diff options
33 files changed, 1394 insertions, 100 deletions
diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index b25946461..cb2d4d1a2 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -521,7 +521,6 @@ config UCLIBC_HAS_THREADS_NATIVE !TARGET_hppa && \ !TARGET_ia64 && \ !TARGET_m68k && \ - !TARGET_microblaze && \ !TARGET_nds32 && \ !TARGET_nios2 && \ !TARGET_or1k && \ diff --git a/include/elf.h b/include/elf.h index 17a6143b5..cca3d3832 100644 --- a/include/elf.h +++ b/include/elf.h @@ -3234,30 +3234,37 @@ typedef Elf32_Addr Elf32_Conflict; #define DT_C6000_NUM 4 -/* microblaze specific relocs */ -#define R_MICROBLAZE_NONE 0 -#define R_MICROBLAZE_32 1 -#define R_MICROBLAZE_32_PCREL 2 -#define R_MICROBLAZE_64_PCREL 3 -#define R_MICROBLAZE_32_PCREL_LO 4 -#define R_MICROBLAZE_64 5 -#define R_MICROBLAZE_32_LO 6 -#define R_MICROBLAZE_SRO32 7 -#define R_MICROBLAZE_SRW32 8 -#define R_MICROBLAZE_64_NONE 9 -#define R_MICROBLAZE_32_SYM_OP_SYM 10 -#define R_MICROBLAZE_GNU_VTINHERIT 11 -#define R_MICROBLAZE_GNU_VTENTRY 12 -#define R_MICROBLAZE_GOTPC_64 13 /* PC-relative GOT offset */ -#define R_MICROBLAZE_GOT_64 14 /* GOT entry offset */ -#define R_MICROBLAZE_PLT_64 15 /* PLT offset (PC-relative */ -#define R_MICROBLAZE_REL 16 /* adjust by program base */ -#define R_MICROBLAZE_JUMP_SLOT 17 /* create PLT entry */ -#define R_MICROBLAZE_GLOB_DAT 18 /* create GOT entry */ -#define R_MICROBLAZE_GOTOFF_64 19 /* offset relative to GOT */ -#define R_MICROBLAZE_GOTOFF_32 20 /* offset relative to GOT */ -#define R_MICROBLAZE_COPY 21 /* runtime copy */ -#define R_MICROBLAZE_NUM 22 +/* MicroBlaze relocations */ +#define R_MICROBLAZE_NONE 0 /* No reloc. */ +#define R_MICROBLAZE_32 1 /* Direct 32 bit. */ +#define R_MICROBLAZE_32_PCREL 2 /* PC relative 32 bit. */ +#define R_MICROBLAZE_64_PCREL 3 /* PC relative 64 bit. */ +#define R_MICROBLAZE_32_PCREL_LO 4 /* Low 16 bits of PCREL32. */ +#define R_MICROBLAZE_64 5 /* Direct 64 bit. */ +#define R_MICROBLAZE_32_LO 6 /* Low 16 bit. */ +#define R_MICROBLAZE_SRO32 7 /* Read-only small data area. */ +#define R_MICROBLAZE_SRW32 8 /* Read-write small data area. */ +#define R_MICROBLAZE_64_NONE 9 /* No reloc. */ +#define R_MICROBLAZE_32_SYM_OP_SYM 10 /* Symbol Op Symbol relocation. */ +#define R_MICROBLAZE_GNU_VTINHERIT 11 /* GNU C++ vtable hierarchy. */ +#define R_MICROBLAZE_GNU_VTENTRY 12 /* GNU C++ vtable member usage. */ +#define R_MICROBLAZE_GOTPC_64 13 /* PC-relative GOT offset. */ +#define R_MICROBLAZE_GOT_64 14 /* GOT entry offset. */ +#define R_MICROBLAZE_PLT_64 15 /* PLT offset (PC-relative). */ +#define R_MICROBLAZE_REL 16 /* Adjust by program base. */ +#define R_MICROBLAZE_JUMP_SLOT 17 /* Create PLT entry. */ +#define R_MICROBLAZE_GLOB_DAT 18 /* Create GOT entry. */ +#define R_MICROBLAZE_GOTOFF_64 19 /* 64 bit offset to GOT. */ +#define R_MICROBLAZE_GOTOFF_32 20 /* 32 bit offset to GOT. */ +#define R_MICROBLAZE_COPY 21 /* Runtime copy. */ +#define R_MICROBLAZE_TLS 22 /* TLS Reloc. */ +#define R_MICROBLAZE_TLSGD 23 /* TLS General Dynamic. */ +#define R_MICROBLAZE_TLSLD 24 /* TLS Local Dynamic. */ +#define R_MICROBLAZE_TLSDTPMOD32 25 /* TLS Module ID. */ +#define R_MICROBLAZE_TLSDTPREL32 26 /* TLS Offset Within TLS Block. */ +#define R_MICROBLAZE_TLSDTPREL64 27 /* TLS Offset Within TLS Block. */ +#define R_MICROBLAZE_TLSGOTTPREL32 28 /* TLS Offset From Thread Pointer. */ +#define R_MICROBLAZE_TLSTPREL32 29 /* TLS Offset From Thread Pointer. */ /* Meta relocations */ #define R_METAG_HIADDR16 0 diff --git a/ldso/ldso/microblaze/dl-debug.h b/ldso/ldso/microblaze/dl-debug.h index 6fd7bd59f..30b27bb2a 100644 --- a/ldso/ldso/microblaze/dl-debug.h +++ b/ldso/ldso/microblaze/dl-debug.h @@ -51,4 +51,12 @@ static const char * const _dl_reltypes_tab[] = "R_MICROBLAZE_GOTOFF_64", "R_MICROBLAZE_GOTOFF_32", "R_MICROBLAZE_COPY", + "R_MICROBLAZE_TLS", + "R_MICROBLAZE_TLSGD", + "R_MICROBLAZE_TLSLD", + "R_MICROBLAZE_TLSDTPMOD32", + "R_MICROBLAZE_TLSDTPREL32", + "R_MICROBLAZE_TLSDTPREL64", + "R_MICROBLAZE_TLSGOTTPREL32", + "R_MICROBLAZE_TLSTPREL32", }; diff --git a/ldso/ldso/microblaze/dl-startup.h b/ldso/ldso/microblaze/dl-startup.h index ba15a87c3..720c53aab 100644 --- a/ldso/ldso/microblaze/dl-startup.h +++ b/ldso/ldso/microblaze/dl-startup.h @@ -78,9 +78,6 @@ _dl_start_user:\n\ */ #define GET_ARGV(ARGVP, ARGS) ARGVP = (((unsigned long*) ARGS)+1) -/* The ld.so library requires relocations */ -#define ARCH_NEEDS_BOOTSTRAP_RELOCS - static __always_inline void PERFORM_BOOTSTRAP_RELOC(ELF_RELOC *rpnt, unsigned long *reloc_addr, unsigned long symbol_addr, unsigned long load_addr, attribute_unused Elf32_Sym *symtab) diff --git a/ldso/ldso/microblaze/dl-sysdep.h b/ldso/ldso/microblaze/dl-sysdep.h index b293d27cc..43200271e 100644 --- a/ldso/ldso/microblaze/dl-sysdep.h +++ b/ldso/ldso/microblaze/dl-sysdep.h @@ -1,5 +1,3 @@ -/* elf reloc code for the microblaze platform, based on glibc 2.3.6, dl-machine.h */ - /* The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -15,37 +13,41 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -/* Use reloca */ #define ELF_USES_RELOCA #include <elf.h> - /* Initialise the GOT */ -#define INIT_GOT(GOT_BASE,MODULE) \ -do { \ - GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \ - GOT_BASE[1] = (unsigned long) MODULE; \ +#define INIT_GOT(GOT_BASE,MODULE) \ +do { \ + GOT_BASE[1] = (unsigned long) MODULE; \ + GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \ } while(0) /* Here we define the magic numbers that this dynamic loader should accept */ - #define MAGIC1 EM_MICROBLAZE #undef MAGIC2 /* Used for error messages */ #define ELF_TARGET "microblaze" +/* Need bootstrap relocations */ +#define ARCH_NEEDS_BOOTSTRAP_RELOCS + struct elf_resolve; unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry); #define elf_machine_type_class(type) \ - (((type) == R_MICROBLAZE_JUMP_SLOT) * ELF_RTYPE_CLASS_PLT \ + (((type) == R_MICROBLAZE_JUMP_SLOT || \ + (type) == R_MICROBLAZE_TLSDTPREL32 || \ + (type) == R_MICROBLAZE_TLSDTPMOD32 || \ + (type) == R_MICROBLAZE_TLSTPREL32) \ + * ELF_RTYPE_CLASS_PLT \ | ((type) == R_MICROBLAZE_COPY) * ELF_RTYPE_CLASS_COPY) /* Return the link-time address of _DYNAMIC. Conveniently, this is the first element of the GOT. This must be inlined in a function which uses global data. */ -static inline Elf32_Addr +static __always_inline Elf32_Addr __attribute__ ((unused)) elf_machine_dynamic (void) { Elf32_Addr got_entry_0; @@ -56,7 +58,6 @@ elf_machine_dynamic (void) return got_entry_0; } - /* Return the run-time load address of the shared object. */ static inline Elf32_Addr elf_machine_load_address (void) @@ -64,6 +65,7 @@ elf_machine_load_address (void) /* Compute the difference between the runtime address of _DYNAMIC as seen by a GOTOFF reference, and the link-time address found in the special unrelocated first GOT entry. */ + Elf32_Addr dyn; __asm__ __volatile__ ( "addik %0,r20,_DYNAMIC@GOTOFF" @@ -72,8 +74,6 @@ elf_machine_load_address (void) return dyn - elf_machine_dynamic (); } - - static __always_inline void elf_machine_relative (Elf32_Addr load_off, const Elf32_Addr rel_addr, Elf32_Word relative_count) diff --git a/ldso/ldso/microblaze/elfinterp.c b/ldso/ldso/microblaze/elfinterp.c index 1f6aeffb7..33aef2f3e 100644 --- a/ldso/ldso/microblaze/elfinterp.c +++ b/ldso/ldso/microblaze/elfinterp.c @@ -214,16 +214,13 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope, case R_MICROBLAZE_NONE: case R_MICROBLAZE_64_NONE: break; - case R_MICROBLAZE_64: *reloc_addr = symbol_addr + rpnt->r_addend; break; - case R_MICROBLAZE_32: case R_MICROBLAZE_32_LO: *reloc_addr = symbol_addr + rpnt->r_addend; break; - case R_MICROBLAZE_32_PCREL: case R_MICROBLAZE_32_PCREL_LO: case R_MICROBLAZE_64_PCREL: @@ -231,16 +228,25 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope, case R_MICROBLAZE_SRW32: *reloc_addr = symbol_addr + rpnt->r_addend; break; - case R_MICROBLAZE_GLOB_DAT: case R_MICROBLAZE_JUMP_SLOT: *reloc_addr = symbol_addr + rpnt->r_addend; break; -/* Handled by elf_machine_relative */ case R_MICROBLAZE_REL: *reloc_addr = (unsigned long)tpnt->loadaddr + rpnt->r_addend; break; - +#if defined USE_TLS && USE_TLS + case R_MICROBLAZE_TLSDTPMOD32: + *reloc_addr = tls_tpnt->l_tls_modid; + break; + case R_MICROBLAZE_TLSDTPREL32: + *reloc_addr = symbol_addr; + break; + case R_MICROBLAZE_TLSTPREL32: + CHECK_STATIC_TLS ((struct link_map *) tls_tpnt); + *reloc_addr = tls_tpnt->l_tls_offset + symbol_addr + rpnt->r_addend; + break; +#endif case R_MICROBLAZE_COPY: if (symbol_addr) { #if defined (__SUPPORT_LD_DEBUG__) @@ -250,7 +256,6 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope, symname, sym_ref.sym->st_size, symbol_addr, reloc_addr); #endif - _dl_memcpy((char *)reloc_addr, (char *)symbol_addr, sym_ref.sym->st_size); @@ -260,7 +265,6 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope, _dl_dprintf(_dl_debug_file, "no symbol_addr to copy !?\n"); #endif break; - default: return -1; /* Calls _dl_exit(1). */ } @@ -279,14 +283,12 @@ _dl_do_lazy_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope, ELF_RELOC *rpnt, ElfW(Sym) *symtab, char *strtab) { int reloc_type; - int symtab_index; ElfW(Addr) *reloc_addr; #if defined (__SUPPORT_LD_DEBUG__) ElfW(Addr) old_val; #endif (void)scope; - symtab_index = ELF_R_SYM(rpnt->r_info); (void)strtab; reloc_addr = (ElfW(Addr)*)(tpnt->loadaddr + rpnt->r_offset); diff --git a/libc/sysdeps/linux/microblaze/Makefile.arch b/libc/sysdeps/linux/microblaze/Makefile.arch index e23515ed0..b89f7f945 100644 --- a/libc/sysdeps/linux/microblaze/Makefile.arch +++ b/libc/sysdeps/linux/microblaze/Makefile.arch @@ -5,5 +5,5 @@ # # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. -CSRC-y := +CSRC-y := __syscall_error.c SSRC-y := setjmp.S __longjmp.S vfork.S clone.S diff --git a/libc/sysdeps/linux/microblaze/__syscall_error.c b/libc/sysdeps/linux/microblaze/__syscall_error.c new file mode 100644 index 000000000..2b642e816 --- /dev/null +++ b/libc/sysdeps/linux/microblaze/__syscall_error.c @@ -0,0 +1,18 @@ +/* Wrapper for setting errno. + * + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <errno.h> +#include <features.h> + +/* This routine is jumped to by all the syscall handlers, to stash + * an error number into errno. */ +int __syscall_error(int err_no) attribute_hidden; +int __syscall_error(int err_no) +{ + __set_errno(-err_no); + return -1; +} diff --git a/libc/sysdeps/linux/microblaze/bits/uClibc_arch_features.h b/libc/sysdeps/linux/microblaze/bits/uClibc_arch_features.h index ea767abbf..321d699b0 100644 --- a/libc/sysdeps/linux/microblaze/bits/uClibc_arch_features.h +++ b/libc/sysdeps/linux/microblaze/bits/uClibc_arch_features.h @@ -6,8 +6,7 @@ #define _BITS_UCLIBC_ARCH_FEATURES_H /* instruction used when calling abort() to kill yourself */ -/*#define __UCLIBC_ABORT_INSTRUCTION__ "asm instruction"*/ -#undef __UCLIBC_ABORT_INSTRUCTION__ +#define __UCLIBC_ABORT_INSTRUCTION__ "brki r0, -1" /* can your target use syscall6() for mmap ? */ #define __UCLIBC_MMAP_HAS_6_ARGS__ diff --git a/libc/sysdeps/linux/microblaze/clone.S b/libc/sysdeps/linux/microblaze/clone.S index 46d4fe6b4..69c20453f 100644 --- a/libc/sysdeps/linux/microblaze/clone.S +++ b/libc/sysdeps/linux/microblaze/clone.S @@ -23,6 +23,10 @@ #define _ERRNO_H 1 #include <bits/errno.h> +#if defined __UCLIBC_HAS_THREADS__ && !defined __UCLIBC_HAS_LINUXTHREADS__ +#include <sysdep-cancel.h> +#endif + /* int clone (int (*fn)(void *arg), void *child_stack, int flags, void *arg, pid_t *ptid, struct user_desc *tls, pid_t *ctid); @@ -39,8 +43,8 @@ .text ENTRY (__clone) addik r3,r0,-EINVAL - beqi r5,1f ; // Invalid func - beqi r6,1f ; // Invalid stack + beqi r5,SYSCALL_ERROR_LABEL ; // Invalid func + beqi r6,SYSCALL_ERROR_LABEL ; // Invalid stack addik r6,r6,-8 swi r5,r6,0 ; // Push fn onto child's stack swi r8,r6,4 ; // Push arg for child @@ -53,7 +57,7 @@ ENTRY (__clone) addk r0,r0,r0 addik r4,r0,-4095 cmpu r4,r4,r3 - bgei r4,1f + bgei r4,SYSCALL_ERROR_LABEL beqi r3,L(thread_start) rtsd r15,8 nop @@ -67,12 +71,7 @@ L(thread_start): addik r12,r0,SYS_ify(exit) brki r14,8 nop - -1: rsubk r3,r3,r0 - rtsd r15,8 - addik r3,r0,-1 /* delay slot. */ - -END(__clone) +PSEUDO_END(__clone) libc_hidden_def (__clone) weak_alias (__clone,clone) diff --git a/libc/sysdeps/linux/microblaze/jmpbuf-offsets.h b/libc/sysdeps/linux/microblaze/jmpbuf-offsets.h deleted file mode 100644 index c6cccc739..000000000 --- a/libc/sysdeps/linux/microblaze/jmpbuf-offsets.h +++ /dev/null @@ -1,6 +0,0 @@ -/* - * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> - * - * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. - */ -#define JB_SIZE (4 * 18) diff --git a/libc/sysdeps/linux/microblaze/jmpbuf-unwind.h b/libc/sysdeps/linux/microblaze/jmpbuf-unwind.h index 2c1c0793c..155792b37 100644 --- a/libc/sysdeps/linux/microblaze/jmpbuf-unwind.h +++ b/libc/sysdeps/linux/microblaze/jmpbuf-unwind.h @@ -10,3 +10,28 @@ containing a local variable at ADDRESS. */ #define _JMPBUF_UNWINDS(jmpbuf, address) \ ((void *) (address) < (void *) (jmpbuf)[0].__sp) + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <stdint.h> +#include <unwind.h> + +/* Test if longjmp to JMPBUF would unwind the frame + containing a local variable at ADDRESS. */ +#undef _JMPBUF_UNWINDS +#define _JMPBUF_UNWINDS(jmpbuf, address) \ + ((void *) (address) < (void *) (jmpbuf)[0].__sp) + +#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ + _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj) + +static inline uintptr_t __attribute__ ((unused)) +_jmpbuf_sp (__jmp_buf regs) +{ + void *sp = (void *) regs[0].__sp; + return (uintptr_t) sp; +} + +#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ + ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj)) + +#endif diff --git a/libc/sysdeps/linux/microblaze/sysdep.h b/libc/sysdeps/linux/microblaze/sysdep.h index 1f01a2a1d..a463d339e 100644 --- a/libc/sysdeps/linux/microblaze/sysdep.h +++ b/libc/sysdeps/linux/microblaze/sysdep.h @@ -1,9 +1,25 @@ +/* Copyright (C) 2000-2016 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 <common/sysdep.h> #ifdef __ASSEMBLER__ -/* Syntactic details of assembler. */ - # define ALIGNARG(log2) log2 # define ASM_SIZE_DIRECTIVE(name) .size name,.-name @@ -22,4 +38,67 @@ # define L(name) $L##name # endif +/* We don't want the label for the error handler to be visible in the symbol + table when we define it here. */ +# ifdef __PIC__ +# define SYSCALL_ERROR_LABEL 0f +# else +# define SYSCALL_ERROR_LABEL __syscall_error +# endif + +# define DO_CALL(syscall_name, args) \ + addik r12,r0,SYS_ify (syscall_name); \ + brki r14,8; \ + addk r0,r0,r0; + +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ + .text; \ + ENTRY (name) \ + DO_CALL (syscall_name, args); \ + addik r12,r0,-4095; \ + cmpu r12,r12,r3; \ + bgei r12,SYSCALL_ERROR_LABEL; + +# undef PSEUDO_END +# define PSEUDO_END(name) \ + SYSCALL_ERROR_HANDLER; \ + END (name) + +#ifdef __PIC__ +# define SYSCALL_ERROR_LABEL_DCL 0 +# if defined _LIBC_REENTRANT +# define SYSCALL_ERROR_HANDLER \ +SYSCALL_ERROR_LABEL_DCL: \ + addik r1,r1,-16; \ + swi r15,r1,0; \ + swi r20,r1,8; \ + rsubk r3,r3,r0; \ + swi r3,r1,12; \ + mfs r20,rpc; \ + addik r20,r20,_GLOBAL_OFFSET_TABLE_+8; \ + brlid r15,__errno_location@PLT; \ + nop; \ + lwi r4,r1,12; \ + swi r4,r3,0; \ + lwi r20,r1,8; \ + lwi r15,r1,0; \ + addik r1,r1,16; \ + rtsd r15,8; \ + addik r3,r0,-1; +# else /* !_LIBC_REENTRANT. */ +# define SYSCALL_ERROR_HANDLER \ +SYSCALL_ERROR_LABEL_DCL: \ + mfs r12,rpc; \ + addik r12,r12,_GLOBAL_OFFSET_TABLE_+8; \ + lwi r12,r12,errno@GOT; \ + rsubk r3,r3,r0; \ + swi r3,r12,0; \ + rtsd r15,8; \ + addik r3,r0,-1; +# endif /* _LIBC_REENTRANT. */ +#else +# define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */ +#endif /* PIC. */ + #endif diff --git a/libc/sysdeps/linux/microblaze/vfork.S b/libc/sysdeps/linux/microblaze/vfork.S index cadd1167d..11b9e2758 100644 --- a/libc/sysdeps/linux/microblaze/vfork.S +++ b/libc/sysdeps/linux/microblaze/vfork.S @@ -1,42 +1,44 @@ -/* - * libc/sysdeps/linux/microblaze/vfork.S -- `vfork' syscall for linux/microblaze - * - * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> - * Copyright (C) 2001 NEC Corporation - * Copyright (C) 2001 Miles Bader <miles@gnu.org> - * - * This file is subject to the terms and conditions of the GNU Lesser - * General Public License. See the file COPYING.LIB in the main - * directory of this archive for more details. - * - * Written by Miles Bader <miles@gnu.org> - * Microblaze port by John Williams - */ - -#include <sys/syscall.h> +/* Copyright (C) 2005-2016 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 <sysdep.h> +#define _ERRNO_H 1 +#include <bits/errno.h> /* Clone the calling process, but without copying the whole address space. The calling process is suspended until the new process exits or is replaced by a call to `execve'. Return -1 for errors, 0 to the new process, and the process ID of the new process to the old process. */ - .globl __vfork - .hidden __vfork - .align 4 -__vfork: - addi r12, r0, SYS_vfork - brki r14, 0x08; - addi r4, r3, 125 /* minimum err value */ - blti r4, 1f /* is r3 < -125? */ - bri 2f /* normal return */ +ENTRY(__vfork) + + DO_CALL (vfork, 0) + addik r12,r0,-4095 + cmpu r12,r12,r3 + bgei r12,1f + rtsd r15,8 + nop 1: rsubk r3,r3,r0 rtsd r15,8 addik r3,r0,-1 /* delay slot. */ -2: rtsd r15, 8 /* error return */ - nop - .size __vfork, .-__vfork +END(__vfork) weak_alias(__vfork, vfork) libc_hidden_def(vfork) diff --git a/libpthread/nptl/sysdeps/microblaze/Makefile.arch b/libpthread/nptl/sysdeps/microblaze/Makefile.arch new file mode 100644 index 000000000..b69fb48da --- /dev/null +++ b/libpthread/nptl/sysdeps/microblaze/Makefile.arch @@ -0,0 +1,4 @@ +# Makefile for uClibc NPTL +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + +libc_arch_a_CSRC = libc-tls.c diff --git a/libpthread/nptl/sysdeps/microblaze/dl-tls.h b/libpthread/nptl/sysdeps/microblaze/dl-tls.h new file mode 100644 index 000000000..5613e21e2 --- /dev/null +++ b/libpthread/nptl/sysdeps/microblaze/dl-tls.h @@ -0,0 +1,26 @@ +/* Copyright (C) 2005-2016 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/>. */ + +/* Type used for the representation of TLS information in the GOT. */ +typedef struct +{ + unsigned long int ti_module; + unsigned long int ti_offset; +} tls_index; + +extern void *__tls_get_addr (tls_index *ti); diff --git a/libpthread/nptl/sysdeps/microblaze/libc-tls.c b/libpthread/nptl/sysdeps/microblaze/libc-tls.c new file mode 100644 index 000000000..7f440fb06 --- /dev/null +++ b/libpthread/nptl/sysdeps/microblaze/libc-tls.c @@ -0,0 +1,36 @@ +/* Copyright (C) 2005-2016 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 <sysdeps/generic/libc-tls.c> +#include <dl-tls.h> + +/* On Microblaze, linker optimizations are not required, so __tls_get_addr + can be called even in statically linked binaries. In this case module + must be always 1 and PT_TLS segment exist in the binary, otherwise it + would not link. */ + +#if defined(USE_TLS) && USE_TLS + +void * +__tls_get_addr (tls_index *ti) +{ + dtv_t *dtv = THREAD_DTV (); + return (char *) dtv[1].pointer.val + ti->ti_offset; +} + +#endif diff --git a/libpthread/nptl/sysdeps/microblaze/pthread_spin_lock.c b/libpthread/nptl/sysdeps/microblaze/pthread_spin_lock.c new file mode 100644 index 000000000..e393a73ac --- /dev/null +++ b/libpthread/nptl/sysdeps/microblaze/pthread_spin_lock.c @@ -0,0 +1,62 @@ +/* pthread_spin_lock -- lock a spin lock. Generic version. + Copyright (C) 2012-2016 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 <atomic.h> +#include "pthreadP.h" + +#define SPIN_LOCK_READS_BETWEEN_CMPXCHG 1000 + +int +pthread_spin_lock (pthread_spinlock_t *lock) +{ + /* atomic_exchange usually takes less instructions than + atomic_compare_and_exchange. On the other hand, + atomic_compare_and_exchange potentially generates less bus traffic + when the lock is locked. + We assume that the first try mostly will be successful, and we use + atomic_exchange. For the subsequent tries we use + atomic_compare_and_exchange. */ + if (atomic_exchange_acq (lock, 1) == 0) + return 0; + + do + { + /* The lock is contended and we need to wait. Going straight back + to cmpxchg is not a good idea on many targets as that will force + expensive memory synchronizations among processors and penalize other + running threads. + On the other hand, we do want to update memory state on the local core + once in a while to avoid spinning indefinitely until some event that + will happen to update local memory as a side-effect. */ + if (SPIN_LOCK_READS_BETWEEN_CMPXCHG >= 0) + { + int wait = SPIN_LOCK_READS_BETWEEN_CMPXCHG; + + while (*lock != 0 && wait > 0) + --wait; + } + else + { + while (*lock != 0) + ; + } + } + while (atomic_compare_and_exchange_val_acq (lock, 1, 0) != 0); + + return 0; +} diff --git a/libpthread/nptl/sysdeps/microblaze/pthread_spin_trylock.c b/libpthread/nptl/sysdeps/microblaze/pthread_spin_trylock.c new file mode 100644 index 000000000..4e1a96c03 --- /dev/null +++ b/libpthread/nptl/sysdeps/microblaze/pthread_spin_trylock.c @@ -0,0 +1,27 @@ +/* pthread_spin_trylock -- trylock a spin lock. Generic version. + Copyright (C) 2012-2016 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 <errno.h> +#include <atomic.h> +#include "pthreadP.h" + +int +pthread_spin_trylock (pthread_spinlock_t *lock) +{ + return atomic_exchange_acq (lock, 1) ? EBUSY : 0; +} diff --git a/libpthread/nptl/sysdeps/microblaze/pthreaddef.h b/libpthread/nptl/sysdeps/microblaze/pthreaddef.h new file mode 100644 index 000000000..47e87dd71 --- /dev/null +++ b/libpthread/nptl/sysdeps/microblaze/pthreaddef.h @@ -0,0 +1,40 @@ +/* Copyright (C) 2002-2016 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 <stdlib.h> +#include <string.h> + +/* Default stack size. */ +#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. */ +#define STACK_ALIGN 16 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 2048 + +/* Alignment requirement for TCB. */ +#define TCB_ALIGNMENT 16 + +/* Location of current stack frame. */ +#define CURRENT_STACK_FRAME __builtin_frame_address (0) + +/* XXX Until we have a better place keep the definitions here. */ + +#define __exit_thread_inline(val) \ +INLINE_SYSCALL (exit, 1, (val)) diff --git a/libpthread/nptl/sysdeps/microblaze/tcb-offsets.sym b/libpthread/nptl/sysdeps/microblaze/tcb-offsets.sym new file mode 100644 index 000000000..18afbee29 --- /dev/null +++ b/libpthread/nptl/sysdeps/microblaze/tcb-offsets.sym @@ -0,0 +1,11 @@ +#include <sysdep.h> +#include <tls.h> + +-- + +-- Abuse tls.h macros to derive offsets relative to the thread register. +#define thread_offsetof(mem) (long)(offsetof (struct pthread, mem) - sizeof (struct pthread)) + +MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads) +PID_OFFSET thread_offsetof (pid) +TID_OFFSET thread_offsetof (tid) diff --git a/libpthread/nptl/sysdeps/microblaze/tls.h b/libpthread/nptl/sysdeps/microblaze/tls.h new file mode 100644 index 000000000..b5bcde95a --- /dev/null +++ b/libpthread/nptl/sysdeps/microblaze/tls.h @@ -0,0 +1,159 @@ +/* Copyright (C) 2005-2016 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 _TLS_H +# define _TLS_H 1 + +#ifndef __ASSEMBLER__ + +# include <stdbool.h> +# include <stddef.h> +# include <stdint.h> + +/* Type for the dtv. */ +typedef union dtv +{ + size_t counter; + struct + { + void *val; + bool is_static; + } pointer; +} dtv_t; + +#else /* __ASSEMBLER__ */ +# include <tcb-offsets.h> +#endif /* __ASSEMBLER__ */ + +/* We require TLS support in the tools. */ +#define HAVE_TLS_SUPPORT 1 +#define HAVE___THREAD 1 +#define HAVE_TLS_MODEL_ATTRIBUTE 1 + +/* Signal that TLS support is available. */ +#define USE_TLS 1 + +#ifndef __ASSEMBLER__ + +/* Get system call information. */ +# include <sysdep.h> + +/* The TP points to the start of the thread blocks. */ +# define TLS_DTV_AT_TP 1 + +/* Get the thread descriptor definition. */ +# include <../../descr.h> + +typedef struct +{ + dtv_t *dtv; + void *private; +} tcbhead_t; + +#define READ_THREAD_POINTER() \ + ({ register void *__microblaze_thread_area __asm__ ("r21"); \ + __microblaze_thread_area; }) + +/* This is the size of the initial TCB. */ +# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) + +/* Alignment requirements for the initial TCB. */ +# define TLS_INIT_TCB_ALIGN 16 + +/* This is the size of the TCB. */ +# define TLS_TCB_SIZE sizeof (tcbhead_t) + +/* This is the size we need before TCB. */ +# define TLS_PRE_TCB_SIZE sizeof (struct pthread) + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN 16 + +/* Install the dtv pointer. The pointer passed is to the element with + index -1 which contain the length. */ +# define INSTALL_DTV(tcbp, dtvp) \ + (((tcbhead_t *) (tcbp))->dtv = (dtvp) + 1) + +/* Install new dtv for current thread. */ +# define INSTALL_NEW_DTV(dtv) \ + (THREAD_DTV() = (dtv)) + +/* Return dtv of given thread descriptor. */ +# define GET_DTV(tcbp) \ + (((tcbhead_t *) (tcbp))->dtv) + +/* Code to initially initialize the thread pointer. + r21 is reserved for thread pointer. */ +# define TLS_INIT_TP(tcbp, secondcall) \ + ({ __asm__ __volatile__ ("or r21,r0,%0" : : "r" ((void *)tcbp)); NULL; }) + +# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = (pd) + 1 + +/* Return the address of the dtv for the current thread. */ +# define THREAD_DTV() \ + (((tcbhead_t *) READ_THREAD_POINTER())->dtv) + +/* Return the thread descriptor for the current thread. */ +# define THREAD_SELF \ + (((struct pthread *) READ_THREAD_POINTER()) - 1) + +/* Magic for libthread_db to know how to do THREAD_SELF. */ +# define DB_THREAD_SELF \ + CONST_THREAD_AREA (32, sizeof (struct pthread)) + +/* Read member of the thread descriptor directly. */ +# define THREAD_GETMEM(descr, member) (descr->member) + +/* Same as THREAD_GETMEM, but the member offset can be non-constant. */ +# define THREAD_GETMEM_NC(descr, member, idx) \ + (descr->member[idx]) + +/* Set member of the thread descriptor directly. */ +# define THREAD_SETMEM(descr, member, value) \ + (descr->member = (value)) + +/* Same as THREAD_SETMEM, but the member offset can be non-constant. */ +# define THREAD_SETMEM_NC(descr, member, idx, value) \ + (descr->member[idx] = (value)) + +/* Get and set the global scope generation counter in struct pthread. */ +# define THREAD_GSCOPE_FLAG_UNUSED 0 +# define THREAD_GSCOPE_FLAG_USED 1 +# define THREAD_GSCOPE_FLAG_WAIT 2 +# define THREAD_GSCOPE_RESET_FLAG() \ + do \ + { int __res \ + = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \ + THREAD_GSCOPE_FLAG_UNUSED); \ + if (__res == THREAD_GSCOPE_FLAG_WAIT) \ + lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \ + } \ + while (0) +# define THREAD_GSCOPE_SET_FLAG() \ + do \ + { \ + THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \ + atomic_write_barrier (); \ + } \ + while (0) +# define THREAD_GSCOPE_WAIT() \ + GL (dl_wait_lookup_done) () + +#endif /* __ASSEMBLER__ */ + +#endif /* tls.h. */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/Makefile b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/Makefile new file mode 100644 index 000000000..729adf6f9 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/Makefile @@ -0,0 +1,13 @@ +# Makefile for uClibc NPTL +# +# Copyright (C) 2005 Steven J. Hill <sjhill@uclibc.org> +# +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. +# + +top_srcdir=../../../../../../../ +top_builddir=../../../../../../../ +all: objs +include $(top_builddir)Rules.mak +include Makefile.arch +include $(top_srcdir)Makerules diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/Makefile.arch new file mode 100644 index 000000000..77707a085 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/Makefile.arch @@ -0,0 +1,8 @@ +# Makefile for uClibc NPTL +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + +libpthread_linux_arch_SSRC = +libpthread_linux_arch_CSRC = pthread_once.c + +libc_linux_arch_CSRC = fork.c +libc_linux_arch_SSRC = clone.S vfork.S diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/bits/pthreadtypes.h new file mode 100644 index 000000000..9e9e307cf --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/bits/pthreadtypes.h @@ -0,0 +1,181 @@ +/* Copyright (C) 2002-2016 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 _BITS_PTHREADTYPES_H +# define _BITS_PTHREADTYPES_H 1 + +# include <endian.h> + +# define __SIZEOF_PTHREAD_ATTR_T 36 +# define __SIZEOF_PTHREAD_MUTEX_T 24 +# define __SIZEOF_PTHREAD_MUTEXATTR_T 4 +# define __SIZEOF_PTHREAD_COND_T 48 +# define __SIZEOF_PTHREAD_COND_COMPAT_T 12 +# define __SIZEOF_PTHREAD_CONDATTR_T 4 +# define __SIZEOF_PTHREAD_RWLOCK_T 32 +# define __SIZEOF_PTHREAD_RWLOCKATTR_T 8 +# define __SIZEOF_PTHREAD_BARRIER_T 20 +# define __SIZEOF_PTHREAD_BARRIERATTR_T 4 + + +/* Thread identifiers. The structure of the attribute type is not + exposed on purpose. */ +typedef unsigned long int pthread_t; + +union pthread_attr_t +{ + char __size[__SIZEOF_PTHREAD_ATTR_T]; + long int __align; +}; + +# ifndef __have_pthread_attr_t +typedef union pthread_attr_t pthread_attr_t; +# define __have_pthread_attr_t 1 +# endif + +typedef struct __pthread_internal_slist +{ + struct __pthread_internal_slist *__next; +} __pthread_slist_t; + +/* Data structures for mutex handling. The structure of the attribute + type is not exposed on purpose. */ +typedef union +{ + struct __pthread_mutex_s + { + int __lock; + unsigned int __count; + int __owner; + /* KIND must stay at this position in the structure to maintain + binary compatibility. */ + int __kind; + unsigned int __nusers; + __extension__ union + { + int __spins; + __pthread_slist_t __list; + }; + } __data; + char __size[__SIZEOF_PTHREAD_MUTEX_T]; + long int __align; +} pthread_mutex_t; + +/* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER. */ +#define __PTHREAD_SPINS 0 + +typedef union +{ + char __size[__SIZEOF_PTHREAD_MUTEXATTR_T]; + int __align; +} pthread_mutexattr_t; + +/* Data structure for conditional variable handling. The structure of + the attribute type is not exposed on purpose. */ +typedef union +{ + struct + { + int __lock; + unsigned int __futex; + __extension__ unsigned long long int __total_seq; + __extension__ unsigned long long int __wakeup_seq; + __extension__ unsigned long long int __woken_seq; + void *__mutex; + unsigned int __nwaiters; + unsigned int __broadcast_seq; + } __data; + char __size[__SIZEOF_PTHREAD_COND_T]; + __extension__ long long int __align; +} pthread_cond_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_CONDATTR_T]; + int __align; +} pthread_condattr_t; + +/* Keys for thread-specific data. */ +typedef unsigned int pthread_key_t; + +/* Once-only execution. */ +typedef int pthread_once_t; + +# if defined __USE_UNIX98 || defined __USE_XOPEN2K +/* Data structure for read-write lock variable handling. The + structure of the attribute type is not exposed on purpose. */ +typedef union +{ + struct + { + int __lock; + unsigned int __nr_readers; + unsigned int __readers_wakeup; + unsigned int __writer_wakeup; + unsigned int __nr_readers_queued; + unsigned int __nr_writers_queued; +# if __BYTE_ORDER == __BIG_ENDIAN + unsigned char __pad1; + unsigned char __pad2; + unsigned char __shared; + /* FLAGS must stay at this position in the structure to maintain + binary compatibility. */ + unsigned char __flags; +# else + /* FLAGS must stay at this position in the structure to maintain + binary compatibility. */ + unsigned char __flags; + unsigned char __shared; + unsigned char __pad1; + unsigned char __pad2; +# endif + int __writer; + } __data; + char __size[__SIZEOF_PTHREAD_RWLOCK_T]; + long int __align; +} pthread_rwlock_t; + +#define __PTHREAD_RWLOCK_ELISION_EXTRA 0 + +typedef union +{ + char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T]; + long int __align; +} pthread_rwlockattr_t; +# endif + +# ifdef __USE_XOPEN2K +/* POSIX spinlock data type. */ +typedef volatile int pthread_spinlock_t; + +/* POSIX barriers data type. The structure of the type is + deliberately not exposed. */ +typedef union +{ + char __size[__SIZEOF_PTHREAD_BARRIER_T]; + long int __align; +} pthread_barrier_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_BARRIERATTR_T]; + int __align; +} pthread_barrierattr_t; +# endif + +#endif /* bits/pthreadtypes.h. */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/bits/semaphore.h b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/bits/semaphore.h new file mode 100644 index 000000000..ea05026a0 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/bits/semaphore.h @@ -0,0 +1,32 @@ +/* Copyright (C) 2002-2016 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 _SEMAPHORE_H +# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead." +#endif + +#define __SIZEOF_SEM_T 16 + +/* Value returned if `sem_open' failed. */ +#define SEM_FAILED ((sem_t *) 0) + +typedef union +{ + char __size[__SIZEOF_SEM_T]; + long int __align; +} sem_t; diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/clone.S new file mode 100644 index 000000000..faa78d936 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/clone.S @@ -0,0 +1,4 @@ +#define RESET_PID +#include <tls.h> +#include <tcb-offsets.h> +#include "../../../../../../../libc/sysdeps/linux/microblaze/clone.S" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/createthread.c b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/createthread.c new file mode 100644 index 000000000..10a9ac39f --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/createthread.c @@ -0,0 +1,22 @@ +/* Copyright (C) 2005 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/>. */ + +/* Value passed to 'clone' for initialization of the thread register. */ +#define TLS_VALUE (pd + 1) + +/* Get the real implementation. */ +#include <sysdeps/pthread/createthread.c> diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/fork.c b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/fork.c new file mode 100644 index 000000000..ba5c700da --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/fork.c @@ -0,0 +1,29 @@ +/* Copyright (C) 2013 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 <sched.h> +#include <signal.h> +#include <sysdep.h> +#include <tls.h> + + +#define ARCH_FORK() \ + INLINE_SYSCALL (clone, 5, \ + CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD, 0, \ + NULL, NULL, &THREAD_SELF->tid) + +#include "../fork.c" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/lowlevellock.h b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/lowlevellock.h new file mode 100644 index 000000000..e8dce9ddb --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/lowlevellock.h @@ -0,0 +1,278 @@ +/* Copyright (C) 2005, 2006, 2007, 2008, 2009 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; see the file COPYING.LIB. If + not, see <http://www.gnu.org/licenses/>. */ + +#ifndef _LOWLEVELLOCK_H +#define _LOWLEVELLOCK_H 1 + +#include <time.h> +#include <sys/param.h> +#include <bits/pthreadtypes.h> +#include <atomic.h> +#include <sysdep.h> +#include <bits/kernel-features.h> + +#define FUTEX_WAIT 0 +#define FUTEX_WAKE 1 +#define FUTEX_REQUEUE 3 +#define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) +#define FUTEX_LOCK_PI 6 +#define FUTEX_UNLOCK_PI 7 +#define FUTEX_TRYLOCK_PI 8 +#define FUTEX_WAIT_BITSET 9 +#define FUTEX_WAKE_BITSET 10 +#define FUTEX_PRIVATE_FLAG 128 +#define FUTEX_CLOCK_REALTIME 256 + +#define FUTEX_BITSET_MATCH_ANY 0xffffffff + +/* Values for 'private' parameter of locking macros. Yes, the + definition seems to be backwards. But it is not. The bit will be + reversed before passing to the system call. */ +#define LLL_PRIVATE 0 +#define LLL_SHARED FUTEX_PRIVATE_FLAG + + +#if !defined NOT_IN_libc || defined IS_IN_rtld +/* In libc.so or ld.so all futexes are private. */ +# ifdef __ASSUME_PRIVATE_FUTEX +# define __lll_private_flag(fl, private) \ + ((fl) | FUTEX_PRIVATE_FLAG) +# else +# define __lll_private_flag(fl, private) \ + ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) +# endif +#else +# ifdef __ASSUME_PRIVATE_FUTEX +# define __lll_private_flag(fl, private) \ + (((fl) | FUTEX_PRIVATE_FLAG) ^ (private)) +# else +# define __lll_private_flag(fl, private) \ + (__builtin_constant_p (private) \ + ? ((private) == 0 \ + ? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) \ + : (fl)) \ + : ((fl) | (((private) ^ FUTEX_PRIVATE_FLAG) \ + & THREAD_GETMEM (THREAD_SELF, header.private_futex)))) +# endif +#endif + + +#define lll_futex_wait(futexp, val, private) \ + lll_futex_timed_wait(futexp, val, NULL, private) + +#define lll_futex_timed_wait(futexp, val, timespec, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __sysret; \ + __sysret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \ + __lll_private_flag (FUTEX_WAIT, private), \ + (val), (timespec)); \ + __sysret; \ + }) + +#define lll_futex_wake(futexp, nr, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __sysret; \ + __sysret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \ + __lll_private_flag (FUTEX_WAKE, private), \ + (nr), 0); \ + __sysret; \ + }) + +#define lll_robust_dead(futexv, private) \ + do \ + { \ + int *__futexp = &(futexv); \ + atomic_or (__futexp, FUTEX_OWNER_DIED); \ + lll_futex_wake (__futexp, 1, private); \ + } \ + while (0) + +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __sysret; \ + __sysret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (FUTEX_CMP_REQUEUE, private),\ + (nr_wake), (nr_move), (mutex), (val)); \ + INTERNAL_SYSCALL_ERROR_P (__sysret, __err); \ + }) + + +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __sysret; \ + __sysret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (FUTEX_WAKE_OP, private), \ + (nr_wake), (nr_wake2), (futexp2), \ + FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ + INTERNAL_SYSCALL_ERROR_P (__sysret, __err); \ + }) + + +#define lll_trylock(lock) \ + atomic_compare_and_exchange_val_acq(&(lock), 1, 0) + +#define lll_cond_trylock(lock) \ + atomic_compare_and_exchange_val_acq(&(lock), 2, 0) + +#define __lll_robust_trylock(futex, id) \ + (atomic_compare_and_exchange_val_acq (futex, id, 0) != 0) +#define lll_robust_trylock(lock, id) \ + __lll_robust_trylock (&(lock), id) + +extern void __lll_lock_wait_private (int *futex) attribute_hidden; +extern void __lll_lock_wait (int *futex, int private) attribute_hidden; +extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden; + +#define __lll_lock(futex, private) \ + ((void) ({ \ + int *__futex = (futex); \ + if (unlikely(atomic_compare_and_exchange_val_acq (__futex, 1, 0))) \ + { \ + if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \ + __lll_lock_wait_private (__futex); \ + else \ + __lll_lock_wait (__futex, private); \ + } \ + })) +#define lll_lock(futex, private) __lll_lock (&(futex), private) + + +#define __lll_robust_lock(futex, id, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (unlikely(atomic_compare_and_exchange_bool_acq (__futex, id, 0))) \ + __val = __lll_robust_lock_wait (__futex, private); \ + __val; \ + }) +#define lll_robust_lock(futex, id, private) \ + __lll_robust_lock (&(futex), id, private) + + +#define __lll_cond_lock(futex, private) \ + ((void) ({ \ + int *__futex = (futex); \ + if (unlikely(atomic_exchange_acq (__futex, 2))) \ + __lll_lock_wait (__futex, private); \ + })) +#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private) + + +#define lll_robust_cond_lock(futex, id, private) \ + __lll_robust_lock (&(futex), (id) | FUTEX_WAITERS, private) + + +extern int __lll_timedlock_wait (int *futex, const struct timespec *, + int private) attribute_hidden; +extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *, + int private) attribute_hidden; + +#define __lll_timedlock(futex, abstime, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (unlikely(atomic_exchange_acq (__futex, 1))) \ + __val = __lll_timedlock_wait (__futex, abstime, private); \ + __val; \ + }) +#define lll_timedlock(futex, abstime, private) \ + __lll_timedlock (&(futex), abstime, private) + + +#define __lll_robust_timedlock(futex, abstime, id, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (unlikely(atomic_compare_and_exchange_bool_acq (__futex, id, 0))) \ + __val = __lll_robust_timedlock_wait (__futex, abstime, private); \ + __val; \ + }) +#define lll_robust_timedlock(futex, abstime, id, private) \ + __lll_robust_timedlock (&(futex), abstime, id, private) + + +#define __lll_unlock(futex, private) \ + (void) \ + ({ int *__futex = (futex); \ + int __oldval = atomic_exchange_rel (__futex, 0); \ + if (unlikely(__oldval > 1)) \ + lll_futex_wake (__futex, 1, private); \ + }) +#define lll_unlock(futex, private) __lll_unlock(&(futex), private) + + +#define __lll_robust_unlock(futex, private) \ + (void) \ + ({ int *__futex = (futex); \ + int __oldval = atomic_exchange_rel (__futex, 0); \ + if (unlikely(__oldval & FUTEX_WAITERS)) \ + lll_futex_wake (__futex, 1, private); \ + }) +#define lll_robust_unlock(futex, private) \ + __lll_robust_unlock(&(futex), private) + + +#define lll_islocked(futex) \ + (futex != 0) + + +/* Our internal lock implementation is identical to the binary-compatible + mutex implementation. */ + +/* Initializers for lock. */ +#define LLL_LOCK_INITIALIZER (0) +#define LLL_LOCK_INITIALIZER_LOCKED (1) + +/* The states of a lock are: + 0 - untaken + 1 - taken by one user + >1 - taken by more users */ + +/* The kernel notifies a process which uses CLONE_CLEARTID via futex + wakeup when the clone terminates. The memory location contains the + thread ID while the clone is running and is reset to zero + afterwards. */ +#define lll_wait_tid(tid) \ + do { \ + __typeof (tid) __tid; \ + while ((__tid = (tid)) != 0) \ + lll_futex_wait (&(tid), __tid, LLL_SHARED);\ + } while (0) + +extern int __lll_timedwait_tid (int *, const struct timespec *) + attribute_hidden; + +#define lll_timedwait_tid(tid, abstime) \ + ({ \ + int __res = 0; \ + if ((tid) != 0) \ + __res = __lll_timedwait_tid (&(tid), (abstime)); \ + __res; \ + }) + +#endif /* lowlevellock.h */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/pthread_once.c b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/pthread_once.c new file mode 100644 index 000000000..46085d3b5 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/pthread_once.c @@ -0,0 +1,89 @@ +/* Copyright (C) 2004-2013 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 "pthreadP.h" +#include <lowlevellock.h> + +unsigned long int __fork_generation attribute_hidden; + +static void +clear_once_control (void *arg) +{ + pthread_once_t *once_control = (pthread_once_t *) arg; + + *once_control = 0; + lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE); +} + +int +__pthread_once (pthread_once_t *once_control, void (*init_routine) (void)) +{ + for (;;) + { + int oldval; + int newval; + + /* Pseudo code: + newval = __fork_generation | 1; + oldval = *once_control; + if ((oldval & 2) == 0) + *once_control = newval; + Do this atomically. + */ + do + { + newval = __fork_generation | 1; + oldval = *once_control; + if (oldval & 2) + break; + } while (atomic_compare_and_exchange_val_acq (once_control, newval, oldval) != oldval); + + /* Check if the initializer has already been done. */ + if ((oldval & 2) != 0) + return 0; + + /* Check if another thread already runs the initializer. */ + if ((oldval & 1) == 0) + break; + + /* Check whether the initializer execution was interrupted by a fork. */ + if (oldval != newval) + break; + + /* Same generation, some other thread was faster. Wait. */ + lll_futex_wait (once_control, oldval, LLL_PRIVATE); + } + + /* This thread is the first here. Do the initialization. + Register a cleanup handler so that in case the thread gets + interrupted the initialization can be restarted. */ + pthread_cleanup_push (clear_once_control, once_control); + + init_routine (); + + pthread_cleanup_pop (0); + + /* Say that the initialisation is done. */ + *once_control = __fork_generation | 2; + + /* Wake up all other threads. */ + lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE); + + return 0; +} +weak_alias (__pthread_once, pthread_once) +strong_alias (__pthread_once, __pthread_once_internal) diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h new file mode 100644 index 000000000..2af79cab5 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h @@ -0,0 +1,139 @@ +/* Copyright (C) 2014-2016 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 <sysdep.h> +#include <tls.h> +#ifndef __ASSEMBLER__ +# include <pthreadP.h> +#endif + +#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt + +#ifdef __ASSEMBLER__ + +#undef ret +#define ret + +# if !IS_IN_librt || !defined(PIC) +# define AC_STACK_SIZE 16 /* space for r15, async_cancel arg and 2 temp words */ +# define AC_SET_GOT /* empty */ +# define AC_RESTORE_GOT /* empty */ +# else +# define AC_STACK_SIZE 20 /* extra 4 bytes for r20 */ +# define AC_SET_GOT \ + swi r20, r1, AC_STACK_SIZE-4; \ + mfs r20, rpc; \ + addik r20, r20, _GLOBAL_OFFSET_TABLE_+8; +# define AC_RESTORE_GOT \ + lwi r20, r1, AC_STACK_SIZE-4; +# endif + +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ + .text; \ + ENTRY (name) \ + SINGLE_THREAD_P(r12); \ + bnei r12, L(pseudo_cancel); \ + .globl __##syscall_name##_nocancel; \ + .type __##syscall_name##_nocancel,@function; \ +__##syscall_name##_nocancel: \ + DO_CALL (syscall_name, args); \ + addik r4, r0, -4095; \ + cmpu r4, r4, r3; \ + rsubk r3,r3,r0; \ + rtsd r15,8; \ + addik r3,r0,-1; \ + rtsd r15, 8; \ + nop; \ + .size __##syscall_name##_nocancel, .-__##syscall_name##_nocancel; \ +L(pseudo_cancel): \ + addik r1, r1, -AC_STACK_SIZE; \ + swi r15, r1, 0; \ + AC_SET_GOT \ + DOCARGS_##args \ + CENABLE; \ + swi r3, r1, 8; \ + UNDOCARGS_##args \ + DO_CALL (syscall_name, args); \ + swi r3, r1, 12; \ + lwi r5, r1, 8; \ + CDISABLE; \ + lwi r3, r1, 12; \ + lwi r15, r1, 0; \ + AC_RESTORE_GOT \ + addik r1, r1, AC_STACK_SIZE; \ + addik r4, r0, -4095; \ + cmpu r4, r4, r3; \ + rsubk r3,r3,r0; \ + rtsd r15,8; \ + addik r3,r0,-1; \ + rtsd r15, 8; \ + nop; + +/* + * Macros to save/restore syscall arguments across CENABLE + * The arguments are saved into the caller's stack (original r1 + 4) + */ + +# define DOCARGS_0 +# define DOCARGS_1 swi r5, r1, AC_STACK_SIZE + 4; +# define DOCARGS_2 swi r6, r1, AC_STACK_SIZE + 8; DOCARGS_1 +# define DOCARGS_3 swi r7, r1, AC_STACK_SIZE + 12; DOCARGS_2 +# define DOCARGS_4 swi r8, r1, AC_STACK_SIZE + 16; DOCARGS_3 +# define DOCARGS_5 swi r9, r1, AC_STACK_SIZE + 20; DOCARGS_4 +# define DOCARGS_6 swi r10, r1, AC_STACK_SIZE + 24; DOCARGS_5 + +# define UNDOCARGS_0 +# define UNDOCARGS_1 lwi r5, r1, AC_STACK_SIZE + 4; +# define UNDOCARGS_2 UNDOCARGS_1 lwi r6, r1, AC_STACK_SIZE + 8; +# define UNDOCARGS_3 UNDOCARGS_2 lwi r7, r1, AC_STACK_SIZE + 12; +# define UNDOCARGS_4 UNDOCARGS_3 lwi r8, r1, AC_STACK_SIZE + 16; +# define UNDOCARGS_5 UNDOCARGS_4 lwi r9, r1, AC_STACK_SIZE + 20; +# define UNDOCARGS_6 UNDOCARGS_5 lwi r10, r1, AC_STACK_SIZE + 24; + +# ifdef PIC +# define PSEUDO_JMP(sym) brlid r15, sym##@PLTPC; addk r0, r0, r0 +# else +# define PSEUDO_JMP(sym) brlid r15, sym; addk r0, r0, r0 +# endif + +# if defined IS_IN_libpthread +# define CENABLE PSEUDO_JMP (__pthread_enable_asynccancel) +# define CDISABLE PSEUDO_JMP (__pthread_disable_asynccancel) +# define __local_multiple_threads __pthread_multiple_threads +# elif !defined NOT_IN_libc +# define CENABLE PSEUDO_JMP (__libc_enable_asynccancel) +# define CDISABLE PSEUDO_JMP (__libc_disable_asynccancel) +# define __local_multiple_threads __libc_multiple_threads +# elif defined IS_IN_librt +# define CENABLE PSEUDO_JMP (__librt_enable_asynccancel) +# define CDISABLE PSEUDO_JMP (__librt_disable_asynccancel) +# else +# error Unsupported library +# endif + +#define SINGLE_THREAD_P(reg) \ + lwi reg, r0, MULTIPLE_THREADS_OFFSET(reg) + +#else /* !__ASSEMBLER__ */ +# define SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) + +#endif /* __ASSEMBLER__ */ + +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/vfork.S new file mode 100644 index 000000000..433671717 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/vfork.S @@ -0,0 +1,5 @@ +#define SAVE_PID +#define RESTORE_PID +#include <tls.h> +#include <tcb-offsets.h> +#include <libc/sysdeps/linux/microblaze/vfork.S> |