diff options
Diffstat (limited to 'linuxthreads/sysdeps/x86_64')
| -rw-r--r-- | linuxthreads/sysdeps/x86_64/Makefile | 3 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/x86_64/Versions | 5 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/x86_64/pspinlock.c | 97 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/x86_64/pt-machine.h | 225 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/x86_64/tcb-offsets.sym | 4 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/x86_64/tls.h | 129 |
6 files changed, 0 insertions, 463 deletions
diff --git a/linuxthreads/sysdeps/x86_64/Makefile b/linuxthreads/sysdeps/x86_64/Makefile deleted file mode 100644 index 81bddf688c..0000000000 --- a/linuxthreads/sysdeps/x86_64/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -ifeq ($(subdir),csu) -gen-as-const-headers += tcb-offsets.sym -endif diff --git a/linuxthreads/sysdeps/x86_64/Versions b/linuxthreads/sysdeps/x86_64/Versions deleted file mode 100644 index 32da57080d..0000000000 --- a/linuxthreads/sysdeps/x86_64/Versions +++ /dev/null @@ -1,5 +0,0 @@ -libpthread { - GLIBC_PRIVATE { - __pthread_clock_gettime; __pthread_clock_settime; - } -} diff --git a/linuxthreads/sysdeps/x86_64/pspinlock.c b/linuxthreads/sysdeps/x86_64/pspinlock.c deleted file mode 100644 index e1b2a66841..0000000000 --- a/linuxthreads/sysdeps/x86_64/pspinlock.c +++ /dev/null @@ -1,97 +0,0 @@ -/* POSIX spinlock implementation. x86-64 version. - Copyright (C) 2001 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <errno.h> -#include <pthread.h> -#include "internals.h" - -/* This implementation is similar to the one used in the Linux kernel. - But the kernel is byte instructions for the memory access. This is - faster but unusable here. The problem is that only 128 - threads/processes could use the spinlock at the same time. If (by - a design error in the program) a thread/process would hold the - spinlock for a time long enough to accumulate 128 waiting - processes, the next one will find a positive value in the spinlock - and assume it is unlocked. We cannot accept that. */ - -int -__pthread_spin_lock (pthread_spinlock_t *lock) -{ - asm volatile - ("\n" - "1:\n\t" - "lock; decl %0\n\t" - "js 2f\n\t" - ".section .text.spinlock,\"ax\"\n" - "2:\n\t" - "cmpl $0,%0\n\t" - "rep; nop\n\t" - "jle 2b\n\t" - "jmp 1b\n\t" - ".previous" - : "=m" (*lock)); - return 0; -} -weak_alias (__pthread_spin_lock, pthread_spin_lock) - - -int -__pthread_spin_trylock (pthread_spinlock_t *lock) -{ - int oldval; - - asm volatile - ("xchgl %0,%1" - : "=r" (oldval), "=m" (*lock) - : "0" (0)); - return oldval > 0 ? 0 : EBUSY; -} -weak_alias (__pthread_spin_trylock, pthread_spin_trylock) - - -int -__pthread_spin_unlock (pthread_spinlock_t *lock) -{ - asm volatile - ("movl $1,%0" - : "=m" (*lock)); - return 0; -} -weak_alias (__pthread_spin_unlock, pthread_spin_unlock) - - -int -__pthread_spin_init (pthread_spinlock_t *lock, int pshared) -{ - /* We can ignore the `pshared' parameter. Since we are busy-waiting - all processes which can access the memory location `lock' points - to can use the spinlock. */ - *lock = 1; - return 0; -} -weak_alias (__pthread_spin_init, pthread_spin_init) - - -int -__pthread_spin_destroy (pthread_spinlock_t *lock) -{ - /* Nothing to do. */ - return 0; -} -weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/linuxthreads/sysdeps/x86_64/pt-machine.h b/linuxthreads/sysdeps/x86_64/pt-machine.h deleted file mode 100644 index df187a7c03..0000000000 --- a/linuxthreads/sysdeps/x86_64/pt-machine.h +++ /dev/null @@ -1,225 +0,0 @@ -/* Machine-dependent pthreads configuration and inline functions. - x86-64 version. - Copyright (C) 2001, 2002, 2003, 2004 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#ifndef _PT_MACHINE_H -#define _PT_MACHINE_H 1 - -#ifndef __ASSEMBLER__ -# include <stddef.h> /* For offsetof. */ -# include <stdlib.h> /* For abort(). */ -# include <asm/prctl.h> - - -# ifndef PT_EI -# define PT_EI extern inline __attribute__ ((always_inline)) -# endif - -extern long int testandset (int *spinlock); -extern int __compare_and_swap (long int *p, long int oldval, long int newval); - -/* Get some notion of the current stack. Need not be exactly the top - of the stack, just something somewhere in the current frame. */ -# define CURRENT_STACK_FRAME stack_pointer -register char * stack_pointer __asm__ ("%rsp") __attribute_used__; - - -/* Spinlock implementation; required. */ -PT_EI long int -testandset (int *spinlock) -{ - long int ret; - - __asm__ __volatile__ ( - "xchgl %k0, %1" - : "=r"(ret), "=m"(*spinlock) - : "0"(1), "m"(*spinlock) - : "memory"); - - return ret; -} - - -/* Compare-and-swap for semaphores. */ -# define HAS_COMPARE_AND_SWAP - -PT_EI int -__compare_and_swap (long int *p, long int oldval, long int newval) -{ - char ret; - long int readval; - - __asm__ __volatile__ ("lock; cmpxchgq %3, %1; sete %0" - : "=q" (ret), "=m" (*p), "=a" (readval) - : "r" (newval), "m" (*p), "a" (oldval) - : "memory"); - return ret; -} - -/* Return the thread descriptor for the current thread. - - The contained asm must *not* be marked volatile since otherwise - assignments like - pthread_descr self = thread_self(); - do not get optimized away. */ -# define THREAD_SELF \ -({ \ - register pthread_descr __self; \ - __asm__ ("movq %%fs:%c1,%0" : "=r" (__self) \ - : "i" (offsetof (struct _pthread_descr_struct, \ - p_header.data.self))); \ - __self; \ -}) - -/* Prototype for the system call. */ -extern int __arch_prctl (int __code, unsigned long __addr); - -/* Initialize the thread-unique value. */ -# define INIT_THREAD_SELF(descr, nr) \ -{ \ - if (__arch_prctl (ARCH_SET_FS, (unsigned long)descr) != 0) \ - abort (); \ -} - -/* Read member of the thread descriptor directly. */ -# define THREAD_GETMEM(descr, member) \ -({ \ - __typeof__ (descr->member) __value; \ - if (sizeof (__value) == 1) \ - __asm__ __volatile__ ("movb %%fs:%P2,%b0" \ - : "=q" (__value) \ - : "0" (0), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else if (sizeof (__value) == 4) \ - __asm__ __volatile__ ("movl %%fs:%P2,%k0" \ - : "=r" (__value) \ - : "0" (0), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else \ - { \ - if (sizeof (__value) != 8) \ - /* There should not be any value with a size other than 1, 4 or 8. */\ - abort (); \ - \ - __asm__ __volatile__ ("movq %%fs:%P1,%0" \ - : "=r" (__value) \ - : "i" (offsetof (struct _pthread_descr_struct, \ - member))); \ - } \ - __value; \ -}) - -/* Same as THREAD_GETMEM, but the member offset can be non-constant. */ -# define THREAD_GETMEM_NC(descr, member) \ -({ \ - __typeof__ (descr->member) __value; \ - if (sizeof (__value) == 1) \ - __asm__ __volatile__ ("movb %%fs:(%2),%b0" \ - : "=q" (__value) \ - : "0" (0), \ - "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else if (sizeof (__value) == 4) \ - __asm__ __volatile__ ("movl %%fs:(%2),%k0" \ - : "=r" (__value) \ - : "0" (0), \ - "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else \ - { \ - if (sizeof (__value) != 8) \ - /* There should not be any value with a size other than 1, 4 or 8. */\ - abort (); \ - \ - __asm__ __volatile__ ("movq %%fs:(%1),%0" \ - : "=r" (__value) \ - : "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - } \ - __value; \ -}) - -/* Set member of the thread descriptor directly. */ -# define THREAD_SETMEM(descr, member, value) \ -({ \ - __typeof__ (descr->member) __value = (value); \ - if (sizeof (__value) == 1) \ - __asm__ __volatile__ ("movb %0,%%fs:%P1" : \ - : "q" (__value), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else if (sizeof (__value) == 4) \ - __asm__ __volatile__ ("movl %k0,%%fs:%P1" : \ - : "r" (__value), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else \ - { \ - if (sizeof (__value) != 8) \ - /* There should not be any value with a size other than 1, 4 or 8. */\ - abort (); \ - \ - __asm__ __volatile__ ("movq %0,%%fs:%P1" : \ - : "r" (__value), \ - "i" (offsetof (struct _pthread_descr_struct, \ - member))); \ - } \ -}) - -/* Same as THREAD_SETMEM, but the member offset can be non-constant. */ -# define THREAD_SETMEM_NC(descr, member, value) \ -({ \ - __typeof__ (descr->member) __value = (value); \ - if (sizeof (__value) == 1) \ - __asm__ __volatile__ ("movb %0,%%fs:(%1)" : \ - : "q" (__value), \ - "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else if (sizeof (__value) == 4) \ - __asm__ __volatile__ ("movl %k0,%%fs:(%1)" : \ - : "r" (__value), \ - "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - else \ - { \ - if (sizeof (__value) != 8) \ - /* There should not be any value with a size other than 1, 4 or 8. */\ - abort (); \ - \ - __asm__ __volatile__ ("movq %0,%%fs:(%1)" : \ - : "r" (__value), \ - "r" (offsetof (struct _pthread_descr_struct, \ - member))); \ - } \ -}) - -#endif /* !__ASSEMBLER__ */ - -/* We want the OS to assign stack addresses. */ -#define FLOATING_STACKS 1 - -/* Maximum size of the stack if the rlimit is unlimited. */ -#define ARCH_STACK_MAX_SIZE 32*1024*1024 - -/* The ia32e really want some help to prevent overheating. */ -#define BUSY_WAIT_NOP __asm__ ("rep; nop") - -#endif /* pt-machine.h */ diff --git a/linuxthreads/sysdeps/x86_64/tcb-offsets.sym b/linuxthreads/sysdeps/x86_64/tcb-offsets.sym deleted file mode 100644 index aee6be2570..0000000000 --- a/linuxthreads/sysdeps/x86_64/tcb-offsets.sym +++ /dev/null @@ -1,4 +0,0 @@ -#include <sysdep.h> -#include <tls.h> - -MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads) diff --git a/linuxthreads/sysdeps/x86_64/tls.h b/linuxthreads/sysdeps/x86_64/tls.h deleted file mode 100644 index 63feebdb2c..0000000000 --- a/linuxthreads/sysdeps/x86_64/tls.h +++ /dev/null @@ -1,129 +0,0 @@ -/* Definitions for thread-local data handling. linuxthreads/x86-64 version. - Copyright (C) 2002 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#ifndef _TLS_H -#define _TLS_H - -#ifndef __ASSEMBLER__ - -# include <pt-machine.h> -# include <stddef.h> - -/* Type for the dtv. */ -typedef union dtv -{ - size_t counter; - void *pointer; -} dtv_t; - - -typedef struct -{ - void *tcb; /* Pointer to the TCB. Not necessary the - thread descriptor used by libpthread. */ - dtv_t *dtv; - void *self; /* Pointer to the thread descriptor. */ - int multiple_threads; -} tcbhead_t; - -#else /* __ASSEMBLER__ */ -# include <tcb-offsets.h> -#endif - - -#ifdef HAVE_TLS_SUPPORT - -/* Signal that TLS support is available. */ -# define USE_TLS 1 - -# ifndef __ASSEMBLER__ -/* Get system call information. */ -# include <sysdep.h> - -/* Get the thread descriptor definition. */ -# include <linuxthreads/descr.h> - -/* 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 __alignof__ (tcbhead_t) - -/* This is the size of the TCB. */ -# define TLS_TCB_SIZE sizeof (struct _pthread_descr_struct) - -/* Alignment requirements for the TCB. */ -# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct) - -/* The TCB can have any size and the memory following the address the - thread pointer points to is unspecified. Allocate the TCB there. */ -# define TLS_TCB_AT_TP 1 - - -/* Install the dtv pointer. The pointer passed is to the element with - index -1 which contain the length. */ -# define INSTALL_DTV(descr, dtvp) \ - ((tcbhead_t *) (descr))->dtv = (dtvp) + 1 - -/* Install new dtv for current thread. */ -# define INSTALL_NEW_DTV(dtv) \ - ({ struct _pthread_descr_struct *__descr; \ - THREAD_SETMEM (__descr, p_header.data.dtvp, (dtv)); }) - -/* Return dtv of given thread descriptor. */ -# define GET_DTV(descr) \ - (((tcbhead_t *) (descr))->dtv) - -/* Code to initially initialize the thread pointer. This might need - special attention since 'errno' is not yet available and if the - operation can cause a failure 'errno' must not be touched. */ -# define TLS_INIT_TP(descr, secondcall) \ - ({ \ - void *_descr = (descr); \ - tcbhead_t *head = _descr; \ - long int _result; \ - \ - head->tcb = _descr; \ - /* For now the thread descriptor is at the same address. */ \ - head->self = _descr; \ - \ - asm volatile ("syscall" \ - : "=a" (_result) \ - : "0" ((unsigned long int) __NR_arch_prctl), \ - "D" ((unsigned long int) ARCH_SET_FS), \ - "S" (_descr) \ - : "memory", "cc", "r11", "cx"); \ - \ - _result ? "cannot set %fs base address for thread-local storage" : 0; \ - }) - -/* Indicate that dynamic linker shouldn't try to initialize TLS even - when no PT_TLS segments are found in the program and libraries - it is linked against. */ -# define TLS_INIT_TP_EXPENSIVE 1 - -/* Return the address of the dtv for the current thread. */ -# define THREAD_DTV() \ - ({ struct _pthread_descr_struct *__descr; \ - THREAD_GETMEM (__descr, p_header.data.dtvp); }) - -# endif /* HAVE_TLS_SUPPORT */ -#endif /* __ASSEMBLER__ */ - -#endif /* tls.h */ |