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Update.
1999-05-18 Ulrich Drepper <drepper@cygnus.com> * sysdeps/wordsize-64/stdint.h (INTPTR_MAX): Add missing ). 1999-05-17 David S. Miller <davem@redhat.com> * sysdeps/sparc/sparc32/atomicity.h: New file. * sysdeps/sparc/sparc32/sparcv9/atomicity.h: New file. * sysdeps/sparc/sparc64/atomicity.h: New file. * sysdeps/sparc/sparc32/sparcv9/Makefile: Add -Wa,-Av9a to sysdep-CFLAGS.
This commit is contained in:
Ulrich Drepper
parent
2a269cd083
commit
1acf7665c7
12
ChangeLog
12
ChangeLog
@ -1,3 +1,15 @@
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1999-05-18 Ulrich Drepper <drepper@cygnus.com>
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* sysdeps/wordsize-64/stdint.h (INTPTR_MAX): Add missing ).
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1999-05-17 David S. Miller <davem@redhat.com>
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* sysdeps/sparc/sparc32/atomicity.h: New file.
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* sysdeps/sparc/sparc32/sparcv9/atomicity.h: New file.
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* sysdeps/sparc/sparc64/atomicity.h: New file.
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* sysdeps/sparc/sparc32/sparcv9/Makefile: Add -Wa,-Av9a to
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sysdep-CFLAGS.
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1999-05-18 Richard Henderson <rth@twiddle.net>
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* sysdeps/alpha/memchr.S: Zap high byte of length. Reschedule.
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@ -63,11 +63,11 @@ __compare_and_swap (long int *p, long int oldval, long int newval)
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{
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long int readval;
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__asm__ __volatile__ ("cas [%4], %2, %0"
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__asm__ __volatile__ ("casx [%4], %2, %0"
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: "=r"(readval), "=m"(*p)
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: "r"(oldval), "m"(*p), "r"(p), "0"(newval));
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return readval == newval;
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return readval == oldval;
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}
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/* Access to data in the thread descriptor is easy. */
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98
sysdeps/sparc/sparc32/atomicity.h
Normal file
98
sysdeps/sparc/sparc32/atomicity.h
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@ -0,0 +1,98 @@
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/* Low-level functions for atomic operations. Sparc32 version.
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Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _ATOMICITY_H
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#define _ATOMICITY_H 1
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#include <inttypes.h>
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static int
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__attribute__ ((unused))
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exchange_and_add (volatile uint32_t *mem, int val)
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{
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static unsigned char lock;
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int result, tmp;
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__asm__ __volatile__("1: ldstub [%1], %0\n\t"
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" cmp %0, 0\n\t"
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" bne 1b\n\t"
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" nop"
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: "=&r" (tmp)
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: "r" (&lock)
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: "memory");
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result = *mem;
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*mem += val;
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__asm__ __volatile__("stb %%g0, [%0]"
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: /* no outputs */
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: "r" (&lock)
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: "memory");
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return result;
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}
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static void
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__attribute__ ((unused))
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atomic_add (volatile uint32_t *mem, int val)
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{
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static unsigned char lock;
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int tmp;
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__asm__ __volatile__("1: ldstub [%1], %0\n\t"
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" cmp %0, 0\n\t"
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" bne 1b\n\t"
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" nop"
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: "=&r" (tmp)
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: "r" (&lock)
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: "memory");
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*mem += val;
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__asm__ __volatile__("stb %%g0, [%0]"
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: /* no outputs */
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: "r" (&lock)
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: "memory");
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}
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static int
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__attribute__ ((unused))
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compare_and_swap (volatile long int *p, long int oldval, long int newval)
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{
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static unsigned char lock;
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int ret, tmp;
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__asm__ __volatile__("1: ldstub [%1], %0\n\t"
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" cmp %0, 0\n\t"
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" bne 1b\n\t"
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" nop"
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: "=&r" (tmp)
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: "r" (&lock)
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: "memory");
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if (*p != oldval)
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ret = 0;
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else
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{
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*p = newval;
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ret = 1;
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}
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__asm__ __volatile__("stb %%g0, [%0]"
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: /* no outputs */
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: "r" (&lock)
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: "memory");
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return ret;
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}
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#endif /* atomicity.h */
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@ -1,4 +1,4 @@
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sysdep-CFLAGS += -mv8 -mtune=ultrasparc
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sysdep-CFLAGS += -mv8 -mtune=ultrasparc -Wa,-Av9a
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ifeq ($(subst gnulib,string,$(subdir)),string)
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ASFLAGS-.o += -Wa,-Av9a
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82
sysdeps/sparc/sparc32/sparcv9/atomicity.h
Normal file
82
sysdeps/sparc/sparc32/sparcv9/atomicity.h
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@ -0,0 +1,82 @@
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/* Low-level functions for atomic operations. Sparc32+v9 version.
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Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _ATOMICITY_H
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#define _ATOMICITY_H 1
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#include <inttypes.h>
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static inline int
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__attribute__ ((unused))
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exchange_and_add (volatile uint32_t *mem, int val)
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{
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uint32_t tmp1, tmp2;
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__asm__ __volatile__("1: lduw [%2], %0\n\t"
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" add %0, %3, %1\n\t"
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" cas [%2], %0, %1\n\t"
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" sub %0, %1, %0\n\t"
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" brnz,pn %0, 1b\n\t"
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" nop"
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: "=&r" (tmp1), "=&r" (tmp2)
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: "r" (mem), "r" (val)
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: "memory");
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return tmp2;
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}
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static inline void
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__attribute__ ((unused))
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atomic_add (volatile uint32_t *mem, int val)
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{
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uint32_t tmp1, tmp2;
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__asm__ __volatile__("1: lduw [%2], %0\n\t"
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" add %0, %3, %1\n\t"
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" cas [%2], %0, %1\n\t"
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" sub %0, %1, %0\n\t"
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" brnz,pn %0, 1b\n\t"
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" nop"
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: "=&r" (tmp1), "=&r" (tmp2)
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: "r" (mem), "r" (val)
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: "memory");
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}
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static inline int
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__attribute__ ((unused))
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compare_and_swap (volatile long int *p, long int oldval, long int newval)
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{
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register long int tmp, tmp2;
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__asm__ __volatile__("1: lduw [%4], %0\n\t"
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" mov %2, %1\n\t"
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" cmp %0, %3\n\t"
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" bne,a,pn %%xcc, 2f\n\t"
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" mov 0, %0\n\t"
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" cas [%4], %0, %1\n\t"
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" sub %0, %1, %0\n\t"
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" brnz,pn %0, 1b\n\t"
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" mov 1, %0\n\t"
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"2:"
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: "=&r" (tmp), "=&r" (tmp2)
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: "r" (newval), "r" (oldval), "r" (p)
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: "memory");
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return tmp;
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}
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#endif /* atomicity.h */
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82
sysdeps/sparc/sparc64/atomicity.h
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82
sysdeps/sparc/sparc64/atomicity.h
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@ -0,0 +1,82 @@
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/* Low-level functions for atomic operations. Sparc64 version.
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Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _ATOMICITY_H
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#define _ATOMICITY_H 1
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#include <inttypes.h>
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static inline int
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__attribute__ ((unused))
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exchange_and_add (volatile uint32_t *mem, int val)
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{
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uint32_t tmp1, tmp2;
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__asm__ __volatile__("1: lduw [%2], %0\n\t"
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" add %0, %3, %1\n\t"
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" cas [%2], %0, %1\n\t"
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" sub %0, %1, %0\n\t"
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" brnz,pn %0, 1b\n\t"
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" nop"
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: "=&r" (tmp1), "=&r" (tmp2)
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: "r" (mem), "r" (val)
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: "memory");
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return tmp2;
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}
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static inline void
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__attribute__ ((unused))
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atomic_add (volatile uint32_t *mem, int val)
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{
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uint32_t tmp1, tmp2;
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__asm__ __volatile__("1: lduw [%2], %0\n\t"
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" add %0, %3, %1\n\t"
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" cas [%2], %0, %1\n\t"
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" sub %0, %1, %0\n\t"
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" brnz,pn %0, 1b\n\t"
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" nop"
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: "=&r" (tmp1), "=&r" (tmp2)
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: "r" (mem), "r" (val)
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: "memory");
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}
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static inline int
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__attribute__ ((unused))
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compare_and_swap (volatile long int *p, long int oldval, long int newval)
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{
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register long int tmp, tmp2;
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__asm__ __volatile__("1: ldx [%4], %0\n\t"
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" mov %2, %1\n\t"
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" cmp %0, %3\n\t"
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" bne,a,pn %%xcc, 2f\n\t"
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" mov 0, %0\n\t"
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" casx [%4], %0, %1\n\t"
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" sub %0, %1, %0\n\t"
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" brnz,pn %0, 1b\n\t"
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" mov 1, %0\n\t"
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"2:"
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: "=&r" (tmp), "=&r" (tmp2)
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: "r" (newval), "r" (oldval), "r" (p)
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: "memory");
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return tmp;
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}
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#endif /* atomicity.h */
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@ -152,7 +152,7 @@ typedef unsigned long int uintmax_t;
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/* Values to test for integral types holding `void *' pointer. */
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# define INTPTR_MIN (-9223372036854775807L-1)
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# define INTPTR_MAX (9223372036854775807L
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# define INTPTR_MAX (9223372036854775807L)
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# define UINTPTR_MAX (18446744073709551615UL)
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