1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

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57#include "base/misc.hh"
58#include "base/trace.hh"
59#include "base/types.hh"
60#include "config/the_isa.hh"
61#include "cpu/base.hh"
62#include "cpu/thread_context.hh"
63#include "debug/SyscallVerbose.hh"
64#include "mem/page_table.hh"
65#include "mem/se_translating_port_proxy.hh"
65#include "mem/translating_port.hh"
66#include "sim/byteswap.hh"
67#include "sim/process.hh"
68#include "sim/syscallreturn.hh"
69#include "sim/system.hh"
70
71///
72/// System call descriptor.
73///
74class SyscallDesc {
75
76 public:

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116 memset(bufPtr, 0, size);
117 }
118
119 virtual ~BaseBufferArg() { delete [] bufPtr; }
120
121 //
122 // copy data into simulator space (read from target memory)
123 //
123 virtual bool copyIn(SETranslatingPortProxy* memproxy)
124 virtual bool copyIn(TranslatingPort *memport)
125 {
125 memproxy->readBlob(addr, bufPtr, size);
126 memport->readBlob(addr, bufPtr, size);
127 return true; // no EFAULT detection for now
128 }
129
130 //
131 // copy data out of simulator space (write to target memory)
132 //
132 virtual bool copyOut(SETranslatingPortProxy* memproxy)
133 virtual bool copyOut(TranslatingPort *memport)
134 {
134 memproxy->writeBlob(addr, bufPtr, size);
135 memport->writeBlob(addr, bufPtr, size);
136 return true; // no EFAULT detection for now
137 }
138
139 protected:
140 Addr addr;
141 int size;
142 uint8_t *bufPtr;
143};

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396convertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false)
397{
398 using namespace TheISA;
399
400 if (fakeTTY)
401 tgt->st_dev = 0xA;
402 else
403 tgt->st_dev = host->st_dev;
403 tgt->st_dev = TheISA::htog(tgt->st_dev);
404 tgt->st_dev = htog(tgt->st_dev);
405 tgt->st_ino = host->st_ino;
405 tgt->st_ino = TheISA::htog(tgt->st_ino);
406 tgt->st_ino = htog(tgt->st_ino);
407 tgt->st_mode = host->st_mode;
408 if (fakeTTY) {
409 // Claim to be a character device
410 tgt->st_mode &= ~S_IFMT; // Clear S_IFMT
411 tgt->st_mode |= S_IFCHR; // Set S_IFCHR
412 }
412 tgt->st_mode = TheISA::htog(tgt->st_mode);
413 tgt->st_mode = htog(tgt->st_mode);
414 tgt->st_nlink = host->st_nlink;
414 tgt->st_nlink = TheISA::htog(tgt->st_nlink);
415 tgt->st_nlink = htog(tgt->st_nlink);
416 tgt->st_uid = host->st_uid;
416 tgt->st_uid = TheISA::htog(tgt->st_uid);
417 tgt->st_uid = htog(tgt->st_uid);
418 tgt->st_gid = host->st_gid;
418 tgt->st_gid = TheISA::htog(tgt->st_gid);
419 tgt->st_gid = htog(tgt->st_gid);
420 if (fakeTTY)
421 tgt->st_rdev = 0x880d;
422 else
423 tgt->st_rdev = host->st_rdev;
423 tgt->st_rdev = TheISA::htog(tgt->st_rdev);
424 tgt->st_rdev = htog(tgt->st_rdev);
425 tgt->st_size = host->st_size;
425 tgt->st_size = TheISA::htog(tgt->st_size);
426 tgt->st_size = htog(tgt->st_size);
427 tgt->st_atimeX = host->st_atime;
427 tgt->st_atimeX = TheISA::htog(tgt->st_atimeX);
428 tgt->st_atimeX = htog(tgt->st_atimeX);
429 tgt->st_mtimeX = host->st_mtime;
429 tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX);
430 tgt->st_mtimeX = htog(tgt->st_mtimeX);
431 tgt->st_ctimeX = host->st_ctime;
431 tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX);
432 tgt->st_ctimeX = htog(tgt->st_ctimeX);
433 // Force the block size to be 8k. This helps to ensure buffered io works
434 // consistently across different hosts.
435 tgt->st_blksize = 0x2000;
435 tgt->st_blksize = TheISA::htog(tgt->st_blksize);
436 tgt->st_blksize = htog(tgt->st_blksize);
437 tgt->st_blocks = host->st_blocks;
437 tgt->st_blocks = TheISA::htog(tgt->st_blocks);
438 tgt->st_blocks = htog(tgt->st_blocks);
439}
440
441// Same for stat64
442
443template <typename target_stat, typename host_stat64>
444static void
445convertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false)
446{
447 using namespace TheISA;
448
449 convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY);
450#if defined(STAT_HAVE_NSEC)
451 tgt->st_atime_nsec = host->st_atime_nsec;
451 tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec);
452 tgt->st_atime_nsec = htog(tgt->st_atime_nsec);
453 tgt->st_mtime_nsec = host->st_mtime_nsec;
453 tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec);
454 tgt->st_mtime_nsec = htog(tgt->st_mtime_nsec);
455 tgt->st_ctime_nsec = host->st_ctime_nsec;
455 tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec);
456 tgt->st_ctime_nsec = htog(tgt->st_ctime_nsec);
457#else
458 tgt->st_atime_nsec = 0;
459 tgt->st_mtime_nsec = 0;
460 tgt->st_ctime_nsec = 0;
461#endif
462}
463
464//Here are a couple convenience functions
465template<class OS>
466static void
466copyOutStatBuf(SETranslatingPortProxy* mem, Addr addr,
467copyOutStatBuf(TranslatingPort * mem, Addr addr,
468 hst_stat *host, bool fakeTTY = false)
469{
470 typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf;
471 tgt_stat_buf tgt(addr);
472 convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY);
473 tgt.copyOut(mem);
474}
475
476template<class OS>
477static void
477copyOutStat64Buf(SETranslatingPortProxy* mem, Addr addr,
478copyOutStat64Buf(TranslatingPort * mem, Addr addr,
479 hst_stat64 *host, bool fakeTTY = false)
480{
481 typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf;
482 tgt_stat_buf tgt(addr);
483 convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY);
484 tgt.copyOut(mem);
485}
486

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525template <class OS>
526SyscallReturn
527openFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
528 ThreadContext *tc)
529{
530 std::string path;
531
532 int index = 0;
532 if (!tc->getMemProxy()->tryReadString(path,
533 if (!tc->getMemPort()->tryReadString(path,
534 process->getSyscallArg(tc, index)))
535 return -EFAULT;
536
537 if (path == "/dev/sysdev0") {
538 // This is a memory-mapped high-resolution timer device on Alpha.
539 // We don't support it, so just punt.
540 warn("Ignoring open(%s, ...)\n", path);
541 return -ENOENT;

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589
590 int index = 0;
591 TypedBufferArg<typename OS::tgt_sysinfo>
592 sysinfo(process->getSyscallArg(tc, index));
593
594 sysinfo->uptime=seconds_since_epoch;
595 sysinfo->totalram=process->system->memSize();
596
596 sysinfo.copyOut(tc->getMemProxy());
597 sysinfo.copyOut(tc->getMemPort());
598
599 return 0;
600}
601
602/// Target chmod() handler.
603template <class OS>
604SyscallReturn
605chmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
606 ThreadContext *tc)
607{
608 std::string path;
609
610 int index = 0;
610 if (!tc->getMemProxy()->tryReadString(path,
611 if (!tc->getMemPort()->tryReadString(path,
612 process->getSyscallArg(tc, index))) {
613 return -EFAULT;
614 }
615
616 uint32_t mode = process->getSyscallArg(tc, index);
617 mode_t hostMode = 0;
618
619 // XXX translate mode flags via OS::something???

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673 (new_length % TheISA::VMPageSize != 0)) {
674 warn("mremap failing: arguments not page aligned");
675 return -EINVAL;
676 }
677
678 if (new_length > old_length) {
679 if ((start + old_length) == process->mmap_end) {
680 uint64_t diff = new_length - old_length;
680 process->allocateMem(process->mmap_end, diff);
681 process->pTable->allocate(process->mmap_end, diff);
682 process->mmap_end += diff;
683 return start;
684 } else {
685 // sys/mman.h defined MREMAP_MAYMOVE
686 if (!(flags & 1)) {
687 warn("can't remap here and MREMAP_MAYMOVE flag not set\n");
688 return -ENOMEM;
689 } else {
690 process->pTable->remap(start, old_length, process->mmap_end);
691 warn("mremapping to totally new vaddr %08p-%08p, adding %d\n",
692 process->mmap_end, process->mmap_end + new_length, new_length);
693 start = process->mmap_end;
694 // add on the remaining unallocated pages
694 process->allocateMem(start + old_length,
695 new_length - old_length);
695 process->pTable->allocate(start + old_length, new_length - old_length);
696 process->mmap_end += new_length;
697 warn("returning %08p as start\n", start);
698 return start;
699 }
700 }
701 } else {
702 process->pTable->unmap(start + new_length, old_length - new_length);
702 process->pTable->deallocate(start + new_length, old_length -
703 new_length);
704 return start;
705 }
706}
707
708/// Target stat() handler.
709template <class OS>
710SyscallReturn
711statFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
712 ThreadContext *tc)
713{
714 std::string path;
715
716 int index = 0;
716 if (!tc->getMemProxy()->tryReadString(path,
717 if (!tc->getMemPort()->tryReadString(path,
718 process->getSyscallArg(tc, index))) {
719 return -EFAULT;
720 }
721 Addr bufPtr = process->getSyscallArg(tc, index);
722
723 // Adjust path for current working directory
724 path = process->fullPath(path);
725
726 struct stat hostBuf;
727 int result = stat(path.c_str(), &hostBuf);
728
729 if (result < 0)
730 return -errno;
731
731 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
732 copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
733
734 return 0;
735}
736
737
738/// Target stat64() handler.
739template <class OS>
740SyscallReturn
741stat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
742 ThreadContext *tc)
743{
744 std::string path;
745
746 int index = 0;
746 if (!tc->getMemProxy()->tryReadString(path,
747 if (!tc->getMemPort()->tryReadString(path,
748 process->getSyscallArg(tc, index)))
749 return -EFAULT;
750 Addr bufPtr = process->getSyscallArg(tc, index);
751
752 // Adjust path for current working directory
753 path = process->fullPath(path);
754
755#if NO_STAT64
756 struct stat hostBuf;
757 int result = stat(path.c_str(), &hostBuf);
758#else
759 struct stat64 hostBuf;
760 int result = stat64(path.c_str(), &hostBuf);
761#endif
762
763 if (result < 0)
764 return -errno;
765
765 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
766 copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
767
768 return 0;
769}
770
771
772/// Target fstat64() handler.
773template <class OS>
774SyscallReturn

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789#else
790 struct stat64 hostBuf;
791 int result = fstat64(process->sim_fd(fd), &hostBuf);
792#endif
793
794 if (result < 0)
795 return -errno;
796
796 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1));
797 copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1));
798
799 return 0;
800}
801
802
803/// Target lstat() handler.
804template <class OS>
805SyscallReturn
806lstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
807 ThreadContext *tc)
808{
809 std::string path;
810
811 int index = 0;
811 if (!tc->getMemProxy()->tryReadString(path,
812 if (!tc->getMemPort()->tryReadString(path,
813 process->getSyscallArg(tc, index))) {
814 return -EFAULT;
815 }
816 Addr bufPtr = process->getSyscallArg(tc, index);
817
818 // Adjust path for current working directory
819 path = process->fullPath(path);
820
821 struct stat hostBuf;
822 int result = lstat(path.c_str(), &hostBuf);
823
824 if (result < 0)
825 return -errno;
826
826 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
827 copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
828
829 return 0;
830}
831
832/// Target lstat64() handler.
833template <class OS>
834SyscallReturn
835lstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
836 ThreadContext *tc)
837{
838 std::string path;
839
840 int index = 0;
840 if (!tc->getMemProxy()->tryReadString(path,
841 if (!tc->getMemPort()->tryReadString(path,
842 process->getSyscallArg(tc, index))) {
843 return -EFAULT;
844 }
845 Addr bufPtr = process->getSyscallArg(tc, index);
846
847 // Adjust path for current working directory
848 path = process->fullPath(path);
849
850#if NO_STAT64
851 struct stat hostBuf;
852 int result = lstat(path.c_str(), &hostBuf);
853#else
854 struct stat64 hostBuf;
855 int result = lstat64(path.c_str(), &hostBuf);
856#endif
857
858 if (result < 0)
859 return -errno;
860
860 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
861 copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
862
863 return 0;
864}
865
866/// Target fstat() handler.
867template <class OS>
868SyscallReturn
869fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,

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879 return -EBADF;
880
881 struct stat hostBuf;
882 int result = fstat(fd, &hostBuf);
883
884 if (result < 0)
885 return -errno;
886
886 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1));
887 copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1));
888
889 return 0;
890}
891
892
893/// Target statfs() handler.
894template <class OS>
895SyscallReturn
896statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
897 ThreadContext *tc)
898{
899 std::string path;
900
901 int index = 0;
901 if (!tc->getMemProxy()->tryReadString(path,
902 if (!tc->getMemPort()->tryReadString(path,
903 process->getSyscallArg(tc, index))) {
904 return -EFAULT;
905 }
906 Addr bufPtr = process->getSyscallArg(tc, index);
907
908 // Adjust path for current working directory
909 path = process->fullPath(path);
910
911 struct statfs hostBuf;
912 int result = statfs(path.c_str(), &hostBuf);
913
914 if (result < 0)
915 return -errno;
916
916 OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf);
917 OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf);
918
919 return 0;
920}
921
922
923/// Target fstatfs() handler.
924template <class OS>
925SyscallReturn

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934 return -EBADF;
935
936 struct statfs hostBuf;
937 int result = fstatfs(fd, &hostBuf);
938
939 if (result < 0)
940 return -errno;
941
941 OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf);
942 OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf);
943
944 return 0;
945}
946
947
948/// Target writev() handler.
949template <class OS>
950SyscallReturn
951writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
952 ThreadContext *tc)
953{
954 int index = 0;
955 int fd = process->getSyscallArg(tc, index);
956 if (fd < 0 || process->sim_fd(fd) < 0) {
957 // doesn't map to any simulator fd: not a valid target fd
958 return -EBADF;
959 }
960
960 SETranslatingPortProxy *p = tc->getMemProxy();
961 TranslatingPort *p = tc->getMemPort();
962 uint64_t tiov_base = process->getSyscallArg(tc, index);
963 size_t count = process->getSyscallArg(tc, index);
964 struct iovec hiov[count];
965 for (size_t i = 0; i < count; ++i) {
966 typename OS::tgt_iovec tiov;
967
968 p->readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec),
969 (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec));
969 hiov[i].iov_len = TheISA::gtoh(tiov.iov_len);
970 hiov[i].iov_len = gtoh(tiov.iov_len);
971 hiov[i].iov_base = new char [hiov[i].iov_len];
971 p->readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
972 p->readBlob(gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
973 hiov[i].iov_len);
974 }
975
976 int result = writev(process->sim_fd(fd), hiov, count);
977
978 for (size_t i = 0; i < count; ++i)
979 delete [] (char *)hiov[i].iov_base;
980

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1023 if ((start % TheISA::VMPageSize) != 0 ||
1024 (length % TheISA::VMPageSize) != 0) {
1025 warn("mmap failing: arguments not page-aligned: "
1026 "start 0x%x length 0x%x",
1027 start, length);
1028 return -EINVAL;
1029 }
1030
1030 // are we ok with clobbering existing mappings? only set this to
1031 // true if the user has been warned.
1032 bool clobber = false;
1033
1034 // try to use the caller-provided address if there is one
1035 bool use_provided_address = (start != 0);
1036
1037 if (use_provided_address) {
1038 // check to see if the desired address is already in use
1039 if (!p->pTable->isUnmapped(start, length)) {
1040 // there are existing mappings in the desired range
1041 // whether we clobber them or not depends on whether the caller
1042 // specified MAP_FIXED
1043 if (flags & OS::TGT_MAP_FIXED) {
1044 // MAP_FIXED specified: clobber existing mappings
1045 warn("mmap: MAP_FIXED at 0x%x overwrites existing mappings\n",
1046 start);
1047 clobber = true;
1048 } else {
1049 // MAP_FIXED not specified: ignore suggested start address
1050 warn("mmap: ignoring suggested map address 0x%x\n", start);
1051 use_provided_address = false;
1052 }
1053 }
1031 if (start != 0) {
1032 warn("mmap: ignoring suggested map address 0x%x, using 0x%x",
1033 start, p->mmap_end);
1034 }
1035
1056 if (!use_provided_address) {
1057 // no address provided, or provided address unusable:
1058 // pick next address from our "mmap region"
1059 if (OS::mmapGrowsDown()) {
1060 start = p->mmap_end - length;
1061 p->mmap_end = start;
1062 } else {
1063 start = p->mmap_end;
1064 p->mmap_end += length;
1065 }
1036 // pick next address from our "mmap region"
1037 if (OS::mmapGrowsDown()) {
1038 start = p->mmap_end - length;
1039 p->mmap_end = start;
1040 } else {
1041 start = p->mmap_end;
1042 p->mmap_end += length;
1043 }
1044 p->pTable->allocate(start, length);
1045
1068 p->allocateMem(start, length, clobber);
1069
1046 return start;
1047}
1048
1049/// Target getrlimit() handler.
1050template <class OS>
1051SyscallReturn
1052getrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1053 ThreadContext *tc)
1054{
1055 int index = 0;
1056 unsigned resource = process->getSyscallArg(tc, index);
1057 TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index));
1058
1059 switch (resource) {
1060 case OS::TGT_RLIMIT_STACK:
1061 // max stack size in bytes: make up a number (8MB for now)
1062 rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024;
1087 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
1088 rlp->rlim_max = TheISA::htog(rlp->rlim_max);
1063 rlp->rlim_cur = htog(rlp->rlim_cur);
1064 rlp->rlim_max = htog(rlp->rlim_max);
1065 break;
1066
1067 case OS::TGT_RLIMIT_DATA:
1068 // max data segment size in bytes: make up a number
1069 rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024;
1094 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
1095 rlp->rlim_max = TheISA::htog(rlp->rlim_max);
1070 rlp->rlim_cur = htog(rlp->rlim_cur);
1071 rlp->rlim_max = htog(rlp->rlim_max);
1072 break;
1073
1074 default:
1075 std::cerr << "getrlimitFunc: unimplemented resource " << resource
1076 << std::endl;
1077 abort();
1078 break;
1079 }
1080
1105 rlp.copyOut(tc->getMemProxy());
1081 rlp.copyOut(tc->getMemPort());
1082 return 0;
1083}
1084
1085/// Target gettimeofday() handler.
1086template <class OS>
1087SyscallReturn
1088gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1089 ThreadContext *tc)
1090{
1091 int index = 0;
1092 TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index));
1093
1094 getElapsedTime(tp->tv_sec, tp->tv_usec);
1095 tp->tv_sec += seconds_since_epoch;
1096 tp->tv_sec = TheISA::htog(tp->tv_sec);
1097 tp->tv_usec = TheISA::htog(tp->tv_usec);
1098
1123 tp.copyOut(tc->getMemProxy());
1099 tp.copyOut(tc->getMemPort());
1100
1101 return 0;
1102}
1103
1104
1105/// Target utimes() handler.
1106template <class OS>
1107SyscallReturn
1108utimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1109 ThreadContext *tc)
1110{
1111 std::string path;
1112
1113 int index = 0;
1138 if (!tc->getMemProxy()->tryReadString(path,
1114 if (!tc->getMemPort()->tryReadString(path,
1115 process->getSyscallArg(tc, index))) {
1116 return -EFAULT;
1117 }
1118
1119 TypedBufferArg<typename OS::timeval [2]>
1120 tp(process->getSyscallArg(tc, index));
1145 tp.copyIn(tc->getMemProxy());
1121 tp.copyIn(tc->getMemPort());
1122
1123 struct timeval hostTimeval[2];
1124 for (int i = 0; i < 2; ++i)
1125 {
1150 hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec);
1151 hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec);
1126 hostTimeval[i].tv_sec = gtoh((*tp)[i].tv_sec);
1127 hostTimeval[i].tv_usec = gtoh((*tp)[i].tv_usec);
1128 }
1129
1130 // Adjust path for current working directory
1131 path = process->fullPath(path);
1132
1133 int result = utimes(path.c_str(), hostTimeval);
1134
1135 if (result < 0)

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1164 rup->ru_msgrcv = 0;
1165 rup->ru_nsignals = 0;
1166 rup->ru_nvcsw = 0;
1167 rup->ru_nivcsw = 0;
1168
1169 switch (who) {
1170 case OS::TGT_RUSAGE_SELF:
1171 getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
1196 rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec);
1197 rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec);
1172 rup->ru_utime.tv_sec = htog(rup->ru_utime.tv_sec);
1173 rup->ru_utime.tv_usec = htog(rup->ru_utime.tv_usec);
1174 break;
1175
1176 case OS::TGT_RUSAGE_CHILDREN:
1177 // do nothing. We have no child processes, so they take no time.
1178 break;
1179
1180 default:
1181 // don't really handle THREAD or CHILDREN, but just warn and
1182 // plow ahead
1183 warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
1184 who);
1185 }
1186
1211 rup.copyOut(tc->getMemProxy());
1187 rup.copyOut(tc->getMemPort());
1188
1189 return 0;
1190}
1191
1192/// Target times() function.
1193template <class OS>
1194SyscallReturn
1195timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,

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1201 // Fill in the time structure (in clocks)
1202 int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s;
1203 bufp->tms_utime = clocks;
1204 bufp->tms_stime = 0;
1205 bufp->tms_cutime = 0;
1206 bufp->tms_cstime = 0;
1207
1208 // Convert to host endianness
1233 bufp->tms_utime = TheISA::htog(bufp->tms_utime);
1209 bufp->tms_utime = htog(bufp->tms_utime);
1210
1211 // Write back
1236 bufp.copyOut(tc->getMemProxy());
1212 bufp.copyOut(tc->getMemPort());
1213
1214 // Return clock ticks since system boot
1215 return clocks;
1216}
1217
1218/// Target time() function.
1219template <class OS>
1220SyscallReturn
1221timeFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1222 ThreadContext *tc)
1223{
1224 typename OS::time_t sec, usec;
1225 getElapsedTime(sec, usec);
1226 sec += seconds_since_epoch;
1227
1228 int index = 0;
1229 Addr taddr = (Addr)process->getSyscallArg(tc, index);
1230 if(taddr != 0) {
1231 typename OS::time_t t = sec;
1256 t = TheISA::htog(t);
1257 SETranslatingPortProxy *p = tc->getMemProxy();
1232 t = htog(t);
1233 TranslatingPort *p = tc->getMemPort();
1234 p->writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
1235 }
1236 return sec;
1237}
1238
1239
1240#endif // __SIM_SYSCALL_EMUL_HH__