mirror of
https://sourceware.org/git/glibc.git
synced 2025-08-01 10:06:57 +03:00
Update.
2003-02-17 Kevin B. Hendricks <kevin.hendricks@sympatico.ca> Franz Sirl <Franz.Sirl-kernel@lauterbach.com> * sysdeps/powerpc/elf/libc-start.c: Handle NONTLS_INIT_TP. * sysdeps/powerpc/powerpc32/__longjmp.S: Remove R2 handling. * sysdeps/powerpc/powerpc32/setjmp.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/__longjmp.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/setjmp.S: Likewise.
This commit is contained in:
Ulrich Drepper
@ -1,3 +1,21 @@
|
||||
2003-02-17 Kevin B. Hendricks <kevin.hendricks@sympatico.ca>
|
||||
Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
|
||||
|
||||
* sysdeps/powerpc/Makefile: Handle tcb-offsets.sym.
|
||||
* sysdeps/powerpc/tcb-offsets.sym: New file.
|
||||
* sysdeps/powerpc/tls.h: New file.
|
||||
* sysdeps/powerpc/powerpc32/pt-machine.h (FLOATING_STACKS): Define.
|
||||
(ARCH_STACK_MAX_SIZE): Define.
|
||||
(THREAD_SELF): Define.
|
||||
(INIT_THREAD_SELF): Define.
|
||||
(THREAD_GETMEM): Define.
|
||||
(THREAD_GETMEM_NC): Define.
|
||||
(THREAD_SETMEM): Define.
|
||||
(THREAD_SETMEM_NC): Define.
|
||||
(__thread_self): Declare.
|
||||
* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h: Adjust
|
||||
for thread register.
|
||||
|
||||
2003-02-14 Steven Munroe <sjmunroe@us.ibm.com>
|
||||
|
||||
* sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S (__vfork):
|
||||
|
||||
@ -2,3 +2,6 @@ ifeq ($(subdir):$(elf),linuxthreads:yes)
|
||||
# See CFLAGS-initfini.s above; this is the same code.
|
||||
CFLAGS-pt-initfini.s = -g0 -fpic -O1
|
||||
endif
|
||||
ifeq ($(subdir),csu)
|
||||
gen-as-const-headers += tcb-offsets.sym
|
||||
endif
|
||||
|
||||
@ -36,11 +36,37 @@ extern int __compare_and_swap (long int *p, long int oldval, long int newval);
|
||||
need to make sure that the compiler has flushed everything to memory. */
|
||||
#define MEMORY_BARRIER() __asm__ __volatile__ ("sync" : : : "memory")
|
||||
|
||||
/* 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 8*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__ ("r1");
|
||||
|
||||
/* Register r2 (tp) is reserved by the ABI as "thread pointer". */
|
||||
struct _pthread_descr_struct;
|
||||
register struct _pthread_descr_struct *__thread_self __asm__("r2");
|
||||
|
||||
/* Return the thread descriptor for the current thread. */
|
||||
#define THREAD_SELF __thread_self
|
||||
|
||||
/* Initialize the thread-unique value. */
|
||||
#define INIT_THREAD_SELF(descr, nr) (__thread_self = (descr))
|
||||
|
||||
/* Access to data in the thread descriptor is easy. */
|
||||
#define THREAD_GETMEM(descr, member) \
|
||||
((void) (descr), THREAD_SELF->member)
|
||||
#define THREAD_GETMEM_NC(descr, member) \
|
||||
((void) (descr), THREAD_SELF->member)
|
||||
#define THREAD_SETMEM(descr, member, value) \
|
||||
((void) (descr), THREAD_SELF->member = (value))
|
||||
#define THREAD_SETMEM_NC(descr, member, value) \
|
||||
((void) (descr), THREAD_SELF->member = (value))
|
||||
|
||||
/* Compare-and-swap for semaphores. */
|
||||
/* note that test-and-set(x) is the same as !compare-and-swap(x, 0, 1) */
|
||||
|
||||
|
||||
4
linuxthreads/sysdeps/powerpc/tcb-offsets.sym
Normal file
4
linuxthreads/sysdeps/powerpc/tcb-offsets.sym
Normal file
@ -0,0 +1,4 @@
|
||||
#include <sysdep.h>
|
||||
#include <tls.h>
|
||||
|
||||
MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads)
|
||||
63
linuxthreads/sysdeps/powerpc/tls.h
Normal file
63
linuxthreads/sysdeps/powerpc/tls.h
Normal file
@ -0,0 +1,63 @@
|
||||
/* Definitions for thread-local data handling. linuxthreads/PPC version.
|
||||
Copyright (C) 2003 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 /* __ASSEMBLER__ */
|
||||
|
||||
#undef USE_TLS
|
||||
|
||||
#if USE_TLS
|
||||
|
||||
#else
|
||||
|
||||
#define NONTLS_INIT_TP \
|
||||
do { \
|
||||
static const tcbhead_t nontls_init_tp \
|
||||
= { .multiple_threads = 0 }; \
|
||||
__thread_self = (__typeof (__thread_self)) &nontls_init_tp; \
|
||||
} while (0)
|
||||
|
||||
#endif /* USE_TLS */
|
||||
|
||||
#endif /* tls.h */
|
||||
@ -18,6 +18,7 @@
|
||||
02111-1307 USA. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <tls.h>
|
||||
#ifndef __ASSEMBLER__
|
||||
# include <linuxthreads/internals.h>
|
||||
#endif
|
||||
@ -77,32 +78,19 @@
|
||||
# ifdef IS_IN_libpthread
|
||||
# define CENABLE bl JUMPTARGET(__pthread_enable_asynccancel)
|
||||
# define CDISABLE bl JUMPTARGET(__pthread_disable_asynccancel)
|
||||
# define __local_multiple_threads __pthread_multiple_threads
|
||||
# else
|
||||
# define CENABLE bl JUMPTARGET(__libc_enable_asynccancel)
|
||||
# define CDISABLE bl JUMPTARGET(__libc_disable_asynccancel)
|
||||
# define __local_multiple_threads __libc_multiple_threads
|
||||
# endif
|
||||
|
||||
# ifndef __ASSEMBLER__
|
||||
extern int __local_multiple_threads attribute_hidden;
|
||||
# define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
|
||||
# define SINGLE_THREAD_P \
|
||||
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
|
||||
p_header.data.multiple_threads) == 0, 1)
|
||||
# else
|
||||
# if !defined PIC
|
||||
# define SINGLE_THREAD_P \
|
||||
lis 10,__local_multiple_threads@ha; \
|
||||
lwz 10,__local_multiple_threads@l(10); \
|
||||
# define SINGLE_THREAD_P \
|
||||
lwz 10,MULTIPLE_THREADS_OFFSET(2); \
|
||||
cmpwi 10,0
|
||||
# else
|
||||
# define SINGLE_THREAD_P \
|
||||
mflr 9; \
|
||||
bl _GLOBAL_OFFSET_TABLE_@local-4; \
|
||||
mflr 10; \
|
||||
mtlr 9; \
|
||||
lwz 10,__local_multiple_threads@got(10); \
|
||||
lwz 10,0(10); \
|
||||
cmpwi 10,0
|
||||
# endif
|
||||
# endif
|
||||
|
||||
#elif !defined __ASSEMBLER__
|
||||
|
||||
Reference in New Issue
Block a user