Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 250 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c b/REORG.TODO/sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c
new file mode 100644
index 0000000000..a0349790dc
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c
@@ -0,0 +1,250 @@
+/* Get frequency of the system processor.  sparc64 version.
+   Copyright (C) 2001-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ctype.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <sys/ioctl.h>
+#include <asm/openpromio.h>
+
+static hp_timing_t
+__get_clockfreq_via_cpuinfo (void)
+{
+  hp_timing_t result;
+  int fd;
+
+  result = 0;
+
+  fd = __open ("/proc/cpuinfo", O_RDONLY);
+  if (fd != -1)
+    {
+      char buf[8192];
+      ssize_t n;
+
+      n = __read (fd, buf, sizeof buf);
+      if (n > 0)
+	{
+	  char *mhz = memmem (buf, n, "Cpu0ClkTck", 7);
+
+	  if (mhz != NULL)
+	    {
+	      char *endp = buf + n;
+
+	      /* Search for the beginning of the string.  */
+	      while (mhz < endp
+		     && (*mhz < '0' || *mhz > '9')
+		     && (*mhz < 'a' || *mhz > 'f')
+		     && *mhz != '\n')
+		++mhz;
+
+	      while (mhz < endp && *mhz != '\n')
+		{
+		  if ((*mhz >= '0' && *mhz <= '9') ||
+		      (*mhz >= 'a' && *mhz <= 'f'))
+		    {
+		      result <<= 4;
+		      if (*mhz >= '0' && *mhz <= '9')
+			result += *mhz - '0';
+		      else
+			result += (*mhz - 'a') + 10;
+		    }
+		  ++mhz;
+		}
+	    }
+	}
+
+      __close (fd);
+    }
+
+  return result;
+}
+
+static hp_timing_t
+__get_clockfreq_via_proc_openprom (void)
+{
+  hp_timing_t result;
+  int obp_fd;
+
+  result = 0;
+
+  obp_fd = __open ("/proc/openprom", O_RDONLY);
+  if (obp_fd != -1)
+    {
+      unsigned long int buf[4096 / sizeof (unsigned long int)];
+      struct dirent *dirp = (struct dirent *) buf;
+      ssize_t len;
+
+      while ((len = __getdents (obp_fd, (char *) dirp, sizeof (buf))) > 0)
+	{
+	  struct dirent *this_dirp = dirp;
+
+	  while (len > 0)
+	    {
+	      char node[strlen ("/proc/openprom/")
+			+ _D_ALLOC_NAMLEN (this_dirp)
+			+ strlen ("/clock-frequency")];
+	      char *prop;
+	      int fd;
+
+	      /* Note that
+		   strlen("/clock-frequency") > strlen("/device_type")
+	      */
+	      __stpcpy (prop = __stpcpy (__stpcpy (node, "/proc/openprom/"),
+					 this_dirp->d_name),
+			"/device_type");
+	      fd = __open (node, O_RDONLY);
+	      if (fd != -1)
+		{
+		  char type_string[128];
+		  int ret;
+
+		  ret = __read (fd, type_string, sizeof (type_string));
+		  if (ret > 0 && strncmp (type_string, "'cpu'", 5) == 0)
+		    {
+		      int clkfreq_fd;
+
+		      __stpcpy (prop, "/clock-frequency");
+		      clkfreq_fd = __open (node, O_RDONLY);
+		      if (clkfreq_fd != -1)
+			{
+			  if (__read (clkfreq_fd, type_string,
+				      sizeof (type_string)) > 0)
+			    result = (hp_timing_t)
+			      strtoumax (type_string, NULL, 16);
+			  __close (clkfreq_fd);
+			}
+		    }
+		  __close (fd);
+		}
+
+	      if (result != 0)
+		break;
+
+	      len -= this_dirp->d_reclen;
+	      this_dirp = (struct dirent *)
+		((char *) this_dirp + this_dirp->d_reclen);
+	    }
+	  if (result != 0)
+	    break;
+	}
+      __close (obp_fd);
+    }
+
+  return result;
+}
+
+static void set_obp_int (struct openpromio *op, int val)
+{
+  char *cp = op->oprom_array;
+  int *ip = (int *) cp;
+
+  *ip = val;
+}
+
+static int get_obp_int (struct openpromio *op)
+{
+  char *cp = op->oprom_array;
+  int *ip = (int *) cp;
+
+  return *ip;
+}
+
+static hp_timing_t
+__get_clockfreq_via_dev_openprom (void)
+{
+  hp_timing_t result;
+  int obp_dev_fd;
+
+  result = 0;
+
+  obp_dev_fd = __open ("/dev/openprom", O_RDONLY);
+  if (obp_dev_fd != -1)
+    {
+      char obp_buf[8192];
+      struct openpromio *obp_cmd = (struct openpromio *)obp_buf;
+      int ret;
+
+      obp_cmd->oprom_size =
+	sizeof (obp_buf) - sizeof (unsigned int);
+      set_obp_int (obp_cmd, 0);
+      ret = __ioctl (obp_dev_fd, OPROMCHILD, (char *) obp_cmd);
+      if (ret == 0)
+	{
+	  int cur_node = get_obp_int (obp_cmd);
+
+	  while (cur_node != 0 && cur_node != -1)
+	    {
+	      obp_cmd->oprom_size = sizeof (obp_buf) - sizeof (unsigned int);
+	      strcpy (obp_cmd->oprom_array, "device_type");
+	      ret = __ioctl (obp_dev_fd, OPROMGETPROP, (char *) obp_cmd);
+	      if (ret == 0
+		  && strncmp (obp_cmd->oprom_array, "cpu", 3) == 0)
+		{
+		  obp_cmd->oprom_size = (sizeof (obp_buf)
+					 - sizeof (unsigned int));
+		  strcpy (obp_cmd->oprom_array, "clock-frequency");
+		  ret = __ioctl (obp_dev_fd, OPROMGETPROP, (char *) obp_cmd);
+		  if (ret == 0)
+		    result = (hp_timing_t) get_obp_int (obp_cmd);
+		}
+	      obp_cmd->oprom_size = sizeof (obp_buf) - sizeof (unsigned int);
+	      set_obp_int (obp_cmd, cur_node);
+	      ret = __ioctl (obp_dev_fd, OPROMNEXT, (char *) obp_cmd);
+	      if (ret < 0)
+		break;
+	      cur_node = get_obp_int (obp_cmd);
+	    }
+	}
+    }
+
+  return result;
+}
+
+hp_timing_t
+__get_clockfreq (void)
+{
+  static hp_timing_t result;
+
+  /* If this function was called before, we know the result.  */
+  if (result != 0)
+    return result;
+
+  /* We first read the information from the /proc/cpuinfo file.
+     It contains at least one line like
+	Cpu0ClkTick         : 000000002cb41780
+     We search for this line and convert the number in an integer.  */
+  result = __get_clockfreq_via_cpuinfo ();
+  if (result != 0)
+    return result;
+
+  /* If that did not work, try to find an OpenPROM node
+     with device_type equal to 'cpu' using /dev/openprom
+     and fetch the clock-frequency property from there.  */
+  result = __get_clockfreq_via_dev_openprom ();
+  if (result != 0)
+    return result;
+
+  /* Finally, try the same lookup as above but using /proc/openprom.  */
+  result = __get_clockfreq_via_proc_openprom ();
+
+  return result;
+}