mirror of
https://sourceware.org/git/glibc.git
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* scripts/abilist.awk: New file.
* Makefile (distribute): Add it. * Makerules ($(objpfx)%.dynsym, $(objpfx)%.symlist): New rules. (tests): Depend on .symlist file for each $(install-lib.so-versioned). [! subdir] (tests): Depend on libc.symlist. (generated): Add those files. * aclocal.m4 (LIBC_PROG_BINUTILS): Check for objdump, set OBJDUMP. * configure: Regenerated. * config.make.in (OBJDUMP): New variable, substituted by configure. * malloc/mcheck.c (struct hdr): New members `block' and `magic2'. (mallochook, reallochook): Set them up. (checkhdr): Check HDR->magic2 value. (freehook): Reset HDR->magic2. (memalignhook): New static function. (old_memalign_hook): New static variable. (mcheck, reallochook): Set __memalign_hook to memalignhook.
This commit is contained in:
Roland McGrath
parent
cdedcc7943
commit
6e3d59bc05
18
ChangeLog
18
ChangeLog
@ -1,5 +1,23 @@
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2002-11-13 Roland McGrath <roland@redhat.com>
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* scripts/abilist.awk: New file.
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* Makefile (distribute): Add it.
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* Makerules ($(objpfx)%.dynsym, $(objpfx)%.symlist): New rules.
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(tests): Depend on .symlist file for each $(install-lib.so-versioned).
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[! subdir] (tests): Depend on libc.symlist.
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(generated): Add those files.
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* aclocal.m4 (LIBC_PROG_BINUTILS): Check for objdump, set OBJDUMP.
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* configure: Regenerated.
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* config.make.in (OBJDUMP): New variable, substituted by configure.
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* malloc/mcheck.c (struct hdr): New members `block' and `magic2'.
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(mallochook, reallochook): Set them up.
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(checkhdr): Check HDR->magic2 value.
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(freehook): Reset HDR->magic2.
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(memalignhook): New static function.
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(old_memalign_hook): New static variable.
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(mcheck, reallochook): Set __memalign_hook to memalignhook.
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* sysdeps/generic/dl-tls.c (_dl_allocate_tls_storage): Zero the space
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for the new TCB.
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2
Makefile
2
Makefile
@ -278,7 +278,7 @@ distribute := README README.libm INSTALL FAQ FAQ.in NOTES NEWS BUGS \
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rellns-sh config.sub config.guess \
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mkinstalldirs move-if-change install-sh \
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test-installation.pl gen-FAQ.pl versions.awk\
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gen-sorted.awk abi-versions.awk \
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gen-sorted.awk abi-versions.awk abilist.awk \
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firstversions.awk documented.sh cpp)
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distribute := $(strip $(distribute))
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22
Makerules
22
Makerules
@ -1073,6 +1073,28 @@ endif
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# The include magic above causes those files to use this variable for flags.
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CPPFLAGS-nonlib = -DNOT_IN_libc=1
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ifeq ($(versioning),yes)
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# Generate normalized lists of symbols, versions, and data sizes.
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# This is handy for checking against existing library binaries.
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$(objpfx)%.symlist: $(..)scripts/abilist.awk $(objpfx)%.dynsym
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$(AWK) -f $^ > $@T
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mv -f $@T $@
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$(objpfx)%.dynsym: $(objpfx)%.so
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$(OBJDUMP) --dynamic-syms $< > $@T
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mv -f $@T $@
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tests: $(patsubst %.so,$(objpfx)%.symlist,$(install-lib.so-versioned))
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generated += $(install-lib.so-versioned:.so=.symlist)
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ifndef subdir
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tests: $(objpfx)libc.symlist
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generated += libc.symlist
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endif
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endif
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.PHONY: TAGS
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TAGS: $(objpfx)distinfo $(..)MakeTAGS
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2
aclocal.m4
vendored
2
aclocal.m4
vendored
@ -96,6 +96,8 @@ AS=`$CC -print-prog-name=as`
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LD=`$CC -print-prog-name=ld`
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AR=`$CC -print-prog-name=ar`
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AC_SUBST(AR)
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OBJDUMP=`$CC -print-prog-name=objdump`
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AC_SUBST(OBJDUMP)
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# ranlib has to be treated a bit differently since it might not exist at all.
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ac_ranlib=`$CC -print-prog-name=ranlib`
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@ -92,6 +92,7 @@ MIG = @MIG@
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PWD_P = @PWD_P@
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BISON = @BISON@
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AUTOCONF = @AUTOCONF@
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OBJDUMP = @OBJDUMP@
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# Installation tools.
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INSTALL = @INSTALL@
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13
configure
vendored
13
configure
vendored
@ -309,7 +309,7 @@ ac_includes_default="\
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# include <unistd.h>
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#endif"
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ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS with_fp with_cvs oldest_abi subdirs force_install all_warnings build build_cpu build_vendor build_os host host_cpu host_vendor host_os base_machine sysnames INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN_S PWD_P CC MAKE MSGFMT MAKEINFO SED AUTOCONF CFLAGS LDFLAGS CPPFLAGS ac_ct_CC OBJEXT BUILD_CC cross_compiling CPP AR RANLIB ac_ct_RANLIB MIG AS LD CCVERSION SYSINCLUDES libc_cv_gcc_static_libgcc BASH libc_cv_have_bash2 KSH libc_cv_have_ksh AWK PERL INSTALL_INFO OLD_DEBIAN_INSTALL_INFO BISON VERSIONING libc_cv_asm_protected_directive libc_cv_initfinit_array libc_cv_z_nodelete libc_cv_z_nodlopen libc_cv_z_initfirst libc_cv_Bgroup libc_cv_z_combreloc libc_cv_have_initfini no_whole_archive exceptions LIBGD EGREP sizeof_long_double libc_cv_gcc_unwind_find_fde uname_sysname uname_release uname_version old_glibc_headers libc_cv_slibdir libc_cv_localedir libc_cv_sysconfdir libc_cv_rootsbindir use_ldconfig ldd_rewrite_script gnu_ld gnu_as elf xcoff static shared pic_default profile omitfp bounded static_nss nopic_initfini DEFINES linux_doors mach_interface_list VERSION RELEASE LIBOBJS LTLIBOBJS'
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ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS with_fp with_cvs oldest_abi subdirs force_install all_warnings build build_cpu build_vendor build_os host host_cpu host_vendor host_os base_machine sysnames INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN_S PWD_P CC MAKE MSGFMT MAKEINFO SED AUTOCONF CFLAGS LDFLAGS CPPFLAGS ac_ct_CC OBJEXT BUILD_CC cross_compiling CPP AR OBJDUMP RANLIB ac_ct_RANLIB MIG AS LD CCVERSION SYSINCLUDES libc_cv_gcc_static_libgcc BASH libc_cv_have_bash2 KSH libc_cv_have_ksh AWK PERL INSTALL_INFO OLD_DEBIAN_INSTALL_INFO BISON VERSIONING libc_cv_asm_protected_directive libc_cv_initfinit_array libc_cv_z_nodelete libc_cv_z_nodlopen libc_cv_z_initfirst libc_cv_Bgroup libc_cv_z_combreloc libc_cv_have_initfini no_whole_archive exceptions LIBGD EGREP sizeof_long_double libc_cv_gcc_unwind_find_fde uname_sysname uname_release uname_version old_glibc_headers libc_cv_slibdir libc_cv_localedir libc_cv_sysconfdir libc_cv_rootsbindir use_ldconfig ldd_rewrite_script gnu_ld gnu_as elf xcoff static shared pic_default profile omitfp bounded static_nss nopic_initfini DEFINES linux_doors mach_interface_list VERSION RELEASE LIBOBJS LTLIBOBJS'
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ac_subst_files=''
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# Initialize some variables set by options.
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@ -3500,6 +3500,8 @@ AS=`$CC -print-prog-name=as`
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LD=`$CC -print-prog-name=ld`
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AR=`$CC -print-prog-name=ar`
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OBJDUMP=`$CC -print-prog-name=objdump`
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# ranlib has to be treated a bit differently since it might not exist at all.
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ac_ranlib=`$CC -print-prog-name=ranlib`
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@ -5001,7 +5003,7 @@ if test "${libc_cv_asm_underscores+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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cat > conftest.$ac_ext <<EOF
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#line 5004 "configure"
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#line 5006 "configure"
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#include "confdefs.h"
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void underscore_test(void) {
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return; }
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@ -5261,7 +5263,7 @@ if test "${libc_cv_gcc_dwarf2_unwind_info+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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cat > conftest.c <<EOF
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#line 5264 "configure"
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#line 5266 "configure"
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static char *__EH_FRAME_BEGIN__;
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_start ()
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{
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@ -5360,7 +5362,7 @@ if test "${libc_cv_gcc_builtin_expect+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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cat > conftest.c <<EOF
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#line 5363 "configure"
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#line 5365 "configure"
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int foo (int a)
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{
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a = __builtin_expect (a, 10);
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@ -5428,7 +5430,7 @@ if test "${libc_cv_gcc_subtract_local_labels+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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cat > conftest.c <<EOF
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#line 5431 "configure"
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#line 5433 "configure"
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int foo (int a)
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{
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static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
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@ -6982,6 +6984,7 @@ s,@BUILD_CC@,$BUILD_CC,;t t
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s,@cross_compiling@,$cross_compiling,;t t
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s,@CPP@,$CPP,;t t
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s,@AR@,$AR,;t t
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s,@OBJDUMP@,$OBJDUMP,;t t
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s,@RANLIB@,$RANLIB,;t t
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s,@ac_ct_RANLIB@,$ac_ct_RANLIB,;t t
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s,@MIG@,$MIG,;t t
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@ -30,6 +30,9 @@
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/* Old hook values. */
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static void (*old_free_hook) __P ((__ptr_t ptr, __const __ptr_t));
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static __ptr_t (*old_malloc_hook) __P ((__malloc_size_t size, const __ptr_t));
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static __ptr_t (*old_memalign_hook) __P ((__malloc_size_t alignment,
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__malloc_size_t size,
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const __ptr_t));
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static __ptr_t (*old_realloc_hook) __P ((__ptr_t ptr, __malloc_size_t size,
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__const __ptr_t));
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@ -49,6 +52,8 @@ struct hdr
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unsigned long int magic; /* Magic number to check header integrity. */
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struct hdr *prev;
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struct hdr *next;
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__ptr_t block; /* Real block allocated, for memalign. */
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unsigned long int magic2; /* Extra, keeps us doubleword aligned. */
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};
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/* This is the beginning of the list of all memory blocks allocated.
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@ -100,6 +105,8 @@ checkhdr (hdr)
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case MAGICWORD:
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if (((char *) &hdr[1])[hdr->size] != MAGICBYTE)
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status = MCHECK_TAIL;
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else if ((hdr->magic2 ^ (uintptr_t) hdr->block) != MAGICWORD)
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status = MCHECK_HEAD;
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else
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status = MCHECK_OK;
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break;
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@ -190,10 +197,11 @@ freehook (ptr, caller)
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struct hdr *hdr = ((struct hdr *) ptr) - 1;
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checkhdr (hdr);
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hdr->magic = MAGICFREE;
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hdr->magic2 = MAGICFREE;
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unlink_blk (hdr);
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hdr->prev = hdr->next = NULL;
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flood (ptr, FREEFLOOD, hdr->size);
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ptr = (__ptr_t) hdr;
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ptr = hdr->block;
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}
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__free_hook = old_free_hook;
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if (old_free_hook != NULL)
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@ -226,6 +234,44 @@ mallochook (size, caller)
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hdr->size = size;
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link_blk (hdr);
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hdr->block = hdr;
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hdr->magic2 = (uintptr_t) hdr ^ MAGICWORD;
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((char *) &hdr[1])[size] = MAGICBYTE;
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flood ((__ptr_t) (hdr + 1), MALLOCFLOOD, size);
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return (__ptr_t) (hdr + 1);
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}
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static __ptr_t memalignhook __P ((__malloc_size_t, __malloc_size_t,
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const __ptr_t));
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static __ptr_t
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memalignhook (alignment, size, caller)
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__malloc_size_t alignment, size;
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const __ptr_t caller;
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{
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struct hdr *hdr;
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__malloc_size_t slop;
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char *block;
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if (pedantic)
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mcheck_check_all ();
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slop = (sizeof *hdr + alignment - 1) & -alignment;
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__memalign_hook = old_memalign_hook;
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if (old_memalign_hook != NULL)
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block = (*old_memalign_hook) (alignment, slop + size + 1, caller);
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else
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block = memalign (alignment, slop + size + 1);
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__memalign_hook = memalignhook;
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if (block == NULL)
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return NULL;
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hdr = ((struct hdr *) (block + slop)) - 1;
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hdr->size = size;
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link_blk (hdr);
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hdr->block = (__ptr_t) block;
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hdr->magic2 = (uintptr_t) block ^ MAGICWORD;
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((char *) &hdr[1])[size] = MAGICBYTE;
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flood ((__ptr_t) (hdr + 1), MALLOCFLOOD, size);
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return (__ptr_t) (hdr + 1);
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@ -261,6 +307,7 @@ reallochook (ptr, size, caller)
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}
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__free_hook = old_free_hook;
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__malloc_hook = old_malloc_hook;
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__memalign_hook = old_memalign_hook;
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__realloc_hook = old_realloc_hook;
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if (old_realloc_hook != NULL)
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hdr = (struct hdr *) (*old_realloc_hook) ((__ptr_t) hdr,
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@ -271,12 +318,15 @@ reallochook (ptr, size, caller)
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sizeof (struct hdr) + size + 1);
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__free_hook = freehook;
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__malloc_hook = mallochook;
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__memalign_hook = memalignhook;
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__realloc_hook = reallochook;
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if (hdr == NULL)
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return NULL;
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hdr->size = size;
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link_blk (hdr);
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hdr->block = hdr;
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hdr->magic2 = (uintptr_t) hdr ^ MAGICWORD;
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((char *) &hdr[1])[size] = MAGICBYTE;
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if (size > osize)
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flood ((char *) (hdr + 1) + osize, MALLOCFLOOD, size - osize);
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@ -334,6 +384,8 @@ mcheck (func)
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__free_hook = freehook;
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old_malloc_hook = __malloc_hook;
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__malloc_hook = mallochook;
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old_memalign_hook = __memalign_hook;
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__memalign_hook = memalignhook;
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old_realloc_hook = __realloc_hook;
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__realloc_hook = reallochook;
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mcheck_used = 1;
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49
scripts/abilist.awk
Normal file
49
scripts/abilist.awk
Normal file
@ -0,0 +1,49 @@
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# This awk script processes the output of objdump --dynamic-syms
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# into a simple format that should not change when the ABI is not changing.
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BEGIN { outpipe = "sort" }
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# Normalize columns.
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/^[0-9a-fA-F]+ / { sub(/ /, " - ") }
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# Skip undefineds.
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$4 == "*UND*" { next }
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# Skip locals.
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$2 == "l" { next }
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$2 == "g" || $2 == "w" && NF == 7 {
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weak = ($2 == "w") ? "weak" : "strong";
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type = $3;
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size = strtonum("0x" $5);
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version = $6;
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symbol = $7;
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gsub(/[()]/, "", version);
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if (version == "GLIBC_PRIVATE") next;
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if (type == "D" && $4 == ".tbss") {
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print symbol, version, weak, "TLS", size | outpipe;
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}
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else if (type == "DO" && $4 == "*ABS*") {
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print symbol, version, weak, "ABS" | outpipe;
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}
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else if (type == "DO") {
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print symbol, version, weak, "DATA", size | outpipe;
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}
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else if (type == "DF") {
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print symbol, version, weak, "FUNC" | outpipe;
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}
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else {
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print symbol, version, weak, "UNEXPECTED", type, $4, $5;
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}
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next;
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}
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# Header crapola.
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NF == 0 || /DYNAMIC SYMBOL TABLE/ || /file format/ { next }
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{
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print "Don't grok this line:", $0
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}
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Block a user