diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | csu/gmon-start.c | 10 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h | 129 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc64/elf/entry.h | 34 |
4 files changed, 180 insertions, 1 deletions
@@ -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 diff --git a/csu/gmon-start.c b/csu/gmon-start.c index 9ee722aa0f..88160648f8 100644 --- a/csu/gmon-start.c +++ b/csu/gmon-start.c @@ -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 diff --git a/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h b/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h new file mode 100644 index 0000000000..a3dc26fe21 --- /dev/null +++ b/linuxthreads/sysdeps/powerpc/powerpc64/pt-machine.h @@ -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 */ diff --git a/sysdeps/powerpc/powerpc64/elf/entry.h b/sysdeps/powerpc/powerpc64/elf/entry.h new file mode 100644 index 0000000000..f9a7669fc2 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/elf/entry.h @@ -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]) |