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-rw-r--r--sysdeps/s390/cpu-features.c77
-rw-r--r--sysdeps/s390/cpu-features.h55
-rw-r--r--sysdeps/s390/dl-diagnostics-cpu.c37
-rw-r--r--sysdeps/s390/multiarch/ifunc-impl-list.c4
-rw-r--r--sysdeps/s390/multiarch/ifunc-resolve.h2
-rw-r--r--sysdeps/s390/s390-64/Makefile27
-rw-r--r--sysdeps/s390/s390-64/dl-hwcap-check.h21
-rw-r--r--sysdeps/s390/s390-64/dl-hwcaps-subdirs.c12
-rw-r--r--sysdeps/s390/s390-64/tst-glibc-hwcaps.c52
-rw-r--r--sysdeps/unix/sysv/linux/s390/sysconf.c2
10 files changed, 233 insertions, 56 deletions
diff --git a/sysdeps/s390/cpu-features.c b/sysdeps/s390/cpu-features.c
index 31a1f4d..106874b 100644
--- a/sysdeps/s390/cpu-features.c
+++ b/sysdeps/s390/cpu-features.c
@@ -27,7 +27,7 @@
#define S390_COPY_CPU_FEATURES(SRC_PTR, DEST_PTR) \
(DEST_PTR)->hwcap = (SRC_PTR)->hwcap; \
- (DEST_PTR)->stfle_bits[0] = (SRC_PTR)->stfle_bits[0];
+ (DEST_PTR)->stfle_filtered = (SRC_PTR)->stfle_filtered;
static void
TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp)
@@ -77,7 +77,7 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp)
disable = true;
hwcap_mask = HWCAP_S390_VXRS | HWCAP_S390_VXRS_EXT
| HWCAP_S390_VXRS_EXT2;
- stfle_bits0_mask = S390_STFLE_MASK_ARCH13_MIE3;
+ stfle_bits0_mask = S390_STFLE_BIT61_ARCH13_MIE3;
}
else if (tunable_str_comma_strcmp_cte (&t, "z13")
|| tunable_str_comma_strcmp_cte (&t, "arch11"))
@@ -85,7 +85,7 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp)
reset_features = true;
disable = true;
hwcap_mask = HWCAP_S390_VXRS_EXT | HWCAP_S390_VXRS_EXT2;
- stfle_bits0_mask = S390_STFLE_MASK_ARCH13_MIE3;
+ stfle_bits0_mask = S390_STFLE_BIT61_ARCH13_MIE3;
}
else if (tunable_str_comma_strcmp_cte (&t, "z14")
|| tunable_str_comma_strcmp_cte (&t, "arch12"))
@@ -93,12 +93,14 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp)
reset_features = true;
disable = true;
hwcap_mask = HWCAP_S390_VXRS_EXT2;
- stfle_bits0_mask = S390_STFLE_MASK_ARCH13_MIE3;
+ stfle_bits0_mask = S390_STFLE_BIT61_ARCH13_MIE3;
}
else if (tunable_str_comma_strcmp_cte (&t, "z15")
|| tunable_str_comma_strcmp_cte (&t, "z16")
+ || tunable_str_comma_strcmp_cte (&t, "z17")
|| tunable_str_comma_strcmp_cte (&t, "arch13")
- || tunable_str_comma_strcmp_cte (&t, "arch14"))
+ || tunable_str_comma_strcmp_cte (&t, "arch14")
+ || tunable_str_comma_strcmp_cte (&t, "arch15"))
{
/* For z15 or newer we don't have to disable something, but we have
to reset to the original values. */
@@ -125,7 +127,7 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp)
hwcap_mask |= HWCAP_S390_VXRS | HWCAP_S390_VXRS_EXT;
}
else if (tunable_str_comma_strcmp_cte (&t, "STFLE_MIE3"))
- stfle_bits0_mask = S390_STFLE_MASK_ARCH13_MIE3;
+ stfle_bits0_mask = S390_STFLE_BIT61_ARCH13_MIE3;
/* Perform the actions determined above. */
if (reset_features)
@@ -144,22 +146,26 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp)
if (stfle_bits0_mask != 0ULL)
{
if (disable)
- cpu_features_curr.stfle_bits[0] &= ~stfle_bits0_mask;
+ cpu_features_curr.stfle_filtered &= ~stfle_bits0_mask;
else
- cpu_features_curr.stfle_bits[0] |= stfle_bits0_mask;
+ cpu_features_curr.stfle_filtered |= stfle_bits0_mask;
}
}
/* Copy back the features after checking that no unsupported features were
enabled by user. */
cpu_features->hwcap = cpu_features_curr.hwcap & cpu_features_orig.hwcap;
- cpu_features->stfle_bits[0] = cpu_features_curr.stfle_bits[0]
- & cpu_features_orig.stfle_bits[0];
+ cpu_features->stfle_filtered = cpu_features_curr.stfle_filtered
+ & cpu_features_orig.stfle_filtered;
}
static inline void
-init_cpu_features (struct cpu_features *cpu_features)
+init_cpu_features_no_tunables (struct cpu_features *cpu_features)
{
+ /* Only initialize once. */
+ if (cpu_features->hwcap != 0)
+ return;
+
/* Fill cpu_features as passed by kernel and machine. */
cpu_features->hwcap = GLRO(dl_hwcap);
@@ -168,20 +174,57 @@ init_cpu_features (struct cpu_features *cpu_features)
&& (cpu_features->hwcap & HWCAP_S390_ZARCH)
&& (cpu_features->hwcap & HWCAP_S390_HIGH_GPRS)))
{
- register unsigned long reg0 __asm__("0") = 0;
+ unsigned long long stfle_bits[4] = { 0 };
+ register unsigned long reg0 __asm__("0") = 3;
__asm__ __volatile__(".machine push" "\n\t"
".machine \"z9-109\"" "\n\t"
".machinemode \"zarch_nohighgprs\"\n\t"
"stfle %0" "\n\t"
".machine pop" "\n"
- : "=QS" (cpu_features->stfle_bits[0]),
+ : "=QS" (stfle_bits[0]),
"+d" (reg0)
: : "cc");
+
+ unsigned long long internal_stfle_bits = 0;
+
+ /* Facility bit 34: z10: General instructions extension. */
+ if ((stfle_bits[0] & (1ULL << (63 - 34))) != 0)
+ internal_stfle_bits |= S390_STFLE_BIT34_Z10;
+
+ /* Facility bit 45: z196: Distinct operands, popcount, ... */
+ if ((stfle_bits[0] & (1ULL << (63 - 45))) != 0)
+ internal_stfle_bits |= S390_STFLE_BIT45_Z196;
+
+ /* Facility bit 61: arch13/z15: Miscellaneous-Instruction-Extensions
+ Facility 3, e.g. mvcrl. */
+ if ((stfle_bits[0] & (1ULL << (63 - 61))) != 0)
+ internal_stfle_bits |= S390_STFLE_BIT61_ARCH13_MIE3;
+
+ /* Facility bit 84: arch15/z17: Miscellaneous-instruction-extensions 4 */
+ if ((stfle_bits[1] & (1ULL << (127 - 84))) != 0)
+ internal_stfle_bits |= S390_STFLE_BIT84_ARCH15_MIE4;
+
+ /* Facility bit 198: arch15/z17: Vector-enhancements-facility 3 */
+ if ((stfle_bits[3] & (1ULL << (255 - 198))) != 0)
+ internal_stfle_bits |= S390_STFLE_BIT198_ARCH15_VXRS_EXT3;
+
+ /* Facility bit 199: arch15/z17: Vector-Packed-Decimal-Enhancement 3 */
+ if ((stfle_bits[3] & (1ULL << (255 - 199))) != 0)
+ internal_stfle_bits |= S390_STFLE_BIT199_ARCH15_VXRS_PDE3;
+
+ /* Facility bit 201: arch15/z17: CPU: Concurrent-Functions Facility */
+ if ((stfle_bits[3] & (1ULL << (255 - 201))) != 0)
+ internal_stfle_bits |= S390_STFLE_BIT201_ARCH15_CON;
+
+ cpu_features->stfle_orig = internal_stfle_bits;
+ cpu_features->stfle_filtered = internal_stfle_bits;
}
- else
- {
- cpu_features->stfle_bits[0] = 0ULL;
- }
+}
+
+static inline void
+init_cpu_features (struct cpu_features *cpu_features)
+{
+ init_cpu_features_no_tunables (cpu_features);
TUNABLE_GET (glibc, cpu, hwcaps, tunable_val_t *, TUNABLE_CALLBACK (set_hwcaps));
}
diff --git a/sysdeps/s390/cpu-features.h b/sysdeps/s390/cpu-features.h
index 4ff4421..2441b27 100644
--- a/sysdeps/s390/cpu-features.h
+++ b/sysdeps/s390/cpu-features.h
@@ -18,29 +18,58 @@
#ifndef __CPU_FEATURES_S390X_H
# define __CPU_FEATURES_S390X_H
-#define S390_STFLE_BITS_Z10 34 /* General instructions extension */
-#define S390_STFLE_BITS_Z196 45 /* Distinct operands, pop ... */
-#define S390_STFLE_BITS_ARCH13_MIE3 61 /* Miscellaneous-Instruction-Extensions
- Facility 3, e.g. mvcrl. */
+/* The following stfle bit definitions are intended to be used for the
+ glibc internal stfle_orig and stfle_filtered fields in cpu_features
+ struct. They can't be used on the double words retrieved by the
+ stfle-instruction. */
-#define S390_STFLE_MASK_ARCH13_MIE3 (1ULL << (63 - S390_STFLE_BITS_ARCH13_MIE3))
+/* Facility bit 34: z10: General instructions extension. */
+#define S390_STFLE_BIT34_Z10 (1ULL << 0)
+/* Facility bit 45: z196: Distinct operands, popcount, ... */
+#define S390_STFLE_BIT45_Z196 (1ULL << 1)
-#define S390_IS_ARCH13_MIE3(STFLE_BITS_ARRAY) \
- (((STFLE_BITS_ARRAY)[0] & S390_STFLE_MASK_ARCH13_MIE3) != 0)
+/* Facility bit 61: arch13/z15: Miscellaneous-Instruction-Extensions
+ Facility 3, e.g. mvcrl. */
+#define S390_STFLE_BIT61_ARCH13_MIE3 (1ULL << 2)
-#define S390_IS_Z196(STFLE_BITS_ARRAY) \
- (((STFLE_BITS_ARRAY)[0] & (1ULL << (63 - S390_STFLE_BITS_Z196))) != 0)
+/* Facility bit 84: arch15/z17: Miscellaneous-instruction-extensions
+ facility 4 */
+#define S390_STFLE_BIT84_ARCH15_MIE4 (1ULL << 3)
-#define S390_IS_Z10(STFLE_BITS_ARRAY) \
- (((STFLE_BITS_ARRAY)[0] & (1ULL << (63 - S390_STFLE_BITS_Z10))) != 0)
+/* Facility bit 198: arch15/z17: Vector-enhancements-facility 3 */
+#define S390_STFLE_BIT198_ARCH15_VXRS_EXT3 (1ULL << 4)
+
+/* Facility bit 199: arch15/z17: Vector-Packed-Decimal-Enhancement
+ Facility 3 */
+#define S390_STFLE_BIT199_ARCH15_VXRS_PDE3 (1ULL << 5)
+
+/* Facility bit 201: arch15/z17: CPU: Concurrent-Functions Facility */
+#define S390_STFLE_BIT201_ARCH15_CON (1ULL << 6)
+
+#define S390_IS_ARCH15(STFLE_BITS) \
+ ((((STFLE_BITS) & S390_STFLE_BIT84_ARCH15_MIE4) != 0) \
+ && (((STFLE_BITS) & S390_STFLE_BIT198_ARCH15_VXRS_EXT3) != 0) \
+ && (((STFLE_BITS) & S390_STFLE_BIT199_ARCH15_VXRS_PDE3) != 0) \
+ && (((STFLE_BITS) & S390_STFLE_BIT201_ARCH15_CON) != 0))
+
+#define S390_IS_ARCH13_MIE3(STFLE_BITS) \
+ (((STFLE_BITS) & S390_STFLE_BIT61_ARCH13_MIE3) != 0)
+
+#define S390_IS_Z196(STFLE_BITS) \
+ (((STFLE_BITS) & S390_STFLE_BIT45_Z196) != 0)
+
+#define S390_IS_Z10(STFLE_BITS) \
+ (((STFLE_BITS) & S390_STFLE_BIT34_Z10) != 0)
struct cpu_features
{
unsigned long int hwcap;
unsigned long int __reserved_hwcap2;
- unsigned long long stfle_bits[3];
- unsigned long long __reserved[11];
+ unsigned long long __reserved;
+ unsigned long long stfle_orig;
+ unsigned long long stfle_filtered;
+ unsigned long long __reserved2[11];
};
#endif /* __CPU_FEATURES_S390X_H */
diff --git a/sysdeps/s390/dl-diagnostics-cpu.c b/sysdeps/s390/dl-diagnostics-cpu.c
new file mode 100644
index 0000000..426af2d
--- /dev/null
+++ b/sysdeps/s390/dl-diagnostics-cpu.c
@@ -0,0 +1,37 @@
+/* Print CPU diagnostics data in ld.so. s390 version.
+ Copyright (C) 2025 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <dl-diagnostics.h>
+#include <ldsodefs.h>
+#include <cpu-features.h>
+
+static void
+print_cpu_features_value (const char *label, uint64_t value)
+{
+ _dl_printf ("s390.cpu_features.");
+ _dl_diagnostics_print_labeled_value (label, value);
+}
+
+void
+_dl_diagnostics_cpu (void)
+{
+ const struct cpu_features *cpu_features = &GLRO(dl_s390_cpu_features);
+ print_cpu_features_value ("hwcap", cpu_features->hwcap);
+ print_cpu_features_value ("stfle_orig", cpu_features->stfle_orig);
+ print_cpu_features_value ("stfle_filtered", cpu_features->stfle_filtered);
+}
diff --git a/sysdeps/s390/multiarch/ifunc-impl-list.c b/sysdeps/s390/multiarch/ifunc-impl-list.c
index 48c8ce1..14b1f763 100644
--- a/sysdeps/s390/multiarch/ifunc-impl-list.c
+++ b/sysdeps/s390/multiarch/ifunc-impl-list.c
@@ -81,8 +81,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Get hardware information. */
const struct cpu_features *features = &GLRO(dl_s390_cpu_features);
unsigned long int dl_hwcap __attribute__ ((unused)) = features->hwcap;
- const unsigned long long * __attribute__((unused)) stfle_bits
- = features->stfle_bits;
+ const unsigned long long __attribute__((unused)) stfle_bits
+ = features->stfle_filtered;
#if HAVE_MEMSET_IFUNC
IFUNC_IMPL (i, name, memset,
diff --git a/sysdeps/s390/multiarch/ifunc-resolve.h b/sysdeps/s390/multiarch/ifunc-resolve.h
index 34f3b0d..b28c503 100644
--- a/sysdeps/s390/multiarch/ifunc-resolve.h
+++ b/sysdeps/s390/multiarch/ifunc-resolve.h
@@ -23,7 +23,7 @@
#include <sys/auxv.h>
#define s390_libc_ifunc_expr_stfle_init() \
- const unsigned long long *stfle_bits = features->stfle_bits;
+ const unsigned long long stfle_bits = features->stfle_filtered;
#define s390_libc_ifunc_expr_init() \
const struct cpu_features *features = &GLRO(dl_s390_cpu_features); \
diff --git a/sysdeps/s390/s390-64/Makefile b/sysdeps/s390/s390-64/Makefile
index 66ed844..991025c 100644
--- a/sysdeps/s390/s390-64/Makefile
+++ b/sysdeps/s390/s390-64/Makefile
@@ -11,7 +11,8 @@ $(objpfx)tst-glibc-hwcaps: \
$(objpfx)libmarkermod2-1.so \
$(objpfx)libmarkermod3-1.so \
$(objpfx)libmarkermod4-1.so \
- $(objpfx)libmarkermod5-1.so
+ $(objpfx)libmarkermod5-1.so \
+ $(objpfx)libmarkermod6-1.so
$(objpfx)tst-glibc-hwcaps.out: \
$(objpfx)libmarkermod2.so \
$(objpfx)glibc-hwcaps/z13/libmarkermod2.so \
@@ -26,7 +27,14 @@ $(objpfx)tst-glibc-hwcaps.out: \
$(objpfx)glibc-hwcaps/z13/libmarkermod5.so \
$(objpfx)glibc-hwcaps/z14/libmarkermod5.so \
$(objpfx)glibc-hwcaps/z15/libmarkermod5.so \
- $(objpfx)glibc-hwcaps/z16/libmarkermod5.so
+ $(objpfx)glibc-hwcaps/z16/libmarkermod5.so \
+ $(objpfx)libmarkermod6.so \
+ $(objpfx)glibc-hwcaps/z13/libmarkermod6.so \
+ $(objpfx)glibc-hwcaps/z14/libmarkermod6.so \
+ $(objpfx)glibc-hwcaps/z15/libmarkermod6.so \
+ $(objpfx)glibc-hwcaps/z16/libmarkermod6.so \
+ $(objpfx)glibc-hwcaps/z17/libmarkermod6.so
+
$(objpfx)glibc-hwcaps/z13/libmarkermod2.so: $(objpfx)libmarkermod2-2.so
$(make-target-directory)
@@ -58,6 +66,21 @@ $(objpfx)glibc-hwcaps/z15/libmarkermod5.so: $(objpfx)libmarkermod5-4.so
$(objpfx)glibc-hwcaps/z16/libmarkermod5.so: $(objpfx)libmarkermod5-5.so
$(make-target-directory)
cp $< $@
+$(objpfx)glibc-hwcaps/z13/libmarkermod6.so: $(objpfx)libmarkermod6-2.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/z14/libmarkermod6.so: $(objpfx)libmarkermod6-3.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/z15/libmarkermod6.so: $(objpfx)libmarkermod6-4.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/z16/libmarkermod6.so: $(objpfx)libmarkermod6-5.so
+ $(make-target-directory)
+ cp $< $@
+$(objpfx)glibc-hwcaps/z17/libmarkermod6.so: $(objpfx)libmarkermod6-6.so
+ $(make-target-directory)
+ cp $< $@
ifeq (no,$(build-hardcoded-path-in-tests))
diff --git a/sysdeps/s390/s390-64/dl-hwcap-check.h b/sysdeps/s390/s390-64/dl-hwcap-check.h
index 815cf3e..736e654 100644
--- a/sysdeps/s390/s390-64/dl-hwcap-check.h
+++ b/sysdeps/s390/s390-64/dl-hwcap-check.h
@@ -25,8 +25,23 @@
static inline void
dl_hwcap_check (void)
{
-#if defined __ARCH__
-# if GCCMACRO__ARCH__ >= 14
+ /* Note: The s390x kernel won't introduce new HWCAP-Bits if there is
+ no special handling needed in kernel itself. Thus we have have
+ to check the facility-list retrieved with the stfle instruction.
+ We already have a common storage of this list in cpu-features.c.
+ This dl-hwcap-check.h file is included in
+ sysdeps/unix/sysv/linux/dl-sysdep.c, where also dl-machine.h and
+ cpu-features.c is included. Therefore we don't have a special
+ include here. */
+
+#if defined GCCMACRO__ARCH__
+# if GCCMACRO__ARCH__ >= 15
+ init_cpu_features_no_tunables (&GLRO(dl_s390_cpu_features));
+ if (!(S390_IS_ARCH15 (GLRO(dl_s390_cpu_features).stfle_orig)))
+ _dl_fatal_printf ("\
+Fatal glibc error: CPU lacks VXRS_EXT3/VXRS_PDE3/MIE4/Concurrent-functions \
+support (z17 or later required)\n");
+# elif GCCMACRO__ARCH__ >= 14
if (!(GLRO(dl_hwcap) & HWCAP_S390_VXRS_PDE2))
_dl_fatal_printf ("\
Fatal glibc error: CPU lacks VXRS_PDE2 support (z16 or later required)\n");
@@ -39,7 +54,7 @@ Fatal glibc error: CPU lacks VXRS_EXT2 support (z15 or later required)\n");
_dl_fatal_printf ("\
Fatal glibc error: CPU lacks VXE support (z14 or later required)\n");
# endif
-#endif /* __ARCH__ */
+#endif /* GCCMACRO__ARCH__ */
}
#endif /* _DL_HWCAP_CHECK_H */
diff --git a/sysdeps/s390/s390-64/dl-hwcaps-subdirs.c b/sysdeps/s390/s390-64/dl-hwcaps-subdirs.c
index 32fdabd..1ae9fdd 100644
--- a/sysdeps/s390/s390-64/dl-hwcaps-subdirs.c
+++ b/sysdeps/s390/s390-64/dl-hwcaps-subdirs.c
@@ -19,9 +19,10 @@
#include <dl-hwcaps.h>
#include <ldsodefs.h>
#include <sys/auxv.h>
+#include <cpu-features.h>
-const char _dl_hwcaps_subdirs[] = "z16:z15:z14:z13";
-enum { subdirs_count = 4 }; /* Number of components in _dl_hwcaps_subdirs. */
+const char _dl_hwcaps_subdirs[] = "z17:z16:z15:z14:z13";
+enum { subdirs_count = 5 }; /* Number of components in _dl_hwcaps_subdirs. */
uint32_t
_dl_hwcaps_subdirs_active (void)
@@ -58,5 +59,12 @@ _dl_hwcaps_subdirs_active (void)
return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
++active;
+ /* z17.
+ Note: The kernel has not introduced new HWCAP bits as the new facilities do
+ not require kernel interaction. Thus we check the features via stfle. */
+ if (!(S390_IS_ARCH15 (GLRO(dl_s390_cpu_features).stfle_orig)))
+ return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
+ ++active;
+
return _dl_hwcaps_subdirs_build_bitmask (subdirs_count, active);
}
diff --git a/sysdeps/s390/s390-64/tst-glibc-hwcaps.c b/sysdeps/s390/s390-64/tst-glibc-hwcaps.c
index 1652bd7..b9d8781 100644
--- a/sysdeps/s390/s390-64/tst-glibc-hwcaps.c
+++ b/sysdeps/s390/s390-64/tst-glibc-hwcaps.c
@@ -26,35 +26,53 @@ extern int marker2 (void);
extern int marker3 (void);
extern int marker4 (void);
extern int marker5 (void);
+extern int marker6 (void);
/* Return the arch level, 10 for the baseline libmarkermod*.so's. */
static int
compute_level (void)
{
const char *platform = (const char *) getauxval (AT_PLATFORM);
+ const unsigned long int hwcap = getauxval (AT_HWCAP);
+ const int latest_level = 15;
/* The arch* versions refer to the edition of the Principles of
Operation, and they are off by two when compared with the recent
product names. (The code below should not be considered an
accurate mapping to Principles of Operation editions for earlier
AT_PLATFORM strings). */
- if (strcmp (platform, "z900") == 0)
- return 10;
- if (strcmp (platform, "z990") == 0)
- return 10;
- if (strcmp (platform, "z9-109") == 0)
- return 10;
- if (strcmp (platform, "z10") == 0)
- return 10;
- if (strcmp (platform, "z196") == 0)
- return 10;
- if (strcmp (platform, "zEC12") == 0)
- return 10;
+ if ((strcmp (platform, "z900") == 0)
+ || (strcmp (platform, "z990") == 0)
+ || (strcmp (platform, "z9-109") == 0)
+ || (strcmp (platform, "z10") == 0)
+ || (strcmp (platform, "z196") == 0)
+ || (strcmp (platform, "zEC12") == 0))
+ {
+ if ((hwcap & HWCAP_S390_VX) == 0)
+ {
+ /* As vector-support was introduced with the newer z13
+ architecture, we are really on one of the tested older
+ architectures. */
+ return 10;
+ }
+ else
+ {
+ /* According to AT_PLATFORM we are on an older architecture
+ without vector-support, but according to HWCAPs vector
+ registers are supported. This means we are running on a
+ new architecture which is not yet known by the kernel.
+ Thus the default AT_PLATFORM string is used, which is the
+ oldest supported one. For this test, assume we are on
+ the latest known architecture. See
+ <kernel>/arch/s390/kernel/processor.c:setup_elf_platform().
+ */
+ return latest_level;
+ }
+ }
/* If we are running on z13 or newer and the kernel was booted with novx,
then AT_PLATFORM is z13 or newer, but _dl_hwcaps_subdirs_active will
return zero and the _dl_hwcaps_subdirs are not searched. */
- const unsigned long int hwcap = getauxval (AT_HWCAP);
if ((hwcap & HWCAP_S390_VX) == 0)
return 10;
@@ -66,9 +84,12 @@ compute_level (void)
return 13;
if (strcmp (platform, "z16") == 0)
return 14;
+ if (strcmp (platform, "z17") == 0)
+ return latest_level;
+
printf ("warning: unrecognized AT_PLATFORM value: %s\n", platform);
- /* Assume that the new platform supports z16. */
- return 14;
+ /* Assume that the new platform supports the latest known architecture. */
+ return latest_level;
}
static int
@@ -80,6 +101,7 @@ do_test (void)
TEST_COMPARE (marker3 (), MIN (level - 9, 3));
TEST_COMPARE (marker4 (), MIN (level - 9, 4));
TEST_COMPARE (marker5 (), MIN (level - 9, 5));
+ TEST_COMPARE (marker6 (), MIN (level - 9, 6));
return 0;
}
diff --git a/sysdeps/unix/sysv/linux/s390/sysconf.c b/sysdeps/unix/sysv/linux/s390/sysconf.c
index 8386523..dcb335a 100644
--- a/sysdeps/unix/sysv/linux/s390/sysconf.c
+++ b/sysdeps/unix/sysv/linux/s390/sysconf.c
@@ -66,7 +66,7 @@ get_cache_info (int level, int attr, int type)
return 0L;
}
- if (!S390_IS_Z10 (features->stfle_bits))
+ if (!S390_IS_Z10 (features->stfle_orig))
{
/* We are at least on a z9 machine.
Return 256byte for LINESIZE for L1 d/i-cache,
generated by cgit v1.1 at 2025-05-06 22:44:34 +0000