forked from rpms/glibc
74 lines
2.9 KiB
Diff
74 lines
2.9 KiB
Diff
commit 990c953bce06d77360d2e933faa9a008e2c55405
|
|
Author: Florian Weimer <fweimer@redhat.com>
|
|
Date: Fri Jan 14 20:16:05 2022 +0100
|
|
|
|
x86: Add x86-64-vN check to early startup
|
|
|
|
This ISA level covers the glibc build itself. <dl-hwcap-check.h>
|
|
cannot be used because this check (by design) happens before
|
|
DL_PLATFORM_INIT and the x86 CPU flags initialization.
|
|
|
|
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
|
|
|
|
diff --git a/sysdeps/x86/Makefile b/sysdeps/x86/Makefile
|
|
index 5ee06f94735e5189..36ca1a7126047b86 100644
|
|
--- a/sysdeps/x86/Makefile
|
|
+++ b/sysdeps/x86/Makefile
|
|
@@ -7,6 +7,7 @@ sysdep_routines += get-cpuid-feature-leaf
|
|
sysdep-dl-routines += dl-get-cpu-features
|
|
sysdep_headers += sys/platform/x86.h bits/platform/x86.h
|
|
|
|
+CFLAGS-dl-get-cpu-features.os += $(rtld-early-cflags)
|
|
CFLAGS-get-cpuid-feature-leaf.o += $(no-stack-protector)
|
|
|
|
tests += tst-get-cpu-features tst-get-cpu-features-static \
|
|
diff --git a/sysdeps/x86/dl-get-cpu-features.c b/sysdeps/x86/dl-get-cpu-features.c
|
|
index 839803c746f408ed..6ccde4404b13a725 100644
|
|
--- a/sysdeps/x86/dl-get-cpu-features.c
|
|
+++ b/sysdeps/x86/dl-get-cpu-features.c
|
|
@@ -20,6 +20,7 @@
|
|
|
|
#ifdef SHARED
|
|
# include <cpu-features.c>
|
|
+# include <gcc-macros.h>
|
|
|
|
/* NB: Normally, DL_PLATFORM_INIT calls init_cpu_features to initialize
|
|
CPU features in dynamic executable. But when loading ld.so inside of
|
|
@@ -36,7 +37,35 @@ _dl_x86_init_cpu_features (void)
|
|
{
|
|
struct cpu_features *cpu_features = __get_cpu_features ();
|
|
if (cpu_features->basic.kind == arch_kind_unknown)
|
|
- init_cpu_features (cpu_features);
|
|
+ {
|
|
+ init_cpu_features (cpu_features);
|
|
+
|
|
+# if IS_IN (rtld)
|
|
+ /* See isa-level.c. */
|
|
+# if defined GCCMACRO__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 \
|
|
+ && defined HAVE_X86_LAHF_SAHF && defined GCCMACRO__POPCNT__ \
|
|
+ && defined GCCMACRO__SSE3__ && defined GCCMACRO__SSSE3__ \
|
|
+ && defined GCCMACRO__SSE4_1__ && defined GCCMACRO__SSE4_2__
|
|
+ if (!(cpu_features->isa_1 & GNU_PROPERTY_X86_ISA_1_V2))
|
|
+ _dl_fatal_printf ("\
|
|
+Fatal glibc error: CPU does not support x86-64-v%d\n", 2);
|
|
+# if defined GCCMACRO__AVX__ && defined GCCMACRO__AVX2__ \
|
|
+ && defined GCCMACRO__F16C__ && defined GCCMACRO__FMA__ \
|
|
+ && defined GCCMACRO__LZCNT__ && defined HAVE_X86_MOVBE
|
|
+ if (!(cpu_features->isa_1 & GNU_PROPERTY_X86_ISA_1_V3))
|
|
+ _dl_fatal_printf ("\
|
|
+Fatal glibc error: CPU does not support x86-64-v%d\n", 3);
|
|
+# if defined GCCMACRO__AVX512F__ && defined GCCMACRO__AVX512BW__ \
|
|
+ && defined GCCMACRO__AVX512CD__ && defined GCCMACRO__AVX512DQ__ \
|
|
+ && defined GCCMACRO__AVX512VL__
|
|
+ if (!(cpu_features->isa_1 & GNU_PROPERTY_X86_ISA_1_V4))
|
|
+ _dl_fatal_printf ("\
|
|
+Fatal glibc error: CPU does not support x86-64-v%d\n", 4);
|
|
+# endif /* ISA level 4 */
|
|
+# endif /* ISA level 3 */
|
|
+# endif /* ISA level 2 */
|
|
+# endif /* IS_IN (rtld) */
|
|
+ }
|
|
}
|
|
|
|
__ifunc (__x86_cpu_features, __x86_cpu_features, NULL, void,
|