diff options
Diffstat (limited to 'src/sim/syscall_emul.hh')
| -rw-r--r-- | src/sim/syscall_emul.hh | 238 |
1 files changed, 176 insertions, 62 deletions
diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh index 5f2ebd428..66e800183 100644 --- a/src/sim/syscall_emul.hh +++ b/src/sim/syscall_emul.hh @@ -55,10 +55,12 @@ #include "base/misc.hh" #include "base/trace.hh" #include "base/types.hh" +#include "config/the_isa.hh" #include "cpu/base.hh" #include "cpu/thread_context.hh" #include "mem/translating_port.hh" #include "mem/page_table.hh" +#include "sim/system.hh" #include "sim/process.hh" /// @@ -258,6 +260,15 @@ SyscallReturn ftruncateFunc(SyscallDesc *desc, int num, 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); @@ -462,7 +473,7 @@ copyOutStat64Buf(TranslatingPort * mem, Addr addr, { typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf; tgt_stat_buf tgt(addr); - convertStatBuf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); + convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY); tgt.copyOut(mem); } @@ -474,8 +485,9 @@ SyscallReturn ioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->getSyscallArg(tc, 0); - unsigned req = process->getSyscallArg(tc, 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); @@ -493,6 +505,7 @@ ioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process, case OS::TIOCGETC_: case OS::TIOCGETS_: case OS::TIOCGETA_: + case OS::TCSETAW_: return -ENOTTY; default: @@ -509,7 +522,9 @@ openFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) return -EFAULT; if (path == "/dev/sysdev0") { @@ -519,8 +534,8 @@ openFunc(SyscallDesc *desc, int callnum, LiveProcess *process, return -ENOENT; } - int tgtFlags = process->getSyscallArg(tc, 1); - int mode = process->getSyscallArg(tc, 2); + int tgtFlags = process->getSyscallArg(tc, index); + int mode = process->getSyscallArg(tc, index); int hostFlags = 0; // translate open flags @@ -558,6 +573,24 @@ openFunc(SyscallDesc *desc, int callnum, LiveProcess *process, } +/// 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> @@ -567,10 +600,13 @@ chmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) { return -EFAULT; + } - uint32_t mode = process->getSyscallArg(tc, 1); + uint32_t mode = process->getSyscallArg(tc, index); mode_t hostMode = 0; // XXX translate mode flags via OS::something??? @@ -594,13 +630,14 @@ SyscallReturn fchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->getSyscallArg(tc, 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 = process->getSyscallArg(tc, 1); + uint32_t mode = process->getSyscallArg(tc, index); mode_t hostMode = 0; // XXX translate mode flags via OS::someting??? @@ -619,10 +656,11 @@ template <class OS> SyscallReturn mremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - Addr start = process->getSyscallArg(tc, 0); - uint64_t old_length = process->getSyscallArg(tc, 1); - uint64_t new_length = process->getSyscallArg(tc, 2); - uint64_t flags = process->getSyscallArg(tc, 3); + 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)) { @@ -668,8 +706,12 @@ statFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 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); @@ -680,8 +722,7 @@ statFunc(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf); + copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -695,8 +736,11 @@ stat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) + 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); @@ -712,8 +756,7 @@ stat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf); + copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -725,7 +768,9 @@ SyscallReturn fstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->getSyscallArg(tc, 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; @@ -742,8 +787,7 @@ fstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf, (fd == 1)); + copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1)); return 0; } @@ -757,8 +801,12 @@ lstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 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); @@ -769,8 +817,7 @@ lstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf); + copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -783,8 +830,12 @@ lstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 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); @@ -800,8 +851,7 @@ lstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStat64Buf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf); + copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -812,7 +862,9 @@ SyscallReturn fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->sim_fd(process->getSyscallArg(tc, 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); @@ -825,8 +877,7 @@ fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - copyOutStatBuf<OS>(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf, (fd == 1)); + copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1)); return 0; } @@ -840,8 +891,12 @@ statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 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); @@ -852,8 +907,7 @@ statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - OS::copyOutStatfsBuf(tc->getMemPort(), - (Addr)(process->getSyscallArg(tc, 1)), &hostBuf); + OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -865,7 +919,9 @@ SyscallReturn fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->sim_fd(process->getSyscallArg(tc, 0)); + int index = 0; + int fd = process->sim_fd(process->getSyscallArg(tc, index)); + Addr bufPtr = process->getSyscallArg(tc, index); if (fd < 0) return -EBADF; @@ -876,8 +932,7 @@ fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process, if (result < 0) return -errno; - OS::copyOutStatfsBuf(tc->getMemPort(), process->getSyscallArg(tc, 1), - &hostBuf); + OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf); return 0; } @@ -889,15 +944,16 @@ SyscallReturn writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int fd = process->getSyscallArg(tc, 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 = tc->getMemPort(); - uint64_t tiov_base = process->getSyscallArg(tc, 1); - size_t count = process->getSyscallArg(tc, 2); + uint64_t tiov_base = process->getSyscallArg(tc, index); + size_t count = process->getSyscallArg(tc, index); struct iovec hiov[count]; for (size_t i = 0; i < count; ++i) { typename OS::tgt_iovec tiov; @@ -938,12 +994,13 @@ template <class OS> SyscallReturn mmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) { - Addr start = p->getSyscallArg(tc, 0); - uint64_t length = p->getSyscallArg(tc, 1); - // int prot = p->getSyscallArg(tc, 2); - int flags = p->getSyscallArg(tc, 3); - // int fd = p->sim_fd(p->getSyscallArg(tc, 4)); - // int offset = p->getSyscallArg(tc, 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 || @@ -960,13 +1017,18 @@ mmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc) } // 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.", p->getSyscallArg(tc, 4)); + "This will break if not /dev/zero.", fd); } return start; @@ -978,8 +1040,9 @@ SyscallReturn getrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - unsigned resource = process->getSyscallArg(tc, 0); - TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, 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: @@ -1013,7 +1076,8 @@ SyscallReturn gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, 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; @@ -1034,10 +1098,14 @@ utimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process, { std::string path; - if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc, 0))) - return -EFAULT; + int index = 0; + if (!tc->getMemPort()->tryReadString(path, + process->getSyscallArg(tc, index))) { + return -EFAULT; + } - TypedBufferArg<typename OS::timeval [2]> tp(process->getSyscallArg(tc, 1)); + TypedBufferArg<typename OS::timeval [2]> + tp(process->getSyscallArg(tc, index)); tp.copyIn(tc->getMemPort()); struct timeval hostTimeval[2]; @@ -1063,8 +1131,9 @@ SyscallReturn getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc) { - int who = process->getSyscallArg(tc, 0); // THREAD, SELF, or CHILDREN - TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, 1)); + 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; @@ -1108,7 +1177,52 @@ getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process, 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::M5_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__ |