Add MIPS NPTL support
This commit is contained in:
Andreas Jaeger
parent
27aae96e5b
commit
e36da2da8f
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# Copyright (C) 2005 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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#
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, write to the Free
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# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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# 02111-1307 USA.
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ifeq ($(subdir),csu)
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gen-as-const-headers += tcb-offsets.sym
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endif
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ifeq ($(subdir),nptl)
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libpthread-sysdep_routines += nptl-sysdep
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endif
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@ -0,0 +1,30 @@
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/* Copyright (C) 2003, 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <setjmp.h>
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#include <stdint.h>
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#include <unwind.h>
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#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
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_JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
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#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
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((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[0].__sp - (_adj))
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/* We use the normal longjmp for unwinding. */
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#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
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@ -0,0 +1,2 @@
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/* Pull in __syscall_error. */
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#include <sysdep.S>
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@ -0,0 +1,37 @@
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/* Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sys/asm.h>
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#include <sysdep.h>
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#include <sgidefs.h>
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ENTRY (pthread_spin_lock)
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.set push
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#if _MIPS_SIM == _ABIO32
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.set mips2
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#endif
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1: ll a2, 0(a0)
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li a1, 1
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bnez a2, 1b
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sc a1, 0(a0)
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beqz a1, 1b
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MIPS_SYNC
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.set pop
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li v0, 0
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ret
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PSEUDO_END (pthread_spin_lock)
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@ -0,0 +1,41 @@
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/* Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sys/asm.h>
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#include <sysdep.h>
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#define _ERRNO_H 1
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#include <bits/errno.h>
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#include <sgidefs.h>
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ENTRY (pthread_spin_trylock)
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.set push
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#if _MIPS_SIM == _ABIO32
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.set mips2
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#endif
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ll a2, 0(a0)
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li a1, 1
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bnez a2, 1f
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sc a1, 0(a0)
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beqz a1, 1f
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MIPS_SYNC
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.set pop
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li v0, 0
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ret
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1: li v0, EBUSY
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ret
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PSEUDO_END (pthread_spin_trylock)
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@ -0,0 +1,39 @@
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/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* Default stack size. */
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#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
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/* Required stack pointer alignment at beginning. */
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#define STACK_ALIGN 16
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/* Minimal stack size after allocating thread descriptor and guard size. */
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#define MINIMAL_REST_STACK 2048
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/* Alignment requirement for TCB. */
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#define TCB_ALIGNMENT 16
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/* Location of current stack frame. */
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#define CURRENT_STACK_FRAME __builtin_frame_address (0)
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/* XXX Until we have a better place keep the definitions here. */
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#define __exit_thread_inline(val) \
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INLINE_SYSCALL (exit, 1, (val))
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#include <sysdep.h>
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#include <tls.h>
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--
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-- Abuse tls.h macros to derive offsets relative to the thread register.
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#define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
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MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
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PID_OFFSET thread_offsetof (pid)
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TID_OFFSET thread_offsetof (tid)
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@ -0,0 +1,161 @@
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/* Definition for thread-local data handling. NPTL/MIPS version.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _TLS_H
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#define _TLS_H 1
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#include <dl-sysdep.h>
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#ifndef __ASSEMBLER__
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# include <stdbool.h>
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# include <stddef.h>
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# include <stdint.h>
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/* Type for the dtv. */
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typedef union dtv
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{
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size_t counter;
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struct
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{
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void *val;
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bool is_static;
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} pointer;
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} dtv_t;
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/* Note: rd must be $v1 to be ABI-conformant. */
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# define READ_THREAD_POINTER() \
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({ void *__result; \
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asm volatile (".set\tpush\n\t.set\tmips32r2\n\t" \
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"rdhwr\t%0, $29\n\t.set\tpop" : "=v" (__result)); \
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__result; })
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#else /* __ASSEMBLER__ */
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# include <tcb-offsets.h>
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# define READ_THREAD_POINTER(rd) \
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.set push; \
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.set mips32r2; \
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rdhwr rd, $29; \
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.set pop
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#endif /* __ASSEMBLER__ */
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/* We require TLS support in the tools. */
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#ifndef HAVE_TLS_SUPPORT
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# error "TLS support is required."
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#endif
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/* Signal that TLS support is available. */
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#define USE_TLS 1
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#ifndef __ASSEMBLER__
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/* Get system call information. */
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# include <sysdep.h>
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/* The TP points to the start of the thread blocks. */
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# define TLS_DTV_AT_TP 1
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/* Get the thread descriptor definition. */
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# include <nptl/descr.h>
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typedef struct
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{
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dtv_t *dtv;
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void *private;
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} tcbhead_t;
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/* This is the size of the initial TCB. Because our TCB is before the thread
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pointer, we don't need this. */
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# define TLS_INIT_TCB_SIZE 0
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/* Alignment requirements for the initial TCB. */
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# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread)
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/* This is the size of the TCB. Because our TCB is before the thread
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pointer, we don't need this. */
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# define TLS_TCB_SIZE 0
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/* Alignment requirements for the TCB. */
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# define TLS_TCB_ALIGN __alignof__ (struct pthread)
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/* This is the size we need before TCB - actually, it includes the TCB. */
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# define TLS_PRE_TCB_SIZE \
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(sizeof (struct pthread) \
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+ ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1)))
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/* The thread pointer (in hardware register $29) points to the end of
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the TCB + 0x7000, as for PowerPC. The pthread_descr structure is
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immediately in front of the TCB. */
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# define TLS_TCB_OFFSET 0x7000
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/* Install the dtv pointer. The pointer passed is to the element with
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index -1 which contain the length. */
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# define INSTALL_DTV(tcbp, dtvp) \
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(((tcbhead_t *) (tcbp))[-1].dtv = (dtvp) + 1)
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/* Install new dtv for current thread. */
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# define INSTALL_NEW_DTV(dtv) \
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(THREAD_DTV() = (dtv))
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/* Return dtv of given thread descriptor. */
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# define GET_DTV(tcbp) \
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(((tcbhead_t *) (tcbp))[-1].dtv)
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/* Code to initially initialize the thread pointer. This might need
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special attention since 'errno' is not yet available and if the
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operation can cause a failure 'errno' must not be touched. */
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# define TLS_INIT_TP(tcbp, secondcall) \
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({ INTERNAL_SYSCALL_DECL (err); \
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long result_var; \
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result_var = INTERNAL_SYSCALL (set_thread_area, err, 1, \
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(char *) (tcbp) + TLS_TCB_OFFSET); \
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INTERNAL_SYSCALL_ERROR_P (result_var, err) \
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? "unknown error" : NULL; })
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/* Return the address of the dtv for the current thread. */
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# define THREAD_DTV() \
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(((tcbhead_t *) (READ_THREAD_POINTER () - TLS_TCB_OFFSET))[-1].dtv)
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/* Return the thread descriptor for the current thread. */
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# define THREAD_SELF \
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((struct pthread *) (READ_THREAD_POINTER () \
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- TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE))
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/* Magic for libthread_db to know how to do THREAD_SELF. */
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# define DB_THREAD_SELF \
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CONST_THREAD_AREA (32, TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE)
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/* Access to data in the thread descriptor is easy. */
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# define THREAD_GETMEM(descr, member) \
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descr->member
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# define THREAD_GETMEM_NC(descr, member, idx) \
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descr->member[idx]
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# define THREAD_SETMEM(descr, member, value) \
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descr->member = (value)
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# define THREAD_SETMEM_NC(descr, member, idx, value) \
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descr->member[idx] = (value)
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/* l_tls_offset == 0 is perfectly valid on MIPS, so we have to use some
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different value to mean unset l_tls_offset. */
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# define NO_TLS_OFFSET -1
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#endif /* __ASSEMBLER__ */
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#endif /* tls.h */
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