mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-22 19:00:07 +00:00
2002-09-10 Alan Modra <amodra@bigpond.net.au>
* csu/gmon-start.c [!TEXT_START]: Define TEXT_START if not already defined in entry.h. (__gmon_start__) [!ENTRY_POINT_DECL]: Use TEXT_START macro to obtain lowest address for profiling in __monstartup call. * sysdeps/powerpc/powerpc64/elf/entry.h: New file.
This commit is contained in:
Roland McGrath
parent
4b172769b2
commit
65233b5850
@ -1,3 +1,11 @@
|
||||
2002-09-10 Alan Modra <amodra@bigpond.net.au>
|
||||
|
||||
* csu/gmon-start.c [!TEXT_START]: Define TEXT_START if not already
|
||||
defined in entry.h.
|
||||
(__gmon_start__) [!ENTRY_POINT_DECL]: Use TEXT_START macro to obtain
|
||||
lowest address for profiling in __monstartup call.
|
||||
* sysdeps/powerpc/powerpc64/elf/entry.h: New file.
|
||||
|
||||
2002-09-14 Roland McGrath <roland@redhat.com>
|
||||
|
||||
* sysdeps/unix/sysv/linux/pread.c: __NR_pread64 may be defined
|
||||
|
||||
@ -35,6 +35,14 @@ extern void ENTRY_POINT;
|
||||
#endif
|
||||
extern void etext;
|
||||
|
||||
#ifndef TEXT_START
|
||||
#ifdef ENTRY_POINT_DECL
|
||||
#define TEXT_START ENTRY_POINT
|
||||
#else
|
||||
#define TEXT_START &ENTRY_POINT
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifndef HAVE_INITFINI
|
||||
/* This function gets called at startup by the normal constructor
|
||||
mechanism. We link this file together with start.o to produce gcrt1.o,
|
||||
@ -66,7 +74,7 @@ __gmon_start__ (void)
|
||||
#ifdef ENTRY_POINT_DECL
|
||||
__monstartup ((u_long) ENTRY_POINT, (u_long) &etext);
|
||||
#else
|
||||
__monstartup ((u_long) &ENTRY_POINT, (u_long) &etext);
|
||||
__monstartup ((u_long) TEXT_START, (u_long) &etext);
|
||||
#endif
|
||||
|
||||
/* Call _mcleanup before exiting; it will write out gmon.out from the
|
||||
|
||||
129
linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h
Normal file
129
linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h
Normal file
@ -0,0 +1,129 @@
|
||||
/* Machine-dependent pthreads configuration and inline functions.
|
||||
powerpc 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 Library General Public License as
|
||||
published by the Free Software Foundation; either version 2 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
|
||||
Library General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Library 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. */
|
||||
|
||||
/* These routines are from Appendix G of the 'PowerPC 601 RISC Microprocessor
|
||||
User's Manual', by IBM and Motorola. */
|
||||
|
||||
#ifndef _PT_MACHINE_H
|
||||
#define _PT_MACHINE_H 1
|
||||
|
||||
#ifndef PT_EI
|
||||
# define PT_EI extern inline
|
||||
#endif
|
||||
|
||||
extern long int testandset (int *spinlock);
|
||||
extern int __compare_and_swap (long int *p, long int oldval, long int newval);
|
||||
|
||||
/* For multiprocessor systems, we want to ensure all memory accesses
|
||||
are completed before we reset a lock. On other systems, we still
|
||||
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 16*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 r13 (tp) is reserved by the ABI as "thread pointer". */
|
||||
struct _pthread_descr_struct;
|
||||
register struct _pthread_descr_struct *__thread_self __asm__("r13");
|
||||
|
||||
/* 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))
|
||||
|
||||
/* Compare-and-swap for semaphores. */
|
||||
/* note that test-and-set(x) is the same as !compare-and-swap(x, 0, 1) */
|
||||
|
||||
#define HAS_COMPARE_AND_SWAP
|
||||
#define HAS_COMPARE_AND_SWAP_WITH_RELEASE_SEMANTICS
|
||||
|
||||
PT_EI int
|
||||
__compare_and_swap (long int *p, long int oldval, long int newval)
|
||||
{
|
||||
long int ret;
|
||||
|
||||
__asm__ __volatile__ (
|
||||
"0: ldarx %0,0,%1 ;"
|
||||
" xor. %0,%3,%0;"
|
||||
" bne 1f;"
|
||||
" stdcx. %2,0,%1;"
|
||||
" bne- 0b;"
|
||||
"1: "
|
||||
: "=&r"(ret)
|
||||
: "r"(p), "r"(newval), "r"(oldval)
|
||||
: "cr0", "memory");
|
||||
/* This version of __compare_and_swap is to be used when acquiring
|
||||
a lock, so we don't need to worry about whether other memory
|
||||
operations have completed, but we do need to be sure that any loads
|
||||
after this point really occur after we have acquired the lock. */
|
||||
__asm__ __volatile__ ("isync" : : : "memory");
|
||||
return (int)(ret == 0);
|
||||
}
|
||||
|
||||
PT_EI int
|
||||
__compare_and_swap_with_release_semantics (long int *p,
|
||||
long int oldval, long int newval)
|
||||
{
|
||||
long int ret;
|
||||
|
||||
MEMORY_BARRIER ();
|
||||
__asm__ __volatile__ (
|
||||
"0: ldarx %0,0,%1 ;"
|
||||
" xor. %0,%3,%0;"
|
||||
" bne 1f;"
|
||||
" stdcx. %2,0,%1;"
|
||||
" bne- 0b;"
|
||||
"1: "
|
||||
: "=&r"(ret)
|
||||
: "r"(p), "r"(newval), "r"(oldval)
|
||||
: "cr0", "memory");
|
||||
return (int)(ret == 0);
|
||||
}
|
||||
|
||||
PT_EI long int
|
||||
testandset (int *p)
|
||||
{
|
||||
long int ret, val = 1;
|
||||
|
||||
MEMORY_BARRIER ();
|
||||
__asm__ __volatile__ (
|
||||
"0: lwarx %0,0,%1 ;"
|
||||
" cmpwi 0,%0,0;"
|
||||
" bne 1f;"
|
||||
" stwcx. %2,0,%1;"
|
||||
" bne- 0b;"
|
||||
"1: "
|
||||
: "=&r"(ret)
|
||||
: "r"(p), "r" (val)
|
||||
: "cr0", "memory");
|
||||
MEMORY_BARRIER ();
|
||||
return ret != 0;
|
||||
}
|
||||
|
||||
#endif /* pt-machine.h */
|
||||
34
sysdeps/powerpc/powerpc64/elf/entry.h
Normal file
34
sysdeps/powerpc/powerpc64/elf/entry.h
Normal file
@ -0,0 +1,34 @@
|
||||
/* Finding the entry point and start of text. PowerPC64 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 __ASSEMBLY__
|
||||
extern void _start (void);
|
||||
#endif
|
||||
|
||||
#define ENTRY_POINT _start
|
||||
|
||||
/* We have to provide a special declaration. */
|
||||
#define ENTRY_POINT_DECL(class) class void _start (void);
|
||||
|
||||
/* Use the address of ._start as the lowest address for which we need
|
||||
to keep profiling records. We can't copy the ia64 scheme as our
|
||||
entry poiny address is really the address of the function
|
||||
descriptor, not the actual function entry. */
|
||||
#define TEXT_START (((long int *) ENTRY_POINT)[0])
|
||||
Loading…
Reference in New Issue
Block a user