499 lines
18 KiB
Diff
499 lines
18 KiB
Diff
From 8923e4e9c79e672fd6b3b89aba598a60d5c01211 Mon Sep 17 00:00:00 2001
|
|
From: caiyinyu <caiyinyu@loongson.cn>
|
|
Date: Fri, 15 Sep 2023 17:35:19 +0800
|
|
Subject: [PATCH 25/29] LoongArch: Add glibc.cpu.hwcap support.
|
|
|
|
Key Points:
|
|
1. On lasx & lsx platforms, We must use _dl_runtime_{profile, resolve}_{lsx, lasx}
|
|
to save vector registers.
|
|
2. Via "tunables", users can choose str/mem_{lasx,lsx,unaligned} functions with
|
|
`export GLIBC_TUNABLES=glibc.cpu.hwcaps=LASX,...`.
|
|
Note: glibc.cpu.hwcaps doesn't affect _dl_runtime_{profile, resolve}_{lsx, lasx}
|
|
selection.
|
|
|
|
Usage Notes:
|
|
1. Only valid inputs: LASX, LSX, UAL. Case-sensitive, comma-separated, no spaces.
|
|
2. Example: `export GLIBC_TUNABLES=glibc.cpu.hwcaps=LASX,UAL` turns on LASX & UAL.
|
|
Unmentioned features turn off. With default ifunc: lasx > lsx > unaligned >
|
|
aligned > generic, effect is: lasx > unaligned > aligned > generic; lsx off.
|
|
3. Incorrect GLIBC_TUNABLES settings will show error messages.
|
|
For example: On lsx platforms, you cannot enable lasx features. If you do
|
|
that, you will get error messages.
|
|
4. Valid input examples:
|
|
- GLIBC_TUNABLES=glibc.cpu.hwcaps=LASX: lasx > aligned > generic.
|
|
- GLIBC_TUNABLES=glibc.cpu.hwcaps=LSX,UAL: lsx > unaligned > aligned > generic.
|
|
- GLIBC_TUNABLES=glibc.cpu.hwcaps=LASX,UAL,LASX,UAL,LSX,LASX,UAL: Repetitions
|
|
allowed but not recommended. Results in: lasx > lsx > unaligned > aligned >
|
|
generic.
|
|
|
|
Signed-off-by: Peng Fan <fanpeng@loongson.cn>
|
|
Signed-off-by: ticat_fp <fanpeng@loongson.cn>
|
|
---
|
|
sysdeps/loongarch/Makefile | 4 +
|
|
sysdeps/loongarch/Versions | 5 ++
|
|
sysdeps/loongarch/cpu-tunables.c | 89 +++++++++++++++++++
|
|
sysdeps/loongarch/dl-get-cpu-features.c | 25 ++++++
|
|
sysdeps/loongarch/dl-machine.h | 27 +++++-
|
|
sysdeps/loongarch/dl-tunables.list | 25 ++++++
|
|
.../unix/sysv/linux/loongarch/cpu-features.c | 29 ++++++
|
|
.../unix/sysv/linux/loongarch/cpu-features.h | 18 +++-
|
|
.../unix/sysv/linux/loongarch/dl-procinfo.c | 60 +++++++++++++
|
|
sysdeps/unix/sysv/linux/loongarch/dl-sysdep.c | 21 +++++
|
|
.../unix/sysv/linux/loongarch/libc-start.c | 34 +++++++
|
|
11 files changed, 329 insertions(+), 8 deletions(-)
|
|
create mode 100644 sysdeps/loongarch/Versions
|
|
create mode 100644 sysdeps/loongarch/cpu-tunables.c
|
|
create mode 100644 sysdeps/loongarch/dl-get-cpu-features.c
|
|
create mode 100644 sysdeps/loongarch/dl-tunables.list
|
|
create mode 100644 sysdeps/unix/sysv/linux/loongarch/cpu-features.c
|
|
create mode 100644 sysdeps/unix/sysv/linux/loongarch/dl-procinfo.c
|
|
create mode 100644 sysdeps/unix/sysv/linux/loongarch/dl-sysdep.c
|
|
create mode 100644 sysdeps/unix/sysv/linux/loongarch/libc-start.c
|
|
|
|
diff --git a/sysdeps/loongarch/Makefile b/sysdeps/loongarch/Makefile
|
|
index 43d2f583..30a1f4a8 100644
|
|
--- a/sysdeps/loongarch/Makefile
|
|
+++ b/sysdeps/loongarch/Makefile
|
|
@@ -6,6 +6,10 @@ ifeq ($(subdir),elf)
|
|
gen-as-const-headers += dl-link.sym
|
|
endif
|
|
|
|
+ifeq ($(subdir),elf)
|
|
+ sysdep-dl-routines += dl-get-cpu-features
|
|
+endif
|
|
+
|
|
# LoongArch's assembler also needs to know about PIC as it changes the
|
|
# definition of some assembler macros.
|
|
ASFLAGS-.os += $(pic-ccflag)
|
|
diff --git a/sysdeps/loongarch/Versions b/sysdeps/loongarch/Versions
|
|
new file mode 100644
|
|
index 00000000..33ae2cc0
|
|
--- /dev/null
|
|
+++ b/sysdeps/loongarch/Versions
|
|
@@ -0,0 +1,5 @@
|
|
+ld {
|
|
+ GLIBC_PRIVATE {
|
|
+ _dl_larch_get_cpu_features;
|
|
+ }
|
|
+}
|
|
diff --git a/sysdeps/loongarch/cpu-tunables.c b/sysdeps/loongarch/cpu-tunables.c
|
|
new file mode 100644
|
|
index 00000000..8e9fab93
|
|
--- /dev/null
|
|
+++ b/sysdeps/loongarch/cpu-tunables.c
|
|
@@ -0,0 +1,89 @@
|
|
+/* LoongArch CPU feature tuning.
|
|
+ This file is part of the GNU C Library.
|
|
+ Copyright (C) 2023 Free Software Foundation, Inc.
|
|
+
|
|
+ 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
|
|
+ <http://www.gnu.org/licenses/>. */
|
|
+
|
|
+# include <stdbool.h>
|
|
+# include <stdint.h>
|
|
+# include <unistd.h> /* Get STDOUT_FILENO for _dl_printf. */
|
|
+# include <elf/dl-tunables.h>
|
|
+# include <string.h>
|
|
+# include <cpu-features.h>
|
|
+# include <ldsodefs.h>
|
|
+# include <sys/auxv.h>
|
|
+
|
|
+# define HWCAP_LOONGARCH_IFUNC \
|
|
+ (HWCAP_LOONGARCH_UAL | HWCAP_LOONGARCH_LSX | HWCAP_LOONGARCH_LASX)
|
|
+
|
|
+# define CHECK_GLIBC_IFUNC_CPU_OFF(f, name, len) \
|
|
+ _Static_assert (sizeof (#name) - 1 == len, #name " != " #len); \
|
|
+ if (!memcmp (f, #name, len) && \
|
|
+ (GLRO (dl_hwcap) & HWCAP_LOONGARCH_##name)) \
|
|
+ { \
|
|
+ hwcap |= (HWCAP_LOONGARCH_##name | (~HWCAP_LOONGARCH_IFUNC)); \
|
|
+ break; \
|
|
+ } \
|
|
+
|
|
+attribute_hidden
|
|
+void
|
|
+TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp)
|
|
+{
|
|
+ const char *p = valp->strval;
|
|
+ size_t len;
|
|
+ unsigned long hwcap = 0;
|
|
+ const char *c;
|
|
+
|
|
+ do {
|
|
+ for (c = p; *c != ','; c++)
|
|
+ if (*c == '\0')
|
|
+ break;
|
|
+
|
|
+ len = c - p;
|
|
+
|
|
+ switch(len)
|
|
+ {
|
|
+ default:
|
|
+ _dl_fatal_printf (
|
|
+ "The valid values of glibc.cpu.hwcaps is UAL, LASX, LSX!!\n"
|
|
+ );
|
|
+ break;
|
|
+ case 3:
|
|
+ {
|
|
+ CHECK_GLIBC_IFUNC_CPU_OFF (p, LSX, 3);
|
|
+ CHECK_GLIBC_IFUNC_CPU_OFF (p, UAL, 3);
|
|
+ _dl_fatal_printf (
|
|
+ "Some features are invalid or not supported on this machine!!\n"
|
|
+ "The valid values of glibc.cpu.hwcaps is UAL, LASX, LSX!!\n"
|
|
+ );
|
|
+ }
|
|
+ break;
|
|
+ case 4:
|
|
+ {
|
|
+ CHECK_GLIBC_IFUNC_CPU_OFF (p, LASX, 4);
|
|
+ _dl_fatal_printf (
|
|
+ "Some features are invalid or not supported on this machine!!\n"
|
|
+ "The valid values of glibc.cpu.hwcaps is UAL, LASX, LSX!!\n"
|
|
+ );
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ p += len + 1;
|
|
+ }
|
|
+ while (*c != '\0');
|
|
+
|
|
+ GLRO (dl_larch_cpu_features).hwcap &= hwcap;
|
|
+}
|
|
diff --git a/sysdeps/loongarch/dl-get-cpu-features.c b/sysdeps/loongarch/dl-get-cpu-features.c
|
|
new file mode 100644
|
|
index 00000000..7cd9bc15
|
|
--- /dev/null
|
|
+++ b/sysdeps/loongarch/dl-get-cpu-features.c
|
|
@@ -0,0 +1,25 @@
|
|
+/* Define _dl_larch_get_cpu_features.
|
|
+ Copyright (C) 2023 Free Software Foundation, Inc.
|
|
+
|
|
+ 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 <ldsodefs.h>
|
|
+
|
|
+const struct cpu_features *
|
|
+_dl_larch_get_cpu_features (void)
|
|
+{
|
|
+ return &GLRO(dl_larch_cpu_features);
|
|
+}
|
|
diff --git a/sysdeps/loongarch/dl-machine.h b/sysdeps/loongarch/dl-machine.h
|
|
index 57913cef..b395a928 100644
|
|
--- a/sysdeps/loongarch/dl-machine.h
|
|
+++ b/sysdeps/loongarch/dl-machine.h
|
|
@@ -29,6 +29,8 @@
|
|
#include <dl-static-tls.h>
|
|
#include <dl-machine-rel.h>
|
|
|
|
+#include <cpu-features.c>
|
|
+
|
|
#ifndef _RTLD_PROLOGUE
|
|
# define _RTLD_PROLOGUE(entry) \
|
|
".globl\t" __STRING (entry) "\n\t" \
|
|
@@ -53,6 +55,23 @@
|
|
#define ELF_MACHINE_NO_REL 1
|
|
#define ELF_MACHINE_NO_RELA 0
|
|
|
|
+#define DL_PLATFORM_INIT dl_platform_init ()
|
|
+
|
|
+static inline void __attribute__ ((unused))
|
|
+dl_platform_init (void)
|
|
+{
|
|
+ if (GLRO(dl_platform) != NULL && *GLRO(dl_platform) == '\0')
|
|
+ /* Avoid an empty string which would disturb us. */
|
|
+ GLRO(dl_platform) = NULL;
|
|
+
|
|
+#ifdef SHARED
|
|
+ /* init_cpu_features has been called early from __libc_start_main in
|
|
+ static executable. */
|
|
+ init_cpu_features (&GLRO(dl_larch_cpu_features));
|
|
+#endif
|
|
+}
|
|
+
|
|
+
|
|
/* Return nonzero iff ELF header is compatible with the running host. */
|
|
static inline int
|
|
elf_machine_matches_host (const ElfW (Ehdr) *ehdr)
|
|
@@ -290,9 +309,9 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
|
|
if (profile != 0)
|
|
{
|
|
#if !defined __loongarch_soft_float
|
|
- if (SUPPORT_LASX)
|
|
+ if (RTLD_SUPPORT_LASX)
|
|
gotplt[0] = (ElfW(Addr)) &_dl_runtime_profile_lasx;
|
|
- else if (SUPPORT_LSX)
|
|
+ else if (RTLD_SUPPORT_LSX)
|
|
gotplt[0] = (ElfW(Addr)) &_dl_runtime_profile_lsx;
|
|
else
|
|
#endif
|
|
@@ -310,9 +329,9 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
|
|
indicated by the offset on the stack, and then jump to
|
|
the resolved address. */
|
|
#if !defined __loongarch_soft_float
|
|
- if (SUPPORT_LASX)
|
|
+ if (RTLD_SUPPORT_LASX)
|
|
gotplt[0] = (ElfW(Addr)) &_dl_runtime_resolve_lasx;
|
|
- else if (SUPPORT_LSX)
|
|
+ else if (RTLD_SUPPORT_LSX)
|
|
gotplt[0] = (ElfW(Addr)) &_dl_runtime_resolve_lsx;
|
|
else
|
|
#endif
|
|
diff --git a/sysdeps/loongarch/dl-tunables.list b/sysdeps/loongarch/dl-tunables.list
|
|
new file mode 100644
|
|
index 00000000..66b34275
|
|
--- /dev/null
|
|
+++ b/sysdeps/loongarch/dl-tunables.list
|
|
@@ -0,0 +1,25 @@
|
|
+# LoongArch specific tunables.
|
|
+# Copyright (C) 2023 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
|
|
+# <http://www.gnu.org/licenses/>.
|
|
+
|
|
+glibc {
|
|
+ cpu {
|
|
+ hwcaps {
|
|
+ type: STRING
|
|
+ }
|
|
+ }
|
|
+}
|
|
diff --git a/sysdeps/unix/sysv/linux/loongarch/cpu-features.c b/sysdeps/unix/sysv/linux/loongarch/cpu-features.c
|
|
new file mode 100644
|
|
index 00000000..1290c4ce
|
|
--- /dev/null
|
|
+++ b/sysdeps/unix/sysv/linux/loongarch/cpu-features.c
|
|
@@ -0,0 +1,29 @@
|
|
+/* Initialize CPU feature data. LoongArch64 version.
|
|
+ This file is part of the GNU C Library.
|
|
+ Copyright (C) 2023 Free Software Foundation, Inc.
|
|
+
|
|
+ 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
|
|
+ <http://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include <cpu-features.h>
|
|
+#include <elf/dl-hwcaps.h>
|
|
+#include <elf/dl-tunables.h>
|
|
+extern void TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *) attribute_hidden;
|
|
+
|
|
+static inline void
|
|
+init_cpu_features (struct cpu_features *cpu_features)
|
|
+{
|
|
+ GLRO (dl_larch_cpu_features).hwcap = GLRO (dl_hwcap);
|
|
+ TUNABLE_GET (glibc, cpu, hwcaps, tunable_val_t *, TUNABLE_CALLBACK (set_hwcaps));
|
|
+}
|
|
diff --git a/sysdeps/unix/sysv/linux/loongarch/cpu-features.h b/sysdeps/unix/sysv/linux/loongarch/cpu-features.h
|
|
index d1a280a5..450963ce 100644
|
|
--- a/sysdeps/unix/sysv/linux/loongarch/cpu-features.h
|
|
+++ b/sysdeps/unix/sysv/linux/loongarch/cpu-features.h
|
|
@@ -19,13 +19,23 @@
|
|
#ifndef _CPU_FEATURES_LOONGARCH64_H
|
|
#define _CPU_FEATURES_LOONGARCH64_H
|
|
|
|
+#include <stdint.h>
|
|
#include <sys/auxv.h>
|
|
|
|
-#define SUPPORT_UAL (GLRO (dl_hwcap) & HWCAP_LOONGARCH_UAL)
|
|
-#define SUPPORT_LSX (GLRO (dl_hwcap) & HWCAP_LOONGARCH_LSX)
|
|
-#define SUPPORT_LASX (GLRO (dl_hwcap) & HWCAP_LOONGARCH_LASX)
|
|
+struct cpu_features
|
|
+ {
|
|
+ uint64_t hwcap;
|
|
+ };
|
|
|
|
+/* Get a pointer to the CPU features structure. */
|
|
+extern const struct cpu_features *_dl_larch_get_cpu_features (void)
|
|
+ __attribute__ ((pure));
|
|
+
|
|
+#define SUPPORT_UAL (GLRO (dl_larch_cpu_features).hwcap & HWCAP_LOONGARCH_UAL)
|
|
+#define SUPPORT_LSX (GLRO (dl_larch_cpu_features).hwcap & HWCAP_LOONGARCH_LSX)
|
|
+#define SUPPORT_LASX (GLRO (dl_larch_cpu_features).hwcap & HWCAP_LOONGARCH_LASX)
|
|
+#define RTLD_SUPPORT_LSX (GLRO (dl_hwcap) & HWCAP_LOONGARCH_LSX)
|
|
+#define RTLD_SUPPORT_LASX (GLRO (dl_hwcap) & HWCAP_LOONGARCH_LASX)
|
|
#define INIT_ARCH()
|
|
|
|
#endif /* _CPU_FEATURES_LOONGARCH64_H */
|
|
-
|
|
diff --git a/sysdeps/unix/sysv/linux/loongarch/dl-procinfo.c b/sysdeps/unix/sysv/linux/loongarch/dl-procinfo.c
|
|
new file mode 100644
|
|
index 00000000..6217fda9
|
|
--- /dev/null
|
|
+++ b/sysdeps/unix/sysv/linux/loongarch/dl-procinfo.c
|
|
@@ -0,0 +1,60 @@
|
|
+/* Data for LoongArch64 version of processor capability information.
|
|
+ Linux version.
|
|
+ Copyright (C) 2023 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
|
|
+ <http://www.gnu.org/licenses/>. */
|
|
+
|
|
+/* If anything should be added here check whether the size of each string
|
|
+ is still ok with the given array size.
|
|
+
|
|
+ All the #ifdefs in the definitions are quite irritating but
|
|
+ necessary if we want to avoid duplicating the information. There
|
|
+ are three different modes:
|
|
+
|
|
+ - PROCINFO_DECL is defined. This means we are only interested in
|
|
+ declarations.
|
|
+
|
|
+ - PROCINFO_DECL is not defined:
|
|
+
|
|
+ + if SHARED is defined the file is included in an array
|
|
+ initializer. The .element = { ... } syntax is needed.
|
|
+
|
|
+ + if SHARED is not defined a normal array initialization is
|
|
+ needed.
|
|
+ */
|
|
+
|
|
+#ifndef PROCINFO_CLASS
|
|
+# define PROCINFO_CLASS
|
|
+#endif
|
|
+
|
|
+#if !IS_IN (ldconfig)
|
|
+# if !defined PROCINFO_DECL && defined SHARED
|
|
+ ._dl_larch_cpu_features
|
|
+# else
|
|
+PROCINFO_CLASS struct cpu_features _dl_larch_cpu_features
|
|
+# endif
|
|
+# ifndef PROCINFO_DECL
|
|
+= { }
|
|
+# endif
|
|
+# if !defined SHARED || defined PROCINFO_DECL
|
|
+;
|
|
+# else
|
|
+,
|
|
+# endif
|
|
+#endif
|
|
+
|
|
+#undef PROCINFO_DECL
|
|
+#undef PROCINFO_CLASS
|
|
diff --git a/sysdeps/unix/sysv/linux/loongarch/dl-sysdep.c b/sysdeps/unix/sysv/linux/loongarch/dl-sysdep.c
|
|
new file mode 100644
|
|
index 00000000..455fd71a
|
|
--- /dev/null
|
|
+++ b/sysdeps/unix/sysv/linux/loongarch/dl-sysdep.c
|
|
@@ -0,0 +1,21 @@
|
|
+/* Operating system support for run-time dynamic linker. LoongArch version.
|
|
+ Copyright (C) 2023 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
|
|
+ <http://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include <config.h>
|
|
+#include <sysdeps/loongarch/cpu-tunables.c>
|
|
+#include <sysdeps/unix/sysv/linux/dl-sysdep.c>
|
|
diff --git a/sysdeps/unix/sysv/linux/loongarch/libc-start.c b/sysdeps/unix/sysv/linux/loongarch/libc-start.c
|
|
new file mode 100644
|
|
index 00000000..f1346ece
|
|
--- /dev/null
|
|
+++ b/sysdeps/unix/sysv/linux/loongarch/libc-start.c
|
|
@@ -0,0 +1,34 @@
|
|
+/* Override csu/libc-start.c on LoongArch64.
|
|
+ Copyright (C) 2023 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
|
|
+ <http://www.gnu.org/licenses/>. */
|
|
+
|
|
+#ifndef SHARED
|
|
+
|
|
+/* Mark symbols hidden in static PIE for early self relocation to work. */
|
|
+# if BUILD_PIE_DEFAULT
|
|
+# pragma GCC visibility push(hidden)
|
|
+# endif
|
|
+
|
|
+# include <ldsodefs.h>
|
|
+# include <cpu-features.c>
|
|
+
|
|
+extern struct cpu_features _dl_larch_cpu_features;
|
|
+
|
|
+# define ARCH_INIT_CPU_FEATURES() init_cpu_features (&_dl_larch_cpu_features)
|
|
+
|
|
+#endif
|
|
+#include <csu/libc-start.c>
|
|
--
|
|
2.33.0
|
|
|