syscall_emul.hh (8737:770ccf3af571) syscall_emul.hh (8766:b0773af78423)
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"
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"
66#include "sim/byteswap.hh"
67#include "sim/process.hh"
68#include "sim/syscallreturn.hh"
68#include "sim/system.hh"
69
70///
71/// System call descriptor.
72///
73class SyscallDesc {
74
75 public:

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

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395convertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false)
396{
397 using namespace TheISA;
398
399 if (fakeTTY)
400 tgt->st_dev = 0xA;
401 else
402 tgt->st_dev = host->st_dev;
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);
404 tgt->st_ino = host->st_ino;
405 tgt->st_ino = host->st_ino;
405 tgt->st_ino = TheISA::htog(tgt->st_ino);
406 tgt->st_ino = htog(tgt->st_ino);
406 tgt->st_mode = host->st_mode;
407 if (fakeTTY) {
408 // Claim to be a character device
409 tgt->st_mode &= ~S_IFMT; // Clear S_IFMT
410 tgt->st_mode |= S_IFCHR; // Set S_IFCHR
411 }
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);
413 tgt->st_nlink = host->st_nlink;
414 tgt->st_nlink = host->st_nlink;
414 tgt->st_nlink = TheISA::htog(tgt->st_nlink);
415 tgt->st_nlink = htog(tgt->st_nlink);
415 tgt->st_uid = host->st_uid;
416 tgt->st_uid = host->st_uid;
416 tgt->st_uid = TheISA::htog(tgt->st_uid);
417 tgt->st_uid = htog(tgt->st_uid);
417 tgt->st_gid = host->st_gid;
418 tgt->st_gid = host->st_gid;
418 tgt->st_gid = TheISA::htog(tgt->st_gid);
419 tgt->st_gid = htog(tgt->st_gid);
419 if (fakeTTY)
420 tgt->st_rdev = 0x880d;
421 else
422 tgt->st_rdev = host->st_rdev;
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);
424 tgt->st_size = host->st_size;
425 tgt->st_size = host->st_size;
425 tgt->st_size = TheISA::htog(tgt->st_size);
426 tgt->st_size = htog(tgt->st_size);
426 tgt->st_atimeX = host->st_atime;
427 tgt->st_atimeX = host->st_atime;
427 tgt->st_atimeX = TheISA::htog(tgt->st_atimeX);
428 tgt->st_atimeX = htog(tgt->st_atimeX);
428 tgt->st_mtimeX = host->st_mtime;
429 tgt->st_mtimeX = host->st_mtime;
429 tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX);
430 tgt->st_mtimeX = htog(tgt->st_mtimeX);
430 tgt->st_ctimeX = host->st_ctime;
431 tgt->st_ctimeX = host->st_ctime;
431 tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX);
432 tgt->st_ctimeX = htog(tgt->st_ctimeX);
432 // Force the block size to be 8k. This helps to ensure buffered io works
433 // consistently across different hosts.
434 tgt->st_blksize = 0x2000;
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);
436 tgt->st_blocks = host->st_blocks;
437 tgt->st_blocks = host->st_blocks;
437 tgt->st_blocks = TheISA::htog(tgt->st_blocks);
438 tgt->st_blocks = htog(tgt->st_blocks);
438}
439
440// Same for stat64
441
442template <typename target_stat, typename host_stat64>
443static void
444convertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false)
445{
446 using namespace TheISA;
447
448 convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY);
449#if defined(STAT_HAVE_NSEC)
450 tgt->st_atime_nsec = host->st_atime_nsec;
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);
452 tgt->st_mtime_nsec = host->st_mtime_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);
454 tgt->st_ctime_nsec = host->st_ctime_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);
456#else
457 tgt->st_atime_nsec = 0;
458 tgt->st_mtime_nsec = 0;
459 tgt->st_ctime_nsec = 0;
460#endif
461}
462
463//Here are a couple convenience functions
464template<class OS>
465static void
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,
467 hst_stat *host, bool fakeTTY = false)
468{
469 typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf;
470 tgt_stat_buf tgt(addr);
471 convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY);
472 tgt.copyOut(mem);
473}
474
475template<class OS>
476static void
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,
478 hst_stat64 *host, bool fakeTTY = false)
479{
480 typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf;
481 tgt_stat_buf tgt(addr);
482 convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY);
483 tgt.copyOut(mem);
484}
485

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524template <class OS>
525SyscallReturn
526openFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
527 ThreadContext *tc)
528{
529 std::string path;
530
531 int index = 0;
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,
533 process->getSyscallArg(tc, index)))
534 return -EFAULT;
535
536 if (path == "/dev/sysdev0") {
537 // This is a memory-mapped high-resolution timer device on Alpha.
538 // We don't support it, so just punt.
539 warn("Ignoring open(%s, ...)\n", path);
540 return -ENOENT;

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588
589 int index = 0;
590 TypedBufferArg<typename OS::tgt_sysinfo>
591 sysinfo(process->getSyscallArg(tc, index));
592
593 sysinfo->uptime=seconds_since_epoch;
594 sysinfo->totalram=process->system->memSize();
595
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());
597
598 return 0;
599}
600
601/// Target chmod() handler.
602template <class OS>
603SyscallReturn
604chmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
605 ThreadContext *tc)
606{
607 std::string path;
608
609 int index = 0;
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,
611 process->getSyscallArg(tc, index))) {
612 return -EFAULT;
613 }
614
615 uint32_t mode = process->getSyscallArg(tc, index);
616 mode_t hostMode = 0;
617
618 // XXX translate mode flags via OS::something???

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

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

--- 9 unchanged lines hidden (view full) ---

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

--- 8 unchanged lines hidden (view full) ---

933 return -EBADF;
934
935 struct statfs hostBuf;
936 int result = fstatfs(fd, &hostBuf);
937
938 if (result < 0)
939 return -errno;
940
918
919 return 0;
920}
921
922
923/// Target fstatfs() handler.
924template <class OS>
925SyscallReturn

--- 8 unchanged lines hidden (view full) ---

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

--- 42 unchanged lines hidden (view full) ---

1022 if ((start % TheISA::VMPageSize) != 0 ||
1023 (length % TheISA::VMPageSize) != 0) {
1024 warn("mmap failing: arguments not page-aligned: "
1025 "start 0x%x length 0x%x",
1026 start, length);
1027 return -EINVAL;
1028 }
1029
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

--- 42 unchanged lines hidden (view full) ---

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);
1054 }
1055
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;
1066 }
1043 }
1044 p->pTable->allocate(start, length);
1067
1045
1068 p->allocateMem(start, length, clobber);
1069
1070 return start;
1071}
1072
1073/// Target getrlimit() handler.
1074template <class OS>
1075SyscallReturn
1076getrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1077 ThreadContext *tc)
1078{
1079 int index = 0;
1080 unsigned resource = process->getSyscallArg(tc, index);
1081 TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index));
1082
1083 switch (resource) {
1084 case OS::TGT_RLIMIT_STACK:
1085 // max stack size in bytes: make up a number (8MB for now)
1086 rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024;
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);
1089 break;
1090
1091 case OS::TGT_RLIMIT_DATA:
1092 // max data segment size in bytes: make up a number
1093 rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024;
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);
1096 break;
1097
1098 default:
1099 std::cerr << "getrlimitFunc: unimplemented resource " << resource
1100 << std::endl;
1101 abort();
1102 break;
1103 }
1104
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());
1106 return 0;
1107}
1108
1109/// Target gettimeofday() handler.
1110template <class OS>
1111SyscallReturn
1112gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1113 ThreadContext *tc)
1114{
1115 int index = 0;
1116 TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index));
1117
1118 getElapsedTime(tp->tv_sec, tp->tv_usec);
1119 tp->tv_sec += seconds_since_epoch;
1120 tp->tv_sec = TheISA::htog(tp->tv_sec);
1121 tp->tv_usec = TheISA::htog(tp->tv_usec);
1122
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());
1124
1125 return 0;
1126}
1127
1128
1129/// Target utimes() handler.
1130template <class OS>
1131SyscallReturn
1132utimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1133 ThreadContext *tc)
1134{
1135 std::string path;
1136
1137 int index = 0;
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,
1139 process->getSyscallArg(tc, index))) {
1140 return -EFAULT;
1141 }
1142
1143 TypedBufferArg<typename OS::timeval [2]>
1144 tp(process->getSyscallArg(tc, index));
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());
1146
1147 struct timeval hostTimeval[2];
1148 for (int i = 0; i < 2; ++i)
1149 {
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);
1152 }
1153
1154 // Adjust path for current working directory
1155 path = process->fullPath(path);
1156
1157 int result = utimes(path.c_str(), hostTimeval);
1158
1159 if (result < 0)

--- 28 unchanged lines hidden (view full) ---

1188 rup->ru_msgrcv = 0;
1189 rup->ru_nsignals = 0;
1190 rup->ru_nvcsw = 0;
1191 rup->ru_nivcsw = 0;
1192
1193 switch (who) {
1194 case OS::TGT_RUSAGE_SELF:
1195 getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.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)

--- 28 unchanged lines hidden (view full) ---

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);
1198 break;
1199
1200 case OS::TGT_RUSAGE_CHILDREN:
1201 // do nothing. We have no child processes, so they take no time.
1202 break;
1203
1204 default:
1205 // don't really handle THREAD or CHILDREN, but just warn and
1206 // plow ahead
1207 warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
1208 who);
1209 }
1210
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());
1212
1213 return 0;
1214}
1215
1216/// Target times() function.
1217template <class OS>
1218SyscallReturn
1219timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,

--- 5 unchanged lines hidden (view full) ---

1225 // Fill in the time structure (in clocks)
1226 int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s;
1227 bufp->tms_utime = clocks;
1228 bufp->tms_stime = 0;
1229 bufp->tms_cutime = 0;
1230 bufp->tms_cstime = 0;
1231
1232 // Convert to host endianness
1188
1189 return 0;
1190}
1191
1192/// Target times() function.
1193template <class OS>
1194SyscallReturn
1195timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,

--- 5 unchanged lines hidden (view full) ---

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);
1234
1235 // Write back
1210
1211 // Write back
1236 bufp.copyOut(tc->getMemProxy());
1212 bufp.copyOut(tc->getMemPort());
1237
1238 // Return clock ticks since system boot
1239 return clocks;
1240}
1241
1242/// Target time() function.
1243template <class OS>
1244SyscallReturn
1245timeFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1246 ThreadContext *tc)
1247{
1248 typename OS::time_t sec, usec;
1249 getElapsedTime(sec, usec);
1250 sec += seconds_since_epoch;
1251
1252 int index = 0;
1253 Addr taddr = (Addr)process->getSyscallArg(tc, index);
1254 if(taddr != 0) {
1255 typename OS::time_t t = sec;
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();
1258 p->writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
1259 }
1260 return sec;
1261}
1262
1263
1264#endif // __SIM_SYSCALL_EMUL_HH__
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__