
- m5_cond_signalFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- int index = 0;
- Addr cond_addr = process->getSyscallArg(tc, index);
-
- // Wake up one process waiting on the condition variable.
- activate_waiting_context(cond_addr, process);
-
- return 0;
- }
-
- /// Wake up all processes waiting on the condition variable.
- static SyscallReturn
- m5_cond_broadcastFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- int index = 0;
- Addr cond_addr = process->getSyscallArg(tc, index);
-
- activate_waiting_context(cond_addr, process, true);
-
- return 0;
- }
-
- /// Wait on a condition.
- static SyscallReturn
- m5_cond_waitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- using namespace TheISA;
-
- int index = 0;
- Addr cond_addr = process->getSyscallArg(tc, index);
- Addr lock_addr = process->getSyscallArg(tc, index);
- TypedBufferArg<uint64_t> condp(cond_addr);
- TypedBufferArg<uint64_t> lockp(lock_addr);
-
- // user is supposed to acquire lock before entering
- lockp.copyIn(tc->getMemProxy());
- assert(gtoh(*lockp) != 0);
-
- m5_unlock_mutex(lock_addr, process, tc);
-
- process->waitList.push_back(Process::WaitRec(cond_addr, tc));
- tc->suspend();
-
- return 0;
- }
-
- /// Thread exit.
- static SyscallReturn
- m5_thread_exitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- assert(tc->status() == ThreadContext::Active);
- tc->halt();
-
- return 0;
- }
-
- /// Indirect syscall invocation (call #0).
- static SyscallReturn
- indirectSyscallFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
- ThreadContext *tc)
- {
- int index = 0;
- int new_callnum = process->getSyscallArg(tc, index);
-
- for (int i = 0; i < 5; ++i)
- process->setSyscallArg(tc, i, process->getSyscallArg(tc, index));
-
-
- SyscallDesc *new_desc = process->getDesc(new_callnum);
- if (desc == NULL)
- fatal("Syscall %d out of range", callnum);
-
- new_desc->doSyscall(new_callnum, process, tc);
-
- return 0;
- }
-
-}; // class Tru64
-
-class Tru64_F64 : public Tru64
-{
- public:
-
- /// Stat buffer. Note that Tru64 v5.0+ use a new "F64" stat
- /// structure, and a new set of syscall numbers for stat calls.
- /// On some hosts (notably Linux) define st_atime, st_mtime, and
- /// st_ctime as macros, so we append an X to get around this.
- struct F64_stat {
- dev_t st_dev; //!< st_dev
- int32_t st_retired1; //!< st_retired1
- mode_t st_mode; //!< st_mode
- nlink_t st_nlink; //!< st_nlink
- uint16_t st_nlink_reserved; //!< st_nlink_reserved
- uid_t st_uid; //!< st_uid
- gid_t st_gid; //!< st_gid
- dev_t st_rdev; //!< st_rdev
- dev_t st_ldev; //!< st_ldev
- off_t st_size; //!< st_size
- time_t st_retired2; //!< st_retired2
- int32_t st_uatime; //!< st_uatime
- time_t st_retired3; //!< st_retired3
- int32_t st_umtime; //!< st_umtime
- time_t st_retired4; //!< st_retired4
- int32_t st_uctime; //!< st_uctime
- int32_t st_retired5; //!< st_retired5
- int32_t st_retired6; //!< st_retired6
- uint32_t st_flags; //!< st_flags
- uint32_t st_gen; //!< st_gen
- uint64_t st_spare[4]; //!< st_spare[4]
- ino_t st_ino; //!< st_ino
- int32_t st_ino_reserved; //!< st_ino_reserved
- time_t st_atimeX; //!< st_atime
- int32_t st_atime_reserved; //!< st_atime_reserved
- time_t st_mtimeX; //!< st_mtime
- int32_t st_mtime_reserved; //!< st_mtime_reserved
- time_t st_ctimeX; //!< st_ctime
- int32_t st_ctime_reserved; //!< st_ctime_reserved
- uint64_t st_blksize; //!< st_blksize
- uint64_t st_blocks; //!< st_blocks
- };
-
- typedef F64_stat tgt_stat;
-/*
- static void copyOutStatBuf(SETranslatingPortProxy &mem, Addr addr,
- global_stat *host)
- {
- Tru64::copyOutStatBuf<Tru64::F64_stat>(mem, addr, host);
- }*/
-
- static void copyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr,
- global_statfs *host)
- {
- Tru64::copyOutStatfsBuf<Tru64::F64_statfs>(mem, addr, host);
- }
-};
-
-class Tru64_PreF64 : public Tru64
-{
- public:
-
- /// Old Tru64 v4.x stat struct.
- /// Tru64 maintains backwards compatibility with v4.x by
- /// implementing another set of stat functions using the old
- /// structure definition and binding them to the old syscall
- /// numbers.
-
- struct pre_F64_stat {
- dev_t st_dev;
- ino_t st_ino;
- mode_t st_mode;
- nlink_t st_nlink;
- uid_t st_uid __attribute__ ((aligned(sizeof(uid_t))));
- gid_t st_gid;
- dev_t st_rdev;
- off_t st_size __attribute__ ((aligned(sizeof(off_t))));
- time_t st_atimeX;
- int32_t st_uatime;
- time_t st_mtimeX;
- int32_t st_umtime;
- time_t st_ctimeX;
- int32_t st_uctime;
- uint32_t st_blksize;
- int32_t st_blocks;
- uint32_t st_flags;
- uint32_t st_gen;
- };
-
- typedef pre_F64_stat tgt_stat;
-/*
- static void copyOutStatBuf(SETranslatingPortProxy &mem, Addr addr,
- global_stat *host)
- {
- Tru64::copyOutStatBuf<Tru64::pre_F64_stat>(mem, addr, host);
- }*/
-
- static void copyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr,
- global_statfs *host)
- {
- Tru64::copyOutStatfsBuf<Tru64::pre_F64_statfs>(mem, addr, host);
- }
-};
-
-#endif // __TRU64_HH__
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-02 20:45:19 +0000