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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.
This commit is contained in:
Ulrich Drepper
parent
f00b19417d
commit
11bf8ce1d6
42
ChangeLog
42
ChangeLog
@ -1,3 +1,45 @@
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2003-07-22 H.J. Lu <hongjiu.lu@intel.com>
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* elf/dl-support.c (_dl_hwcap): New variable.
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(_dl_aux_init): Initialize GL(dl_hwcap) for static binaries.
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* sysdeps/i386/fpu/fclrexcpt.c: Include <unistd.h>, <ldsodefs.h>
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and <dl-procinfo.h>.
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(__feclearexcept): Clear MXCSR if needed.
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* sysdeps/i386/fpu/fsetexcptflg.c: Likewise.
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* sysdeps/i386/fpu_control.h (_FPU_GETCW, _FPU_SETCW): Document
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that newer hardware needs more than these macros.
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* sysdeps/i386/setfpucw.c: New file.
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2003-07-22 Jakub Jelinek <jakub@redhat.com>
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* elf/Makefile (CFLAGS-ldconfig.c): Define IS_IN_ldconfig.
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* elf/ldconfig.c: Include dl-procinfo.c.
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(PROCINFO_CLASS): Define.
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* sysdeps/generic/ldsodefs.h (PROCINFO_CLASS): Define.
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* sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c: New file.
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* sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h: New file.
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* sysdeps/unix/sysv/linux/i386/dl-procinfo.c (PROCINFO_CLASS):
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Define if not yet defined. Use it instead of EXTERN. Undefine
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at the end of the file.
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* sysdeps/unix/sysv/linux/arm/dl-procinfo.c (PROCINFO_CLASS):
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Likewise.
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* sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.c
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(PROCINFO_CLASS): Likewise.
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* sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.c
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(PROCINFO_CLASS): Likewise.
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2003-07-22 H.J. Lu <hongjiu.lu@intel.com>
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* elf/ldconfig.c (main): Issue a fatal error if relative path
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is used to build cache.
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2003-07-22 Ulrich Drepper <drepper@redhat.com>
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* elf/readlib.c (process_file): Avoid possible overflow in assignment.
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2003-07-21 Art Haas <ahaas@airmail.net>
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* manual/charset.texi (Converting a Character): Fix example code so a
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@ -336,7 +336,7 @@ $(objpfx)sprof: $(libdl)
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$(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
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SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
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CFLAGS-ldconfig.c = $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' \
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-D'SLIBDIR="$(slibdir)"'
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-D'SLIBDIR="$(slibdir)"' -DIS_IN_ldconfig=1
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CFLAGS-dl-cache.c = $(SYSCONF-FLAGS)
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CFLAGS-cache.c = $(SYSCONF-FLAGS)
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@ -123,6 +123,7 @@ int _dl_correct_cache_id = _DL_CACHE_DEFAULT_ID;
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struct ElfW(Phdr) *_dl_phdr;
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size_t _dl_phnum;
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unsigned long int _dl_hwcap;
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#ifdef NEED_DL_SYSINFO
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/* Needed for improved syscall handling on at least x86/Linux. */
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@ -167,6 +168,9 @@ _dl_aux_init (ElfW(auxv_t) *av)
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case AT_PHNUM:
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GL(dl_phnum) = av->a_un.a_val;
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break;
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case AT_HWCAP:
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GL(dl_hwcap) = av->a_un.a_val;
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break;
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#ifdef NEED_DL_SYSINFO
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case AT_SYSINFO:
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GL(dl_sysinfo) = av->a_un.a_val;
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@ -132,6 +132,9 @@ static const struct argp_option options[] =
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{ NULL, 0, NULL, 0, NULL, 0 }
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};
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#define PROCINFO_CLASS static
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#include <dl-procinfo.c>
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/* Short description of program. */
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static const char doc[] = N_("Configure Dynamic Linker Run Time Bindings.");
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@ -1009,12 +1012,17 @@ main (int argc, char **argv)
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/* Parse and process arguments. */
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argp_parse (&argp, argc, argv, 0, &remaining, NULL);
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/* Remaining arguments are additional libraries if opt_manual_link
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/* Remaining arguments are additional directories if opt_manual_link
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is not set. */
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if (remaining != argc && !opt_manual_link)
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{
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int i;
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for (i = remaining; i < argc; ++i)
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if (opt_build_cache && argv[i][0] != '/')
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error (EXIT_FAILURE, 0,
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_("relative path `%s' used to build cache"),
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argv[i]);
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else
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add_dir (argv[i]);
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}
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@ -343,6 +343,7 @@ struct rtld_global
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/* Get architecture specific definitions. */
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#define PROCINFO_DECL
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#define PROCINFO_CLASS EXTERN
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#include <dl-procinfo.c>
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/* Structure describing the dynamic linker itself. */
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@ -19,6 +19,9 @@
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02111-1307 USA. */
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#include <fenv.h>
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#include <unistd.h>
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#include <ldsodefs.h>
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#include <dl-procinfo.h>
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int
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__feclearexcept (int excepts)
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@ -38,6 +41,21 @@ __feclearexcept (int excepts)
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/* Put the new data in effect. */
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__asm__ ("fldenv %0" : : "m" (*&temp));
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/* If the CPU supports SSE, we clear the MXCSR as well. */
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if ((GL(dl_hwcap) & HWCAP_I386_XMM) != 0)
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{
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unsigned int xnew_exc;
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/* Get the current MXCSR. */
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__asm__ ("stmxcsr %0" : "=m" (*&xnew_exc));
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/* Clear the relevant bits. */
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xnew_exc &= excepts ^ FE_ALL_EXCEPT;
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/* Put the new data in effect. */
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__asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
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}
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/* Success. */
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return 0;
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}
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@ -21,6 +21,9 @@
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#include <fenv.h>
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#include <math.h>
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#include <bp-sym.h>
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#include <unistd.h>
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#include <ldsodefs.h>
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#include <dl-procinfo.h>
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int
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__fesetexceptflag (const fexcept_t *flagp, int excepts)
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@ -39,6 +42,22 @@ __fesetexceptflag (const fexcept_t *flagp, int excepts)
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the next floating-point instruction. */
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__asm__ ("fldenv %0" : : "m" (*&temp));
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/* If the CPU supports SSE, we set the MXCSR as well. */
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if ((GL(dl_hwcap) & HWCAP_I386_XMM) != 0)
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{
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unsigned int xnew_exc;
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/* Get the current MXCSR. */
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__asm__ ("stmxcsr %0" : "=m" (*&xnew_exc));
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/* Set the relevant bits. */
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xnew_exc &= ~(excepts & FE_ALL_EXCEPT);
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xnew_exc |= *flagp & excepts & FE_ALL_EXCEPT;
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/* Put the new data in effect. */
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__asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
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}
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/* Success. */
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return 0;
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}
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@ -1,5 +1,5 @@
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/* FPU control word bits. i387 version.
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Copyright (C) 1993,1995,1996,1997,1998,2000,2001 Free Software Foundation, Inc.
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Copyright (C) 1993,1995-1998,2000,2001,2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Olaf Flebbe.
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@ -88,7 +88,11 @@
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/* Type of the control word. */
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typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
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/* Macros for accessing the hardware control word. */
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/* Macros for accessing the hardware control word.
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Note that the use of these macros is no sufficient anymore with
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recent hardware. Some floating point operations are executed in
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the SSE/SSE2 engines which have their own control and status register. */
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#define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (*&cw))
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#define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (*&cw))
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55
sysdeps/i386/setfpucw.c
Normal file
55
sysdeps/i386/setfpucw.c
Normal file
@ -0,0 +1,55 @@
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/* Set the FPU control word for x86.
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Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <math.h>
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#include <fpu_control.h>
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#include <fenv.h>
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#include <unistd.h>
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#include <ldsodefs.h>
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#include <dl-procinfo.h>
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void
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__setfpucw (fpu_control_t set)
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{
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fpu_control_t cw;
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/* Fetch the current control word. */
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__asm__ ("fnstcw %0" : "=m" (*&cw));
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/* Preserve the reserved bits, and set the rest as the user
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specified (or the default, if the user gave zero). */
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cw &= _FPU_RESERVED;
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cw |= set & ~_FPU_RESERVED;
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__asm__ ("fldcw %0" : : "m" (*&cw));
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/* If the CPU supports SSE, we set the MXCSR as well. */
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if ((GL(dl_hwcap) & HWCAP_I386_XMM) != 0)
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{
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unsigned int xnew_exc;
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/* Get the current MXCSR. */
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__asm__ ("stmxcsr %0" : "=m" (*&xnew_exc));
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xnew_exc &= ~((0xc00 << 3) | (FE_ALL_EXCEPT << 7));
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xnew_exc |= ((set & 0xc00) << 3) | ((set & FE_ALL_EXCEPT) << 7);
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__asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
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}
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}
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@ -1,5 +1,5 @@
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/* Data for Linux/ARM version of processor capability information.
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Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Philip Blundell <philb@gnu.org>, 2001.
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@ -40,13 +40,14 @@
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needed.
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*/
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#ifdef PROCINFO_DECL
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EXTERN
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#ifndef PROCINFO_CLASS
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#define PROCINFO_CLASS
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#endif
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#if !defined PROCINFO_DECL && defined SHARED
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._dl_arm_cap_flags
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#else
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const char _dl_arm_cap_flags[8][10]
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PROCINFO_CLASS const char _dl_arm_cap_flags[8][10]
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#endif
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#ifndef PROCINFO_DECL
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= {
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@ -60,3 +61,4 @@ const char _dl_arm_cap_flags[8][10]
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#endif
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#undef PROCINFO_DECL
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#undef PROCINFO_CLASS
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@ -40,13 +40,14 @@
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needed.
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*/
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#ifdef PROCINFO_DECL
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EXTERN
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#ifndef PROCINFO_CLASS
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#define PROCINFO_CLASS
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#endif
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#if !defined PROCINFO_DECL && defined SHARED
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._dl_x86_cap_flags
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#else
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const char _dl_x86_cap_flags[32][8]
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PROCINFO_CLASS const char _dl_x86_cap_flags[32][8]
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#endif
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#ifndef PROCINFO_DECL
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= {
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@ -62,13 +63,10 @@ const char _dl_x86_cap_flags[32][8]
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,
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#endif
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#ifdef PROCINFO_DECL
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EXTERN
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#endif
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#if !defined PROCINFO_DECL && defined SHARED
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._dl_x86_platforms
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#else
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const char _dl_x86_platforms[4][5]
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PROCINFO_CLASS const char _dl_x86_platforms[4][5]
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#endif
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#ifndef PROCINFO_DECL
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= {
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@ -82,3 +80,4 @@ const char _dl_x86_platforms[4][5]
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#endif
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#undef PROCINFO_DECL
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#undef PROCINFO_CLASS
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@ -1,5 +1,5 @@
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/* Data for Linux/sparc32 version of processor capability information.
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Copyright (C) 2002 Free Software Foundation, Inc.
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Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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@ -40,13 +40,14 @@
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needed.
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*/
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#ifdef PROCINFO_DECL
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EXTERN
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#ifndef PROCINFO_CLASS
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#define PROCINFO_CLASS
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#endif
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#if !defined PROCINFO_DECL && defined SHARED
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._dl_sparc32_cap_flags
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#else
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const char _dl_sparc32_cap_flags[6][7]
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PROCINFO_CLASS const char _dl_sparc32_cap_flags[6][7]
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#endif
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#ifndef PROCINFO_DECL
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= {
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@ -60,3 +61,4 @@ const char _dl_sparc32_cap_flags[6][7]
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#endif
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#undef PROCINFO_DECL
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#undef PROCINFO_CLASS
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@ -1,5 +1,5 @@
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/* Data for Linux/sparc64 version of processor capability information.
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Copyright (C) 2002 Free Software Foundation, Inc.
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Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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@ -40,13 +40,14 @@
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needed.
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*/
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#ifdef PROCINFO_DECL
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EXTERN
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#ifndef PROCINFO_CLASS
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#define PROCINFO_CLASS
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#endif
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#if !defined PROCINFO_DECL && defined SHARED
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._dl_sparc64_cap_flags
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#else
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const char _dl_sparc64_cap_flags[6][7]
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PROCINFO_CLASS const char _dl_sparc64_cap_flags[6][7]
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#endif
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#ifndef PROCINFO_DECL
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= {
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@ -60,3 +61,4 @@ const char _dl_sparc64_cap_flags[6][7]
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#endif
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#undef PROCINFO_DECL
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#undef PROCINFO_CLASS
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5
sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c
Normal file
5
sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c
Normal file
@ -0,0 +1,5 @@
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#ifdef IS_IN_ldconfig
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#include <sysdeps/unix/sysv/linux/i386/dl-procinfo.c>
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#else
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#include <sysdeps/generic/dl-procinfo.c>
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#endif
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5
sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h
Normal file
5
sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h
Normal file
@ -0,0 +1,5 @@
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#ifdef IS_IN_ldconfig
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#include <sysdeps/unix/sysv/linux/i386/dl-procinfo.h>
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#else
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#include <sysdeps/generic/dl-procinfo.h>
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#endif
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