1 files changed, 97 insertions, 0 deletions
diff --git a/sysdeps/powerpc/dl-diagnostics-cpu.c b/sysdeps/powerpc/dl-diagnostics-cpu.c
new file mode 100644
index 0000000..6e7a530
--- /dev/null
+++ b/sysdeps/powerpc/dl-diagnostics-cpu.c
@@ -0,0 +1,97 @@
+/* Print CPU diagnostics data in ld.so.  PowerPC version.
+   Copyright (C) 2025 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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <dl-diagnostics.h>
+#include <dl-hwcap-info.h>
+#include <ldsodefs.h>
+#include <sys/auxv.h>
+
+static void
+print_hwcap_value (const char *label, int hwcap, unsigned long int value)
+{
+  _dl_printf ("powerpc.cpu_features.%s=\"", label);
+  size_t offset = 0;
+  for (int i = 0; i < __dl_hwcap_info_size; ++i)
+    {
+      const char *hwcap_name = __dl_hwcap_names + offset;
+      size_t hwcap_name_len = strlen (hwcap_name);
+      if (hwcap == __dl_hwcap_info[i].hwcap
+	  && value & __dl_hwcap_info[i].value)
+	_dl_printf ("%s ", hwcap_name);
+      offset += hwcap_name_len + 1;
+    }
+  _dl_printf ("\"\n");
+}
+
+static void
+print_cache_geometry_value (const char *label, unsigned long int geometry)
+{
+  unsigned long int assocty, line;
+
+  _dl_printf ("powerpc.cpu_features.%s=\"", label);
+
+  line = geometry & 0xffff;
+  assocty = (geometry >> 16) & 0xffff;
+
+  if (line == 0)
+    _dl_printf ("Unknown line size, ");
+  else
+    _dl_printf ("%luB line size, ", line);
+
+  switch (assocty)
+    {
+    case 0:
+      _dl_printf ("Unknown associativity");
+      break;
+    case 1:
+      _dl_printf ("Directly mapped");
+      break;
+    case 0xffff:
+      _dl_printf ("Fully associative");
+      break;
+    default:
+      _dl_printf ("%lu-way set associative", assocty);
+    }
+  _dl_printf ("\"\n");
+}
+
+void
+_dl_diagnostics_cpu (void)
+{
+  print_hwcap_value ("hwcap", AT_HWCAP, GLRO(dl_hwcap));
+  print_hwcap_value ("hwcap2", AT_HWCAP2, GLRO(dl_hwcap2));
+  print_hwcap_value ("hwcap3", AT_HWCAP3, GLRO(dl_hwcap3));
+  print_hwcap_value ("hwcap4", AT_HWCAP4, GLRO(dl_hwcap4));
+
+  for (ElfW(auxv_t) *av = GLRO(dl_auxv); av->a_type != AT_NULL; ++av)
+    switch (av->a_type)
+      {
+      case AT_L1I_CACHEGEOMETRY:
+        print_cache_geometry_value ("l1i_cachegeometry", av->a_un.a_val);
+        break;
+      case AT_L1D_CACHEGEOMETRY:
+        print_cache_geometry_value ("l1d_cachegeometry", av->a_un.a_val);
+        break;
+      case AT_L2_CACHEGEOMETRY:
+        print_cache_geometry_value ("l2_cachegeometry", av->a_un.a_val);
+        break;
+      case AT_L3_CACHEGEOMETRY:
+        print_cache_geometry_value ("l3_cachegeometry", av->a_un.a_val);
+        break;
+      }
+}