diff options
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/sh')
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/sh/CVS/Entries | 6 | ||||
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/sh/CVS/Repository | 1 | ||||
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/sh/CVS/Root | 1 | ||||
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/sh/pspinlock.c | 80 | ||||
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/sh/pt-machine.h | 81 | ||||
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/sh/tcb-offsets.sym | 10 | ||||
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/sh/tls.h | 159 |
7 files changed, 338 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/sh/CVS/Entries b/libpthread/linuxthreads/sysdeps/sh/CVS/Entries new file mode 100644 index 000000000..42781a626 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sh/CVS/Entries @@ -0,0 +1,6 @@ +/Makefile/1.1/Tue Nov 15 14:20:47 2005// +/pspinlock.c/1.4/Tue Nov 15 14:20:47 2005// +/pt-machine.h/1.14/Tue Nov 15 14:20:47 2005// +/tcb-offsets.sym/1.4/Tue Nov 15 14:20:47 2005// +/tls.h/1.11/Wed Nov 16 20:07:56 2005// +D diff --git a/libpthread/linuxthreads/sysdeps/sh/CVS/Repository b/libpthread/linuxthreads/sysdeps/sh/CVS/Repository new file mode 100644 index 000000000..37f96b985 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sh/CVS/Repository @@ -0,0 +1 @@ +ports/linuxthreads/sysdeps/sh diff --git a/libpthread/linuxthreads/sysdeps/sh/CVS/Root b/libpthread/linuxthreads/sysdeps/sh/CVS/Root new file mode 100644 index 000000000..ca45c5d4d --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sh/CVS/Root @@ -0,0 +1 @@ +:pserver:anoncvs@sources.redhat.com:/cvs/glibc diff --git a/libpthread/linuxthreads/sysdeps/sh/pspinlock.c b/libpthread/linuxthreads/sysdeps/sh/pspinlock.c new file mode 100644 index 000000000..2dec849d3 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sh/pspinlock.c @@ -0,0 +1,80 @@ +/* POSIX spinlock implementation. SH version. + Copyright (C) 2000, 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; see the file COPYING.LIB. 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" + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + unsigned int val; + + do + asm volatile ("tas.b @%1; movt %0" + : "=r" (val) + : "r" (lock) + : "memory"); + while (val == 0); + + return 0; +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + unsigned int val; + + asm volatile ("tas.b @%1; movt %0" + : "=r" (val) + : "r" (lock) + : "memory"); + return val ? 0 : EBUSY; +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + return *lock = 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. */ + return *lock = 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/libpthread/linuxthreads/sysdeps/sh/pt-machine.h b/libpthread/linuxthreads/sysdeps/sh/pt-machine.h new file mode 100644 index 000000000..02545e6b4 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sh/pt-machine.h @@ -0,0 +1,81 @@ +/* Machine-dependent pthreads configuration and inline functions. + SuperH version. + Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Niibe Yutaka <gniibe@m17n.org>. + + 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, + 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__ +#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); + +/* Spinlock implementation; required. */ +PT_EI long int +testandset (int *spinlock) +{ + int ret; + + __asm__ __volatile__( + "tas.b @%1\n\t" + "movt %0" + : "=r" (ret) + : "r" (spinlock) + : "memory", "cc"); + + return (ret == 0); +} + +/* 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 + +/* 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__ ("r15"); + +/* Return the thread descriptor for the current thread. */ +struct _pthread_descr_struct; +#define THREAD_SELF \ + ({ struct _pthread_descr_struct *self; \ + __asm__("stc gbr,%0" : "=r" (self)); self;}) + +/* Initialize the thread-unique value. */ +#define INIT_THREAD_SELF(descr, nr) \ + ({ __asm__ __volatile__("ldc %0,gbr" : : "r" (descr));}) + +/* Access to data in the thread descriptor is easy. */ +#define THREAD_GETMEM(descr, member) \ + ((void) sizeof (descr), THREAD_SELF->member) +#define THREAD_GETMEM_NC(descr, member) \ + ((void) sizeof (descr), THREAD_SELF->member) +#define THREAD_SETMEM(descr, member, value) \ + ((void) sizeof (descr), THREAD_SELF->member = (value)) +#define THREAD_SETMEM_NC(descr, member, value) \ + ((void) sizeof (descr), THREAD_SELF->member = (value)) +#endif /* __ASSEMBLER__ */ + +#endif /* pt-machine.h */ diff --git a/libpthread/linuxthreads/sysdeps/sh/tcb-offsets.sym b/libpthread/linuxthreads/sysdeps/sh/tcb-offsets.sym new file mode 100644 index 000000000..328eb0573 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sh/tcb-offsets.sym @@ -0,0 +1,10 @@ +#include <sysdep.h> +#include <tls.h> + +-- +#ifdef USE_TLS +MULTIPLE_THREADS_OFFSET offsetof (struct _pthread_descr_struct, p_multiple_threads) +TLS_PRE_TCB_SIZE sizeof (struct _pthread_descr_struct) +#else +MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads) +#endif diff --git a/libpthread/linuxthreads/sysdeps/sh/tls.h b/libpthread/linuxthreads/sysdeps/sh/tls.h new file mode 100644 index 000000000..027be4bf4 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sh/tls.h @@ -0,0 +1,159 @@ +/* Definition for thread-local data handling. linuxthreads/SH version. + Copyright (C) 2002, 2003, 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _TLS_H +#define _TLS_H + +# include <pt-machine.h> + +#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 can support TLS only if the floating-stack support is available. */ +#if defined HAVE_TLS_SUPPORT \ + && (defined FLOATING_STACKS || !defined IS_IN_libpthread) + +/* Signal that TLS support is available. */ +# define USE_TLS 1 + +/* Include padding in _pthread_descr_struct so that libc can find p_errno, + if libpthread will only include the padding because of the !IS_IN_libpthread + check. */ +#ifndef FLOATING_STACKS +# define INCLUDE_TLS_PADDING 1 +#endif + +# ifndef __ASSEMBLER__ + +typedef struct +{ + dtv_t *dtv; + void *private; +} tcbhead_t; + +/* 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 (tcbhead_t) + +/* This is the size we need before TCB. */ +# define TLS_PRE_TCB_SIZE sizeof (struct _pthread_descr_struct) + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct) + +/* The TLS blocks start right after the TCB. */ +# define TLS_DTV_AT_TP 1 + +/* 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) \ + ({ tcbhead_t *__tcbp; \ + __asm __volatile ("stc gbr,%0" : "=r" (__tcbp)); \ + __tcbp->dtv = (dtv);}) + +/* Return dtv of given thread descriptor. */ +# define GET_DTV(tcbp) \ + (((tcbhead_t *) (tcbp))->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(tcbp, secondcall) \ + ({ __asm __volatile ("ldc %0,gbr" : : "r" (tcbp)); 0; }) + +/* Return the address of the dtv for the current thread. */ +# define THREAD_DTV() \ + ({ tcbhead_t *__tcbp; \ + __asm __volatile ("stc gbr,%0" : "=r" (__tcbp)); \ + __tcbp->dtv;}) + +/* Return the thread descriptor for the current thread. */ +# undef THREAD_SELF +# define THREAD_SELF \ + ({ struct _pthread_descr_struct *__self; \ + __asm ("stc gbr,%0" : "=r" (__self)); \ + __self - 1;}) + +# undef INIT_THREAD_SELF +# define INIT_THREAD_SELF(descr, nr) \ + ({ struct _pthread_descr_struct *__self = (void *) descr; \ + __asm __volatile ("ldc %0,gbr" : : "r" (__self + 1)); \ + 0; }) + +# define TLS_MULTIPLE_THREADS_IN_TCB 1 + +/* Get the thread descriptor definition. This must be after the + the definition of THREAD_SELF for TLS. */ +# include <linuxthreads/descr.h> + +# endif /* __ASSEMBLER__ */ + +#else + +# ifndef __ASSEMBLER__ + +typedef struct +{ + void *tcb; + dtv_t *dtv; + void *self; + int multiple_threads; +} tcbhead_t; + +/* Get the thread descriptor definition. */ +# include <linuxthreads/descr.h> + +# define NONTLS_INIT_TP \ + do { \ + static const tcbhead_t nontls_init_tp = { .multiple_threads = 0 }; \ + __asm __volatile ("ldc %0,gbr" : : "r" (&nontls_init_tp)); \ + } while (0) + +# endif /* __ASSEMBLER__ */ + +#endif /* HAVE_TLS_SUPPORT && (FLOATING_STACKS || !IS_IN_libpthread) */ + +#endif /* tls.h */ |