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/* 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>
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