2.5-18.1

1 files changed, 59 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/i386/dl-cache.h b/sysdeps/unix/sysv/linux/i386/dl-cache.h
new file mode 100644
index 0000000000..38a1c7dfb4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/dl-cache.h
@@ -0,0 +1,59 @@
+/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
+   Copyright (C) 2004 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+static inline int
+is_ia64 (void)
+{
+  unsigned int fl1, fl2;
+
+  /* See if we can use cpuid.  */
+  __asm__ ("pushfl; pushfl; popl %0; movl %0,%1; xorl %2,%0;"
+           "pushl %0; popfl; pushfl; popl %0; popfl"
+           : "=&r" (fl1), "=&r" (fl2)
+           : "i" (0x00200000));
+  if (((fl1 ^ fl2) & 0x00200000) == 0)
+    return 0;
+
+  /* Host supports cpuid.  See if cpuid gives capabilities, try
+     CPUID(0).  Preserve %ebx and %ecx; cpuid insn clobbers these, we
+     don't need their CPUID values here, and %ebx may be the PIC
+     register.  */
+  __asm__ ("pushl %%ecx; pushl %%ebx; cpuid; popl %%ebx; popl %%ecx"
+           : "=a" (fl1) : "0" (0) : "edx", "cc");
+  if (fl1 == 0)
+    return 0;
+
+  /* Invoke CPUID(1), return %edx; caller can examine bits to
+     determine what's supported.  */
+  __asm__ ("pushl %%ecx; pushl %%ebx; cpuid; popl %%ebx; popl %%ecx"
+           : "=d" (fl2), "=a" (fl1) : "1" (1) : "cc");
+  return (fl2 & (1 << 30)) != 0;
+}
+
+#define arch_startup(argc, argv) \
+  do {									\
+    /* On IA-64, try to execute 64-bit ldconfig if possible.		\
+       This is because the badly designed /emul/ia32-linux hack		\
+       will cause 32-bit ldconfig to do all sorts of weird things.  */	\
+    if (is_ia64 ())							\
+      execv ("/emul/ia32-linux/../../sbin/ldconfig",			\
+	     (char *const *) argv);					\
+  } while (0)
+
+#include_next <dl-cache.h>