In glibc, sysdeps/i386/nptl/tls.h has
typedef struct
{
void *tcb; /* Pointer to the TCB. Not necessarily the
thread descriptor used by libpthread. */
dtv_t *dtv;
void *self; /* Pointer to the thread descriptor. */
int multiple_threads;
uintptr_t sysinfo;
uintptr_t stack_guard;
uintptr_t pointer_guard;
int gscope_flag;
int __glibc_reserved1;
/* Reservation of some values for the TM ABI. */
void *__private_tm[4];
/* GCC split stack support. */
void *__private_ss;
} tcbhead_t;
and sysdeps/x86_64/nptl/tls.h has
typedef struct
{
void *tcb; /* Pointer to the TCB. Not necessarily the
thread descriptor used by libpthread. */
dtv_t *dtv;
void *self; /* Pointer to the thread descriptor. */
int multiple_threads;
int gscope_flag;
uintptr_t sysinfo;
uintptr_t stack_guard;
uintptr_t pointer_guard;
unsigned long int vgetcpu_cache[2];
int __glibc_reserved1;
int __glibc_unused1;
/* Reservation of some values for the TM ABI. */
void *__private_tm[4];
/* GCC split stack support. */
void *__private_ss;
long int __glibc_reserved2;
/* Must be kept even if it is no longer used by glibc since programs,
like AddressSanitizer, depend on the size of tcbhead_t. */
__128bits __glibc_unused2[8][4] __attribute__ ((aligned (32)));
void *__padding[8];
} tcbhead_t;
The offsets of __private_tm are
i386: 36 bytes
x32: 48 bytes
x86_64: 80 bytes
and the offsets of pointer_guard are:
i386: 24 bytes
x32: 28 bytes
x86_64: 48 bytes
But config/linux/x86/tls.h had
#ifdef __x86_64__
#ifdef __LP64__
# define SEG_READ(OFS) "movq\t%%fs:(" #OFS "*8),%0"
# define SEG_WRITE(OFS) "movq\t%0,%%fs:(" #OFS "*8)"
# define SEG_DECODE_READ(OFS) SEG_READ(OFS) "\n\t" \
"rorq\t$17,%0\n\t" \
"xorq\t%%fs:48,%0"
# define SEG_ENCODE_WRITE(OFS) "xorq\t%%fs:48,%0\n\t" \
"rolq\t$17,%0\n\t" \
SEG_WRITE(OFS)
#else
// For X32.
# define SEG_READ(OFS) "movl\t%%fs:(" #OFS "*4),%0"
# define SEG_WRITE(OFS) "movl\t%0,%%fs:(" #OFS "*4)"
# define SEG_DECODE_READ(OFS) SEG_READ(OFS) "\n\t" \
"rorl\t$9,%0\n\t" \
"xorl\t%%fs:24,%0"
# define SEG_ENCODE_WRITE(OFS) "xorl\t%%fs:24,%0\n\t" \
"roll\t$9,%0\n\t" \
SEG_WRITE(OFS)
#endif
#else
# define SEG_READ(OFS) "movl\t%%gs:(" #OFS "*4),%0"
# define SEG_WRITE(OFS) "movl\t%0,%%gs:(" #OFS "*4)"
# define SEG_DECODE_READ(OFS) SEG_READ(OFS) "\n\t" \
"rorl\t$9,%0\n\t" \
"xorl\t%%gs:24,%0"
# define SEG_ENCODE_WRITE(OFS) "xorl\t%%gs:24,%0\n\t" \
"roll\t$9,%0\n\t" \
SEG_WRITE(OFS)
#endif
static inline struct gtm_thread *gtm_thr(void)
{
struct gtm_thread *r;
asm volatile (SEG_READ(10) : "=r"(r));
return r;
}
static inline void set_gtm_thr(struct gtm_thread *x)
{
asm volatile (SEG_WRITE(10) : : "r"(x));
}
static inline struct abi_dispatch *abi_disp(void)
{
struct abi_dispatch *r;
asm volatile (SEG_DECODE_READ(11) : "=r"(r));
return r;
}
static inline void set_abi_disp(struct abi_dispatch *x)
{
void *scratch;
asm volatile (SEG_ENCODE_WRITE(11) : "=r"(scratch) : "0"(x));
}
SEG_READ, SEG_WRITE, SEG_DECODE_READ and SEG_ENCODE_WRITE were correct
only for x86-64.
Update SEG_READ and SEG_WRITE to use the offset of __private_tm as base
and correct the offset of pointer_guard for x32. This patch doesn't
change ABI of libitm.
PR libitm/85988
* config/linux/x86/tls.h (SEG_READ): Use the offset of
__private_tm as base.
(SEG_WRITE): Likewise.
(SEG_ENCODE_WRITE): Correct the offset of pointer_guard for x32.
(gtm_thr): Replace SEG_READ(10) with SEG_READ(0).
(set_gtm_thr): Replace SEG_WRITE(10) with SEG_WRITE(0).
(abi_disp): Replace SEG_DECODE_READ(11) with SEG_DECODE_READ(1).
(set_abi_disp): Replace SEG_ENCODE_WRITE(11) with
SEG_ENCODE_WRITE(1).
From-SVN: r261491
2018-05-02 Tom de Vries <tom@codesourcery.com>
PR testsuite/85106
* gcc.dg/ipa/ipa-icf-38.c: Use scan-ltrans-tree-dump.
* lib/scanltranstree.exp: New file.
* lib/target-supports.exp (scan-ltrans-tree-dump_required_options)
(scan-ltrans-tree-dump-times_required_options)
(scan-ltrans-tree-dump-not_required_options)
(scan-ltrans-tree-dump-dem_required_options)
(scan-ltrans-tree-dump-dem-not_required_options): New proc.
* lib/gcc-dg.exp: Include scanltranstree.exp.
* testsuite/lib/libatomic.exp: Include scanltranstree.exp.
* testsuite/lib/libgomp.exp: Include scanltranstree.exp.
* testsuite/lib/libitm.exp: Include scanltranstree.exp.
* testsuite/lib/libvtv.exp: Include scanltranstree.exp.
* doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
dump files): Add ltrans-tree.
From-SVN: r259838
2018-05-02 Tom de Vries <tom@codesourcery.com>
PR testsuite/85106
* gcc.dg/ipa/ipa-icf-38.c: New test.
* gcc.dg/ipa/ipa-icf-38a.c: New test.
* lib/scandump.exp (dump-base): New proc.
(scan-dump, scan-dump-times, scan-dump-not, scan-dump-dem)
(scan-dump-dem-not): Add and handle parameter for suffix of the dump
base.
* lib/scanipa.exp: Add "" argument to scan-dump calls.
* lib/scanlang.exp: Same.
* lib/scanrtl.exp: Same.
* lib/scantree.exp: Same.
* lib/scanwpaipa.exp: New file.
* lib/gcc-dg.exp: Include scanwpaipa.exp.
* testsuite/lib/libatomic.exp: Include scanwpaipa.exp.
* testsuite/lib/libgomp.exp: Include scanwpaipa.exp.
* testsuite/lib/libitm.exp: Include scanwpaipa.exp.
* testsuite/lib/libvtv.exp: Include scanwpaipa.exp.
* doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
dump files): Add wpa-ipa.
From-SVN: r259837
Use unsigned integer to unwind shadow stack by replacing jle with jbe and
jg with ja.
PR target/85489
* config/x86/sjlj.S (GTM_longjmp): Replace jle/jg with jbe/ja.
From-SVN: r259559
* config/cet.m4 (GCC_CET_FLAGS): Default to --disable-cet, replace
--enable-cet=default with --enable-cet=auto.
* doc/install.texi: Document --disable-cet being the default and
--enable-cet=auto.
* configure: Regenerated.
From-SVN: r259487
PR jit/85384
* acx.m4 (GCC_BASE_VER): Remove \$\$ from sed expression.
* configure.ac (gcc-driver-name.h): Honor --with-gcc-major-version
by using gcc_base_ver to generate a gcc_driver_version, and use
it when generating GCC_DRIVER_NAME.
* configure: Regenerate.
* configure: Regenerate.
From-SVN: r259462
ENDBR32 and RDSSPD are multi-byte NOPs on x86-64 processors and
newer x86 processors, starting Pentium Pro. They are UD on older
32-bit processors. Detect this at configure time and adjust the
default value for enable_cet. GCC will enable CET in 32-bit run-time
libraries in any case if --enable-cet is used to configure GCC.
PR target/84148
* config/cet.m4: Check if target support multi-byte NOPS (SSE).
* libatomic/configure: Regenerate.
* libbacktrace/configure: Likewise.
* libgcc/configure: Likewise.
* libgfortran/configure: Likewise.
* libgomp/configure: Likewise.
* libitm/configure: Likewise.
* libmpx/configure: Likewise.
* libobjc/configure: Likewise.
* libquadmath/configure: Likewise.
* libsanitizer/configure: Likewise.
* libssp/configure: Likewise.
* libstdc++-v3/configure: Likewise.
* libvtv/configure: Likewise.
From-SVN: r257809
Expand the gtm_jmpbuf structure by one word field to add
Intel CET support further. The code in sjlj.S already
allocates more space on the stack then gtm_jmpbuf needs.
Use this extra space to absorb the new field.
The structure is allocated on the stack in such a way
that eip/rsp field is overlapped with return address on
the stack. Locate the new field right before eip/rsp so
code that accesses buffer fields relative to address of
gtm_jmpbuf has its offsets unchanged.
* libitm/config/x86/target.h: Add new field (ssp).
* libitm/config/x86/sjlj.S: Change offsets.
From-SVN: r254907
PR other/79046
libatomic/
* testsuite/Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead
of cat to get version from BASE-VER file.
* testsuite/Makefile.in: Regenerated.
libffi/
* configure.ac: Add GCC_BASE_VER.
* include/Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead
of cat to get version from BASE-VER file.
* configure: Regenerated.
* testsuite/Makefile.in: Regenerated.
* include/Makefile.in: Regenerated.
* Makefile.in: Regenerated.
* man/Makefile.in: Regenerated.
libgomp/
* testsuite/Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead
of cat to get version from BASE-VER file.
* testsuite/Makefile.in: Regenerated.
libitm/
* testsuite/Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead
of cat to get version from BASE-VER file.
* testsuite/Makefile.in: Regenerated.
libmpx/
* mpxrt/Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead
of cat to get version from BASE-VER file.
* mpxwrap/Makefile.am (gcc_version): Likewise.
* mpxrt/Makefile.in: Regenerated.
* mpxwrap/Makefile.in: Regenerated.
liboffloadmic/
* plugin/configure.ac: Add GCC_BASE_VER.
* plugin/Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead
of cat to get version from BASE-VER file.
* plugin/configure: Regenerated.
* plugin/aclocal.m4: Regenerated.
* plugin/Makefile.in: Regenerated.
libsanitizer/
* interception/Makefile.am (gcc_version): Use @get_gcc_base_ver@
instead of cat to get version from BASE-VER file.
* asan/Makefile.am (gcc_version): Likewise.
* ubsan/Makefile.am (gcc_version): Likewise.
* sanitizer_common/Makefile.am (gcc_version): Likewise.
* lsan/Makefile.am (gcc_version): Likewise.
* tsan/Makefile.am (gcc_version): Likewise.
* interception/Makefile.in: Regenerated.
* asan/Makefile.in: Regenerated.
* ubsan/Makefile.in: Regenerated.
* sanitizer_common/Makefile.in: Regenerated.
* lsan/Makefile.in: Regenerated.
* tsan/Makefile.in: Regenerated.
libvtv/
* testsuite/Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead
of cat to get version from BASE-VER file.
* testsuite/Makefile.in: Regenerated.
From-SVN: r244742
PR other/79046
* configure: Regenerated.
config/
* acx.m4 (GCC_BASE_VER): New m4 function.
(ACX_TOOL_DIRS): Require GCC_BASE_VER, for
--with-gcc-major-version-only use just major number from BASE-VER.
gcc/
* configure.ac: Add GCC_BASE_VER.
* Makefile.in (version): Use @get_gcc_base_ver@ instead of cat to get
version from BASE-VER file.
(CFLAGS-gcc.o): Add -DBASEVER=$(BASEVER_s).
(gcc.o): Depend on $(BASEVER).
* common.opt (dumpfullversion): New option.
* gcc.c (driver_handle_option): Handle OPT_dumpfullversion.
* doc/invoke.texi: Document -dumpfullversion.
* doc/install.texi: Document --with-gcc-major-version-only.
* configure: Regenerated.
libatomic/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* testsuite/Makefile.in: Regenerated.
* configure: Regenerated.
* Makefile.in: Regenerated.
libgomp/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* testsuite/Makefile.in: Regenerated.
* configure: Regenerated.
* Makefile.in: Regenerated.
libgcc/
* configure.ac: Add GCC_BASE_VER.
* Makefile.in (version): Use @get_gcc_base_ver@ instead of cat to get
version from BASE-VER file.
* configure: Regenerated.
libssp/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* configure: Regenerated.
* Makefile.in: Regenerated.
liboffloadmic/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* aclocal.m4: Include ../config/acx.m4.
* configure: Regenerated.
* Makefile.in: Regenerated.
libquadmath/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* configure: Regenerated.
* Makefile.in: Regenerated.
libmpx/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* configure: Regenerated.
* Makefile.in: Regenerated.
libada/
* configure.ac: Add GCC_BASE_VER.
* Makefile.in (version): Use @get_gcc_base_ver@ instead of cat to get
version from BASE-VER file.
* configure: Regenerated.
lto-plugin/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* configure: Regenerated.
* Makefile.in: Regenerated.
libitm/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* testsuite/Makefile.in: Regenerated.
* configure: Regenerated.
* Makefile.in: Regenerated.
fixincludes/
* configure.ac: Add GCC_BASE_VER.
* Makefile.in (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* configure: Regenerated.
libcilkrts/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* aclocal.m4: Include ../config/acx.m4.
* configure: Regenerated.
* Makefile.in: Regenerated.
libcc1/
* configure.ac: Add GCC_BASE_VER. For --with-gcc-major-version-only
use just major number from BASE-VER.
* configure: Regenerated.
* Makefile.in: Regenerated.
libobjc/
* configure.ac: Add GCC_BASE_VER.
* Makefile.in (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* configure: Regenerated.
libstdc++-v3/
* configure.ac: Add GCC_BASE_VER.
* fragment.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* po/Makefile.in: Regenerated.
* libsupc++/Makefile.in: Regenerated.
* testsuite/Makefile.in: Regenerated.
* src/Makefile.in: Regenerated.
* configure: Regenerated.
* Makefile.in: Regenerated.
* include/Makefile.in: Regenerated.
* doc/Makefile.in: Regenerated.
* python/Makefile.in: Regenerated.
* src/c++11/Makefile.in: Regenerated.
* src/c++98/Makefile.in: Regenerated.
* src/filesystem/Makefile.in: Regenerated.
libvtv/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* testsuite/Makefile.in: Regenerated.
* configure: Regenerated.
* Makefile.in: Regenerated.
libsanitizer/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* libbacktrace/Makefile.in: Regenerated.
* interception/Makefile.in: Regenerated.
* asan/Makefile.in: Regenerated.
* ubsan/Makefile.in: Regenerated.
* configure: Regenerated.
* sanitizer_common/Makefile.in: Regenerated.
* lsan/Makefile.in: Regenerated.
* Makefile.in: Regenerated.
* tsan/Makefile.in: Regenerated.
libgfortran/
* configure.ac: Add GCC_BASE_VER.
* Makefile.am (gcc_version): Use @get_gcc_base_ver@ instead of cat to
get version from BASE-VER file.
* configure: Regenerated.
* Makefile.in: Regenerated.
From-SVN: r244521
Also fix a stray changelog entry. Some of the regen here is due to
previous changes not being regenerated properly, in part due to the
missing configure dependencies.
* configure: Regenerate.
config/
* picflag.m4: Remove stray \xA0 in comment.
gcc/
* Makefile.in (aclocal_deps): Update and order as per aclocal.m4.
* configure: Regenerate.
* config.in: Regenerate.
libada/
* Makefile.in (configure_deps): Update and order as per
configure.ac sinclude.
* configure: Regenerate.
libgcc/
* Makefile.in (configure_deps): Update.
* configure: Regenerate.
libiberty/
* Makefile.in (configure_deps): Update.
* configure: Regenerate.
libitm/
* Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
From-SVN: r244049
Since GTM::gtm_thread has
gtm_thread *next_thread __attribute__((__aligned__(HW_CACHELINE_SIZE)));
GTM::gtm_thread::operator new () calls xmalloc with separate_cl == true.
xmalloc must return memory on cache line in this case.
PR libitm/70456
* util.cc (xmalloc): Use posix_memalign to allocate memory on
on cache line if requested.
From-SVN: r235211
The attached patch adds the a target specific attribute via the
new target macro TARGET_BEGIN_TRANSACTION_ATTRIBUTE to the
function begin_transaction(). S/390 uses this to set the
soft-float target attribute which is needed to fix a crash with
-m31.
As there seems to be no place in libitm to document internal macros like
USE_HTM_FASTPATH or the new macro, I've put the documentation in a
comment where the macro is used.
2016-03-03 Dominik Vogt <vogt@linux.vnet.ibm.com>
* config/s390/target.h (TARGET_BEGIN_TRANSACTION_ATTRIBUTE): Define
function attribute to disable floating point in begin_transaction() on
S/390.
* beginend.cc (begin_transaction): Use
TARGET_BEGIN_TRANSACTION_ATTRIBUTE.
From-SVN: r233929
This patch adds an easy way to write tests for expected multiline
output. For example we can test carets and underlines for
a particular diagnostic with:
/* { dg-begin-multiline-output "" }
typedef struct _GMutex GMutex;
^~~~~~~
{ dg-end-multiline-output "" } */
multiline.exp is used by prune.exp; hence we need to load it before
prune.exp via *load_gcc_lib* for the testsuites of the various
non-"gcc" support libraries (e.g. boehm-gc).
gcc/testsuite/ChangeLog:
* lib/multiline.exp: New file.
* lib/prune.exp: Load multiline.exp.
(prune_gcc_output): Call into multiline.exp to handle any
multiline output directives.
* lib/libgo.exp: Load multiline.exp before prune.exp, using
load_gcc_lib.
boehm-gc/ChangeLog:
* testsuite/lib/boehm-gc.exp: Load multiline.exp before
prune.exp, using load_gcc_lib.
libatomic/ChangeLog:
* testsuite/lib/libatomic.exp: Load multiline.exp before
prune.exp, using load_gcc_lib.
libgomp/ChangeLog:
* testsuite/lib/libgomp.exp: Load multiline.exp before prune.exp,
using load_gcc_lib.
libitm/ChangeLog:
* testsuite/lib/libitm.exp: Load multiline.exp before prune.exp,
using load_gcc_lib.
libvtv/ChangeLog:
* testsuite/lib/libvtv.exp: Load multiline.exp before prune.exp,
using load_gcc_lib.
From-SVN: r228655
