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authorUlrich Drepper <drepper@redhat.com>2003-07-22 22:28:07 +0000
committerUlrich Drepper <drepper@redhat.com>2003-07-22 22:28:07 +0000
commit11bf8ce1d6c28b4758cedeaea9558f6a071fe7d8 (patch)
tree0f78f99928ebbe5b7abe4619e33eb04fbc95d841
parentf00b19417df4f29fc3264f772c46305f60181cd6 (diff)
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Update.
2003-07-22 H.J. Lu <hongjiu.lu@intel.com> * elf/dl-support.c (_dl_hwcap): New variable. (_dl_aux_init): Initialize GL(dl_hwcap) for static binaries. * sysdeps/i386/fpu/fclrexcpt.c: Include <unistd.h>, <ldsodefs.h> and <dl-procinfo.h>. (__feclearexcept): Clear MXCSR if needed. * sysdeps/i386/fpu/fsetexcptflg.c: Likewise. * sysdeps/i386/fpu_control.h (_FPU_GETCW, _FPU_SETCW): Document that newer hardware needs more than these macros. * sysdeps/i386/setfpucw.c: New file. 2003-07-22 Jakub Jelinek <jakub@redhat.com> * elf/Makefile (CFLAGS-ldconfig.c): Define IS_IN_ldconfig. * elf/ldconfig.c: Include dl-procinfo.c. (PROCINFO_CLASS): Define. * sysdeps/generic/ldsodefs.h (PROCINFO_CLASS): Define. * sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c: New file. * sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h: New file. * sysdeps/unix/sysv/linux/i386/dl-procinfo.c (PROCINFO_CLASS): Define if not yet defined. Use it instead of EXTERN. Undefine at the end of the file. * sysdeps/unix/sysv/linux/arm/dl-procinfo.c (PROCINFO_CLASS): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c (PROCINFO_CLASS): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c (PROCINFO_CLASS): Likewise. 2003-07-22 H.J. Lu <hongjiu.lu@intel.com> * elf/ldconfig.c (main): Issue a fatal error if relative path is used to build cache. 2003-07-22 Ulrich Drepper <drepper@redhat.com> * elf/readlib.c (process_file): Avoid possible overflow in assignment.
-rw-r--r--ChangeLog42
-rw-r--r--elf/Makefile2
-rw-r--r--elf/dl-support.c4
-rw-r--r--elf/ldconfig.c12
-rw-r--r--sysdeps/generic/ldsodefs.h1
-rw-r--r--sysdeps/i386/fpu/fclrexcpt.c18
-rw-r--r--sysdeps/i386/fpu/fsetexcptflg.c19
-rw-r--r--sysdeps/i386/fpu_control.h8
-rw-r--r--sysdeps/i386/setfpucw.c55
-rw-r--r--sysdeps/unix/sysv/linux/arm/dl-procinfo.c10
-rw-r--r--sysdeps/unix/sysv/linux/i386/dl-procinfo.c13
-rw-r--r--sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c10
-rw-r--r--sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c10
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c5
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h5
15 files changed, 190 insertions, 24 deletions
diff --git a/ChangeLog b/ChangeLog
index 639373e9df..42525d6db7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,45 @@
+2003-07-22 H.J. Lu <hongjiu.lu@intel.com>
+
+ * elf/dl-support.c (_dl_hwcap): New variable.
+ (_dl_aux_init): Initialize GL(dl_hwcap) for static binaries.
+
+ * sysdeps/i386/fpu/fclrexcpt.c: Include <unistd.h>, <ldsodefs.h>
+ and <dl-procinfo.h>.
+ (__feclearexcept): Clear MXCSR if needed.
+ * sysdeps/i386/fpu/fsetexcptflg.c: Likewise.
+
+ * sysdeps/i386/fpu_control.h (_FPU_GETCW, _FPU_SETCW): Document
+ that newer hardware needs more than these macros.
+
+ * sysdeps/i386/setfpucw.c: New file.
+
+2003-07-22 Jakub Jelinek <jakub@redhat.com>
+
+ * elf/Makefile (CFLAGS-ldconfig.c): Define IS_IN_ldconfig.
+ * elf/ldconfig.c: Include dl-procinfo.c.
+ (PROCINFO_CLASS): Define.
+ * sysdeps/generic/ldsodefs.h (PROCINFO_CLASS): Define.
+ * sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c: New file.
+ * sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h: New file.
+ * sysdeps/unix/sysv/linux/i386/dl-procinfo.c (PROCINFO_CLASS):
+ Define if not yet defined. Use it instead of EXTERN. Undefine
+ at the end of the file.
+ * sysdeps/unix/sysv/linux/arm/dl-procinfo.c (PROCINFO_CLASS):
+ Likewise.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c
+ (PROCINFO_CLASS): Likewise.
+ * sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c
+ (PROCINFO_CLASS): Likewise.
+
+2003-07-22 H.J. Lu <hongjiu.lu@intel.com>
+
+ * elf/ldconfig.c (main): Issue a fatal error if relative path
+ is used to build cache.
+
+2003-07-22 Ulrich Drepper <drepper@redhat.com>
+
+ * elf/readlib.c (process_file): Avoid possible overflow in assignment.
+
2003-07-21 Art Haas <ahaas@airmail.net>
* manual/charset.texi (Converting a Character): Fix example code so a
diff --git a/elf/Makefile b/elf/Makefile
index 5ba98fc4e8..7c654f86ae 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -336,7 +336,7 @@ $(objpfx)sprof: $(libdl)
$(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
CFLAGS-ldconfig.c = $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' \
- -D'SLIBDIR="$(slibdir)"'
+ -D'SLIBDIR="$(slibdir)"' -DIS_IN_ldconfig=1
CFLAGS-dl-cache.c = $(SYSCONF-FLAGS)
CFLAGS-cache.c = $(SYSCONF-FLAGS)
diff --git a/elf/dl-support.c b/elf/dl-support.c
index 6d83da3328..1616eec2f4 100644
--- a/elf/dl-support.c
+++ b/elf/dl-support.c
@@ -123,6 +123,7 @@ int _dl_correct_cache_id = _DL_CACHE_DEFAULT_ID;
struct ElfW(Phdr) *_dl_phdr;
size_t _dl_phnum;
+unsigned long int _dl_hwcap;
#ifdef NEED_DL_SYSINFO
/* Needed for improved syscall handling on at least x86/Linux. */
@@ -167,6 +168,9 @@ _dl_aux_init (ElfW(auxv_t) *av)
case AT_PHNUM:
GL(dl_phnum) = av->a_un.a_val;
break;
+ case AT_HWCAP:
+ GL(dl_hwcap) = av->a_un.a_val;
+ break;
#ifdef NEED_DL_SYSINFO
case AT_SYSINFO:
GL(dl_sysinfo) = av->a_un.a_val;
diff --git a/elf/ldconfig.c b/elf/ldconfig.c
index 1acacb4225..b7ac4882f5 100644
--- a/elf/ldconfig.c
+++ b/elf/ldconfig.c
@@ -132,6 +132,9 @@ static const struct argp_option options[] =
{ NULL, 0, NULL, 0, NULL, 0 }
};
+#define PROCINFO_CLASS static
+#include <dl-procinfo.c>
+
/* Short description of program. */
static const char doc[] = N_("Configure Dynamic Linker Run Time Bindings.");
@@ -1009,13 +1012,18 @@ main (int argc, char **argv)
/* Parse and process arguments. */
argp_parse (&argp, argc, argv, 0, &remaining, NULL);
- /* Remaining arguments are additional libraries if opt_manual_link
+ /* Remaining arguments are additional directories if opt_manual_link
is not set. */
if (remaining != argc && !opt_manual_link)
{
int i;
for (i = remaining; i < argc; ++i)
- add_dir (argv[i]);
+ if (opt_build_cache && argv[i][0] != '/')
+ error (EXIT_FAILURE, 0,
+ _("relative path `%s' used to build cache"),
+ argv[i]);
+ else
+ add_dir (argv[i]);
}
set_hwcap ();
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 2a3cf2bd09..570b52261b 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -343,6 +343,7 @@ struct rtld_global
/* Get architecture specific definitions. */
#define PROCINFO_DECL
+#define PROCINFO_CLASS EXTERN
#include <dl-procinfo.c>
/* Structure describing the dynamic linker itself. */
diff --git a/sysdeps/i386/fpu/fclrexcpt.c b/sysdeps/i386/fpu/fclrexcpt.c
index c3e7c3ed48..f7ccd3acf6 100644
--- a/sysdeps/i386/fpu/fclrexcpt.c
+++ b/sysdeps/i386/fpu/fclrexcpt.c
@@ -19,6 +19,9 @@
02111-1307 USA. */
#include <fenv.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
int
__feclearexcept (int excepts)
@@ -38,6 +41,21 @@ __feclearexcept (int excepts)
/* Put the new data in effect. */
__asm__ ("fldenv %0" : : "m" (*&temp));
+ /* If the CPU supports SSE, we clear the MXCSR as well. */
+ if ((GL(dl_hwcap) & HWCAP_I386_XMM) != 0)
+ {
+ unsigned int xnew_exc;
+
+ /* Get the current MXCSR. */
+ __asm__ ("stmxcsr %0" : "=m" (*&xnew_exc));
+
+ /* Clear the relevant bits. */
+ xnew_exc &= excepts ^ FE_ALL_EXCEPT;
+
+ /* Put the new data in effect. */
+ __asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
+ }
+
/* Success. */
return 0;
}
diff --git a/sysdeps/i386/fpu/fsetexcptflg.c b/sysdeps/i386/fpu/fsetexcptflg.c
index 2bfc736054..d262738b68 100644
--- a/sysdeps/i386/fpu/fsetexcptflg.c
+++ b/sysdeps/i386/fpu/fsetexcptflg.c
@@ -21,6 +21,9 @@
#include <fenv.h>
#include <math.h>
#include <bp-sym.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
int
__fesetexceptflag (const fexcept_t *flagp, int excepts)
@@ -39,6 +42,22 @@ __fesetexceptflag (const fexcept_t *flagp, int excepts)
the next floating-point instruction. */
__asm__ ("fldenv %0" : : "m" (*&temp));
+ /* If the CPU supports SSE, we set the MXCSR as well. */
+ if ((GL(dl_hwcap) & HWCAP_I386_XMM) != 0)
+ {
+ unsigned int xnew_exc;
+
+ /* Get the current MXCSR. */
+ __asm__ ("stmxcsr %0" : "=m" (*&xnew_exc));
+
+ /* Set the relevant bits. */
+ xnew_exc &= ~(excepts & FE_ALL_EXCEPT);
+ xnew_exc |= *flagp & excepts & FE_ALL_EXCEPT;
+
+ /* Put the new data in effect. */
+ __asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
+ }
+
/* Success. */
return 0;
}
diff --git a/sysdeps/i386/fpu_control.h b/sysdeps/i386/fpu_control.h
index ed9bf388a8..e2d00467b7 100644
--- a/sysdeps/i386/fpu_control.h
+++ b/sysdeps/i386/fpu_control.h
@@ -1,5 +1,5 @@
/* FPU control word bits. i387 version.
- Copyright (C) 1993,1995,1996,1997,1998,2000,2001 Free Software Foundation, Inc.
+ Copyright (C) 1993,1995-1998,2000,2001,2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Olaf Flebbe.
@@ -88,7 +88,11 @@
/* Type of the control word. */
typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
-/* Macros for accessing the hardware control word. */
+/* Macros for accessing the hardware control word.
+
+ Note that the use of these macros is no sufficient anymore with
+ recent hardware. Some floating point operations are executed in
+ the SSE/SSE2 engines which have their own control and status register. */
#define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (*&cw))
#define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (*&cw))
diff --git a/sysdeps/i386/setfpucw.c b/sysdeps/i386/setfpucw.c
new file mode 100644
index 0000000000..0a6af25ddf
--- /dev/null
+++ b/sysdeps/i386/setfpucw.c
@@ -0,0 +1,55 @@
+/* Set the FPU control word for x86.
+ Copyright (C) 2003 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. */
+
+#include <math.h>
+#include <fpu_control.h>
+#include <fenv.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
+
+void
+__setfpucw (fpu_control_t set)
+{
+ fpu_control_t cw;
+
+ /* Fetch the current control word. */
+ __asm__ ("fnstcw %0" : "=m" (*&cw));
+
+ /* Preserve the reserved bits, and set the rest as the user
+ specified (or the default, if the user gave zero). */
+ cw &= _FPU_RESERVED;
+ cw |= set & ~_FPU_RESERVED;
+
+ __asm__ ("fldcw %0" : : "m" (*&cw));
+
+ /* If the CPU supports SSE, we set the MXCSR as well. */
+ if ((GL(dl_hwcap) & HWCAP_I386_XMM) != 0)
+ {
+ unsigned int xnew_exc;
+
+ /* Get the current MXCSR. */
+ __asm__ ("stmxcsr %0" : "=m" (*&xnew_exc));
+
+ xnew_exc &= ~((0xc00 << 3) | (FE_ALL_EXCEPT << 7));
+ xnew_exc |= ((set & 0xc00) << 3) | ((set & FE_ALL_EXCEPT) << 7);
+
+ __asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
+ }
+}
diff --git a/sysdeps/unix/sysv/linux/arm/dl-procinfo.c b/sysdeps/unix/sysv/linux/arm/dl-procinfo.c
index 9acd07962b..9b87a2003d 100644
--- a/sysdeps/unix/sysv/linux/arm/dl-procinfo.c
+++ b/sysdeps/unix/sysv/linux/arm/dl-procinfo.c
@@ -1,5 +1,5 @@
/* Data for Linux/ARM version of processor capability information.
- Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Philip Blundell <philb@gnu.org>, 2001.
@@ -40,13 +40,14 @@
needed.
*/
-#ifdef PROCINFO_DECL
-EXTERN
+#ifndef PROCINFO_CLASS
+#define PROCINFO_CLASS
#endif
+
#if !defined PROCINFO_DECL && defined SHARED
._dl_arm_cap_flags
#else
-const char _dl_arm_cap_flags[8][10]
+PROCINFO_CLASS const char _dl_arm_cap_flags[8][10]
#endif
#ifndef PROCINFO_DECL
= {
@@ -60,3 +61,4 @@ const char _dl_arm_cap_flags[8][10]
#endif
#undef PROCINFO_DECL
+#undef PROCINFO_CLASS
diff --git a/sysdeps/unix/sysv/linux/i386/dl-procinfo.c b/sysdeps/unix/sysv/linux/i386/dl-procinfo.c
index 1631c6504b..3b1f9bb25e 100644
--- a/sysdeps/unix/sysv/linux/i386/dl-procinfo.c
+++ b/sysdeps/unix/sysv/linux/i386/dl-procinfo.c
@@ -40,13 +40,14 @@
needed.
*/
-#ifdef PROCINFO_DECL
-EXTERN
+#ifndef PROCINFO_CLASS
+#define PROCINFO_CLASS
#endif
+
#if !defined PROCINFO_DECL && defined SHARED
._dl_x86_cap_flags
#else
-const char _dl_x86_cap_flags[32][8]
+PROCINFO_CLASS const char _dl_x86_cap_flags[32][8]
#endif
#ifndef PROCINFO_DECL
= {
@@ -62,13 +63,10 @@ const char _dl_x86_cap_flags[32][8]
,
#endif
-#ifdef PROCINFO_DECL
-EXTERN
-#endif
#if !defined PROCINFO_DECL && defined SHARED
._dl_x86_platforms
#else
-const char _dl_x86_platforms[4][5]
+PROCINFO_CLASS const char _dl_x86_platforms[4][5]
#endif
#ifndef PROCINFO_DECL
= {
@@ -82,3 +80,4 @@ const char _dl_x86_platforms[4][5]
#endif
#undef PROCINFO_DECL
+#undef PROCINFO_CLASS
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c b/sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c
index 30d0084c0c..e9042d9717 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c
@@ -1,5 +1,5 @@
/* Data for Linux/sparc32 version of processor capability information.
- Copyright (C) 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
@@ -40,13 +40,14 @@
needed.
*/
-#ifdef PROCINFO_DECL
-EXTERN
+#ifndef PROCINFO_CLASS
+#define PROCINFO_CLASS
#endif
+
#if !defined PROCINFO_DECL && defined SHARED
._dl_sparc32_cap_flags
#else
-const char _dl_sparc32_cap_flags[6][7]
+PROCINFO_CLASS const char _dl_sparc32_cap_flags[6][7]
#endif
#ifndef PROCINFO_DECL
= {
@@ -60,3 +61,4 @@ const char _dl_sparc32_cap_flags[6][7]
#endif
#undef PROCINFO_DECL
+#undef PROCINFO_CLASS
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c b/sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c
index 43c96589e5..0a453a6811 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c
@@ -1,5 +1,5 @@
/* Data for Linux/sparc64 version of processor capability information.
- Copyright (C) 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
@@ -40,13 +40,14 @@
needed.
*/
-#ifdef PROCINFO_DECL
-EXTERN
+#ifndef PROCINFO_CLASS
+#define PROCINFO_CLASS
#endif
+
#if !defined PROCINFO_DECL && defined SHARED
._dl_sparc64_cap_flags
#else
-const char _dl_sparc64_cap_flags[6][7]
+PROCINFO_CLASS const char _dl_sparc64_cap_flags[6][7]
#endif
#ifndef PROCINFO_DECL
= {
@@ -60,3 +61,4 @@ const char _dl_sparc64_cap_flags[6][7]
#endif
#undef PROCINFO_DECL
+#undef PROCINFO_CLASS
diff --git a/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c b/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c
new file mode 100644
index 0000000000..ec9c4a7eb7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c
@@ -0,0 +1,5 @@
+#ifdef IS_IN_ldconfig
+#include <sysdeps/unix/sysv/linux/i386/dl-procinfo.c>
+#else
+#include <sysdeps/generic/dl-procinfo.c>
+#endif
diff --git a/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h b/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h
new file mode 100644
index 0000000000..b360b4288a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h
@@ -0,0 +1,5 @@
+#ifdef IS_IN_ldconfig
+#include <sysdeps/unix/sysv/linux/i386/dl-procinfo.h>
+#else
+#include <sysdeps/generic/dl-procinfo.h>
+#endif