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glibc/glibc-upstream-2.39-17.patch
Arjun Shankar 24af28d49b Sync with upstream branch release/2.39/master 
Upstream commit: 5d070d12b3a52bc44dd1b71743abc4b6243862ae

- x86: Expand the comment on when REP STOSB is used on memset
- x86: Do not prefer ERMS for memset on Zen3+
- x86: Fix Zen3/Zen4 ERMS selection (BZ 30994)
- Add tst-gnu2-tls2mod1 to test-internal-extras
- elf: Enable TLS descriptor tests on aarch64
- arm: Update _dl_tlsdesc_dynamic to preserve caller-saved registers (BZ 31372)
- Ignore undefined symbols for -mtls-dialect=gnu2
- x86-64: Allocate state buffer space for RDI, RSI and RBX
- x86-64: Update _dl_tlsdesc_dynamic to preserve AMX registers
- x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers
- x86-64: Save APX registers in ld.so trampoline
- LoongArch: Correct {__ieee754, _}_scalb -> {__ieee754, _}_scalbf
- powerpc: Placeholder and infrastructure/build support to add Power11 related changes.
- powerpc: Add HWCAP3/HWCAP4 data to TCB for Power Architecture.
2024-04-04 17:12:08 +02:00

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commit aded2fc004e7ee85cf0b45b1382552d41e555a23
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Mar 12 13:21:20 2024 -0300
elf: Enable TLS descriptor tests on aarch64
The aarch64 uses 'trad' for traditional tls and 'desc' for tls
descriptors, but unlike other targets it defaults to 'desc'. The
gnutls2 configure check does not set aarch64 as an ABI that uses
TLS descriptors, which then disable somes stests.
Also rename the internal machinery fron gnu2 to tls descriptors.
Checked on aarch64-linux-gnu.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit 3d53d18fc71c5d9ef4773b8bce04d54b80181926)
diff --git a/configure b/configure
index 117b48a421792eda..432e40a59295cffd 100755
--- a/configure
+++ b/configure
@@ -653,7 +653,7 @@ LIBGD
libc_cv_cc_loop_to_function
libc_cv_cc_submachine
libc_cv_cc_nofma
-libc_cv_mtls_dialect_gnu2
+libc_cv_mtls_descriptor
libc_cv_has_glob_dat
libc_cv_fpie
libc_cv_z_execstack
@@ -4760,6 +4760,9 @@ libc_config_ok=no
# whether to use such directories.
with_fp_cond=1
+# A preconfigure script may define another name to TLS descriptor variant
+mtls_descriptor=gnu2
+
if frags=`ls -d $srcdir/sysdeps/*/preconfigure 2> /dev/null`
then
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for sysdeps preconfigure fragments" >&5
@@ -7006,9 +7009,9 @@ fi
printf "%s\n" "$libc_cv_has_glob_dat" >&6; }
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for -mtls-dialect=gnu2" >&5
-printf %s "checking for -mtls-dialect=gnu2... " >&6; }
-if test ${libc_cv_mtls_dialect_gnu2+y}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for tls descriptor support" >&5
+printf %s "checking for tls descriptor support... " >&6; }
+if test ${libc_cv_mtls_descriptor+y}
then :
printf %s "(cached) " >&6
else $as_nop
@@ -7019,7 +7022,7 @@ void foo (void)
i = 10;
}
EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=gnu2 -nostdlib -nostartfiles
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=$mtls_descriptor -nostdlib -nostartfiles
-shared conftest.c -o conftest 1>&5'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
@@ -7027,17 +7030,17 @@ if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=gnu2 -nostdlib -nost
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }
then
- libc_cv_mtls_dialect_gnu2=yes
+ libc_cv_mtls_descriptor=$mtls_descriptor
else
- libc_cv_mtls_dialect_gnu2=no
+ libc_cv_mtls_descriptor=no
fi
rm -f conftest*
fi
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_mtls_dialect_gnu2" >&5
-printf "%s\n" "$libc_cv_mtls_dialect_gnu2" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_mtls_descriptor" >&5
+printf "%s\n" "$libc_cv_mtls_descriptor" >&6; }
config_vars="$config_vars
-have-mtls-dialect-gnu2 = $libc_cv_mtls_dialect_gnu2"
+have-mtls-descriptor = $libc_cv_mtls_descriptor"
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if -Wno-ignored-attributes is required for aliases" >&5
printf %s "checking if -Wno-ignored-attributes is required for aliases... " >&6; }
diff --git a/configure.ac b/configure.ac
index 19b88a47a52508a1..bdc385d03c3dc7f5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -442,6 +442,9 @@ libc_config_ok=no
# whether to use such directories.
with_fp_cond=1
+# A preconfigure script may define another name to TLS descriptor variant
+mtls_descriptor=gnu2
+
dnl Let sysdeps/*/preconfigure act here.
LIBC_PRECONFIGURE([$srcdir], [for sysdeps])
@@ -1287,7 +1290,7 @@ fi
rm -f conftest*])
AC_SUBST(libc_cv_has_glob_dat)
-AC_CACHE_CHECK([for -mtls-dialect=gnu2], libc_cv_mtls_dialect_gnu2,
+AC_CACHE_CHECK([for tls descriptor support], libc_cv_mtls_descriptor,
[dnl
cat > conftest.c <<EOF
__thread int i;
@@ -1296,16 +1299,16 @@ void foo (void)
i = 10;
}
EOF
-if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=gnu2 -nostdlib -nostartfiles
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=$mtls_descriptor -nostdlib -nostartfiles
-shared conftest.c -o conftest 1>&AS_MESSAGE_LOG_FD])
then
- libc_cv_mtls_dialect_gnu2=yes
+ libc_cv_mtls_descriptor=$mtls_descriptor
else
- libc_cv_mtls_dialect_gnu2=no
+ libc_cv_mtls_descriptor=no
fi
rm -f conftest*])
-AC_SUBST(libc_cv_mtls_dialect_gnu2)
-LIBC_CONFIG_VAR([have-mtls-dialect-gnu2], [$libc_cv_mtls_dialect_gnu2])
+AC_SUBST(libc_cv_mtls_descriptor)
+LIBC_CONFIG_VAR([have-mtls-descriptor], [$libc_cv_mtls_descriptor])
dnl clang emits an warning for a double alias redirection, to warn the
dnl original symbol is sed even when weak definition overrides it.
diff --git a/elf/Makefile b/elf/Makefile
index 030db4d207d3491e..69aa423c4b90127d 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -999,13 +999,13 @@ modules-names-tests = $(filter-out ifuncmod% tst-tlsmod%,\
# For +depfiles in Makerules.
extra-test-objs += tst-auditmod17.os
-ifeq (yes,$(have-mtls-dialect-gnu2))
+ifneq (no,$(have-mtls-descriptor))
tests += tst-gnu2-tls1
modules-names += tst-gnu2-tls1mod
$(objpfx)tst-gnu2-tls1: $(objpfx)tst-gnu2-tls1mod.so
tst-gnu2-tls1mod.so-no-z-defs = yes
-CFLAGS-tst-gnu2-tls1mod.c += -mtls-dialect=gnu2
-endif # $(have-mtls-dialect-gnu2)
+CFLAGS-tst-gnu2-tls1mod.c += -mtls-dialect=$(have-mtls-descriptor)
+endif # $(have-mtls-descriptor)
ifeq (yes,$(have-protected-data))
modules-names += tst-protected1moda tst-protected1modb
@@ -2972,11 +2972,11 @@ $(objpfx)tst-tls-allocation-failure-static-patched.out: \
$(objpfx)tst-audit-tlsdesc: $(objpfx)tst-audit-tlsdesc-mod1.so \
$(objpfx)tst-audit-tlsdesc-mod2.so \
$(shared-thread-library)
-ifeq (yes,$(have-mtls-dialect-gnu2))
+ifneq (no,$(have-mtls-descriptor))
# The test is valid for all TLS types, but we want to exercise GNU2
# TLS if possible.
-CFLAGS-tst-audit-tlsdesc-mod1.c += -mtls-dialect=gnu2
-CFLAGS-tst-audit-tlsdesc-mod2.c += -mtls-dialect=gnu2
+CFLAGS-tst-audit-tlsdesc-mod1.c += -mtls-dialect=$(have-mtls-descriptor)
+CFLAGS-tst-audit-tlsdesc-mod2.c += -mtls-dialect=$(have-mtls-descriptor)
endif
$(objpfx)tst-audit-tlsdesc-dlopen: $(shared-thread-library)
$(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-audit-tlsdesc-mod1.so \
@@ -3055,11 +3055,11 @@ $(objpfx)tst-gnu2-tls2.out: \
$(objpfx)tst-gnu2-tls2mod1.so \
$(objpfx)tst-gnu2-tls2mod2.so
-ifeq (yes,$(have-mtls-dialect-gnu2))
-CFLAGS-tst-tlsgap-mod0.c += -mtls-dialect=gnu2
-CFLAGS-tst-tlsgap-mod1.c += -mtls-dialect=gnu2
-CFLAGS-tst-tlsgap-mod2.c += -mtls-dialect=gnu2
-CFLAGS-tst-gnu2-tls2mod0.c += -mtls-dialect=gnu2
-CFLAGS-tst-gnu2-tls2mod1.c += -mtls-dialect=gnu2
-CFLAGS-tst-gnu2-tls2mod2.c += -mtls-dialect=gnu2
+ifneq (no,$(have-mtls-descriptor))
+CFLAGS-tst-tlsgap-mod0.c += -mtls-dialect=$(have-mtls-descriptor)
+CFLAGS-tst-tlsgap-mod1.c += -mtls-dialect=$(have-mtls-descriptor)
+CFLAGS-tst-tlsgap-mod2.c += -mtls-dialect=$(have-mtls-descriptor)
+CFLAGS-tst-gnu2-tls2mod0.c += -mtls-dialect=$(have-mtls-descriptor)
+CFLAGS-tst-gnu2-tls2mod1.c += -mtls-dialect=$(have-mtls-descriptor)
+CFLAGS-tst-gnu2-tls2mod2.c += -mtls-dialect=$(have-mtls-descriptor)
endif
diff --git a/sysdeps/aarch64/preconfigure b/sysdeps/aarch64/preconfigure
index d9bd1f8558a079cb..19657b627bc84c4e 100644
--- a/sysdeps/aarch64/preconfigure
+++ b/sysdeps/aarch64/preconfigure
@@ -2,5 +2,6 @@ case "$machine" in
aarch64*)
base_machine=aarch64
machine=aarch64
+ mtls_descriptor=desc
;;
esac
diff --git a/sysdeps/arm/Makefile b/sysdeps/arm/Makefile
index d5cea717a9c201aa..619474eca94fe8e4 100644
--- a/sysdeps/arm/Makefile
+++ b/sysdeps/arm/Makefile
@@ -13,15 +13,15 @@ $(objpfx)libgcc-stubs.a: $(objpfx)aeabi_unwind_cpp_pr1.os
lib-noranlib: $(objpfx)libgcc-stubs.a
ifeq ($(build-shared),yes)
-ifeq (yes,$(have-mtls-dialect-gnu2))
+ifneq (no,$(have-mtls-descriptor))
tests += tst-armtlsdescloc tst-armtlsdescextnow tst-armtlsdescextlazy
modules-names += tst-armtlsdesclocmod
modules-names += tst-armtlsdescextlazymod tst-armtlsdescextnowmod
CPPFLAGS-tst-armtlsdescextnowmod.c += -Dstatic=
CPPFLAGS-tst-armtlsdescextlazymod.c += -Dstatic=
-CFLAGS-tst-armtlsdesclocmod.c += -mtls-dialect=gnu2
-CFLAGS-tst-armtlsdescextnowmod.c += -mtls-dialect=gnu2
-CFLAGS-tst-armtlsdescextlazymod.c += -mtls-dialect=gnu2
+CFLAGS-tst-armtlsdesclocmod.c += -mtls-dialect=$(have-mtls-descriptor)
+CFLAGS-tst-armtlsdescextnowmod.c += -mtls-dialect=$(have-mtls-descriptor)
+CFLAGS-tst-armtlsdescextlazymod.c += -mtls-dialect=$(have-mtls-descriptor)
LDFLAGS-tst-armtlsdescextnowmod.so += -Wl,-z,now
tst-armtlsdescloc-ENV = LD_BIND_NOW=1
tst-armtlsdescextnow-ENV = LD_BIND_NOW=1
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