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From 9b2057696dae6abc6c69c124ff3325b0e1a48422 Mon Sep 17 00:00:00 2001
From: mengqinggang <mengqinggang@loongson.cn>
Date: Wed, 8 May 2024 10:06:15 +0800
Subject: [PATCH 04/15] LoongArch: Add support for TLS Descriptors
This is mostly based on AArch64 and RISC-V implementation.
Add R_LARCH_TLS_DESC32 and R_LARCH_TLS_DESC64 relocations.
For _dl_tlsdesc_dynamic function slow path, temporarily save and restore
all vector registers.
---
config.h.in | 3 +
elf/elf.h | 2 +
sysdeps/loongarch/Makefile | 34 ++-
sysdeps/loongarch/configure | 33 +++
sysdeps/loongarch/configure.ac | 16 ++
sysdeps/loongarch/dl-machine.h | 52 +++-
sysdeps/loongarch/dl-tls.h | 9 +-
sysdeps/loongarch/dl-tlsdesc.S | 436 ++++++++++++++++++++++++++++++
sysdeps/loongarch/dl-tlsdesc.h | 49 ++++
sysdeps/loongarch/linkmap.h | 3 +-
sysdeps/loongarch/preconfigure | 1 +
sysdeps/loongarch/sys/asm.h | 1 +
sysdeps/loongarch/sys/regdef.h | 1 +
sysdeps/loongarch/tlsdesc.c | 39 +++
sysdeps/loongarch/tlsdesc.sym | 28 ++
sysdeps/loongarch/tst-gnu2-tls2.h | 377 ++++++++++++++++++++++++++
16 files changed, 1076 insertions(+), 8 deletions(-)
create mode 100644 sysdeps/loongarch/dl-tlsdesc.S
create mode 100644 sysdeps/loongarch/dl-tlsdesc.h
create mode 100644 sysdeps/loongarch/tlsdesc.c
create mode 100644 sysdeps/loongarch/tlsdesc.sym
create mode 100644 sysdeps/loongarch/tst-gnu2-tls2.h
diff --git a/config.h.in b/config.h.in
index 44a34072..7b5283ba 100644
--- a/config.h.in
+++ b/config.h.in
@@ -141,6 +141,9 @@
/* LOONGARCH floating-point ABI for ld.so. */
#undef LOONGARCH_ABI_FRLEN
+/* Define whether compiler support vector. */
+#undef HAVE_LOONGARCH_VEC_COM
+
/* Linux specific: minimum supported kernel version. */
#undef __LINUX_KERNEL_VERSION
diff --git a/elf/elf.h b/elf/elf.h
index 3dbc7c0f..a4695042 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -4125,6 +4125,8 @@ enum
#define R_LARCH_TLS_TPREL32 10
#define R_LARCH_TLS_TPREL64 11
#define R_LARCH_IRELATIVE 12
+#define R_LARCH_TLS_DESC32 13
+#define R_LARCH_TLS_DESC64 14
/* Reserved for future relocs that the dynamic linker must understand. */
diff --git a/sysdeps/loongarch/Makefile b/sysdeps/loongarch/Makefile
index 446bda65..a4ee915e 100644
--- a/sysdeps/loongarch/Makefile
+++ b/sysdeps/loongarch/Makefile
@@ -1,5 +1,7 @@
ifeq ($(subdir),misc)
-sysdep_headers += sys/asm.h
+sysdep_headers += \
+ sys/asm.h \
+ # sysdep_headers
tests += \
tst-hwcap-tunables \
@@ -9,21 +11,45 @@ tst-hwcap-tunables-ARGS = -- $(host-test-program-cmd)
endif
ifeq ($(subdir),elf)
-gen-as-const-headers += dl-link.sym
+sysdep-dl-routines += \
+ dl-tlsdesc \
+ tlsdesc \
+ # sysdep-dl-routines
+
+gen-as-const-headers += \
+ dl-link.sym \
+ # gen-as-const-headers
+endif
+
+ifeq ($(subdir),csu)
+gen-as-const-headers += \
+ tlsdesc.sym \
+ # gen-as-const-headers
endif
ifeq ($(subdir),elf)
sysdep-dl-routines += \
dl-get-cpu-features \
# sysdep-dl-routines
+
+# Disable the compiler from using LSX for TLS descriptor tests, or storing into
+# 16B TLS variable may clobber FP/vector registers and prevent us from checking
+# their contents.
+CFLAGS-tst-gnu2-tls2mod0.c += -mno-lsx
+CFLAGS-tst-gnu2-tls2mod1.c += -mno-lsx
+CFLAGS-tst-gnu2-tls2mod2.c += -mno-lsx
endif
# LoongArch's assembler also needs to know about PIC as it changes the
# definition of some assembler macros.
-ASFLAGS-.os += $(pic-ccflag)
+ASFLAGS-.os += \
+ $(pic-ccflag) \
+ # ASFLAGS-.os
# All the objects in lib*_nonshared.a need to be compiled with medium code
# model or large applications may fail to link.
ifeq (yes,$(have-cmodel-medium))
-CFLAGS-.oS += -mcmodel=medium
+CFLAGS-.oS += \
+ -mcmodel=medium \
+ # CFLAGS-.oS
endif
diff --git a/sysdeps/loongarch/configure b/sysdeps/loongarch/configure
index 4df1c12e..a133821f 100644
--- a/sysdeps/loongarch/configure
+++ b/sysdeps/loongarch/configure
@@ -132,3 +132,36 @@ if test $libc_cv_loongarch_vec_asm = no; then
as_fn_error $? "binutils version is too old, use 2.41 or newer version" "$LINENO" 5
fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for vector support in compiler" >&5
+printf %s "checking for vector support in compiler... " >&6; }
+if test ${libc_cv_loongarch_vec_com+y}
+then :
+ printf %s "(cached) " >&6
+else $as_nop
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+void foo (void)
+{
+ asm volatile ("vldi \$vr0, 1" ::: "\$vr0");
+ asm volatile ("xvldi \$xr0, 1" ::: "\$xr0");
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+ libc_cv_loongarch_vec_com=yes
+else $as_nop
+ libc_cv_loongarch_vec_com=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_loongarch_vec_com" >&5
+printf "%s\n" "$libc_cv_loongarch_vec_com" >&6; }
+if test "$libc_cv_loongarch_vec_com" = yes ;
+then
+ printf "%s\n" "#define HAVE_LOONGARCH_VEC_COM 1" >>confdefs.h
+
+fi
diff --git a/sysdeps/loongarch/configure.ac b/sysdeps/loongarch/configure.ac
index 0219c66c..9b1cf26e 100644
--- a/sysdeps/loongarch/configure.ac
+++ b/sysdeps/loongarch/configure.ac
@@ -77,3 +77,19 @@ rm -f conftest*])
if test $libc_cv_loongarch_vec_asm = no; then
AC_MSG_ERROR([binutils version is too old, use 2.41 or newer version])
fi
+
+AC_CACHE_CHECK([for vector support in compiler],
+ libc_cv_loongarch_vec_com, [
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+void foo (void)
+{
+ asm volatile ("vldi $vr0, 1" ::: "$vr0");
+ asm volatile ("xvldi $xr0, 1" ::: "$xr0");
+}
+]])],
+ [libc_cv_loongarch_vec_com=yes],
+ [libc_cv_loongarch_vec_com=no])])
+if test "$libc_cv_loongarch_vec_com" = yes ;
+then
+ AC_DEFINE(HAVE_LOONGARCH_VEC_COM)
+fi
diff --git a/sysdeps/loongarch/dl-machine.h b/sysdeps/loongarch/dl-machine.h
index befb29a3..222d51a8 100644
--- a/sysdeps/loongarch/dl-machine.h
+++ b/sysdeps/loongarch/dl-machine.h
@@ -25,7 +25,7 @@
#include <entry.h>
#include <elf/elf.h>
#include <sys/asm.h>
-#include <dl-tls.h>
+#include <dl-tlsdesc.h>
#include <dl-static-tls.h>
#include <dl-machine-rel.h>
@@ -205,6 +205,36 @@ elf_machine_rela (struct link_map *map, struct r_scope_elem *scope[],
*addr_field = TLS_TPREL_VALUE (sym_map, sym) + reloc->r_addend;
break;
+ case __WORDSIZE == 64 ? R_LARCH_TLS_DESC64 : R_LARCH_TLS_DESC32:
+ {
+ struct tlsdesc volatile *td = (struct tlsdesc volatile *)addr_field;
+ if (sym == NULL)
+ {
+ td->arg = (void*)reloc->r_addend;
+ td->entry = _dl_tlsdesc_undefweak;
+ }
+ else
+ {
+# ifndef SHARED
+ CHECK_STATIC_TLS (map, sym_map);
+# else
+ if (!TRY_STATIC_TLS (map, sym_map))
+ {
+ td->arg = _dl_make_tlsdesc_dynamic (sym_map,
+ sym->st_value + reloc->r_addend);
+ td->entry = _dl_tlsdesc_dynamic;
+ }
+ else
+# endif
+ {
+ td->arg = (void *)(TLS_TPREL_VALUE (sym_map, sym)
+ + reloc->r_addend);
+ td->entry = _dl_tlsdesc_return;
+ }
+ }
+ break;
+ }
+
case R_LARCH_COPY:
{
if (sym == NULL)
@@ -273,6 +303,26 @@ elf_machine_lazy_rel (struct link_map *map, struct r_scope_elem *scope[],
else
*reloc_addr = map->l_mach.plt;
}
+ else if (__glibc_likely (r_type == R_LARCH_TLS_DESC64)
+ || __glibc_likely (r_type == R_LARCH_TLS_DESC32))
+ {
+ const Elf_Symndx symndx = ELFW (R_SYM) (reloc->r_info);
+ const ElfW (Sym) *symtab = (const void *)D_PTR (map, l_info[DT_SYMTAB]);
+ const ElfW (Sym) *sym = &symtab[symndx];
+ const struct r_found_version *version = NULL;
+
+ if (map->l_info[VERSYMIDX (DT_VERSYM)] != NULL)
+ {
+ const ElfW (Half) *vernum = (const void *)D_PTR (map,
+ l_info[VERSYMIDX (DT_VERSYM)]);
+ version = &map->l_versions[vernum[symndx] & 0x7fff];
+ }
+
+ /* Always initialize TLS descriptors completely, because lazy
+ initialization requires synchronization at every TLS access. */
+ elf_machine_rela (map, scope, reloc, sym, version, reloc_addr,
+ skip_ifunc);
+ }
else
_dl_reloc_bad_type (map, r_type, 1);
}
diff --git a/sysdeps/loongarch/dl-tls.h b/sysdeps/loongarch/dl-tls.h
index a551594b..1ca37648 100644
--- a/sysdeps/loongarch/dl-tls.h
+++ b/sysdeps/loongarch/dl-tls.h
@@ -16,6 +16,9 @@
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
+#ifndef _DL_TLS_H
+#define _DL_TLS_H
+
/* Type used for the representation of TLS information in the GOT. */
typedef struct
{
@@ -23,6 +26,8 @@ typedef struct
unsigned long int ti_offset;
} tls_index;
+extern void *__tls_get_addr (tls_index *ti);
+
/* The thread pointer points to the first static TLS block. */
#define TLS_TP_OFFSET 0
@@ -37,10 +42,10 @@ typedef struct
/* Compute the value for a DTPREL reloc. */
#define TLS_DTPREL_VALUE(sym) ((sym)->st_value - TLS_DTV_OFFSET)
-extern void *__tls_get_addr (tls_index *ti);
-
#define GET_ADDR_OFFSET (ti->ti_offset + TLS_DTV_OFFSET)
#define __TLS_GET_ADDR(__ti) (__tls_get_addr (__ti) - TLS_DTV_OFFSET)
/* Value used for dtv entries for which the allocation is delayed. */
#define TLS_DTV_UNALLOCATED ((void *) -1l)
+
+#endif
diff --git a/sysdeps/loongarch/dl-tlsdesc.S b/sysdeps/loongarch/dl-tlsdesc.S
new file mode 100644
index 00000000..15d5fa1c
--- /dev/null
+++ b/sysdeps/loongarch/dl-tlsdesc.S
@@ -0,0 +1,436 @@
+/* Thread-local storage handling in the ELF dynamic linker.
+ LoongArch version.
+ Copyright (C) 2024 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 <sysdep.h>
+#include <tls.h>
+#include "tlsdesc.h"
+
+ .text
+
+ /* Compute the thread pointer offset for symbols in the static
+ TLS block. The offset is the same for all threads.
+ Prototype:
+ _dl_tlsdesc_return (tlsdesc *); */
+ .hidden _dl_tlsdesc_return
+ .global _dl_tlsdesc_return
+ .type _dl_tlsdesc_return,%function
+ cfi_startproc
+ .align 2
+_dl_tlsdesc_return:
+ REG_L a0, a0, 8
+ RET
+ cfi_endproc
+ .size _dl_tlsdesc_return, .-_dl_tlsdesc_return
+
+ /* Handler for undefined weak TLS symbols.
+ Prototype:
+ _dl_tlsdesc_undefweak (tlsdesc *);
+
+ The second word of the descriptor contains the addend.
+ Return the addend minus the thread pointer. This ensures
+ that when the caller adds on the thread pointer it gets back
+ the addend. */
+ .hidden _dl_tlsdesc_undefweak
+ .global _dl_tlsdesc_undefweak
+ .type _dl_tlsdesc_undefweak,%function
+ cfi_startproc
+ .align 2
+_dl_tlsdesc_undefweak:
+ REG_L a0, a0, 8
+ sub.d a0, a0, tp
+ RET
+ cfi_endproc
+ .size _dl_tlsdesc_undefweak, .-_dl_tlsdesc_undefweak
+
+
+#ifdef SHARED
+
+#define FRAME_SIZE (-((-14 * SZREG) & ALMASK))
+#define FRAME_SIZE_LSX (-((-32 * SZVREG) & ALMASK))
+#define FRAME_SIZE_LASX (-((-32 * SZXREG) & ALMASK))
+#define FRAME_SIZE_FLOAT (-((-24 * SZFREG) & ALMASK))
+
+ /* Handler for dynamic TLS symbols.
+ Prototype:
+ _dl_tlsdesc_dynamic (tlsdesc *) ;
+
+ The second word of the descriptor points to a
+ tlsdesc_dynamic_arg structure.
+
+ Returns the offset between the thread pointer and the
+ object referenced by the argument.
+
+ ptrdiff_t
+ _dl_tlsdesc_dynamic (struct tlsdesc *tdp)
+ {
+ struct tlsdesc_dynamic_arg *td = tdp->arg;
+ dtv_t *dtv = *(dtv_t **)((char *)__thread_pointer - TCBHEAD_DTV);
+ if (__glibc_likely (td->gen_count <= dtv[0].counter
+ && (dtv[td->tlsinfo.ti_module].pointer.val
+ != TLS_DTV_UNALLOCATED),
+ 1))
+ return dtv[td->tlsinfo.ti_module].pointer.val
+ + td->tlsinfo.ti_offset
+ - __thread_pointer;
+
+ return ___tls_get_addr (&td->tlsinfo) - __thread_pointer;
+ } */
+ .hidden _dl_tlsdesc_dynamic
+ .global _dl_tlsdesc_dynamic
+ .type _dl_tlsdesc_dynamic,%function
+ cfi_startproc
+ .align 2
+_dl_tlsdesc_dynamic:
+ /* Save just enough registers to support fast path, if we fall
+ into slow path we will save additional registers. */
+ ADDI sp, sp, -24
+ REG_S t0, sp, 0
+ REG_S t1, sp, 8
+ REG_S t2, sp, 16
+
+/* Runtime Storage Layout of Thread-Local Storage
+ TP point to the start of TLS block.
+
+ dtv
+Low address TCB ----------------> dtv0(counter)
+ TP --> static_block0 <----- dtv1
+ static_block1 <----- dtv2
+ static_block2 <----- dtv3
+ dynamic_block0 <----- dtv4
+Hign address dynamic_block1 <----- dtv5 */
+
+ REG_L t0, tp, -SIZE_OF_TCB /* t0 = dtv */
+ REG_L a0, a0, TLSDESC_ARG /* a0(td) = tdp->arg */
+ REG_L t1, a0, TLSDESC_GEN_COUNT /* t1 = td->gen_count */
+ REG_L t2, t0, DTV_COUNTER /* t2 = dtv[0].counter */
+ /* If dtv[0].counter < td->gen_count, goto slow path. */
+ bltu t2, t1, .Lslow
+
+ REG_L t1, a0, TLSDESC_MODID /* t1 = td->tlsinfo.ti_module */
+ /* t1 = t1 * sizeof(dtv_t) = t1 * (2 * sizeof(void*)) */
+ slli.d t1, t1, 4
+ add.d t1, t1, t0 /* t1 = dtv[td->tlsinfo.ti_module] */
+ REG_L t1, t1, 0 /* t1 = dtv[td->tlsinfo.ti_module].pointer.val */
+ li.d t2, TLS_DTV_UNALLOCATED
+ /* If dtv[td->tlsinfo.ti_module].pointer.val is TLS_DTV_UNALLOCATED,
+ goto slow path. */
+ beq t1, t2, .Lslow
+
+ REG_L t2, a0, TLSDESC_MODOFF /* t2 = td->tlsinfo.ti_offset */
+ /* dtv[td->tlsinfo.ti_module].pointer.val + td->tlsinfo.ti_offset */
+ add.d a0, t1, t2
+.Lret:
+ sub.d a0, a0, tp
+ REG_L t0, sp, 0
+ REG_L t1, sp, 8
+ REG_L t2, sp, 16
+ ADDI sp, sp, 24
+ RET
+
+.Lslow:
+ /* This is the slow path. We need to call __tls_get_addr() which
+ means we need to save and restore all the register that the
+ callee will trash. */
+
+ /* Save the remaining registers that we must treat as caller save. */
+ ADDI sp, sp, -FRAME_SIZE
+ REG_S ra, sp, 0 * SZREG
+ REG_S a1, sp, 1 * SZREG
+ REG_S a2, sp, 2 * SZREG
+ REG_S a3, sp, 3 * SZREG
+ REG_S a4, sp, 4 * SZREG
+ REG_S a5, sp, 5 * SZREG
+ REG_S a6, sp, 6 * SZREG
+ REG_S a7, sp, 7 * SZREG
+ REG_S t3, sp, 8 * SZREG
+ REG_S t4, sp, 9 * SZREG
+ REG_S t5, sp, 10 * SZREG
+ REG_S t6, sp, 11 * SZREG
+ REG_S t7, sp, 12 * SZREG
+ REG_S t8, sp, 13 * SZREG
+
+#ifndef __loongarch_soft_float
+
+ /* Save fcsr0 register.
+ Only one physical fcsr0 register, fcsr1-fcsr3 are aliases
+ of some fields in fcsr0. */
+ ADDI sp, sp, -SZFCSREG
+ movfcsr2gr t0, fcsr0
+ st.w t0, sp, 0
+
+ /* Whether support LASX. */
+ la.global t0, _rtld_global_ro
+ REG_L t0, t0, GLRO_DL_HWCAP_OFFSET
+ andi t0, t0, HWCAP_LOONGARCH_LASX
+ beqz t0, .Llsx
+
+ /* Save 256-bit vector registers.
+ FIXME: Without vector ABI, save all vector registers. */
+ ADDI sp, sp, -FRAME_SIZE_LASX
+ xvst xr0, sp, 0*SZXREG
+ xvst xr1, sp, 1*SZXREG
+ xvst xr2, sp, 2*SZXREG
+ xvst xr3, sp, 3*SZXREG
+ xvst xr4, sp, 4*SZXREG
+ xvst xr5, sp, 5*SZXREG
+ xvst xr6, sp, 6*SZXREG
+ xvst xr7, sp, 7*SZXREG
+ xvst xr8, sp, 8*SZXREG
+ xvst xr9, sp, 9*SZXREG
+ xvst xr10, sp, 10*SZXREG
+ xvst xr11, sp, 11*SZXREG
+ xvst xr12, sp, 12*SZXREG
+ xvst xr13, sp, 13*SZXREG
+ xvst xr14, sp, 14*SZXREG
+ xvst xr15, sp, 15*SZXREG
+ xvst xr16, sp, 16*SZXREG
+ xvst xr17, sp, 17*SZXREG
+ xvst xr18, sp, 18*SZXREG
+ xvst xr19, sp, 19*SZXREG
+ xvst xr20, sp, 20*SZXREG
+ xvst xr21, sp, 21*SZXREG
+ xvst xr22, sp, 22*SZXREG
+ xvst xr23, sp, 23*SZXREG
+ xvst xr24, sp, 24*SZXREG
+ xvst xr25, sp, 25*SZXREG
+ xvst xr26, sp, 26*SZXREG
+ xvst xr27, sp, 27*SZXREG
+ xvst xr28, sp, 28*SZXREG
+ xvst xr29, sp, 29*SZXREG
+ xvst xr30, sp, 30*SZXREG
+ xvst xr31, sp, 31*SZXREG
+ b .Ltga
+
+.Llsx:
+ /* Whether support LSX. */
+ andi t0, t0, HWCAP_LOONGARCH_LSX
+ beqz t0, .Lfloat
+
+ /* Save 128-bit vector registers. */
+ ADDI sp, sp, -FRAME_SIZE_LSX
+ vst vr0, sp, 0*SZVREG
+ vst vr1, sp, 1*SZVREG
+ vst vr2, sp, 2*SZVREG
+ vst vr3, sp, 3*SZVREG
+ vst vr4, sp, 4*SZVREG
+ vst vr5, sp, 5*SZVREG
+ vst vr6, sp, 6*SZVREG
+ vst vr7, sp, 7*SZVREG
+ vst vr8, sp, 8*SZVREG
+ vst vr9, sp, 9*SZVREG
+ vst vr10, sp, 10*SZVREG
+ vst vr11, sp, 11*SZVREG
+ vst vr12, sp, 12*SZVREG
+ vst vr13, sp, 13*SZVREG
+ vst vr14, sp, 14*SZVREG
+ vst vr15, sp, 15*SZVREG
+ vst vr16, sp, 16*SZVREG
+ vst vr17, sp, 17*SZVREG
+ vst vr18, sp, 18*SZVREG
+ vst vr19, sp, 19*SZVREG
+ vst vr20, sp, 20*SZVREG
+ vst vr21, sp, 21*SZVREG
+ vst vr22, sp, 22*SZVREG
+ vst vr23, sp, 23*SZVREG
+ vst vr24, sp, 24*SZVREG
+ vst vr25, sp, 25*SZVREG
+ vst vr26, sp, 26*SZVREG
+ vst vr27, sp, 27*SZVREG
+ vst vr28, sp, 28*SZVREG
+ vst vr29, sp, 29*SZVREG
+ vst vr30, sp, 30*SZVREG
+ vst vr31, sp, 31*SZVREG
+ b .Ltga
+
+.Lfloat:
+ /* Save float registers. */
+ ADDI sp, sp, -FRAME_SIZE_FLOAT
+ FREG_S fa0, sp, 0*SZFREG
+ FREG_S fa1, sp, 1*SZFREG
+ FREG_S fa2, sp, 2*SZFREG
+ FREG_S fa3, sp, 3*SZFREG
+ FREG_S fa4, sp, 4*SZFREG
+ FREG_S fa5, sp, 5*SZFREG
+ FREG_S fa6, sp, 6*SZFREG
+ FREG_S fa7, sp, 7*SZFREG
+ FREG_S ft0, sp, 8*SZFREG
+ FREG_S ft1, sp, 9*SZFREG
+ FREG_S ft2, sp, 10*SZFREG
+ FREG_S ft3, sp, 11*SZFREG
+ FREG_S ft4, sp, 12*SZFREG
+ FREG_S ft5, sp, 13*SZFREG
+ FREG_S ft6, sp, 14*SZFREG
+ FREG_S ft7, sp, 15*SZFREG
+ FREG_S ft8, sp, 16*SZFREG
+ FREG_S ft9, sp, 17*SZFREG
+ FREG_S ft10, sp, 18*SZFREG
+ FREG_S ft11, sp, 19*SZFREG
+ FREG_S ft12, sp, 20*SZFREG
+ FREG_S ft13, sp, 21*SZFREG
+ FREG_S ft14, sp, 22*SZFREG
+ FREG_S ft15, sp, 23*SZFREG
+
+#endif /* #ifndef __loongarch_soft_float */
+
+.Ltga:
+ bl HIDDEN_JUMPTARGET(__tls_get_addr)
+ ADDI a0, a0, -TLS_DTV_OFFSET
+
+#ifndef __loongarch_soft_float
+
+ la.global t0, _rtld_global_ro
+ REG_L t0, t0, GLRO_DL_HWCAP_OFFSET
+ andi t0, t0, HWCAP_LOONGARCH_LASX
+ beqz t0, .Llsx1
+
+ /* Restore 256-bit vector registers. */
+ xvld xr0, sp, 0*SZXREG
+ xvld xr1, sp, 1*SZXREG
+ xvld xr2, sp, 2*SZXREG
+ xvld xr3, sp, 3*SZXREG
+ xvld xr4, sp, 4*SZXREG
+ xvld xr5, sp, 5*SZXREG
+ xvld xr6, sp, 6*SZXREG
+ xvld xr7, sp, 7*SZXREG
+ xvld xr8, sp, 8*SZXREG
+ xvld xr9, sp, 9*SZXREG
+ xvld xr10, sp, 10*SZXREG
+ xvld xr11, sp, 11*SZXREG
+ xvld xr12, sp, 12*SZXREG
+ xvld xr13, sp, 13*SZXREG
+ xvld xr14, sp, 14*SZXREG
+ xvld xr15, sp, 15*SZXREG
+ xvld xr16, sp, 16*SZXREG
+ xvld xr17, sp, 17*SZXREG
+ xvld xr18, sp, 18*SZXREG
+ xvld xr19, sp, 19*SZXREG
+ xvld xr20, sp, 20*SZXREG
+ xvld xr21, sp, 21*SZXREG
+ xvld xr22, sp, 22*SZXREG
+ xvld xr23, sp, 23*SZXREG
+ xvld xr24, sp, 24*SZXREG
+ xvld xr25, sp, 25*SZXREG
+ xvld xr26, sp, 26*SZXREG
+ xvld xr27, sp, 27*SZXREG
+ xvld xr28, sp, 28*SZXREG
+ xvld xr29, sp, 29*SZXREG
+ xvld xr30, sp, 30*SZXREG
+ xvld xr31, sp, 31*SZXREG
+ ADDI sp, sp, FRAME_SIZE_LASX
+ b .Lfcsr
+
+.Llsx1:
+ andi t0, s0, HWCAP_LOONGARCH_LSX
+ beqz t0, .Lfloat1
+
+ /* Restore 128-bit vector registers. */
+ vld vr0, sp, 0*SZVREG
+ vld vr1, sp, 1*SZVREG
+ vld vr2, sp, 2*SZVREG
+ vld vr3, sp, 3*SZVREG
+ vld vr4, sp, 4*SZVREG
+ vld vr5, sp, 5*SZVREG
+ vld vr6, sp, 6*SZVREG
+ vld vr7, sp, 7*SZVREG
+ vld vr8, sp, 8*SZVREG
+ vld vr9, sp, 9*SZVREG
+ vld vr10, sp, 10*SZVREG
+ vld vr11, sp, 11*SZVREG
+ vld vr12, sp, 12*SZVREG
+ vld vr13, sp, 13*SZVREG
+ vld vr14, sp, 14*SZVREG
+ vld vr15, sp, 15*SZVREG
+ vld vr16, sp, 16*SZVREG
+ vld vr17, sp, 17*SZVREG
+ vld vr18, sp, 18*SZVREG
+ vld vr19, sp, 19*SZVREG
+ vld vr20, sp, 20*SZVREG
+ vld vr21, sp, 21*SZVREG
+ vld vr22, sp, 22*SZVREG
+ vld vr23, sp, 23*SZVREG
+ vld vr24, sp, 24*SZVREG
+ vld vr25, sp, 25*SZVREG
+ vld vr26, sp, 26*SZVREG
+ vld vr27, sp, 27*SZVREG
+ vld vr28, sp, 28*SZVREG
+ vld vr29, sp, 29*SZVREG
+ vld vr30, sp, 30*SZVREG
+ vld vr31, sp, 31*SZVREG
+ ADDI sp, sp, FRAME_SIZE_LSX
+ b .Lfcsr
+
+.Lfloat1:
+ /* Restore float registers. */
+ FREG_L fa0, sp, 0*SZFREG
+ FREG_L fa1, sp, 1*SZFREG
+ FREG_L fa2, sp, 2*SZFREG
+ FREG_L fa3, sp, 3*SZFREG
+ FREG_L fa4, sp, 4*SZFREG
+ FREG_L fa5, sp, 5*SZFREG
+ FREG_L fa6, sp, 6*SZFREG
+ FREG_L fa7, sp, 7*SZFREG
+ FREG_L ft0, sp, 8*SZFREG
+ FREG_L ft1, sp, 9*SZFREG
+ FREG_L ft2, sp, 10*SZFREG
+ FREG_L ft3, sp, 11*SZFREG
+ FREG_L ft4, sp, 12*SZFREG
+ FREG_L ft5, sp, 13*SZFREG
+ FREG_L ft6, sp, 14*SZFREG
+ FREG_L ft7, sp, 15*SZFREG
+ FREG_L ft8, sp, 16*SZFREG
+ FREG_L ft9, sp, 17*SZFREG
+ FREG_L ft10, sp, 18*SZFREG
+ FREG_L ft11, sp, 19*SZFREG
+ FREG_L ft12, sp, 20*SZFREG
+ FREG_L ft13, sp, 21*SZFREG
+ FREG_L ft14, sp, 22*SZFREG
+ FREG_L ft15, sp, 23*SZFREG
+ ADDI sp, sp, FRAME_SIZE_FLOAT
+
+.Lfcsr:
+ /* Restore fcsr0 register. */
+ ld.w t0, sp, 0
+ movgr2fcsr fcsr0, t0
+ ADDI sp, sp, SZFCSREG
+
+#endif /* #ifndef __loongarch_soft_float */
+
+ REG_L ra, sp, 0 * SZREG
+ REG_L a1, sp, 1 * SZREG
+ REG_L a2, sp, 2 * SZREG
+ REG_L a3, sp, 3 * SZREG
+ REG_L a4, sp, 4 * SZREG
+ REG_L a5, sp, 5 * SZREG
+ REG_L a6, sp, 6 * SZREG
+ REG_L a7, sp, 7 * SZREG
+ REG_L t3, sp, 8 * SZREG
+ REG_L t4, sp, 9 * SZREG
+ REG_L t5, sp, 10 * SZREG
+ REG_L t6, sp, 11 * SZREG
+ REG_L t7, sp, 12 * SZREG
+ REG_L t8, sp, 13 * SZREG
+ ADDI sp, sp, FRAME_SIZE
+
+ b .Lret
+ cfi_endproc
+ .size _dl_tlsdesc_dynamic, .-_dl_tlsdesc_dynamic
+ .hidden HIDDEN_JUMPTARGET(__tls_get_addr)
+
+#endif /* #ifdef SHARED */
diff --git a/sysdeps/loongarch/dl-tlsdesc.h b/sysdeps/loongarch/dl-tlsdesc.h
new file mode 100644
index 00000000..ff8c69cb
--- /dev/null
+++ b/sysdeps/loongarch/dl-tlsdesc.h
@@ -0,0 +1,49 @@
+/* Thread-local storage descriptor handling in the ELF dynamic linker.
+ LoongArch version.
+ Copyright (C) 2024 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/>. */
+
+#ifndef _DL_TLSDESC_H
+#define _DL_TLSDESC_H
+
+#include <dl-tls.h>
+
+/* Type used to represent a TLS descriptor in the GOT. */
+struct tlsdesc
+{
+ ptrdiff_t (*entry) (struct tlsdesc *);
+ void *arg;
+};
+
+/* Type used as the argument in a TLS descriptor for a symbol that
+ needs dynamic TLS offsets. */
+struct tlsdesc_dynamic_arg
+{
+ tls_index tlsinfo;
+ size_t gen_count;
+};
+
+extern ptrdiff_t attribute_hidden _dl_tlsdesc_return (struct tlsdesc *);
+extern ptrdiff_t attribute_hidden _dl_tlsdesc_undefweak (struct tlsdesc *);
+
+#ifdef SHARED
+extern void *_dl_make_tlsdesc_dynamic (struct link_map *, size_t);
+extern ptrdiff_t attribute_hidden _dl_tlsdesc_dynamic (struct tlsdesc *);
+#endif
+
+#endif
diff --git a/sysdeps/loongarch/linkmap.h b/sysdeps/loongarch/linkmap.h
index 2f5bf534..4e637d49 100644
--- a/sysdeps/loongarch/linkmap.h
+++ b/sysdeps/loongarch/linkmap.h
@@ -18,5 +18,6 @@
struct link_map_machine
{
- ElfW (Addr) plt; /* Address of .plt. */
+ ElfW (Addr) plt; /* Address of .plt. */
+ void *tlsdesc_table; /* Address of TLS descriptor hash table. */
};
diff --git a/sysdeps/loongarch/preconfigure b/sysdeps/loongarch/preconfigure
index dfc7ecfd..0d1e9ed8 100644
--- a/sysdeps/loongarch/preconfigure
+++ b/sysdeps/loongarch/preconfigure
@@ -43,6 +43,7 @@ loongarch*)
base_machine=loongarch
+ mtls_descriptor=desc
;;
esac
diff --git a/sysdeps/loongarch/sys/asm.h b/sysdeps/loongarch/sys/asm.h
index c5eb8afa..dbee93ee 100644
--- a/sysdeps/loongarch/sys/asm.h
+++ b/sysdeps/loongarch/sys/asm.h
@@ -25,6 +25,7 @@
/* Macros to handle different pointer/register sizes for 32/64-bit code. */
#define SZREG 8
#define SZFREG 8
+#define SZFCSREG 4
#define SZVREG 16
#define SZXREG 32
#define REG_L ld.d
diff --git a/sysdeps/loongarch/sys/regdef.h b/sysdeps/loongarch/sys/regdef.h
index 524d2e32..c26b729e 100644
--- a/sysdeps/loongarch/sys/regdef.h
+++ b/sysdeps/loongarch/sys/regdef.h
@@ -97,6 +97,7 @@
#define fcc5 $fcc5
#define fcc6 $fcc6
#define fcc7 $fcc7
+#define fcsr0 $fcsr0
#define vr0 $vr0
#define vr1 $vr1
diff --git a/sysdeps/loongarch/tlsdesc.c b/sysdeps/loongarch/tlsdesc.c
new file mode 100644
index 00000000..76708f7e
--- /dev/null
+++ b/sysdeps/loongarch/tlsdesc.c
@@ -0,0 +1,39 @@
+/* Manage TLS descriptors. LoongArch64 version.
+
+ Copyright (C) 2024 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 <ldsodefs.h>
+#include <tls.h>
+#include <dl-tlsdesc.h>
+#include <dl-unmap-segments.h>
+#include <tlsdeschtab.h>
+
+/* Unmap the dynamic object, but also release its TLS descriptor table
+ if there is one. */
+
+void
+_dl_unmap (struct link_map *map)
+{
+ _dl_unmap_segments (map);
+
+#ifdef SHARED
+ if (map->l_mach.tlsdesc_table)
+ htab_delete (map->l_mach.tlsdesc_table);
+#endif
+}
diff --git a/sysdeps/loongarch/tlsdesc.sym b/sysdeps/loongarch/tlsdesc.sym
new file mode 100644
index 00000000..213d0b30
--- /dev/null
+++ b/sysdeps/loongarch/tlsdesc.sym
@@ -0,0 +1,28 @@
+#include <stddef.h>
+#include <sysdep.h>
+#include <tls.h>
+#include <link.h>
+#include <dl-tlsdesc.h>
+
+#define SHARED 1
+
+#include <ldsodefs.h>
+
+#define GLRO_offsetof(name) offsetof (struct rtld_global_ro, _##name)
+
+--
+
+-- Abuse tls.h macros to derive offsets relative to the thread register.
+
+TLSDESC_ARG offsetof(struct tlsdesc, arg)
+TLSDESC_GEN_COUNT offsetof(struct tlsdesc_dynamic_arg, gen_count)
+TLSDESC_MODID offsetof(struct tlsdesc_dynamic_arg, tlsinfo.ti_module)
+TLSDESC_MODOFF offsetof(struct tlsdesc_dynamic_arg, tlsinfo.ti_offset)
+TCBHEAD_DTV offsetof(tcbhead_t, dtv)
+DTV_COUNTER offsetof(dtv_t, counter)
+TLS_DTV_UNALLOCATED TLS_DTV_UNALLOCATED
+TLS_DTV_OFFSET TLS_DTV_OFFSET
+SIZE_OF_TCB sizeof(tcbhead_t)
+GLRO_DL_HWCAP_OFFSET GLRO_offsetof (dl_hwcap)
+HWCAP_LOONGARCH_LSX HWCAP_LOONGARCH_LSX
+HWCAP_LOONGARCH_LASX HWCAP_LOONGARCH_LASX
diff --git a/sysdeps/loongarch/tst-gnu2-tls2.h b/sysdeps/loongarch/tst-gnu2-tls2.h
new file mode 100644
index 00000000..8e421678
--- /dev/null
+++ b/sysdeps/loongarch/tst-gnu2-tls2.h
@@ -0,0 +1,377 @@
+/* Test TLSDESC relocation. LoongArch64 version.
+ Copyright (C) 2024 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 <config.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/auxv.h>
+
+/* The instruction between BEFORE_TLSDESC_CALL and _dl_tlsdesc_dynamic,
+ and the instruction between _dl_tlsdesc_dynamic and AFTER_TLSDESC_CALL,
+ may modified most of the general-purpose register. */
+#define SAVE_REGISTER(src) \
+ asm volatile ("st.d $r3, %0" :"=m"(src) :);
+
+#ifdef __loongarch_soft_float
+
+#define BEFORE_TLSDESC_CALL() \
+ uint64_t src; \
+ SAVE_REGISTER (src);
+
+#define AFTER_TLSDESC_CALL() \
+ uint64_t restore; \
+ SAVE_REGISTER (restore); \
+ if (src != restore) \
+ abort ();
+
+#else /* hard float */
+
+#define SAVE_REGISTER_FCC(src) \
+ asm volatile ("movcf2gr $t0, $fcc0" ::: "$t0"); \
+ asm volatile ("st.d $t0, %0" :"=m"(src[0]) :); \
+ asm volatile ("movcf2gr $t0, $fcc1" ::: "$t0"); \
+ asm volatile ("st.d $t0, %0" :"=m"(src[1]) :); \
+ asm volatile ("movcf2gr $t0, $fcc2" ::: "$t0"); \
+ asm volatile ("st.d $t0, %0" :"=m"(src[2]) :); \
+ asm volatile ("movcf2gr $t0, $fcc3" ::: "$t0"); \
+ asm volatile ("st.d $t0, %0" :"=m"(src[3]) :); \
+ asm volatile ("movcf2gr $t0, $fcc4" ::: "$t0"); \
+ asm volatile ("st.d $t0, %0" :"=m"(src[4]) :); \
+ asm volatile ("movcf2gr $t0, $fcc5" ::: "$t0"); \
+ asm volatile ("st.d $t0, %0" :"=m"(src[5]) :); \
+ asm volatile ("movcf2gr $t0, $fcc6" ::: "$t0"); \
+ asm volatile ("st.d $t0, %0" :"=m"(src[6]) :); \
+ asm volatile ("movcf2gr $t0, $fcc7" ::: "$t0"); \
+ asm volatile ("st.d $t0, %0" :"=m"(src[7]) :);
+
+#define LOAD_REGISTER_FCSR() \
+ asm volatile ("li.d $t0, 0x01010101" ::: "$t0"); \
+ asm volatile ("movgr2fcsr $fcsr0, $t0" :::);
+
+#define SAVE_REGISTER_FCSR() \
+ asm volatile ("movfcsr2gr $t0, $fcsr0" ::: "$t0"); \
+ asm volatile ("st.d $t0, %0" :"=m"(restore_fcsr) :);
+
+# define INIT_TLSDESC_CALL() \
+ unsigned long hwcap = getauxval (AT_HWCAP);
+
+#define LOAD_REGISTER_FLOAT() \
+ asm volatile ("fld.d $f0, %0" ::"m"(src_float[0]) :"$f0"); \
+ asm volatile ("fld.d $f1, %0" ::"m"(src_float[1]) :"$f1"); \
+ asm volatile ("fld.d $f2, %0" ::"m"(src_float[2]) :"$f2"); \
+ asm volatile ("fld.d $f3, %0" ::"m"(src_float[3]) :"$f3"); \
+ asm volatile ("fld.d $f4, %0" ::"m"(src_float[4]) :"$f4"); \
+ asm volatile ("fld.d $f5, %0" ::"m"(src_float[5]) :"$f5"); \
+ asm volatile ("fld.d $f6, %0" ::"m"(src_float[6]) :"$f6"); \
+ asm volatile ("fld.d $f7, %0" ::"m"(src_float[7]) :"$f7"); \
+ asm volatile ("fld.d $f8, %0" ::"m"(src_float[8]) :"$f8"); \
+ asm volatile ("fld.d $f9, %0" ::"m"(src_float[9]) :"$f9"); \
+ asm volatile ("fld.d $f10, %0" ::"m"(src_float[10]) :"$f10"); \
+ asm volatile ("fld.d $f11, %0" ::"m"(src_float[11]) :"$f11"); \
+ asm volatile ("fld.d $f12, %0" ::"m"(src_float[12]) :"$f12"); \
+ asm volatile ("fld.d $f13, %0" ::"m"(src_float[13]) :"$f13"); \
+ asm volatile ("fld.d $f14, %0" ::"m"(src_float[14]) :"$f14"); \
+ asm volatile ("fld.d $f15, %0" ::"m"(src_float[15]) :"$f15"); \
+ asm volatile ("fld.d $f16, %0" ::"m"(src_float[16]) :"$f16"); \
+ asm volatile ("fld.d $f17, %0" ::"m"(src_float[17]) :"$f17"); \
+ asm volatile ("fld.d $f18, %0" ::"m"(src_float[18]) :"$f18"); \
+ asm volatile ("fld.d $f19, %0" ::"m"(src_float[19]) :"$f19"); \
+ asm volatile ("fld.d $f20, %0" ::"m"(src_float[20]) :"$f20"); \
+ asm volatile ("fld.d $f21, %0" ::"m"(src_float[21]) :"$f21"); \
+ asm volatile ("fld.d $f22, %0" ::"m"(src_float[22]) :"$f22"); \
+ asm volatile ("fld.d $f23, %0" ::"m"(src_float[23]) :"$f23"); \
+ asm volatile ("fld.d $f24, %0" ::"m"(src_float[24]) :"$f24"); \
+ asm volatile ("fld.d $f25, %0" ::"m"(src_float[25]) :"$f25"); \
+ asm volatile ("fld.d $f26, %0" ::"m"(src_float[26]) :"$f26"); \
+ asm volatile ("fld.d $f27, %0" ::"m"(src_float[27]) :"$f27"); \
+ asm volatile ("fld.d $f28, %0" ::"m"(src_float[28]) :"$f28"); \
+ asm volatile ("fld.d $f29, %0" ::"m"(src_float[29]) :"$f29"); \
+ asm volatile ("fld.d $f30, %0" ::"m"(src_float[30]) :"$f30"); \
+ asm volatile ("fld.d $f31, %0" ::"m"(src_float[31]) :"$f31");
+
+#define SAVE_REGISTER_FLOAT() \
+ asm volatile ("fst.d $f0, %0" :"=m"(restore_float[0]) :); \
+ asm volatile ("fst.d $f1, %0" :"=m"(restore_float[1]) :); \
+ asm volatile ("fst.d $f2, %0" :"=m"(restore_float[2]) :); \
+ asm volatile ("fst.d $f3, %0" :"=m"(restore_float[3]) :); \
+ asm volatile ("fst.d $f4, %0" :"=m"(restore_float[4]) :); \
+ asm volatile ("fst.d $f5, %0" :"=m"(restore_float[5]) :); \
+ asm volatile ("fst.d $f6, %0" :"=m"(restore_float[6]) :); \
+ asm volatile ("fst.d $f7, %0" :"=m"(restore_float[7]) :); \
+ asm volatile ("fst.d $f8, %0" :"=m"(restore_float[8]) :); \
+ asm volatile ("fst.d $f9, %0" :"=m"(restore_float[9]) :); \
+ asm volatile ("fst.d $f10, %0" :"=m"(restore_float[10]) :); \
+ asm volatile ("fst.d $f11, %0" :"=m"(restore_float[11]) :); \
+ asm volatile ("fst.d $f12, %0" :"=m"(restore_float[12]) :); \
+ asm volatile ("fst.d $f13, %0" :"=m"(restore_float[13]) :); \
+ asm volatile ("fst.d $f14, %0" :"=m"(restore_float[14]) :); \
+ asm volatile ("fst.d $f15, %0" :"=m"(restore_float[15]) :); \
+ asm volatile ("fst.d $f16, %0" :"=m"(restore_float[16]) :); \
+ asm volatile ("fst.d $f17, %0" :"=m"(restore_float[17]) :); \
+ asm volatile ("fst.d $f18, %0" :"=m"(restore_float[18]) :); \
+ asm volatile ("fst.d $f19, %0" :"=m"(restore_float[19]) :); \
+ asm volatile ("fst.d $f20, %0" :"=m"(restore_float[20]) :); \
+ asm volatile ("fst.d $f21, %0" :"=m"(restore_float[21]) :); \
+ asm volatile ("fst.d $f22, %0" :"=m"(restore_float[22]) :); \
+ asm volatile ("fst.d $f23, %0" :"=m"(restore_float[23]) :); \
+ asm volatile ("fst.d $f24, %0" :"=m"(restore_float[24]) :); \
+ asm volatile ("fst.d $f25, %0" :"=m"(restore_float[25]) :); \
+ asm volatile ("fst.d $f26, %0" :"=m"(restore_float[26]) :); \
+ asm volatile ("fst.d $f27, %0" :"=m"(restore_float[27]) :); \
+ asm volatile ("fst.d $f28, %0" :"=m"(restore_float[28]) :); \
+ asm volatile ("fst.d $f29, %0" :"=m"(restore_float[29]) :); \
+ asm volatile ("fst.d $f30, %0" :"=m"(restore_float[30]) :); \
+ asm volatile ("fst.d $f31, %0" :"=m"(restore_float[31]) :);
+
+#ifdef HAVE_LOONGARCH_VEC_COM
+ #define LOAD_REGISTER_LSX() \
+ /* Every byte in $vr0 is 1. */ \
+ asm volatile ("vldi $vr0, 1" ::: "$vr0"); \
+ asm volatile ("vldi $vr1, 2" ::: "$vr1"); \
+ asm volatile ("vldi $vr2, 3" ::: "$vr2"); \
+ asm volatile ("vldi $vr3, 4" ::: "$vr3"); \
+ asm volatile ("vldi $vr4, 5" ::: "$vr4"); \
+ asm volatile ("vldi $vr5, 6" ::: "$vr5"); \
+ asm volatile ("vldi $vr6, 7" ::: "$vr6"); \
+ asm volatile ("vldi $vr7, 8" ::: "$vr7"); \
+ asm volatile ("vldi $vr8, 9" ::: "$vr8"); \
+ asm volatile ("vldi $vr9, 10" ::: "$vr9"); \
+ asm volatile ("vldi $vr10, 11" ::: "$vr10"); \
+ asm volatile ("vldi $vr11, 12" ::: "$vr11"); \
+ asm volatile ("vldi $vr12, 13" ::: "$vr12"); \
+ asm volatile ("vldi $vr13, 14" ::: "$vr13"); \
+ asm volatile ("vldi $vr14, 15" ::: "$vr14"); \
+ asm volatile ("vldi $vr15, 16" ::: "$vr15"); \
+ asm volatile ("vldi $vr16, 17" ::: "$vr16"); \
+ asm volatile ("vldi $vr17, 18" ::: "$vr17"); \
+ asm volatile ("vldi $vr18, 19" ::: "$vr18"); \
+ asm volatile ("vldi $vr19, 20" ::: "$vr19"); \
+ asm volatile ("vldi $vr20, 21" ::: "$vr20"); \
+ asm volatile ("vldi $vr21, 22" ::: "$vr21"); \
+ asm volatile ("vldi $vr22, 23" ::: "$vr22"); \
+ asm volatile ("vldi $vr23, 24" ::: "$vr23"); \
+ asm volatile ("vldi $vr24, 25" ::: "$vr24"); \
+ asm volatile ("vldi $vr25, 26" ::: "$vr25"); \
+ asm volatile ("vldi $vr26, 27" ::: "$vr26"); \
+ asm volatile ("vldi $vr27, 28" ::: "$vr27"); \
+ asm volatile ("vldi $vr28, 29" ::: "$vr28"); \
+ asm volatile ("vldi $vr29, 30" ::: "$vr29"); \
+ asm volatile ("vldi $vr30, 31" ::: "$vr30"); \
+ asm volatile ("vldi $vr31, 32" ::: "$vr31");
+#else
+ #define LOAD_REGISTER_LSX()
+#endif
+
+#ifdef HAVE_LOONGARCH_VEC_COM
+ #define SAVE_REGISTER_LSX() \
+ int src_lsx[32][4]; \
+ int restore_lsx[32][4]; \
+ asm volatile ("vst $vr0, %0" :"=m"(restore_lsx[0]) :); \
+ asm volatile ("vst $vr1, %0" :"=m"(restore_lsx[1]) :); \
+ asm volatile ("vst $vr2, %0" :"=m"(restore_lsx[2]) :); \
+ asm volatile ("vst $vr3, %0" :"=m"(restore_lsx[3]) :); \
+ asm volatile ("vst $vr4, %0" :"=m"(restore_lsx[4]) :); \
+ asm volatile ("vst $vr5, %0" :"=m"(restore_lsx[5]) :); \
+ asm volatile ("vst $vr6, %0" :"=m"(restore_lsx[6]) :); \
+ asm volatile ("vst $vr7, %0" :"=m"(restore_lsx[7]) :); \
+ asm volatile ("vst $vr8, %0" :"=m"(restore_lsx[8]) :); \
+ asm volatile ("vst $vr9, %0" :"=m"(restore_lsx[9]) :); \
+ asm volatile ("vst $vr10, %0" :"=m"(restore_lsx[10]) :); \
+ asm volatile ("vst $vr11, %0" :"=m"(restore_lsx[11]) :); \
+ asm volatile ("vst $vr12, %0" :"=m"(restore_lsx[12]) :); \
+ asm volatile ("vst $vr13, %0" :"=m"(restore_lsx[13]) :); \
+ asm volatile ("vst $vr14, %0" :"=m"(restore_lsx[14]) :); \
+ asm volatile ("vst $vr15, %0" :"=m"(restore_lsx[15]) :); \
+ asm volatile ("vst $vr16, %0" :"=m"(restore_lsx[16]) :); \
+ asm volatile ("vst $vr17, %0" :"=m"(restore_lsx[17]) :); \
+ asm volatile ("vst $vr18, %0" :"=m"(restore_lsx[18]) :); \
+ asm volatile ("vst $vr19, %0" :"=m"(restore_lsx[19]) :); \
+ asm volatile ("vst $vr20, %0" :"=m"(restore_lsx[20]) :); \
+ asm volatile ("vst $vr21, %0" :"=m"(restore_lsx[21]) :); \
+ asm volatile ("vst $vr22, %0" :"=m"(restore_lsx[22]) :); \
+ asm volatile ("vst $vr23, %0" :"=m"(restore_lsx[23]) :); \
+ asm volatile ("vst $vr24, %0" :"=m"(restore_lsx[24]) :); \
+ asm volatile ("vst $vr25, %0" :"=m"(restore_lsx[25]) :); \
+ asm volatile ("vst $vr26, %0" :"=m"(restore_lsx[26]) :); \
+ asm volatile ("vst $vr27, %0" :"=m"(restore_lsx[27]) :); \
+ asm volatile ("vst $vr28, %0" :"=m"(restore_lsx[28]) :); \
+ asm volatile ("vst $vr29, %0" :"=m"(restore_lsx[29]) :); \
+ asm volatile ("vst $vr30, %0" :"=m"(restore_lsx[30]) :); \
+ asm volatile ("vst $vr31, %0" :"=m"(restore_lsx[31]) :); \
+ for (int i = 0; i < 32; i++) \
+ for (int j = 0; j < 4; j++) \
+ { \
+ src_lsx[i][j] = 0x01010101 * (i + 1); \
+ if (src_lsx[i][j] != restore_lsx[i][j]) \
+ abort (); \
+ }
+#else
+ #define SAVE_REGISTER_LSX()
+#endif
+
+#ifdef HAVE_LOONGARCH_VEC_COM
+ #define LOAD_REGISTER_LASX() \
+ /* Every byte in $xr0 is 1. */ \
+ asm volatile ("xvldi $xr0, 1" ::: "$xr0"); \
+ asm volatile ("xvldi $xr1, 2" ::: "$xr1"); \
+ asm volatile ("xvldi $xr2, 3" ::: "$xr2"); \
+ asm volatile ("xvldi $xr3, 4" ::: "$xr3"); \
+ asm volatile ("xvldi $xr4, 5" ::: "$xr4"); \
+ asm volatile ("xvldi $xr5, 6" ::: "$xr5"); \
+ asm volatile ("xvldi $xr6, 7" ::: "$xr6"); \
+ asm volatile ("xvldi $xr7, 8" ::: "$xr7"); \
+ asm volatile ("xvldi $xr8, 9" ::: "$xr8"); \
+ asm volatile ("xvldi $xr9, 10" ::: "$xr9"); \
+ asm volatile ("xvldi $xr10, 11" ::: "$xr10"); \
+ asm volatile ("xvldi $xr11, 12" ::: "$xr11"); \
+ asm volatile ("xvldi $xr12, 13" ::: "$xr12"); \
+ asm volatile ("xvldi $xr13, 14" ::: "$xr13"); \
+ asm volatile ("xvldi $xr14, 15" ::: "$xr14"); \
+ asm volatile ("xvldi $xr15, 16" ::: "$xr15"); \
+ asm volatile ("xvldi $xr16, 17" ::: "$xr16"); \
+ asm volatile ("xvldi $xr17, 18" ::: "$xr17"); \
+ asm volatile ("xvldi $xr18, 19" ::: "$xr18"); \
+ asm volatile ("xvldi $xr19, 20" ::: "$xr19"); \
+ asm volatile ("xvldi $xr20, 21" ::: "$xr20"); \
+ asm volatile ("xvldi $xr21, 22" ::: "$xr21"); \
+ asm volatile ("xvldi $xr22, 23" ::: "$xr22"); \
+ asm volatile ("xvldi $xr23, 24" ::: "$xr23"); \
+ asm volatile ("xvldi $xr24, 25" ::: "$xr24"); \
+ asm volatile ("xvldi $xr25, 26" ::: "$xr25"); \
+ asm volatile ("xvldi $xr26, 27" ::: "$xr26"); \
+ asm volatile ("xvldi $xr27, 28" ::: "$xr27"); \
+ asm volatile ("xvldi $xr28, 29" ::: "$xr28"); \
+ asm volatile ("xvldi $xr29, 30" ::: "$xr29"); \
+ asm volatile ("xvldi $xr30, 31" ::: "$xr30"); \
+ asm volatile ("xvldi $xr31, 32" ::: "$xr31");
+#else
+ #define LOAD_REGISTER_LASX()
+#endif
+
+#ifdef HAVE_LOONGARCH_VEC_COM
+ #define SAVE_REGISTER_LASX() \
+ int src_lasx[32][8]; \
+ int restore_lasx[32][8]; \
+ asm volatile ("xvst $xr0, %0" :"=m"(restore_lasx[0]) :); \
+ asm volatile ("xvst $xr1, %0" :"=m"(restore_lasx[1]) :); \
+ asm volatile ("xvst $xr2, %0" :"=m"(restore_lasx[2]) :); \
+ asm volatile ("xvst $xr3, %0" :"=m"(restore_lasx[3]) :); \
+ asm volatile ("xvst $xr4, %0" :"=m"(restore_lasx[4]) :); \
+ asm volatile ("xvst $xr5, %0" :"=m"(restore_lasx[5]) :); \
+ asm volatile ("xvst $xr6, %0" :"=m"(restore_lasx[6]) :); \
+ asm volatile ("xvst $xr7, %0" :"=m"(restore_lasx[7]) :); \
+ asm volatile ("xvst $xr8, %0" :"=m"(restore_lasx[8]) :); \
+ asm volatile ("xvst $xr9, %0" :"=m"(restore_lasx[9]) :); \
+ asm volatile ("xvst $xr10, %0" :"=m"(restore_lasx[10]) :); \
+ asm volatile ("xvst $xr11, %0" :"=m"(restore_lasx[11]) :); \
+ asm volatile ("xvst $xr12, %0" :"=m"(restore_lasx[12]) :); \
+ asm volatile ("xvst $xr13, %0" :"=m"(restore_lasx[13]) :); \
+ asm volatile ("xvst $xr14, %0" :"=m"(restore_lasx[14]) :); \
+ asm volatile ("xvst $xr15, %0" :"=m"(restore_lasx[15]) :); \
+ asm volatile ("xvst $xr16, %0" :"=m"(restore_lasx[16]) :); \
+ asm volatile ("xvst $xr17, %0" :"=m"(restore_lasx[17]) :); \
+ asm volatile ("xvst $xr18, %0" :"=m"(restore_lasx[18]) :); \
+ asm volatile ("xvst $xr19, %0" :"=m"(restore_lasx[19]) :); \
+ asm volatile ("xvst $xr20, %0" :"=m"(restore_lasx[20]) :); \
+ asm volatile ("xvst $xr21, %0" :"=m"(restore_lasx[21]) :); \
+ asm volatile ("xvst $xr22, %0" :"=m"(restore_lasx[22]) :); \
+ asm volatile ("xvst $xr23, %0" :"=m"(restore_lasx[23]) :); \
+ asm volatile ("xvst $xr24, %0" :"=m"(restore_lasx[24]) :); \
+ asm volatile ("xvst $xr25, %0" :"=m"(restore_lasx[25]) :); \
+ asm volatile ("xvst $xr26, %0" :"=m"(restore_lasx[26]) :); \
+ asm volatile ("xvst $xr27, %0" :"=m"(restore_lasx[27]) :); \
+ asm volatile ("xvst $xr28, %0" :"=m"(restore_lasx[28]) :); \
+ asm volatile ("xvst $xr29, %0" :"=m"(restore_lasx[29]) :); \
+ asm volatile ("xvst $xr30, %0" :"=m"(restore_lasx[30]) :); \
+ asm volatile ("xvst $xr31, %0" :"=m"(restore_lasx[31]) :); \
+ for (int i = 0; i < 32; i++) \
+ for (int j = 0; j < 8; j++) \
+ { \
+ src_lasx[i][j] = 0x01010101 * (i + 1); \
+ if (src_lasx[i][j] != restore_lasx[i][j]) \
+ abort (); \
+ }
+#else
+ #define SAVE_REGISTER_LASX()
+#endif
+
+#define BEFORE_TLSDESC_CALL() \
+ uint64_t src; \
+ double src_float[32]; \
+ uint64_t src_fcc[8]; \
+ for (int i = 0; i < 32; i++) \
+ src_float[i] = i + 1; \
+ \
+ SAVE_REGISTER (src); \
+ LOAD_REGISTER_FCSR (); \
+ SAVE_REGISTER_FCC(src_fcc) \
+ \
+ if (hwcap & HWCAP_LOONGARCH_LASX) \
+ { \
+ LOAD_REGISTER_LASX (); \
+ } \
+ else if (hwcap & HWCAP_LOONGARCH_LSX) \
+ { \
+ LOAD_REGISTER_LSX (); \
+ } \
+ else \
+ { \
+ LOAD_REGISTER_FLOAT (); \
+ }
+
+#define AFTER_TLSDESC_CALL() \
+ uint64_t restore; \
+ uint64_t src_fcsr = 0x01010101; \
+ uint64_t restore_fcsr; \
+ uint64_t restore_fcc[8]; \
+ SAVE_REGISTER (restore); \
+ SAVE_REGISTER_FCSR (); \
+ SAVE_REGISTER_FCC(restore_fcc) \
+ \
+ /* memcmp_lasx/strlen_lasx corrupts LSX/LASX registers, */ \
+ /* compare LSX/LASX registers first. */ \
+ if (hwcap & HWCAP_LOONGARCH_LASX) \
+ { \
+ SAVE_REGISTER_LASX (); \
+ } \
+ else if (hwcap & HWCAP_LOONGARCH_LSX) \
+ { \
+ SAVE_REGISTER_LSX (); \
+ } \
+ else \
+ { \
+ double restore_float[32]; \
+ SAVE_REGISTER_FLOAT (); \
+ \
+ for (int i = 0; i < 32; i++) \
+ if (src_float[i] != restore_float[i]) \
+ abort (); \
+ } \
+ \
+ if (src_fcsr != restore_fcsr) \
+ abort (); \
+ \
+ if (memcmp (src_fcc, restore_fcc, sizeof (src_fcc)) != 0) \
+ abort (); \
+ \
+ if (src != restore) \
+ abort ();
+
+#endif /* #ifdef __loongarch_soft_float */
+
+#include_next <tst-gnu2-tls2.h>
--
2.43.0
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