EmulatorPkg: Apply uncrustify changes

[mirror_edk2.git] / EmulatorPkg / Unix / Host / EmuThunk.c

/*++ @file\r
  Since the SEC is the only program in our emulation we\r
  must use a UEFI/PI mechanism to export APIs to other modules.\r
  This is the role of the EFI_EMU_THUNK_PROTOCOL.\r
\r
  The mUnixThunkTable exists so that a change to EFI_EMU_THUNK_PROTOCOL\r
  will cause an error in initializing the array if all the member functions\r
  are not added. It looks like adding a element to end and not initializing\r
  it may cause the table to be initialized with the members at the end being\r
  set to zero. This is bad as jumping to zero will crash.\r
\r
Copyright (c) 2004 - 2019, Intel Corporation. All rights reserved.<BR>\r
Portions copyright (c) 2008 - 2011, Apple Inc. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "Host.h"\r
\r
#ifdef __APPLE__\r
#define DebugAssert  _Mangle__DebugAssert\r
\r
  #include <assert.h>\r
  #include <CoreServices/CoreServices.h>\r
  #include <mach/mach.h>\r
  #include <mach/mach_time.h>\r
\r
  #undef DebugAssert\r
#endif\r
\r
int             settimer_initialized;\r
struct timeval  settimer_timeval;\r
UINTN           settimer_callback = 0;\r
\r
BOOLEAN  gEmulatorInterruptEnabled = FALSE;\r
\r
UINTN\r
SecWriteStdErr (\r
  IN UINT8  *Buffer,\r
  IN UINTN  NumberOfBytes\r
  )\r
{\r
  ssize_t  Return;\r
\r
  Return = write (STDERR_FILENO, (const void *)Buffer, (size_t)NumberOfBytes);\r
\r
  return (Return == -1) ? 0 : Return;\r
}\r
\r
EFI_STATUS\r
SecConfigStdIn (\r
  VOID\r
  )\r
{\r
  struct termios  tty;\r
\r
  //\r
  // Need to turn off line buffering, ECHO, and make it unbuffered.\r
  //\r
  tcgetattr (STDIN_FILENO, &tty);\r
  tty.c_lflag &= ~(ICANON | ECHO);\r
  tcsetattr (STDIN_FILENO, TCSANOW, &tty);\r
\r
  //  setvbuf (STDIN_FILENO, NULL, _IONBF, 0);\r
\r
  // now ioctl FIONREAD will do what we need\r
  return EFI_SUCCESS;\r
}\r
\r
UINTN\r
SecWriteStdOut (\r
  IN UINT8  *Buffer,\r
  IN UINTN  NumberOfBytes\r
  )\r
{\r
  ssize_t  Return;\r
\r
  Return = write (STDOUT_FILENO, (const void *)Buffer, (size_t)NumberOfBytes);\r
\r
  return (Return == -1) ? 0 : Return;\r
}\r
\r
UINTN\r
SecReadStdIn (\r
  IN UINT8  *Buffer,\r
  IN UINTN  NumberOfBytes\r
  )\r
{\r
  ssize_t  Return;\r
\r
  Return = read (STDIN_FILENO, Buffer, (size_t)NumberOfBytes);\r
\r
  return (Return == -1) ? 0 : Return;\r
}\r
\r
BOOLEAN\r
SecPollStdIn (\r
  VOID\r
  )\r
{\r
  int  Result;\r
  int  Bytes;\r
\r
  Result = ioctl (STDIN_FILENO, FIONREAD, &Bytes);\r
  if (Result == -1) {\r
    return FALSE;\r
  }\r
\r
  return (BOOLEAN)(Bytes > 0);\r
}\r
\r
VOID *\r
SecMalloc (\r
  IN  UINTN  Size\r
  )\r
{\r
  return malloc ((size_t)Size);\r
}\r
\r
VOID *\r
SecValloc (\r
  IN  UINTN  Size\r
  )\r
{\r
  return valloc ((size_t)Size);\r
}\r
\r
BOOLEAN\r
SecFree (\r
  IN  VOID  *Ptr\r
  )\r
{\r
  if (EfiSystemMemoryRange (Ptr)) {\r
    // If an address range is in the EFI memory map it was alloced via EFI.\r
    // So don't free those ranges and let the caller know.\r
    return FALSE;\r
  }\r
\r
  free (Ptr);\r
  return TRUE;\r
}\r
\r
void\r
settimer_handler (\r
  int  sig\r
  )\r
{\r
  struct timeval  timeval;\r
  UINT64          delta;\r
\r
  gettimeofday (&timeval, NULL);\r
  delta = ((UINT64)timeval.tv_sec * 1000) + (timeval.tv_usec / 1000)\r
          - ((UINT64)settimer_timeval.tv_sec * 1000)\r
          - (settimer_timeval.tv_usec / 1000);\r
  settimer_timeval = timeval;\r
\r
  if (settimer_callback) {\r
    ReverseGasketUint64 (settimer_callback, delta);\r
  }\r
}\r
\r
VOID\r
SecSetTimer (\r
  IN  UINT64                  PeriodMs,\r
  IN  EMU_SET_TIMER_CALLBACK  CallBack\r
  )\r
{\r
  struct itimerval  timerval;\r
  UINT32            remainder;\r
\r
  if (!settimer_initialized) {\r
    struct sigaction  act;\r
\r
    settimer_initialized = 1;\r
    act.sa_handler       = settimer_handler;\r
    act.sa_flags         = 0;\r
    sigemptyset (&act.sa_mask);\r
    gEmulatorInterruptEnabled = TRUE;\r
    if (sigaction (SIGALRM, &act, NULL) != 0) {\r
      printf ("SetTimer: sigaction error %s\n", strerror (errno));\r
    }\r
\r
    if (gettimeofday (&settimer_timeval, NULL) != 0) {\r
      printf ("SetTimer: gettimeofday error %s\n", strerror (errno));\r
    }\r
  }\r
\r
  timerval.it_value.tv_sec = DivU64x32 (PeriodMs, 1000);\r
  DivU64x32Remainder (PeriodMs, 1000, &remainder);\r
  timerval.it_value.tv_usec = remainder * 1000;\r
  timerval.it_value.tv_sec  = DivU64x32 (PeriodMs, 1000);\r
  timerval.it_interval      = timerval.it_value;\r
\r
  if (setitimer (ITIMER_REAL, &timerval, NULL) != 0) {\r
    printf ("SetTimer: setitimer error %s\n", strerror (errno));\r
  }\r
\r
  settimer_callback = (UINTN)CallBack;\r
}\r
\r
VOID\r
SecEnableInterrupt (\r
  VOID\r
  )\r
{\r
  sigset_t  sigset;\r
\r
  gEmulatorInterruptEnabled = TRUE;\r
  // Since SetTimer() uses SIGALRM we emulate turning on and off interrupts\r
  // by enabling/disabling SIGALRM.\r
  sigemptyset (&sigset);\r
  sigaddset (&sigset, SIGALRM);\r
  pthread_sigmask (SIG_UNBLOCK, &sigset, NULL);\r
}\r
\r
VOID\r
SecDisableInterrupt (\r
  VOID\r
  )\r
{\r
  sigset_t  sigset;\r
\r
  // Since SetTimer() uses SIGALRM we emulate turning on and off interrupts\r
  // by enabling/disabling SIGALRM.\r
  sigemptyset (&sigset);\r
  sigaddset (&sigset, SIGALRM);\r
  pthread_sigmask (SIG_BLOCK, &sigset, NULL);\r
  gEmulatorInterruptEnabled = FALSE;\r
}\r
\r
BOOLEAN\r
SecInterruptEanbled (\r
  void\r
  )\r
{\r
  return gEmulatorInterruptEnabled;\r
}\r
\r
UINT64\r
QueryPerformanceFrequency (\r
  VOID\r
  )\r
{\r
  // Hard code to nanoseconds\r
  return 1000000000ULL;\r
}\r
\r
UINT64\r
QueryPerformanceCounter (\r
  VOID\r
  )\r
{\r
 #if __APPLE__\r
  UINT64                            Start;\r
  static mach_timebase_info_data_t  sTimebaseInfo;\r
\r
  Start = mach_absolute_time ();\r
\r
  // Convert to nanoseconds.\r
\r
  // If this is the first time we've run, get the timebase.\r
  // We can use denom == 0 to indicate that sTimebaseInfo is\r
  // uninitialised because it makes no sense to have a zero\r
  // denominator is a fraction.\r
\r
  if ( sTimebaseInfo.denom == 0 ) {\r
    (void)mach_timebase_info (&sTimebaseInfo);\r
  }\r
\r
  // Do the maths. We hope that the multiplication doesn't\r
  // overflow; the price you pay for working in fixed point.\r
\r
  return (Start * sTimebaseInfo.numer) / sTimebaseInfo.denom;\r
 #else\r
  // Need to figure out what to do for Linux?\r
  return 0;\r
 #endif\r
}\r
\r
VOID\r
SecSleep (\r
  IN  UINT64  Nanoseconds\r
  )\r
{\r
  struct timespec  rq, rm;\r
  struct timeval   start, end;\r
  unsigned long    MicroSec;\r
\r
  rq.tv_sec  = DivU64x32 (Nanoseconds, 1000000000);\r
  rq.tv_nsec = ModU64x32 (Nanoseconds, 1000000000);\r
\r
  //\r
  // nanosleep gets interrupted by our timer tic.\r
  // we need to track wall clock time or we will stall for way too long\r
  //\r
  gettimeofday (&start, NULL);\r
  end.tv_sec  = start.tv_sec + rq.tv_sec;\r
  MicroSec    = (start.tv_usec + rq.tv_nsec/1000);\r
  end.tv_usec = MicroSec % 1000000;\r
  if (MicroSec > 1000000) {\r
    end.tv_sec++;\r
  }\r
\r
  while (nanosleep (&rq, &rm) == -1) {\r
    if (errno != EINTR) {\r
      break;\r
    }\r
\r
    gettimeofday (&start, NULL);\r
    if (start.tv_sec > end.tv_sec) {\r
      break;\r
    }\r
\r
    if ((start.tv_sec == end.tv_sec) && (start.tv_usec > end.tv_usec)) {\r
      break;\r
    }\r
\r
    rq = rm;\r
  }\r
}\r
\r
VOID\r
SecCpuSleep (\r
  VOID\r
  )\r
{\r
  struct timespec  rq, rm;\r
\r
  // nanosleep gets interrupted by the timer tic\r
  rq.tv_sec  = 1;\r
  rq.tv_nsec = 0;\r
\r
  nanosleep (&rq, &rm);\r
}\r
\r
VOID\r
SecExit (\r
  UINTN  Status\r
  )\r
{\r
  exit (Status);\r
}\r
\r
VOID\r
SecGetTime (\r
  OUT  EFI_TIME              *Time,\r
  OUT EFI_TIME_CAPABILITIES  *Capabilities OPTIONAL\r
  )\r
{\r
  struct tm  *tm;\r
  time_t     t;\r
\r
  t  = time (NULL);\r
  tm = localtime (&t);\r
\r
  Time->Year       = 1900 + tm->tm_year;\r
  Time->Month      = tm->tm_mon + 1;\r
  Time->Day        = tm->tm_mday;\r
  Time->Hour       = tm->tm_hour;\r
  Time->Minute     = tm->tm_min;\r
  Time->Second     = tm->tm_sec;\r
  Time->Nanosecond = 0;\r
  Time->TimeZone   = timezone / 60;\r
  Time->Daylight   = (daylight ? EFI_TIME_ADJUST_DAYLIGHT : 0)\r
                     | (tm->tm_isdst > 0 ? EFI_TIME_IN_DAYLIGHT : 0);\r
\r
  if (Capabilities != NULL) {\r
    Capabilities->Resolution = 1;\r
    Capabilities->Accuracy   = 50000000;\r
    Capabilities->SetsToZero = FALSE;\r
  }\r
}\r
\r
VOID\r
SecSetTime (\r
  IN  EFI_TIME  *Time\r
  )\r
{\r
  // Don't change the time on the system\r
  // We could save delta to localtime() and have SecGetTime adjust return values?\r
  return;\r
}\r
\r
EFI_STATUS\r
SecGetNextProtocol (\r
  IN  BOOLEAN                EmuBusDriver,\r
  OUT EMU_IO_THUNK_PROTOCOL  **Instance   OPTIONAL\r
  )\r
{\r
  return GetNextThunkProtocol (EmuBusDriver, Instance);\r
}\r
\r
EMU_THUNK_PROTOCOL  gEmuThunkProtocol = {\r
  GasketSecWriteStdErr,\r
  GasketSecConfigStdIn,\r
  GasketSecWriteStdOut,\r
  GasketSecReadStdIn,\r
  GasketSecPollStdIn,\r
  GasketSecMalloc,\r
  GasketSecValloc,\r
  GasketSecFree,\r
  GasketSecPeCoffGetEntryPoint,\r
  GasketSecPeCoffRelocateImageExtraAction,\r
  GasketSecPeCoffUnloadImageExtraAction,\r
  GasketSecEnableInterrupt,\r
  GasketSecDisableInterrupt,\r
  GasketQueryPerformanceFrequency,\r
  GasketQueryPerformanceCounter,\r
  GasketSecSleep,\r
  GasketSecCpuSleep,\r
  GasketSecExit,\r
  GasketSecGetTime,\r
  GasketSecSetTime,\r
  GasketSecSetTimer,\r
  GasketSecGetNextProtocol\r
};\r
\r
VOID\r
SecInitThunkProtocol (\r
  VOID\r
  )\r
{\r
  // timezone and daylight lib globals depend on tzset be called 1st.\r
  tzset ();\r
}\r